eventespresso / event-espresso-core

core/admin/EE_Admin_Page.core.php

Spacing +142 added lines, -142 removed lines

@@ -476,7 +476,7 @@ 
         $this->_current_page = ! empty($_GET['page']) ? sanitize_key($_GET['page']) : '';
         $this->page_folder = strtolower(str_replace('_Admin_Page', '', str_replace('Extend_', '', get_class($this))));
         global $ee_menu_slugs;
-        $ee_menu_slugs = (array)$ee_menu_slugs;
+        $ee_menu_slugs = (array) $ee_menu_slugs;
         if (( ! $this->_current_page || ! isset($ee_menu_slugs[$this->_current_page])) && ! defined('DOING_AJAX')) {
             return;
         }
@@ -491,7 +491,7 @@ 
         //however if we are doing_ajax and we've got a 'route' set then that's what the req_action will be
         $this->_req_action = defined('DOING_AJAX') && isset($this->_req_data['route']) ? $this->_req_data['route'] : $this->_req_action;
         $this->_current_view = $this->_req_action;
-        $this->_req_nonce = $this->_req_action . '_nonce';
+        $this->_req_nonce = $this->_req_action.'_nonce';
         $this->_define_page_props();
         $this->_current_page_view_url = add_query_arg(array('page' => $this->_current_page, 'action' => $this->_current_view), $this->_admin_base_url);
         //default things
@@ -512,11 +512,11 @@ 
             $this->_extend_page_config_for_cpt();
         }
         //filter routes and page_config so addons can add their stuff. Filtering done per class
-        $this->_page_routes = apply_filters('FHEE__' . get_class($this) . '__page_setup__page_routes', $this->_page_routes, $this);
-        $this->_page_config = apply_filters('FHEE__' . get_class($this) . '__page_setup__page_config', $this->_page_config, $this);
+        $this->_page_routes = apply_filters('FHEE__'.get_class($this).'__page_setup__page_routes', $this->_page_routes, $this);
+        $this->_page_config = apply_filters('FHEE__'.get_class($this).'__page_setup__page_config', $this->_page_config, $this);
         //if AHEE__EE_Admin_Page__route_admin_request_$this->_current_view method is present then we call it hooked into the AHEE__EE_Admin_Page__route_admin_request action
-        if (method_exists($this, 'AHEE__EE_Admin_Page__route_admin_request_' . $this->_current_view)) {
-            add_action('AHEE__EE_Admin_Page__route_admin_request', array($this, 'AHEE__EE_Admin_Page__route_admin_request_' . $this->_current_view), 10, 2);
+        if (method_exists($this, 'AHEE__EE_Admin_Page__route_admin_request_'.$this->_current_view)) {
+            add_action('AHEE__EE_Admin_Page__route_admin_request', array($this, 'AHEE__EE_Admin_Page__route_admin_request_'.$this->_current_view), 10, 2);
         }
         //next route only if routing enabled
         if ($this->_routing && ! defined('DOING_AJAX')) {
@@ -526,8 +526,8 @@ 
             if ($this->_is_UI_request) {
                 //admin_init stuff - global, all views for this page class, specific view
                 add_action('admin_init', array($this, 'admin_init'), 10);
-                if (method_exists($this, 'admin_init_' . $this->_current_view)) {
-                    add_action('admin_init', array($this, 'admin_init_' . $this->_current_view), 15);
+                if (method_exists($this, 'admin_init_'.$this->_current_view)) {
+                    add_action('admin_init', array($this, 'admin_init_'.$this->_current_view), 15);
                 }
             } else {
                 //hijack regular WP loading and route admin request immediately
@@ -547,17 +547,17 @@ 
      */
     private function _do_other_page_hooks()
     {
-        $registered_pages = apply_filters('FHEE_do_other_page_hooks_' . $this->page_slug, array());
+        $registered_pages = apply_filters('FHEE_do_other_page_hooks_'.$this->page_slug, array());
         foreach ($registered_pages as $page) {
             //now let's setup the file name and class that should be present
             $classname = str_replace('.class.php', '', $page);
             //autoloaders should take care of loading file
             if ( ! class_exists($classname)) {
-                $error_msg[] = sprintf( esc_html__('Something went wrong with loading the %s admin hooks page.', 'event_espresso'), $page);
+                $error_msg[] = sprintf(esc_html__('Something went wrong with loading the %s admin hooks page.', 'event_espresso'), $page);
                 $error_msg[] = $error_msg[0]
                                . "\r\n"
-                               . sprintf( esc_html__('There is no class in place for the %1$s admin hooks page.%2$sMake sure you have %3$s defined. If this is a non-EE-core admin page then you also must have an autoloader in place for your class',
-                                'event_espresso'), $page, '<br />', '<strong>' . $classname . '</strong>');
+                               . sprintf(esc_html__('There is no class in place for the %1$s admin hooks page.%2$sMake sure you have %3$s defined. If this is a non-EE-core admin page then you also must have an autoloader in place for your class',
+                                'event_espresso'), $page, '<br />', '<strong>'.$classname.'</strong>');
                 throw new EE_Error(implode('||', $error_msg));
             }
             $a = new ReflectionClass($classname);
@@ -593,13 +593,13 @@ 
         //load admin_notices - global, page class, and view specific
         add_action('admin_notices', array($this, 'admin_notices_global'), 5);
         add_action('admin_notices', array($this, 'admin_notices'), 10);
-        if (method_exists($this, 'admin_notices_' . $this->_current_view)) {
-            add_action('admin_notices', array($this, 'admin_notices_' . $this->_current_view), 15);
+        if (method_exists($this, 'admin_notices_'.$this->_current_view)) {
+            add_action('admin_notices', array($this, 'admin_notices_'.$this->_current_view), 15);
         }
         //load network admin_notices - global, page class, and view specific
         add_action('network_admin_notices', array($this, 'network_admin_notices_global'), 5);
-        if (method_exists($this, 'network_admin_notices_' . $this->_current_view)) {
-            add_action('network_admin_notices', array($this, 'network_admin_notices_' . $this->_current_view));
+        if (method_exists($this, 'network_admin_notices_'.$this->_current_view)) {
+            add_action('network_admin_notices', array($this, 'network_admin_notices_'.$this->_current_view));
         }
         //this will save any per_page screen options if they are present
         $this->_set_per_page_screen_options();
@@ -611,8 +611,8 @@ 
         //add screen options - global, page child class, and view specific
         $this->_add_global_screen_options();
         $this->_add_screen_options();
-        if (method_exists($this, '_add_screen_options_' . $this->_current_view)) {
-            call_user_func(array($this, '_add_screen_options_' . $this->_current_view));
+        if (method_exists($this, '_add_screen_options_'.$this->_current_view)) {
+            call_user_func(array($this, '_add_screen_options_'.$this->_current_view));
         }
         //add help tab(s) and tours- set via page_config and qtips.
         $this->_add_help_tour();
@@ -621,31 +621,31 @@ 
         //add feature_pointers - global, page child class, and view specific
         $this->_add_feature_pointers();
         $this->_add_global_feature_pointers();
-        if (method_exists($this, '_add_feature_pointer_' . $this->_current_view)) {
-            call_user_func(array($this, '_add_feature_pointer_' . $this->_current_view));
+        if (method_exists($this, '_add_feature_pointer_'.$this->_current_view)) {
+            call_user_func(array($this, '_add_feature_pointer_'.$this->_current_view));
         }
         //enqueue scripts/styles - global, page class, and view specific
         add_action('admin_enqueue_scripts', array($this, 'load_global_scripts_styles'), 5);
         add_action('admin_enqueue_scripts', array($this, 'load_scripts_styles'), 10);
-        if (method_exists($this, 'load_scripts_styles_' . $this->_current_view)) {
-            add_action('admin_enqueue_scripts', array($this, 'load_scripts_styles_' . $this->_current_view), 15);
+        if (method_exists($this, 'load_scripts_styles_'.$this->_current_view)) {
+            add_action('admin_enqueue_scripts', array($this, 'load_scripts_styles_'.$this->_current_view), 15);
         }
         add_action('admin_enqueue_scripts', array($this, 'admin_footer_scripts_eei18n_js_strings'), 100);
         //admin_print_footer_scripts - global, page child class, and view specific.  NOTE, despite the name, whenever possible, scripts should NOT be loaded using this.  In most cases that's doing_it_wrong().  But adding hidden container elements etc. is a good use case. Notice the late priority we're giving these
         add_action('admin_print_footer_scripts', array($this, 'admin_footer_scripts_global'), 99);
         add_action('admin_print_footer_scripts', array($this, 'admin_footer_scripts'), 100);
-        if (method_exists($this, 'admin_footer_scripts_' . $this->_current_view)) {
-            add_action('admin_print_footer_scripts', array($this, 'admin_footer_scripts_' . $this->_current_view), 101);
+        if (method_exists($this, 'admin_footer_scripts_'.$this->_current_view)) {
+            add_action('admin_print_footer_scripts', array($this, 'admin_footer_scripts_'.$this->_current_view), 101);
         }
         //admin footer scripts
         add_action('admin_footer', array($this, 'admin_footer_global'), 99);
         add_action('admin_footer', array($this, 'admin_footer'), 100);
-        if (method_exists($this, 'admin_footer_' . $this->_current_view)) {
-            add_action('admin_footer', array($this, 'admin_footer_' . $this->_current_view), 101);
+        if (method_exists($this, 'admin_footer_'.$this->_current_view)) {
+            add_action('admin_footer', array($this, 'admin_footer_'.$this->_current_view), 101);
         }
         do_action('FHEE__EE_Admin_Page___load_page_dependencies__after_load', $this->page_slug);
         //targeted hook
-        do_action('FHEE__EE_Admin_Page___load_page_dependencies__after_load__' . $this->page_slug . '__' . $this->_req_action);
+        do_action('FHEE__EE_Admin_Page___load_page_dependencies__after_load__'.$this->page_slug.'__'.$this->_req_action);
     }
 
 
@@ -721,7 +721,7 @@ 
             // user error msg
             $error_msg = sprintf(__('No page routes have been set for the %s admin page.', 'event_espresso'), $this->_admin_page_title);
             // developer error msg
-            $error_msg .= '||' . $error_msg . __(' Make sure the "set_page_routes()" method exists, and is setting the "_page_routes" array properly.', 'event_espresso');
+            $error_msg .= '||'.$error_msg.__(' Make sure the "set_page_routes()" method exists, and is setting the "_page_routes" array properly.', 'event_espresso');
             throw new EE_Error($error_msg);
         }
         // and that the requested page route exists
@@ -732,7 +732,7 @@ 
             // user error msg
             $error_msg = sprintf(__('The requested page route does not exist for the %s admin page.', 'event_espresso'), $this->_admin_page_title);
             // developer error msg
-            $error_msg .= '||' . $error_msg . sprintf(__(' Create a key in the "_page_routes" array named "%s" and set its value to the appropriate method.', 'event_espresso'), $this->_req_action);
+            $error_msg .= '||'.$error_msg.sprintf(__(' Create a key in the "_page_routes" array named "%s" and set its value to the appropriate method.', 'event_espresso'), $this->_req_action);
             throw new EE_Error($error_msg);
         }
         // and that a default route exists
@@ -740,7 +740,7 @@ 
             // user error msg
             $error_msg = sprintf(__('A default page route has not been set for the % admin page.', 'event_espresso'), $this->_admin_page_title);
             // developer error msg
-            $error_msg .= '||' . $error_msg . __(' Create a key in the "_page_routes" array named "default" and set its value to your default page method.', 'event_espresso');
+            $error_msg .= '||'.$error_msg.__(' Create a key in the "_page_routes" array named "default" and set its value to your default page method.', 'event_espresso');
             throw new EE_Error($error_msg);
         }
         //first lets' catch if the UI request has EVER been set.
@@ -769,7 +769,7 @@ 
             // user error msg
             $error_msg = sprintf(__('The given page route does not exist for the %s admin page.', 'event_espresso'), $this->_admin_page_title);
             // developer error msg
-            $error_msg .= '||' . $error_msg . sprintf(__(' Check the route you are using in your method (%s) and make sure it matches a route set in your "_page_routes" array property', 'event_espresso'), $route);
+            $error_msg .= '||'.$error_msg.sprintf(__(' Check the route you are using in your method (%s) and make sure it matches a route set in your "_page_routes" array property', 'event_espresso'), $route);
             throw new EE_Error($error_msg);
         }
     }
@@ -791,7 +791,7 @@ 
             // these are not the droids you are looking for !!!
             $msg = sprintf(__('%sNonce Fail.%s', 'event_espresso'), '<a href="http://www.youtube.com/watch?v=56_S0WeTkzs">', '</a>');
             if (WP_DEBUG) {
-                $msg .= "\n  " . sprintf(__('In order to dynamically generate nonces for your actions, use the %s::add_query_args_and_nonce() method. May the Nonce be with you!', 'event_espresso'), __CLASS__);
+                $msg .= "\n  ".sprintf(__('In order to dynamically generate nonces for your actions, use the %s::add_query_args_and_nonce() method. May the Nonce be with you!', 'event_espresso'), __CLASS__);
             }
             if ( ! defined('DOING_AJAX')) {
                 wp_die($msg);
@@ -969,7 +969,7 @@ 
                 if (strpos($key, 'nonce') !== false) {
                     continue;
                 }
-                $args['wp_referer[' . $key . ']'] = $value;
+                $args['wp_referer['.$key.']'] = $value;
             }
         }
         return EEH_URL::add_query_args_and_nonce($args, $url, $exclude_nonce);
@@ -1015,7 +1015,7 @@ 
                     if ($tour instanceof EE_Help_Tour_final_stop) {
                         continue;
                     }
-                    $tb[] = '<button id="trigger-tour-' . $tour->get_slug() . '" class="button-primary trigger-ee-help-tour">' . $tour->get_label() . '</button>';
+                    $tb[] = '<button id="trigger-tour-'.$tour->get_slug().'" class="button-primary trigger-ee-help-tour">'.$tour->get_label().'</button>';
                 }
                 $tour_buttons .= implode('<br />', $tb);
                 $tour_buttons .= '</div></div>';
@@ -1027,7 +1027,7 @@ 
                     throw new EE_Error(sprintf(__('The _page_config array has a callback set for the "help_sidebar" option.  However the callback given (%s) is not a valid callback.  Doublecheck the spelling and make sure this method exists for the class %s',
                             'event_espresso'), $config['help_sidebar'], get_class($this)));
                 }
-                $content = apply_filters('FHEE__' . get_class($this) . '__add_help_tabs__help_sidebar', call_user_func(array($this, $config['help_sidebar'])));
+                $content = apply_filters('FHEE__'.get_class($this).'__add_help_tabs__help_sidebar', call_user_func(array($this, $config['help_sidebar'])));
                 $content .= $tour_buttons; //add help tour buttons.
                 //do we have any help tours setup?  Cause if we do we want to add the buttons
                 $this->_current_screen->set_help_sidebar($content);
@@ -1040,13 +1040,13 @@ 
             if ( ! isset($config['help_tabs']) && ! empty($tour_buttons)) {
                 $_ht['id'] = $this->page_slug;
                 $_ht['title'] = __('Help Tours', 'event_espresso');
-                $_ht['content'] = '<p>' . __('The buttons to the right allow you to start/restart any help tours available for this page', 'event_espresso') . '</p>';
+                $_ht['content'] = '<p>'.__('The buttons to the right allow you to start/restart any help tours available for this page', 'event_espresso').'</p>';
                 $this->_current_screen->add_help_tab($_ht);
             }/**/
             if ( ! isset($config['help_tabs'])) {
                 return;
             } //no help tabs for this route
-            foreach ((array)$config['help_tabs'] as $tab_id => $cfg) {
+            foreach ((array) $config['help_tabs'] as $tab_id => $cfg) {
                 //we're here so there ARE help tabs!
                 //make sure we've got what we need
                 if ( ! isset($cfg['title'])) {
@@ -1061,9 +1061,9 @@ 
                     $content = ! empty($cfg['content']) ? $cfg['content'] : null;
                     //second priority goes to filename
                 } else if ( ! empty($cfg['filename'])) {
-                    $file_path = $this->_get_dir() . '/help_tabs/' . $cfg['filename'] . '.help_tab.php';
+                    $file_path = $this->_get_dir().'/help_tabs/'.$cfg['filename'].'.help_tab.php';
                     //it's possible that the file is located on decaf route (and above sets up for caf route, if this is the case then lets check decaf route too)
-                    $file_path = ! is_readable($file_path) ? EE_ADMIN_PAGES . basename($this->_get_dir()) . '/help_tabs/' . $cfg['filename'] . '.help_tab.php' : $file_path;
+                    $file_path = ! is_readable($file_path) ? EE_ADMIN_PAGES . basename($this->_get_dir()).'/help_tabs/'.$cfg['filename'].'.help_tab.php' : $file_path;
                     //if file is STILL not readable then let's do a EE_Error so its more graceful than a fatal error.
                     if ( ! is_readable($file_path) && ! isset($cfg['callback'])) {
                         EE_Error::add_error(sprintf(__('The filename given for the help tab %s is not a valid file and there is no other configuration for the tab content.  Please check that the string you set for the help tab on this route (%s) is the correct spelling.  The file should be in %s',
@@ -1082,7 +1082,7 @@ 
                     return;
                 }
                 //setup config array for help tab method
-                $id = $this->page_slug . '-' . $this->_req_action . '-' . $tab_id;
+                $id = $this->page_slug.'-'.$this->_req_action.'-'.$tab_id;
                 $_ht = array(
                         'id'       => $id,
                         'title'    => $cfg['title'],
@@ -1120,9 +1120,9 @@ 
             }
             if (isset($config['help_tour'])) {
                 foreach ($config['help_tour'] as $tour) {
-                    $file_path = $this->_get_dir() . '/help_tours/' . $tour . '.class.php';
+                    $file_path = $this->_get_dir().'/help_tours/'.$tour.'.class.php';
                     //let's see if we can get that file... if not its possible this is a decaf route not set in caffienated so lets try and get the caffeinated equivalent
-                    $file_path = ! is_readable($file_path) ? EE_ADMIN_PAGES . basename($this->_get_dir()) . '/help_tours/' . $tour . '.class.php' : $file_path;
+                    $file_path = ! is_readable($file_path) ? EE_ADMIN_PAGES . basename($this->_get_dir()).'/help_tours/'.$tour.'.class.php' : $file_path;
                     //if file is STILL not readable then let's do a EE_Error so its more graceful than a fatal error.
                     if ( ! is_readable($file_path)) {
                         EE_Error::add_error(sprintf(__('The file path given for the help tour (%s) is not a valid path.  Please check that the string you set for the help tour on this route (%s) is the correct spelling', 'event_espresso'),
@@ -1132,7 +1132,7 @@ 
                     require_once $file_path;
                     if ( ! class_exists($tour)) {
                         $error_msg[] = sprintf(__('Something went wrong with loading the %s Help Tour Class.', 'event_espresso'), $tour);
-                        $error_msg[] = $error_msg[0] . "\r\n" . sprintf(__('There is no class in place for the %s help tour.%s Make sure you have <strong>%s</strong> defined in the "help_tour" array for the %s route of the % admin page.',
+                        $error_msg[] = $error_msg[0]."\r\n".sprintf(__('There is no class in place for the %s help tour.%s Make sure you have <strong>%s</strong> defined in the "help_tour" array for the %s route of the % admin page.',
                                         'event_espresso'), $tour, '<br />', $tour, $this->_req_action, get_class($this));
                         throw new EE_Error(implode('||', $error_msg));
                     }
@@ -1164,11 +1164,11 @@ 
     protected function _add_qtips()
     {
         if (isset($this->_route_config['qtips'])) {
-            $qtips = (array)$this->_route_config['qtips'];
+            $qtips = (array) $this->_route_config['qtips'];
             //load qtip loader
             $path = array(
-                    $this->_get_dir() . '/qtips/',
-                    EE_ADMIN_PAGES . basename($this->_get_dir()) . '/qtips/',
+                    $this->_get_dir().'/qtips/',
+                    EE_ADMIN_PAGES.basename($this->_get_dir()).'/qtips/',
             );
             EEH_Qtip_Loader::instance()->register($qtips, $path);
         }
@@ -1198,11 +1198,11 @@ 
             if ( ! $this->check_user_access($slug, true)) {
                 continue;
             } //no nav tab becasue current user does not have access.
-            $css_class = isset($config['css_class']) ? $config['css_class'] . ' ' : '';
+            $css_class = isset($config['css_class']) ? $config['css_class'].' ' : '';
             $this->_nav_tabs[$slug] = array(
                     'url'       => isset($config['nav']['url']) ? $config['nav']['url'] : self::add_query_args_and_nonce(array('action' => $slug), $this->_admin_base_url),
                     'link_text' => isset($config['nav']['label']) ? $config['nav']['label'] : ucwords(str_replace('_', ' ', $slug)),
-                    'css_class' => $this->_req_action == $slug ? $css_class . 'nav-tab-active' : $css_class,
+                    'css_class' => $this->_req_action == $slug ? $css_class.'nav-tab-active' : $css_class,
                     'order'     => isset($config['nav']['order']) ? $config['nav']['order'] : $i,
             );
             $i++;
@@ -1265,11 +1265,11 @@ 
             $capability = empty($capability) ? 'manage_options' : $capability;
         }
         $id = is_array($this->_route) && ! empty($this->_route['obj_id']) ? $this->_route['obj_id'] : 0;
-        if (( ! function_exists('is_admin') || ! EE_Registry::instance()->CAP->current_user_can($capability, $this->page_slug . '_' . $route_to_check, $id)) && ! defined('DOING_AJAX')) {
+        if (( ! function_exists('is_admin') || ! EE_Registry::instance()->CAP->current_user_can($capability, $this->page_slug.'_'.$route_to_check, $id)) && ! defined('DOING_AJAX')) {
             if ($verify_only) {
                 return false;
             } else {
-                if ( is_user_logged_in() ) {
+                if (is_user_logged_in()) {
                     wp_die(__('You do not have access to this route.', 'event_espresso'));
                 } else {
                     return false;
@@ -1361,7 +1361,7 @@ 
     public function admin_footer_global()
     {
         //dialog container for dialog helper
-        $d_cont = '<div class="ee-admin-dialog-container auto-hide hidden">' . "\n";
+        $d_cont = '<div class="ee-admin-dialog-container auto-hide hidden">'."\n";
         $d_cont .= '<div class="ee-notices"></div>';
         $d_cont .= '<div class="ee-admin-dialog-container-inner-content"></div>';
         $d_cont .= '</div>';
@@ -1371,7 +1371,7 @@ 
             echo implode('<br />', $this->_help_tour[$this->_req_action]);
         }
         //current set timezone for timezone js
-        echo '<span id="current_timezone" class="hidden">' . EEH_DTT_Helper::get_timezone() . '</span>';
+        echo '<span id="current_timezone" class="hidden">'.EEH_DTT_Helper::get_timezone().'</span>';
     }
 
 
@@ -1396,7 +1396,7 @@ 
     {
         $content = '';
         $help_array = empty($help_array) ? $this->_get_help_content() : $help_array;
-        $template_path = EE_ADMIN_TEMPLATE . 'admin_help_popup.template.php';
+        $template_path = EE_ADMIN_TEMPLATE.'admin_help_popup.template.php';
         //loop through the array and setup content
         foreach ($help_array as $trigger => $help) {
             //make sure the array is setup properly
@@ -1430,7 +1430,7 @@ 
     private function _get_help_content()
     {
         //what is the method we're looking for?
-        $method_name = '_help_popup_content_' . $this->_req_action;
+        $method_name = '_help_popup_content_'.$this->_req_action;
         //if method doesn't exist let's get out.
         if ( ! method_exists($this, $method_name)) {
             return array();
@@ -1474,8 +1474,8 @@ 
             $help_content = $this->_set_help_popup_content($help_array, false);
         }
         //let's setup the trigger
-        $content = '<a class="ee-dialog" href="?height=' . $dimensions[0] . '&width=' . $dimensions[1] . '&inlineId=' . $trigger_id . '" target="_blank"><span class="question ee-help-popup-question"></span></a>';
-        $content = $content . $help_content;
+        $content = '<a class="ee-dialog" href="?height='.$dimensions[0].'&width='.$dimensions[1].'&inlineId='.$trigger_id.'" target="_blank"><span class="question ee-help-popup-question"></span></a>';
+        $content = $content.$help_content;
         if ($display) {
             echo $content;
         } else {
@@ -1535,27 +1535,27 @@ 
             add_action('admin_head', array($this, 'add_xdebug_style'));
         }
         // register all styles
-        wp_register_style('espresso-ui-theme', EE_GLOBAL_ASSETS_URL . 'css/espresso-ui-theme/jquery-ui-1.10.3.custom.min.css', array(), EVENT_ESPRESSO_VERSION);
-        wp_register_style('ee-admin-css', EE_ADMIN_URL . 'assets/ee-admin-page.css', array(), EVENT_ESPRESSO_VERSION);
+        wp_register_style('espresso-ui-theme', EE_GLOBAL_ASSETS_URL.'css/espresso-ui-theme/jquery-ui-1.10.3.custom.min.css', array(), EVENT_ESPRESSO_VERSION);
+        wp_register_style('ee-admin-css', EE_ADMIN_URL.'assets/ee-admin-page.css', array(), EVENT_ESPRESSO_VERSION);
         //helpers styles
-        wp_register_style('ee-text-links', EE_PLUGIN_DIR_URL . 'core/helpers/assets/ee_text_list_helper.css', array(), EVENT_ESPRESSO_VERSION);
+        wp_register_style('ee-text-links', EE_PLUGIN_DIR_URL.'core/helpers/assets/ee_text_list_helper.css', array(), EVENT_ESPRESSO_VERSION);
         /** SCRIPTS **/
         //register all scripts
-        wp_register_script('ee-dialog', EE_ADMIN_URL . 'assets/ee-dialog-helper.js', array('jquery', 'jquery-ui-draggable'), EVENT_ESPRESSO_VERSION, true);
-        wp_register_script('ee_admin_js', EE_ADMIN_URL . 'assets/ee-admin-page.js', array('espresso_core', 'ee-parse-uri', 'ee-dialog'), EVENT_ESPRESSO_VERSION, true);
-        wp_register_script('jquery-ui-timepicker-addon', EE_GLOBAL_ASSETS_URL . 'scripts/jquery-ui-timepicker-addon.js', array('jquery-ui-datepicker', 'jquery-ui-slider'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-dialog', EE_ADMIN_URL.'assets/ee-dialog-helper.js', array('jquery', 'jquery-ui-draggable'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee_admin_js', EE_ADMIN_URL.'assets/ee-admin-page.js', array('espresso_core', 'ee-parse-uri', 'ee-dialog'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('jquery-ui-timepicker-addon', EE_GLOBAL_ASSETS_URL.'scripts/jquery-ui-timepicker-addon.js', array('jquery-ui-datepicker', 'jquery-ui-slider'), EVENT_ESPRESSO_VERSION, true);
         add_filter('FHEE_load_joyride', '__return_true');
         //script for sorting tables
-        wp_register_script('espresso_ajax_table_sorting', EE_ADMIN_URL . "assets/espresso_ajax_table_sorting.js", array('ee_admin_js', 'jquery-ui-sortable'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('espresso_ajax_table_sorting', EE_ADMIN_URL."assets/espresso_ajax_table_sorting.js", array('ee_admin_js', 'jquery-ui-sortable'), EVENT_ESPRESSO_VERSION, true);
         //script for parsing uri's
-        wp_register_script('ee-parse-uri', EE_GLOBAL_ASSETS_URL . 'scripts/parseuri.js', array(), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-parse-uri', EE_GLOBAL_ASSETS_URL.'scripts/parseuri.js', array(), EVENT_ESPRESSO_VERSION, true);
         //and parsing associative serialized form elements
-        wp_register_script('ee-serialize-full-array', EE_GLOBAL_ASSETS_URL . 'scripts/jquery.serializefullarray.js', array('jquery'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-serialize-full-array', EE_GLOBAL_ASSETS_URL.'scripts/jquery.serializefullarray.js', array('jquery'), EVENT_ESPRESSO_VERSION, true);
         //helpers scripts
-        wp_register_script('ee-text-links', EE_PLUGIN_DIR_URL . 'core/helpers/assets/ee_text_list_helper.js', array('jquery'), EVENT_ESPRESSO_VERSION, true);
-        wp_register_script('ee-moment-core', EE_THIRD_PARTY_URL . 'moment/moment-with-locales.min.js', array(), EVENT_ESPRESSO_VERSION, true);
-        wp_register_script('ee-moment', EE_THIRD_PARTY_URL . 'moment/moment-timezone-with-data.min.js', array('ee-moment-core'), EVENT_ESPRESSO_VERSION, true);
-        wp_register_script('ee-datepicker', EE_ADMIN_URL . 'assets/ee-datepicker.js', array('jquery-ui-timepicker-addon', 'ee-moment'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-text-links', EE_PLUGIN_DIR_URL.'core/helpers/assets/ee_text_list_helper.js', array('jquery'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-moment-core', EE_THIRD_PARTY_URL.'moment/moment-with-locales.min.js', array(), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-moment', EE_THIRD_PARTY_URL.'moment/moment-timezone-with-data.min.js', array('ee-moment-core'), EVENT_ESPRESSO_VERSION, true);
+        wp_register_script('ee-datepicker', EE_ADMIN_URL.'assets/ee-datepicker.js', array('jquery-ui-timepicker-addon', 'ee-moment'), EVENT_ESPRESSO_VERSION, true);
         //google charts
         wp_register_script('google-charts', 'https://www.gstatic.com/charts/loader.js', array(), EVENT_ESPRESSO_VERSION, false);
         // ENQUEUE ALL BASICS BY DEFAULT
@@ -1579,7 +1579,7 @@ 
          */
         if ( ! empty($this->_help_tour)) {
             //register the js for kicking things off
-            wp_enqueue_script('ee-help-tour', EE_ADMIN_URL . 'assets/ee-help-tour.js', array('jquery-joyride'), EVENT_ESPRESSO_VERSION, true);
+            wp_enqueue_script('ee-help-tour', EE_ADMIN_URL.'assets/ee-help-tour.js', array('jquery-joyride'), EVENT_ESPRESSO_VERSION, true);
             //setup tours for the js tour object
             foreach ($this->_help_tour['tours'] as $tour) {
                 $tours[] = array(
@@ -1674,17 +1674,17 @@ 
             return;
         } //not a list_table view so get out.
         //list table functions are per view specific (because some admin pages might have more than one listtable!)
-        if (call_user_func(array($this, '_set_list_table_views_' . $this->_req_action)) === false) {
+        if (call_user_func(array($this, '_set_list_table_views_'.$this->_req_action)) === false) {
             //user error msg
             $error_msg = __('An error occurred. The requested list table views could not be found.', 'event_espresso');
             //developer error msg
-            $error_msg .= '||' . sprintf(__('List table views for "%s" route could not be setup. Check that you have the corresponding method, "%s" set up for defining list_table_views for this route.', 'event_espresso'),
-                            $this->_req_action, '_set_list_table_views_' . $this->_req_action);
+            $error_msg .= '||'.sprintf(__('List table views for "%s" route could not be setup. Check that you have the corresponding method, "%s" set up for defining list_table_views for this route.', 'event_espresso'),
+                            $this->_req_action, '_set_list_table_views_'.$this->_req_action);
             throw new EE_Error($error_msg);
         }
         //let's provide the ability to filter the views per PAGE AND ROUTE, per PAGE, and globally
-        $this->_views = apply_filters('FHEE_list_table_views_' . $this->page_slug . '_' . $this->_req_action, $this->_views);
-        $this->_views = apply_filters('FHEE_list_table_views_' . $this->page_slug, $this->_views);
+        $this->_views = apply_filters('FHEE_list_table_views_'.$this->page_slug.'_'.$this->_req_action, $this->_views);
+        $this->_views = apply_filters('FHEE_list_table_views_'.$this->page_slug, $this->_views);
         $this->_views = apply_filters('FHEE_list_table_views', $this->_views);
         $this->_set_list_table_view();
         $this->_set_list_table_object();
@@ -1759,7 +1759,7 @@ 
             // check for current view
             $this->_views[$key]['class'] = $this->_view == $view['slug'] ? 'current' : '';
             $query_args['action'] = $this->_req_action;
-            $query_args[$this->_req_action . '_nonce'] = wp_create_nonce($query_args['action'] . '_nonce');
+            $query_args[$this->_req_action.'_nonce'] = wp_create_nonce($query_args['action'].'_nonce');
             $query_args['status'] = $view['slug'];
             //merge any other arguments sent in.
             if (isset($extra_query_args[$view['slug']])) {
@@ -1797,14 +1797,14 @@ 
 					<select id="entries-per-page-slct" name="entries-per-page-slct">';
         foreach ($values as $value) {
             if ($value < $max_entries) {
-                $selected = $value == $per_page ? ' selected="' . $per_page . '"' : '';
+                $selected = $value == $per_page ? ' selected="'.$per_page.'"' : '';
                 $entries_per_page_dropdown .= '
-						<option value="' . $value . '"' . $selected . '>' . $value . '&nbsp;&nbsp;</option>';
+						<option value="' . $value.'"'.$selected.'>'.$value.'&nbsp;&nbsp;</option>';
             }
         }
-        $selected = $max_entries == $per_page ? ' selected="' . $per_page . '"' : '';
+        $selected = $max_entries == $per_page ? ' selected="'.$per_page.'"' : '';
         $entries_per_page_dropdown .= '
-						<option value="' . $max_entries . '"' . $selected . '>All&nbsp;&nbsp;</option>';
+						<option value="' . $max_entries.'"'.$selected.'>All&nbsp;&nbsp;</option>';
         $entries_per_page_dropdown .= '
 					</select>
 					entries
@@ -1826,7 +1826,7 @@ 
     public function _set_search_attributes()
     {
         $this->_template_args['search']['btn_label'] = sprintf(__('Search %s', 'event_espresso'), empty($this->_search_btn_label) ? $this->page_label : $this->_search_btn_label);
-        $this->_template_args['search']['callback'] = 'search_' . $this->page_slug;
+        $this->_template_args['search']['callback'] = 'search_'.$this->page_slug;
     }
 
     /*** END LIST TABLE METHODS **/
@@ -1864,7 +1864,7 @@ 
                     // user error msg
                     $error_msg = __('An error occurred. The  requested metabox could not be found.', 'event_espresso');
                     // developer error msg
-                    $error_msg .= '||' . sprintf(
+                    $error_msg .= '||'.sprintf(
                                     __(
                                             'The metabox with the string "%s" could not be called. Check that the spelling for method names and actions in the "_page_config[\'metaboxes\']" array are all correct.',
                                             'event_espresso'
@@ -1894,15 +1894,15 @@ 
                 && is_array($this->_route_config['columns'])
                 && count($this->_route_config['columns']) === 2
         ) {
-            add_screen_option('layout_columns', array('max' => (int)$this->_route_config['columns'][0], 'default' => (int)$this->_route_config['columns'][1]));
+            add_screen_option('layout_columns', array('max' => (int) $this->_route_config['columns'][0], 'default' => (int) $this->_route_config['columns'][1]));
             $this->_template_args['num_columns'] = $this->_route_config['columns'][0];
             $screen_id = $this->_current_screen->id;
-            $screen_columns = (int)get_user_option("screen_layout_$screen_id");
+            $screen_columns = (int) get_user_option("screen_layout_$screen_id");
             $total_columns = ! empty($screen_columns) ? $screen_columns : $this->_route_config['columns'][1];
-            $this->_template_args['current_screen_widget_class'] = 'columns-' . $total_columns;
+            $this->_template_args['current_screen_widget_class'] = 'columns-'.$total_columns;
             $this->_template_args['current_page'] = $this->_wp_page_slug;
             $this->_template_args['screen'] = $this->_current_screen;
-            $this->_column_template_path = EE_ADMIN_TEMPLATE . 'admin_details_metabox_column_wrapper.template.php';
+            $this->_column_template_path = EE_ADMIN_TEMPLATE.'admin_details_metabox_column_wrapper.template.php';
             //finally if we don't have has_metaboxes set in the route config let's make sure it IS set other wise the necessary hidden fields for this won't be loaded.
             $this->_route_config['has_metaboxes'] = true;
         }
@@ -1949,7 +1949,7 @@ 
      */
     public function espresso_ratings_request()
     {
-        $template_path = EE_ADMIN_TEMPLATE . 'espresso_ratings_request_content.template.php';
+        $template_path = EE_ADMIN_TEMPLATE.'espresso_ratings_request_content.template.php';
         EEH_Template::display_template($template_path, array());
     }
 
@@ -1957,18 +1957,18 @@ 
 
     public static function cached_rss_display($rss_id, $url)
     {
-        $loading = '<p class="widget-loading hide-if-no-js">' . __('Loading&#8230;') . '</p><p class="hide-if-js">' . __('This widget requires JavaScript.') . '</p>';
+        $loading = '<p class="widget-loading hide-if-no-js">'.__('Loading&#8230;').'</p><p class="hide-if-js">'.__('This widget requires JavaScript.').'</p>';
         $doing_ajax = (defined('DOING_AJAX') && DOING_AJAX);
-        $pre = '<div class="espresso-rss-display">' . "\n\t";
-        $pre .= '<span id="' . $rss_id . '_url" class="hidden">' . $url . '</span>';
-        $post = '</div>' . "\n";
-        $cache_key = 'ee_rss_' . md5($rss_id);
+        $pre = '<div class="espresso-rss-display">'."\n\t";
+        $pre .= '<span id="'.$rss_id.'_url" class="hidden">'.$url.'</span>';
+        $post = '</div>'."\n";
+        $cache_key = 'ee_rss_'.md5($rss_id);
         if (false != ($output = get_transient($cache_key))) {
-            echo $pre . $output . $post;
+            echo $pre.$output.$post;
             return true;
         }
         if ( ! $doing_ajax) {
-            echo $pre . $loading . $post;
+            echo $pre.$loading.$post;
             return false;
         }
         ob_start();
@@ -2027,7 +2027,7 @@ 
 
     public function espresso_sponsors_post_box()
     {
-        $templatepath = EE_ADMIN_TEMPLATE . 'admin_general_metabox_contents_espresso_sponsors.template.php';
+        $templatepath = EE_ADMIN_TEMPLATE.'admin_general_metabox_contents_espresso_sponsors.template.php';
         EEH_Template::display_template($templatepath);
     }
 
@@ -2035,7 +2035,7 @@ 
 
     private function _publish_post_box()
     {
-        $meta_box_ref = 'espresso_' . $this->page_slug . '_editor_overview';
+        $meta_box_ref = 'espresso_'.$this->page_slug.'_editor_overview';
         //if there is a array('label' => array('publishbox' => 'some title') ) present in the _page_config array then we'll use that for the metabox label.  Otherwise we'll just use publish (publishbox itself could be an array of labels indexed by routes)
         if ( ! empty($this->_labels['publishbox'])) {
             $box_label = is_array($this->_labels['publishbox']) ? $this->_labels['publishbox'][$this->_req_action] : $this->_labels['publishbox'];
@@ -2052,7 +2052,7 @@ 
     {
         //if we have extra content set let's add it in if not make sure its empty
         $this->_template_args['publish_box_extra_content'] = isset($this->_template_args['publish_box_extra_content']) ? $this->_template_args['publish_box_extra_content'] : '';
-        $template_path = EE_ADMIN_TEMPLATE . 'admin_details_publish_metabox.template.php';
+        $template_path = EE_ADMIN_TEMPLATE.'admin_details_publish_metabox.template.php';
         echo EEH_Template::display_template($template_path, $this->_template_args, true);
     }
 
@@ -2221,7 +2221,7 @@ 
         //if $create_func is true (default) then we automatically create the function for displaying the actual meta box.  If false then we take the $callback reference passed through and use it instead (so callers can define their own callback function/method if they wish)
         $call_back_func = $create_func ? create_function('$post, $metabox',
                 'do_action( "AHEE_log", __FILE__, __FUNCTION__, ""); echo EEH_Template::display_template( $metabox["args"]["template_path"], $metabox["args"]["template_args"], TRUE );') : $callback;
-        add_meta_box(str_replace('_', '-', $action) . '-mbox', $title, $call_back_func, $this->_wp_page_slug, $column, $priority, $callback_args);
+        add_meta_box(str_replace('_', '-', $action).'-mbox', $title, $call_back_func, $this->_wp_page_slug, $column, $priority, $callback_args);
     }
 
 
@@ -2302,9 +2302,9 @@ 
                 : 'espresso-default-admin';
         $template_path = $sidebar
                 ? EE_ADMIN_TEMPLATE . 'admin_details_wrapper.template.php'
-                : EE_ADMIN_TEMPLATE . 'admin_details_wrapper_no_sidebar.template.php';
+                : EE_ADMIN_TEMPLATE.'admin_details_wrapper_no_sidebar.template.php';
         if (defined('DOING_AJAX') && DOING_AJAX) {
-            $template_path = EE_ADMIN_TEMPLATE . 'admin_details_wrapper_no_sidebar_ajax.template.php';
+            $template_path = EE_ADMIN_TEMPLATE.'admin_details_wrapper_no_sidebar_ajax.template.php';
         }
         $template_path = ! empty($this->_column_template_path) ? $this->_column_template_path : $template_path;
         $this->_template_args['post_body_content'] = isset($this->_template_args['admin_page_content']) ? $this->_template_args['admin_page_content'] : '';
@@ -2350,7 +2350,7 @@ 
                         true
                 )
                 : $this->_template_args['preview_action_button'];
-        $template_path = EE_ADMIN_TEMPLATE . 'admin_caf_full_page_preview.template.php';
+        $template_path = EE_ADMIN_TEMPLATE.'admin_caf_full_page_preview.template.php';
         $this->_template_args['admin_page_content'] = EEH_Template::display_template(
                 $template_path,
                 $this->_template_args,
@@ -2401,7 +2401,7 @@ 
         //setup search attributes
         $this->_set_search_attributes();
         $this->_template_args['current_page'] = $this->_wp_page_slug;
-        $template_path = EE_ADMIN_TEMPLATE . 'admin_list_wrapper.template.php';
+        $template_path = EE_ADMIN_TEMPLATE.'admin_list_wrapper.template.php';
         $this->_template_args['table_url'] = defined('DOING_AJAX')
                 ? add_query_arg(array('noheader' => 'true', 'route' => $this->_req_action), $this->_admin_base_url)
                 : add_query_arg(array('route' => $this->_req_action), $this->_admin_base_url);
@@ -2411,29 +2411,29 @@ 
         $ajax_sorting_callback = $this->_list_table_object->get_ajax_sorting_callback();
         if ( ! empty($ajax_sorting_callback)) {
             $sortable_list_table_form_fields = wp_nonce_field(
-                    $ajax_sorting_callback . '_nonce',
-                    $ajax_sorting_callback . '_nonce',
+                    $ajax_sorting_callback.'_nonce',
+                    $ajax_sorting_callback.'_nonce',
                     false,
                     false
             );
             //			$reorder_action = 'espresso_' . $ajax_sorting_callback . '_nonce';
             //			$sortable_list_table_form_fields = wp_nonce_field( $reorder_action, 'ajax_table_sort_nonce', FALSE, FALSE );
-            $sortable_list_table_form_fields .= '<input type="hidden" id="ajax_table_sort_page" name="ajax_table_sort_page" value="' . $this->page_slug . '" />';
-            $sortable_list_table_form_fields .= '<input type="hidden" id="ajax_table_sort_action" name="ajax_table_sort_action" value="' . $ajax_sorting_callback . '" />';
+            $sortable_list_table_form_fields .= '<input type="hidden" id="ajax_table_sort_page" name="ajax_table_sort_page" value="'.$this->page_slug.'" />';
+            $sortable_list_table_form_fields .= '<input type="hidden" id="ajax_table_sort_action" name="ajax_table_sort_action" value="'.$ajax_sorting_callback.'" />';
         } else {
             $sortable_list_table_form_fields = '';
         }
         $this->_template_args['sortable_list_table_form_fields'] = $sortable_list_table_form_fields;
         $hidden_form_fields = isset($this->_template_args['list_table_hidden_fields']) ? $this->_template_args['list_table_hidden_fields'] : '';
-        $nonce_ref = $this->_req_action . '_nonce';
-        $hidden_form_fields .= '<input type="hidden" name="' . $nonce_ref . '" value="' . wp_create_nonce($nonce_ref) . '">';
+        $nonce_ref = $this->_req_action.'_nonce';
+        $hidden_form_fields .= '<input type="hidden" name="'.$nonce_ref.'" value="'.wp_create_nonce($nonce_ref).'">';
         $this->_template_args['list_table_hidden_fields'] = $hidden_form_fields;
         //display message about search results?
         $this->_template_args['before_list_table'] .= ! empty($this->_req_data['s'])
-                ? '<p class="ee-search-results">' . sprintf(
+                ? '<p class="ee-search-results">'.sprintf(
                         esc_html__('Displaying search results for the search string: %1$s', 'event_espresso'),
                         trim($this->_req_data['s'], '%')
-                ) . '</p>'
+                ).'</p>'
                 : '';
         // filter before_list_table template arg
         $this->_template_args['before_list_table'] = apply_filters(
@@ -2507,8 +2507,8 @@ 
      */
     protected function _display_legend($items)
     {
-        $this->_template_args['items'] = apply_filters('FHEE__EE_Admin_Page___display_legend__items', (array)$items, $this);
-        $legend_template = EE_ADMIN_TEMPLATE . 'admin_details_legend.template.php';
+        $this->_template_args['items'] = apply_filters('FHEE__EE_Admin_Page___display_legend__items', (array) $items, $this);
+        $legend_template = EE_ADMIN_TEMPLATE.'admin_details_legend.template.php';
         return EEH_Template::display_template($legend_template, $this->_template_args, true);
     }
 
@@ -2600,13 +2600,13 @@ 
         $this->_nav_tabs = $this->_get_main_nav_tabs();
         $this->_template_args['nav_tabs'] = $this->_nav_tabs;
         $this->_template_args['admin_page_title'] = $this->_admin_page_title;
-        $this->_template_args['before_admin_page_content'] = apply_filters('FHEE_before_admin_page_content' . $this->_current_page . $this->_current_view,
+        $this->_template_args['before_admin_page_content'] = apply_filters('FHEE_before_admin_page_content'.$this->_current_page.$this->_current_view,
                 isset($this->_template_args['before_admin_page_content']) ? $this->_template_args['before_admin_page_content'] : '');
-        $this->_template_args['after_admin_page_content'] = apply_filters('FHEE_after_admin_page_content' . $this->_current_page . $this->_current_view,
+        $this->_template_args['after_admin_page_content'] = apply_filters('FHEE_after_admin_page_content'.$this->_current_page.$this->_current_view,
                 isset($this->_template_args['after_admin_page_content']) ? $this->_template_args['after_admin_page_content'] : '');
         $this->_template_args['after_admin_page_content'] .= $this->_set_help_popup_content();
         // load settings page wrapper template
-        $template_path = ! defined('DOING_AJAX') ? EE_ADMIN_TEMPLATE . 'admin_wrapper.template.php' : EE_ADMIN_TEMPLATE . 'admin_wrapper_ajax.template.php';
+        $template_path = ! defined('DOING_AJAX') ? EE_ADMIN_TEMPLATE . 'admin_wrapper.template.php' : EE_ADMIN_TEMPLATE.'admin_wrapper_ajax.template.php';
         //about page?
         $template_path = $about ? EE_ADMIN_TEMPLATE . 'about_admin_wrapper.template.php' : $template_path;
         if (defined('DOING_AJAX')) {
@@ -2680,20 +2680,20 @@ 
     protected function _set_save_buttons($both = true, $text = array(), $actions = array(), $referrer = null)
     {
         //make sure $text and $actions are in an array
-        $text = (array)$text;
-        $actions = (array)$actions;
+        $text = (array) $text;
+        $actions = (array) $actions;
         $referrer_url = empty($referrer) ? '' : $referrer;
-        $referrer_url = ! $referrer ? '<input type="hidden" id="save_and_close_referrer" name="save_and_close_referrer" value="' . $_SERVER['REQUEST_URI'] . '" />'
-                : '<input type="hidden" id="save_and_close_referrer" name="save_and_close_referrer" value="' . $referrer . '" />';
+        $referrer_url = ! $referrer ? '<input type="hidden" id="save_and_close_referrer" name="save_and_close_referrer" value="'.$_SERVER['REQUEST_URI'].'" />'
+                : '<input type="hidden" id="save_and_close_referrer" name="save_and_close_referrer" value="'.$referrer.'" />';
         $button_text = ! empty($text) ? $text : array(__('Save', 'event_espresso'), __('Save and Close', 'event_espresso'));
         $default_names = array('save', 'save_and_close');
         //add in a hidden index for the current page (so save and close redirects properly)
         $this->_template_args['save_buttons'] = $referrer_url;
         foreach ($button_text as $key => $button) {
             $ref = $default_names[$key];
-            $id = $this->_current_view . '_' . $ref;
+            $id = $this->_current_view.'_'.$ref;
             $name = ! empty($actions) ? $actions[$key] : $ref;
-            $this->_template_args['save_buttons'] .= '<input type="submit" class="button-primary ' . $ref . '" value="' . $button . '" name="' . $name . '" id="' . $id . '" />';
+            $this->_template_args['save_buttons'] .= '<input type="submit" class="button-primary '.$ref.'" value="'.$button.'" name="'.$name.'" id="'.$id.'" />';
             if ( ! $both) {
                 break;
             }
@@ -2729,15 +2729,15 @@ 
     {
         if (empty($route)) {
             $user_msg = __('An error occurred. No action was set for this page\'s form.', 'event_espresso');
-            $dev_msg = $user_msg . "\n" . sprintf(__('The $route argument is required for the %s->%s method.', 'event_espresso'), __FUNCTION__, __CLASS__);
-            EE_Error::add_error($user_msg . '||' . $dev_msg, __FILE__, __FUNCTION__, __LINE__);
+            $dev_msg = $user_msg."\n".sprintf(__('The $route argument is required for the %s->%s method.', 'event_espresso'), __FUNCTION__, __CLASS__);
+            EE_Error::add_error($user_msg.'||'.$dev_msg, __FILE__, __FUNCTION__, __LINE__);
         }
         // open form
-        $this->_template_args['before_admin_page_content'] = '<form name="form" method="post" action="' . $this->_admin_base_url . '" id="' . $route . '_event_form" >';
+        $this->_template_args['before_admin_page_content'] = '<form name="form" method="post" action="'.$this->_admin_base_url.'" id="'.$route.'_event_form" >';
         // add nonce
-        $nonce = wp_nonce_field($route . '_nonce', $route . '_nonce', false, false);
+        $nonce = wp_nonce_field($route.'_nonce', $route.'_nonce', false, false);
         //		$nonce = wp_nonce_field( $route . '_nonce', '_wpnonce', FALSE, FALSE );
-        $this->_template_args['before_admin_page_content'] .= "\n\t" . $nonce;
+        $this->_template_args['before_admin_page_content'] .= "\n\t".$nonce;
         // add REQUIRED form action
         $hidden_fields = array(
                 'action' => array('type' => 'hidden', 'value' => $route),
@@ -2747,8 +2747,8 @@ 
         // generate form fields
         $form_fields = $this->_generate_admin_form_fields($hidden_fields, 'array');
         // add fields to form
-        foreach ((array)$form_fields as $field_name => $form_field) {
-            $this->_template_args['before_admin_page_content'] .= "\n\t" . $form_field['field'];
+        foreach ((array) $form_fields as $field_name => $form_field) {
+            $this->_template_args['before_admin_page_content'] .= "\n\t".$form_field['field'];
         }
         // close form
         $this->_template_args['after_admin_page_content'] = '</form>';
@@ -2829,7 +2829,7 @@ 
          * @param array $query_args       The original query_args array coming into the
          *                                method.
          */
-        do_action('AHEE__' . $classname . '___redirect_after_action__before_redirect_modification_' . $this->_req_action, $query_args);
+        do_action('AHEE__'.$classname.'___redirect_after_action__before_redirect_modification_'.$this->_req_action, $query_args);
         //calculate where we're going (if we have a "save and close" button pushed)
         if (isset($this->_req_data['save_and_close']) && isset($this->_req_data['save_and_close_referrer'])) {
             // even though we have the save_and_close referrer, we need to parse the url for the action in order to generate a nonce
@@ -2845,7 +2845,7 @@ 
             foreach ($this->_default_route_query_args as $query_param => $query_value) {
                 //is there a wp_referer array in our _default_route_query_args property?
                 if ($query_param == 'wp_referer') {
-                    $query_value = (array)$query_value;
+                    $query_value = (array) $query_value;
                     foreach ($query_value as $reference => $value) {
                         if (strpos($reference, 'nonce') !== false) {
                             continue;
@@ -2871,11 +2871,11 @@ 
         // if redirecting to anything other than the main page, add a nonce
         if (isset($query_args['action'])) {
             // manually generate wp_nonce and merge that with the query vars becuz the wp_nonce_url function wrecks havoc on some vars
-            $query_args['_wpnonce'] = wp_create_nonce($query_args['action'] . '_nonce');
+            $query_args['_wpnonce'] = wp_create_nonce($query_args['action'].'_nonce');
         }
         //we're adding some hooks and filters in here for processing any things just before redirects (example: an admin page has done an insert or update and we want to run something after that).
-        do_action('AHEE_redirect_' . $classname . $this->_req_action, $query_args);
-        $redirect_url = apply_filters('FHEE_redirect_' . $classname . $this->_req_action, self::add_query_args_and_nonce($query_args, $redirect_url), $query_args);
+        do_action('AHEE_redirect_'.$classname.$this->_req_action, $query_args);
+        $redirect_url = apply_filters('FHEE_redirect_'.$classname.$this->_req_action, self::add_query_args_and_nonce($query_args, $redirect_url), $query_args);
         // check if we're doing ajax.  If we are then lets just return the results and js can handle how it wants.
         if (defined('DOING_AJAX')) {
             $default_data = array(
@@ -3005,7 +3005,7 @@ 
         $args = array(
                 'label'   => $this->_admin_page_title,
                 'default' => 10,
-                'option'  => $this->_current_page . '_' . $this->_current_view . '_per_page',
+                'option'  => $this->_current_page.'_'.$this->_current_view.'_per_page',
         );
         //ONLY add the screen option if the user has access to it.
         if ($this->check_user_access($this->_current_view, true)) {
@@ -3038,8 +3038,8 @@ 
             $map_option = $option;
             $option = str_replace('-', '_', $option);
             switch ($map_option) {
-                case $this->_current_page . '_' . $this->_current_view . '_per_page':
-                    $value = (int)$value;
+                case $this->_current_page.'_'.$this->_current_view.'_per_page':
+                    $value = (int) $value;
                     if ($value < 1 || $value > 999) {
                         return;
                     }
@@ -3066,7 +3066,7 @@ 
      */
     public function set_template_args($data)
     {
-        $this->_template_args = array_merge($this->_template_args, (array)$data);
+        $this->_template_args = array_merge($this->_template_args, (array) $data);
     }
 
 
@@ -3088,12 +3088,12 @@ 
             $this->_verify_route($route);
         }
         //now let's set the string for what kind of transient we're setting
-        $transient = $notices ? 'ee_rte_n_tx_' . $route . '_' . $user_id : 'rte_tx_' . $route . '_' . $user_id;
+        $transient = $notices ? 'ee_rte_n_tx_'.$route.'_'.$user_id : 'rte_tx_'.$route.'_'.$user_id;
         $data = $notices ? array('notices' => $data) : $data;
         //is there already a transient for this route?  If there is then let's ADD to that transient
         $existing = is_multisite() && is_network_admin() ? get_site_transient($transient) : get_transient($transient);
         if ($existing) {
-            $data = array_merge((array)$data, (array)$existing);
+            $data = array_merge((array) $data, (array) $existing);
         }
         if (is_multisite() && is_network_admin()) {
             set_site_transient($transient, $data, 8);
@@ -3114,7 +3114,7 @@ 
     {
         $user_id = get_current_user_id();
         $route = ! $route ? $this->_req_action : $route;
-        $transient = $notices ? 'ee_rte_n_tx_' . $route . '_' . $user_id : 'rte_tx_' . $route . '_' . $user_id;
+        $transient = $notices ? 'ee_rte_n_tx_'.$route.'_'.$user_id : 'rte_tx_'.$route.'_'.$user_id;
         $data = is_multisite() && is_network_admin() ? get_site_transient($transient) : get_transient($transient);
         //delete transient after retrieval (just in case it hasn't expired);
         if (is_multisite() && is_network_admin()) {
@@ -3355,7 +3355,7 @@ 
      */
     protected function _next_link($url, $class = 'dashicons dashicons-arrow-right')
     {
-        return '<a class="' . $class . '" href="' . $url . '"></a>';
+        return '<a class="'.$class.'" href="'.$url.'"></a>';
     }
 
 
@@ -3369,7 +3369,7 @@ 
      */
     protected function _previous_link($url, $class = 'dashicons dashicons-arrow-left')
     {
-        return '<a class="' . $class . '" href="' . $url . '"></a>';
+        return '<a class="'.$class.'" href="'.$url.'"></a>';
     }
 
 

core/db_classes/EE_Line_Item.class.php

Indentation +1490 added lines, -1490 removed lines

@@ -18,1496 +18,1496 @@
 class EE_Line_Item extends EE_Base_Class implements EEI_Line_Item
 {
 
-    /**
-     * for children line items (currently not a normal relation)
-     *
-     * @type EE_Line_Item[]
-     */
-    protected $_children = array();
-
-    /**
-     * for the parent line item
-     *
-     * @var EE_Line_Item
-     */
-    protected $_parent;
-
-
-
-    /**
-     *
-     * @param array  $props_n_values          incoming values
-     * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
-     *                                        used.)
-     * @param array  $date_formats            incoming date_formats in an array where the first value is the
-     *                                        date_format and the second value is the time format
-     * @return EE_Line_Item
-     * @throws EE_Error
-     */
-    public static function new_instance($props_n_values = array(), $timezone = null, $date_formats = array())
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
-        return $has_object
-            ? $has_object
-            : new self($props_n_values, false, $timezone);
-    }
-
-
-
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
-     *                                the website will be used.
-     * @return EE_Line_Item
-     * @throws EE_Error
-     */
-    public static function new_instance_from_db($props_n_values = array(), $timezone = null)
-    {
-        return new self($props_n_values, true, $timezone);
-    }
-
-
-
-    /**
-     * Adds some defaults if they're not specified
-     *
-     * @param array  $fieldValues
-     * @param bool   $bydb
-     * @param string $timezone
-     * @throws EE_Error
-     */
-    protected function __construct($fieldValues = array(), $bydb = false, $timezone = '')
-    {
-        parent::__construct($fieldValues, $bydb, $timezone);
-        if (! $this->get('LIN_code')) {
-            $this->set_code($this->generate_code());
-        }
-    }
-
-
-
-    /**
-     * Gets ID
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function ID()
-    {
-        return $this->get('LIN_ID');
-    }
-
-
-
-    /**
-     * Gets TXN_ID
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function TXN_ID()
-    {
-        return $this->get('TXN_ID');
-    }
-
-
-
-    /**
-     * Sets TXN_ID
-     *
-     * @param int $TXN_ID
-     * @throws EE_Error
-     */
-    public function set_TXN_ID($TXN_ID)
-    {
-        $this->set('TXN_ID', $TXN_ID);
-    }
-
-
-
-    /**
-     * Gets name
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function name()
-    {
-        $name = $this->get('LIN_name');
-        if (! $name) {
-            $name = ucwords(str_replace('-', ' ', $this->type()));
-        }
-        return $name;
-    }
-
-
-
-    /**
-     * Sets name
-     *
-     * @param string $name
-     * @throws EE_Error
-     */
-    public function set_name($name)
-    {
-        $this->set('LIN_name', $name);
-    }
-
-
-
-    /**
-     * Gets desc
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function desc()
-    {
-        return $this->get('LIN_desc');
-    }
-
-
-
-    /**
-     * Sets desc
-     *
-     * @param string $desc
-     * @throws EE_Error
-     */
-    public function set_desc($desc)
-    {
-        $this->set('LIN_desc', $desc);
-    }
-
-
-
-    /**
-     * Gets quantity
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function quantity()
-    {
-        return $this->get('LIN_quantity');
-    }
-
-
-
-    /**
-     * Sets quantity
-     *
-     * @param int $quantity
-     * @throws EE_Error
-     */
-    public function set_quantity($quantity)
-    {
-        $this->set('LIN_quantity', max($quantity, 0));
-    }
-
-
-
-    /**
-     * Gets item_id
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function OBJ_ID()
-    {
-        return $this->get('OBJ_ID');
-    }
-
-
-
-    /**
-     * Sets item_id
-     *
-     * @param string $item_id
-     * @throws EE_Error
-     */
-    public function set_OBJ_ID($item_id)
-    {
-        $this->set('OBJ_ID', $item_id);
-    }
-
-
-
-    /**
-     * Gets item_type
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function OBJ_type()
-    {
-        return $this->get('OBJ_type');
-    }
-
-
-
-    /**
-     * Gets item_type
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function OBJ_type_i18n()
-    {
-        $obj_type = $this->OBJ_type();
-        switch ($obj_type) {
-            case 'Event':
-                $obj_type = __('Event', 'event_espresso');
-                break;
-            case 'Price':
-                $obj_type = __('Price', 'event_espresso');
-                break;
-            case 'Promotion':
-                $obj_type = __('Promotion', 'event_espresso');
-                break;
-            case 'Ticket':
-                $obj_type = __('Ticket', 'event_espresso');
-                break;
-            case 'Transaction':
-                $obj_type = __('Transaction', 'event_espresso');
-                break;
-        }
-        return apply_filters('FHEE__EE_Line_Item__OBJ_type_i18n', $obj_type, $this);
-    }
-
-
-
-    /**
-     * Sets item_type
-     *
-     * @param string $OBJ_type
-     * @throws EE_Error
-     */
-    public function set_OBJ_type($OBJ_type)
-    {
-        $this->set('OBJ_type', $OBJ_type);
-    }
-
-
-
-    /**
-     * Gets unit_price
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function unit_price()
-    {
-        return $this->get('LIN_unit_price');
-    }
-
-
-
-    /**
-     * Sets unit_price
-     *
-     * @param float $unit_price
-     * @throws EE_Error
-     */
-    public function set_unit_price($unit_price)
-    {
-        $this->set('LIN_unit_price', $unit_price);
-    }
-
-
-
-    /**
-     * Checks if this item is a percentage modifier or not
-     *
-     * @return boolean
-     * @throws EE_Error
-     */
-    public function is_percent()
-    {
-        if ($this->is_tax_sub_total()) {
-            //tax subtotals HAVE a percent on them, that percentage only applies
-            //to taxable items, so its' an exception. Treat it like a flat line item
-            return false;
-        }
-        $unit_price = abs($this->get('LIN_unit_price'));
-        $percent = abs($this->get('LIN_percent'));
-        if ($unit_price < .001 && $percent) {
-            return true;
-        }
-        if ($unit_price >= .001 && ! $percent) {
-            return false;
-        }
-        if ($unit_price >= .001 && $percent) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('A Line Item can not have a unit price of (%s) AND a percent (%s)!', 'event_espresso'),
-                    $unit_price, $percent
-                )
-            );
-        }
-        // if they're both 0, assume its not a percent item
-        return false;
-    }
-
-
-
-    /**
-     * Gets percent (between 100-.001)
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function percent()
-    {
-        return $this->get('LIN_percent');
-    }
-
-
-
-    /**
-     * Sets percent (between 100-0.01)
-     *
-     * @param float $percent
-     * @throws EE_Error
-     */
-    public function set_percent($percent)
-    {
-        $this->set('LIN_percent', $percent);
-    }
-
-
-
-    /**
-     * Gets total
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function total()
-    {
-        return $this->get('LIN_total');
-    }
-
-
-
-    /**
-     * Sets total
-     *
-     * @param float $total
-     * @throws EE_Error
-     */
-    public function set_total($total)
-    {
-        $this->set('LIN_total', $total);
-    }
-
-
-
-    /**
-     * Gets order
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function order()
-    {
-        return $this->get('LIN_order');
-    }
-
-
-
-    /**
-     * Sets order
-     *
-     * @param int $order
-     * @throws EE_Error
-     */
-    public function set_order($order)
-    {
-        $this->set('LIN_order', $order);
-    }
-
-
-
-    /**
-     * Gets parent
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function parent_ID()
-    {
-        return $this->get('LIN_parent');
-    }
-
-
-
-    /**
-     * Sets parent
-     *
-     * @param int $parent
-     * @throws EE_Error
-     */
-    public function set_parent_ID($parent)
-    {
-        $this->set('LIN_parent', $parent);
-    }
-
-
-
-    /**
-     * Gets type
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function type()
-    {
-        return $this->get('LIN_type');
-    }
-
-
-
-    /**
-     * Sets type
-     *
-     * @param string $type
-     * @throws EE_Error
-     */
-    public function set_type($type)
-    {
-        $this->set('LIN_type', $type);
-    }
-
-
-
-    /**
-     * Gets the line item of which this item is a composite. Eg, if this is a subtotal, the parent might be a total\
-     * If this line item is saved to the DB, fetches the parent from the DB. However, if this line item isn't in the DB
-     * it uses its cached reference to its parent line item (which would have been set by `EE_Line_Item::set_parent()`
-     * or indirectly by `EE_Line_item::add_child_line_item()`)
-     *
-     * @return EE_Base_Class|EE_Line_Item
-     * @throws EE_Error
-     */
-    public function parent()
-    {
-        return $this->ID()
-            ? $this->get_model()->get_one_by_ID($this->parent_ID())
-            : $this->_parent;
-    }
-
-
-
-    /**
-     * Gets ALL the children of this line item (ie, all the parts that contribute towards this total).
-     *
-     * @return EE_Base_Class[]|EE_Line_Item[]
-     * @throws EE_Error
-     */
-    public function children()
-    {
-        if ($this->ID()) {
-            return $this->get_model()->get_all(
-                array(
-                    array('LIN_parent' => $this->ID()),
-                    'order_by' => array('LIN_order' => 'ASC'),
-                )
-            );
-        }
-        if (! is_array($this->_children)) {
-            $this->_children = array();
-        }
-        return $this->_children;
-    }
-
-
-
-    /**
-     * Gets code
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function code()
-    {
-        return $this->get('LIN_code');
-    }
-
-
-
-    /**
-     * Sets code
-     *
-     * @param string $code
-     * @throws EE_Error
-     */
-    public function set_code($code)
-    {
-        $this->set('LIN_code', $code);
-    }
-
-
-
-    /**
-     * Gets is_taxable
-     *
-     * @return boolean
-     * @throws EE_Error
-     */
-    public function is_taxable()
-    {
-        return $this->get('LIN_is_taxable');
-    }
-
-
-
-    /**
-     * Sets is_taxable
-     *
-     * @param boolean $is_taxable
-     * @throws EE_Error
-     */
-    public function set_is_taxable($is_taxable)
-    {
-        $this->set('LIN_is_taxable', $is_taxable);
-    }
-
-
-
-    /**
-     * Gets the object that this model-joins-to.
-     * returns one of the model objects that the field OBJ_ID can point to... see the 'OBJ_ID' field on
-     * EEM_Promotion_Object
-     *
-     *        Eg, if this line item join model object is for a ticket, this will return the EE_Ticket object
-     *
-     * @return EE_Base_Class | NULL
-     * @throws EE_Error
-     */
-    public function get_object()
-    {
-        $model_name_of_related_obj = $this->OBJ_type();
-        return $this->get_model()->has_relation($model_name_of_related_obj)
-            ? $this->get_first_related($model_name_of_related_obj)
-            : null;
-    }
-
-
-
-    /**
-     * Like EE_Line_Item::get_object(), but can only ever actually return an EE_Ticket.
-     * (IE, if this line item is for a price or something else, will return NULL)
-     *
-     * @param array $query_params
-     * @return EE_Base_Class|EE_Ticket
-     * @throws EE_Error
-     */
-    public function ticket($query_params = array())
-    {
-        //we're going to assume that when this method is called we always want to receive the attached ticket EVEN if that ticket is archived.  This can be overridden via the incoming $query_params argument
-        $remove_defaults = array('default_where_conditions' => 'none');
-        $query_params = array_merge($remove_defaults, $query_params);
-        return $this->get_first_related('Ticket', $query_params);
-    }
-
-
-
-    /**
-     * Gets the EE_Datetime that's related to the ticket, IF this is for a ticket
-     *
-     * @return EE_Datetime | NULL
-     * @throws EE_Error
-     */
-    public function get_ticket_datetime()
-    {
-        if ($this->OBJ_type() === 'Ticket') {
-            $ticket = $this->ticket();
-            if ($ticket instanceof EE_Ticket) {
-                $datetime = $ticket->first_datetime();
-                if ($datetime instanceof EE_Datetime) {
-                    return $datetime;
-                }
-            }
-        }
-        return null;
-    }
-
-
-
-    /**
-     * Gets the event's name that's related to the ticket, if this is for
-     * a ticket
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function ticket_event_name()
-    {
-        $event_name = esc_html__('Unknown', 'event_espresso');
-        $event = $this->ticket_event();
-        if ($event instanceof EE_Event) {
-            $event_name = $event->name();
-        }
-        return $event_name;
-    }
-
-
-    /**
-     * Gets the event that's related to the ticket, if this line item represents a ticket.
-     *
-     * @return EE_Event|null
-     * @throws EE_Error
-     */
-    public function ticket_event()
-    {
-        $event = null;
-        $ticket = $this->ticket();
-        if ($ticket instanceof EE_Ticket) {
-            $datetime = $ticket->first_datetime();
-            if ($datetime instanceof EE_Datetime) {
-                $event = $datetime->event();
-            }
-        }
-        return $event;
-    }
-
-
-
-    /**
-     * Gets the first datetime for this lien item, assuming it's for a ticket
-     *
-     * @param string $date_format
-     * @param string $time_format
-     * @return string
-     * @throws EE_Error
-     */
-    public function ticket_datetime_start($date_format = '', $time_format = '')
-    {
-        $first_datetime_string = esc_html__('Unknown', 'event_espresso');
-        $datetime = $this->get_ticket_datetime();
-        if ($datetime) {
-            $first_datetime_string = $datetime->start_date_and_time($date_format, $time_format);
-        }
-        return $first_datetime_string;
-    }
-
-
-
-    /**
-     * Adds the line item as a child to this line item. If there is another child line
-     * item with the same LIN_code, it is overwritten by this new one
-     *
-     * @param EEI_Line_Item $line_item
-     * @param bool          $set_order
-     * @return bool success
-     * @throws EE_Error
-     */
-    public function add_child_line_item(EEI_Line_Item $line_item, $set_order = true)
-    {
-        // should we calculate the LIN_order for this line item ?
-        if ($set_order || $line_item->order() === null) {
-            $line_item->set_order(count($this->children()));
-        }
-        if ($this->ID()) {
-            //check for any duplicate line items (with the same code), if so, this replaces it
-            $line_item_with_same_code = $this->get_child_line_item($line_item->code());
-            if ($line_item_with_same_code instanceof EE_Line_Item && $line_item_with_same_code !== $line_item) {
-                $this->delete_child_line_item($line_item_with_same_code->code());
-            }
-            $line_item->set_parent_ID($this->ID());
-            if ($this->TXN_ID()) {
-                $line_item->set_TXN_ID($this->TXN_ID());
-            }
-            return $line_item->save();
-        }
-        $this->_children[$line_item->code()] = $line_item;
-        if ($line_item->parent() !== $this) {
-            $line_item->set_parent($this);
-        }
-        return true;
-    }
-
-
-    /**
-     * Similar to EE_Base_Class::_add_relation_to, except this isn't a normal relation.
-     * If this line item is saved to the DB, this is just a wrapper for set_parent_ID() and save()
-     * However, if this line item is NOT saved to the DB, this just caches the parent on
-     * the EE_Line_Item::_parent property.
-     *
-     * @param EE_Line_Item $line_item
-     * @throws EE_Error
-     */
-    public function set_parent($line_item)
-    {
-        if ($this->ID()) {
-            if (! $line_item->ID()) {
-                $line_item->save();
-            }
-            $this->set_parent_ID($line_item->ID());
-            $this->save();
-        } else {
-            $this->_parent = $line_item;
-            $this->set_parent_ID($line_item->ID());
-        }
-    }
-
-
-
-    /**
-     * Gets the child line item as specified by its code. Because this returns an object (by reference)
-     * you can modify this child line item and the parent (this object) can know about them
-     * because it also has a reference to that line item
-     *
-     * @param string $code
-     * @return EE_Base_Class|EE_Line_Item|EE_Soft_Delete_Base_Class|NULL
-     * @throws EE_Error
-     */
-    public function get_child_line_item($code)
-    {
-        if ($this->ID()) {
-            return $this->get_model()->get_one(
-                array(array('LIN_parent' => $this->ID(), 'LIN_code' => $code))
-            );
-        }
-        return isset($this->_children[$code])
-            ? $this->_children[$code]
-            : null;
-    }
-
-
-
-    /**
-     * Returns how many items are deleted (or, if this item has not been saved ot the DB yet, just how many it HAD
-     * cached on it)
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function delete_children_line_items()
-    {
-        if ($this->ID()) {
-            return $this->get_model()->delete(array(array('LIN_parent' => $this->ID())));
-        }
-        $count = count($this->_children);
-        $this->_children = array();
-        return $count;
-    }
-
-
-
-    /**
-     * If this line item has been saved to the DB, deletes its child with LIN_code == $code. If this line
-     * HAS NOT been saved to the DB, removes the child line item with index $code.
-     * Also searches through the child's children for a matching line item. However, once a line item has been found
-     * and deleted, stops searching (so if there are line items with duplicate codes, only the first one found will be
-     * deleted)
-     *
-     * @param string $code
-     * @param bool   $stop_search_once_found
-     * @return int count of items deleted (or simply removed from the line item's cache, if not has not been saved to
-     *             the DB yet)
-     * @throws EE_Error
-     */
-    public function delete_child_line_item($code, $stop_search_once_found = true)
-    {
-        if ($this->ID()) {
-            $items_deleted = 0;
-            if ($this->code() === $code) {
-                $items_deleted += EEH_Line_Item::delete_all_child_items($this);
-                $items_deleted += (int)$this->delete();
-                if ($stop_search_once_found) {
-                    return $items_deleted;
-                }
-            }
-            foreach ($this->children() as $child_line_item) {
-                $items_deleted += $child_line_item->delete_child_line_item($code, $stop_search_once_found);
-            }
-            return $items_deleted;
-        }
-        if (isset($this->_children[$code])) {
-            unset($this->_children[$code]);
-            return 1;
-        }
-        return 0;
-    }
-
-
-    /**
-     * If this line item is in the database, is of the type subtotal, and
-     * has no children, why do we have it? It should be deleted so this function
-     * does that
-     *
-     * @return boolean
-     * @throws EE_Error
-     */
-    public function delete_if_childless_subtotal()
-    {
-        if ($this->ID() && $this->type() === EEM_Line_Item::type_sub_total && ! $this->children()) {
-            return $this->delete();
-        }
-        return false;
-    }
-
-
-
-    /**
-     * Creates a code and returns a string. doesn't assign the code to this model object
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function generate_code()
-    {
-        // each line item in the cart requires a unique identifier
-        return md5($this->get('OBJ_type') . $this->get('OBJ_ID') . microtime());
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_tax()
-    {
-        return $this->type() === EEM_Line_Item::type_tax;
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_tax_sub_total()
-    {
-        return $this->type() === EEM_Line_Item::type_tax_sub_total;
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_line_item()
-    {
-        return $this->type() === EEM_Line_Item::type_line_item;
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_sub_line_item()
-    {
-        return $this->type() === EEM_Line_Item::type_sub_line_item;
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_sub_total()
-    {
-        return $this->type() === EEM_Line_Item::type_sub_total;
-    }
-
-
-
-    /**
-     * Whether or not this line item is a cancellation line item
-     *
-     * @return boolean
-     * @throws EE_Error
-     */
-    public function is_cancellation()
-    {
-        return EEM_Line_Item::type_cancellation === $this->type();
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_total()
-    {
-        return $this->type() === EEM_Line_Item::type_total;
-    }
-
-
-
-    /**
-     * @return bool
-     * @throws EE_Error
-     */
-    public function is_cancelled()
-    {
-        return $this->type() === EEM_Line_Item::type_cancellation;
-    }
-
-
-
-    /**
-     * @return string like '2, 004.00', formatted according to the localized currency
-     * @throws EE_Error
-     */
-    public function unit_price_no_code()
-    {
-        return $this->get_pretty('LIN_unit_price', 'no_currency_code');
-    }
-
-
-
-    /**
-     * @return string like '2, 004.00', formatted according to the localized currency
-     * @throws EE_Error
-     */
-    public function total_no_code()
-    {
-        return $this->get_pretty('LIN_total', 'no_currency_code');
-    }
-
-
-
-    /**
-     * Gets the final total on this item, taking taxes into account.
-     * Has the side-effect of setting the sub-total as it was just calculated.
-     * If this is used on a grand-total line item, also updates the transaction's
-     * TXN_total (provided this line item is allowed to persist, otherwise we don't
-     * want to change a persistable transaction with info from a non-persistent line item)
-     *
-     * @return float
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     */
-    public function recalculate_total_including_taxes()
-    {
-        $pre_tax_total = $this->recalculate_pre_tax_total();
-        $tax_total = $this->recalculate_taxes_and_tax_total();
-        $total = $pre_tax_total + $tax_total;
-        // no negative totals plz
-        $total = max($total, 0);
-        $this->set_total($total);
-        //only update the related transaction's total
-        //if we intend to save this line item and its a grand total
-        if (
-            $this->allow_persist() && $this->type() === EEM_Line_Item::type_total
-            && $this->transaction()
-               instanceof
-               EE_Transaction
-        ) {
-            $this->transaction()->set_total($total);
-            if ($this->transaction()->ID()) {
-                $this->transaction()->save();
-            }
-        }
-        $this->maybe_save();
-        return $total;
-    }
-
-
-    /**
-     * Recursively goes through all the children and recalculates sub-totals EXCEPT for
-     * tax-sub-totals (they're a an odd beast). Updates the 'total' on each line item according to either its
-     * unit price * quantity or the total of all its children EXCEPT when we're only calculating the taxable total and
-     * when this is called on the grand total
-     *
-     * @return float
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    public function recalculate_pre_tax_total()
-    {
-        $total = 0;
-        $my_children = $this->children();
-        $has_children = ! empty($my_children);
-        if ($has_children && $this->is_line_item()) {
-            $total = $this->_recalculate_pretax_total_for_line_item($total, $my_children);
-        } elseif (! $has_children && ($this->is_sub_line_item() || $this->is_line_item())) {
-            $total = $this->unit_price() * $this->quantity();
-        } elseif ($this->is_sub_total() || $this->is_total()) {
-            $total = $this->_recalculate_pretax_total_for_subtotal($total, $my_children);
-        } elseif ($this->is_tax_sub_total() || $this->is_tax() || $this->is_cancelled()) {
-            // completely ignore tax totals, tax sub-totals, and cancelled line items, when calculating the pre-tax-total
-            return 0;
-        }
-        // ensure all non-line items and non-sub-line-items have a quantity of 1 (except for Events)
-        if (
-            ! $this->is_line_item() && ! $this->is_sub_line_item() && ! $this->is_cancellation()
-        ) {
-            if ($this->OBJ_type() !== 'Event') {
-                $this->set_quantity(1);
-            }
-            if (! $this->is_percent()) {
-                $this->set_unit_price($total);
-            }
-        }
-        //we don't want to bother saving grand totals, because that needs to factor in taxes anyways
-        //so it ought to be
-        if (! $this->is_total()) {
-            $this->set_total($total);
-            //if not a percent line item, make sure we keep the unit price in sync
-            if (
-                $has_children
-                && $this->is_line_item()
-                && ! $this->is_percent()
-            ) {
-                if ($this->quantity() === 0) {
-                    $new_unit_price = 0;
-                } else {
-                    $new_unit_price = $this->total() / $this->quantity();
-                }
-                $this->set_unit_price($new_unit_price);
-            }
-            $this->maybe_save();
-        }
-        return $total;
-    }
-
-
-
-    /**
-     * Calculates the pretax total when this line item is a subtotal or total line item.
-     * Basically does a sum-then-round approach (ie, any percent line item that are children
-     * will calculate their total based on the un-rounded total we're working with so far, and
-     * THEN round the result; instead of rounding as we go like with sub-line-items)
-     *
-     * @param float          $calculated_total_so_far
-     * @param EE_Line_Item[] $my_children
-     * @return float
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _recalculate_pretax_total_for_subtotal($calculated_total_so_far, $my_children = null)
-    {
-        if ($my_children === null) {
-            $my_children = $this->children();
-        }
-        //get the total of all its children
-        foreach ($my_children as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item && ! $child_line_item->is_cancellation()) {
-                // percentage line items are based on total so far
-                if ($child_line_item->is_percent()) {
-                    //round as we go so that the line items add up ok
-                    $percent_total = round(
-                        $calculated_total_so_far * $child_line_item->percent() / 100,
-                        EE_Registry::instance()->CFG->currency->dec_plc
-                    );
-                    $child_line_item->set_total($percent_total);
-                    //so far all percent line items should have a quantity of 1
-                    //(ie, no double percent discounts. Although that might be requested someday)
-                    $child_line_item->set_quantity(1);
-                    $child_line_item->maybe_save();
-                    $calculated_total_so_far += $percent_total;
-                } else {
-                    //verify flat sub-line-item quantities match their parent
-                    if ($child_line_item->is_sub_line_item()) {
-                        $child_line_item->set_quantity($this->quantity());
-                    }
-                    $calculated_total_so_far += $child_line_item->recalculate_pre_tax_total();
-                }
-            }
-        }
-        if ($this->is_sub_total()) {
-            // no negative totals plz
-            $calculated_total_so_far = max($calculated_total_so_far, 0);
-        }
-        return $calculated_total_so_far;
-    }
-
-
-
-    /**
-     * Calculates the pretax total for a normal line item, in a round-then-sum approach
-     * (where each sub-line-item is applied to the base price for the line item
-     * and the result is immediately rounded, rather than summing all the sub-line-items
-     * then rounding, like we do when recalculating pretax totals on totals and subtotals).
-     *
-     * @param float          $calculated_total_so_far
-     * @param EE_Line_Item[] $my_children
-     * @return float
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws EE_Error
-     */
-    protected function _recalculate_pretax_total_for_line_item($calculated_total_so_far, $my_children = null)
-    {
-        if ($my_children === null) {
-            $my_children = $this->children();
-        }
-        //we need to keep track of the running total for a single item,
-        //because we need to round as we go
-        $unit_price_for_total = 0;
-        $quantity_for_total = 1;
-        //get the total of all its children
-        foreach ($my_children as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item && ! $child_line_item->is_cancellation()) {
-                if ($child_line_item->is_percent()) {
-                    //it should be the unit-price-so-far multiplied by teh percent multiplied by the quantity
-                    //not total multiplied by percent, because that ignores rounding along-the-way
-                    $percent_unit_price = round(
-                        $unit_price_for_total * $child_line_item->percent() / 100,
-                        EE_Registry::instance()->CFG->currency->dec_plc
-                    );
-                    $percent_total = $percent_unit_price * $quantity_for_total;
-                    $child_line_item->set_total($percent_total);
-                    //so far all percent line items should have a quantity of 1
-                    //(ie, no double percent discounts. Although that might be requested someday)
-                    $child_line_item->set_quantity(1);
-                    $child_line_item->maybe_save();
-                    $calculated_total_so_far += $percent_total;
-                    $unit_price_for_total += $percent_unit_price;
-                } else {
-                    //verify flat sub-line-item quantities match their parent
-                    if ($child_line_item->is_sub_line_item()) {
-                        $child_line_item->set_quantity($this->quantity());
-                    }
-                    $quantity_for_total = $child_line_item->quantity();
-                    $calculated_total_so_far += $child_line_item->recalculate_pre_tax_total();
-                    $unit_price_for_total += $child_line_item->unit_price();
-                }
-            }
-        }
-        return $calculated_total_so_far;
-    }
-
-
-
-    /**
-     * Recalculates the total on each individual tax (based on a recalculation of the pre-tax total), sets
-     * the totals on each tax calculated, and returns the final tax total
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function recalculate_taxes_and_tax_total()
-    {
-        //get all taxes
-        $taxes = $this->tax_descendants();
-        //calculate the pretax total
-        $taxable_total = $this->taxable_total();
-        $tax_total = 0;
-        foreach ($taxes as $tax) {
-            $total_on_this_tax = $taxable_total * $tax->percent() / 100;
-            //remember the total on this line item
-            $tax->set_total($total_on_this_tax);
-            $tax_total += $tax->total();
-        }
-        $this->_recalculate_tax_sub_total();
-        return $tax_total;
-    }
-
-
-
-    /**
-     * Simply forces all the tax-sub-totals to recalculate. Assumes the taxes have been calculated
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    private function _recalculate_tax_sub_total()
-    {
-        if ($this->is_tax_sub_total()) {
-            $total = 0;
-            $total_percent = 0;
-            //simply loop through all its children (which should be taxes) and sum their total
-            foreach ($this->children() as $child_tax) {
-                if ($child_tax instanceof EE_Line_Item) {
-                    $total += $child_tax->total();
-                    $total_percent += $child_tax->percent();
-                }
-            }
-            $this->set_total($total);
-            $this->set_percent($total_percent);
-        } elseif ($this->is_total()) {
-            foreach ($this->children() as $maybe_tax_subtotal) {
-                if ($maybe_tax_subtotal instanceof EE_Line_Item) {
-                    $maybe_tax_subtotal->_recalculate_tax_sub_total();
-                }
-            }
-        }
-    }
-
-
-
-    /**
-     * Gets the total tax on this line item. Assumes taxes have already been calculated using
-     * recalculate_taxes_and_total
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function get_total_tax()
-    {
-        $this->_recalculate_tax_sub_total();
-        $total = 0;
-        foreach ($this->tax_descendants() as $tax_line_item) {
-            if ($tax_line_item instanceof EE_Line_Item) {
-                $total += $tax_line_item->total();
-            }
-        }
-        return $total;
-    }
-
-
-    /**
-     * Gets the total for all the items purchased only
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function get_items_total()
-    {
-        //by default, let's make sure we're consistent with the existing line item
-        if ($this->is_total()) {
-            $pretax_subtotal_li = EEH_Line_Item::get_pre_tax_subtotal($this);
-            if ($pretax_subtotal_li instanceof EE_Line_Item) {
-                return $pretax_subtotal_li->total();
-            }
-        }
-        $total = 0;
-        foreach ($this->get_items() as $item) {
-            if ($item instanceof EE_Line_Item) {
-                $total += $item->total();
-            }
-        }
-        return $total;
-    }
-
-
-
-    /**
-     * Gets all the descendants (ie, children or children of children etc) that
-     * are of the type 'tax'
-     *
-     * @return EE_Line_Item[]
-     */
-    public function tax_descendants()
-    {
-        return EEH_Line_Item::get_tax_descendants($this);
-    }
-
-
-
-    /**
-     * Gets all the real items purchased which are children of this item
-     *
-     * @return EE_Line_Item[]
-     */
-    public function get_items()
-    {
-        return EEH_Line_Item::get_line_item_descendants($this);
-    }
-
-
-
-    /**
-     * Returns the amount taxable among this line item's children (or if it has no children,
-     * how much of it is taxable). Does not recalculate totals or subtotals.
-     * If the taxable total is negative, (eg, if none of the tickets were taxable,
-     * but there is a "Taxable" discount), returns 0.
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function taxable_total()
-    {
-        $total = 0;
-        if ($this->children()) {
-            foreach ($this->children() as $child_line_item) {
-                if ($child_line_item->type() === EEM_Line_Item::type_line_item && $child_line_item->is_taxable()) {
-                    //if it's a percent item, only take into account the percent
-                    //that's taxable too (the taxable total so far)
-                    if ($child_line_item->is_percent()) {
-                        $total += ($total * $child_line_item->percent() / 100);
-                    } else {
-                        $total += $child_line_item->total();
-                    }
-                } elseif ($child_line_item->type() === EEM_Line_Item::type_sub_total) {
-                    $total += $child_line_item->taxable_total();
-                }
-            }
-        }
-        return max($total, 0);
-    }
-
-
-
-    /**
-     * Gets the transaction for this line item
-     *
-     * @return EE_Base_Class|EE_Transaction
-     * @throws EE_Error
-     */
-    public function transaction()
-    {
-        return $this->get_first_related('Transaction');
-    }
-
-
-
-    /**
-     * Saves this line item to the DB, and recursively saves its descendants.
-     * Because there currently is no proper parent-child relation on the model,
-     * save_this_and_cached() will NOT save the descendants.
-     * Also sets the transaction on this line item and all its descendants before saving
-     *
-     * @param int $txn_id if none is provided, assumes $this->TXN_ID()
-     * @return int count of items saved
-     * @throws EE_Error
-     */
-    public function save_this_and_descendants_to_txn($txn_id = null)
-    {
-        $count = 0;
-        if (! $txn_id) {
-            $txn_id = $this->TXN_ID();
-        }
-        $this->set_TXN_ID($txn_id);
-        $children = $this->children();
-        $count += $this->save()
-            ? 1
-            : 0;
-        foreach ($children as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item) {
-                $child_line_item->set_parent_ID($this->ID());
-                $count += $child_line_item->save_this_and_descendants_to_txn($txn_id);
-            }
-        }
-        return $count;
-    }
-
-
-
-    /**
-     * Saves this line item to the DB, and recursively saves its descendants.
-     *
-     * @return int count of items saved
-     * @throws EE_Error
-     */
-    public function save_this_and_descendants()
-    {
-        $count = 0;
-        $children = $this->children();
-        $count += $this->save()
-            ? 1
-            : 0;
-        foreach ($children as $child_line_item) {
-            if ($child_line_item instanceof EE_Line_Item) {
-                $child_line_item->set_parent_ID($this->ID());
-                $count += $child_line_item->save_this_and_descendants();
-            }
-        }
-        return $count;
-    }
-
-
-
-    /**
-     * returns the cancellation line item if this item was cancelled
-     *
-     * @return EE_Line_Item[]
-     * @throws InvalidArgumentException
-     * @throws InvalidInterfaceException
-     * @throws InvalidDataTypeException
-     * @throws ReflectionException
-     * @throws EE_Error
-     */
-    public function get_cancellations()
-    {
-        EE_Registry::instance()->load_helper('Line_Item');
-        return EEH_Line_Item::get_descendants_of_type($this, EEM_Line_Item::type_cancellation);
-    }
-
-
-
-    /**
-     * If this item has an ID, then this saves it again to update the db
-     *
-     * @return int count of items saved
-     * @throws EE_Error
-     */
-    public function maybe_save()
-    {
-        if ($this->ID()) {
-            return $this->save();
-        }
-        return false;
-    }
-
-
-    /**
-     * clears the cached children and parent from the line item
-     *
-     * @return void
-     */
-    public function clear_related_line_item_cache()
-    {
-        $this->_children = array();
-        $this->_parent = null;
-    }
-
-
-
-    /**
-     * @param bool $raw
-     * @return int
-     * @throws EE_Error
-     */
-    public function timestamp($raw = false)
-    {
-        return $raw
-            ? $this->get_raw('LIN_timestamp')
-            : $this->get('LIN_timestamp');
-    }
-
-
-
-
-    /************************* DEPRECATED *************************/
-    /**
-     * @deprecated 4.6.0
-     * @param string $type one of the constants on EEM_Line_Item
-     * @return EE_Line_Item[]
-     */
-    protected function _get_descendants_of_type($type)
-    {
-        EE_Error::doing_it_wrong(
-            'EE_Line_Item::_get_descendants_of_type()',
-            __('Method replaced with EEH_Line_Item::get_descendants_of_type()', 'event_espresso'), '4.6.0'
-        );
-        return EEH_Line_Item::get_descendants_of_type($this, $type);
-    }
-
-
-
-    /**
-     * @deprecated 4.6.0
-     * @param string $type like one of the EEM_Line_Item::type_*
-     * @return EE_Line_Item
-     */
-    public function get_nearest_descendant_of_type($type)
-    {
-        EE_Error::doing_it_wrong(
-            'EE_Line_Item::get_nearest_descendant_of_type()',
-            __('Method replaced with EEH_Line_Item::get_nearest_descendant_of_type()', 'event_espresso'), '4.6.0'
-        );
-        return EEH_Line_Item::get_nearest_descendant_of_type($this, $type);
-    }
+	/**
+	 * for children line items (currently not a normal relation)
+	 *
+	 * @type EE_Line_Item[]
+	 */
+	protected $_children = array();
+
+	/**
+	 * for the parent line item
+	 *
+	 * @var EE_Line_Item
+	 */
+	protected $_parent;
+
+
+
+	/**
+	 *
+	 * @param array  $props_n_values          incoming values
+	 * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
+	 *                                        used.)
+	 * @param array  $date_formats            incoming date_formats in an array where the first value is the
+	 *                                        date_format and the second value is the time format
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 */
+	public static function new_instance($props_n_values = array(), $timezone = null, $date_formats = array())
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
+		return $has_object
+			? $has_object
+			: new self($props_n_values, false, $timezone);
+	}
+
+
+
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
+	 *                                the website will be used.
+	 * @return EE_Line_Item
+	 * @throws EE_Error
+	 */
+	public static function new_instance_from_db($props_n_values = array(), $timezone = null)
+	{
+		return new self($props_n_values, true, $timezone);
+	}
+
+
+
+	/**
+	 * Adds some defaults if they're not specified
+	 *
+	 * @param array  $fieldValues
+	 * @param bool   $bydb
+	 * @param string $timezone
+	 * @throws EE_Error
+	 */
+	protected function __construct($fieldValues = array(), $bydb = false, $timezone = '')
+	{
+		parent::__construct($fieldValues, $bydb, $timezone);
+		if (! $this->get('LIN_code')) {
+			$this->set_code($this->generate_code());
+		}
+	}
+
+
+
+	/**
+	 * Gets ID
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function ID()
+	{
+		return $this->get('LIN_ID');
+	}
+
+
+
+	/**
+	 * Gets TXN_ID
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function TXN_ID()
+	{
+		return $this->get('TXN_ID');
+	}
+
+
+
+	/**
+	 * Sets TXN_ID
+	 *
+	 * @param int $TXN_ID
+	 * @throws EE_Error
+	 */
+	public function set_TXN_ID($TXN_ID)
+	{
+		$this->set('TXN_ID', $TXN_ID);
+	}
+
+
+
+	/**
+	 * Gets name
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function name()
+	{
+		$name = $this->get('LIN_name');
+		if (! $name) {
+			$name = ucwords(str_replace('-', ' ', $this->type()));
+		}
+		return $name;
+	}
+
+
+
+	/**
+	 * Sets name
+	 *
+	 * @param string $name
+	 * @throws EE_Error
+	 */
+	public function set_name($name)
+	{
+		$this->set('LIN_name', $name);
+	}
+
+
+
+	/**
+	 * Gets desc
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function desc()
+	{
+		return $this->get('LIN_desc');
+	}
+
+
+
+	/**
+	 * Sets desc
+	 *
+	 * @param string $desc
+	 * @throws EE_Error
+	 */
+	public function set_desc($desc)
+	{
+		$this->set('LIN_desc', $desc);
+	}
+
+
+
+	/**
+	 * Gets quantity
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function quantity()
+	{
+		return $this->get('LIN_quantity');
+	}
+
+
+
+	/**
+	 * Sets quantity
+	 *
+	 * @param int $quantity
+	 * @throws EE_Error
+	 */
+	public function set_quantity($quantity)
+	{
+		$this->set('LIN_quantity', max($quantity, 0));
+	}
+
+
+
+	/**
+	 * Gets item_id
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function OBJ_ID()
+	{
+		return $this->get('OBJ_ID');
+	}
+
+
+
+	/**
+	 * Sets item_id
+	 *
+	 * @param string $item_id
+	 * @throws EE_Error
+	 */
+	public function set_OBJ_ID($item_id)
+	{
+		$this->set('OBJ_ID', $item_id);
+	}
+
+
+
+	/**
+	 * Gets item_type
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function OBJ_type()
+	{
+		return $this->get('OBJ_type');
+	}
+
+
+
+	/**
+	 * Gets item_type
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function OBJ_type_i18n()
+	{
+		$obj_type = $this->OBJ_type();
+		switch ($obj_type) {
+			case 'Event':
+				$obj_type = __('Event', 'event_espresso');
+				break;
+			case 'Price':
+				$obj_type = __('Price', 'event_espresso');
+				break;
+			case 'Promotion':
+				$obj_type = __('Promotion', 'event_espresso');
+				break;
+			case 'Ticket':
+				$obj_type = __('Ticket', 'event_espresso');
+				break;
+			case 'Transaction':
+				$obj_type = __('Transaction', 'event_espresso');
+				break;
+		}
+		return apply_filters('FHEE__EE_Line_Item__OBJ_type_i18n', $obj_type, $this);
+	}
+
+
+
+	/**
+	 * Sets item_type
+	 *
+	 * @param string $OBJ_type
+	 * @throws EE_Error
+	 */
+	public function set_OBJ_type($OBJ_type)
+	{
+		$this->set('OBJ_type', $OBJ_type);
+	}
+
+
+
+	/**
+	 * Gets unit_price
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function unit_price()
+	{
+		return $this->get('LIN_unit_price');
+	}
+
+
+
+	/**
+	 * Sets unit_price
+	 *
+	 * @param float $unit_price
+	 * @throws EE_Error
+	 */
+	public function set_unit_price($unit_price)
+	{
+		$this->set('LIN_unit_price', $unit_price);
+	}
+
+
+
+	/**
+	 * Checks if this item is a percentage modifier or not
+	 *
+	 * @return boolean
+	 * @throws EE_Error
+	 */
+	public function is_percent()
+	{
+		if ($this->is_tax_sub_total()) {
+			//tax subtotals HAVE a percent on them, that percentage only applies
+			//to taxable items, so its' an exception. Treat it like a flat line item
+			return false;
+		}
+		$unit_price = abs($this->get('LIN_unit_price'));
+		$percent = abs($this->get('LIN_percent'));
+		if ($unit_price < .001 && $percent) {
+			return true;
+		}
+		if ($unit_price >= .001 && ! $percent) {
+			return false;
+		}
+		if ($unit_price >= .001 && $percent) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('A Line Item can not have a unit price of (%s) AND a percent (%s)!', 'event_espresso'),
+					$unit_price, $percent
+				)
+			);
+		}
+		// if they're both 0, assume its not a percent item
+		return false;
+	}
+
+
+
+	/**
+	 * Gets percent (between 100-.001)
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function percent()
+	{
+		return $this->get('LIN_percent');
+	}
+
+
+
+	/**
+	 * Sets percent (between 100-0.01)
+	 *
+	 * @param float $percent
+	 * @throws EE_Error
+	 */
+	public function set_percent($percent)
+	{
+		$this->set('LIN_percent', $percent);
+	}
+
+
+
+	/**
+	 * Gets total
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function total()
+	{
+		return $this->get('LIN_total');
+	}
+
+
+
+	/**
+	 * Sets total
+	 *
+	 * @param float $total
+	 * @throws EE_Error
+	 */
+	public function set_total($total)
+	{
+		$this->set('LIN_total', $total);
+	}
+
+
+
+	/**
+	 * Gets order
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function order()
+	{
+		return $this->get('LIN_order');
+	}
+
+
+
+	/**
+	 * Sets order
+	 *
+	 * @param int $order
+	 * @throws EE_Error
+	 */
+	public function set_order($order)
+	{
+		$this->set('LIN_order', $order);
+	}
+
+
+
+	/**
+	 * Gets parent
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function parent_ID()
+	{
+		return $this->get('LIN_parent');
+	}
+
+
+
+	/**
+	 * Sets parent
+	 *
+	 * @param int $parent
+	 * @throws EE_Error
+	 */
+	public function set_parent_ID($parent)
+	{
+		$this->set('LIN_parent', $parent);
+	}
+
+
+
+	/**
+	 * Gets type
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function type()
+	{
+		return $this->get('LIN_type');
+	}
+
+
+
+	/**
+	 * Sets type
+	 *
+	 * @param string $type
+	 * @throws EE_Error
+	 */
+	public function set_type($type)
+	{
+		$this->set('LIN_type', $type);
+	}
+
+
+
+	/**
+	 * Gets the line item of which this item is a composite. Eg, if this is a subtotal, the parent might be a total\
+	 * If this line item is saved to the DB, fetches the parent from the DB. However, if this line item isn't in the DB
+	 * it uses its cached reference to its parent line item (which would have been set by `EE_Line_Item::set_parent()`
+	 * or indirectly by `EE_Line_item::add_child_line_item()`)
+	 *
+	 * @return EE_Base_Class|EE_Line_Item
+	 * @throws EE_Error
+	 */
+	public function parent()
+	{
+		return $this->ID()
+			? $this->get_model()->get_one_by_ID($this->parent_ID())
+			: $this->_parent;
+	}
+
+
+
+	/**
+	 * Gets ALL the children of this line item (ie, all the parts that contribute towards this total).
+	 *
+	 * @return EE_Base_Class[]|EE_Line_Item[]
+	 * @throws EE_Error
+	 */
+	public function children()
+	{
+		if ($this->ID()) {
+			return $this->get_model()->get_all(
+				array(
+					array('LIN_parent' => $this->ID()),
+					'order_by' => array('LIN_order' => 'ASC'),
+				)
+			);
+		}
+		if (! is_array($this->_children)) {
+			$this->_children = array();
+		}
+		return $this->_children;
+	}
+
+
+
+	/**
+	 * Gets code
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function code()
+	{
+		return $this->get('LIN_code');
+	}
+
+
+
+	/**
+	 * Sets code
+	 *
+	 * @param string $code
+	 * @throws EE_Error
+	 */
+	public function set_code($code)
+	{
+		$this->set('LIN_code', $code);
+	}
+
+
+
+	/**
+	 * Gets is_taxable
+	 *
+	 * @return boolean
+	 * @throws EE_Error
+	 */
+	public function is_taxable()
+	{
+		return $this->get('LIN_is_taxable');
+	}
+
+
+
+	/**
+	 * Sets is_taxable
+	 *
+	 * @param boolean $is_taxable
+	 * @throws EE_Error
+	 */
+	public function set_is_taxable($is_taxable)
+	{
+		$this->set('LIN_is_taxable', $is_taxable);
+	}
+
+
+
+	/**
+	 * Gets the object that this model-joins-to.
+	 * returns one of the model objects that the field OBJ_ID can point to... see the 'OBJ_ID' field on
+	 * EEM_Promotion_Object
+	 *
+	 *        Eg, if this line item join model object is for a ticket, this will return the EE_Ticket object
+	 *
+	 * @return EE_Base_Class | NULL
+	 * @throws EE_Error
+	 */
+	public function get_object()
+	{
+		$model_name_of_related_obj = $this->OBJ_type();
+		return $this->get_model()->has_relation($model_name_of_related_obj)
+			? $this->get_first_related($model_name_of_related_obj)
+			: null;
+	}
+
+
+
+	/**
+	 * Like EE_Line_Item::get_object(), but can only ever actually return an EE_Ticket.
+	 * (IE, if this line item is for a price or something else, will return NULL)
+	 *
+	 * @param array $query_params
+	 * @return EE_Base_Class|EE_Ticket
+	 * @throws EE_Error
+	 */
+	public function ticket($query_params = array())
+	{
+		//we're going to assume that when this method is called we always want to receive the attached ticket EVEN if that ticket is archived.  This can be overridden via the incoming $query_params argument
+		$remove_defaults = array('default_where_conditions' => 'none');
+		$query_params = array_merge($remove_defaults, $query_params);
+		return $this->get_first_related('Ticket', $query_params);
+	}
+
+
+
+	/**
+	 * Gets the EE_Datetime that's related to the ticket, IF this is for a ticket
+	 *
+	 * @return EE_Datetime | NULL
+	 * @throws EE_Error
+	 */
+	public function get_ticket_datetime()
+	{
+		if ($this->OBJ_type() === 'Ticket') {
+			$ticket = $this->ticket();
+			if ($ticket instanceof EE_Ticket) {
+				$datetime = $ticket->first_datetime();
+				if ($datetime instanceof EE_Datetime) {
+					return $datetime;
+				}
+			}
+		}
+		return null;
+	}
+
+
+
+	/**
+	 * Gets the event's name that's related to the ticket, if this is for
+	 * a ticket
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function ticket_event_name()
+	{
+		$event_name = esc_html__('Unknown', 'event_espresso');
+		$event = $this->ticket_event();
+		if ($event instanceof EE_Event) {
+			$event_name = $event->name();
+		}
+		return $event_name;
+	}
+
+
+	/**
+	 * Gets the event that's related to the ticket, if this line item represents a ticket.
+	 *
+	 * @return EE_Event|null
+	 * @throws EE_Error
+	 */
+	public function ticket_event()
+	{
+		$event = null;
+		$ticket = $this->ticket();
+		if ($ticket instanceof EE_Ticket) {
+			$datetime = $ticket->first_datetime();
+			if ($datetime instanceof EE_Datetime) {
+				$event = $datetime->event();
+			}
+		}
+		return $event;
+	}
+
+
+
+	/**
+	 * Gets the first datetime for this lien item, assuming it's for a ticket
+	 *
+	 * @param string $date_format
+	 * @param string $time_format
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function ticket_datetime_start($date_format = '', $time_format = '')
+	{
+		$first_datetime_string = esc_html__('Unknown', 'event_espresso');
+		$datetime = $this->get_ticket_datetime();
+		if ($datetime) {
+			$first_datetime_string = $datetime->start_date_and_time($date_format, $time_format);
+		}
+		return $first_datetime_string;
+	}
+
+
+
+	/**
+	 * Adds the line item as a child to this line item. If there is another child line
+	 * item with the same LIN_code, it is overwritten by this new one
+	 *
+	 * @param EEI_Line_Item $line_item
+	 * @param bool          $set_order
+	 * @return bool success
+	 * @throws EE_Error
+	 */
+	public function add_child_line_item(EEI_Line_Item $line_item, $set_order = true)
+	{
+		// should we calculate the LIN_order for this line item ?
+		if ($set_order || $line_item->order() === null) {
+			$line_item->set_order(count($this->children()));
+		}
+		if ($this->ID()) {
+			//check for any duplicate line items (with the same code), if so, this replaces it
+			$line_item_with_same_code = $this->get_child_line_item($line_item->code());
+			if ($line_item_with_same_code instanceof EE_Line_Item && $line_item_with_same_code !== $line_item) {
+				$this->delete_child_line_item($line_item_with_same_code->code());
+			}
+			$line_item->set_parent_ID($this->ID());
+			if ($this->TXN_ID()) {
+				$line_item->set_TXN_ID($this->TXN_ID());
+			}
+			return $line_item->save();
+		}
+		$this->_children[$line_item->code()] = $line_item;
+		if ($line_item->parent() !== $this) {
+			$line_item->set_parent($this);
+		}
+		return true;
+	}
+
+
+	/**
+	 * Similar to EE_Base_Class::_add_relation_to, except this isn't a normal relation.
+	 * If this line item is saved to the DB, this is just a wrapper for set_parent_ID() and save()
+	 * However, if this line item is NOT saved to the DB, this just caches the parent on
+	 * the EE_Line_Item::_parent property.
+	 *
+	 * @param EE_Line_Item $line_item
+	 * @throws EE_Error
+	 */
+	public function set_parent($line_item)
+	{
+		if ($this->ID()) {
+			if (! $line_item->ID()) {
+				$line_item->save();
+			}
+			$this->set_parent_ID($line_item->ID());
+			$this->save();
+		} else {
+			$this->_parent = $line_item;
+			$this->set_parent_ID($line_item->ID());
+		}
+	}
+
+
+
+	/**
+	 * Gets the child line item as specified by its code. Because this returns an object (by reference)
+	 * you can modify this child line item and the parent (this object) can know about them
+	 * because it also has a reference to that line item
+	 *
+	 * @param string $code
+	 * @return EE_Base_Class|EE_Line_Item|EE_Soft_Delete_Base_Class|NULL
+	 * @throws EE_Error
+	 */
+	public function get_child_line_item($code)
+	{
+		if ($this->ID()) {
+			return $this->get_model()->get_one(
+				array(array('LIN_parent' => $this->ID(), 'LIN_code' => $code))
+			);
+		}
+		return isset($this->_children[$code])
+			? $this->_children[$code]
+			: null;
+	}
+
+
+
+	/**
+	 * Returns how many items are deleted (or, if this item has not been saved ot the DB yet, just how many it HAD
+	 * cached on it)
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function delete_children_line_items()
+	{
+		if ($this->ID()) {
+			return $this->get_model()->delete(array(array('LIN_parent' => $this->ID())));
+		}
+		$count = count($this->_children);
+		$this->_children = array();
+		return $count;
+	}
+
+
+
+	/**
+	 * If this line item has been saved to the DB, deletes its child with LIN_code == $code. If this line
+	 * HAS NOT been saved to the DB, removes the child line item with index $code.
+	 * Also searches through the child's children for a matching line item. However, once a line item has been found
+	 * and deleted, stops searching (so if there are line items with duplicate codes, only the first one found will be
+	 * deleted)
+	 *
+	 * @param string $code
+	 * @param bool   $stop_search_once_found
+	 * @return int count of items deleted (or simply removed from the line item's cache, if not has not been saved to
+	 *             the DB yet)
+	 * @throws EE_Error
+	 */
+	public function delete_child_line_item($code, $stop_search_once_found = true)
+	{
+		if ($this->ID()) {
+			$items_deleted = 0;
+			if ($this->code() === $code) {
+				$items_deleted += EEH_Line_Item::delete_all_child_items($this);
+				$items_deleted += (int)$this->delete();
+				if ($stop_search_once_found) {
+					return $items_deleted;
+				}
+			}
+			foreach ($this->children() as $child_line_item) {
+				$items_deleted += $child_line_item->delete_child_line_item($code, $stop_search_once_found);
+			}
+			return $items_deleted;
+		}
+		if (isset($this->_children[$code])) {
+			unset($this->_children[$code]);
+			return 1;
+		}
+		return 0;
+	}
+
+
+	/**
+	 * If this line item is in the database, is of the type subtotal, and
+	 * has no children, why do we have it? It should be deleted so this function
+	 * does that
+	 *
+	 * @return boolean
+	 * @throws EE_Error
+	 */
+	public function delete_if_childless_subtotal()
+	{
+		if ($this->ID() && $this->type() === EEM_Line_Item::type_sub_total && ! $this->children()) {
+			return $this->delete();
+		}
+		return false;
+	}
+
+
+
+	/**
+	 * Creates a code and returns a string. doesn't assign the code to this model object
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function generate_code()
+	{
+		// each line item in the cart requires a unique identifier
+		return md5($this->get('OBJ_type') . $this->get('OBJ_ID') . microtime());
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_tax()
+	{
+		return $this->type() === EEM_Line_Item::type_tax;
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_tax_sub_total()
+	{
+		return $this->type() === EEM_Line_Item::type_tax_sub_total;
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_line_item()
+	{
+		return $this->type() === EEM_Line_Item::type_line_item;
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_sub_line_item()
+	{
+		return $this->type() === EEM_Line_Item::type_sub_line_item;
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_sub_total()
+	{
+		return $this->type() === EEM_Line_Item::type_sub_total;
+	}
+
+
+
+	/**
+	 * Whether or not this line item is a cancellation line item
+	 *
+	 * @return boolean
+	 * @throws EE_Error
+	 */
+	public function is_cancellation()
+	{
+		return EEM_Line_Item::type_cancellation === $this->type();
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_total()
+	{
+		return $this->type() === EEM_Line_Item::type_total;
+	}
+
+
+
+	/**
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function is_cancelled()
+	{
+		return $this->type() === EEM_Line_Item::type_cancellation;
+	}
+
+
+
+	/**
+	 * @return string like '2, 004.00', formatted according to the localized currency
+	 * @throws EE_Error
+	 */
+	public function unit_price_no_code()
+	{
+		return $this->get_pretty('LIN_unit_price', 'no_currency_code');
+	}
+
+
+
+	/**
+	 * @return string like '2, 004.00', formatted according to the localized currency
+	 * @throws EE_Error
+	 */
+	public function total_no_code()
+	{
+		return $this->get_pretty('LIN_total', 'no_currency_code');
+	}
+
+
+
+	/**
+	 * Gets the final total on this item, taking taxes into account.
+	 * Has the side-effect of setting the sub-total as it was just calculated.
+	 * If this is used on a grand-total line item, also updates the transaction's
+	 * TXN_total (provided this line item is allowed to persist, otherwise we don't
+	 * want to change a persistable transaction with info from a non-persistent line item)
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 */
+	public function recalculate_total_including_taxes()
+	{
+		$pre_tax_total = $this->recalculate_pre_tax_total();
+		$tax_total = $this->recalculate_taxes_and_tax_total();
+		$total = $pre_tax_total + $tax_total;
+		// no negative totals plz
+		$total = max($total, 0);
+		$this->set_total($total);
+		//only update the related transaction's total
+		//if we intend to save this line item and its a grand total
+		if (
+			$this->allow_persist() && $this->type() === EEM_Line_Item::type_total
+			&& $this->transaction()
+			   instanceof
+			   EE_Transaction
+		) {
+			$this->transaction()->set_total($total);
+			if ($this->transaction()->ID()) {
+				$this->transaction()->save();
+			}
+		}
+		$this->maybe_save();
+		return $total;
+	}
+
+
+	/**
+	 * Recursively goes through all the children and recalculates sub-totals EXCEPT for
+	 * tax-sub-totals (they're a an odd beast). Updates the 'total' on each line item according to either its
+	 * unit price * quantity or the total of all its children EXCEPT when we're only calculating the taxable total and
+	 * when this is called on the grand total
+	 *
+	 * @return float
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	public function recalculate_pre_tax_total()
+	{
+		$total = 0;
+		$my_children = $this->children();
+		$has_children = ! empty($my_children);
+		if ($has_children && $this->is_line_item()) {
+			$total = $this->_recalculate_pretax_total_for_line_item($total, $my_children);
+		} elseif (! $has_children && ($this->is_sub_line_item() || $this->is_line_item())) {
+			$total = $this->unit_price() * $this->quantity();
+		} elseif ($this->is_sub_total() || $this->is_total()) {
+			$total = $this->_recalculate_pretax_total_for_subtotal($total, $my_children);
+		} elseif ($this->is_tax_sub_total() || $this->is_tax() || $this->is_cancelled()) {
+			// completely ignore tax totals, tax sub-totals, and cancelled line items, when calculating the pre-tax-total
+			return 0;
+		}
+		// ensure all non-line items and non-sub-line-items have a quantity of 1 (except for Events)
+		if (
+			! $this->is_line_item() && ! $this->is_sub_line_item() && ! $this->is_cancellation()
+		) {
+			if ($this->OBJ_type() !== 'Event') {
+				$this->set_quantity(1);
+			}
+			if (! $this->is_percent()) {
+				$this->set_unit_price($total);
+			}
+		}
+		//we don't want to bother saving grand totals, because that needs to factor in taxes anyways
+		//so it ought to be
+		if (! $this->is_total()) {
+			$this->set_total($total);
+			//if not a percent line item, make sure we keep the unit price in sync
+			if (
+				$has_children
+				&& $this->is_line_item()
+				&& ! $this->is_percent()
+			) {
+				if ($this->quantity() === 0) {
+					$new_unit_price = 0;
+				} else {
+					$new_unit_price = $this->total() / $this->quantity();
+				}
+				$this->set_unit_price($new_unit_price);
+			}
+			$this->maybe_save();
+		}
+		return $total;
+	}
+
+
+
+	/**
+	 * Calculates the pretax total when this line item is a subtotal or total line item.
+	 * Basically does a sum-then-round approach (ie, any percent line item that are children
+	 * will calculate their total based on the un-rounded total we're working with so far, and
+	 * THEN round the result; instead of rounding as we go like with sub-line-items)
+	 *
+	 * @param float          $calculated_total_so_far
+	 * @param EE_Line_Item[] $my_children
+	 * @return float
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _recalculate_pretax_total_for_subtotal($calculated_total_so_far, $my_children = null)
+	{
+		if ($my_children === null) {
+			$my_children = $this->children();
+		}
+		//get the total of all its children
+		foreach ($my_children as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item && ! $child_line_item->is_cancellation()) {
+				// percentage line items are based on total so far
+				if ($child_line_item->is_percent()) {
+					//round as we go so that the line items add up ok
+					$percent_total = round(
+						$calculated_total_so_far * $child_line_item->percent() / 100,
+						EE_Registry::instance()->CFG->currency->dec_plc
+					);
+					$child_line_item->set_total($percent_total);
+					//so far all percent line items should have a quantity of 1
+					//(ie, no double percent discounts. Although that might be requested someday)
+					$child_line_item->set_quantity(1);
+					$child_line_item->maybe_save();
+					$calculated_total_so_far += $percent_total;
+				} else {
+					//verify flat sub-line-item quantities match their parent
+					if ($child_line_item->is_sub_line_item()) {
+						$child_line_item->set_quantity($this->quantity());
+					}
+					$calculated_total_so_far += $child_line_item->recalculate_pre_tax_total();
+				}
+			}
+		}
+		if ($this->is_sub_total()) {
+			// no negative totals plz
+			$calculated_total_so_far = max($calculated_total_so_far, 0);
+		}
+		return $calculated_total_so_far;
+	}
+
+
+
+	/**
+	 * Calculates the pretax total for a normal line item, in a round-then-sum approach
+	 * (where each sub-line-item is applied to the base price for the line item
+	 * and the result is immediately rounded, rather than summing all the sub-line-items
+	 * then rounding, like we do when recalculating pretax totals on totals and subtotals).
+	 *
+	 * @param float          $calculated_total_so_far
+	 * @param EE_Line_Item[] $my_children
+	 * @return float
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws EE_Error
+	 */
+	protected function _recalculate_pretax_total_for_line_item($calculated_total_so_far, $my_children = null)
+	{
+		if ($my_children === null) {
+			$my_children = $this->children();
+		}
+		//we need to keep track of the running total for a single item,
+		//because we need to round as we go
+		$unit_price_for_total = 0;
+		$quantity_for_total = 1;
+		//get the total of all its children
+		foreach ($my_children as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item && ! $child_line_item->is_cancellation()) {
+				if ($child_line_item->is_percent()) {
+					//it should be the unit-price-so-far multiplied by teh percent multiplied by the quantity
+					//not total multiplied by percent, because that ignores rounding along-the-way
+					$percent_unit_price = round(
+						$unit_price_for_total * $child_line_item->percent() / 100,
+						EE_Registry::instance()->CFG->currency->dec_plc
+					);
+					$percent_total = $percent_unit_price * $quantity_for_total;
+					$child_line_item->set_total($percent_total);
+					//so far all percent line items should have a quantity of 1
+					//(ie, no double percent discounts. Although that might be requested someday)
+					$child_line_item->set_quantity(1);
+					$child_line_item->maybe_save();
+					$calculated_total_so_far += $percent_total;
+					$unit_price_for_total += $percent_unit_price;
+				} else {
+					//verify flat sub-line-item quantities match their parent
+					if ($child_line_item->is_sub_line_item()) {
+						$child_line_item->set_quantity($this->quantity());
+					}
+					$quantity_for_total = $child_line_item->quantity();
+					$calculated_total_so_far += $child_line_item->recalculate_pre_tax_total();
+					$unit_price_for_total += $child_line_item->unit_price();
+				}
+			}
+		}
+		return $calculated_total_so_far;
+	}
+
+
+
+	/**
+	 * Recalculates the total on each individual tax (based on a recalculation of the pre-tax total), sets
+	 * the totals on each tax calculated, and returns the final tax total
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function recalculate_taxes_and_tax_total()
+	{
+		//get all taxes
+		$taxes = $this->tax_descendants();
+		//calculate the pretax total
+		$taxable_total = $this->taxable_total();
+		$tax_total = 0;
+		foreach ($taxes as $tax) {
+			$total_on_this_tax = $taxable_total * $tax->percent() / 100;
+			//remember the total on this line item
+			$tax->set_total($total_on_this_tax);
+			$tax_total += $tax->total();
+		}
+		$this->_recalculate_tax_sub_total();
+		return $tax_total;
+	}
+
+
+
+	/**
+	 * Simply forces all the tax-sub-totals to recalculate. Assumes the taxes have been calculated
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	private function _recalculate_tax_sub_total()
+	{
+		if ($this->is_tax_sub_total()) {
+			$total = 0;
+			$total_percent = 0;
+			//simply loop through all its children (which should be taxes) and sum their total
+			foreach ($this->children() as $child_tax) {
+				if ($child_tax instanceof EE_Line_Item) {
+					$total += $child_tax->total();
+					$total_percent += $child_tax->percent();
+				}
+			}
+			$this->set_total($total);
+			$this->set_percent($total_percent);
+		} elseif ($this->is_total()) {
+			foreach ($this->children() as $maybe_tax_subtotal) {
+				if ($maybe_tax_subtotal instanceof EE_Line_Item) {
+					$maybe_tax_subtotal->_recalculate_tax_sub_total();
+				}
+			}
+		}
+	}
+
+
+
+	/**
+	 * Gets the total tax on this line item. Assumes taxes have already been calculated using
+	 * recalculate_taxes_and_total
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function get_total_tax()
+	{
+		$this->_recalculate_tax_sub_total();
+		$total = 0;
+		foreach ($this->tax_descendants() as $tax_line_item) {
+			if ($tax_line_item instanceof EE_Line_Item) {
+				$total += $tax_line_item->total();
+			}
+		}
+		return $total;
+	}
+
+
+	/**
+	 * Gets the total for all the items purchased only
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function get_items_total()
+	{
+		//by default, let's make sure we're consistent with the existing line item
+		if ($this->is_total()) {
+			$pretax_subtotal_li = EEH_Line_Item::get_pre_tax_subtotal($this);
+			if ($pretax_subtotal_li instanceof EE_Line_Item) {
+				return $pretax_subtotal_li->total();
+			}
+		}
+		$total = 0;
+		foreach ($this->get_items() as $item) {
+			if ($item instanceof EE_Line_Item) {
+				$total += $item->total();
+			}
+		}
+		return $total;
+	}
+
+
+
+	/**
+	 * Gets all the descendants (ie, children or children of children etc) that
+	 * are of the type 'tax'
+	 *
+	 * @return EE_Line_Item[]
+	 */
+	public function tax_descendants()
+	{
+		return EEH_Line_Item::get_tax_descendants($this);
+	}
+
+
+
+	/**
+	 * Gets all the real items purchased which are children of this item
+	 *
+	 * @return EE_Line_Item[]
+	 */
+	public function get_items()
+	{
+		return EEH_Line_Item::get_line_item_descendants($this);
+	}
+
+
+
+	/**
+	 * Returns the amount taxable among this line item's children (or if it has no children,
+	 * how much of it is taxable). Does not recalculate totals or subtotals.
+	 * If the taxable total is negative, (eg, if none of the tickets were taxable,
+	 * but there is a "Taxable" discount), returns 0.
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function taxable_total()
+	{
+		$total = 0;
+		if ($this->children()) {
+			foreach ($this->children() as $child_line_item) {
+				if ($child_line_item->type() === EEM_Line_Item::type_line_item && $child_line_item->is_taxable()) {
+					//if it's a percent item, only take into account the percent
+					//that's taxable too (the taxable total so far)
+					if ($child_line_item->is_percent()) {
+						$total += ($total * $child_line_item->percent() / 100);
+					} else {
+						$total += $child_line_item->total();
+					}
+				} elseif ($child_line_item->type() === EEM_Line_Item::type_sub_total) {
+					$total += $child_line_item->taxable_total();
+				}
+			}
+		}
+		return max($total, 0);
+	}
+
+
+
+	/**
+	 * Gets the transaction for this line item
+	 *
+	 * @return EE_Base_Class|EE_Transaction
+	 * @throws EE_Error
+	 */
+	public function transaction()
+	{
+		return $this->get_first_related('Transaction');
+	}
+
+
+
+	/**
+	 * Saves this line item to the DB, and recursively saves its descendants.
+	 * Because there currently is no proper parent-child relation on the model,
+	 * save_this_and_cached() will NOT save the descendants.
+	 * Also sets the transaction on this line item and all its descendants before saving
+	 *
+	 * @param int $txn_id if none is provided, assumes $this->TXN_ID()
+	 * @return int count of items saved
+	 * @throws EE_Error
+	 */
+	public function save_this_and_descendants_to_txn($txn_id = null)
+	{
+		$count = 0;
+		if (! $txn_id) {
+			$txn_id = $this->TXN_ID();
+		}
+		$this->set_TXN_ID($txn_id);
+		$children = $this->children();
+		$count += $this->save()
+			? 1
+			: 0;
+		foreach ($children as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item) {
+				$child_line_item->set_parent_ID($this->ID());
+				$count += $child_line_item->save_this_and_descendants_to_txn($txn_id);
+			}
+		}
+		return $count;
+	}
+
+
+
+	/**
+	 * Saves this line item to the DB, and recursively saves its descendants.
+	 *
+	 * @return int count of items saved
+	 * @throws EE_Error
+	 */
+	public function save_this_and_descendants()
+	{
+		$count = 0;
+		$children = $this->children();
+		$count += $this->save()
+			? 1
+			: 0;
+		foreach ($children as $child_line_item) {
+			if ($child_line_item instanceof EE_Line_Item) {
+				$child_line_item->set_parent_ID($this->ID());
+				$count += $child_line_item->save_this_and_descendants();
+			}
+		}
+		return $count;
+	}
+
+
+
+	/**
+	 * returns the cancellation line item if this item was cancelled
+	 *
+	 * @return EE_Line_Item[]
+	 * @throws InvalidArgumentException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidDataTypeException
+	 * @throws ReflectionException
+	 * @throws EE_Error
+	 */
+	public function get_cancellations()
+	{
+		EE_Registry::instance()->load_helper('Line_Item');
+		return EEH_Line_Item::get_descendants_of_type($this, EEM_Line_Item::type_cancellation);
+	}
+
+
+
+	/**
+	 * If this item has an ID, then this saves it again to update the db
+	 *
+	 * @return int count of items saved
+	 * @throws EE_Error
+	 */
+	public function maybe_save()
+	{
+		if ($this->ID()) {
+			return $this->save();
+		}
+		return false;
+	}
+
+
+	/**
+	 * clears the cached children and parent from the line item
+	 *
+	 * @return void
+	 */
+	public function clear_related_line_item_cache()
+	{
+		$this->_children = array();
+		$this->_parent = null;
+	}
+
+
+
+	/**
+	 * @param bool $raw
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function timestamp($raw = false)
+	{
+		return $raw
+			? $this->get_raw('LIN_timestamp')
+			: $this->get('LIN_timestamp');
+	}
+
+
+
+
+	/************************* DEPRECATED *************************/
+	/**
+	 * @deprecated 4.6.0
+	 * @param string $type one of the constants on EEM_Line_Item
+	 * @return EE_Line_Item[]
+	 */
+	protected function _get_descendants_of_type($type)
+	{
+		EE_Error::doing_it_wrong(
+			'EE_Line_Item::_get_descendants_of_type()',
+			__('Method replaced with EEH_Line_Item::get_descendants_of_type()', 'event_espresso'), '4.6.0'
+		);
+		return EEH_Line_Item::get_descendants_of_type($this, $type);
+	}
+
+
+
+	/**
+	 * @deprecated 4.6.0
+	 * @param string $type like one of the EEM_Line_Item::type_*
+	 * @return EE_Line_Item
+	 */
+	public function get_nearest_descendant_of_type($type)
+	{
+		EE_Error::doing_it_wrong(
+			'EE_Line_Item::get_nearest_descendant_of_type()',
+			__('Method replaced with EEH_Line_Item::get_nearest_descendant_of_type()', 'event_espresso'), '4.6.0'
+		);
+		return EEH_Line_Item::get_nearest_descendant_of_type($this, $type);
+	}
 
 
 

Spacing +10 added lines, -10 removed lines

@@ -79,7 +79,7 @@ 
     protected function __construct($fieldValues = array(), $bydb = false, $timezone = '')
     {
         parent::__construct($fieldValues, $bydb, $timezone);
-        if (! $this->get('LIN_code')) {
+        if ( ! $this->get('LIN_code')) {
             $this->set_code($this->generate_code());
         }
     }
@@ -134,7 +134,7 @@ 
     public function name()
     {
         $name = $this->get('LIN_name');
-        if (! $name) {
+        if ( ! $name) {
             $name = ucwords(str_replace('-', ' ', $this->type()));
         }
         return $name;
@@ -515,7 +515,7 @@ 
                 )
             );
         }
-        if (! is_array($this->_children)) {
+        if ( ! is_array($this->_children)) {
             $this->_children = array();
         }
         return $this->_children;
@@ -741,7 +741,7 @@ 
     public function set_parent($line_item)
     {
         if ($this->ID()) {
-            if (! $line_item->ID()) {
+            if ( ! $line_item->ID()) {
                 $line_item->save();
             }
             $this->set_parent_ID($line_item->ID());
@@ -815,7 +815,7 @@ 
             $items_deleted = 0;
             if ($this->code() === $code) {
                 $items_deleted += EEH_Line_Item::delete_all_child_items($this);
-                $items_deleted += (int)$this->delete();
+                $items_deleted += (int) $this->delete();
                 if ($stop_search_once_found) {
                     return $items_deleted;
                 }
@@ -860,7 +860,7 @@ 
     public function generate_code()
     {
         // each line item in the cart requires a unique identifier
-        return md5($this->get('OBJ_type') . $this->get('OBJ_ID') . microtime());
+        return md5($this->get('OBJ_type').$this->get('OBJ_ID').microtime());
     }
 
 
@@ -1035,7 +1035,7 @@ 
         $has_children = ! empty($my_children);
         if ($has_children && $this->is_line_item()) {
             $total = $this->_recalculate_pretax_total_for_line_item($total, $my_children);
-        } elseif (! $has_children && ($this->is_sub_line_item() || $this->is_line_item())) {
+        } elseif ( ! $has_children && ($this->is_sub_line_item() || $this->is_line_item())) {
             $total = $this->unit_price() * $this->quantity();
         } elseif ($this->is_sub_total() || $this->is_total()) {
             $total = $this->_recalculate_pretax_total_for_subtotal($total, $my_children);
@@ -1050,13 +1050,13 @@ 
             if ($this->OBJ_type() !== 'Event') {
                 $this->set_quantity(1);
             }
-            if (! $this->is_percent()) {
+            if ( ! $this->is_percent()) {
                 $this->set_unit_price($total);
             }
         }
         //we don't want to bother saving grand totals, because that needs to factor in taxes anyways
         //so it ought to be
-        if (! $this->is_total()) {
+        if ( ! $this->is_total()) {
             $this->set_total($total);
             //if not a percent line item, make sure we keep the unit price in sync
             if (
@@ -1374,7 +1374,7 @@ 
     public function save_this_and_descendants_to_txn($txn_id = null)
     {
         $count = 0;
-        if (! $txn_id) {
+        if ( ! $txn_id) {
             $txn_id = $this->TXN_ID();
         }
         $this->set_TXN_ID($txn_id);

core/libraries/messages/messenger/EE_Email_messenger.class.php

Indentation +641 added lines, -641 removed lines

@@ -8,645 +8,645 @@
 class EE_Email_messenger extends EE_messenger
 {
 
-    /**
-     * To field for email
-     * @var string
-     */
-    protected $_to = '';
-
-
-    /**
-     * CC field for email.
-     * @var string
-     */
-    protected $_cc = '';
-
-    /**
-     * From field for email
-     * @var string
-     */
-    protected $_from = '';
-
-
-    /**
-     * Subject field for email
-     * @var string
-     */
-    protected $_subject = '';
-
-
-    /**
-     * Content field for email
-     * @var string
-     */
-    protected $_content = '';
-
-
-    /**
-     * constructor
-     *
-     * @access public
-     */
-    public function __construct()
-    {
-        //set name and description properties
-        $this->name                = 'email';
-        $this->description         = sprintf(
-            esc_html__(
-                'This messenger delivers messages via email using the built-in %s function included with WordPress',
-                'event_espresso'
-            ),
-            '<code>wp_mail</code>'
-        );
-        $this->label               = array(
-            'singular' => esc_html__('email', 'event_espresso'),
-            'plural'   => esc_html__('emails', 'event_espresso'),
-        );
-        $this->activate_on_install = true;
-
-        //we're using defaults so let's call parent constructor that will take care of setting up all the other
-        // properties
-        parent::__construct();
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details.
-     */
-    protected function _set_admin_pages()
-    {
-        $this->admin_registered_pages = array(
-            'events_edit' => true,
-        );
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details
-     */
-    protected function _set_valid_shortcodes()
-    {
-        //remember by leaving the other fields not set, those fields will inherit the valid shortcodes from the
-        // message type.
-        $this->_valid_shortcodes = array(
-            'to'   => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-            'cc' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-            'from' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
-        );
-    }
-
-
-    /**
-     * see abstract declaration in parent class for details
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_validator_config()
-    {
-        $valid_shortcodes = $this->get_valid_shortcodes();
-
-        $this->_validator_config = array(
-            'to'            => array(
-                'shortcodes' => $valid_shortcodes['to'],
-                'type'       => 'email',
-            ),
-            'cc' => array(
-                'shortcodes' => $valid_shortcodes['to'],
-                'type' => 'email',
-            ),
-            'from'          => array(
-                'shortcodes' => $valid_shortcodes['from'],
-                'type'       => 'email',
-            ),
-            'subject'       => array(
-                'shortcodes' => array(
-                    'organization',
-                    'primary_registration_details',
-                    'event_author',
-                    'primary_registration_details',
-                    'recipient_details',
-                ),
-            ),
-            'content'       => array(
-                'shortcodes' => array(
-                    'event_list',
-                    'attendee_list',
-                    'ticket_list',
-                    'organization',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                    'recipient_details',
-                    'recipient_list',
-                    'transaction',
-                    'messenger',
-                ),
-            ),
-            'attendee_list' => array(
-                'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
-                'required'   => array('[ATTENDEE_LIST]'),
-            ),
-            'event_list'    => array(
-                'shortcodes' => array(
-                    'event',
-                    'attendee_list',
-                    'ticket_list',
-                    'venue',
-                    'datetime_list',
-                    'attendee',
-                    'primary_registration_details',
-                    'primary_registration_list',
-                    'event_author',
-                    'recipient_details',
-                    'recipient_list',
-                ),
-                'required'   => array('[EVENT_LIST]'),
-            ),
-            'ticket_list'   => array(
-                'shortcodes' => array(
-                    'event_list',
-                    'attendee_list',
-                    'ticket',
-                    'datetime_list',
-                    'primary_registration_details',
-                    'recipient_details',
-                ),
-                'required'   => array('[TICKET_LIST]'),
-            ),
-            'datetime_list' => array(
-                'shortcodes' => array('datetime'),
-                'required'   => array('[DATETIME_LIST]'),
-            ),
-        );
-    }
-
-
-    /**
-     * @see   parent EE_messenger class for docs
-     * @since 4.5.0
-     */
-    public function do_secondary_messenger_hooks($sending_messenger_name)
-    {
-        if ($sending_messenger_name = 'html') {
-            add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
-        }
-    }
-
-
-    public function add_email_css(
-        $variation_path,
-        $messenger,
-        $message_type,
-        $type,
-        $variation,
-        $file_extension,
-        $url,
-        EE_Messages_Template_Pack $template_pack
-    ) {
-        //prevent recursion on this callback.
-        remove_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10);
-        $variation = $this->get_variation($template_pack, $message_type, $url, 'main', $variation, false);
-
-        add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
-        return $variation;
-    }
-
-
-    /**
-     * See parent for details
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _set_test_settings_fields()
-    {
-        $this->_test_settings_fields = array(
-            'to'      => array(
-                'input'      => 'text',
-                'label'      => esc_html__('Send a test email to', 'event_espresso'),
-                'type'       => 'email',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-                'default'    => get_bloginfo('admin_email'),
-            ),
-            'subject' => array(
-                'input'      => 'hidden',
-                'label'      => '',
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => false,
-                'format'     => '%s',
-                'value'      => sprintf(__('Test email sent from %s', 'event_espresso'), get_bloginfo('name')),
-                'default'    => '',
-                'css_class'  => '',
-            ),
-        );
-    }
-
-
-    /**
-     * _set_template_fields
-     * This sets up the fields that a messenger requires for the message to go out.
-     *
-     * @access  protected
-     * @return void
-     */
-    protected function _set_template_fields()
-    {
-        // any extra template fields that are NOT used by the messenger but will get used by a messenger field for
-        // shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field
-        // they relate to.  This is important for the Messages_admin to know what fields to display to the user.
-        //  Also, notice that the "values" are equal to the field type that messages admin will use to know what
-        // kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array
-        // indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be
-        // displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and
-        // will not be displayed/parsed.
-        $this->_template_fields = array(
-            'to'      => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'To',
-                    'Label for the "To" field for email addresses',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'cc'      => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'CC',
-                    'Label for the "Carbon Copy" field used for additional email addresses',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => false,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'from'    => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'From',
-                    'Label for the "From" field for email addresses.',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'subject' => array(
-                'input'      => 'text',
-                'label'      => esc_html_x(
-                    'Subject',
-                    'Label for the "Subject" field (short description of contents) for emails.',
-                    'event_espresso'
-                ),
-                'type'       => 'string',
-                'required'   => true,
-                'validation' => true,
-                'css_class'  => 'large-text',
-                'format'     => '%s',
-            ),
-            'content' => '',
-            //left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
-            'extra'   => array(
-                'content' => array(
-                    'main'          => array(
-                        'input'      => 'wp_editor',
-                        'label'      => esc_html__('Main Content', 'event_espresso'),
-                        'type'       => 'string',
-                        'required'   => true,
-                        'validation' => true,
-                        'format'     => '%s',
-                        'rows'       => '15',
-                    ),
-                    'event_list'    => array(
-                        'input'               => 'wp_editor',
-                        'label'               => '[EVENT_LIST]',
-                        'type'                => 'string',
-                        'required'            => true,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'rows'                => '15',
-                        'shortcodes_required' => array('[EVENT_LIST]'),
-                    ),
-                    'attendee_list' => array(
-                        'input'               => 'textarea',
-                        'label'               => '[ATTENDEE_LIST]',
-                        'type'                => 'string',
-                        'required'            => true,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '5',
-                        'shortcodes_required' => array('[ATTENDEE_LIST]'),
-                    ),
-                    'ticket_list'   => array(
-                        'input'               => 'textarea',
-                        'label'               => '[TICKET_LIST]',
-                        'type'                => 'string',
-                        'required'            => true,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '10',
-                        'shortcodes_required' => array('[TICKET_LIST]'),
-                    ),
-                    'datetime_list' => array(
-                        'input'               => 'textarea',
-                        'label'               => '[DATETIME_LIST]',
-                        'type'                => 'string',
-                        'required'            => true,
-                        'validation'          => true,
-                        'format'              => '%s',
-                        'css_class'           => 'large-text',
-                        'rows'                => '10',
-                        'shortcodes_required' => array('[DATETIME_LIST]'),
-                    ),
-                ),
-            ),
-        );
-    }
-
-
-    /**
-     * See definition of this class in parent
-     */
-    protected function _set_default_message_types()
-    {
-        $this->_default_message_types = array(
-            'payment',
-            'payment_refund',
-            'registration',
-            'not_approved_registration',
-            'pending_approval',
-        );
-    }
-
-
-    /**
-     * @see   definition of this class in parent
-     * @since 4.5.0
-     */
-    protected function _set_valid_message_types()
-    {
-        $this->_valid_message_types = array(
-            'payment',
-            'registration',
-            'not_approved_registration',
-            'declined_registration',
-            'cancelled_registration',
-            'pending_approval',
-            'registration_summary',
-            'payment_reminder',
-            'payment_declined',
-            'payment_refund',
-        );
-    }
-
-
-    /**
-     * setting up admin_settings_fields for messenger.
-     */
-    protected function _set_admin_settings_fields()
-    {
-    }
-
-    /**
-     * We just deliver the messages don't kill us!!
-     *
-     * @return bool|WP_Error true if message delivered, false if it didn't deliver OR bubble up any error object if
-     *              present.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _send_message()
-    {
-        $success = wp_mail(
-            html_entity_decode($this->_to, ENT_QUOTES, "UTF-8"),
-            stripslashes(html_entity_decode($this->_subject, ENT_QUOTES, "UTF-8")),
-            $this->_body(),
-            $this->_headers()
-        );
-        if (! $success) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The email did not send successfully.%3$sThe WordPress wp_mail function is used for sending mails but does not give any useful information when an email fails to send.%3$sIt is possible the "to" address (%1$s) or "from" address (%2$s) is invalid.%3$s',
-                        'event_espresso'
-                    ),
-                    $this->_to,
-                    $this->_from,
-                    '<br />'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return $success;
-    }
-
-
-    /**
-     * see parent for definition
-     *
-     * @return string html body of the message content and the related css.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _preview()
-    {
-        return $this->_body(true);
-    }
-
-
-    /**
-     * Setup headers for email
-     *
-     * @access protected
-     * @return string formatted header for email
-     */
-    protected function _headers()
-    {
-        $this->_ensure_has_from_email_address();
-        $from    = stripslashes_deep(html_entity_decode($this->_from, ENT_QUOTES, "UTF-8"));
-        $headers = array(
-            'From:' . $from,
-            'Reply-To:' . $from,
-            'Content-Type:text/html; charset=utf-8',
-        );
-
-        if (! empty($this->_cc)) {
-            $headers[] = 'cc: ' . $this->_cc;
-        }
-
-        //but wait!  Header's for the from is NOT reliable because some plugins don't respect From: as set in the
-        // header.
-        add_filter('wp_mail_from', array($this, 'set_from_address'), 100);
-        add_filter('wp_mail_from_name', array($this, 'set_from_name'), 100);
-        return apply_filters('FHEE__EE_Email_messenger___headers', $headers, $this->_incoming_message_type, $this);
-    }
-
-
-    /**
-     * This simply ensures that the from address is not empty.  If it is, then we use whatever is set as the site email
-     * address for the from address to avoid problems with sending emails.
-     */
-    protected function _ensure_has_from_email_address()
-    {
-        if (empty($this->_from)) {
-            $this->_from = get_bloginfo('admin_email');
-        }
-    }
-
-
-    /**
-     * This simply parses whatever is set as the $_from address and determines if it is in the format {name} <{email}>
-     * or just {email} and returns an array with the "from_name" and "from_email" as the values. Note from_name *MAY*
-     * be empty
-     *
-     * @since 4.3.1
-     * @return array
-     */
-    private function _parse_from()
-    {
-        if (strpos($this->_from, '<') !== false) {
-            $from_name = substr($this->_from, 0, strpos($this->_from, '<') - 1);
-            $from_name = str_replace('"', '', $from_name);
-            $from_name = trim($from_name);
-
-            $from_email = substr($this->_from, strpos($this->_from, '<') + 1);
-            $from_email = str_replace('>', '', $from_email);
-            $from_email = trim($from_email);
-        } elseif (trim($this->_from) !== '') {
-            $from_name  = '';
-            $from_email = trim($this->_from);
-        } else {
-            $from_name = $from_email = '';
-        }
-        return array($from_name, $from_email);
-    }
-
-
-    /**
-     * Callback for the wp_mail_from filter.
-     *
-     * @since 4.3.1
-     * @param string $from_email What the original from_email is.
-     * @return string
-     */
-    public function set_from_address($from_email)
-    {
-        $parsed_from = $this->_parse_from();
-        //includes fallback if the parsing failed.
-        $from_email = is_array($parsed_from) && ! empty($parsed_from[1])
-            ? $parsed_from[1]
-            : get_bloginfo('admin_email');
-        return $from_email;
-    }
-
-
-    /**
-     * Callback fro the wp_mail_from_name filter.
-     *
-     * @since 4.3.1
-     * @param string $from_name The original from_name.
-     * @return string
-     */
-    public function set_from_name($from_name)
-    {
-        $parsed_from = $this->_parse_from();
-        if (is_array($parsed_from) && ! empty($parsed_from[0])) {
-            $from_name = $parsed_from[0];
-        }
-
-        //if from name is "WordPress" let's sub in the site name instead (more friendly!)
-        $from_name = $from_name == 'WordPress' ? get_bloginfo() : $from_name;
-
-        return stripslashes_deep(html_entity_decode($from_name, ENT_QUOTES, "UTF-8"));
-    }
-
-
-    /**
-     * setup body for email
-     *
-     * @param bool $preview will determine whether this is preview template or not.
-     * @return string formatted body for email.
-     * @throws EE_Error
-     * @throws \TijsVerkoyen\CssToInlineStyles\Exception
-     */
-    protected function _body($preview = false)
-    {
-        //setup template args!
-        $this->_template_args = array(
-            'subject'   => $this->_subject,
-            'from'      => $this->_from,
-            'main_body' => wpautop(
-                stripslashes_deep(
-                    html_entity_decode($this->_content, ENT_QUOTES, "UTF-8")
-                )
-            ),
-        );
-        $body                 = $this->_get_main_template($preview);
-
-        /**
-         * This filter allows one to bypass the CSSToInlineStyles tool and leave the body untouched.
-         *
-         * @type    bool $preview Indicates whether a preview is being generated or not.
-         * @return  bool    true  indicates to use the inliner, false bypasses it.
-         */
-        if (apply_filters('FHEE__EE_Email_messenger__apply_CSSInliner ', true, $preview)) {
-            //require CssToInlineStyles library and its dependencies via composer autoloader
-            require_once EE_THIRD_PARTY . 'cssinliner/vendor/autoload.php';
-
-            //now if this isn't a preview, let's setup the body so it has inline styles
-            if (! $preview || ($preview && defined('DOING_AJAX'))) {
-                $style = file_get_contents(
-                    $this->get_variation(
-                        $this->_tmp_pack,
-                        $this->_incoming_message_type->name,
-                        false,
-                        'main',
-                        $this->_variation
-                    ),
-                    true
-                );
-                $CSS   = new TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($body, $style);
-                //for some reason the library has a bracket and new line at the beginning.  This takes care of that.
-                $body  = ltrim($CSS->convert(true), ">\n");
-                //see https://events.codebasehq.com/projects/event-espresso/tickets/8609
-                $body  = ltrim($body, "<?");
-            }
-
-        }
-        return $body;
-    }
-
-
-    /**
-     * This just returns any existing test settings that might be saved in the database
-     *
-     * @access public
-     * @return array
-     */
-    public function get_existing_test_settings()
-    {
-        $settings = parent::get_existing_test_settings();
-        //override subject if present because we always want it to be fresh.
-        if (is_array($settings) && ! empty($settings['subject'])) {
-            $settings['subject'] = sprintf(__('Test email sent from %s', 'event_espresso'), get_bloginfo('name'));
-        }
-        return $settings;
-    }
+	/**
+	 * To field for email
+	 * @var string
+	 */
+	protected $_to = '';
+
+
+	/**
+	 * CC field for email.
+	 * @var string
+	 */
+	protected $_cc = '';
+
+	/**
+	 * From field for email
+	 * @var string
+	 */
+	protected $_from = '';
+
+
+	/**
+	 * Subject field for email
+	 * @var string
+	 */
+	protected $_subject = '';
+
+
+	/**
+	 * Content field for email
+	 * @var string
+	 */
+	protected $_content = '';
+
+
+	/**
+	 * constructor
+	 *
+	 * @access public
+	 */
+	public function __construct()
+	{
+		//set name and description properties
+		$this->name                = 'email';
+		$this->description         = sprintf(
+			esc_html__(
+				'This messenger delivers messages via email using the built-in %s function included with WordPress',
+				'event_espresso'
+			),
+			'<code>wp_mail</code>'
+		);
+		$this->label               = array(
+			'singular' => esc_html__('email', 'event_espresso'),
+			'plural'   => esc_html__('emails', 'event_espresso'),
+		);
+		$this->activate_on_install = true;
+
+		//we're using defaults so let's call parent constructor that will take care of setting up all the other
+		// properties
+		parent::__construct();
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details.
+	 */
+	protected function _set_admin_pages()
+	{
+		$this->admin_registered_pages = array(
+			'events_edit' => true,
+		);
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details
+	 */
+	protected function _set_valid_shortcodes()
+	{
+		//remember by leaving the other fields not set, those fields will inherit the valid shortcodes from the
+		// message type.
+		$this->_valid_shortcodes = array(
+			'to'   => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+			'cc' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+			'from' => array('email', 'event_author', 'primary_registration_details', 'recipient_details'),
+		);
+	}
+
+
+	/**
+	 * see abstract declaration in parent class for details
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_validator_config()
+	{
+		$valid_shortcodes = $this->get_valid_shortcodes();
+
+		$this->_validator_config = array(
+			'to'            => array(
+				'shortcodes' => $valid_shortcodes['to'],
+				'type'       => 'email',
+			),
+			'cc' => array(
+				'shortcodes' => $valid_shortcodes['to'],
+				'type' => 'email',
+			),
+			'from'          => array(
+				'shortcodes' => $valid_shortcodes['from'],
+				'type'       => 'email',
+			),
+			'subject'       => array(
+				'shortcodes' => array(
+					'organization',
+					'primary_registration_details',
+					'event_author',
+					'primary_registration_details',
+					'recipient_details',
+				),
+			),
+			'content'       => array(
+				'shortcodes' => array(
+					'event_list',
+					'attendee_list',
+					'ticket_list',
+					'organization',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+					'recipient_details',
+					'recipient_list',
+					'transaction',
+					'messenger',
+				),
+			),
+			'attendee_list' => array(
+				'shortcodes' => array('attendee', 'event_list', 'ticket_list'),
+				'required'   => array('[ATTENDEE_LIST]'),
+			),
+			'event_list'    => array(
+				'shortcodes' => array(
+					'event',
+					'attendee_list',
+					'ticket_list',
+					'venue',
+					'datetime_list',
+					'attendee',
+					'primary_registration_details',
+					'primary_registration_list',
+					'event_author',
+					'recipient_details',
+					'recipient_list',
+				),
+				'required'   => array('[EVENT_LIST]'),
+			),
+			'ticket_list'   => array(
+				'shortcodes' => array(
+					'event_list',
+					'attendee_list',
+					'ticket',
+					'datetime_list',
+					'primary_registration_details',
+					'recipient_details',
+				),
+				'required'   => array('[TICKET_LIST]'),
+			),
+			'datetime_list' => array(
+				'shortcodes' => array('datetime'),
+				'required'   => array('[DATETIME_LIST]'),
+			),
+		);
+	}
+
+
+	/**
+	 * @see   parent EE_messenger class for docs
+	 * @since 4.5.0
+	 */
+	public function do_secondary_messenger_hooks($sending_messenger_name)
+	{
+		if ($sending_messenger_name = 'html') {
+			add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
+		}
+	}
+
+
+	public function add_email_css(
+		$variation_path,
+		$messenger,
+		$message_type,
+		$type,
+		$variation,
+		$file_extension,
+		$url,
+		EE_Messages_Template_Pack $template_pack
+	) {
+		//prevent recursion on this callback.
+		remove_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10);
+		$variation = $this->get_variation($template_pack, $message_type, $url, 'main', $variation, false);
+
+		add_filter('FHEE__EE_Messages_Template_Pack__get_variation', array($this, 'add_email_css'), 10, 8);
+		return $variation;
+	}
+
+
+	/**
+	 * See parent for details
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _set_test_settings_fields()
+	{
+		$this->_test_settings_fields = array(
+			'to'      => array(
+				'input'      => 'text',
+				'label'      => esc_html__('Send a test email to', 'event_espresso'),
+				'type'       => 'email',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+				'default'    => get_bloginfo('admin_email'),
+			),
+			'subject' => array(
+				'input'      => 'hidden',
+				'label'      => '',
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => false,
+				'format'     => '%s',
+				'value'      => sprintf(__('Test email sent from %s', 'event_espresso'), get_bloginfo('name')),
+				'default'    => '',
+				'css_class'  => '',
+			),
+		);
+	}
+
+
+	/**
+	 * _set_template_fields
+	 * This sets up the fields that a messenger requires for the message to go out.
+	 *
+	 * @access  protected
+	 * @return void
+	 */
+	protected function _set_template_fields()
+	{
+		// any extra template fields that are NOT used by the messenger but will get used by a messenger field for
+		// shortcode replacement get added to the 'extra' key in an associated array indexed by the messenger field
+		// they relate to.  This is important for the Messages_admin to know what fields to display to the user.
+		//  Also, notice that the "values" are equal to the field type that messages admin will use to know what
+		// kind of field to display. The values ALSO have one index labeled "shortcode".  the values in that array
+		// indicate which ACTUAL SHORTCODE (i.e. [SHORTCODE]) is required in order for this extra field to be
+		// displayed.  If the required shortcode isn't part of the shortcodes array then the field is not needed and
+		// will not be displayed/parsed.
+		$this->_template_fields = array(
+			'to'      => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'To',
+					'Label for the "To" field for email addresses',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'cc'      => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'CC',
+					'Label for the "Carbon Copy" field used for additional email addresses',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => false,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'from'    => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'From',
+					'Label for the "From" field for email addresses.',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'subject' => array(
+				'input'      => 'text',
+				'label'      => esc_html_x(
+					'Subject',
+					'Label for the "Subject" field (short description of contents) for emails.',
+					'event_espresso'
+				),
+				'type'       => 'string',
+				'required'   => true,
+				'validation' => true,
+				'css_class'  => 'large-text',
+				'format'     => '%s',
+			),
+			'content' => '',
+			//left empty b/c it is in the "extra array" but messenger still needs needs to know this is a field.
+			'extra'   => array(
+				'content' => array(
+					'main'          => array(
+						'input'      => 'wp_editor',
+						'label'      => esc_html__('Main Content', 'event_espresso'),
+						'type'       => 'string',
+						'required'   => true,
+						'validation' => true,
+						'format'     => '%s',
+						'rows'       => '15',
+					),
+					'event_list'    => array(
+						'input'               => 'wp_editor',
+						'label'               => '[EVENT_LIST]',
+						'type'                => 'string',
+						'required'            => true,
+						'validation'          => true,
+						'format'              => '%s',
+						'rows'                => '15',
+						'shortcodes_required' => array('[EVENT_LIST]'),
+					),
+					'attendee_list' => array(
+						'input'               => 'textarea',
+						'label'               => '[ATTENDEE_LIST]',
+						'type'                => 'string',
+						'required'            => true,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '5',
+						'shortcodes_required' => array('[ATTENDEE_LIST]'),
+					),
+					'ticket_list'   => array(
+						'input'               => 'textarea',
+						'label'               => '[TICKET_LIST]',
+						'type'                => 'string',
+						'required'            => true,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '10',
+						'shortcodes_required' => array('[TICKET_LIST]'),
+					),
+					'datetime_list' => array(
+						'input'               => 'textarea',
+						'label'               => '[DATETIME_LIST]',
+						'type'                => 'string',
+						'required'            => true,
+						'validation'          => true,
+						'format'              => '%s',
+						'css_class'           => 'large-text',
+						'rows'                => '10',
+						'shortcodes_required' => array('[DATETIME_LIST]'),
+					),
+				),
+			),
+		);
+	}
+
+
+	/**
+	 * See definition of this class in parent
+	 */
+	protected function _set_default_message_types()
+	{
+		$this->_default_message_types = array(
+			'payment',
+			'payment_refund',
+			'registration',
+			'not_approved_registration',
+			'pending_approval',
+		);
+	}
+
+
+	/**
+	 * @see   definition of this class in parent
+	 * @since 4.5.0
+	 */
+	protected function _set_valid_message_types()
+	{
+		$this->_valid_message_types = array(
+			'payment',
+			'registration',
+			'not_approved_registration',
+			'declined_registration',
+			'cancelled_registration',
+			'pending_approval',
+			'registration_summary',
+			'payment_reminder',
+			'payment_declined',
+			'payment_refund',
+		);
+	}
+
+
+	/**
+	 * setting up admin_settings_fields for messenger.
+	 */
+	protected function _set_admin_settings_fields()
+	{
+	}
+
+	/**
+	 * We just deliver the messages don't kill us!!
+	 *
+	 * @return bool|WP_Error true if message delivered, false if it didn't deliver OR bubble up any error object if
+	 *              present.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _send_message()
+	{
+		$success = wp_mail(
+			html_entity_decode($this->_to, ENT_QUOTES, "UTF-8"),
+			stripslashes(html_entity_decode($this->_subject, ENT_QUOTES, "UTF-8")),
+			$this->_body(),
+			$this->_headers()
+		);
+		if (! $success) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The email did not send successfully.%3$sThe WordPress wp_mail function is used for sending mails but does not give any useful information when an email fails to send.%3$sIt is possible the "to" address (%1$s) or "from" address (%2$s) is invalid.%3$s',
+						'event_espresso'
+					),
+					$this->_to,
+					$this->_from,
+					'<br />'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return $success;
+	}
+
+
+	/**
+	 * see parent for definition
+	 *
+	 * @return string html body of the message content and the related css.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _preview()
+	{
+		return $this->_body(true);
+	}
+
+
+	/**
+	 * Setup headers for email
+	 *
+	 * @access protected
+	 * @return string formatted header for email
+	 */
+	protected function _headers()
+	{
+		$this->_ensure_has_from_email_address();
+		$from    = stripslashes_deep(html_entity_decode($this->_from, ENT_QUOTES, "UTF-8"));
+		$headers = array(
+			'From:' . $from,
+			'Reply-To:' . $from,
+			'Content-Type:text/html; charset=utf-8',
+		);
+
+		if (! empty($this->_cc)) {
+			$headers[] = 'cc: ' . $this->_cc;
+		}
+
+		//but wait!  Header's for the from is NOT reliable because some plugins don't respect From: as set in the
+		// header.
+		add_filter('wp_mail_from', array($this, 'set_from_address'), 100);
+		add_filter('wp_mail_from_name', array($this, 'set_from_name'), 100);
+		return apply_filters('FHEE__EE_Email_messenger___headers', $headers, $this->_incoming_message_type, $this);
+	}
+
+
+	/**
+	 * This simply ensures that the from address is not empty.  If it is, then we use whatever is set as the site email
+	 * address for the from address to avoid problems with sending emails.
+	 */
+	protected function _ensure_has_from_email_address()
+	{
+		if (empty($this->_from)) {
+			$this->_from = get_bloginfo('admin_email');
+		}
+	}
+
+
+	/**
+	 * This simply parses whatever is set as the $_from address and determines if it is in the format {name} <{email}>
+	 * or just {email} and returns an array with the "from_name" and "from_email" as the values. Note from_name *MAY*
+	 * be empty
+	 *
+	 * @since 4.3.1
+	 * @return array
+	 */
+	private function _parse_from()
+	{
+		if (strpos($this->_from, '<') !== false) {
+			$from_name = substr($this->_from, 0, strpos($this->_from, '<') - 1);
+			$from_name = str_replace('"', '', $from_name);
+			$from_name = trim($from_name);
+
+			$from_email = substr($this->_from, strpos($this->_from, '<') + 1);
+			$from_email = str_replace('>', '', $from_email);
+			$from_email = trim($from_email);
+		} elseif (trim($this->_from) !== '') {
+			$from_name  = '';
+			$from_email = trim($this->_from);
+		} else {
+			$from_name = $from_email = '';
+		}
+		return array($from_name, $from_email);
+	}
+
+
+	/**
+	 * Callback for the wp_mail_from filter.
+	 *
+	 * @since 4.3.1
+	 * @param string $from_email What the original from_email is.
+	 * @return string
+	 */
+	public function set_from_address($from_email)
+	{
+		$parsed_from = $this->_parse_from();
+		//includes fallback if the parsing failed.
+		$from_email = is_array($parsed_from) && ! empty($parsed_from[1])
+			? $parsed_from[1]
+			: get_bloginfo('admin_email');
+		return $from_email;
+	}
+
+
+	/**
+	 * Callback fro the wp_mail_from_name filter.
+	 *
+	 * @since 4.3.1
+	 * @param string $from_name The original from_name.
+	 * @return string
+	 */
+	public function set_from_name($from_name)
+	{
+		$parsed_from = $this->_parse_from();
+		if (is_array($parsed_from) && ! empty($parsed_from[0])) {
+			$from_name = $parsed_from[0];
+		}
+
+		//if from name is "WordPress" let's sub in the site name instead (more friendly!)
+		$from_name = $from_name == 'WordPress' ? get_bloginfo() : $from_name;
+
+		return stripslashes_deep(html_entity_decode($from_name, ENT_QUOTES, "UTF-8"));
+	}
+
+
+	/**
+	 * setup body for email
+	 *
+	 * @param bool $preview will determine whether this is preview template or not.
+	 * @return string formatted body for email.
+	 * @throws EE_Error
+	 * @throws \TijsVerkoyen\CssToInlineStyles\Exception
+	 */
+	protected function _body($preview = false)
+	{
+		//setup template args!
+		$this->_template_args = array(
+			'subject'   => $this->_subject,
+			'from'      => $this->_from,
+			'main_body' => wpautop(
+				stripslashes_deep(
+					html_entity_decode($this->_content, ENT_QUOTES, "UTF-8")
+				)
+			),
+		);
+		$body                 = $this->_get_main_template($preview);
+
+		/**
+		 * This filter allows one to bypass the CSSToInlineStyles tool and leave the body untouched.
+		 *
+		 * @type    bool $preview Indicates whether a preview is being generated or not.
+		 * @return  bool    true  indicates to use the inliner, false bypasses it.
+		 */
+		if (apply_filters('FHEE__EE_Email_messenger__apply_CSSInliner ', true, $preview)) {
+			//require CssToInlineStyles library and its dependencies via composer autoloader
+			require_once EE_THIRD_PARTY . 'cssinliner/vendor/autoload.php';
+
+			//now if this isn't a preview, let's setup the body so it has inline styles
+			if (! $preview || ($preview && defined('DOING_AJAX'))) {
+				$style = file_get_contents(
+					$this->get_variation(
+						$this->_tmp_pack,
+						$this->_incoming_message_type->name,
+						false,
+						'main',
+						$this->_variation
+					),
+					true
+				);
+				$CSS   = new TijsVerkoyen\CssToInlineStyles\CssToInlineStyles($body, $style);
+				//for some reason the library has a bracket and new line at the beginning.  This takes care of that.
+				$body  = ltrim($CSS->convert(true), ">\n");
+				//see https://events.codebasehq.com/projects/event-espresso/tickets/8609
+				$body  = ltrim($body, "<?");
+			}
+
+		}
+		return $body;
+	}
+
+
+	/**
+	 * This just returns any existing test settings that might be saved in the database
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public function get_existing_test_settings()
+	{
+		$settings = parent::get_existing_test_settings();
+		//override subject if present because we always want it to be fresh.
+		if (is_array($settings) && ! empty($settings['subject'])) {
+			$settings['subject'] = sprintf(__('Test email sent from %s', 'event_espresso'), get_bloginfo('name'));
+		}
+		return $settings;
+	}
 }

Spacing +9 added lines, -9 removed lines

@@ -58,7 +58,7 @@ 
             ),
             '<code>wp_mail</code>'
         );
-        $this->label               = array(
+        $this->label = array(
             'singular' => esc_html__('email', 'event_espresso'),
             'plural'   => esc_html__('emails', 'event_espresso'),
         );
@@ -438,7 +438,7 @@ 
             $this->_body(),
             $this->_headers()
         );
-        if (! $success) {
+        if ( ! $success) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -482,13 +482,13 @@ 
         $this->_ensure_has_from_email_address();
         $from    = stripslashes_deep(html_entity_decode($this->_from, ENT_QUOTES, "UTF-8"));
         $headers = array(
-            'From:' . $from,
-            'Reply-To:' . $from,
+            'From:'.$from,
+            'Reply-To:'.$from,
             'Content-Type:text/html; charset=utf-8',
         );
 
-        if (! empty($this->_cc)) {
-            $headers[] = 'cc: ' . $this->_cc;
+        if ( ! empty($this->_cc)) {
+            $headers[] = 'cc: '.$this->_cc;
         }
 
         //but wait!  Header's for the from is NOT reliable because some plugins don't respect From: as set in the
@@ -598,7 +598,7 @@ 
                 )
             ),
         );
-        $body                 = $this->_get_main_template($preview);
+        $body = $this->_get_main_template($preview);
 
         /**
          * This filter allows one to bypass the CSSToInlineStyles tool and leave the body untouched.
@@ -608,10 +608,10 @@ 
          */
         if (apply_filters('FHEE__EE_Email_messenger__apply_CSSInliner ', true, $preview)) {
             //require CssToInlineStyles library and its dependencies via composer autoloader
-            require_once EE_THIRD_PARTY . 'cssinliner/vendor/autoload.php';
+            require_once EE_THIRD_PARTY.'cssinliner/vendor/autoload.php';
 
             //now if this isn't a preview, let's setup the body so it has inline styles
-            if (! $preview || ($preview && defined('DOING_AJAX'))) {
+            if ( ! $preview || ($preview && defined('DOING_AJAX'))) {
                 $style = file_get_contents(
                     $this->get_variation(
                         $this->_tmp_pack,

core/db_classes/EE_Registration.class.php

Doc Comments +4 added lines, -3 removed lines

@@ -1164,7 +1164,7 @@ 
      * Sets deleted
      *
      * @param boolean $deleted
-     * @return bool
+     * @return boolean|null
      * @throws EE_Error
      * @throws RuntimeException
      */
@@ -1222,6 +1222,7 @@ 
      * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
      * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
      *                                          consider registration status as well as datetime access.
+     * @param integer $DTT_OR_ID
      * @return bool
      * @throws EE_Error
      */
@@ -1392,7 +1393,7 @@ 
      * Returns the latest datetime related to this registration (via the ticket attached to the registration).
      * "Latest" is defined by the `DTT_EVT_start` column.
      *
-     * @return EE_Datetime|null
+     * @return null|EE_Base_Class
      * @throws EE_Error
      */
     public function get_latest_related_datetime()
@@ -1688,7 +1689,7 @@ 
      * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
      * Note: if there are no payments on the registration there will be no payment method returned.
      *
-     * @return EE_Payment_Method|null
+     * @return null|EE_Base_Class
      */
     public function payment_method()
     {

Indentation +1860 added lines, -1860 removed lines

@@ -15,1866 +15,1866 @@
 {
 
 
-    /**
-     * Used to reference when a registration has never been checked in.
-     *
-     * @type int
-     */
-    const checkin_status_never = 2;
-
-    /**
-     * Used to reference when a registration has been checked in.
-     *
-     * @type int
-     */
-    const checkin_status_in = 1;
-
-
-    /**
-     * Used to reference when a registration has been checked out.
-     *
-     * @type int
-     */
-    const checkin_status_out = 0;
-
-
-    /**
-     * extra meta key for tracking reg status os trashed registrations
-     *
-     * @type string
-     */
-    const PRE_TRASH_REG_STATUS_KEY = 'pre_trash_registration_status';
-
-
-    /**
-     * extra meta key for tracking if registration has reserved ticket
-     *
-     * @type string
-     */
-    const HAS_RESERVED_TICKET_KEY = 'has_reserved_ticket';
-
-
-    /**
-     * @param array  $props_n_values          incoming values
-     * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
-     *                                        used.)
-     * @param array  $date_formats            incoming date_formats in an array where the first value is the
-     *                                        date_format and the second value is the time format
-     * @return EE_Registration
-     * @throws EE_Error
-     */
-    public static function new_instance($props_n_values = array(), $timezone = null, $date_formats = array())
-    {
-        $has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
-        return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
-    }
-
-
-    /**
-     * @param array  $props_n_values  incoming values from the database
-     * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
-     *                                the website will be used.
-     * @return EE_Registration
-     */
-    public static function new_instance_from_db($props_n_values = array(), $timezone = null)
-    {
-        return new self($props_n_values, true, $timezone);
-    }
-
-
-    /**
-     *        Set Event ID
-     *
-     * @param        int $EVT_ID Event ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_event($EVT_ID = 0)
-    {
-        $this->set('EVT_ID', $EVT_ID);
-    }
-
-
-    /**
-     * Overrides parent set() method so that all calls to set( 'REG_code', $REG_code ) OR set( 'STS_ID', $STS_ID ) can
-     * be routed to internal methods
-     *
-     * @param string $field_name
-     * @param mixed  $field_value
-     * @param bool   $use_default
-     *
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set($field_name, $field_value, $use_default = false)
-    {
-        switch ($field_name) {
-            case 'REG_code':
-                if (! empty($field_value) && $this->reg_code() === null) {
-                    $this->set_reg_code($field_value, $use_default);
-                }
-                break;
-            case 'STS_ID':
-                $this->set_status($field_value, $use_default);
-                break;
-            default:
-                parent::set($field_name, $field_value, $use_default);
-        }
-    }
-
-
-    /**
-     * Set Status ID
-     * updates the registration status and ALSO...
-     * calls reserve_registration_space() if the reg status changes TO approved from any other reg status
-     * calls release_registration_space() if the reg status changes FROM approved to any other reg status
-     *
-     * @param string  $new_STS_ID
-     * @param boolean $use_default
-     *
-     * @return bool
-     * @throws RuntimeException
-     * @throws EE_Error
-     */
-    public function set_status($new_STS_ID = null, $use_default = false)
-    {
-        // get current REG_Status
-        $old_STS_ID = $this->status_ID();
-        // if status has changed
-        if ($old_STS_ID !== $new_STS_ID // and that status has actually changed
-            && ! empty($old_STS_ID) // and that old status is actually set
-            && ! empty($new_STS_ID) // as well as the new status
-            && $this->ID() // ensure registration is in the db
-        ) {
-            // TO approved
-            if ($new_STS_ID === EEM_Registration::status_id_approved) {
-                // reserve a space by incrementing ticket and datetime sold values
-                $this->_reserve_registration_space();
-                do_action('AHEE__EE_Registration__set_status__to_approved', $this, $old_STS_ID, $new_STS_ID);
-                // OR FROM  approved
-            } elseif ($old_STS_ID === EEM_Registration::status_id_approved) {
-                // release a space by decrementing ticket and datetime sold values
-                $this->_release_registration_space();
-                do_action('AHEE__EE_Registration__set_status__from_approved', $this, $old_STS_ID, $new_STS_ID);
-            }
-            // update status
-            parent::set('STS_ID', $new_STS_ID, $use_default);
-            $this->_update_if_canceled_or_declined($new_STS_ID, $old_STS_ID);
-            /** @type EE_Transaction_Payments $transaction_payments */
-            $transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
-            $transaction_payments->recalculate_transaction_total($this->transaction(), false);
-            $this->transaction()->update_status_based_on_total_paid(true);
-            do_action('AHEE__EE_Registration__set_status__after_update', $this, $old_STS_ID, $new_STS_ID);
-            return true;
-        }
-        //even though the old value matches the new value, it's still good to
-        //allow the parent set method to have a say
-        parent::set('STS_ID', $new_STS_ID, $use_default);
-        return true;
-    }
-
-
-    /**
-     * update REGs and TXN when cancelled or declined registrations involved
-     *
-     * @param string $new_STS_ID
-     * @param string $old_STS_ID
-     *
-     * @throws EE_Error
-     */
-    private function _update_if_canceled_or_declined($new_STS_ID, $old_STS_ID)
-    {
-        // these reg statuses should not be considered in any calculations involving monies owing
-        $closed_reg_statuses = EEM_Registration::closed_reg_statuses();
-        // true if registration has been cancelled or declined
-        if (in_array($new_STS_ID, $closed_reg_statuses, true)
-            && ! in_array($old_STS_ID, $closed_reg_statuses, true)
-        ) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            /** @type EE_Transaction_Processor $transaction_processor */
-            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-            // cancelled or declined registration
-            $registration_processor->update_registration_after_being_canceled_or_declined(
-                $this,
-                $closed_reg_statuses
-            );
-            $transaction_processor->update_transaction_after_canceled_or_declined_registration(
-                $this,
-                $closed_reg_statuses,
-                false
-            );
-            do_action('AHEE__EE_Registration__set_status__canceled_or_declined', $this, $old_STS_ID, $new_STS_ID);
-            return;
-        }
-        // true if reinstating cancelled or declined registration
-        if (in_array($old_STS_ID, $closed_reg_statuses, true)
-            && ! in_array($new_STS_ID, $closed_reg_statuses, true)
-        ) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            /** @type EE_Transaction_Processor $transaction_processor */
-            $transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
-            // reinstating cancelled or declined registration
-            $registration_processor->update_canceled_or_declined_registration_after_being_reinstated(
-                $this,
-                $closed_reg_statuses
-            );
-            $transaction_processor->update_transaction_after_reinstating_canceled_registration(
-                $this,
-                $closed_reg_statuses,
-                false
-            );
-            do_action('AHEE__EE_Registration__set_status__after_reinstated', $this, $old_STS_ID, $new_STS_ID);
-        }
-    }
-
-
-    /**
-     *        get Status ID
-     */
-    public function status_ID()
-    {
-        return $this->get('STS_ID');
-    }
-
-
-    /**
-     * increments this registration's related ticket sold and corresponding datetime sold values
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    private function _reserve_registration_space()
-    {
-        // reserved ticket and datetime counts will be decremented as sold counts are incremented
-        // so stop tracking that this reg has a ticket reserved
-        $this->release_reserved_ticket();
-        $ticket = $this->ticket();
-        $ticket->increase_sold();
-        $ticket->save();
-        // possibly set event status to sold out
-        $this->event()->perform_sold_out_status_check();
-    }
-
-
-    /**
-     * Gets the ticket this registration is for
-     *
-     * @param boolean $include_archived whether to include archived tickets or not.
-     *
-     * @return EE_Ticket|EE_Base_Class
-     * @throws EE_Error
-     */
-    public function ticket($include_archived = true)
-    {
-        $query_params = array();
-        if ($include_archived) {
-            $query_params['default_where_conditions'] = 'none';
-        }
-        return $this->get_first_related('Ticket', $query_params);
-    }
-
-
-    /**
-     * Gets the event this registration is for
-     *
-     * @return EE_Event
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function event()
-    {
-        $event = $this->get_first_related('Event');
-        if (! $event instanceof \EE_Event) {
-            throw new EntityNotFoundException('Event ID', $this->event_ID());
-        }
-        return $event;
-    }
-
-
-    /**
-     * Gets the "author" of the registration.  Note that for the purposes of registrations, the author will correspond
-     * with the author of the event this registration is for.
-     *
-     * @since 4.5.0
-     * @return int
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function wp_user()
-    {
-        $event = $this->event();
-        if ($event instanceof EE_Event) {
-            return $event->wp_user();
-        }
-        return 0;
-    }
-
-
-    /**
-     * decrements (subtracts) this registration's related ticket sold and corresponding datetime sold values
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    private function _release_registration_space()
-    {
-        $ticket = $this->ticket();
-        $ticket->decrease_sold();
-        $ticket->save();
-    }
-
-
-    /**
-     * tracks this registration's ticket reservation in extra meta
-     * and can increment related ticket reserved and corresponding datetime reserved values
-     *
-     * @param bool $update_ticket if true, will increment ticket and datetime reserved count
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public function reserve_ticket($update_ticket = false)
-    {
-        if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) === false) {
-            // PLZ NOTE: although checking $update_ticket first would be more efficient,
-            // we NEED to ALWAYS call update_extra_meta(), which is why that is done first
-            if ($this->update_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) && $update_ticket) {
-                $ticket = $this->ticket();
-                $ticket->increase_reserved();
-                $ticket->save();
-            }
-        }
-    }
-
-
-    /**
-     * stops tracking this registration's ticket reservation in extra meta
-     * decrements (subtracts) related ticket reserved and corresponding datetime reserved values
-     *
-     * @param bool $update_ticket if true, will decrement ticket and datetime reserved count
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public function release_reserved_ticket($update_ticket = false)
-    {
-        if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) !== false) {
-            // PLZ NOTE: although checking $update_ticket first would be more efficient,
-            // we NEED to ALWAYS call delete_extra_meta(), which is why that is done first
-            if ($this->delete_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY) && $update_ticket) {
-                $ticket = $this->ticket();
-                $ticket->decrease_reserved();
-                $ticket->save();
-            }
-        }
-    }
-
-
-    /**
-     * Set Attendee ID
-     *
-     * @param        int $ATT_ID Attendee ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_attendee_id($ATT_ID = 0)
-    {
-        $this->set('ATT_ID', $ATT_ID);
-    }
-
-
-    /**
-     *        Set Transaction ID
-     *
-     * @param        int $TXN_ID Transaction ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_transaction_id($TXN_ID = 0)
-    {
-        $this->set('TXN_ID', $TXN_ID);
-    }
-
-
-    /**
-     *        Set Session
-     *
-     * @param    string $REG_session PHP Session ID
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_session($REG_session = '')
-    {
-        $this->set('REG_session', $REG_session);
-    }
-
-
-    /**
-     *        Set Registration URL Link
-     *
-     * @param    string $REG_url_link Registration URL Link
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_reg_url_link($REG_url_link = '')
-    {
-        $this->set('REG_url_link', $REG_url_link);
-    }
-
-
-    /**
-     *        Set Attendee Counter
-     *
-     * @param        int $REG_count Primary Attendee
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_count($REG_count = 1)
-    {
-        $this->set('REG_count', $REG_count);
-    }
-
-
-    /**
-     *        Set Group Size
-     *
-     * @param        boolean $REG_group_size Group Registration
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_group_size($REG_group_size = false)
-    {
-        $this->set('REG_group_size', $REG_group_size);
-    }
-
-
-    /**
-     *    is_not_approved -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_not_approved
-     *
-     * @return        boolean
-     */
-    public function is_not_approved()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_not_approved ? true : false;
-    }
-
-
-    /**
-     *    is_pending_payment -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_pending_payment
-     *
-     * @return        boolean
-     */
-    public function is_pending_payment()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_pending_payment ? true : false;
-    }
-
-
-    /**
-     *    is_approved -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_approved
-     *
-     * @return        boolean
-     */
-    public function is_approved()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_approved ? true : false;
-    }
-
-
-    /**
-     *    is_cancelled -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_cancelled
-     *
-     * @return        boolean
-     */
-    public function is_cancelled()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_cancelled ? true : false;
-    }
-
-
-    /**
-     *    is_declined -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_declined
-     *
-     * @return        boolean
-     */
-    public function is_declined()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_declined ? true : false;
-    }
-
-
-    /**
-     *    is_incomplete -  convenience method that returns TRUE if REG status ID ==
-     *    EEM_Registration::status_id_incomplete
-     *
-     * @return        boolean
-     */
-    public function is_incomplete()
-    {
-        return $this->status_ID() == EEM_Registration::status_id_incomplete ? true : false;
-    }
-
-
-    /**
-     *        Set Registration Date
-     *
-     * @param        mixed ( int or string ) $REG_date Registration Date - Unix timestamp or string representation of
-     *                                                 Date
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_reg_date($REG_date = false)
-    {
-        $this->set('REG_date', $REG_date);
-    }
-
-
-    /**
-     *    Set final price owing for this registration after all ticket/price modifications
-     *
-     * @access    public
-     * @param    float $REG_final_price
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_final_price($REG_final_price = 0.00)
-    {
-        $this->set('REG_final_price', $REG_final_price);
-    }
-
-
-    /**
-     *    Set amount paid towards this registration's final price
-     *
-     * @access    public
-     * @param    float $REG_paid
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_paid($REG_paid = 0.00)
-    {
-        $this->set('REG_paid', $REG_paid);
-    }
-
-
-    /**
-     *        Attendee Is Going
-     *
-     * @param        boolean $REG_att_is_going Attendee Is Going
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_att_is_going($REG_att_is_going = false)
-    {
-        $this->set('REG_att_is_going', $REG_att_is_going);
-    }
-
-
-    /**
-     * Gets the related attendee
-     *
-     * @return EE_Attendee
-     * @throws EE_Error
-     */
-    public function attendee()
-    {
-        return $this->get_first_related('Attendee');
-    }
-
-
-    /**
-     *        get Event ID
-     */
-    public function event_ID()
-    {
-        return $this->get('EVT_ID');
-    }
-
-
-    /**
-     *        get Event ID
-     */
-    public function event_name()
-    {
-        $event = $this->event_obj();
-        if ($event) {
-            return $event->name();
-        } else {
-            return null;
-        }
-    }
-
-
-    /**
-     * Fetches the event this registration is for
-     *
-     * @return EE_Event
-     * @throws EE_Error
-     */
-    public function event_obj()
-    {
-        return $this->get_first_related('Event');
-    }
-
-
-    /**
-     *        get Attendee ID
-     */
-    public function attendee_ID()
-    {
-        return $this->get('ATT_ID');
-    }
-
-
-    /**
-     *        get PHP Session ID
-     */
-    public function session_ID()
-    {
-        return $this->get('REG_session');
-    }
-
-
-    /**
-     * Gets the string which represents the URL trigger for the receipt template in the message template system.
-     *
-     * @param string $messenger 'pdf' or 'html'.  Default 'html'.
-     * @return string
-     */
-    public function receipt_url($messenger = 'html')
-    {
-
-        /**
-         * The below will be deprecated one version after this.  We check first if there is a custom receipt template
-         * already in use on old system.  If there is then we just return the standard url for it.
-         *
-         * @since 4.5.0
-         */
-        $template_relative_path = 'modules/gateways/Invoice/lib/templates/receipt_body.template.php';
-        $has_custom             = EEH_Template::locate_template(
-            $template_relative_path,
-            array(),
-            true,
-            true,
-            true
-        );
-
-        if ($has_custom) {
-            return add_query_arg(array('receipt' => 'true'), $this->invoice_url('launch'));
-        }
-        return apply_filters('FHEE__EE_Registration__receipt_url__receipt_url', '', $this, $messenger, 'receipt');
-    }
-
-
-    /**
-     * Gets the string which represents the URL trigger for the invoice template in the message template system.
-     *
-     * @param string $messenger 'pdf' or 'html'.  Default 'html'.
-     * @return string
-     * @throws EE_Error
-     */
-    public function invoice_url($messenger = 'html')
-    {
-        /**
-         * The below will be deprecated one version after this.  We check first if there is a custom invoice template
-         * already in use on old system.  If there is then we just return the standard url for it.
-         *
-         * @since 4.5.0
-         */
-        $template_relative_path = 'modules/gateways/Invoice/lib/templates/invoice_body.template.php';
-        $has_custom             = EEH_Template::locate_template(
-            $template_relative_path,
-            array(),
-            true,
-            true,
-            true
-        );
-
-        if ($has_custom) {
-            if ($messenger == 'html') {
-                return $this->invoice_url('launch');
-            }
-            $route = $messenger == 'download' || $messenger == 'pdf' ? 'download_invoice' : 'launch_invoice';
-
-            $query_args = array('ee' => $route, 'id' => $this->reg_url_link());
-            if ($messenger == 'html') {
-                $query_args['html'] = true;
-            }
-            return add_query_arg($query_args, get_permalink(EE_Registry::instance()->CFG->core->thank_you_page_id));
-        }
-        return apply_filters('FHEE__EE_Registration__invoice_url__invoice_url', '', $this, $messenger, 'invoice');
-    }
-
-
-    /**
-     * get Registration URL Link
-     *
-     * @access public
-     * @return string
-     * @throws EE_Error
-     */
-    public function reg_url_link()
-    {
-        return (string) $this->get('REG_url_link');
-    }
-
-
-    /**
-     * Echoes out invoice_url()
-     *
-     * @param string $type 'download','launch', or 'html' (default is 'launch')
-     * @return void
-     * @throws EE_Error
-     */
-    public function e_invoice_url($type = 'launch')
-    {
-        echo $this->invoice_url($type);
-    }
-
-
-    /**
-     * Echoes out payment_overview_url
-     */
-    public function e_payment_overview_url()
-    {
-        echo $this->payment_overview_url();
-    }
-
-
-    /**
-     * Gets the URL of the thank you page with this registration REG_url_link added as
-     * a query parameter
-     *
-     * @param bool $clear_session Set to true when you want to clear the session on revisiting the
-     *                            payment overview url.
-     * @return string
-     * @throws EE_Error
-     */
-    public function payment_overview_url($clear_session = false)
-    {
-        return add_query_arg(array(
-            'e_reg_url_link' => $this->reg_url_link(),
-            'step'           => 'payment_options',
-            'revisit'        => true,
-            'clear_session' => (bool) $clear_session
-        ), EE_Registry::instance()->CFG->core->reg_page_url());
-    }
-
-
-    /**
-     * Gets the URL of the thank you page with this registration REG_url_link added as
-     * a query parameter
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function edit_attendee_information_url()
-    {
-        return add_query_arg(array(
-            'e_reg_url_link' => $this->reg_url_link(),
-            'step'           => 'attendee_information',
-            'revisit'        => true,
-        ), EE_Registry::instance()->CFG->core->reg_page_url());
-    }
-
-
-    /**
-     * Simply generates and returns the appropriate admin_url link to edit this registration
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_edit_url()
-    {
-        return EEH_URL::add_query_args_and_nonce(array(
-            'page'    => 'espresso_registrations',
-            'action'  => 'view_registration',
-            '_REG_ID' => $this->ID(),
-        ), admin_url('admin.php'));
-    }
-
-
-    /**
-     *    is_primary_registrant?
-     */
-    public function is_primary_registrant()
-    {
-        return $this->get('REG_count') == 1 ? true : false;
-    }
-
-
-    /**
-     * This returns the primary registration object for this registration group (which may be this object).
-     *
-     * @return EE_Registration
-     * @throws EE_Error
-     */
-    public function get_primary_registration()
-    {
-        if ($this->is_primary_registrant()) {
-            return $this;
-        }
-
-        //k reg_count !== 1 so let's get the EE_Registration object matching this txn_id and reg_count == 1
-        /** @var EE_Registration $primary_registrant */
-        $primary_registrant = EEM_Registration::instance()->get_one(array(
-            array(
-                'TXN_ID'    => $this->transaction_ID(),
-                'REG_count' => 1,
-            ),
-        ));
-        return $primary_registrant;
-    }
-
-
-    /**
-     *        get  Attendee Number
-     *
-     * @access        public
-     */
-    public function count()
-    {
-        return $this->get('REG_count');
-    }
-
-
-    /**
-     *        get Group Size
-     */
-    public function group_size()
-    {
-        return $this->get('REG_group_size');
-    }
-
-
-    /**
-     *        get Registration Date
-     */
-    public function date()
-    {
-        return $this->get('REG_date');
-    }
-
-
-    /**
-     * gets a pretty date
-     *
-     * @param string $date_format
-     * @param string $time_format
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_date($date_format = null, $time_format = null)
-    {
-        return $this->get_datetime('REG_date', $date_format, $time_format);
-    }
-
-
-    /**
-     * final_price
-     * the registration's share of the transaction total, so that the
-     * sum of all the transaction's REG_final_prices equal the transaction's total
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function final_price()
-    {
-        return $this->get('REG_final_price');
-    }
-
-
-    /**
-     * pretty_final_price
-     *  final price as formatted string, with correct decimal places and currency symbol
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_final_price()
-    {
-        return $this->get_pretty('REG_final_price');
-    }
-
-
-    /**
-     * get paid (yeah)
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function paid()
-    {
-        return $this->get('REG_paid');
-    }
-
-
-    /**
-     * pretty_paid
-     *
-     * @return float
-     * @throws EE_Error
-     */
-    public function pretty_paid()
-    {
-        return $this->get_pretty('REG_paid');
-    }
-
-
-    /**
-     * owes_monies_and_can_pay
-     * whether or not this registration has monies owing and it's' status allows payment
-     *
-     * @param array $requires_payment
-     * @return bool
-     * @throws EE_Error
-     */
-    public function owes_monies_and_can_pay($requires_payment = array())
-    {
-        // these reg statuses require payment (if event is not free)
-        $requires_payment = ! empty($requires_payment)
-            ? $requires_payment
-            : EEM_Registration::reg_statuses_that_allow_payment();
-        if (in_array($this->status_ID(), $requires_payment) &&
-            $this->final_price() != 0 &&
-            $this->final_price() != $this->paid()
-        ) {
-            return true;
-        } else {
-            return false;
-        }
-    }
-
-
-    /**
-     * Prints out the return value of $this->pretty_status()
-     *
-     * @param bool $show_icons
-     * @return void
-     * @throws EE_Error
-     */
-    public function e_pretty_status($show_icons = false)
-    {
-        echo $this->pretty_status($show_icons);
-    }
-
-
-    /**
-     * Returns a nice version of the status for displaying to customers
-     *
-     * @param bool $show_icons
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_status($show_icons = false)
-    {
-        $status = EEM_Status::instance()->localized_status(
-            array($this->status_ID() => esc_html__('unknown', 'event_espresso')),
-            false,
-            'sentence'
-        );
-        $icon   = '';
-        switch ($this->status_ID()) {
-            case EEM_Registration::status_id_approved:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-star-filled ee-icon-size-16 green-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_pending_payment:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-star-half ee-icon-size-16 orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_not_approved:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-marker ee-icon-size-16 orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_cancelled:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 lt-grey-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_incomplete:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 lt-orange-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_declined:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-no ee-icon-size-16 red-text"></span>'
-                    : '';
-                break;
-            case EEM_Registration::status_id_wait_list:
-                $icon = $show_icons
-                    ? '<span class="dashicons dashicons-clipboard ee-icon-size-16 purple-text"></span>'
-                    : '';
-                break;
-        }
-        return $icon . $status[$this->status_ID()];
-    }
-
-
-    /**
-     *        get Attendee Is Going
-     */
-    public function att_is_going()
-    {
-        return $this->get('REG_att_is_going');
-    }
-
-
-    /**
-     * Gets related answers
-     *
-     * @param array $query_params like EEM_Base::get_all
-     * @return EE_Answer[]
-     * @throws EE_Error
-     */
-    public function answers($query_params = null)
-    {
-        return $this->get_many_related('Answer', $query_params);
-    }
-
-
-    /**
-     * Gets the registration's answer value to the specified question
-     * (either the question's ID or a question object)
-     *
-     * @param EE_Question|int $question
-     * @param bool            $pretty_value
-     * @return array|string if pretty_value= true, the result will always be a string
-     * (because the answer might be an array of answer values, so passing pretty_value=true
-     * will convert it into some kind of string)
-     * @throws EE_Error
-     */
-    public function answer_value_to_question($question, $pretty_value = true)
-    {
-        $question_id = EEM_Question::instance()->ensure_is_ID($question);
-        return EEM_Answer::instance()->get_answer_value_to_question($this, $question_id, $pretty_value);
-    }
-
-
-    /**
-     * question_groups
-     * returns an array of EE_Question_Group objects for this registration
-     *
-     * @return EE_Question_Group[]
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function question_groups()
-    {
-        $question_groups = array();
-        if ($this->event() instanceof EE_Event) {
-            $question_groups = $this->event()->question_groups(
-                array(
-                    array(
-                        'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
-                    ),
-                    'order_by' => array('QSG_order' => 'ASC'),
-                )
-            );
-        }
-        return $question_groups;
-    }
-
-
-    /**
-     * count_question_groups
-     * returns a count of the number of EE_Question_Group objects for this registration
-     *
-     * @return int
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function count_question_groups()
-    {
-        $qg_count = 0;
-        if ($this->event() instanceof EE_Event) {
-            $qg_count = $this->event()->count_related(
-                'Question_Group',
-                array(
-                    array(
-                        'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
-                    ),
-                )
-            );
-        }
-        return $qg_count;
-    }
-
-
-    /**
-     * Returns the registration date in the 'standard' string format
-     * (function may be improved in the future to allow for different formats and timezones)
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function reg_date()
-    {
-        return $this->get_datetime('REG_date');
-    }
-
-
-    /**
-     * Gets the datetime-ticket for this registration (ie, it can be used to isolate
-     * the ticket this registration purchased, or the datetime they have registered
-     * to attend)
-     *
-     * @return EE_Datetime_Ticket
-     * @throws EE_Error
-     */
-    public function datetime_ticket()
-    {
-        return $this->get_first_related('Datetime_Ticket');
-    }
-
-
-    /**
-     * Sets the registration's datetime_ticket.
-     *
-     * @param EE_Datetime_Ticket $datetime_ticket
-     * @return EE_Datetime_Ticket
-     * @throws EE_Error
-     */
-    public function set_datetime_ticket($datetime_ticket)
-    {
-        return $this->_add_relation_to($datetime_ticket, 'Datetime_Ticket');
-    }
-
-    /**
-     * Gets deleted
-     *
-     * @return bool
-     * @throws EE_Error
-     */
-    public function deleted()
-    {
-        return $this->get('REG_deleted');
-    }
-
-    /**
-     * Sets deleted
-     *
-     * @param boolean $deleted
-     * @return bool
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_deleted($deleted)
-    {
-        if ($deleted) {
-            $this->delete();
-        } else {
-            $this->restore();
-        }
-    }
-
-
-    /**
-     * Get the status object of this object
-     *
-     * @return EE_Status
-     * @throws EE_Error
-     */
-    public function status_obj()
-    {
-        return $this->get_first_related('Status');
-    }
-
-
-    /**
-     * Returns the number of times this registration has checked into any of the datetimes
-     * its available for
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function count_checkins()
-    {
-        return $this->get_model()->count_related($this, 'Checkin');
-    }
-
-
-    /**
-     * Returns the number of current Check-ins this registration is checked into for any of the datetimes the
-     * registration is for.  Note, this is ONLY checked in (does not include checkedout)
-     *
-     * @return int
-     * @throws EE_Error
-     */
-    public function count_checkins_not_checkedout()
-    {
-        return $this->get_model()->count_related($this, 'Checkin', array(array('CHK_in' => 1)));
-    }
-
-
-    /**
-     * The purpose of this method is simply to check whether this registration can checkin to the given datetime.
-     *
-     * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
-     * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
-     *                                          consider registration status as well as datetime access.
-     * @return bool
-     * @throws EE_Error
-     */
-    public function can_checkin($DTT_OR_ID, $check_approved = true)
-    {
-        $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
-
-        //first check registration status
-        if (($check_approved && ! $this->is_approved()) || ! $DTT_ID) {
-            return false;
-        }
-        //is there a datetime ticket that matches this dtt_ID?
-        if (! (EEM_Datetime_Ticket::instance()->exists(array(
-            array(
-                'TKT_ID' => $this->get('TKT_ID'),
-                'DTT_ID' => $DTT_ID,
-            ),
-        )))
-        ) {
-            return false;
-        }
-
-        //final check is against TKT_uses
-        return $this->verify_can_checkin_against_TKT_uses($DTT_ID);
-    }
-
-
-    /**
-     * This method verifies whether the user can checkin for the given datetime considering the max uses value set on
-     * the ticket. To do this,  a query is done to get the count of the datetime records already checked into.  If the
-     * datetime given does not have a check-in record and checking in for that datetime will exceed the allowed uses,
-     * then return false.  Otherwise return true.
-     *
-     * @param int | EE_Datetime $DTT_OR_ID The datetime the registration is being checked against
-     * @return bool true means can checkin.  false means cannot checkin.
-     * @throws EE_Error
-     */
-    public function verify_can_checkin_against_TKT_uses($DTT_OR_ID)
-    {
-        $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
-
-        if (! $DTT_ID) {
-            return false;
-        }
-
-        $max_uses = $this->ticket() instanceof EE_Ticket ? $this->ticket()->uses() : EE_INF;
-
-        // if max uses is not set or equals infinity then return true cause its not a factor for whether user can
-        // check-in or not.
-        if (! $max_uses || $max_uses === EE_INF) {
-            return true;
-        }
-
-        //does this datetime have a checkin record?  If so, then the dtt count has already been verified so we can just
-        //go ahead and toggle.
-        if (EEM_Checkin::instance()->exists(array(array('REG_ID' => $this->ID(), 'DTT_ID' => $DTT_ID)))) {
-            return true;
-        }
-
-        //made it here so the last check is whether the number of checkins per unique datetime on this registration
-        //disallows further check-ins.
-        $count_unique_dtt_checkins = EEM_Checkin::instance()->count(array(
-            array(
-                'REG_ID' => $this->ID(),
-                'CHK_in' => true,
-            ),
-        ), 'DTT_ID', true);
-        // checkins have already reached their max number of uses
-        // so registrant can NOT checkin
-        if ($count_unique_dtt_checkins >= $max_uses) {
-            EE_Error::add_error(
-                esc_html__(
-                    'Check-in denied because number of datetime uses for the ticket has been reached or exceeded.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return true;
-    }
-
-
-    /**
-     * toggle Check-in status for this registration
-     * Check-ins are toggled in the following order:
-     * never checked in -> checked in
-     * checked in -> checked out
-     * checked out -> checked in
-     *
-     * @param  int $DTT_ID  include specific datetime to toggle Check-in for.
-     *                      If not included or null, then it is assumed latest datetime is being toggled.
-     * @param bool $verify  If true then can_checkin() is used to verify whether the person
-     *                      can be checked in or not.  Otherwise this forces change in checkin status.
-     * @return bool|int     the chk_in status toggled to OR false if nothing got changed.
-     * @throws EE_Error
-     */
-    public function toggle_checkin_status($DTT_ID = null, $verify = false)
-    {
-        if (empty($DTT_ID)) {
-            $datetime = $this->get_latest_related_datetime();
-            $DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
-            // verify the registration can checkin for the given DTT_ID
-        } elseif (! $this->can_checkin($DTT_ID, $verify)) {
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access',
-                        'event_espresso'
-                    ),
-                    $this->ID(),
-                    $DTT_ID
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        $status_paths = array(
-            EE_Registration::checkin_status_never => EE_Registration::checkin_status_in,
-            EE_Registration::checkin_status_in    => EE_Registration::checkin_status_out,
-            EE_Registration::checkin_status_out   => EE_Registration::checkin_status_in,
-        );
-        //start by getting the current status so we know what status we'll be changing to.
-        $cur_status = $this->check_in_status_for_datetime($DTT_ID, null);
-        $status_to  = $status_paths[$cur_status];
-        // database only records true for checked IN or false for checked OUT
-        // no record ( null ) means checked in NEVER, but we obviously don't save that
-        $new_status = $status_to === EE_Registration::checkin_status_in ? true : false;
-        // add relation - note Check-ins are always creating new rows
-        // because we are keeping track of Check-ins over time.
-        // Eventually we'll probably want to show a list table
-        // for the individual Check-ins so that they can be managed.
-        $checkin = EE_Checkin::new_instance(array(
-            'REG_ID' => $this->ID(),
-            'DTT_ID' => $DTT_ID,
-            'CHK_in' => $new_status,
-        ));
-        // if the record could not be saved then return false
-        if ($checkin->save() === 0) {
-            if (WP_DEBUG) {
-                global $wpdb;
-                $error = sprintf(
-                    esc_html__(
-                        'Registration check in update failed because of the following database error: %1$s%2$s',
-                        'event_espresso'
-                    ),
-                    '<br />',
-                    $wpdb->last_error
-                );
-            } else {
-                $error = esc_html__(
-                    'Registration check in update failed because of an unknown database error',
-                    'event_espresso'
-                );
-            }
-            EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        return $status_to;
-    }
-
-
-    /**
-     * Returns the latest datetime related to this registration (via the ticket attached to the registration).
-     * "Latest" is defined by the `DTT_EVT_start` column.
-     *
-     * @return EE_Datetime|null
-     * @throws EE_Error
-     */
-    public function get_latest_related_datetime()
-    {
-        return EEM_Datetime::instance()->get_one(
-            array(
-                array(
-                    'Ticket.Registration.REG_ID' => $this->ID(),
-                ),
-                'order_by' => array('DTT_EVT_start' => 'DESC'),
-            )
-        );
-    }
-
-
-    /**
-     * Returns the earliest datetime related to this registration (via the ticket attached to the registration).
-     * "Earliest" is defined by the `DTT_EVT_start` column.
-     *
-     * @throws EE_Error
-     */
-    public function get_earliest_related_datetime()
-    {
-        return EEM_Datetime::instance()->get_one(
-            array(
-                array(
-                    'Ticket.Registration.REG_ID' => $this->ID(),
-                ),
-                'order_by' => array('DTT_EVT_start' => 'ASC'),
-            )
-        );
-    }
-
-
-    /**
-     * This method simply returns the check-in status for this registration and the given datetime.
-     * If neither the datetime nor the checkin values are provided as arguments,
-     * then this will return the LATEST check-in status for the registration across all datetimes it belongs to.
-     *
-     * @param  int       $DTT_ID  The ID of the datetime we're checking against
-     *                            (if empty we'll get the primary datetime for
-     *                            this registration (via event) and use it's ID);
-     * @param EE_Checkin $checkin If present, we use the given checkin object rather than the dtt_id.
-     *
-     * @return int                Integer representing Check-in status.
-     * @throws EE_Error
-     */
-    public function check_in_status_for_datetime($DTT_ID = 0, $checkin = null)
-    {
-        $checkin_query_params = array(
-            'order_by' => array('CHK_timestamp' => 'DESC'),
-        );
-
-        if ($DTT_ID > 0) {
-            $checkin_query_params[0] = array('DTT_ID' => $DTT_ID);
-        }
-
-        //get checkin object (if exists)
-        $checkin = $checkin instanceof EE_Checkin
-            ? $checkin
-            : $this->get_first_related('Checkin', $checkin_query_params);
-        if ($checkin instanceof EE_Checkin) {
-            if ($checkin->get('CHK_in')) {
-                return EE_Registration::checkin_status_in; //checked in
-            }
-            return EE_Registration::checkin_status_out; //had checked in but is now checked out.
-        }
-        return EE_Registration::checkin_status_never; //never been checked in
-    }
-
-
-    /**
-     * This method returns a localized message for the toggled Check-in message.
-     *
-     * @param  int $DTT_ID include specific datetime to get the correct Check-in message.  If not included or null,
-     *                     then it is assumed Check-in for primary datetime was toggled.
-     * @param bool $error  This just flags that you want an error message returned. This is put in so that the error
-     *                     message can be customized with the attendee name.
-     * @return string internationalized message
-     * @throws EE_Error
-     */
-    public function get_checkin_msg($DTT_ID, $error = false)
-    {
-        //let's get the attendee first so we can include the name of the attendee
-        $attendee = $this->get_first_related('Attendee');
-        if ($attendee instanceof EE_Attendee) {
-            if ($error) {
-                return sprintf(__("%s's check-in status was not changed.", "event_espresso"), $attendee->full_name());
-            }
-            $cur_status = $this->check_in_status_for_datetime($DTT_ID);
-            //what is the status message going to be?
-            switch ($cur_status) {
-                case EE_Registration::checkin_status_never:
-                    return sprintf(__("%s has been removed from Check-in records", "event_espresso"),
-                        $attendee->full_name());
-                    break;
-                case EE_Registration::checkin_status_in:
-                    return sprintf(__('%s has been checked in', 'event_espresso'), $attendee->full_name());
-                    break;
-                case EE_Registration::checkin_status_out:
-                    return sprintf(__('%s has been checked out', 'event_espresso'), $attendee->full_name());
-                    break;
-            }
-        }
-        return esc_html__("The check-in status could not be determined.", "event_espresso");
-    }
-
-
-    /**
-     * Returns the related EE_Transaction to this registration
-     *
-     * @return EE_Transaction
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function transaction()
-    {
-        $transaction = $this->get_first_related('Transaction');
-        if (! $transaction instanceof \EE_Transaction) {
-            throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
-        }
-        return $transaction;
-    }
-
-
-    /**
-     *        get Registration Code
-     */
-    public function reg_code()
-    {
-        return $this->get('REG_code');
-    }
-
-
-    /**
-     *        get Transaction ID
-     */
-    public function transaction_ID()
-    {
-        return $this->get('TXN_ID');
-    }
-
-
-    /**
-     * @return int
-     * @throws EE_Error
-     */
-    public function ticket_ID()
-    {
-        return $this->get('TKT_ID');
-    }
-
-
-    /**
-     *        Set Registration Code
-     *
-     * @access    public
-     * @param    string  $REG_code Registration Code
-     * @param    boolean $use_default
-     * @throws EE_Error
-     */
-    public function set_reg_code($REG_code, $use_default = false)
-    {
-        if (empty($REG_code)) {
-            EE_Error::add_error(
-                esc_html__('REG_code can not be empty.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return;
-        }
-        if (! $this->reg_code()) {
-            parent::set('REG_code', $REG_code, $use_default);
-        } else {
-            EE_Error::doing_it_wrong(
-                __CLASS__ . '::' . __FUNCTION__,
-                esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
-                '4.6.0'
-            );
-        }
-    }
-
-
-    /**
-     * Returns all other registrations in the same group as this registrant who have the same ticket option.
-     * Note, if you want to just get all registrations in the same transaction (group), use:
-     *    $registration->transaction()->registrations();
-     *
-     * @since 4.5.0
-     * @return EE_Registration[] or empty array if this isn't a group registration.
-     * @throws EE_Error
-     */
-    public function get_all_other_registrations_in_group()
-    {
-        if ($this->group_size() < 2) {
-            return array();
-        }
-
-        $query[0] = array(
-            'TXN_ID' => $this->transaction_ID(),
-            'REG_ID' => array('!=', $this->ID()),
-            'TKT_ID' => $this->ticket_ID(),
-        );
-        /** @var EE_Registration[] $registrations */
-        $registrations = $this->get_model()->get_all($query);
-        return $registrations;
-    }
-
-    /**
-     * Return the link to the admin details for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_details_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            array(
-                'page'    => 'espresso_registrations',
-                'action'  => 'view_registration',
-                '_REG_ID' => $this->ID(),
-            ),
-            admin_url('admin.php')
-        );
-    }
-
-    /**
-     * Returns the link to the editor for the object.  Sometimes this is the same as the details.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_edit_link()
-    {
-        return $this->get_admin_details_link();
-    }
-
-    /**
-     * Returns the link to a settings page for the object.
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function get_admin_settings_link()
-    {
-        return $this->get_admin_details_link();
-    }
-
-    /**
-     * Returns the link to the "overview" for the object (typically the "list table" view).
-     *
-     * @return string
-     */
-    public function get_admin_overview_link()
-    {
-        EE_Registry::instance()->load_helper('URL');
-        return EEH_URL::add_query_args_and_nonce(
-            array(
-                'page' => 'espresso_registrations',
-            ),
-            admin_url('admin.php')
-        );
-    }
-
-
-    /**
-     * @param array $query_params
-     *
-     * @return \EE_Registration[]
-     * @throws EE_Error
-     */
-    public function payments($query_params = array())
-    {
-        return $this->get_many_related('Payment', $query_params);
-    }
-
-
-    /**
-     * @param array $query_params
-     *
-     * @return \EE_Registration_Payment[]
-     * @throws EE_Error
-     */
-    public function registration_payments($query_params = array())
-    {
-        return $this->get_many_related('Registration_Payment', $query_params);
-    }
-
-
-    /**
-     * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
-     * Note: if there are no payments on the registration there will be no payment method returned.
-     *
-     * @return EE_Payment_Method|null
-     */
-    public function payment_method()
-    {
-        return EEM_Payment_Method::instance()->get_last_used_for_registration($this);
-    }
-
-
-    /**
-     * @return \EE_Line_Item
-     * @throws EntityNotFoundException
-     * @throws EE_Error
-     */
-    public function ticket_line_item()
-    {
-        $ticket            = $this->ticket();
-        $transaction       = $this->transaction();
-        $line_item         = null;
-        $ticket_line_items = \EEH_Line_Item::get_line_items_by_object_type_and_IDs(
-            $transaction->total_line_item(),
-            'Ticket',
-            array($ticket->ID())
-        );
-        foreach ($ticket_line_items as $ticket_line_item) {
-            if (
-                $ticket_line_item instanceof \EE_Line_Item
-                && $ticket_line_item->OBJ_type() === 'Ticket'
-                && $ticket_line_item->OBJ_ID() === $ticket->ID()
-            ) {
-                $line_item = $ticket_line_item;
-                break;
-            }
-        }
-        if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
-            throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
-        }
-        return $line_item;
-    }
-
-
-    /**
-     * Soft Deletes this model object.
-     *
-     * @return boolean | int
-     * @throws RuntimeException
-     * @throws EE_Error
-     */
-    public function delete()
-    {
-        if ($this->update_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY, $this->status_ID()) === true) {
-            $this->set_status(EEM_Registration::status_id_cancelled);
-        }
-        return parent::delete();
-    }
-
-
-    /**
-     * Restores whatever the previous status was on a registration before it was trashed (if possible)
-     *
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function restore()
-    {
-        $previous_status = $this->get_extra_meta(
-            EE_Registration::PRE_TRASH_REG_STATUS_KEY,
-            true,
-            EEM_Registration::status_id_cancelled
-        );
-        if ($previous_status) {
-            $this->delete_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY);
-            $this->set_status($previous_status);
-        }
-        return parent::restore();
-    }
-
-
-    /**
-     * possibly toggle Registration status based on comparison of REG_paid vs REG_final_price
-     *
-     * @param  boolean $trigger_set_status_logic EE_Registration::set_status() can trigger additional logic
-     *                                           depending on whether the reg status changes to or from "Approved"
-     * @return boolean whether the Registration status was updated
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function updateStatusBasedOnTotalPaid($trigger_set_status_logic = true)
-    {
-        $paid = $this->paid();
-        $price = $this->final_price();
-        switch(true) {
-            // overpaid or paid
-            case EEH_Money::compare_floats($paid, $price, '>'):
-            case EEH_Money::compare_floats($paid, $price):
-                $new_status = EEM_Registration::status_id_approved;
-                break;
-            //  underpaid
-            case EEH_Money::compare_floats($paid, $price, '<'):
-                $new_status = EEM_Registration::status_id_pending_payment;
-                break;
-            // uhhh Houston...
-            default:
-                throw new RuntimeException(
-                    esc_html__('The total paid calculation for this registration is inaccurate.', 'event_espresso')
-                );
-        }
-        if ($new_status !== $this->status_ID()) {
-            if ($trigger_set_status_logic) {
-                return $this->set_status($new_status);
-            }
-            parent::set('STS_ID', $new_status);
-            return true;
-        }
-        return false;
-    }
-
-
-    /*************************** DEPRECATED ***************************/
-
-
-    /**
-     * @deprecated
-     * @since     4.7.0
-     * @access    public
-     */
-    public function price_paid()
-    {
-        EE_Error::doing_it_wrong('EE_Registration::price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::final_price() instead.', 'event_espresso'),
-            '4.7.0');
-        return $this->final_price();
-    }
-
-
-    /**
-     * @deprecated
-     * @since     4.7.0
-     * @access    public
-     * @param    float $REG_final_price
-     * @throws EE_Error
-     * @throws RuntimeException
-     */
-    public function set_price_paid($REG_final_price = 0.00)
-    {
-        EE_Error::doing_it_wrong('EE_Registration::set_price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::set_final_price() instead.', 'event_espresso'),
-            '4.7.0');
-        $this->set_final_price($REG_final_price);
-    }
-
-
-    /**
-     * @deprecated
-     * @since 4.7.0
-     * @return string
-     * @throws EE_Error
-     */
-    public function pretty_price_paid()
-    {
-        EE_Error::doing_it_wrong('EE_Registration::pretty_price_paid()',
-            esc_html__('This method is deprecated, please use EE_Registration::pretty_final_price() instead.',
-                'event_espresso'), '4.7.0');
-        return $this->pretty_final_price();
-    }
-
-
-    /**
-     * Gets the primary datetime related to this registration via the related Event to this registration
-     *
-     * @deprecated 4.9.17
-     * @return EE_Datetime
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public function get_related_primary_datetime()
-    {
-        EE_Error::doing_it_wrong(
-            __METHOD__,
-            esc_html__(
-                'Use EE_Registration::get_latest_related_datetime() or EE_Registration::get_earliest_related_datetime()',
-                'event_espresso'
-            ),
-            '4.9.17',
-            '5.0.0'
-        );
-        return $this->event()->primary_datetime();
-    }
+	/**
+	 * Used to reference when a registration has never been checked in.
+	 *
+	 * @type int
+	 */
+	const checkin_status_never = 2;
+
+	/**
+	 * Used to reference when a registration has been checked in.
+	 *
+	 * @type int
+	 */
+	const checkin_status_in = 1;
+
+
+	/**
+	 * Used to reference when a registration has been checked out.
+	 *
+	 * @type int
+	 */
+	const checkin_status_out = 0;
+
+
+	/**
+	 * extra meta key for tracking reg status os trashed registrations
+	 *
+	 * @type string
+	 */
+	const PRE_TRASH_REG_STATUS_KEY = 'pre_trash_registration_status';
+
+
+	/**
+	 * extra meta key for tracking if registration has reserved ticket
+	 *
+	 * @type string
+	 */
+	const HAS_RESERVED_TICKET_KEY = 'has_reserved_ticket';
+
+
+	/**
+	 * @param array  $props_n_values          incoming values
+	 * @param string $timezone                incoming timezone (if not set the timezone set for the website will be
+	 *                                        used.)
+	 * @param array  $date_formats            incoming date_formats in an array where the first value is the
+	 *                                        date_format and the second value is the time format
+	 * @return EE_Registration
+	 * @throws EE_Error
+	 */
+	public static function new_instance($props_n_values = array(), $timezone = null, $date_formats = array())
+	{
+		$has_object = parent::_check_for_object($props_n_values, __CLASS__, $timezone, $date_formats);
+		return $has_object ? $has_object : new self($props_n_values, false, $timezone, $date_formats);
+	}
+
+
+	/**
+	 * @param array  $props_n_values  incoming values from the database
+	 * @param string $timezone        incoming timezone as set by the model.  If not set the timezone for
+	 *                                the website will be used.
+	 * @return EE_Registration
+	 */
+	public static function new_instance_from_db($props_n_values = array(), $timezone = null)
+	{
+		return new self($props_n_values, true, $timezone);
+	}
+
+
+	/**
+	 *        Set Event ID
+	 *
+	 * @param        int $EVT_ID Event ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_event($EVT_ID = 0)
+	{
+		$this->set('EVT_ID', $EVT_ID);
+	}
+
+
+	/**
+	 * Overrides parent set() method so that all calls to set( 'REG_code', $REG_code ) OR set( 'STS_ID', $STS_ID ) can
+	 * be routed to internal methods
+	 *
+	 * @param string $field_name
+	 * @param mixed  $field_value
+	 * @param bool   $use_default
+	 *
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set($field_name, $field_value, $use_default = false)
+	{
+		switch ($field_name) {
+			case 'REG_code':
+				if (! empty($field_value) && $this->reg_code() === null) {
+					$this->set_reg_code($field_value, $use_default);
+				}
+				break;
+			case 'STS_ID':
+				$this->set_status($field_value, $use_default);
+				break;
+			default:
+				parent::set($field_name, $field_value, $use_default);
+		}
+	}
+
+
+	/**
+	 * Set Status ID
+	 * updates the registration status and ALSO...
+	 * calls reserve_registration_space() if the reg status changes TO approved from any other reg status
+	 * calls release_registration_space() if the reg status changes FROM approved to any other reg status
+	 *
+	 * @param string  $new_STS_ID
+	 * @param boolean $use_default
+	 *
+	 * @return bool
+	 * @throws RuntimeException
+	 * @throws EE_Error
+	 */
+	public function set_status($new_STS_ID = null, $use_default = false)
+	{
+		// get current REG_Status
+		$old_STS_ID = $this->status_ID();
+		// if status has changed
+		if ($old_STS_ID !== $new_STS_ID // and that status has actually changed
+			&& ! empty($old_STS_ID) // and that old status is actually set
+			&& ! empty($new_STS_ID) // as well as the new status
+			&& $this->ID() // ensure registration is in the db
+		) {
+			// TO approved
+			if ($new_STS_ID === EEM_Registration::status_id_approved) {
+				// reserve a space by incrementing ticket and datetime sold values
+				$this->_reserve_registration_space();
+				do_action('AHEE__EE_Registration__set_status__to_approved', $this, $old_STS_ID, $new_STS_ID);
+				// OR FROM  approved
+			} elseif ($old_STS_ID === EEM_Registration::status_id_approved) {
+				// release a space by decrementing ticket and datetime sold values
+				$this->_release_registration_space();
+				do_action('AHEE__EE_Registration__set_status__from_approved', $this, $old_STS_ID, $new_STS_ID);
+			}
+			// update status
+			parent::set('STS_ID', $new_STS_ID, $use_default);
+			$this->_update_if_canceled_or_declined($new_STS_ID, $old_STS_ID);
+			/** @type EE_Transaction_Payments $transaction_payments */
+			$transaction_payments = EE_Registry::instance()->load_class('Transaction_Payments');
+			$transaction_payments->recalculate_transaction_total($this->transaction(), false);
+			$this->transaction()->update_status_based_on_total_paid(true);
+			do_action('AHEE__EE_Registration__set_status__after_update', $this, $old_STS_ID, $new_STS_ID);
+			return true;
+		}
+		//even though the old value matches the new value, it's still good to
+		//allow the parent set method to have a say
+		parent::set('STS_ID', $new_STS_ID, $use_default);
+		return true;
+	}
+
+
+	/**
+	 * update REGs and TXN when cancelled or declined registrations involved
+	 *
+	 * @param string $new_STS_ID
+	 * @param string $old_STS_ID
+	 *
+	 * @throws EE_Error
+	 */
+	private function _update_if_canceled_or_declined($new_STS_ID, $old_STS_ID)
+	{
+		// these reg statuses should not be considered in any calculations involving monies owing
+		$closed_reg_statuses = EEM_Registration::closed_reg_statuses();
+		// true if registration has been cancelled or declined
+		if (in_array($new_STS_ID, $closed_reg_statuses, true)
+			&& ! in_array($old_STS_ID, $closed_reg_statuses, true)
+		) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			/** @type EE_Transaction_Processor $transaction_processor */
+			$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+			// cancelled or declined registration
+			$registration_processor->update_registration_after_being_canceled_or_declined(
+				$this,
+				$closed_reg_statuses
+			);
+			$transaction_processor->update_transaction_after_canceled_or_declined_registration(
+				$this,
+				$closed_reg_statuses,
+				false
+			);
+			do_action('AHEE__EE_Registration__set_status__canceled_or_declined', $this, $old_STS_ID, $new_STS_ID);
+			return;
+		}
+		// true if reinstating cancelled or declined registration
+		if (in_array($old_STS_ID, $closed_reg_statuses, true)
+			&& ! in_array($new_STS_ID, $closed_reg_statuses, true)
+		) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			/** @type EE_Transaction_Processor $transaction_processor */
+			$transaction_processor = EE_Registry::instance()->load_class('Transaction_Processor');
+			// reinstating cancelled or declined registration
+			$registration_processor->update_canceled_or_declined_registration_after_being_reinstated(
+				$this,
+				$closed_reg_statuses
+			);
+			$transaction_processor->update_transaction_after_reinstating_canceled_registration(
+				$this,
+				$closed_reg_statuses,
+				false
+			);
+			do_action('AHEE__EE_Registration__set_status__after_reinstated', $this, $old_STS_ID, $new_STS_ID);
+		}
+	}
+
+
+	/**
+	 *        get Status ID
+	 */
+	public function status_ID()
+	{
+		return $this->get('STS_ID');
+	}
+
+
+	/**
+	 * increments this registration's related ticket sold and corresponding datetime sold values
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	private function _reserve_registration_space()
+	{
+		// reserved ticket and datetime counts will be decremented as sold counts are incremented
+		// so stop tracking that this reg has a ticket reserved
+		$this->release_reserved_ticket();
+		$ticket = $this->ticket();
+		$ticket->increase_sold();
+		$ticket->save();
+		// possibly set event status to sold out
+		$this->event()->perform_sold_out_status_check();
+	}
+
+
+	/**
+	 * Gets the ticket this registration is for
+	 *
+	 * @param boolean $include_archived whether to include archived tickets or not.
+	 *
+	 * @return EE_Ticket|EE_Base_Class
+	 * @throws EE_Error
+	 */
+	public function ticket($include_archived = true)
+	{
+		$query_params = array();
+		if ($include_archived) {
+			$query_params['default_where_conditions'] = 'none';
+		}
+		return $this->get_first_related('Ticket', $query_params);
+	}
+
+
+	/**
+	 * Gets the event this registration is for
+	 *
+	 * @return EE_Event
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function event()
+	{
+		$event = $this->get_first_related('Event');
+		if (! $event instanceof \EE_Event) {
+			throw new EntityNotFoundException('Event ID', $this->event_ID());
+		}
+		return $event;
+	}
+
+
+	/**
+	 * Gets the "author" of the registration.  Note that for the purposes of registrations, the author will correspond
+	 * with the author of the event this registration is for.
+	 *
+	 * @since 4.5.0
+	 * @return int
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function wp_user()
+	{
+		$event = $this->event();
+		if ($event instanceof EE_Event) {
+			return $event->wp_user();
+		}
+		return 0;
+	}
+
+
+	/**
+	 * decrements (subtracts) this registration's related ticket sold and corresponding datetime sold values
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	private function _release_registration_space()
+	{
+		$ticket = $this->ticket();
+		$ticket->decrease_sold();
+		$ticket->save();
+	}
+
+
+	/**
+	 * tracks this registration's ticket reservation in extra meta
+	 * and can increment related ticket reserved and corresponding datetime reserved values
+	 *
+	 * @param bool $update_ticket if true, will increment ticket and datetime reserved count
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function reserve_ticket($update_ticket = false)
+	{
+		if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) === false) {
+			// PLZ NOTE: although checking $update_ticket first would be more efficient,
+			// we NEED to ALWAYS call update_extra_meta(), which is why that is done first
+			if ($this->update_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) && $update_ticket) {
+				$ticket = $this->ticket();
+				$ticket->increase_reserved();
+				$ticket->save();
+			}
+		}
+	}
+
+
+	/**
+	 * stops tracking this registration's ticket reservation in extra meta
+	 * decrements (subtracts) related ticket reserved and corresponding datetime reserved values
+	 *
+	 * @param bool $update_ticket if true, will decrement ticket and datetime reserved count
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function release_reserved_ticket($update_ticket = false)
+	{
+		if ($this->get_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY, true, false) !== false) {
+			// PLZ NOTE: although checking $update_ticket first would be more efficient,
+			// we NEED to ALWAYS call delete_extra_meta(), which is why that is done first
+			if ($this->delete_extra_meta(EE_Registration::HAS_RESERVED_TICKET_KEY) && $update_ticket) {
+				$ticket = $this->ticket();
+				$ticket->decrease_reserved();
+				$ticket->save();
+			}
+		}
+	}
+
+
+	/**
+	 * Set Attendee ID
+	 *
+	 * @param        int $ATT_ID Attendee ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_attendee_id($ATT_ID = 0)
+	{
+		$this->set('ATT_ID', $ATT_ID);
+	}
+
+
+	/**
+	 *        Set Transaction ID
+	 *
+	 * @param        int $TXN_ID Transaction ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_transaction_id($TXN_ID = 0)
+	{
+		$this->set('TXN_ID', $TXN_ID);
+	}
+
+
+	/**
+	 *        Set Session
+	 *
+	 * @param    string $REG_session PHP Session ID
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_session($REG_session = '')
+	{
+		$this->set('REG_session', $REG_session);
+	}
+
+
+	/**
+	 *        Set Registration URL Link
+	 *
+	 * @param    string $REG_url_link Registration URL Link
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_reg_url_link($REG_url_link = '')
+	{
+		$this->set('REG_url_link', $REG_url_link);
+	}
+
+
+	/**
+	 *        Set Attendee Counter
+	 *
+	 * @param        int $REG_count Primary Attendee
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_count($REG_count = 1)
+	{
+		$this->set('REG_count', $REG_count);
+	}
+
+
+	/**
+	 *        Set Group Size
+	 *
+	 * @param        boolean $REG_group_size Group Registration
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_group_size($REG_group_size = false)
+	{
+		$this->set('REG_group_size', $REG_group_size);
+	}
+
+
+	/**
+	 *    is_not_approved -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_not_approved
+	 *
+	 * @return        boolean
+	 */
+	public function is_not_approved()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_not_approved ? true : false;
+	}
+
+
+	/**
+	 *    is_pending_payment -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_pending_payment
+	 *
+	 * @return        boolean
+	 */
+	public function is_pending_payment()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_pending_payment ? true : false;
+	}
+
+
+	/**
+	 *    is_approved -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_approved
+	 *
+	 * @return        boolean
+	 */
+	public function is_approved()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_approved ? true : false;
+	}
+
+
+	/**
+	 *    is_cancelled -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_cancelled
+	 *
+	 * @return        boolean
+	 */
+	public function is_cancelled()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_cancelled ? true : false;
+	}
+
+
+	/**
+	 *    is_declined -  convenience method that returns TRUE if REG status ID == EEM_Registration::status_id_declined
+	 *
+	 * @return        boolean
+	 */
+	public function is_declined()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_declined ? true : false;
+	}
+
+
+	/**
+	 *    is_incomplete -  convenience method that returns TRUE if REG status ID ==
+	 *    EEM_Registration::status_id_incomplete
+	 *
+	 * @return        boolean
+	 */
+	public function is_incomplete()
+	{
+		return $this->status_ID() == EEM_Registration::status_id_incomplete ? true : false;
+	}
+
+
+	/**
+	 *        Set Registration Date
+	 *
+	 * @param        mixed ( int or string ) $REG_date Registration Date - Unix timestamp or string representation of
+	 *                                                 Date
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_reg_date($REG_date = false)
+	{
+		$this->set('REG_date', $REG_date);
+	}
+
+
+	/**
+	 *    Set final price owing for this registration after all ticket/price modifications
+	 *
+	 * @access    public
+	 * @param    float $REG_final_price
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_final_price($REG_final_price = 0.00)
+	{
+		$this->set('REG_final_price', $REG_final_price);
+	}
+
+
+	/**
+	 *    Set amount paid towards this registration's final price
+	 *
+	 * @access    public
+	 * @param    float $REG_paid
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_paid($REG_paid = 0.00)
+	{
+		$this->set('REG_paid', $REG_paid);
+	}
+
+
+	/**
+	 *        Attendee Is Going
+	 *
+	 * @param        boolean $REG_att_is_going Attendee Is Going
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_att_is_going($REG_att_is_going = false)
+	{
+		$this->set('REG_att_is_going', $REG_att_is_going);
+	}
+
+
+	/**
+	 * Gets the related attendee
+	 *
+	 * @return EE_Attendee
+	 * @throws EE_Error
+	 */
+	public function attendee()
+	{
+		return $this->get_first_related('Attendee');
+	}
+
+
+	/**
+	 *        get Event ID
+	 */
+	public function event_ID()
+	{
+		return $this->get('EVT_ID');
+	}
+
+
+	/**
+	 *        get Event ID
+	 */
+	public function event_name()
+	{
+		$event = $this->event_obj();
+		if ($event) {
+			return $event->name();
+		} else {
+			return null;
+		}
+	}
+
+
+	/**
+	 * Fetches the event this registration is for
+	 *
+	 * @return EE_Event
+	 * @throws EE_Error
+	 */
+	public function event_obj()
+	{
+		return $this->get_first_related('Event');
+	}
+
+
+	/**
+	 *        get Attendee ID
+	 */
+	public function attendee_ID()
+	{
+		return $this->get('ATT_ID');
+	}
+
+
+	/**
+	 *        get PHP Session ID
+	 */
+	public function session_ID()
+	{
+		return $this->get('REG_session');
+	}
+
+
+	/**
+	 * Gets the string which represents the URL trigger for the receipt template in the message template system.
+	 *
+	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
+	 * @return string
+	 */
+	public function receipt_url($messenger = 'html')
+	{
+
+		/**
+		 * The below will be deprecated one version after this.  We check first if there is a custom receipt template
+		 * already in use on old system.  If there is then we just return the standard url for it.
+		 *
+		 * @since 4.5.0
+		 */
+		$template_relative_path = 'modules/gateways/Invoice/lib/templates/receipt_body.template.php';
+		$has_custom             = EEH_Template::locate_template(
+			$template_relative_path,
+			array(),
+			true,
+			true,
+			true
+		);
+
+		if ($has_custom) {
+			return add_query_arg(array('receipt' => 'true'), $this->invoice_url('launch'));
+		}
+		return apply_filters('FHEE__EE_Registration__receipt_url__receipt_url', '', $this, $messenger, 'receipt');
+	}
+
+
+	/**
+	 * Gets the string which represents the URL trigger for the invoice template in the message template system.
+	 *
+	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function invoice_url($messenger = 'html')
+	{
+		/**
+		 * The below will be deprecated one version after this.  We check first if there is a custom invoice template
+		 * already in use on old system.  If there is then we just return the standard url for it.
+		 *
+		 * @since 4.5.0
+		 */
+		$template_relative_path = 'modules/gateways/Invoice/lib/templates/invoice_body.template.php';
+		$has_custom             = EEH_Template::locate_template(
+			$template_relative_path,
+			array(),
+			true,
+			true,
+			true
+		);
+
+		if ($has_custom) {
+			if ($messenger == 'html') {
+				return $this->invoice_url('launch');
+			}
+			$route = $messenger == 'download' || $messenger == 'pdf' ? 'download_invoice' : 'launch_invoice';
+
+			$query_args = array('ee' => $route, 'id' => $this->reg_url_link());
+			if ($messenger == 'html') {
+				$query_args['html'] = true;
+			}
+			return add_query_arg($query_args, get_permalink(EE_Registry::instance()->CFG->core->thank_you_page_id));
+		}
+		return apply_filters('FHEE__EE_Registration__invoice_url__invoice_url', '', $this, $messenger, 'invoice');
+	}
+
+
+	/**
+	 * get Registration URL Link
+	 *
+	 * @access public
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function reg_url_link()
+	{
+		return (string) $this->get('REG_url_link');
+	}
+
+
+	/**
+	 * Echoes out invoice_url()
+	 *
+	 * @param string $type 'download','launch', or 'html' (default is 'launch')
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function e_invoice_url($type = 'launch')
+	{
+		echo $this->invoice_url($type);
+	}
+
+
+	/**
+	 * Echoes out payment_overview_url
+	 */
+	public function e_payment_overview_url()
+	{
+		echo $this->payment_overview_url();
+	}
+
+
+	/**
+	 * Gets the URL of the thank you page with this registration REG_url_link added as
+	 * a query parameter
+	 *
+	 * @param bool $clear_session Set to true when you want to clear the session on revisiting the
+	 *                            payment overview url.
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function payment_overview_url($clear_session = false)
+	{
+		return add_query_arg(array(
+			'e_reg_url_link' => $this->reg_url_link(),
+			'step'           => 'payment_options',
+			'revisit'        => true,
+			'clear_session' => (bool) $clear_session
+		), EE_Registry::instance()->CFG->core->reg_page_url());
+	}
+
+
+	/**
+	 * Gets the URL of the thank you page with this registration REG_url_link added as
+	 * a query parameter
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function edit_attendee_information_url()
+	{
+		return add_query_arg(array(
+			'e_reg_url_link' => $this->reg_url_link(),
+			'step'           => 'attendee_information',
+			'revisit'        => true,
+		), EE_Registry::instance()->CFG->core->reg_page_url());
+	}
+
+
+	/**
+	 * Simply generates and returns the appropriate admin_url link to edit this registration
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_edit_url()
+	{
+		return EEH_URL::add_query_args_and_nonce(array(
+			'page'    => 'espresso_registrations',
+			'action'  => 'view_registration',
+			'_REG_ID' => $this->ID(),
+		), admin_url('admin.php'));
+	}
+
+
+	/**
+	 *    is_primary_registrant?
+	 */
+	public function is_primary_registrant()
+	{
+		return $this->get('REG_count') == 1 ? true : false;
+	}
+
+
+	/**
+	 * This returns the primary registration object for this registration group (which may be this object).
+	 *
+	 * @return EE_Registration
+	 * @throws EE_Error
+	 */
+	public function get_primary_registration()
+	{
+		if ($this->is_primary_registrant()) {
+			return $this;
+		}
+
+		//k reg_count !== 1 so let's get the EE_Registration object matching this txn_id and reg_count == 1
+		/** @var EE_Registration $primary_registrant */
+		$primary_registrant = EEM_Registration::instance()->get_one(array(
+			array(
+				'TXN_ID'    => $this->transaction_ID(),
+				'REG_count' => 1,
+			),
+		));
+		return $primary_registrant;
+	}
+
+
+	/**
+	 *        get  Attendee Number
+	 *
+	 * @access        public
+	 */
+	public function count()
+	{
+		return $this->get('REG_count');
+	}
+
+
+	/**
+	 *        get Group Size
+	 */
+	public function group_size()
+	{
+		return $this->get('REG_group_size');
+	}
+
+
+	/**
+	 *        get Registration Date
+	 */
+	public function date()
+	{
+		return $this->get('REG_date');
+	}
+
+
+	/**
+	 * gets a pretty date
+	 *
+	 * @param string $date_format
+	 * @param string $time_format
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_date($date_format = null, $time_format = null)
+	{
+		return $this->get_datetime('REG_date', $date_format, $time_format);
+	}
+
+
+	/**
+	 * final_price
+	 * the registration's share of the transaction total, so that the
+	 * sum of all the transaction's REG_final_prices equal the transaction's total
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function final_price()
+	{
+		return $this->get('REG_final_price');
+	}
+
+
+	/**
+	 * pretty_final_price
+	 *  final price as formatted string, with correct decimal places and currency symbol
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_final_price()
+	{
+		return $this->get_pretty('REG_final_price');
+	}
+
+
+	/**
+	 * get paid (yeah)
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function paid()
+	{
+		return $this->get('REG_paid');
+	}
+
+
+	/**
+	 * pretty_paid
+	 *
+	 * @return float
+	 * @throws EE_Error
+	 */
+	public function pretty_paid()
+	{
+		return $this->get_pretty('REG_paid');
+	}
+
+
+	/**
+	 * owes_monies_and_can_pay
+	 * whether or not this registration has monies owing and it's' status allows payment
+	 *
+	 * @param array $requires_payment
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function owes_monies_and_can_pay($requires_payment = array())
+	{
+		// these reg statuses require payment (if event is not free)
+		$requires_payment = ! empty($requires_payment)
+			? $requires_payment
+			: EEM_Registration::reg_statuses_that_allow_payment();
+		if (in_array($this->status_ID(), $requires_payment) &&
+			$this->final_price() != 0 &&
+			$this->final_price() != $this->paid()
+		) {
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+
+	/**
+	 * Prints out the return value of $this->pretty_status()
+	 *
+	 * @param bool $show_icons
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function e_pretty_status($show_icons = false)
+	{
+		echo $this->pretty_status($show_icons);
+	}
+
+
+	/**
+	 * Returns a nice version of the status for displaying to customers
+	 *
+	 * @param bool $show_icons
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_status($show_icons = false)
+	{
+		$status = EEM_Status::instance()->localized_status(
+			array($this->status_ID() => esc_html__('unknown', 'event_espresso')),
+			false,
+			'sentence'
+		);
+		$icon   = '';
+		switch ($this->status_ID()) {
+			case EEM_Registration::status_id_approved:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-star-filled ee-icon-size-16 green-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_pending_payment:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-star-half ee-icon-size-16 orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_not_approved:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-marker ee-icon-size-16 orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_cancelled:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 lt-grey-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_incomplete:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 lt-orange-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_declined:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-no ee-icon-size-16 red-text"></span>'
+					: '';
+				break;
+			case EEM_Registration::status_id_wait_list:
+				$icon = $show_icons
+					? '<span class="dashicons dashicons-clipboard ee-icon-size-16 purple-text"></span>'
+					: '';
+				break;
+		}
+		return $icon . $status[$this->status_ID()];
+	}
+
+
+	/**
+	 *        get Attendee Is Going
+	 */
+	public function att_is_going()
+	{
+		return $this->get('REG_att_is_going');
+	}
+
+
+	/**
+	 * Gets related answers
+	 *
+	 * @param array $query_params like EEM_Base::get_all
+	 * @return EE_Answer[]
+	 * @throws EE_Error
+	 */
+	public function answers($query_params = null)
+	{
+		return $this->get_many_related('Answer', $query_params);
+	}
+
+
+	/**
+	 * Gets the registration's answer value to the specified question
+	 * (either the question's ID or a question object)
+	 *
+	 * @param EE_Question|int $question
+	 * @param bool            $pretty_value
+	 * @return array|string if pretty_value= true, the result will always be a string
+	 * (because the answer might be an array of answer values, so passing pretty_value=true
+	 * will convert it into some kind of string)
+	 * @throws EE_Error
+	 */
+	public function answer_value_to_question($question, $pretty_value = true)
+	{
+		$question_id = EEM_Question::instance()->ensure_is_ID($question);
+		return EEM_Answer::instance()->get_answer_value_to_question($this, $question_id, $pretty_value);
+	}
+
+
+	/**
+	 * question_groups
+	 * returns an array of EE_Question_Group objects for this registration
+	 *
+	 * @return EE_Question_Group[]
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function question_groups()
+	{
+		$question_groups = array();
+		if ($this->event() instanceof EE_Event) {
+			$question_groups = $this->event()->question_groups(
+				array(
+					array(
+						'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
+					),
+					'order_by' => array('QSG_order' => 'ASC'),
+				)
+			);
+		}
+		return $question_groups;
+	}
+
+
+	/**
+	 * count_question_groups
+	 * returns a count of the number of EE_Question_Group objects for this registration
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function count_question_groups()
+	{
+		$qg_count = 0;
+		if ($this->event() instanceof EE_Event) {
+			$qg_count = $this->event()->count_related(
+				'Question_Group',
+				array(
+					array(
+						'Event_Question_Group.EQG_primary' => $this->count() == 1 ? true : false,
+					),
+				)
+			);
+		}
+		return $qg_count;
+	}
+
+
+	/**
+	 * Returns the registration date in the 'standard' string format
+	 * (function may be improved in the future to allow for different formats and timezones)
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function reg_date()
+	{
+		return $this->get_datetime('REG_date');
+	}
+
+
+	/**
+	 * Gets the datetime-ticket for this registration (ie, it can be used to isolate
+	 * the ticket this registration purchased, or the datetime they have registered
+	 * to attend)
+	 *
+	 * @return EE_Datetime_Ticket
+	 * @throws EE_Error
+	 */
+	public function datetime_ticket()
+	{
+		return $this->get_first_related('Datetime_Ticket');
+	}
+
+
+	/**
+	 * Sets the registration's datetime_ticket.
+	 *
+	 * @param EE_Datetime_Ticket $datetime_ticket
+	 * @return EE_Datetime_Ticket
+	 * @throws EE_Error
+	 */
+	public function set_datetime_ticket($datetime_ticket)
+	{
+		return $this->_add_relation_to($datetime_ticket, 'Datetime_Ticket');
+	}
+
+	/**
+	 * Gets deleted
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function deleted()
+	{
+		return $this->get('REG_deleted');
+	}
+
+	/**
+	 * Sets deleted
+	 *
+	 * @param boolean $deleted
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_deleted($deleted)
+	{
+		if ($deleted) {
+			$this->delete();
+		} else {
+			$this->restore();
+		}
+	}
+
+
+	/**
+	 * Get the status object of this object
+	 *
+	 * @return EE_Status
+	 * @throws EE_Error
+	 */
+	public function status_obj()
+	{
+		return $this->get_first_related('Status');
+	}
+
+
+	/**
+	 * Returns the number of times this registration has checked into any of the datetimes
+	 * its available for
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function count_checkins()
+	{
+		return $this->get_model()->count_related($this, 'Checkin');
+	}
+
+
+	/**
+	 * Returns the number of current Check-ins this registration is checked into for any of the datetimes the
+	 * registration is for.  Note, this is ONLY checked in (does not include checkedout)
+	 *
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function count_checkins_not_checkedout()
+	{
+		return $this->get_model()->count_related($this, 'Checkin', array(array('CHK_in' => 1)));
+	}
+
+
+	/**
+	 * The purpose of this method is simply to check whether this registration can checkin to the given datetime.
+	 *
+	 * @param int | EE_Datetime $DTT_OR_ID      The datetime the registration is being checked against
+	 * @param bool              $check_approved This is used to indicate whether the caller wants can_checkin to also
+	 *                                          consider registration status as well as datetime access.
+	 * @return bool
+	 * @throws EE_Error
+	 */
+	public function can_checkin($DTT_OR_ID, $check_approved = true)
+	{
+		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
+
+		//first check registration status
+		if (($check_approved && ! $this->is_approved()) || ! $DTT_ID) {
+			return false;
+		}
+		//is there a datetime ticket that matches this dtt_ID?
+		if (! (EEM_Datetime_Ticket::instance()->exists(array(
+			array(
+				'TKT_ID' => $this->get('TKT_ID'),
+				'DTT_ID' => $DTT_ID,
+			),
+		)))
+		) {
+			return false;
+		}
+
+		//final check is against TKT_uses
+		return $this->verify_can_checkin_against_TKT_uses($DTT_ID);
+	}
+
+
+	/**
+	 * This method verifies whether the user can checkin for the given datetime considering the max uses value set on
+	 * the ticket. To do this,  a query is done to get the count of the datetime records already checked into.  If the
+	 * datetime given does not have a check-in record and checking in for that datetime will exceed the allowed uses,
+	 * then return false.  Otherwise return true.
+	 *
+	 * @param int | EE_Datetime $DTT_OR_ID The datetime the registration is being checked against
+	 * @return bool true means can checkin.  false means cannot checkin.
+	 * @throws EE_Error
+	 */
+	public function verify_can_checkin_against_TKT_uses($DTT_OR_ID)
+	{
+		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
+
+		if (! $DTT_ID) {
+			return false;
+		}
+
+		$max_uses = $this->ticket() instanceof EE_Ticket ? $this->ticket()->uses() : EE_INF;
+
+		// if max uses is not set or equals infinity then return true cause its not a factor for whether user can
+		// check-in or not.
+		if (! $max_uses || $max_uses === EE_INF) {
+			return true;
+		}
+
+		//does this datetime have a checkin record?  If so, then the dtt count has already been verified so we can just
+		//go ahead and toggle.
+		if (EEM_Checkin::instance()->exists(array(array('REG_ID' => $this->ID(), 'DTT_ID' => $DTT_ID)))) {
+			return true;
+		}
+
+		//made it here so the last check is whether the number of checkins per unique datetime on this registration
+		//disallows further check-ins.
+		$count_unique_dtt_checkins = EEM_Checkin::instance()->count(array(
+			array(
+				'REG_ID' => $this->ID(),
+				'CHK_in' => true,
+			),
+		), 'DTT_ID', true);
+		// checkins have already reached their max number of uses
+		// so registrant can NOT checkin
+		if ($count_unique_dtt_checkins >= $max_uses) {
+			EE_Error::add_error(
+				esc_html__(
+					'Check-in denied because number of datetime uses for the ticket has been reached or exceeded.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return true;
+	}
+
+
+	/**
+	 * toggle Check-in status for this registration
+	 * Check-ins are toggled in the following order:
+	 * never checked in -> checked in
+	 * checked in -> checked out
+	 * checked out -> checked in
+	 *
+	 * @param  int $DTT_ID  include specific datetime to toggle Check-in for.
+	 *                      If not included or null, then it is assumed latest datetime is being toggled.
+	 * @param bool $verify  If true then can_checkin() is used to verify whether the person
+	 *                      can be checked in or not.  Otherwise this forces change in checkin status.
+	 * @return bool|int     the chk_in status toggled to OR false if nothing got changed.
+	 * @throws EE_Error
+	 */
+	public function toggle_checkin_status($DTT_ID = null, $verify = false)
+	{
+		if (empty($DTT_ID)) {
+			$datetime = $this->get_latest_related_datetime();
+			$DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
+			// verify the registration can checkin for the given DTT_ID
+		} elseif (! $this->can_checkin($DTT_ID, $verify)) {
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access',
+						'event_espresso'
+					),
+					$this->ID(),
+					$DTT_ID
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		$status_paths = array(
+			EE_Registration::checkin_status_never => EE_Registration::checkin_status_in,
+			EE_Registration::checkin_status_in    => EE_Registration::checkin_status_out,
+			EE_Registration::checkin_status_out   => EE_Registration::checkin_status_in,
+		);
+		//start by getting the current status so we know what status we'll be changing to.
+		$cur_status = $this->check_in_status_for_datetime($DTT_ID, null);
+		$status_to  = $status_paths[$cur_status];
+		// database only records true for checked IN or false for checked OUT
+		// no record ( null ) means checked in NEVER, but we obviously don't save that
+		$new_status = $status_to === EE_Registration::checkin_status_in ? true : false;
+		// add relation - note Check-ins are always creating new rows
+		// because we are keeping track of Check-ins over time.
+		// Eventually we'll probably want to show a list table
+		// for the individual Check-ins so that they can be managed.
+		$checkin = EE_Checkin::new_instance(array(
+			'REG_ID' => $this->ID(),
+			'DTT_ID' => $DTT_ID,
+			'CHK_in' => $new_status,
+		));
+		// if the record could not be saved then return false
+		if ($checkin->save() === 0) {
+			if (WP_DEBUG) {
+				global $wpdb;
+				$error = sprintf(
+					esc_html__(
+						'Registration check in update failed because of the following database error: %1$s%2$s',
+						'event_espresso'
+					),
+					'<br />',
+					$wpdb->last_error
+				);
+			} else {
+				$error = esc_html__(
+					'Registration check in update failed because of an unknown database error',
+					'event_espresso'
+				);
+			}
+			EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		return $status_to;
+	}
+
+
+	/**
+	 * Returns the latest datetime related to this registration (via the ticket attached to the registration).
+	 * "Latest" is defined by the `DTT_EVT_start` column.
+	 *
+	 * @return EE_Datetime|null
+	 * @throws EE_Error
+	 */
+	public function get_latest_related_datetime()
+	{
+		return EEM_Datetime::instance()->get_one(
+			array(
+				array(
+					'Ticket.Registration.REG_ID' => $this->ID(),
+				),
+				'order_by' => array('DTT_EVT_start' => 'DESC'),
+			)
+		);
+	}
+
+
+	/**
+	 * Returns the earliest datetime related to this registration (via the ticket attached to the registration).
+	 * "Earliest" is defined by the `DTT_EVT_start` column.
+	 *
+	 * @throws EE_Error
+	 */
+	public function get_earliest_related_datetime()
+	{
+		return EEM_Datetime::instance()->get_one(
+			array(
+				array(
+					'Ticket.Registration.REG_ID' => $this->ID(),
+				),
+				'order_by' => array('DTT_EVT_start' => 'ASC'),
+			)
+		);
+	}
+
+
+	/**
+	 * This method simply returns the check-in status for this registration and the given datetime.
+	 * If neither the datetime nor the checkin values are provided as arguments,
+	 * then this will return the LATEST check-in status for the registration across all datetimes it belongs to.
+	 *
+	 * @param  int       $DTT_ID  The ID of the datetime we're checking against
+	 *                            (if empty we'll get the primary datetime for
+	 *                            this registration (via event) and use it's ID);
+	 * @param EE_Checkin $checkin If present, we use the given checkin object rather than the dtt_id.
+	 *
+	 * @return int                Integer representing Check-in status.
+	 * @throws EE_Error
+	 */
+	public function check_in_status_for_datetime($DTT_ID = 0, $checkin = null)
+	{
+		$checkin_query_params = array(
+			'order_by' => array('CHK_timestamp' => 'DESC'),
+		);
+
+		if ($DTT_ID > 0) {
+			$checkin_query_params[0] = array('DTT_ID' => $DTT_ID);
+		}
+
+		//get checkin object (if exists)
+		$checkin = $checkin instanceof EE_Checkin
+			? $checkin
+			: $this->get_first_related('Checkin', $checkin_query_params);
+		if ($checkin instanceof EE_Checkin) {
+			if ($checkin->get('CHK_in')) {
+				return EE_Registration::checkin_status_in; //checked in
+			}
+			return EE_Registration::checkin_status_out; //had checked in but is now checked out.
+		}
+		return EE_Registration::checkin_status_never; //never been checked in
+	}
+
+
+	/**
+	 * This method returns a localized message for the toggled Check-in message.
+	 *
+	 * @param  int $DTT_ID include specific datetime to get the correct Check-in message.  If not included or null,
+	 *                     then it is assumed Check-in for primary datetime was toggled.
+	 * @param bool $error  This just flags that you want an error message returned. This is put in so that the error
+	 *                     message can be customized with the attendee name.
+	 * @return string internationalized message
+	 * @throws EE_Error
+	 */
+	public function get_checkin_msg($DTT_ID, $error = false)
+	{
+		//let's get the attendee first so we can include the name of the attendee
+		$attendee = $this->get_first_related('Attendee');
+		if ($attendee instanceof EE_Attendee) {
+			if ($error) {
+				return sprintf(__("%s's check-in status was not changed.", "event_espresso"), $attendee->full_name());
+			}
+			$cur_status = $this->check_in_status_for_datetime($DTT_ID);
+			//what is the status message going to be?
+			switch ($cur_status) {
+				case EE_Registration::checkin_status_never:
+					return sprintf(__("%s has been removed from Check-in records", "event_espresso"),
+						$attendee->full_name());
+					break;
+				case EE_Registration::checkin_status_in:
+					return sprintf(__('%s has been checked in', 'event_espresso'), $attendee->full_name());
+					break;
+				case EE_Registration::checkin_status_out:
+					return sprintf(__('%s has been checked out', 'event_espresso'), $attendee->full_name());
+					break;
+			}
+		}
+		return esc_html__("The check-in status could not be determined.", "event_espresso");
+	}
+
+
+	/**
+	 * Returns the related EE_Transaction to this registration
+	 *
+	 * @return EE_Transaction
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function transaction()
+	{
+		$transaction = $this->get_first_related('Transaction');
+		if (! $transaction instanceof \EE_Transaction) {
+			throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
+		}
+		return $transaction;
+	}
+
+
+	/**
+	 *        get Registration Code
+	 */
+	public function reg_code()
+	{
+		return $this->get('REG_code');
+	}
+
+
+	/**
+	 *        get Transaction ID
+	 */
+	public function transaction_ID()
+	{
+		return $this->get('TXN_ID');
+	}
+
+
+	/**
+	 * @return int
+	 * @throws EE_Error
+	 */
+	public function ticket_ID()
+	{
+		return $this->get('TKT_ID');
+	}
+
+
+	/**
+	 *        Set Registration Code
+	 *
+	 * @access    public
+	 * @param    string  $REG_code Registration Code
+	 * @param    boolean $use_default
+	 * @throws EE_Error
+	 */
+	public function set_reg_code($REG_code, $use_default = false)
+	{
+		if (empty($REG_code)) {
+			EE_Error::add_error(
+				esc_html__('REG_code can not be empty.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return;
+		}
+		if (! $this->reg_code()) {
+			parent::set('REG_code', $REG_code, $use_default);
+		} else {
+			EE_Error::doing_it_wrong(
+				__CLASS__ . '::' . __FUNCTION__,
+				esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
+				'4.6.0'
+			);
+		}
+	}
+
+
+	/**
+	 * Returns all other registrations in the same group as this registrant who have the same ticket option.
+	 * Note, if you want to just get all registrations in the same transaction (group), use:
+	 *    $registration->transaction()->registrations();
+	 *
+	 * @since 4.5.0
+	 * @return EE_Registration[] or empty array if this isn't a group registration.
+	 * @throws EE_Error
+	 */
+	public function get_all_other_registrations_in_group()
+	{
+		if ($this->group_size() < 2) {
+			return array();
+		}
+
+		$query[0] = array(
+			'TXN_ID' => $this->transaction_ID(),
+			'REG_ID' => array('!=', $this->ID()),
+			'TKT_ID' => $this->ticket_ID(),
+		);
+		/** @var EE_Registration[] $registrations */
+		$registrations = $this->get_model()->get_all($query);
+		return $registrations;
+	}
+
+	/**
+	 * Return the link to the admin details for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_details_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			array(
+				'page'    => 'espresso_registrations',
+				'action'  => 'view_registration',
+				'_REG_ID' => $this->ID(),
+			),
+			admin_url('admin.php')
+		);
+	}
+
+	/**
+	 * Returns the link to the editor for the object.  Sometimes this is the same as the details.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_edit_link()
+	{
+		return $this->get_admin_details_link();
+	}
+
+	/**
+	 * Returns the link to a settings page for the object.
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function get_admin_settings_link()
+	{
+		return $this->get_admin_details_link();
+	}
+
+	/**
+	 * Returns the link to the "overview" for the object (typically the "list table" view).
+	 *
+	 * @return string
+	 */
+	public function get_admin_overview_link()
+	{
+		EE_Registry::instance()->load_helper('URL');
+		return EEH_URL::add_query_args_and_nonce(
+			array(
+				'page' => 'espresso_registrations',
+			),
+			admin_url('admin.php')
+		);
+	}
+
+
+	/**
+	 * @param array $query_params
+	 *
+	 * @return \EE_Registration[]
+	 * @throws EE_Error
+	 */
+	public function payments($query_params = array())
+	{
+		return $this->get_many_related('Payment', $query_params);
+	}
+
+
+	/**
+	 * @param array $query_params
+	 *
+	 * @return \EE_Registration_Payment[]
+	 * @throws EE_Error
+	 */
+	public function registration_payments($query_params = array())
+	{
+		return $this->get_many_related('Registration_Payment', $query_params);
+	}
+
+
+	/**
+	 * This grabs the payment method corresponding to the last payment made for the amount owing on the registration.
+	 * Note: if there are no payments on the registration there will be no payment method returned.
+	 *
+	 * @return EE_Payment_Method|null
+	 */
+	public function payment_method()
+	{
+		return EEM_Payment_Method::instance()->get_last_used_for_registration($this);
+	}
+
+
+	/**
+	 * @return \EE_Line_Item
+	 * @throws EntityNotFoundException
+	 * @throws EE_Error
+	 */
+	public function ticket_line_item()
+	{
+		$ticket            = $this->ticket();
+		$transaction       = $this->transaction();
+		$line_item         = null;
+		$ticket_line_items = \EEH_Line_Item::get_line_items_by_object_type_and_IDs(
+			$transaction->total_line_item(),
+			'Ticket',
+			array($ticket->ID())
+		);
+		foreach ($ticket_line_items as $ticket_line_item) {
+			if (
+				$ticket_line_item instanceof \EE_Line_Item
+				&& $ticket_line_item->OBJ_type() === 'Ticket'
+				&& $ticket_line_item->OBJ_ID() === $ticket->ID()
+			) {
+				$line_item = $ticket_line_item;
+				break;
+			}
+		}
+		if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
+			throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
+		}
+		return $line_item;
+	}
+
+
+	/**
+	 * Soft Deletes this model object.
+	 *
+	 * @return boolean | int
+	 * @throws RuntimeException
+	 * @throws EE_Error
+	 */
+	public function delete()
+	{
+		if ($this->update_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY, $this->status_ID()) === true) {
+			$this->set_status(EEM_Registration::status_id_cancelled);
+		}
+		return parent::delete();
+	}
+
+
+	/**
+	 * Restores whatever the previous status was on a registration before it was trashed (if possible)
+	 *
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function restore()
+	{
+		$previous_status = $this->get_extra_meta(
+			EE_Registration::PRE_TRASH_REG_STATUS_KEY,
+			true,
+			EEM_Registration::status_id_cancelled
+		);
+		if ($previous_status) {
+			$this->delete_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY);
+			$this->set_status($previous_status);
+		}
+		return parent::restore();
+	}
+
+
+	/**
+	 * possibly toggle Registration status based on comparison of REG_paid vs REG_final_price
+	 *
+	 * @param  boolean $trigger_set_status_logic EE_Registration::set_status() can trigger additional logic
+	 *                                           depending on whether the reg status changes to or from "Approved"
+	 * @return boolean whether the Registration status was updated
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function updateStatusBasedOnTotalPaid($trigger_set_status_logic = true)
+	{
+		$paid = $this->paid();
+		$price = $this->final_price();
+		switch(true) {
+			// overpaid or paid
+			case EEH_Money::compare_floats($paid, $price, '>'):
+			case EEH_Money::compare_floats($paid, $price):
+				$new_status = EEM_Registration::status_id_approved;
+				break;
+			//  underpaid
+			case EEH_Money::compare_floats($paid, $price, '<'):
+				$new_status = EEM_Registration::status_id_pending_payment;
+				break;
+			// uhhh Houston...
+			default:
+				throw new RuntimeException(
+					esc_html__('The total paid calculation for this registration is inaccurate.', 'event_espresso')
+				);
+		}
+		if ($new_status !== $this->status_ID()) {
+			if ($trigger_set_status_logic) {
+				return $this->set_status($new_status);
+			}
+			parent::set('STS_ID', $new_status);
+			return true;
+		}
+		return false;
+	}
+
+
+	/*************************** DEPRECATED ***************************/
+
+
+	/**
+	 * @deprecated
+	 * @since     4.7.0
+	 * @access    public
+	 */
+	public function price_paid()
+	{
+		EE_Error::doing_it_wrong('EE_Registration::price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::final_price() instead.', 'event_espresso'),
+			'4.7.0');
+		return $this->final_price();
+	}
+
+
+	/**
+	 * @deprecated
+	 * @since     4.7.0
+	 * @access    public
+	 * @param    float $REG_final_price
+	 * @throws EE_Error
+	 * @throws RuntimeException
+	 */
+	public function set_price_paid($REG_final_price = 0.00)
+	{
+		EE_Error::doing_it_wrong('EE_Registration::set_price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::set_final_price() instead.', 'event_espresso'),
+			'4.7.0');
+		$this->set_final_price($REG_final_price);
+	}
+
+
+	/**
+	 * @deprecated
+	 * @since 4.7.0
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function pretty_price_paid()
+	{
+		EE_Error::doing_it_wrong('EE_Registration::pretty_price_paid()',
+			esc_html__('This method is deprecated, please use EE_Registration::pretty_final_price() instead.',
+				'event_espresso'), '4.7.0');
+		return $this->pretty_final_price();
+	}
+
+
+	/**
+	 * Gets the primary datetime related to this registration via the related Event to this registration
+	 *
+	 * @deprecated 4.9.17
+	 * @return EE_Datetime
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public function get_related_primary_datetime()
+	{
+		EE_Error::doing_it_wrong(
+			__METHOD__,
+			esc_html__(
+				'Use EE_Registration::get_latest_related_datetime() or EE_Registration::get_earliest_related_datetime()',
+				'event_espresso'
+			),
+			'4.9.17',
+			'5.0.0'
+		);
+		return $this->event()->primary_datetime();
+	}
 
 
 }

Spacing +13 added lines, -13 removed lines

@@ -110,7 +110,7 @@ 
     {
         switch ($field_name) {
             case 'REG_code':
-                if (! empty($field_value) && $this->reg_code() === null) {
+                if ( ! empty($field_value) && $this->reg_code() === null) {
                     $this->set_reg_code($field_value, $use_default);
                 }
                 break;
@@ -287,7 +287,7 @@ 
     public function event()
     {
         $event = $this->get_first_related('Event');
-        if (! $event instanceof \EE_Event) {
+        if ( ! $event instanceof \EE_Event) {
             throw new EntityNotFoundException('Event ID', $this->event_ID());
         }
         return $event;
@@ -978,7 +978,7 @@ 
             false,
             'sentence'
         );
-        $icon   = '';
+        $icon = '';
         switch ($this->status_ID()) {
             case EEM_Registration::status_id_approved:
                 $icon = $show_icons
@@ -1016,7 +1016,7 @@ 
                     : '';
                 break;
         }
-        return $icon . $status[$this->status_ID()];
+        return $icon.$status[$this->status_ID()];
     }
 
 
@@ -1234,7 +1234,7 @@ 
             return false;
         }
         //is there a datetime ticket that matches this dtt_ID?
-        if (! (EEM_Datetime_Ticket::instance()->exists(array(
+        if ( ! (EEM_Datetime_Ticket::instance()->exists(array(
             array(
                 'TKT_ID' => $this->get('TKT_ID'),
                 'DTT_ID' => $DTT_ID,
@@ -1263,7 +1263,7 @@ 
     {
         $DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
 
-        if (! $DTT_ID) {
+        if ( ! $DTT_ID) {
             return false;
         }
 
@@ -1271,7 +1271,7 @@ 
 
         // if max uses is not set or equals infinity then return true cause its not a factor for whether user can
         // check-in or not.
-        if (! $max_uses || $max_uses === EE_INF) {
+        if ( ! $max_uses || $max_uses === EE_INF) {
             return true;
         }
 
@@ -1327,7 +1327,7 @@ 
             $datetime = $this->get_latest_related_datetime();
             $DTT_ID   = $datetime instanceof EE_Datetime ? $datetime->ID() : 0;
             // verify the registration can checkin for the given DTT_ID
-        } elseif (! $this->can_checkin($DTT_ID, $verify)) {
+        } elseif ( ! $this->can_checkin($DTT_ID, $verify)) {
             EE_Error::add_error(
                 sprintf(
                     esc_html__(
@@ -1511,7 +1511,7 @@ 
     public function transaction()
     {
         $transaction = $this->get_first_related('Transaction');
-        if (! $transaction instanceof \EE_Transaction) {
+        if ( ! $transaction instanceof \EE_Transaction) {
             throw new EntityNotFoundException('Transaction ID', $this->transaction_ID());
         }
         return $transaction;
@@ -1565,11 +1565,11 @@ 
             );
             return;
         }
-        if (! $this->reg_code()) {
+        if ( ! $this->reg_code()) {
             parent::set('REG_code', $REG_code, $use_default);
         } else {
             EE_Error::doing_it_wrong(
-                __CLASS__ . '::' . __FUNCTION__,
+                __CLASS__.'::'.__FUNCTION__,
                 esc_html__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
                 '4.6.0'
             );
@@ -1721,7 +1721,7 @@ 
                 break;
             }
         }
-        if (! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
+        if ( ! ($line_item instanceof \EE_Line_Item && $line_item->OBJ_type() === 'Ticket')) {
             throw new EntityNotFoundException('Line Item Ticket ID', $ticket->ID());
         }
         return $line_item;
@@ -1778,7 +1778,7 @@ 
     {
         $paid = $this->paid();
         $price = $this->final_price();
-        switch(true) {
+        switch (true) {
             // overpaid or paid
             case EEH_Money::compare_floats($paid, $price, '>'):
             case EEH_Money::compare_floats($paid, $price):

modules/single_page_checkout/reg_steps/attendee_information/EE_SPCO_Reg_Step_Attendee_Information.class.php

Doc Comments +1 added lines

@@ -569,6 +569,7 @@
      * @param EE_Registration $registration
      * @param EE_Question     $question
      * @param                 mixed EE_Answer|NULL      $answer
+     * @param EE_Answer $answer
      * @return EE_Form_Input_Base
      * @throws \EE_Error
      */

Indentation +1237 added lines, -1237 removed lines

@@ -1,7 +1,7 @@ 
 <?php use EventEspresso\core\services\commands\attendee\CreateAttendeeCommand;
 
 if (! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 /**
@@ -16,1246 +16,1246 @@ 
 class EE_SPCO_Reg_Step_Attendee_Information extends EE_SPCO_Reg_Step
 {
 
-    /**
-     * @type bool $_print_copy_info
-     */
-    private $_print_copy_info = false;
-
-    /**
-     * @type array $_attendee_data
-     */
-    private $_attendee_data = array();
-
-    /**
-     * @type array $_required_questions
-     */
-    private $_required_questions = array();
-
-    /**
-     * @type array $_registration_answers
-     */
-    private $_registration_answers = array();
-
-
-    /**
-     *    class constructor
-     *
-     * @access    public
-     * @param    EE_Checkout $checkout
-     */
-    public function __construct(EE_Checkout $checkout)
-    {
-        $this->_slug     = 'attendee_information';
-        $this->_name     = __('Attendee Information', 'event_espresso');
-        $this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'attendee_info_main.template.php';
-        $this->checkout  = $checkout;
-        $this->_reset_success_message();
-        $this->set_instructions(
-            __('Please answer the following registration questions before proceeding.', 'event_espresso')
-        );
-    }
-
-
-    public function translate_js_strings()
-    {
-        EE_Registry::$i18n_js_strings['required_field']            = __(' is a required question.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['required_multi_field']      = __(
-            ' is a required question. Please enter a value for at least one of the options.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['answer_required_questions'] = __(
-            'Please answer all required questions correctly before proceeding.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['attendee_info_copied']      = sprintf(
-            __(
-                'The attendee information was successfully copied.%sPlease ensure the rest of the registration form is completed before proceeding.',
-                'event_espresso'
-            ),
-            '<br/>'
-        );
-        EE_Registry::$i18n_js_strings['attendee_info_copy_error']  = __(
-            'An unknown error occurred on the server while attempting to copy the attendee information. Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['enter_valid_email']         = __(
-            'You must enter a valid email address.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['valid_email_and_questions'] = __(
-            'You must enter a valid email address and answer all other required questions before you can proceed.',
-            'event_espresso'
-        );
-    }
-
-
-    public function enqueue_styles_and_scripts()
-    {
-
-    }
-
-
-    /**
-     * @return boolean
-     */
-    public function initialize_reg_step()
-    {
-        return true;
-    }
-
-
-    /**
-     * @return EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    public function generate_reg_form()
-    {
-        $this->_print_copy_info = false;
-        $primary_registrant     = null;
-        // autoload Line_Item_Display classes
-        EEH_Autoloader::register_line_item_display_autoloaders();
-        $Line_Item_Display = new EE_Line_Item_Display();
-        // calculate taxes
-        $Line_Item_Display->display_line_item(
-            $this->checkout->cart->get_grand_total(),
-            array('set_tax_rate' => true)
-        );
-        /** @var $subsections EE_Form_Section_Proper[] */
-        $subsections   = array(
-            'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
-        );
-        $template_args = array(
-            'revisit'       => $this->checkout->revisit,
-            'registrations' => array(),
-            'ticket_count'  => array(),
-        );
-        // grab the saved registrations from the transaction
-        $registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
-        if ($registrations) {
-            foreach ($registrations as $registration) {
-                // can this registration be processed during this visit ?
-                if (
-                    $registration instanceof EE_Registration
-                    && $this->checkout->visit_allows_processing_of_this_registration($registration)
-                ) {
-                    $subsections[$registration->reg_url_link()] = $this->_registrations_reg_form($registration);
-                    if (! $this->checkout->admin_request) {
-                        $template_args['registrations'][$registration->reg_url_link()]    = $registration;
-                        $template_args['ticket_count'][$registration->ticket()->ID()]     = isset(
-                            $template_args['ticket_count'][$registration->ticket()->ID()]
-                        )
-                            ? $template_args['ticket_count'][$registration->ticket()->ID()] + 1
-                            : 1;
-                        $ticket_line_item                                                 = EEH_Line_Item::get_line_items_by_object_type_and_IDs(
-                            $this->checkout->cart->get_grand_total(),
-                            'Ticket',
-                            array($registration->ticket()->ID())
-                        );
-                        $ticket_line_item                                                 = is_array($ticket_line_item)
-                            ? reset($ticket_line_item)
-                            : $ticket_line_item;
-                        $template_args['ticket_line_item'][$registration->ticket()->ID()] =
-                            $Line_Item_Display->display_line_item($ticket_line_item);
-                    }
-                    if ($registration->is_primary_registrant()) {
-                        $primary_registrant = $registration->reg_url_link();
-                    }
-                }
-            }
-            // print_copy_info ?
-            if ($primary_registrant && ! $this->checkout->admin_request && count($registrations) > 1) {
-                // TODO: add admin option for toggling copy attendee info, then use that value to change $this->_print_copy_info
-                $copy_options['spco_copy_attendee_chk'] = $this->_print_copy_info
-                    ? $this->_copy_attendee_info_form()
-                    : $this->_auto_copy_attendee_info();
-                // generate hidden input
-                if (
-                    isset($subsections[$primary_registrant])
-                    && $subsections[$primary_registrant] instanceof EE_Form_Section_Proper
-                ) {
-                    $subsections[$primary_registrant]->add_subsections($copy_options, 'primary_registrant', false);
-                }
-            }
-
-        }
-
-        return new EE_Form_Section_Proper(
-            array(
-                'name'            => $this->reg_form_name(),
-                'html_id'         => $this->reg_form_name(),
-                'subsections'     => $subsections,
-                'layout_strategy' => $this->checkout->admin_request ?
-                    new EE_Div_Per_Section_Layout() :
-                    new EE_Template_Layout(
-                        array(
-                            'layout_template_file' => $this->_template, // layout_template
-                            'template_args'        => $template_args,
-                        )
-                    ),
-            )
-        );
-
-    }
-
-
-    /**
-     * @param EE_Registration $registration
-     * @return EE_Form_Section_Base
-     * @throws \EE_Error
-     */
-    private function _registrations_reg_form(EE_Registration $registration)
-    {
-        static $attendee_nmbr = 1;
-        $form_args = array();
-        // verify that registration has valid event
-        if ($registration->event() instanceof EE_Event) {
-            $question_groups = $registration->event()->question_groups(
-                array(
-                    array(
-                        'Event.EVT_ID'                     => $registration->event()->ID(),
-                        'Event_Question_Group.EQG_primary' => $registration->count() === 1 ? true : false,
-                    ),
-                    'order_by' => array('QSG_order' => 'ASC'),
-                )
-            );
-            if ($question_groups) {
-                // array of params to pass to parent constructor
-                $form_args = array(
-                    'html_id'         => 'ee-registration-' . $registration->reg_url_link(),
-                    'html_class'      => 'ee-reg-form-attendee-dv',
-                    'html_style'      => $this->checkout->admin_request
-                        ? 'padding:0em 2em 1em; margin:3em 0 0; border:1px solid #ddd;'
-                        : '',
-                    'subsections'     => array(),
-                    'layout_strategy' => new EE_Fieldset_Section_Layout(
-                        array(
-                            'legend_class' => 'spco-attendee-lgnd smaller-text lt-grey-text',
-                            'legend_text'  => sprintf(__('Attendee %d', 'event_espresso'), $attendee_nmbr),
-                        )
-                    ),
-                );
-                foreach ($question_groups as $question_group) {
-                    if ($question_group instanceof EE_Question_Group) {
-                        $form_args['subsections'][$question_group->identifier()] = $this->_question_group_reg_form(
-                            $registration,
-                            $question_group
-                        );
-                    }
-                }
-                // add hidden input
-                $form_args['subsections']['additional_attendee_reg_info'] = $this->_additional_attendee_reg_info_input(
-                    $registration
-                );
-                // if we have question groups for additional attendees, then display the copy options
-                $this->_print_copy_info = $attendee_nmbr > 1 ? true : $this->_print_copy_info;
-                if ($registration->is_primary_registrant()) {
-                    // generate hidden input
-                    $form_args['subsections']['primary_registrant'] = $this->_additional_primary_registrant_inputs($registration);
-                }
-            }
-        }
-        $attendee_nmbr++;
-        return ! empty($form_args) ? new EE_Form_Section_Proper($form_args) : new EE_Form_Section_HTML();
-    }
-
-
-    /**
-     * _additional_attendee_reg_info_input
-     *
-     * @access public
-     * @param EE_Registration $registration
-     * @param bool            $additional_attendee_reg_info
-     * @return    EE_Form_Input_Base
-     * @throws \EE_Error
-     */
-    private function _additional_attendee_reg_info_input(
-        EE_Registration $registration,
-        $additional_attendee_reg_info = true
-    ) {
-        // generate hidden input
-        return new EE_Hidden_Input(
-            array(
-                'html_id' => 'additional-attendee-reg-info-' . $registration->reg_url_link(),
-                'default' => $additional_attendee_reg_info,
-            )
-        );
-    }
-
-
-    /**
-     * @param EE_Registration   $registration
-     * @param EE_Question_Group $question_group
-     * @return EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _question_group_reg_form(EE_Registration $registration, EE_Question_Group $question_group)
-    {
-        // array of params to pass to parent constructor
-        $form_args = array(
-            'html_id'         => 'ee-reg-form-qstn-grp-' . $question_group->identifier(),
-            'html_class'      => $this->checkout->admin_request
-                ? 'form-table ee-reg-form-qstn-grp-dv'
-                : 'ee-reg-form-qstn-grp-dv',
-            'html_label_id'   => 'ee-reg-form-qstn-grp-' . $question_group->identifier() . '-lbl',
-            'subsections'     => array(
-                'reg_form_qstn_grp_hdr' => $this->_question_group_header($question_group),
-            ),
-            'layout_strategy' => $this->checkout->admin_request
-                ? new EE_Admin_Two_Column_Layout()
-                : new EE_Div_Per_Section_Layout(),
-        );
-        // where params
-        $query_params = array('QST_deleted' => 0);
-        // don't load admin only questions on the frontend
-        if (! $this->checkout->admin_request) {
-            $query_params['QST_admin_only'] = array('!=', true);
-        }
-        $questions = $question_group->get_many_related(
-            'Question',
-            array(
-                $query_params,
-                'order_by' => array(
-                    'Question_Group_Question.QGQ_order' => 'ASC',
-                ),
-            )
-        );
-        // filter for additional content before questions
-        $form_args['subsections']['reg_form_questions_before'] = new EE_Form_Section_HTML(
-            apply_filters(
-                'FHEE__EEH_Form_Fields__generate_question_groups_html__before_question_group_questions',
-                '',
-                $registration,
-                $question_group,
-                $this
-            )
-        );
-        // loop thru questions
-        foreach ($questions as $question) {
-            if ($question instanceof EE_Question) {
-                $identifier                            = $question->is_system_question() ? $question->system_ID() : $question->ID();
-                $form_args['subsections'][$identifier] = $this->reg_form_question($registration, $question);
-            }
-        }
-        $form_args['subsections'] = apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information__question_group_reg_form__subsections_array',
-            $form_args['subsections'],
-            $registration,
-            $question_group,
-            $this
-        );
-        // filter for additional content after questions
-        $form_args['subsections']['reg_form_questions_after'] = new EE_Form_Section_HTML(
-            apply_filters(
-                'FHEE__EEH_Form_Fields__generate_question_groups_html__after_question_group_questions',
-                '',
-                $registration,
-                $question_group,
-                $this
-            )
-        );
+	/**
+	 * @type bool $_print_copy_info
+	 */
+	private $_print_copy_info = false;
+
+	/**
+	 * @type array $_attendee_data
+	 */
+	private $_attendee_data = array();
+
+	/**
+	 * @type array $_required_questions
+	 */
+	private $_required_questions = array();
+
+	/**
+	 * @type array $_registration_answers
+	 */
+	private $_registration_answers = array();
+
+
+	/**
+	 *    class constructor
+	 *
+	 * @access    public
+	 * @param    EE_Checkout $checkout
+	 */
+	public function __construct(EE_Checkout $checkout)
+	{
+		$this->_slug     = 'attendee_information';
+		$this->_name     = __('Attendee Information', 'event_espresso');
+		$this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'attendee_info_main.template.php';
+		$this->checkout  = $checkout;
+		$this->_reset_success_message();
+		$this->set_instructions(
+			__('Please answer the following registration questions before proceeding.', 'event_espresso')
+		);
+	}
+
+
+	public function translate_js_strings()
+	{
+		EE_Registry::$i18n_js_strings['required_field']            = __(' is a required question.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['required_multi_field']      = __(
+			' is a required question. Please enter a value for at least one of the options.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['answer_required_questions'] = __(
+			'Please answer all required questions correctly before proceeding.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['attendee_info_copied']      = sprintf(
+			__(
+				'The attendee information was successfully copied.%sPlease ensure the rest of the registration form is completed before proceeding.',
+				'event_espresso'
+			),
+			'<br/>'
+		);
+		EE_Registry::$i18n_js_strings['attendee_info_copy_error']  = __(
+			'An unknown error occurred on the server while attempting to copy the attendee information. Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['enter_valid_email']         = __(
+			'You must enter a valid email address.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['valid_email_and_questions'] = __(
+			'You must enter a valid email address and answer all other required questions before you can proceed.',
+			'event_espresso'
+		);
+	}
+
+
+	public function enqueue_styles_and_scripts()
+	{
+
+	}
+
+
+	/**
+	 * @return boolean
+	 */
+	public function initialize_reg_step()
+	{
+		return true;
+	}
+
+
+	/**
+	 * @return EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	public function generate_reg_form()
+	{
+		$this->_print_copy_info = false;
+		$primary_registrant     = null;
+		// autoload Line_Item_Display classes
+		EEH_Autoloader::register_line_item_display_autoloaders();
+		$Line_Item_Display = new EE_Line_Item_Display();
+		// calculate taxes
+		$Line_Item_Display->display_line_item(
+			$this->checkout->cart->get_grand_total(),
+			array('set_tax_rate' => true)
+		);
+		/** @var $subsections EE_Form_Section_Proper[] */
+		$subsections   = array(
+			'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
+		);
+		$template_args = array(
+			'revisit'       => $this->checkout->revisit,
+			'registrations' => array(),
+			'ticket_count'  => array(),
+		);
+		// grab the saved registrations from the transaction
+		$registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
+		if ($registrations) {
+			foreach ($registrations as $registration) {
+				// can this registration be processed during this visit ?
+				if (
+					$registration instanceof EE_Registration
+					&& $this->checkout->visit_allows_processing_of_this_registration($registration)
+				) {
+					$subsections[$registration->reg_url_link()] = $this->_registrations_reg_form($registration);
+					if (! $this->checkout->admin_request) {
+						$template_args['registrations'][$registration->reg_url_link()]    = $registration;
+						$template_args['ticket_count'][$registration->ticket()->ID()]     = isset(
+							$template_args['ticket_count'][$registration->ticket()->ID()]
+						)
+							? $template_args['ticket_count'][$registration->ticket()->ID()] + 1
+							: 1;
+						$ticket_line_item                                                 = EEH_Line_Item::get_line_items_by_object_type_and_IDs(
+							$this->checkout->cart->get_grand_total(),
+							'Ticket',
+							array($registration->ticket()->ID())
+						);
+						$ticket_line_item                                                 = is_array($ticket_line_item)
+							? reset($ticket_line_item)
+							: $ticket_line_item;
+						$template_args['ticket_line_item'][$registration->ticket()->ID()] =
+							$Line_Item_Display->display_line_item($ticket_line_item);
+					}
+					if ($registration->is_primary_registrant()) {
+						$primary_registrant = $registration->reg_url_link();
+					}
+				}
+			}
+			// print_copy_info ?
+			if ($primary_registrant && ! $this->checkout->admin_request && count($registrations) > 1) {
+				// TODO: add admin option for toggling copy attendee info, then use that value to change $this->_print_copy_info
+				$copy_options['spco_copy_attendee_chk'] = $this->_print_copy_info
+					? $this->_copy_attendee_info_form()
+					: $this->_auto_copy_attendee_info();
+				// generate hidden input
+				if (
+					isset($subsections[$primary_registrant])
+					&& $subsections[$primary_registrant] instanceof EE_Form_Section_Proper
+				) {
+					$subsections[$primary_registrant]->add_subsections($copy_options, 'primary_registrant', false);
+				}
+			}
+
+		}
+
+		return new EE_Form_Section_Proper(
+			array(
+				'name'            => $this->reg_form_name(),
+				'html_id'         => $this->reg_form_name(),
+				'subsections'     => $subsections,
+				'layout_strategy' => $this->checkout->admin_request ?
+					new EE_Div_Per_Section_Layout() :
+					new EE_Template_Layout(
+						array(
+							'layout_template_file' => $this->_template, // layout_template
+							'template_args'        => $template_args,
+						)
+					),
+			)
+		);
+
+	}
+
+
+	/**
+	 * @param EE_Registration $registration
+	 * @return EE_Form_Section_Base
+	 * @throws \EE_Error
+	 */
+	private function _registrations_reg_form(EE_Registration $registration)
+	{
+		static $attendee_nmbr = 1;
+		$form_args = array();
+		// verify that registration has valid event
+		if ($registration->event() instanceof EE_Event) {
+			$question_groups = $registration->event()->question_groups(
+				array(
+					array(
+						'Event.EVT_ID'                     => $registration->event()->ID(),
+						'Event_Question_Group.EQG_primary' => $registration->count() === 1 ? true : false,
+					),
+					'order_by' => array('QSG_order' => 'ASC'),
+				)
+			);
+			if ($question_groups) {
+				// array of params to pass to parent constructor
+				$form_args = array(
+					'html_id'         => 'ee-registration-' . $registration->reg_url_link(),
+					'html_class'      => 'ee-reg-form-attendee-dv',
+					'html_style'      => $this->checkout->admin_request
+						? 'padding:0em 2em 1em; margin:3em 0 0; border:1px solid #ddd;'
+						: '',
+					'subsections'     => array(),
+					'layout_strategy' => new EE_Fieldset_Section_Layout(
+						array(
+							'legend_class' => 'spco-attendee-lgnd smaller-text lt-grey-text',
+							'legend_text'  => sprintf(__('Attendee %d', 'event_espresso'), $attendee_nmbr),
+						)
+					),
+				);
+				foreach ($question_groups as $question_group) {
+					if ($question_group instanceof EE_Question_Group) {
+						$form_args['subsections'][$question_group->identifier()] = $this->_question_group_reg_form(
+							$registration,
+							$question_group
+						);
+					}
+				}
+				// add hidden input
+				$form_args['subsections']['additional_attendee_reg_info'] = $this->_additional_attendee_reg_info_input(
+					$registration
+				);
+				// if we have question groups for additional attendees, then display the copy options
+				$this->_print_copy_info = $attendee_nmbr > 1 ? true : $this->_print_copy_info;
+				if ($registration->is_primary_registrant()) {
+					// generate hidden input
+					$form_args['subsections']['primary_registrant'] = $this->_additional_primary_registrant_inputs($registration);
+				}
+			}
+		}
+		$attendee_nmbr++;
+		return ! empty($form_args) ? new EE_Form_Section_Proper($form_args) : new EE_Form_Section_HTML();
+	}
+
+
+	/**
+	 * _additional_attendee_reg_info_input
+	 *
+	 * @access public
+	 * @param EE_Registration $registration
+	 * @param bool            $additional_attendee_reg_info
+	 * @return    EE_Form_Input_Base
+	 * @throws \EE_Error
+	 */
+	private function _additional_attendee_reg_info_input(
+		EE_Registration $registration,
+		$additional_attendee_reg_info = true
+	) {
+		// generate hidden input
+		return new EE_Hidden_Input(
+			array(
+				'html_id' => 'additional-attendee-reg-info-' . $registration->reg_url_link(),
+				'default' => $additional_attendee_reg_info,
+			)
+		);
+	}
+
+
+	/**
+	 * @param EE_Registration   $registration
+	 * @param EE_Question_Group $question_group
+	 * @return EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _question_group_reg_form(EE_Registration $registration, EE_Question_Group $question_group)
+	{
+		// array of params to pass to parent constructor
+		$form_args = array(
+			'html_id'         => 'ee-reg-form-qstn-grp-' . $question_group->identifier(),
+			'html_class'      => $this->checkout->admin_request
+				? 'form-table ee-reg-form-qstn-grp-dv'
+				: 'ee-reg-form-qstn-grp-dv',
+			'html_label_id'   => 'ee-reg-form-qstn-grp-' . $question_group->identifier() . '-lbl',
+			'subsections'     => array(
+				'reg_form_qstn_grp_hdr' => $this->_question_group_header($question_group),
+			),
+			'layout_strategy' => $this->checkout->admin_request
+				? new EE_Admin_Two_Column_Layout()
+				: new EE_Div_Per_Section_Layout(),
+		);
+		// where params
+		$query_params = array('QST_deleted' => 0);
+		// don't load admin only questions on the frontend
+		if (! $this->checkout->admin_request) {
+			$query_params['QST_admin_only'] = array('!=', true);
+		}
+		$questions = $question_group->get_many_related(
+			'Question',
+			array(
+				$query_params,
+				'order_by' => array(
+					'Question_Group_Question.QGQ_order' => 'ASC',
+				),
+			)
+		);
+		// filter for additional content before questions
+		$form_args['subsections']['reg_form_questions_before'] = new EE_Form_Section_HTML(
+			apply_filters(
+				'FHEE__EEH_Form_Fields__generate_question_groups_html__before_question_group_questions',
+				'',
+				$registration,
+				$question_group,
+				$this
+			)
+		);
+		// loop thru questions
+		foreach ($questions as $question) {
+			if ($question instanceof EE_Question) {
+				$identifier                            = $question->is_system_question() ? $question->system_ID() : $question->ID();
+				$form_args['subsections'][$identifier] = $this->reg_form_question($registration, $question);
+			}
+		}
+		$form_args['subsections'] = apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information__question_group_reg_form__subsections_array',
+			$form_args['subsections'],
+			$registration,
+			$question_group,
+			$this
+		);
+		// filter for additional content after questions
+		$form_args['subsections']['reg_form_questions_after'] = new EE_Form_Section_HTML(
+			apply_filters(
+				'FHEE__EEH_Form_Fields__generate_question_groups_html__after_question_group_questions',
+				'',
+				$registration,
+				$question_group,
+				$this
+			)
+		);
 //		d( $form_args );
-        $question_group_reg_form = new EE_Form_Section_Proper($form_args);
-        return apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information___question_group_reg_form__question_group_reg_form',
-            $question_group_reg_form,
-            $registration,
-            $question_group,
-            $this
-        );
-    }
-
-
-    /**
-     * @access public
-     * @param EE_Question_Group $question_group
-     * @return    EE_Form_Section_HTML
-     */
-    private function _question_group_header(EE_Question_Group $question_group)
-    {
-        $html = '';
-        // group_name
-        if ($question_group->show_group_name() && $question_group->name() !== '') {
-            if ($this->checkout->admin_request) {
-                $html .= EEH_HTML::br();
-                $html .= EEH_HTML::h3(
-                    $question_group->name(),
-                    '', 'ee-reg-form-qstn-grp-title title', 'font-size: 1.3em; padding-left:0;'
-                );
-            } else {
-                $html .= EEH_HTML::h4(
-                    $question_group->name(),
-                    '', 'ee-reg-form-qstn-grp-title section-title'
-                );
-            }
-        }
-        // group_desc
-        if ($question_group->show_group_desc() && $question_group->desc() !== '') {
-            $html .= EEH_HTML::p(
-                $question_group->desc(),
-                '',
-                $this->checkout->admin_request
-                    ? 'ee-reg-form-qstn-grp-desc-pg'
-                    : 'ee-reg-form-qstn-grp-desc-pg small-text lt-grey-text'
-            );
-
-        }
-        return new EE_Form_Section_HTML($html);
-    }
-
-
-    /**
-     * @access public
-     * @return    EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _copy_attendee_info_form()
-    {
-        // array of params to pass to parent constructor
-        return new EE_Form_Section_Proper(
-            array(
-                'subsections'     => $this->_copy_attendee_info_inputs(),
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file'     => SPCO_REG_STEPS_PATH . $this->_slug . DS . 'copy_attendee_info.template.php',
-                        'begin_template_file'      => null,
-                        'input_template_file'      => null,
-                        'subsection_template_file' => null,
-                        'end_template_file'        => null,
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _auto_copy_attendee_info
-     *
-     * @access public
-     * @return EE_Form_Section_HTML
-     */
-    private function _auto_copy_attendee_info()
-    {
-        return new EE_Form_Section_HTML(
-            EEH_Template::locate_template(
-                SPCO_REG_STEPS_PATH . $this->_slug . DS . '_auto_copy_attendee_info.template.php',
-                apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Attendee_Information__auto_copy_attendee_info__template_args',
-                    array()
-                ),
-                true,
-                true
-            )
-        );
-    }
-
-
-    /**
-     * _copy_attendee_info_inputs
-     *
-     * @access public
-     * @return array
-     * @throws \EE_Error
-     */
-    private function _copy_attendee_info_inputs()
-    {
-        $copy_attendee_info_inputs = array();
-        $prev_ticket               = null;
-        // grab the saved registrations from the transaction
-        $registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
-        foreach ($registrations as $registration) {
-            // for all  attendees other than the primary attendee
-            if ($registration instanceof EE_Registration && ! $registration->is_primary_registrant()) {
-                // if this is a new ticket OR if this is the very first additional attendee after the primary attendee
-                if ($registration->ticket()->ID() !== $prev_ticket) {
-                    $item_name                                                                                         = $registration->ticket()->name();
-                    $item_name                                                                                         .= $registration->ticket()->description() !== ''
-                        ? ' - ' . $registration->ticket()->description()
-                        : '';
-                    $copy_attendee_info_inputs['spco_copy_attendee_chk[ticket-' . $registration->ticket()->ID() . ']'] = new EE_Form_Section_HTML(
-                        '<h6 class="spco-copy-attendee-event-hdr">' . $item_name . '</h6>'
-                    );
-                    $prev_ticket                                                                                       = $registration->ticket()->ID();
-                }
-
-                $copy_attendee_info_inputs['spco_copy_attendee_chk[' . $registration->ID() . ']'] = new
-                EE_Checkbox_Multi_Input(
-                    array(
-                        $registration->ID() => sprintf(
-                            __('Attendee #%s', 'event_espresso'),
-                            $registration->count()
-                        ),
-                    ),
-                    array(
-                        'html_id'                 => 'spco-copy-attendee-chk-' . $registration->reg_url_link(),
-                        'html_class'              => 'spco-copy-attendee-chk ee-do-not-validate',
-                        'display_html_label_text' => false,
-                    )
-                );
-            }
-        }
-        return $copy_attendee_info_inputs;
-    }
-
-
-    /**
-     * _additional_primary_registrant_inputs
-     *
-     * @access public
-     * @param EE_Registration $registration
-     * @return    EE_Form_Input_Base
-     * @throws \EE_Error
-     */
-    private function _additional_primary_registrant_inputs(EE_Registration $registration)
-    {
-        // generate hidden input
-        return new EE_Hidden_Input(
-            array(
-                'html_id' => 'primary_registrant',
-                'default' => $registration->reg_url_link(),
-            )
-        );
-    }
-
-
-    /**
-     * @access public
-     * @param EE_Registration $registration
-     * @param EE_Question     $question
-     * @return    EE_Form_Input_Base
-     * @throws \EE_Error
-     */
-    public function reg_form_question(EE_Registration $registration, EE_Question $question)
-    {
-
-        // if this question was for an attendee detail, then check for that answer
-        $answer_value = EEM_Answer::instance()->get_attendee_property_answer_value(
-            $registration,
-            $question->system_ID()
-        );
-        $answer       = $answer_value === null
-            ? EEM_Answer::instance()->get_one(
-                array(array('QST_ID' => $question->ID(), 'REG_ID' => $registration->ID()))
-            )
-            : null;
-        // if NOT returning to edit an existing registration
-        // OR if this question is for an attendee property
-        // OR we still don't have an EE_Answer object
-        if ($answer_value || ! $answer instanceof EE_Answer || ! $registration->reg_url_link()) {
-            // create an EE_Answer object for storing everything in
-            $answer = EE_Answer::new_instance(array(
-                'QST_ID' => $question->ID(),
-                'REG_ID' => $registration->ID(),
-            ));
-        }
-        // verify instance
-        if ($answer instanceof EE_Answer) {
-            if (! empty($answer_value)) {
-                $answer->set('ANS_value', $answer_value);
-            }
-            $answer->cache('Question', $question);
-            //remember system ID had a bug where sometimes it could be null
-            $answer_cache_id = $question->is_system_question()
-                ? $question->system_ID() . '-' . $registration->reg_url_link()
-                : $question->ID() . '-' . $registration->reg_url_link();
-            $registration->cache('Answer', $answer, $answer_cache_id);
-        }
-        return $this->_generate_question_input($registration, $question, $answer);
-
-    }
-
-
-    /**
-     * @param EE_Registration $registration
-     * @param EE_Question     $question
-     * @param                 mixed EE_Answer|NULL      $answer
-     * @return EE_Form_Input_Base
-     * @throws \EE_Error
-     */
-    private function _generate_question_input(EE_Registration $registration, EE_Question $question, $answer)
-    {
-        $identifier                             = $question->is_system_question() ? $question->system_ID() : $question->ID();
-        $this->_required_questions[$identifier] = $question->required() ? true : false;
-        add_filter(
-            'FHEE__EE_Question__generate_form_input__country_options',
-            array($this, 'use_cached_countries_for_form_input'),
-            10,
-            4
-        );
-        add_filter(
-            'FHEE__EE_Question__generate_form_input__state_options',
-            array($this, 'use_cached_states_for_form_input'),
-            10,
-            4
-        );
-        $input_constructor_args                  = array(
-            'html_name'        => 'ee_reg_qstn[' . $registration->ID() . '][' . $identifier . ']',
-            'html_id'          => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
-            'html_class'       => 'ee-reg-qstn ee-reg-qstn-' . $identifier,
-            'html_label_id'    => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
-            'html_label_class' => 'ee-reg-qstn',
-        );
-        $input_constructor_args['html_label_id'] .= '-lbl';
-        if ($answer instanceof EE_Answer && $answer->ID()) {
-            $input_constructor_args['html_name']     .= '[' . $answer->ID() . ']';
-            $input_constructor_args['html_id']       .= '-' . $answer->ID();
-            $input_constructor_args['html_label_id'] .= '-' . $answer->ID();
-        }
-        $form_input = $question->generate_form_input(
-            $registration,
-            $answer,
-            $input_constructor_args
-        );
-        remove_filter(
-            'FHEE__EE_Question__generate_form_input__country_options',
-            array($this, 'use_cached_countries_for_form_input')
-        );
-        remove_filter(
-            'FHEE__EE_Question__generate_form_input__state_options',
-            array($this, 'use_cached_states_for_form_input')
-        );
-        return $form_input;
-    }
-
-
-    /**
-     * Gets the list of countries for the form input
-     *
-     * @param array|null       $countries_list
-     * @param \EE_Question     $question
-     * @param \EE_Registration $registration
-     * @param \EE_Answer       $answer
-     * @return array 2d keys are country IDs, values are their names
-     */
-    public function use_cached_countries_for_form_input(
-        $countries_list,
-        \EE_Question $question = null,
-        \EE_Registration $registration = null,
-        \EE_Answer $answer = null
-    ) {
-        $country_options = array('' => '');
-        // get possibly cached list of countries
-        $countries = $this->checkout->action === 'process_reg_step'
-            ? EEM_Country::instance()->get_all_countries()
-            : EEM_Country::instance()->get_all_active_countries();
-        if (! empty($countries)) {
-            foreach ($countries as $country) {
-                if ($country instanceof EE_Country) {
-                    $country_options[$country->ID()] = $country->name();
-                }
-            }
-        }
-        if ($question instanceof EE_Question
-            && $registration instanceof EE_Registration) {
-            $answer = EEM_Answer::instance()->get_one(
-                array(array('QST_ID' => $question->ID(), 'REG_ID' => $registration->ID()))
-            );
-        } else {
-            $answer = EE_Answer::new_instance();
-        }
-        $country_options = apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information___generate_question_input__country_options',
-            $country_options,
-            $this,
-            $registration,
-            $question,
-            $answer
-        );
-        return $country_options;
-    }
-
-
-    /**
-     * Gets the list of states for the form input
-     *
-     * @param array|null       $states_list
-     * @param \EE_Question     $question
-     * @param \EE_Registration $registration
-     * @param \EE_Answer       $answer
-     * @return array 2d keys are state IDs, values are their names
-     */
-    public function use_cached_states_for_form_input(
-        $states_list,
-        \EE_Question $question = null,
-        \EE_Registration $registration = null,
-        \EE_Answer $answer = null
-    ) {
-        $state_options = array('' => array('' => ''));
-        $states        = $this->checkout->action === 'process_reg_step'
-            ? EEM_State::instance()->get_all_states()
-            : EEM_State::instance()->get_all_active_states();
-        if (! empty($states)) {
-            foreach ($states as $state) {
-                if ($state instanceof EE_State) {
-                    $state_options[$state->country()->name()][$state->ID()] = $state->name();
-                }
-            }
-        }
-        $state_options = apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information___generate_question_input__state_options',
-            $state_options,
-            $this,
-            $registration,
-            $question,
-            $answer
-        );
-        return $state_options;
-    }
-
-
-
-
-
-
-    /********************************************************************************************************/
-    /****************************************  PROCESS REG STEP  ****************************************/
-    /********************************************************************************************************/
-    /**
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function process_reg_step()
-    {
-        do_action('AHEE_log', __FILE__, __FUNCTION__, '');
-        // grab validated data from form
-        $valid_data = $this->checkout->current_step->valid_data();
-        // EEH_Debug_Tools::printr( $_REQUEST, '$_REQUEST', __FILE__, __LINE__ );
-        // EEH_Debug_Tools::printr( $valid_data, '$valid_data', __FILE__, __LINE__ );
-        // if we don't have any $valid_data then something went TERRIBLY WRONG !!!
-        if (empty($valid_data)) {
-            EE_Error::add_error(
-                __('No valid question responses were received.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        if (! $this->checkout->transaction instanceof EE_Transaction || ! $this->checkout->continue_reg) {
-            EE_Error::add_error(
-                __('A valid transaction could not be initiated for processing your registrations.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // get cached registrations
-        $registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
-        // verify we got the goods
-        if (empty($registrations)) {
-            EE_Error::add_error(
-                __('Your form data could not be applied to any valid registrations.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // extract attendee info from form data and save to model objects
-        $registrations_processed = $this->_process_registrations($registrations, $valid_data);
-        // if first pass thru SPCO,
-        // then let's check processed registrations against the total number of tickets in the cart
-        if ($registrations_processed === false) {
-            // but return immediately if the previous step exited early due to errors
-            return false;
-        } else if (! $this->checkout->revisit && $registrations_processed !== $this->checkout->total_ticket_count) {
-            // generate a correctly translated string for all possible singular/plural combinations
-            if ($this->checkout->total_ticket_count === 1 && $registrations_processed !== 1) {
-                $error_msg = sprintf(
-                    __(
-                        'There was %1$d ticket in the Event Queue, but %2$ds registrations were processed',
-                        'event_espresso'
-                    ),
-                    $this->checkout->total_ticket_count,
-                    $registrations_processed
-                );
-            } else if ($this->checkout->total_ticket_count !== 1 && $registrations_processed === 1) {
-                $error_msg = sprintf(
-                    __(
-                        'There was a total of %1$d tickets in the Event Queue, but only %2$ds registration was processed',
-                        'event_espresso'
-                    ),
-                    $this->checkout->total_ticket_count,
-                    $registrations_processed
-                );
-            } else {
-                $error_msg = sprintf(
-                    __(
-                        'There was a total of %1$d tickets in the Event Queue, but %2$ds registrations were processed',
-                        'event_espresso'
-                    ),
-                    $this->checkout->total_ticket_count,
-                    $registrations_processed
-                );
-            }
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        // mark this reg step as completed
-        $this->set_completed();
-        $this->_set_success_message(
-            __('The Attendee Information Step has been successfully completed.', 'event_espresso')
-        );
-        //do action in case a plugin wants to do something with the data submitted in step 1.
-        //passes EE_Single_Page_Checkout, and it's posted data
-        do_action('AHEE__EE_Single_Page_Checkout__process_attendee_information__end', $this, $valid_data);
-        return true;
-    }
-
-
-    /**
-     *    _process_registrations
-     *
-     * @param EE_Registration[] $registrations
-     * @param array             $valid_data
-     * @return boolean | int
-     * @throws \EE_Error
-     */
-    private function _process_registrations($registrations = array(), $valid_data = array())
-    {
-        // load resources and set some defaults
-        EE_Registry::instance()->load_model('Attendee');
-        // holder for primary registrant attendee object
-        $this->checkout->primary_attendee_obj = null;
-        // array for tracking reg form data for the primary registrant
-        $primary_registrant = array(
-            'line_item_id' => null,
-        );
-        $copy_primary       = false;
-        // reg form sections that do not contain inputs
-        $non_input_form_sections = array(
-            'primary_registrant',
-            'additional_attendee_reg_info',
-            'spco_copy_attendee_chk',
-        );
-        // attendee counter
-        $att_nmbr = 0;
-        // grab the saved registrations from the transaction
-        foreach ($registrations as $registration) {
-            // verify EE_Registration object
-            if (! $registration instanceof EE_Registration) {
-                EE_Error::add_error(
-                    __(
-                        'An invalid Registration object was discovered when attempting to process your registration information.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-            /** @var string $reg_url_link */
-            $reg_url_link = $registration->reg_url_link();
-            // reg_url_link exists ?
-            if (! empty($reg_url_link)) {
-                // should this registration be processed during this visit ?
-                if ($this->checkout->visit_allows_processing_of_this_registration($registration)) {
-                    // if NOT revisiting, then let's save the registration now,
-                    // so that we have a REG_ID to use when generating other objects
-                    if (! $this->checkout->revisit) {
-                        $registration->save();
-                    }
-                    /**
-                     * This allows plugins to trigger a fail on processing of a
-                     * registration for any conditions they may have for it to pass.
-                     *
-                     * @var bool   if true is returned by the plugin then the
-                     *            registration processing is halted.
-                     */
-                    if (apply_filters(
-                        'FHEE__EE_SPCO_Reg_Step_Attendee_Information___process_registrations__pre_registration_process',
-                        false,
-                        $att_nmbr,
-                        $registration,
-                        $registrations,
-                        $valid_data,
-                        $this
-                    )) {
-                        return false;
-                    }
-
-                    // Houston, we have a registration!
-                    $att_nmbr++;
-                    $this->_attendee_data[$reg_url_link] = array();
-                    // grab any existing related answer objects
-                    $this->_registration_answers = $registration->answers();
-                    // unset( $valid_data[ $reg_url_link ]['additional_attendee_reg_info'] );
-                    if (isset($valid_data[$reg_url_link])) {
-                        // do we need to copy basic info from primary attendee ?
-                        $copy_primary = isset($valid_data[$reg_url_link]['additional_attendee_reg_info'])
-                                        && absint($valid_data[$reg_url_link]['additional_attendee_reg_info']) === 0
-                            ? true
-                            : false;
-                        // filter form input data for this registration
-                        $valid_data[$reg_url_link] = (array)apply_filters(
-                            'FHEE__EE_Single_Page_Checkout__process_attendee_information__valid_data_line_item',
-                            $valid_data[$reg_url_link]
-                        );
-                        // EEH_Debug_Tools::printr( $valid_data[ $reg_url_link ], '$valid_data[ $reg_url_link ]', __FILE__, __LINE__ );
-                        if (isset($valid_data['primary_attendee'])) {
-                            $primary_registrant['line_item_id'] = ! empty($valid_data['primary_attendee'])
-                                ? $valid_data['primary_attendee']
-                                : false;
-                            unset($valid_data['primary_attendee']);
-                        }
-                        // now loop through our array of valid post data && process attendee reg forms
-                        foreach ($valid_data[$reg_url_link] as $form_section => $form_inputs) {
-                            if (! in_array($form_section, $non_input_form_sections)) {
-                                foreach ($form_inputs as $form_input => $input_value) {
-                                    // \EEH_Debug_Tools::printr( $input_value, $form_input, __FILE__, __LINE__ );
-                                    // check for critical inputs
-                                    if (
-                                    ! $this->_verify_critical_attendee_details_are_set_and_validate_email(
-                                        $form_input,
-                                        $input_value
-                                    )
-                                    ) {
-                                        return false;
-                                    }
-                                    // store a bit of data about the primary attendee
-                                    if (
-                                        $att_nmbr === 1
-                                        && ! empty($input_value)
-                                        && $reg_url_link === $primary_registrant['line_item_id']
-                                    ) {
-                                        $primary_registrant[$form_input] = $input_value;
-                                    } else if (
-                                        $copy_primary
-                                        && $input_value === null
-                                        && isset($primary_registrant[$form_input])
-                                    ) {
-                                        $input_value = $primary_registrant[$form_input];
-                                    }
-                                    // now attempt to save the input data
-                                    if (
-                                    ! $this->_save_registration_form_input(
-                                        $registration,
-                                        $form_input,
-                                        $input_value
-                                    )
-                                    ) {
-                                        EE_Error::add_error(
-                                            sprintf(
-                                                __(
-                                                    'Unable to save registration form data for the form input: "%1$s" with the submitted value: "%2$s"',
-                                                    'event_espresso'
-                                                ),
-                                                $form_input,
-                                                $input_value
-                                            ),
-                                            __FILE__,
-                                            __FUNCTION__,
-                                            __LINE__
-                                        );
-                                        return false;
-                                    }
-                                }
-                            }
-                        }  // end of foreach ( $valid_data[ $reg_url_link ] as $form_section => $form_inputs )
-                    }
-                    //EEH_Debug_Tools::printr( $this->_attendee_data, '$this->_attendee_data', __FILE__, __LINE__ );
-                    // this registration does not require additional attendee information ?
-                    if (
-                        $copy_primary
-                        && $att_nmbr > 1
-                        && $this->checkout->primary_attendee_obj instanceof EE_Attendee
-                    ) {
-                        // just copy the primary registrant
-                        $attendee = $this->checkout->primary_attendee_obj;
-                    } else {
-                        // ensure critical details are set for additional attendees
-                        $this->_attendee_data[$reg_url_link] = $att_nmbr > 1
-                            ? $this->_copy_critical_attendee_details_from_primary_registrant(
-                                $this->_attendee_data[$reg_url_link]
-                            )
-                            : $this->_attendee_data[$reg_url_link];
-                        // execute create attendee command (which may return an existing attendee)
-                        $attendee = EE_Registry::instance()->BUS->execute(
-                            new CreateAttendeeCommand(
-                                $this->_attendee_data[$reg_url_link],
-                                $registration
-                            )
-                        );
-                        // who's #1 ?
-                        if ($att_nmbr === 1) {
-                            $this->checkout->primary_attendee_obj = $attendee;
-                        }
-                    }
-                    // EEH_Debug_Tools::printr( $attendee, '$attendee', __FILE__, __LINE__ );
-                    // add relation to registration, set attendee ID, and cache attendee
-                    $this->_associate_attendee_with_registration($registration, $attendee);
-                    // \EEH_Debug_Tools::printr( $registration, '$registration', __FILE__, __LINE__ );
-                    if (! $registration->attendee() instanceof EE_Attendee) {
-                        EE_Error::add_error(sprintf(__('Registration %s has an invalid or missing Attendee object.',
-                            'event_espresso'), $reg_url_link), __FILE__, __FUNCTION__, __LINE__);
-                        return false;
-                    }
-                    /** @type EE_Registration_Processor $registration_processor */
-                    $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-                    // at this point, we should have enough details about the registrant to consider the registration NOT incomplete
-                    $registration_processor->toggle_incomplete_registration_status_to_default($registration, false);
-                    // we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
-                    $this->checkout->transaction->toggle_failed_transaction_status();
-                    // if we've gotten this far, then let's save what we have
-                    $registration->save();
-                    // add relation between TXN and registration
-                    $this->_associate_registration_with_transaction($registration);
-                } // end of if ( ! $this->checkout->revisit || $this->checkout->primary_revisit || ( $this->checkout->revisit && $this->checkout->reg_url_link == $reg_url_link )) {
-
-            } else {
-                EE_Error::add_error(__('An invalid or missing line item ID was encountered while attempting to process the registration form.',
-                    'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-                // remove malformed data
-                unset($valid_data[$reg_url_link]);
-                return false;
-            }
-
-        } // end of foreach ( $this->checkout->transaction->registrations()  as $registration )
-        return $att_nmbr;
-    }
-
-
-    /**
-     *    _save_registration_form_input
-     *
-     * @param EE_Registration $registration
-     * @param string          $form_input
-     * @param string          $input_value
-     * @return boolean
-     * @throws \EE_Error
-     */
-    private function _save_registration_form_input(
-        EE_Registration $registration,
-        $form_input = '',
-        $input_value = ''
-    ) {
-        // \EEH_Debug_Tools::printr( __FUNCTION__, __CLASS__, __FILE__, __LINE__, 2 );
-        // \EEH_Debug_Tools::printr( $form_input, '$form_input', __FILE__, __LINE__ );
-        // \EEH_Debug_Tools::printr( $input_value, '$input_value', __FILE__, __LINE__ );
-        // allow for plugins to hook in and do their own processing of the form input.
-        // For plugins to bypass normal processing here, they just need to return a boolean value.
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information___save_registration_form_input',
-            false,
-            $registration,
-            $form_input,
-            $input_value,
-            $this
-        )) {
-            return true;
-        }
-        /*
+		$question_group_reg_form = new EE_Form_Section_Proper($form_args);
+		return apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information___question_group_reg_form__question_group_reg_form',
+			$question_group_reg_form,
+			$registration,
+			$question_group,
+			$this
+		);
+	}
+
+
+	/**
+	 * @access public
+	 * @param EE_Question_Group $question_group
+	 * @return    EE_Form_Section_HTML
+	 */
+	private function _question_group_header(EE_Question_Group $question_group)
+	{
+		$html = '';
+		// group_name
+		if ($question_group->show_group_name() && $question_group->name() !== '') {
+			if ($this->checkout->admin_request) {
+				$html .= EEH_HTML::br();
+				$html .= EEH_HTML::h3(
+					$question_group->name(),
+					'', 'ee-reg-form-qstn-grp-title title', 'font-size: 1.3em; padding-left:0;'
+				);
+			} else {
+				$html .= EEH_HTML::h4(
+					$question_group->name(),
+					'', 'ee-reg-form-qstn-grp-title section-title'
+				);
+			}
+		}
+		// group_desc
+		if ($question_group->show_group_desc() && $question_group->desc() !== '') {
+			$html .= EEH_HTML::p(
+				$question_group->desc(),
+				'',
+				$this->checkout->admin_request
+					? 'ee-reg-form-qstn-grp-desc-pg'
+					: 'ee-reg-form-qstn-grp-desc-pg small-text lt-grey-text'
+			);
+
+		}
+		return new EE_Form_Section_HTML($html);
+	}
+
+
+	/**
+	 * @access public
+	 * @return    EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _copy_attendee_info_form()
+	{
+		// array of params to pass to parent constructor
+		return new EE_Form_Section_Proper(
+			array(
+				'subsections'     => $this->_copy_attendee_info_inputs(),
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file'     => SPCO_REG_STEPS_PATH . $this->_slug . DS . 'copy_attendee_info.template.php',
+						'begin_template_file'      => null,
+						'input_template_file'      => null,
+						'subsection_template_file' => null,
+						'end_template_file'        => null,
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _auto_copy_attendee_info
+	 *
+	 * @access public
+	 * @return EE_Form_Section_HTML
+	 */
+	private function _auto_copy_attendee_info()
+	{
+		return new EE_Form_Section_HTML(
+			EEH_Template::locate_template(
+				SPCO_REG_STEPS_PATH . $this->_slug . DS . '_auto_copy_attendee_info.template.php',
+				apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Attendee_Information__auto_copy_attendee_info__template_args',
+					array()
+				),
+				true,
+				true
+			)
+		);
+	}
+
+
+	/**
+	 * _copy_attendee_info_inputs
+	 *
+	 * @access public
+	 * @return array
+	 * @throws \EE_Error
+	 */
+	private function _copy_attendee_info_inputs()
+	{
+		$copy_attendee_info_inputs = array();
+		$prev_ticket               = null;
+		// grab the saved registrations from the transaction
+		$registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
+		foreach ($registrations as $registration) {
+			// for all  attendees other than the primary attendee
+			if ($registration instanceof EE_Registration && ! $registration->is_primary_registrant()) {
+				// if this is a new ticket OR if this is the very first additional attendee after the primary attendee
+				if ($registration->ticket()->ID() !== $prev_ticket) {
+					$item_name                                                                                         = $registration->ticket()->name();
+					$item_name                                                                                         .= $registration->ticket()->description() !== ''
+						? ' - ' . $registration->ticket()->description()
+						: '';
+					$copy_attendee_info_inputs['spco_copy_attendee_chk[ticket-' . $registration->ticket()->ID() . ']'] = new EE_Form_Section_HTML(
+						'<h6 class="spco-copy-attendee-event-hdr">' . $item_name . '</h6>'
+					);
+					$prev_ticket                                                                                       = $registration->ticket()->ID();
+				}
+
+				$copy_attendee_info_inputs['spco_copy_attendee_chk[' . $registration->ID() . ']'] = new
+				EE_Checkbox_Multi_Input(
+					array(
+						$registration->ID() => sprintf(
+							__('Attendee #%s', 'event_espresso'),
+							$registration->count()
+						),
+					),
+					array(
+						'html_id'                 => 'spco-copy-attendee-chk-' . $registration->reg_url_link(),
+						'html_class'              => 'spco-copy-attendee-chk ee-do-not-validate',
+						'display_html_label_text' => false,
+					)
+				);
+			}
+		}
+		return $copy_attendee_info_inputs;
+	}
+
+
+	/**
+	 * _additional_primary_registrant_inputs
+	 *
+	 * @access public
+	 * @param EE_Registration $registration
+	 * @return    EE_Form_Input_Base
+	 * @throws \EE_Error
+	 */
+	private function _additional_primary_registrant_inputs(EE_Registration $registration)
+	{
+		// generate hidden input
+		return new EE_Hidden_Input(
+			array(
+				'html_id' => 'primary_registrant',
+				'default' => $registration->reg_url_link(),
+			)
+		);
+	}
+
+
+	/**
+	 * @access public
+	 * @param EE_Registration $registration
+	 * @param EE_Question     $question
+	 * @return    EE_Form_Input_Base
+	 * @throws \EE_Error
+	 */
+	public function reg_form_question(EE_Registration $registration, EE_Question $question)
+	{
+
+		// if this question was for an attendee detail, then check for that answer
+		$answer_value = EEM_Answer::instance()->get_attendee_property_answer_value(
+			$registration,
+			$question->system_ID()
+		);
+		$answer       = $answer_value === null
+			? EEM_Answer::instance()->get_one(
+				array(array('QST_ID' => $question->ID(), 'REG_ID' => $registration->ID()))
+			)
+			: null;
+		// if NOT returning to edit an existing registration
+		// OR if this question is for an attendee property
+		// OR we still don't have an EE_Answer object
+		if ($answer_value || ! $answer instanceof EE_Answer || ! $registration->reg_url_link()) {
+			// create an EE_Answer object for storing everything in
+			$answer = EE_Answer::new_instance(array(
+				'QST_ID' => $question->ID(),
+				'REG_ID' => $registration->ID(),
+			));
+		}
+		// verify instance
+		if ($answer instanceof EE_Answer) {
+			if (! empty($answer_value)) {
+				$answer->set('ANS_value', $answer_value);
+			}
+			$answer->cache('Question', $question);
+			//remember system ID had a bug where sometimes it could be null
+			$answer_cache_id = $question->is_system_question()
+				? $question->system_ID() . '-' . $registration->reg_url_link()
+				: $question->ID() . '-' . $registration->reg_url_link();
+			$registration->cache('Answer', $answer, $answer_cache_id);
+		}
+		return $this->_generate_question_input($registration, $question, $answer);
+
+	}
+
+
+	/**
+	 * @param EE_Registration $registration
+	 * @param EE_Question     $question
+	 * @param                 mixed EE_Answer|NULL      $answer
+	 * @return EE_Form_Input_Base
+	 * @throws \EE_Error
+	 */
+	private function _generate_question_input(EE_Registration $registration, EE_Question $question, $answer)
+	{
+		$identifier                             = $question->is_system_question() ? $question->system_ID() : $question->ID();
+		$this->_required_questions[$identifier] = $question->required() ? true : false;
+		add_filter(
+			'FHEE__EE_Question__generate_form_input__country_options',
+			array($this, 'use_cached_countries_for_form_input'),
+			10,
+			4
+		);
+		add_filter(
+			'FHEE__EE_Question__generate_form_input__state_options',
+			array($this, 'use_cached_states_for_form_input'),
+			10,
+			4
+		);
+		$input_constructor_args                  = array(
+			'html_name'        => 'ee_reg_qstn[' . $registration->ID() . '][' . $identifier . ']',
+			'html_id'          => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
+			'html_class'       => 'ee-reg-qstn ee-reg-qstn-' . $identifier,
+			'html_label_id'    => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
+			'html_label_class' => 'ee-reg-qstn',
+		);
+		$input_constructor_args['html_label_id'] .= '-lbl';
+		if ($answer instanceof EE_Answer && $answer->ID()) {
+			$input_constructor_args['html_name']     .= '[' . $answer->ID() . ']';
+			$input_constructor_args['html_id']       .= '-' . $answer->ID();
+			$input_constructor_args['html_label_id'] .= '-' . $answer->ID();
+		}
+		$form_input = $question->generate_form_input(
+			$registration,
+			$answer,
+			$input_constructor_args
+		);
+		remove_filter(
+			'FHEE__EE_Question__generate_form_input__country_options',
+			array($this, 'use_cached_countries_for_form_input')
+		);
+		remove_filter(
+			'FHEE__EE_Question__generate_form_input__state_options',
+			array($this, 'use_cached_states_for_form_input')
+		);
+		return $form_input;
+	}
+
+
+	/**
+	 * Gets the list of countries for the form input
+	 *
+	 * @param array|null       $countries_list
+	 * @param \EE_Question     $question
+	 * @param \EE_Registration $registration
+	 * @param \EE_Answer       $answer
+	 * @return array 2d keys are country IDs, values are their names
+	 */
+	public function use_cached_countries_for_form_input(
+		$countries_list,
+		\EE_Question $question = null,
+		\EE_Registration $registration = null,
+		\EE_Answer $answer = null
+	) {
+		$country_options = array('' => '');
+		// get possibly cached list of countries
+		$countries = $this->checkout->action === 'process_reg_step'
+			? EEM_Country::instance()->get_all_countries()
+			: EEM_Country::instance()->get_all_active_countries();
+		if (! empty($countries)) {
+			foreach ($countries as $country) {
+				if ($country instanceof EE_Country) {
+					$country_options[$country->ID()] = $country->name();
+				}
+			}
+		}
+		if ($question instanceof EE_Question
+			&& $registration instanceof EE_Registration) {
+			$answer = EEM_Answer::instance()->get_one(
+				array(array('QST_ID' => $question->ID(), 'REG_ID' => $registration->ID()))
+			);
+		} else {
+			$answer = EE_Answer::new_instance();
+		}
+		$country_options = apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information___generate_question_input__country_options',
+			$country_options,
+			$this,
+			$registration,
+			$question,
+			$answer
+		);
+		return $country_options;
+	}
+
+
+	/**
+	 * Gets the list of states for the form input
+	 *
+	 * @param array|null       $states_list
+	 * @param \EE_Question     $question
+	 * @param \EE_Registration $registration
+	 * @param \EE_Answer       $answer
+	 * @return array 2d keys are state IDs, values are their names
+	 */
+	public function use_cached_states_for_form_input(
+		$states_list,
+		\EE_Question $question = null,
+		\EE_Registration $registration = null,
+		\EE_Answer $answer = null
+	) {
+		$state_options = array('' => array('' => ''));
+		$states        = $this->checkout->action === 'process_reg_step'
+			? EEM_State::instance()->get_all_states()
+			: EEM_State::instance()->get_all_active_states();
+		if (! empty($states)) {
+			foreach ($states as $state) {
+				if ($state instanceof EE_State) {
+					$state_options[$state->country()->name()][$state->ID()] = $state->name();
+				}
+			}
+		}
+		$state_options = apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information___generate_question_input__state_options',
+			$state_options,
+			$this,
+			$registration,
+			$question,
+			$answer
+		);
+		return $state_options;
+	}
+
+
+
+
+
+
+	/********************************************************************************************************/
+	/****************************************  PROCESS REG STEP  ****************************************/
+	/********************************************************************************************************/
+	/**
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function process_reg_step()
+	{
+		do_action('AHEE_log', __FILE__, __FUNCTION__, '');
+		// grab validated data from form
+		$valid_data = $this->checkout->current_step->valid_data();
+		// EEH_Debug_Tools::printr( $_REQUEST, '$_REQUEST', __FILE__, __LINE__ );
+		// EEH_Debug_Tools::printr( $valid_data, '$valid_data', __FILE__, __LINE__ );
+		// if we don't have any $valid_data then something went TERRIBLY WRONG !!!
+		if (empty($valid_data)) {
+			EE_Error::add_error(
+				__('No valid question responses were received.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		if (! $this->checkout->transaction instanceof EE_Transaction || ! $this->checkout->continue_reg) {
+			EE_Error::add_error(
+				__('A valid transaction could not be initiated for processing your registrations.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// get cached registrations
+		$registrations = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
+		// verify we got the goods
+		if (empty($registrations)) {
+			EE_Error::add_error(
+				__('Your form data could not be applied to any valid registrations.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// extract attendee info from form data and save to model objects
+		$registrations_processed = $this->_process_registrations($registrations, $valid_data);
+		// if first pass thru SPCO,
+		// then let's check processed registrations against the total number of tickets in the cart
+		if ($registrations_processed === false) {
+			// but return immediately if the previous step exited early due to errors
+			return false;
+		} else if (! $this->checkout->revisit && $registrations_processed !== $this->checkout->total_ticket_count) {
+			// generate a correctly translated string for all possible singular/plural combinations
+			if ($this->checkout->total_ticket_count === 1 && $registrations_processed !== 1) {
+				$error_msg = sprintf(
+					__(
+						'There was %1$d ticket in the Event Queue, but %2$ds registrations were processed',
+						'event_espresso'
+					),
+					$this->checkout->total_ticket_count,
+					$registrations_processed
+				);
+			} else if ($this->checkout->total_ticket_count !== 1 && $registrations_processed === 1) {
+				$error_msg = sprintf(
+					__(
+						'There was a total of %1$d tickets in the Event Queue, but only %2$ds registration was processed',
+						'event_espresso'
+					),
+					$this->checkout->total_ticket_count,
+					$registrations_processed
+				);
+			} else {
+				$error_msg = sprintf(
+					__(
+						'There was a total of %1$d tickets in the Event Queue, but %2$ds registrations were processed',
+						'event_espresso'
+					),
+					$this->checkout->total_ticket_count,
+					$registrations_processed
+				);
+			}
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		// mark this reg step as completed
+		$this->set_completed();
+		$this->_set_success_message(
+			__('The Attendee Information Step has been successfully completed.', 'event_espresso')
+		);
+		//do action in case a plugin wants to do something with the data submitted in step 1.
+		//passes EE_Single_Page_Checkout, and it's posted data
+		do_action('AHEE__EE_Single_Page_Checkout__process_attendee_information__end', $this, $valid_data);
+		return true;
+	}
+
+
+	/**
+	 *    _process_registrations
+	 *
+	 * @param EE_Registration[] $registrations
+	 * @param array             $valid_data
+	 * @return boolean | int
+	 * @throws \EE_Error
+	 */
+	private function _process_registrations($registrations = array(), $valid_data = array())
+	{
+		// load resources and set some defaults
+		EE_Registry::instance()->load_model('Attendee');
+		// holder for primary registrant attendee object
+		$this->checkout->primary_attendee_obj = null;
+		// array for tracking reg form data for the primary registrant
+		$primary_registrant = array(
+			'line_item_id' => null,
+		);
+		$copy_primary       = false;
+		// reg form sections that do not contain inputs
+		$non_input_form_sections = array(
+			'primary_registrant',
+			'additional_attendee_reg_info',
+			'spco_copy_attendee_chk',
+		);
+		// attendee counter
+		$att_nmbr = 0;
+		// grab the saved registrations from the transaction
+		foreach ($registrations as $registration) {
+			// verify EE_Registration object
+			if (! $registration instanceof EE_Registration) {
+				EE_Error::add_error(
+					__(
+						'An invalid Registration object was discovered when attempting to process your registration information.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+			/** @var string $reg_url_link */
+			$reg_url_link = $registration->reg_url_link();
+			// reg_url_link exists ?
+			if (! empty($reg_url_link)) {
+				// should this registration be processed during this visit ?
+				if ($this->checkout->visit_allows_processing_of_this_registration($registration)) {
+					// if NOT revisiting, then let's save the registration now,
+					// so that we have a REG_ID to use when generating other objects
+					if (! $this->checkout->revisit) {
+						$registration->save();
+					}
+					/**
+					 * This allows plugins to trigger a fail on processing of a
+					 * registration for any conditions they may have for it to pass.
+					 *
+					 * @var bool   if true is returned by the plugin then the
+					 *            registration processing is halted.
+					 */
+					if (apply_filters(
+						'FHEE__EE_SPCO_Reg_Step_Attendee_Information___process_registrations__pre_registration_process',
+						false,
+						$att_nmbr,
+						$registration,
+						$registrations,
+						$valid_data,
+						$this
+					)) {
+						return false;
+					}
+
+					// Houston, we have a registration!
+					$att_nmbr++;
+					$this->_attendee_data[$reg_url_link] = array();
+					// grab any existing related answer objects
+					$this->_registration_answers = $registration->answers();
+					// unset( $valid_data[ $reg_url_link ]['additional_attendee_reg_info'] );
+					if (isset($valid_data[$reg_url_link])) {
+						// do we need to copy basic info from primary attendee ?
+						$copy_primary = isset($valid_data[$reg_url_link]['additional_attendee_reg_info'])
+										&& absint($valid_data[$reg_url_link]['additional_attendee_reg_info']) === 0
+							? true
+							: false;
+						// filter form input data for this registration
+						$valid_data[$reg_url_link] = (array)apply_filters(
+							'FHEE__EE_Single_Page_Checkout__process_attendee_information__valid_data_line_item',
+							$valid_data[$reg_url_link]
+						);
+						// EEH_Debug_Tools::printr( $valid_data[ $reg_url_link ], '$valid_data[ $reg_url_link ]', __FILE__, __LINE__ );
+						if (isset($valid_data['primary_attendee'])) {
+							$primary_registrant['line_item_id'] = ! empty($valid_data['primary_attendee'])
+								? $valid_data['primary_attendee']
+								: false;
+							unset($valid_data['primary_attendee']);
+						}
+						// now loop through our array of valid post data && process attendee reg forms
+						foreach ($valid_data[$reg_url_link] as $form_section => $form_inputs) {
+							if (! in_array($form_section, $non_input_form_sections)) {
+								foreach ($form_inputs as $form_input => $input_value) {
+									// \EEH_Debug_Tools::printr( $input_value, $form_input, __FILE__, __LINE__ );
+									// check for critical inputs
+									if (
+									! $this->_verify_critical_attendee_details_are_set_and_validate_email(
+										$form_input,
+										$input_value
+									)
+									) {
+										return false;
+									}
+									// store a bit of data about the primary attendee
+									if (
+										$att_nmbr === 1
+										&& ! empty($input_value)
+										&& $reg_url_link === $primary_registrant['line_item_id']
+									) {
+										$primary_registrant[$form_input] = $input_value;
+									} else if (
+										$copy_primary
+										&& $input_value === null
+										&& isset($primary_registrant[$form_input])
+									) {
+										$input_value = $primary_registrant[$form_input];
+									}
+									// now attempt to save the input data
+									if (
+									! $this->_save_registration_form_input(
+										$registration,
+										$form_input,
+										$input_value
+									)
+									) {
+										EE_Error::add_error(
+											sprintf(
+												__(
+													'Unable to save registration form data for the form input: "%1$s" with the submitted value: "%2$s"',
+													'event_espresso'
+												),
+												$form_input,
+												$input_value
+											),
+											__FILE__,
+											__FUNCTION__,
+											__LINE__
+										);
+										return false;
+									}
+								}
+							}
+						}  // end of foreach ( $valid_data[ $reg_url_link ] as $form_section => $form_inputs )
+					}
+					//EEH_Debug_Tools::printr( $this->_attendee_data, '$this->_attendee_data', __FILE__, __LINE__ );
+					// this registration does not require additional attendee information ?
+					if (
+						$copy_primary
+						&& $att_nmbr > 1
+						&& $this->checkout->primary_attendee_obj instanceof EE_Attendee
+					) {
+						// just copy the primary registrant
+						$attendee = $this->checkout->primary_attendee_obj;
+					} else {
+						// ensure critical details are set for additional attendees
+						$this->_attendee_data[$reg_url_link] = $att_nmbr > 1
+							? $this->_copy_critical_attendee_details_from_primary_registrant(
+								$this->_attendee_data[$reg_url_link]
+							)
+							: $this->_attendee_data[$reg_url_link];
+						// execute create attendee command (which may return an existing attendee)
+						$attendee = EE_Registry::instance()->BUS->execute(
+							new CreateAttendeeCommand(
+								$this->_attendee_data[$reg_url_link],
+								$registration
+							)
+						);
+						// who's #1 ?
+						if ($att_nmbr === 1) {
+							$this->checkout->primary_attendee_obj = $attendee;
+						}
+					}
+					// EEH_Debug_Tools::printr( $attendee, '$attendee', __FILE__, __LINE__ );
+					// add relation to registration, set attendee ID, and cache attendee
+					$this->_associate_attendee_with_registration($registration, $attendee);
+					// \EEH_Debug_Tools::printr( $registration, '$registration', __FILE__, __LINE__ );
+					if (! $registration->attendee() instanceof EE_Attendee) {
+						EE_Error::add_error(sprintf(__('Registration %s has an invalid or missing Attendee object.',
+							'event_espresso'), $reg_url_link), __FILE__, __FUNCTION__, __LINE__);
+						return false;
+					}
+					/** @type EE_Registration_Processor $registration_processor */
+					$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+					// at this point, we should have enough details about the registrant to consider the registration NOT incomplete
+					$registration_processor->toggle_incomplete_registration_status_to_default($registration, false);
+					// we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
+					$this->checkout->transaction->toggle_failed_transaction_status();
+					// if we've gotten this far, then let's save what we have
+					$registration->save();
+					// add relation between TXN and registration
+					$this->_associate_registration_with_transaction($registration);
+				} // end of if ( ! $this->checkout->revisit || $this->checkout->primary_revisit || ( $this->checkout->revisit && $this->checkout->reg_url_link == $reg_url_link )) {
+
+			} else {
+				EE_Error::add_error(__('An invalid or missing line item ID was encountered while attempting to process the registration form.',
+					'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+				// remove malformed data
+				unset($valid_data[$reg_url_link]);
+				return false;
+			}
+
+		} // end of foreach ( $this->checkout->transaction->registrations()  as $registration )
+		return $att_nmbr;
+	}
+
+
+	/**
+	 *    _save_registration_form_input
+	 *
+	 * @param EE_Registration $registration
+	 * @param string          $form_input
+	 * @param string          $input_value
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	private function _save_registration_form_input(
+		EE_Registration $registration,
+		$form_input = '',
+		$input_value = ''
+	) {
+		// \EEH_Debug_Tools::printr( __FUNCTION__, __CLASS__, __FILE__, __LINE__, 2 );
+		// \EEH_Debug_Tools::printr( $form_input, '$form_input', __FILE__, __LINE__ );
+		// \EEH_Debug_Tools::printr( $input_value, '$input_value', __FILE__, __LINE__ );
+		// allow for plugins to hook in and do their own processing of the form input.
+		// For plugins to bypass normal processing here, they just need to return a boolean value.
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information___save_registration_form_input',
+			false,
+			$registration,
+			$form_input,
+			$input_value,
+			$this
+		)) {
+			return true;
+		}
+		/*
          * $answer_cache_id is the key used to find the EE_Answer we want
          * @see https://events.codebasehq.com/projects/event-espresso/tickets/10477
          */
-        $answer_cache_id = $this->checkout->reg_url_link
-            ? $form_input . '-' . $registration->reg_url_link()
-            : $form_input;
-        $answer_is_obj   = isset($this->_registration_answers[$answer_cache_id])
-                           && $this->_registration_answers[$answer_cache_id] instanceof EE_Answer
-            ? true
-            : false;
-        //rename form_inputs if they are EE_Attendee properties
-        switch ((string)$form_input) {
-
-            case 'state' :
-            case 'STA_ID' :
-                $attendee_property = true;
-                $form_input        = 'STA_ID';
-                break;
-
-            case 'country' :
-            case 'CNT_ISO' :
-                $attendee_property = true;
-                $form_input        = 'CNT_ISO';
-                break;
-
-            default :
-                $ATT_input = 'ATT_' . $form_input;
-                //EEH_Debug_Tools::printr( $ATT_input, '$ATT_input', __FILE__, __LINE__ );
-                $attendee_property = EEM_Attendee::instance()->has_field($ATT_input) ? true : false;
-                $form_input        = $attendee_property ? 'ATT_' . $form_input : $form_input;
-        }
-        // EEH_Debug_Tools::printr( $answer_cache_id, '$answer_cache_id', __FILE__, __LINE__ );
-        // EEH_Debug_Tools::printr( $attendee_property, '$attendee_property', __FILE__, __LINE__ );
-        // EEH_Debug_Tools::printr( $answer_is_obj, '$answer_is_obj', __FILE__, __LINE__ );
-        // if this form input has a corresponding attendee property
-        if ($attendee_property) {
-            $this->_attendee_data[$registration->reg_url_link()][$form_input] = $input_value;
-            if ($answer_is_obj) {
-                // and delete the corresponding answer since we won't be storing this data in that object
-                $registration->_remove_relation_to($this->_registration_answers[$answer_cache_id], 'Answer');
-                $this->_registration_answers[$answer_cache_id]->delete_permanently();
-            }
-            return true;
-        } elseif ($answer_is_obj) {
-            // save this data to the answer object
-            $this->_registration_answers[$answer_cache_id]->set_value($input_value);
-            $result = $this->_registration_answers[$answer_cache_id]->save();
-            return $result !== false ? true : false;
-        } else {
-            foreach ($this->_registration_answers as $answer) {
-                if ($answer instanceof EE_Answer && $answer->question_ID() === $answer_cache_id) {
-                    $answer->set_value($input_value);
-                    $result = $answer->save();
-                    return $result !== false ? true : false;
-                }
-            }
-        }
-        return false;
-    }
-
-
-    /**
-     *    _verify_critical_attendee_details_are_set
-     *
-     * @param string $form_input
-     * @param string $input_value
-     * @return boolean
-     */
-    private function _verify_critical_attendee_details_are_set_and_validate_email(
-        $form_input = '',
-        $input_value = ''
-    ) {
-        if (empty($input_value)) {
-            // if the form input isn't marked as being required, then just return
-            if (! isset($this->_required_questions[$form_input]) || ! $this->_required_questions[$form_input]) {
-                return true;
-            }
-            switch ($form_input) {
-                case 'fname' :
-                    EE_Error::add_error(
-                        __('First Name is a required value.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return false;
-                    break;
-                case 'lname' :
-                    EE_Error::add_error(
-                        __('Last Name is a required value.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return false;
-                    break;
-                case 'email' :
-                    EE_Error::add_error(
-                        __('Please enter a valid email address.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return false;
-                    break;
-            }
-        }
-        return true;
-    }
-
-
-    /**
-     *    _associate_attendee_with_registration
-     *
-     * @param EE_Registration $registration
-     * @param EE_Attendee     $attendee
-     * @return void
-     * @throws \EE_Error
-     */
-    private function _associate_attendee_with_registration(EE_Registration $registration, EE_Attendee $attendee)
-    {
-        // add relation to attendee
-        $registration->_add_relation_to($attendee, 'Attendee');
-        $registration->set_attendee_id($attendee->ID());
-        $registration->update_cache_after_object_save('Attendee', $attendee);
-    }
-
-
-    /**
-     *    _associate_registration_with_transaction
-     *
-     * @param EE_Registration $registration
-     * @return void
-     * @throws \EE_Error
-     */
-    private function _associate_registration_with_transaction(EE_Registration $registration)
-    {
-        // add relation to registration
-        $this->checkout->transaction->_add_relation_to($registration, 'Registration');
-        $this->checkout->transaction->update_cache_after_object_save('Registration', $registration);
-    }
-
-
-    /**
-     *    _copy_critical_attendee_details_from_primary_registrant
-     *    ensures that all attendees at least have data for first name, last name, and email address
-     *
-     * @param array $attendee_data
-     * @return array
-     * @throws \EE_Error
-     */
-    private function _copy_critical_attendee_details_from_primary_registrant($attendee_data = array())
-    {
-        // bare minimum critical details include first name, last name, email address
-        $critical_attendee_details = array('ATT_fname', 'ATT_lname', 'ATT_email');
-        // add address info to critical details?
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Attendee_Information__merge_address_details_with_critical_attendee_details',
-            false
-        )) {
-            $address_details           = array(
-                'ATT_address',
-                'ATT_address2',
-                'ATT_city',
-                'STA_ID',
-                'CNT_ISO',
-                'ATT_zip',
-                'ATT_phone',
-            );
-            $critical_attendee_details = array_merge($critical_attendee_details, $address_details);
-        }
-        foreach ($critical_attendee_details as $critical_attendee_detail) {
-            if (! isset($attendee_data[$critical_attendee_detail])
-                || empty($attendee_data[$critical_attendee_detail])
-            ) {
-                $attendee_data[$critical_attendee_detail] = $this->checkout->primary_attendee_obj->get(
-                    $critical_attendee_detail
-                );
-            }
-        }
-        return $attendee_data;
-    }
-
-
-    /**
-     *    update_reg_step
-     *    this is the final step after a user  revisits the site to edit their attendee information
-     *    this gets called AFTER the process_reg_step() method above
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function update_reg_step()
-    {
-        // save everything
-        if ($this->process_reg_step()) {
-            $this->checkout->redirect     = true;
-            $this->checkout->redirect_url = add_query_arg(
-                array(
-                    'e_reg_url_link' => $this->checkout->reg_url_link,
-                    'revisit'        => true,
-                ),
-                $this->checkout->thank_you_page_url
-            );
-            $this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
-            return true;
-        }
-        return false;
-    }
+		$answer_cache_id = $this->checkout->reg_url_link
+			? $form_input . '-' . $registration->reg_url_link()
+			: $form_input;
+		$answer_is_obj   = isset($this->_registration_answers[$answer_cache_id])
+						   && $this->_registration_answers[$answer_cache_id] instanceof EE_Answer
+			? true
+			: false;
+		//rename form_inputs if they are EE_Attendee properties
+		switch ((string)$form_input) {
+
+			case 'state' :
+			case 'STA_ID' :
+				$attendee_property = true;
+				$form_input        = 'STA_ID';
+				break;
+
+			case 'country' :
+			case 'CNT_ISO' :
+				$attendee_property = true;
+				$form_input        = 'CNT_ISO';
+				break;
+
+			default :
+				$ATT_input = 'ATT_' . $form_input;
+				//EEH_Debug_Tools::printr( $ATT_input, '$ATT_input', __FILE__, __LINE__ );
+				$attendee_property = EEM_Attendee::instance()->has_field($ATT_input) ? true : false;
+				$form_input        = $attendee_property ? 'ATT_' . $form_input : $form_input;
+		}
+		// EEH_Debug_Tools::printr( $answer_cache_id, '$answer_cache_id', __FILE__, __LINE__ );
+		// EEH_Debug_Tools::printr( $attendee_property, '$attendee_property', __FILE__, __LINE__ );
+		// EEH_Debug_Tools::printr( $answer_is_obj, '$answer_is_obj', __FILE__, __LINE__ );
+		// if this form input has a corresponding attendee property
+		if ($attendee_property) {
+			$this->_attendee_data[$registration->reg_url_link()][$form_input] = $input_value;
+			if ($answer_is_obj) {
+				// and delete the corresponding answer since we won't be storing this data in that object
+				$registration->_remove_relation_to($this->_registration_answers[$answer_cache_id], 'Answer');
+				$this->_registration_answers[$answer_cache_id]->delete_permanently();
+			}
+			return true;
+		} elseif ($answer_is_obj) {
+			// save this data to the answer object
+			$this->_registration_answers[$answer_cache_id]->set_value($input_value);
+			$result = $this->_registration_answers[$answer_cache_id]->save();
+			return $result !== false ? true : false;
+		} else {
+			foreach ($this->_registration_answers as $answer) {
+				if ($answer instanceof EE_Answer && $answer->question_ID() === $answer_cache_id) {
+					$answer->set_value($input_value);
+					$result = $answer->save();
+					return $result !== false ? true : false;
+				}
+			}
+		}
+		return false;
+	}
+
+
+	/**
+	 *    _verify_critical_attendee_details_are_set
+	 *
+	 * @param string $form_input
+	 * @param string $input_value
+	 * @return boolean
+	 */
+	private function _verify_critical_attendee_details_are_set_and_validate_email(
+		$form_input = '',
+		$input_value = ''
+	) {
+		if (empty($input_value)) {
+			// if the form input isn't marked as being required, then just return
+			if (! isset($this->_required_questions[$form_input]) || ! $this->_required_questions[$form_input]) {
+				return true;
+			}
+			switch ($form_input) {
+				case 'fname' :
+					EE_Error::add_error(
+						__('First Name is a required value.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return false;
+					break;
+				case 'lname' :
+					EE_Error::add_error(
+						__('Last Name is a required value.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return false;
+					break;
+				case 'email' :
+					EE_Error::add_error(
+						__('Please enter a valid email address.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return false;
+					break;
+			}
+		}
+		return true;
+	}
+
+
+	/**
+	 *    _associate_attendee_with_registration
+	 *
+	 * @param EE_Registration $registration
+	 * @param EE_Attendee     $attendee
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	private function _associate_attendee_with_registration(EE_Registration $registration, EE_Attendee $attendee)
+	{
+		// add relation to attendee
+		$registration->_add_relation_to($attendee, 'Attendee');
+		$registration->set_attendee_id($attendee->ID());
+		$registration->update_cache_after_object_save('Attendee', $attendee);
+	}
+
+
+	/**
+	 *    _associate_registration_with_transaction
+	 *
+	 * @param EE_Registration $registration
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	private function _associate_registration_with_transaction(EE_Registration $registration)
+	{
+		// add relation to registration
+		$this->checkout->transaction->_add_relation_to($registration, 'Registration');
+		$this->checkout->transaction->update_cache_after_object_save('Registration', $registration);
+	}
+
+
+	/**
+	 *    _copy_critical_attendee_details_from_primary_registrant
+	 *    ensures that all attendees at least have data for first name, last name, and email address
+	 *
+	 * @param array $attendee_data
+	 * @return array
+	 * @throws \EE_Error
+	 */
+	private function _copy_critical_attendee_details_from_primary_registrant($attendee_data = array())
+	{
+		// bare minimum critical details include first name, last name, email address
+		$critical_attendee_details = array('ATT_fname', 'ATT_lname', 'ATT_email');
+		// add address info to critical details?
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Attendee_Information__merge_address_details_with_critical_attendee_details',
+			false
+		)) {
+			$address_details           = array(
+				'ATT_address',
+				'ATT_address2',
+				'ATT_city',
+				'STA_ID',
+				'CNT_ISO',
+				'ATT_zip',
+				'ATT_phone',
+			);
+			$critical_attendee_details = array_merge($critical_attendee_details, $address_details);
+		}
+		foreach ($critical_attendee_details as $critical_attendee_detail) {
+			if (! isset($attendee_data[$critical_attendee_detail])
+				|| empty($attendee_data[$critical_attendee_detail])
+			) {
+				$attendee_data[$critical_attendee_detail] = $this->checkout->primary_attendee_obj->get(
+					$critical_attendee_detail
+				);
+			}
+		}
+		return $attendee_data;
+	}
+
+
+	/**
+	 *    update_reg_step
+	 *    this is the final step after a user  revisits the site to edit their attendee information
+	 *    this gets called AFTER the process_reg_step() method above
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function update_reg_step()
+	{
+		// save everything
+		if ($this->process_reg_step()) {
+			$this->checkout->redirect     = true;
+			$this->checkout->redirect_url = add_query_arg(
+				array(
+					'e_reg_url_link' => $this->checkout->reg_url_link,
+					'revisit'        => true,
+				),
+				$this->checkout->thank_you_page_url
+			);
+			$this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
+			return true;
+		}
+		return false;
+	}
 
 
 }

Spacing +51 added lines, -52 removed lines

@@ -1,6 +1,6 @@ 
 <?php use EventEspresso\core\services\commands\attendee\CreateAttendeeCommand;
 
-if (! defined('EVENT_ESPRESSO_VERSION')) {
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
     exit('No direct script access allowed');
 }
 
@@ -47,7 +47,7 @@ 
     {
         $this->_slug     = 'attendee_information';
         $this->_name     = __('Attendee Information', 'event_espresso');
-        $this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'attendee_info_main.template.php';
+        $this->_template = SPCO_REG_STEPS_PATH.$this->_slug.DS.'attendee_info_main.template.php';
         $this->checkout  = $checkout;
         $this->_reset_success_message();
         $this->set_instructions(
@@ -67,18 +67,18 @@ 
             'Please answer all required questions correctly before proceeding.',
             'event_espresso'
         );
-        EE_Registry::$i18n_js_strings['attendee_info_copied']      = sprintf(
+        EE_Registry::$i18n_js_strings['attendee_info_copied'] = sprintf(
             __(
                 'The attendee information was successfully copied.%sPlease ensure the rest of the registration form is completed before proceeding.',
                 'event_espresso'
             ),
             '<br/>'
         );
-        EE_Registry::$i18n_js_strings['attendee_info_copy_error']  = __(
+        EE_Registry::$i18n_js_strings['attendee_info_copy_error'] = __(
             'An unknown error occurred on the server while attempting to copy the attendee information. Please refresh the page and try again.',
             'event_espresso'
         );
-        EE_Registry::$i18n_js_strings['enter_valid_email']         = __(
+        EE_Registry::$i18n_js_strings['enter_valid_email'] = __(
             'You must enter a valid email address.',
             'event_espresso'
         );
@@ -139,14 +139,14 @@ 
                     && $this->checkout->visit_allows_processing_of_this_registration($registration)
                 ) {
                     $subsections[$registration->reg_url_link()] = $this->_registrations_reg_form($registration);
-                    if (! $this->checkout->admin_request) {
+                    if ( ! $this->checkout->admin_request) {
                         $template_args['registrations'][$registration->reg_url_link()]    = $registration;
                         $template_args['ticket_count'][$registration->ticket()->ID()]     = isset(
                             $template_args['ticket_count'][$registration->ticket()->ID()]
                         )
                             ? $template_args['ticket_count'][$registration->ticket()->ID()] + 1
                             : 1;
-                        $ticket_line_item                                                 = EEH_Line_Item::get_line_items_by_object_type_and_IDs(
+                        $ticket_line_item = EEH_Line_Item::get_line_items_by_object_type_and_IDs(
                             $this->checkout->cart->get_grand_total(),
                             'Ticket',
                             array($registration->ticket()->ID())
@@ -185,8 +185,7 @@ 
                 'html_id'         => $this->reg_form_name(),
                 'subsections'     => $subsections,
                 'layout_strategy' => $this->checkout->admin_request ?
-                    new EE_Div_Per_Section_Layout() :
-                    new EE_Template_Layout(
+                    new EE_Div_Per_Section_Layout() : new EE_Template_Layout(
                         array(
                             'layout_template_file' => $this->_template, // layout_template
                             'template_args'        => $template_args,
@@ -221,7 +220,7 @@ 
             if ($question_groups) {
                 // array of params to pass to parent constructor
                 $form_args = array(
-                    'html_id'         => 'ee-registration-' . $registration->reg_url_link(),
+                    'html_id'         => 'ee-registration-'.$registration->reg_url_link(),
                     'html_class'      => 'ee-reg-form-attendee-dv',
                     'html_style'      => $this->checkout->admin_request
                         ? 'padding:0em 2em 1em; margin:3em 0 0; border:1px solid #ddd;'
@@ -275,7 +274,7 @@ 
         // generate hidden input
         return new EE_Hidden_Input(
             array(
-                'html_id' => 'additional-attendee-reg-info-' . $registration->reg_url_link(),
+                'html_id' => 'additional-attendee-reg-info-'.$registration->reg_url_link(),
                 'default' => $additional_attendee_reg_info,
             )
         );
@@ -292,11 +291,11 @@ 
     {
         // array of params to pass to parent constructor
         $form_args = array(
-            'html_id'         => 'ee-reg-form-qstn-grp-' . $question_group->identifier(),
+            'html_id'         => 'ee-reg-form-qstn-grp-'.$question_group->identifier(),
             'html_class'      => $this->checkout->admin_request
                 ? 'form-table ee-reg-form-qstn-grp-dv'
                 : 'ee-reg-form-qstn-grp-dv',
-            'html_label_id'   => 'ee-reg-form-qstn-grp-' . $question_group->identifier() . '-lbl',
+            'html_label_id'   => 'ee-reg-form-qstn-grp-'.$question_group->identifier().'-lbl',
             'subsections'     => array(
                 'reg_form_qstn_grp_hdr' => $this->_question_group_header($question_group),
             ),
@@ -307,7 +306,7 @@ 
         // where params
         $query_params = array('QST_deleted' => 0);
         // don't load admin only questions on the frontend
-        if (! $this->checkout->admin_request) {
+        if ( ! $this->checkout->admin_request) {
             $query_params['QST_admin_only'] = array('!=', true);
         }
         $questions = $question_group->get_many_related(
@@ -416,7 +415,7 @@ 
                 'subsections'     => $this->_copy_attendee_info_inputs(),
                 'layout_strategy' => new EE_Template_Layout(
                     array(
-                        'layout_template_file'     => SPCO_REG_STEPS_PATH . $this->_slug . DS . 'copy_attendee_info.template.php',
+                        'layout_template_file'     => SPCO_REG_STEPS_PATH.$this->_slug.DS.'copy_attendee_info.template.php',
                         'begin_template_file'      => null,
                         'input_template_file'      => null,
                         'subsection_template_file' => null,
@@ -438,7 +437,7 @@ 
     {
         return new EE_Form_Section_HTML(
             EEH_Template::locate_template(
-                SPCO_REG_STEPS_PATH . $this->_slug . DS . '_auto_copy_attendee_info.template.php',
+                SPCO_REG_STEPS_PATH.$this->_slug.DS.'_auto_copy_attendee_info.template.php',
                 apply_filters(
                     'FHEE__EE_SPCO_Reg_Step_Attendee_Information__auto_copy_attendee_info__template_args',
                     array()
@@ -468,17 +467,17 @@ 
             if ($registration instanceof EE_Registration && ! $registration->is_primary_registrant()) {
                 // if this is a new ticket OR if this is the very first additional attendee after the primary attendee
                 if ($registration->ticket()->ID() !== $prev_ticket) {
-                    $item_name                                                                                         = $registration->ticket()->name();
-                    $item_name                                                                                         .= $registration->ticket()->description() !== ''
-                        ? ' - ' . $registration->ticket()->description()
+                    $item_name = $registration->ticket()->name();
+                    $item_name .= $registration->ticket()->description() !== ''
+                        ? ' - '.$registration->ticket()->description()
                         : '';
-                    $copy_attendee_info_inputs['spco_copy_attendee_chk[ticket-' . $registration->ticket()->ID() . ']'] = new EE_Form_Section_HTML(
-                        '<h6 class="spco-copy-attendee-event-hdr">' . $item_name . '</h6>'
+                    $copy_attendee_info_inputs['spco_copy_attendee_chk[ticket-'.$registration->ticket()->ID().']'] = new EE_Form_Section_HTML(
+                        '<h6 class="spco-copy-attendee-event-hdr">'.$item_name.'</h6>'
                     );
                     $prev_ticket                                                                                       = $registration->ticket()->ID();
                 }
 
-                $copy_attendee_info_inputs['spco_copy_attendee_chk[' . $registration->ID() . ']'] = new
+                $copy_attendee_info_inputs['spco_copy_attendee_chk['.$registration->ID().']'] = new
                 EE_Checkbox_Multi_Input(
                     array(
                         $registration->ID() => sprintf(
@@ -487,7 +486,7 @@ 
                         ),
                     ),
                     array(
-                        'html_id'                 => 'spco-copy-attendee-chk-' . $registration->reg_url_link(),
+                        'html_id'                 => 'spco-copy-attendee-chk-'.$registration->reg_url_link(),
                         'html_class'              => 'spco-copy-attendee-chk ee-do-not-validate',
                         'display_html_label_text' => false,
                     )
@@ -533,7 +532,7 @@ 
             $registration,
             $question->system_ID()
         );
-        $answer       = $answer_value === null
+        $answer = $answer_value === null
             ? EEM_Answer::instance()->get_one(
                 array(array('QST_ID' => $question->ID(), 'REG_ID' => $registration->ID()))
             )
@@ -550,14 +549,14 @@ 
         }
         // verify instance
         if ($answer instanceof EE_Answer) {
-            if (! empty($answer_value)) {
+            if ( ! empty($answer_value)) {
                 $answer->set('ANS_value', $answer_value);
             }
             $answer->cache('Question', $question);
             //remember system ID had a bug where sometimes it could be null
             $answer_cache_id = $question->is_system_question()
-                ? $question->system_ID() . '-' . $registration->reg_url_link()
-                : $question->ID() . '-' . $registration->reg_url_link();
+                ? $question->system_ID().'-'.$registration->reg_url_link()
+                : $question->ID().'-'.$registration->reg_url_link();
             $registration->cache('Answer', $answer, $answer_cache_id);
         }
         return $this->_generate_question_input($registration, $question, $answer);
@@ -588,18 +587,18 @@ 
             10,
             4
         );
-        $input_constructor_args                  = array(
-            'html_name'        => 'ee_reg_qstn[' . $registration->ID() . '][' . $identifier . ']',
-            'html_id'          => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
-            'html_class'       => 'ee-reg-qstn ee-reg-qstn-' . $identifier,
-            'html_label_id'    => 'ee_reg_qstn-' . $registration->ID() . '-' . $identifier,
+        $input_constructor_args = array(
+            'html_name'        => 'ee_reg_qstn['.$registration->ID().']['.$identifier.']',
+            'html_id'          => 'ee_reg_qstn-'.$registration->ID().'-'.$identifier,
+            'html_class'       => 'ee-reg-qstn ee-reg-qstn-'.$identifier,
+            'html_label_id'    => 'ee_reg_qstn-'.$registration->ID().'-'.$identifier,
             'html_label_class' => 'ee-reg-qstn',
         );
         $input_constructor_args['html_label_id'] .= '-lbl';
         if ($answer instanceof EE_Answer && $answer->ID()) {
-            $input_constructor_args['html_name']     .= '[' . $answer->ID() . ']';
-            $input_constructor_args['html_id']       .= '-' . $answer->ID();
-            $input_constructor_args['html_label_id'] .= '-' . $answer->ID();
+            $input_constructor_args['html_name']     .= '['.$answer->ID().']';
+            $input_constructor_args['html_id']       .= '-'.$answer->ID();
+            $input_constructor_args['html_label_id'] .= '-'.$answer->ID();
         }
         $form_input = $question->generate_form_input(
             $registration,
@@ -638,7 +637,7 @@ 
         $countries = $this->checkout->action === 'process_reg_step'
             ? EEM_Country::instance()->get_all_countries()
             : EEM_Country::instance()->get_all_active_countries();
-        if (! empty($countries)) {
+        if ( ! empty($countries)) {
             foreach ($countries as $country) {
                 if ($country instanceof EE_Country) {
                     $country_options[$country->ID()] = $country->name();
@@ -684,7 +683,7 @@ 
         $states        = $this->checkout->action === 'process_reg_step'
             ? EEM_State::instance()->get_all_states()
             : EEM_State::instance()->get_all_active_states();
-        if (! empty($states)) {
+        if ( ! empty($states)) {
             foreach ($states as $state) {
                 if ($state instanceof EE_State) {
                     $state_options[$state->country()->name()][$state->ID()] = $state->name();
@@ -731,7 +730,7 @@ 
             );
             return false;
         }
-        if (! $this->checkout->transaction instanceof EE_Transaction || ! $this->checkout->continue_reg) {
+        if ( ! $this->checkout->transaction instanceof EE_Transaction || ! $this->checkout->continue_reg) {
             EE_Error::add_error(
                 __('A valid transaction could not be initiated for processing your registrations.', 'event_espresso'),
                 __FILE__,
@@ -759,7 +758,7 @@ 
         if ($registrations_processed === false) {
             // but return immediately if the previous step exited early due to errors
             return false;
-        } else if (! $this->checkout->revisit && $registrations_processed !== $this->checkout->total_ticket_count) {
+        } else if ( ! $this->checkout->revisit && $registrations_processed !== $this->checkout->total_ticket_count) {
             // generate a correctly translated string for all possible singular/plural combinations
             if ($this->checkout->total_ticket_count === 1 && $registrations_processed !== 1) {
                 $error_msg = sprintf(
@@ -834,7 +833,7 @@ 
         // grab the saved registrations from the transaction
         foreach ($registrations as $registration) {
             // verify EE_Registration object
-            if (! $registration instanceof EE_Registration) {
+            if ( ! $registration instanceof EE_Registration) {
                 EE_Error::add_error(
                     __(
                         'An invalid Registration object was discovered when attempting to process your registration information.',
@@ -849,12 +848,12 @@ 
             /** @var string $reg_url_link */
             $reg_url_link = $registration->reg_url_link();
             // reg_url_link exists ?
-            if (! empty($reg_url_link)) {
+            if ( ! empty($reg_url_link)) {
                 // should this registration be processed during this visit ?
                 if ($this->checkout->visit_allows_processing_of_this_registration($registration)) {
                     // if NOT revisiting, then let's save the registration now,
                     // so that we have a REG_ID to use when generating other objects
-                    if (! $this->checkout->revisit) {
+                    if ( ! $this->checkout->revisit) {
                         $registration->save();
                     }
                     /**
@@ -889,7 +888,7 @@ 
                             ? true
                             : false;
                         // filter form input data for this registration
-                        $valid_data[$reg_url_link] = (array)apply_filters(
+                        $valid_data[$reg_url_link] = (array) apply_filters(
                             'FHEE__EE_Single_Page_Checkout__process_attendee_information__valid_data_line_item',
                             $valid_data[$reg_url_link]
                         );
@@ -902,7 +901,7 @@ 
                         }
                         // now loop through our array of valid post data && process attendee reg forms
                         foreach ($valid_data[$reg_url_link] as $form_section => $form_inputs) {
-                            if (! in_array($form_section, $non_input_form_sections)) {
+                            if ( ! in_array($form_section, $non_input_form_sections)) {
                                 foreach ($form_inputs as $form_input => $input_value) {
                                     // \EEH_Debug_Tools::printr( $input_value, $form_input, __FILE__, __LINE__ );
                                     // check for critical inputs
@@ -987,7 +986,7 @@ 
                     // add relation to registration, set attendee ID, and cache attendee
                     $this->_associate_attendee_with_registration($registration, $attendee);
                     // \EEH_Debug_Tools::printr( $registration, '$registration', __FILE__, __LINE__ );
-                    if (! $registration->attendee() instanceof EE_Attendee) {
+                    if ( ! $registration->attendee() instanceof EE_Attendee) {
                         EE_Error::add_error(sprintf(__('Registration %s has an invalid or missing Attendee object.',
                             'event_espresso'), $reg_url_link), __FILE__, __FUNCTION__, __LINE__);
                         return false;
@@ -1051,14 +1050,14 @@ 
          * @see https://events.codebasehq.com/projects/event-espresso/tickets/10477
          */
         $answer_cache_id = $this->checkout->reg_url_link
-            ? $form_input . '-' . $registration->reg_url_link()
+            ? $form_input.'-'.$registration->reg_url_link()
             : $form_input;
         $answer_is_obj   = isset($this->_registration_answers[$answer_cache_id])
                            && $this->_registration_answers[$answer_cache_id] instanceof EE_Answer
             ? true
             : false;
         //rename form_inputs if they are EE_Attendee properties
-        switch ((string)$form_input) {
+        switch ((string) $form_input) {
 
             case 'state' :
             case 'STA_ID' :
@@ -1073,10 +1072,10 @@ 
                 break;
 
             default :
-                $ATT_input = 'ATT_' . $form_input;
+                $ATT_input = 'ATT_'.$form_input;
                 //EEH_Debug_Tools::printr( $ATT_input, '$ATT_input', __FILE__, __LINE__ );
                 $attendee_property = EEM_Attendee::instance()->has_field($ATT_input) ? true : false;
-                $form_input        = $attendee_property ? 'ATT_' . $form_input : $form_input;
+                $form_input        = $attendee_property ? 'ATT_'.$form_input : $form_input;
         }
         // EEH_Debug_Tools::printr( $answer_cache_id, '$answer_cache_id', __FILE__, __LINE__ );
         // EEH_Debug_Tools::printr( $attendee_property, '$attendee_property', __FILE__, __LINE__ );
@@ -1121,7 +1120,7 @@ 
     ) {
         if (empty($input_value)) {
             // if the form input isn't marked as being required, then just return
-            if (! isset($this->_required_questions[$form_input]) || ! $this->_required_questions[$form_input]) {
+            if ( ! isset($this->_required_questions[$form_input]) || ! $this->_required_questions[$form_input]) {
                 return true;
             }
             switch ($form_input) {
@@ -1207,7 +1206,7 @@ 
             'FHEE__EE_SPCO_Reg_Step_Attendee_Information__merge_address_details_with_critical_attendee_details',
             false
         )) {
-            $address_details           = array(
+            $address_details = array(
                 'ATT_address',
                 'ATT_address2',
                 'ATT_city',
@@ -1219,7 +1218,7 @@ 
             $critical_attendee_details = array_merge($critical_attendee_details, $address_details);
         }
         foreach ($critical_attendee_details as $critical_attendee_detail) {
-            if (! isset($attendee_data[$critical_attendee_detail])
+            if ( ! isset($attendee_data[$critical_attendee_detail])
                 || empty($attendee_data[$critical_attendee_detail])
             ) {
                 $attendee_data[$critical_attendee_detail] = $this->checkout->primary_attendee_obj->get(

modules/single_page_checkout/reg_steps/payment_options/EE_SPCO_Reg_Step_Payment_Options.class.php

Doc Comments +13 added lines, -13 removed lines

@@ -142,7 +142,7 @@ 
 
 
     /**
-     * @return null
+     * @return EE_Line_Item_Display
      */
     public function line_item_display()
     {
@@ -151,7 +151,7 @@ 
 
 
     /**
-     * @param null $line_item_display
+     * @param EE_Line_Item_Display $line_item_display
      */
     public function set_line_item_display($line_item_display)
     {
@@ -849,7 +849,7 @@ 
      *    _apply_registration_payments_to_amount_owing
      *
      * @access protected
-     * @param array $registrations
+     * @param EE_Base_Class[] $registrations
      */
     protected function _apply_registration_payments_to_amount_owing(array $registrations)
     {
@@ -1122,7 +1122,7 @@ 
      * get_billing_form_html_for_payment_method
      *
      * @access public
-     * @return string
+     * @return boolean
      * @throws \EE_Error
      */
     public function get_billing_form_html_for_payment_method()
@@ -1186,7 +1186,7 @@ 
      *
      * @access private
      * @param EE_Payment_Method $payment_method
-     * @return \EE_Billing_Info_Form|\EE_Form_Section_HTML
+     * @return EE_Billing_Info_Form
      * @throws \EE_Error
      */
     private function _get_billing_form_for_payment_method(EE_Payment_Method $payment_method)
@@ -1290,7 +1290,7 @@ 
      * switch_payment_method
      *
      * @access public
-     * @return string
+     * @return boolean
      * @throws \EE_Error
      */
     public function switch_payment_method()
@@ -1545,7 +1545,7 @@ 
     /**
      * process_reg_step
      *
-     * @return boolean
+     * @return null|boolean
      * @throws \EE_Error
      */
     public function process_reg_step()
@@ -1671,7 +1671,7 @@ 
      *    update_reg_step
      *    this is the final step after a user  revisits the site to retry a payment
      *
-     * @return boolean
+     * @return null|boolean
      * @throws \EE_Error
      */
     public function update_reg_step()
@@ -2084,7 +2084,7 @@ 
      *
      * @access    private
      * @type    EE_Payment_Method $payment_method
-     * @return    mixed    EE_Payment | boolean
+     * @return    EE_Payment|null    EE_Payment | boolean
      * @throws \EE_Error
      */
     private function _attempt_payment(EE_Payment_Method $payment_method)
@@ -2215,7 +2215,7 @@ 
      * _post_payment_processing
      *
      * @access private
-     * @param EE_Payment|bool $payment
+     * @param EE_Payment $payment
      * @return bool
      * @throws \EE_Error
      */
@@ -2406,7 +2406,7 @@ 
      *        or present the payment options again
      *
      * @access private
-     * @return EE_Payment | FALSE
+     * @return boolean | FALSE
      * @throws \EE_Error
      */
     public function process_gateway_response()
@@ -2538,8 +2538,8 @@ 
      * _redirect_wayward_request
      *
      * @access private
-     * @param \EE_Registration|null $primary_registrant
-     * @return bool
+     * @param EE_Registration $primary_registrant
+     * @return false|null
      * @throws \EE_Error
      */
     private function _redirect_wayward_request(EE_Registration $primary_registrant)

Indentation +2711 added lines, -2711 removed lines

@@ -1,5 +1,5 @@ 
 <?php if (! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -15,2716 +15,2716 @@ 
 class EE_SPCO_Reg_Step_Payment_Options extends EE_SPCO_Reg_Step
 {
 
-    /**
-     * @access protected
-     * @var EE_Line_Item_Display $Line_Item_Display
-     */
-    protected $line_item_display;
-
-    /**
-     * @access protected
-     * @var boolean $handle_IPN_in_this_request
-     */
-    protected $handle_IPN_in_this_request = false;
-
-
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        add_filter(
-            'FHEE__SPCO__EE_Line_Item_Filter_Collection',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'add_spco_line_item_filters')
-        );
-        add_action(
-            'wp_ajax_switch_spco_billing_form',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
-        );
-        add_action(
-            'wp_ajax_nopriv_switch_spco_billing_form',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
-        );
-        add_action('wp_ajax_save_payer_details', array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details'));
-        add_action(
-            'wp_ajax_nopriv_save_payer_details',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details')
-        );
-        add_action(
-            'wp_ajax_get_transaction_details_for_gateways',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
-        );
-        add_action(
-            'wp_ajax_nopriv_get_transaction_details_for_gateways',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
-        );
-        add_filter(
-            'FHEE__EED_Recaptcha___bypass_recaptcha__bypass_request_params_array',
-            array('EE_SPCO_Reg_Step_Payment_Options', 'bypass_recaptcha_for_load_payment_method'),
-            10,
-            1
-        );
-    }
-
-
-    /**
-     *    ajax switch_spco_billing_form
-     *
-     * @throws \EE_Error
-     */
-    public static function switch_spco_billing_form()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('switch_payment_method');
-    }
-
-
-    /**
-     *    ajax save_payer_details
-     *
-     * @throws \EE_Error
-     */
-    public static function save_payer_details()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('save_payer_details_via_ajax');
-    }
-
-
-    /**
-     *    ajax get_transaction_details
-     *
-     * @throws \EE_Error
-     */
-    public static function get_transaction_details()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('get_transaction_details_for_gateways');
-    }
-
-
-    /**
-     * bypass_recaptcha_for_load_payment_method
-     *
-     * @access public
-     * @return array
-     */
-    public static function bypass_recaptcha_for_load_payment_method()
-    {
-        return array(
-            'EESID'  => EE_Registry::instance()->SSN->id(),
-            'step'   => 'payment_options',
-            'action' => 'spco_billing_form',
-        );
-    }
-
-
-    /**
-     *    class constructor
-     *
-     * @access    public
-     * @param    EE_Checkout $checkout
-     */
-    public function __construct(EE_Checkout $checkout)
-    {
-        $this->_slug     = 'payment_options';
-        $this->_name     = __('Payment Options', 'event_espresso');
-        $this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'payment_options_main.template.php';
-        $this->checkout  = $checkout;
-        $this->_reset_success_message();
-        $this->set_instructions(
-            __(
-                'Please select a method of payment and provide any necessary billing information before proceeding.',
-                'event_espresso'
-            )
-        );
-    }
-
-
-    /**
-     * @return null
-     */
-    public function line_item_display()
-    {
-        return $this->line_item_display;
-    }
-
-
-    /**
-     * @param null $line_item_display
-     */
-    public function set_line_item_display($line_item_display)
-    {
-        $this->line_item_display = $line_item_display;
-    }
-
-
-    /**
-     * @return boolean
-     */
-    public function handle_IPN_in_this_request()
-    {
-        return $this->handle_IPN_in_this_request;
-    }
-
-
-    /**
-     * @param boolean $handle_IPN_in_this_request
-     */
-    public function set_handle_IPN_in_this_request($handle_IPN_in_this_request)
-    {
-        $this->handle_IPN_in_this_request = filter_var($handle_IPN_in_this_request, FILTER_VALIDATE_BOOLEAN);
-    }
-
-
-    /**
-     * translate_js_strings
-     *
-     * @return void
-     */
-    public function translate_js_strings()
-    {
-        EE_Registry::$i18n_js_strings['no_payment_method']      = __(
-            'Please select a method of payment in order to continue.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['invalid_payment_method'] = __(
-            'A valid method of payment could not be determined. Please refresh the page and try again.',
-            'event_espresso'
-        );
-        EE_Registry::$i18n_js_strings['forwarding_to_offsite']  = __(
-            'Forwarding to Secure Payment Provider.',
-            'event_espresso'
-        );
-    }
-
-
-    /**
-     * enqueue_styles_and_scripts
-     *
-     * @return void
-     */
-    public function enqueue_styles_and_scripts()
-    {
-        $transaction = $this->checkout->transaction;
-        //if the transaction isn't set or nothing is owed on it, don't enqueue any JS
-        if (! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
-            return;
-        }
-        foreach (
-            EEM_Payment_Method::instance()->get_all_for_transaction($transaction,
-                EEM_Payment_Method::scope_cart) as $payment_method
-        ) {
-            $type_obj = $payment_method->type_obj();
-            if ($type_obj instanceof EE_PMT_Base) {
-                $billing_form = $type_obj->generate_new_billing_form($transaction);
-                if ($billing_form instanceof EE_Form_Section_Proper) {
-                    $billing_form->enqueue_js();
-                }
-            }
-        }
-    }
-
-
-    /**
-     * initialize_reg_step
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function initialize_reg_step()
-    {
-        // TODO: if /when we implement donations, then this will need overriding
-        if (
-            // don't need payment options for:
-            // 	registrations made via the admin
-            // 	completed transactions
-            // 	overpaid transactions
-            // 	$ 0.00 transactions (no payment required)
-            ! $this->checkout->payment_required()
-            // but do NOT remove if current action being called belongs to this reg step
-            && ! is_callable(array($this, $this->checkout->action))
-            && ! $this->completed()
-        ) {
-            // and if so, then we no longer need the Payment Options step
-            if ($this->is_current_step()) {
-                $this->checkout->generate_reg_form = false;
-            }
-            $this->checkout->remove_reg_step($this->_slug);
-            // DEBUG LOG
-            //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
-            return false;
-        }
-        // load EEM_Payment_Method
-        EE_Registry::instance()->load_model('Payment_Method');
-        // get all active payment methods
-        $this->checkout->available_payment_methods = EEM_Payment_Method::instance()->get_all_for_transaction(
-            $this->checkout->transaction,
-            EEM_Payment_Method::scope_cart
-        );
-        return true;
-    }
-
-
-    /**
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    public function generate_reg_form()
-    {
-        // reset in case someone changes their mind
-        $this->_reset_selected_method_of_payment();
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'payments_closed';
-        $registrations_requiring_payment            = array();
-        $registrations_for_free_events              = array();
-        $registrations_requiring_pre_approval       = array();
-        $sold_out_events                            = array();
-        $insufficient_spaces_available              = array();
-        $no_payment_required                        = true;
-        // loop thru registrations to gather info
-        $registrations         = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
-        $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-            $registrations,
-            $this->checkout->revisit
-        );
-        foreach ($registrations as $REG_ID => $registration) {
-            /** @var $registration EE_Registration */
-            // has this registration lost it's space ?
-            if (isset($ejected_registrations[$REG_ID])) {
-                $insufficient_spaces_available[$registration->event()->ID()] = $registration->event();
-                continue;
-            }
-            // event requires admin approval
-            if ($registration->status_ID() === EEM_Registration::status_id_not_approved) {
-                // add event to list of events with pre-approval reg status
-                $registrations_requiring_pre_approval[$REG_ID] = $registration;
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_pre_approval',
-                    $registration->event(),
-                    $this
-                );
-                continue;
-            }
-            if (
-                // returning registrant
-                $this->checkout->revisit
-                // anything other than Approved
-                && $registration->status_ID() !== EEM_Registration::status_id_approved
-                && (
-                    $registration->event()->is_sold_out()
-                    || $registration->event()->is_sold_out(true)
-                )
-            ) {
-                // add event to list of events that are sold out
-                $sold_out_events[$registration->event()->ID()] = $registration->event();
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__sold_out_event',
-                    $registration->event(),
-                    $this
-                );
-                continue;
-            }
-            // are they allowed to pay now and is there monies owing?
-            if ($registration->owes_monies_and_can_pay()) {
-                $registrations_requiring_payment[$REG_ID] = $registration;
-                do_action(
-                    'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_payment',
-                    $registration->event(),
-                    $this
-                );
-            } else if (
-                ! $this->checkout->revisit
-                && $registration->status_ID() !== EEM_Registration::status_id_not_approved
-                && $registration->ticket()->is_free()
-            ) {
-                $registrations_for_free_events[$registration->event()->ID()] = $registration;
-            }
-        }
-        $subsections = array();
-        // now decide which template to load
-        if (! empty($sold_out_events)) {
-            $subsections['sold_out_events'] = $this->_sold_out_events($sold_out_events);
-        }
-        if (! empty($insufficient_spaces_available)) {
-            $subsections['insufficient_space'] = $this->_insufficient_spaces_available(
-                $insufficient_spaces_available
-            );
-        }
-        if (! empty($registrations_requiring_pre_approval)) {
-            $subsections['registrations_requiring_pre_approval'] = $this->_registrations_requiring_pre_approval(
-                $registrations_requiring_pre_approval
-            );
-        }
-        if (! empty($registrations_for_free_events)) {
-            $subsections['no_payment_required'] = $this->_no_payment_required($registrations_for_free_events);
-        }
-        if (! empty($registrations_requiring_payment)) {
-            if ($this->checkout->amount_owing > 0) {
-                // autoload Line_Item_Display classes
-                EEH_Autoloader::register_line_item_filter_autoloaders();
-                $line_item_filter_processor = new EE_Line_Item_Filter_Processor(
-                    apply_filters(
-                        'FHEE__SPCO__EE_Line_Item_Filter_Collection',
-                        new EE_Line_Item_Filter_Collection()
-                    ),
-                    $this->checkout->cart->get_grand_total()
-                );
-                /** @var EE_Line_Item $filtered_line_item_tree */
-                $filtered_line_item_tree = $line_item_filter_processor->process();
-                EEH_Autoloader::register_line_item_display_autoloaders();
-                $this->set_line_item_display(new EE_Line_Item_Display('spco'));
-                $subsections['payment_options'] = $this->_display_payment_options(
-                    $this->line_item_display->display_line_item(
-                        $filtered_line_item_tree,
-                        array('registrations' => $registrations)
-                    )
-                );
-                $this->checkout->amount_owing   = $filtered_line_item_tree->total();
-                $this->_apply_registration_payments_to_amount_owing($registrations);
-            }
-            $no_payment_required = false;
-        } else {
-            $this->_hide_reg_step_submit_button_if_revisit();
-        }
-        $this->_save_selected_method_of_payment();
-
-        $subsections['default_hidden_inputs'] = $this->reg_step_hidden_inputs();
-        $subsections['extra_hidden_inputs']   = $this->_extra_hidden_inputs($no_payment_required);
-
-        return new EE_Form_Section_Proper(
-            array(
-                'name'            => $this->reg_form_name(),
-                'html_id'         => $this->reg_form_name(),
-                'subsections'     => $subsections,
-                'layout_strategy' => new EE_No_Layout(),
-            )
-        );
-    }
-
-
-    /**
-     * add line item filters required for this reg step
-     * these filters are applied via this line in EE_SPCO_Reg_Step_Payment_Options::set_hooks():
-     *        add_filter( 'FHEE__SPCO__EE_Line_Item_Filter_Collection', array( 'EE_SPCO_Reg_Step_Payment_Options',
-     *        'add_spco_line_item_filters' ) ); so any code that wants to use the same set of filters during the
-     *        payment options reg step, can apply these filters via the following: apply_filters(
-     *        'FHEE__SPCO__EE_Line_Item_Filter_Collection', new EE_Line_Item_Filter_Collection() ) or to an existing
-     *        filter collection by passing that instead of instantiating a new collection
-     *
-     * @param \EE_Line_Item_Filter_Collection $line_item_filter_collection
-     * @return \EE_Line_Item_Filter_Collection
-     * @throws \EE_Error
-     */
-    public static function add_spco_line_item_filters(EE_Line_Item_Filter_Collection $line_item_filter_collection)
-    {
-        if (! EE_Registry::instance()->SSN instanceof EE_Session) {
-            return $line_item_filter_collection;
-        }
-        if (! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
-            return $line_item_filter_collection;
-        }
-        if (! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
-            return $line_item_filter_collection;
-        }
-        $line_item_filter_collection->add(
-            new EE_Billable_Line_Item_Filter(
-                EE_SPCO_Reg_Step_Payment_Options::remove_ejected_registrations(
-                    EE_Registry::instance()->SSN->checkout()->transaction->registrations(
-                        EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
-                    )
-                )
-            )
-        );
-        $line_item_filter_collection->add(new EE_Non_Zero_Line_Item_Filter());
-        return $line_item_filter_collection;
-    }
-
-
-    /**
-     * remove_ejected_registrations
-     * if a registrant has lost their potential space at an event due to lack of payment,
-     * then this method removes them from the list of registrations being paid for during this request
-     *
-     * @param \EE_Registration[] $registrations
-     * @return \EE_Registration[]
-     * @throws \EE_Error
-     */
-    public static function remove_ejected_registrations(array $registrations)
-    {
-        $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-            $registrations,
-            EE_Registry::instance()->SSN->checkout()->revisit
-        );
-        foreach ($registrations as $REG_ID => $registration) {
-            // has this registration lost it's space ?
-            if (isset($ejected_registrations[$REG_ID])) {
-                unset($registrations[$REG_ID]);
-                continue;
-            }
-        }
-        return $registrations;
-    }
-
-
-    /**
-     * find_registrations_that_lost_their_space
-     * If a registrant chooses an offline payment method like Invoice,
-     * then no space is reserved for them at the event until they fully pay fo that site
-     * (unless the event's default reg status is set to APPROVED)
-     * if a registrant then later returns to pay, but the number of spaces available has been reduced due to sales,
-     * then this method will determine which registrations have lost the ability to complete the reg process.
-     *
-     * @param \EE_Registration[] $registrations
-     * @param bool               $revisit
-     * @return array
-     * @throws \EE_Error
-     */
-    public static function find_registrations_that_lost_their_space(array $registrations, $revisit = false)
-    {
-        // registrations per event
-        $event_reg_count = array();
-        // spaces left per event
-        $event_spaces_remaining = array();
-        // tickets left sorted by ID
-        $tickets_remaining = array();
-        // registrations that have lost their space
-        $ejected_registrations = array();
-        foreach ($registrations as $REG_ID => $registration) {
-            if (
-                $registration->status_ID() === EEM_Registration::status_id_approved
-                || apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__find_registrations_that_lost_their_space__allow_reg_payment',
-                    false,
-                    $registration,
-                    $revisit
-                )
-            ) {
-                continue;
-            }
-            $EVT_ID = $registration->event_ID();
-            $ticket = $registration->ticket();
-            if (! isset($tickets_remaining[$ticket->ID()])) {
-                $tickets_remaining[$ticket->ID()] = $ticket->remaining();
-            }
-            if ($tickets_remaining[$ticket->ID()] > 0) {
-                if (! isset($event_reg_count[$EVT_ID])) {
-                    $event_reg_count[$EVT_ID] = 0;
-                }
-                $event_reg_count[$EVT_ID]++;
-                if (! isset($event_spaces_remaining[$EVT_ID])) {
-                    $event_spaces_remaining[$EVT_ID] = $registration->event()->spaces_remaining_for_sale();
-                }
-            }
-            if (
-                $revisit
-                && (
-                    $tickets_remaining[$ticket->ID()] === 0
-                    || $event_reg_count[$EVT_ID] > $event_spaces_remaining[$EVT_ID]
-                )
-            ) {
-                $ejected_registrations[$REG_ID] = $registration->event();
-                if ($registration->status_ID() !== EEM_Registration::status_id_wait_list) {
-                    /** @type EE_Registration_Processor $registration_processor */
-                    $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-                    // at this point, we should have enough details about the registrant to consider the registration NOT incomplete
-                    $registration_processor->manually_update_registration_status(
-                        $registration,
-                        EEM_Registration::status_id_wait_list
-                    );
-                }
-
-            }
-        }
-        return $ejected_registrations;
-    }
-
-
-    /**
-     * _hide_reg_step_submit_button
-     * removes the html for the reg step submit button
-     * by replacing it with an empty string via filter callback
-     *
-     * @return void
-     */
-    protected function _adjust_registration_status_if_event_old_sold()
-    {
-    }
-
-
-    /**
-     * _hide_reg_step_submit_button
-     * removes the html for the reg step submit button
-     * by replacing it with an empty string via filter callback
-     *
-     * @return void
-     */
-    protected function _hide_reg_step_submit_button_if_revisit()
-    {
-        if ($this->checkout->revisit) {
-            add_filter('FHEE__EE_SPCO_Reg_Step__reg_step_submit_button__sbmt_btn_html', '__return_empty_string');
-        }
-    }
-
-
-    /**
-     * sold_out_events
-     * displays notices regarding events that have sold out since hte registrant first signed up
-     *
-     * @param \EE_Event[] $sold_out_events_array
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _sold_out_events($sold_out_events_array = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'events_sold_out';
-        $sold_out_events                            = '';
-        foreach ($sold_out_events_array as $sold_out_event) {
-            $sold_out_events .= EEH_HTML::li(
-                EEH_HTML::span('  ' . $sold_out_event->name(), '',
-                    'dashicons dashicons-marker ee-icon-size-16 pink-text')
-            );
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'sold_out_events.template.php',
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
-                            array(
-                                'sold_out_events'     => $sold_out_events,
-                                'sold_out_events_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__sold_out_events_msg',
-                                    sprintf(
-                                        __('It appears that the event you were about to make a payment for has sold out since you first registered. If you have already made a partial payment towards this event, please contact the event administrator for a refund.%3$s%3$s%1$sPlease note that availability can change at any time due to cancellations, so please check back again later if registration for this event(s) is important to you.%2$s',
-                                            'event_espresso'),
-                                        '<strong>',
-                                        '</strong>',
-                                        '<br />'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _insufficient_spaces_available
-     * displays notices regarding events that do not have enough remaining spaces
-     * to satisfy the current number of registrations looking to pay
-     *
-     * @param \EE_Event[] $insufficient_spaces_events_array
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _insufficient_spaces_available($insufficient_spaces_events_array = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'invoice';
-        $insufficient_space_events                  = '';
-        foreach ($insufficient_spaces_events_array as $event) {
-            if ($event instanceof EE_Event) {
-                $insufficient_space_events .= EEH_HTML::li(
-                    EEH_HTML::span(' ' . $event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
-                );
-            }
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'subsections'     => array(
-                    'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
-                    'extra_hidden_inputs'   => $this->_extra_hidden_inputs(),
-                ),
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'sold_out_events.template.php',
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__template_args',
-                            array(
-                                'sold_out_events'     => $insufficient_space_events,
-                                'sold_out_events_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__insufficient_space_msg',
-                                    __(
-                                        'It appears that the event you were about to make a payment for has sold additional tickets since you first registered, and there are no longer enough spaces left to accommodate your selections. You may continue to pay and secure the available space(s) remaining, or simply cancel if you no longer wish to purchase. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
-                                        'event_espresso'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * registrations_requiring_pre_approval
-     *
-     * @param array $registrations_requiring_pre_approval
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _registrations_requiring_pre_approval($registrations_requiring_pre_approval = array())
-    {
-        $events_requiring_pre_approval = '';
-        foreach ($registrations_requiring_pre_approval as $registration) {
-            if ($registration instanceof EE_Registration && $registration->event() instanceof EE_Event) {
-                $events_requiring_pre_approval[$registration->event()->ID()] = EEH_HTML::li(
-                    EEH_HTML::span(
-                        '',
-                        '',
-                        'dashicons dashicons-marker ee-icon-size-16 orange-text'
-                    )
-                    . EEH_HTML::span($registration->event()->name(), '', 'orange-text')
-                );
-            }
-        }
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'events_requiring_pre_approval.template.php', // layout_template
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
-                            array(
-                                'events_requiring_pre_approval'     => implode('', $events_requiring_pre_approval),
-                                'events_requiring_pre_approval_msg' => apply_filters(
-                                    'FHEE__EE_SPCO_Reg_Step_Payment_Options___events_requiring_pre_approval__events_requiring_pre_approval_msg',
-                                    __(
-                                        'The following events do not require payment at this time and will not be billed during this transaction. Billing will only occur after the attendee has been approved by the event organizer. You will be notified when your registration has been processed. If this is a free event, then no billing will occur.',
-                                        'event_espresso'
-                                    )
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _no_payment_required
-     *
-     * @param \EE_Event[] $registrations_for_free_events
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _no_payment_required($registrations_for_free_events = array())
-    {
-        // set some defaults
-        $this->checkout->selected_method_of_payment = 'no_payment_required';
-        // generate no_payment_required form
-        return new EE_Form_Section_Proper(
-            array(
-                'layout_strategy' => new EE_Template_Layout(
-                    array(
-                        'layout_template_file' => SPCO_REG_STEPS_PATH
-                                                  . $this->_slug
-                                                  . DS
-                                                  . 'no_payment_required.template.php', // layout_template
-                        'template_args'        => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___no_payment_required__template_args',
-                            array(
-                                'revisit'                       => $this->checkout->revisit,
-                                'registrations'                 => array(),
-                                'ticket_count'                  => array(),
-                                'registrations_for_free_events' => $registrations_for_free_events,
-                                'no_payment_required_msg'       => EEH_HTML::p(
-                                    __('This is a free event, so no billing will occur.', 'event_espresso')
-                                ),
-                            )
-                        ),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * _display_payment_options
-     *
-     * @param string $transaction_details
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _display_payment_options($transaction_details = '')
-    {
-        // has method_of_payment been set by no-js user?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment();
-        // build payment options form
-        return apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__payment_options_form',
-            new EE_Form_Section_Proper(
-                array(
-                    'subsections'     => array(
-                        'before_payment_options' => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__before_payment_options',
-                            new EE_Form_Section_Proper(
-                                array('layout_strategy' => new EE_Div_Per_Section_Layout())
-                            )
-                        ),
-                        'payment_options'        => $this->_setup_payment_options(),
-                        'after_payment_options'  => apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__after_payment_options',
-                            new EE_Form_Section_Proper(
-                                array('layout_strategy' => new EE_Div_Per_Section_Layout())
-                            )
-                        ),
-                    ),
-                    'layout_strategy' => new EE_Template_Layout(
-                        array(
-                            'layout_template_file' => $this->_template,
-                            'template_args'        => apply_filters(
-                                'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__template_args',
-                                array(
-                                    'reg_count'                 => $this->line_item_display->total_items(),
-                                    'transaction_details'       => $transaction_details,
-                                    'available_payment_methods' => array(),
-                                )
-                            ),
-                        )
-                    ),
-                )
-            )
-        );
-    }
-
-
-    /**
-     * _extra_hidden_inputs
-     *
-     * @param bool $no_payment_required
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _extra_hidden_inputs($no_payment_required = true)
-    {
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'ee-' . $this->slug() . '-extra-hidden-inputs',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    'spco_no_payment_required' => new EE_Hidden_Input(
-                        array(
-                            'normalization_strategy' => new EE_Boolean_Normalization(),
-                            'html_name'              => 'spco_no_payment_required',
-                            'html_id'                => 'spco-no-payment-required-payment_options',
-                            'default'                => $no_payment_required,
-                        )
-                    ),
-                    'spco_transaction_id'      => new EE_Fixed_Hidden_Input(
-                        array(
-                            'normalization_strategy' => new EE_Int_Normalization(),
-                            'html_name'              => 'spco_transaction_id',
-                            'html_id'                => 'spco-transaction-id',
-                            'default'                => $this->checkout->transaction->ID(),
-                        )
-                    ),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     *    _apply_registration_payments_to_amount_owing
-     *
-     * @access protected
-     * @param array $registrations
-     */
-    protected function _apply_registration_payments_to_amount_owing(array $registrations)
-    {
-        $payments = array();
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration && $registration->owes_monies_and_can_pay()) {
-                $payments += $registration->registration_payments();
-            }
-        }
-        if (! empty($payments)) {
-            foreach ($payments as $payment) {
-                if ($payment instanceof EE_Registration_Payment) {
-                    $this->checkout->amount_owing -= $payment->amount();
-                }
-            }
-        }
-    }
-
-
-    /**
-     *    _reset_selected_method_of_payment
-     *
-     * @access    private
-     * @param    bool $force_reset
-     * @return    void
-     */
-    private function _reset_selected_method_of_payment($force_reset = false)
-    {
-        $reset_payment_method = $force_reset
-            ? true
-            : sanitize_text_field(EE_Registry::instance()->REQ->get('reset_payment_method', false));
-        if ($reset_payment_method) {
-            $this->checkout->selected_method_of_payment = null;
-            $this->checkout->payment_method             = null;
-            $this->checkout->billing_form               = null;
-            $this->_save_selected_method_of_payment();
-        }
-    }
-
-
-    /**
-     * _save_selected_method_of_payment
-     * stores the selected_method_of_payment in the session
-     * so that it's available for all subsequent requests including AJAX
-     *
-     * @access        private
-     * @param string $selected_method_of_payment
-     * @return  void
-     */
-    private function _save_selected_method_of_payment($selected_method_of_payment = '')
-    {
-        $selected_method_of_payment = ! empty($selected_method_of_payment)
-            ? $selected_method_of_payment
-            : $this->checkout->selected_method_of_payment;
-        EE_Registry::instance()->SSN->set_session_data(
-            array('selected_method_of_payment' => $selected_method_of_payment)
-        );
-    }
-
-
-    /**
-     * _setup_payment_options
-     *
-     * @return \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    public function _setup_payment_options()
-    {
-        // load payment method classes
-        $this->checkout->available_payment_methods = $this->_get_available_payment_methods();
-        // switch up header depending on number of available payment methods
-        $payment_method_header     = count($this->checkout->available_payment_methods) > 1
-            ? apply_filters(
-                'FHEE__registration_page_payment_options__method_of_payment_hdr',
-                __('Please Select Your Method of Payment', 'event_espresso')
-            )
-            : apply_filters(
-                'FHEE__registration_page_payment_options__method_of_payment_hdr',
-                __('Method of Payment', 'event_espresso')
-            );
-        $available_payment_methods = array(
-            // display the "Payment Method" header
-            'payment_method_header' => new EE_Form_Section_HTML(
-                EEH_HTML::h4($payment_method_header, 'method-of-payment-hdr')
-            ),
-        );
-        // the list of actual payment methods ( invoice, paypal, etc ) in a  ( slug => HTML )  format
-        $available_payment_method_options = array();
-        $default_payment_method_option    = array();
-        // additional instructions to be displayed and hidden below payment methods (adding a clearing div to start)
-        $payment_methods_billing_info = array(
-            new EE_Form_Section_HTML(
-                EEH_HTML::div('<br />', '', '', 'clear:both;')
-            ),
-        );
-        // loop through payment methods
-        foreach ($this->checkout->available_payment_methods as $payment_method) {
-            if ($payment_method instanceof EE_Payment_Method) {
-                $payment_method_button = EEH_HTML::img(
-                    $payment_method->button_url(),
-                    $payment_method->name(),
-                    'spco-payment-method-' . $payment_method->slug() . '-btn-img',
-                    'spco-payment-method-btn-img'
-                );
-                // check if any payment methods are set as default
-                // if payment method is already selected OR nothing is selected and this payment method should be open_by_default
-                if (
-                    ($this->checkout->selected_method_of_payment === $payment_method->slug())
-                    || (! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
-                ) {
-                    $this->checkout->selected_method_of_payment = $payment_method->slug();
-                    $this->_save_selected_method_of_payment();
-                    $default_payment_method_option[$payment_method->slug()] = $payment_method_button;
-                } else {
-                    $available_payment_method_options[$payment_method->slug()] = $payment_method_button;
-                }
-                $payment_methods_billing_info[$payment_method->slug()
-                                              . '-info'] = $this->_payment_method_billing_info(
-                    $payment_method
-                );
-            }
-        }
-        // prepend available_payment_method_options with default_payment_method_option so that it appears first in list of PMs
-        $available_payment_method_options = $default_payment_method_option + $available_payment_method_options;
-        // now generate the actual form  inputs
-        $available_payment_methods['available_payment_methods'] = $this->_available_payment_method_inputs(
-            $available_payment_method_options
-        );
-        $available_payment_methods                              += $payment_methods_billing_info;
-        // build the available payment methods form
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'spco-available-methods-of-payment-dv',
-                'subsections'     => $available_payment_methods,
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-            )
-        );
-    }
-
-
-    /**
-     * _get_available_payment_methods
-     *
-     * @return EE_Payment_Method[]
-     */
-    protected function _get_available_payment_methods()
-    {
-        if (! empty($this->checkout->available_payment_methods)) {
-            return $this->checkout->available_payment_methods;
-        }
-        $available_payment_methods = array();
-        // load EEM_Payment_Method
-        EE_Registry::instance()->load_model('Payment_Method');
-        /** @type EEM_Payment_Method $EEM_Payment_Method */
-        $EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
-        // get all active payment methods
-        $payment_methods = $EEM_Payment_Method->get_all_for_transaction(
-            $this->checkout->transaction,
-            EEM_Payment_Method::scope_cart
-        );
-        foreach ($payment_methods as $payment_method) {
-            if ($payment_method instanceof EE_Payment_Method) {
-                $available_payment_methods[$payment_method->slug()] = $payment_method;
-            }
-        }
-        return $available_payment_methods;
-    }
-
-
-    /**
-     *    _available_payment_method_inputs
-     *
-     * @access    private
-     * @param    array $available_payment_method_options
-     * @return    \EE_Form_Section_Proper
-     */
-    private function _available_payment_method_inputs($available_payment_method_options = array())
-    {
-        // generate inputs
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'ee-available-payment-method-inputs',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    '' => new EE_Radio_Button_Input (
-                        $available_payment_method_options,
-                        array(
-                            'html_name'          => 'selected_method_of_payment',
-                            'html_class'         => 'spco-payment-method',
-                            'default'            => $this->checkout->selected_method_of_payment,
-                            'label_size'         => 11,
-                            'enforce_label_size' => true,
-                        )
-                    ),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     *    _payment_method_billing_info
-     *
-     * @access    private
-     * @param    EE_Payment_Method $payment_method
-     * @return    \EE_Form_Section_Proper
-     * @throws \EE_Error
-     */
-    private function _payment_method_billing_info(EE_Payment_Method $payment_method)
-    {
-        $currently_selected = $this->checkout->selected_method_of_payment === $payment_method->slug()
-            ? true
-            : false;
-        // generate the billing form for payment method
-        $billing_form                 = $currently_selected
-            ? $this->_get_billing_form_for_payment_method($payment_method)
-            : new EE_Form_Section_HTML();
-        $this->checkout->billing_form = $currently_selected
-            ? $billing_form
-            : $this->checkout->billing_form;
-        // it's all in the details
-        $info_html = EEH_HTML::h3(
-            __('Important information regarding your payment', 'event_espresso'),
-            '',
-            'spco-payment-method-hdr'
-        );
-        // add some info regarding the step, either from what's saved in the admin,
-        // or a default string depending on whether the PM has a billing form or not
-        if ($payment_method->description()) {
-            $payment_method_info = $payment_method->description();
-        } elseif ($billing_form instanceof EE_Billing_Info_Form) {
-            $payment_method_info = sprintf(
-                __(
-                    'Please provide the following billing information, then click the "%1$s" button below in order to proceed.',
-                    'event_espresso'
-                ),
-                $this->submit_button_text()
-            );
-        } else {
-            $payment_method_info = sprintf(
-                __('Please click the "%1$s" button below in order to proceed.', 'event_espresso'),
-                $this->submit_button_text()
-            );
-        }
-        $info_html .= EEH_HTML::p(
-            apply_filters(
-                'FHEE__EE_SPCO_Reg_Step_Payment_Options___payment_method_billing_info__payment_method_info',
-                $payment_method_info
-            ),
-            '',
-            'spco-payment-method-desc ee-attention'
-        );
-        return new EE_Form_Section_Proper(
-            array(
-                'html_id'         => 'spco-payment-method-info-' . $payment_method->slug(),
-                'html_class'      => 'spco-payment-method-info-dv',
-                // only display the selected or default PM
-                'html_style'      => $currently_selected ? '' : 'display:none;',
-                'layout_strategy' => new EE_Div_Per_Section_Layout(),
-                'subsections'     => array(
-                    'info'         => new EE_Form_Section_HTML($info_html),
-                    'billing_form' => $currently_selected ? $billing_form : new EE_Form_Section_HTML(),
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * get_billing_form_html_for_payment_method
-     *
-     * @access public
-     * @return string
-     * @throws \EE_Error
-     */
-    public function get_billing_form_html_for_payment_method()
-    {
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        $this->checkout->payment_method             = $this->_get_payment_method_for_selected_method_of_payment();
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
-            return false;
-        }
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-            false
-        )) {
-            EE_Error::add_success(
-                apply_filters(
-                    'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                    sprintf(
-                        __(
-                            'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                            'event_espresso'
-                        ),
-                        $this->checkout->payment_method->name()
-                    )
-                )
-            );
-        }
-        // now generate billing form for selected method of payment
-        $payment_method_billing_form = $this->_get_billing_form_for_payment_method($this->checkout->payment_method);
-        // fill form with attendee info if applicable
-        if (
-            $payment_method_billing_form instanceof EE_Billing_Attendee_Info_Form
-            && $this->checkout->transaction_has_primary_registrant()
-        ) {
-            $payment_method_billing_form->populate_from_attendee(
-                $this->checkout->transaction->primary_registration()->attendee()
-            );
-        }
-        // and debug content
-        if (
-            $payment_method_billing_form instanceof EE_Billing_Info_Form
-            && $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
-        ) {
-            $payment_method_billing_form = $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
-                $payment_method_billing_form
-            );
-        }
-        $billing_info = $payment_method_billing_form instanceof EE_Form_Section_Proper
-            ? $payment_method_billing_form->get_html()
-            : '';
-        $this->checkout->json_response->set_return_data(array('payment_method_info' => $billing_info));
-        // localize validation rules for main form
-        $this->checkout->current_step->reg_form->localize_validation_rules();
-        $this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
-        return true;
-    }
-
-
-    /**
-     * _get_billing_form_for_payment_method
-     *
-     * @access private
-     * @param EE_Payment_Method $payment_method
-     * @return \EE_Billing_Info_Form|\EE_Form_Section_HTML
-     * @throws \EE_Error
-     */
-    private function _get_billing_form_for_payment_method(EE_Payment_Method $payment_method)
-    {
-        $billing_form = $payment_method->type_obj()->billing_form(
-            $this->checkout->transaction,
-            array('amount_owing' => $this->checkout->amount_owing)
-        );
-        if ($billing_form instanceof EE_Billing_Info_Form) {
-            if (
-                apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-                    false
-                )
-                && EE_Registry::instance()->REQ->is_set('payment_method')
-            ) {
-                EE_Error::add_success(
-                    apply_filters(
-                        'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                        sprintf(
-                            __(
-                                'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                                'event_espresso'
-                            ),
-                            $payment_method->name()
-                        )
-                    )
-                );
-            }
-            return apply_filters(
-                'FHEE__EE_SPCO_Reg_Step_Payment_Options___get_billing_form_for_payment_method__billing_form',
-                $billing_form,
-                $payment_method
-            );
-        }
-        // no actual billing form, so return empty HTML form section
-        return new EE_Form_Section_HTML();
-    }
-
-
-    /**
-     * _get_selected_method_of_payment
-     *
-     * @access private
-     * @param boolean $required whether to throw an error if the "selected_method_of_payment"
-     *                          is not found in the incoming request
-     * @param string  $request_param
-     * @return NULL|string
-     * @throws \EE_Error
-     */
-    private function _get_selected_method_of_payment(
-        $required = false,
-        $request_param = 'selected_method_of_payment'
-    ) {
-        // is selected_method_of_payment set in the request ?
-        $selected_method_of_payment = EE_Registry::instance()->REQ->get($request_param, false);
-        if ($selected_method_of_payment) {
-            // sanitize it
-            $selected_method_of_payment = is_array($selected_method_of_payment)
-                ? array_shift($selected_method_of_payment)
-                : $selected_method_of_payment;
-            $selected_method_of_payment = sanitize_text_field($selected_method_of_payment);
-            // store it in the session so that it's available for all subsequent requests including AJAX
-            $this->_save_selected_method_of_payment($selected_method_of_payment);
-        } else {
-            // or is is set in the session ?
-            $selected_method_of_payment = EE_Registry::instance()->SSN->get_session_data(
-                'selected_method_of_payment'
-            );
-        }
-        // do ya really really gotta have it?
-        if (empty($selected_method_of_payment) && $required) {
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'The selected method of payment could not be determined.%sPlease ensure that you have selected one before proceeding.%sIf you continue to experience difficulties, then refresh your browser and try again, or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        return $selected_method_of_payment;
-    }
-
-
-
-
-
-
-    /********************************************************************************************************/
-    /***********************************  SWITCH PAYMENT METHOD  ************************************/
-    /********************************************************************************************************/
-    /**
-     * switch_payment_method
-     *
-     * @access public
-     * @return string
-     * @throws \EE_Error
-     */
-    public function switch_payment_method()
-    {
-        if (! $this->_verify_payment_method_is_set()) {
-            return false;
-        }
-        if (apply_filters(
-            'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
-            false
-        )) {
-            EE_Error::add_success(
-                apply_filters(
-                    'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
-                    sprintf(
-                        __(
-                            'You have selected "%s" as your method of payment. Please note the important payment information below.',
-                            'event_espresso'
-                        ),
-                        $this->checkout->payment_method->name()
-                    )
-                )
-            );
-        }
-        // generate billing form for selected method of payment if it hasn't been done already
-        if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-        }
-        // fill form with attendee info if applicable
-        if (
-        apply_filters(
-            'FHEE__populate_billing_form_fields_from_attendee',
-            (
-                $this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
-                && $this->checkout->transaction_has_primary_registrant()
-            ),
-            $this->checkout->billing_form,
-            $this->checkout->transaction
-        )
-        ) {
-            $this->checkout->billing_form->populate_from_attendee(
-                $this->checkout->transaction->primary_registration()->attendee()
-            );
-        }
-        // and debug content
-        if ($this->checkout->billing_form instanceof EE_Billing_Info_Form
-            && $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
-        ) {
-            $this->checkout->billing_form = $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
-                $this->checkout->billing_form
-            );
-        }
-        // get html and validation rules for form
-        if ($this->checkout->billing_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->json_response->set_return_data(
-                array('payment_method_info' => $this->checkout->billing_form->get_html())
-            );
-            // localize validation rules for main form
-            $this->checkout->billing_form->localize_validation_rules(true);
-            $this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
-        } else {
-            $this->checkout->json_response->set_return_data(array('payment_method_info' => ''));
-        }
-        //prevents advancement to next step
-        $this->checkout->continue_reg = false;
-        return true;
-    }
-
-
-    /**
-     * _verify_payment_method_is_set
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    protected function _verify_payment_method_is_set()
-    {
-        // generate billing form for selected method of payment if it hasn't been done already
-        if (empty($this->checkout->selected_method_of_payment)) {
-            // how have they chosen to pay?
-            $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        } else {
-            // choose your own adventure based on method_of_payment
-            switch ($this->checkout->selected_method_of_payment) {
-                case 'events_sold_out' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__sold_out_events_msg',
-                            __('It appears that the event you were about to make a payment for has sold out since this form first loaded. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso')
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                case 'payments_closed' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__payments_closed_msg',
-                            __('It appears that the event you were about to make a payment for is not accepting payments at this time. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso')
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                case 'no_payment_required' :
-                    EE_Error::add_attention(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__no_payment_required_msg',
-                            __('It appears that the event you were about to make a payment for does not require payment. Please contact the event administrator if you believe this is an error.',
-                                'event_espresso')
-                        ),
-                        __FILE__, __FUNCTION__, __LINE__
-                    );
-                    return false;
-                    break;
-                default:
-            }
-        }
-        // verify payment method
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
-            // get payment method for selected method of payment
-            $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment();
-        }
-        return $this->checkout->payment_method instanceof EE_Payment_Method ? true : false;
-    }
-
-
-
-    /********************************************************************************************************/
-    /***************************************  SAVE PAYER DETAILS  ****************************************/
-    /********************************************************************************************************/
-    /**
-     * save_payer_details_via_ajax
-     *
-     * @return void
-     * @throws \EE_Error
-     */
-    public function save_payer_details_via_ajax()
-    {
-        if (! $this->_verify_payment_method_is_set()) {
-            return;
-        }
-        // generate billing form for selected method of payment if it hasn't been done already
-        if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-        }
-        // generate primary attendee from payer info if applicable
-        if (! $this->checkout->transaction_has_primary_registrant()) {
-            $attendee = $this->_create_attendee_from_request_data();
-            if ($attendee instanceof EE_Attendee) {
-                foreach ($this->checkout->transaction->registrations() as $registration) {
-                    if ($registration->is_primary_registrant()) {
-                        $this->checkout->primary_attendee_obj = $attendee;
-                        $registration->_add_relation_to($attendee, 'Attendee');
-                        $registration->set_attendee_id($attendee->ID());
-                        $registration->update_cache_after_object_save('Attendee', $attendee);
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     * create_attendee_from_request_data
-     * uses info from alternate GET or POST data (such as AJAX) to create a new attendee
-     *
-     * @return \EE_Attendee
-     * @throws \EE_Error
-     */
-    protected function _create_attendee_from_request_data()
-    {
-        // get State ID
-        $STA_ID = ! empty($_REQUEST['state']) ? sanitize_text_field($_REQUEST['state']) : '';
-        if (! empty($STA_ID)) {
-            // can we get state object from name ?
-            EE_Registry::instance()->load_model('State');
-            $state  = EEM_State::instance()->get_col(array(array('STA_name' => $STA_ID), 'limit' => 1), 'STA_ID');
-            $STA_ID = is_array($state) && ! empty($state) ? reset($state) : $STA_ID;
-        }
-        // get Country ISO
-        $CNT_ISO = ! empty($_REQUEST['country']) ? sanitize_text_field($_REQUEST['country']) : '';
-        if (! empty($CNT_ISO)) {
-            // can we get country object from name ?
-            EE_Registry::instance()->load_model('Country');
-            $country = EEM_Country::instance()->get_col(
-                array(array('CNT_name' => $CNT_ISO), 'limit' => 1),
-                'CNT_ISO'
-            );
-            $CNT_ISO = is_array($country) && ! empty($country) ? reset($country) : $CNT_ISO;
-        }
-        // grab attendee data
-        $attendee_data = array(
-            'ATT_fname'    => ! empty($_REQUEST['first_name']) ? sanitize_text_field($_REQUEST['first_name']) : '',
-            'ATT_lname'    => ! empty($_REQUEST['last_name']) ? sanitize_text_field($_REQUEST['last_name']) : '',
-            'ATT_email'    => ! empty($_REQUEST['email']) ? sanitize_email($_REQUEST['email']) : '',
-            'ATT_address'  => ! empty($_REQUEST['address']) ? sanitize_text_field($_REQUEST['address']) : '',
-            'ATT_address2' => ! empty($_REQUEST['address2']) ? sanitize_text_field($_REQUEST['address2']) : '',
-            'ATT_city'     => ! empty($_REQUEST['city']) ? sanitize_text_field($_REQUEST['city']) : '',
-            'STA_ID'       => $STA_ID,
-            'CNT_ISO'      => $CNT_ISO,
-            'ATT_zip'      => ! empty($_REQUEST['zip']) ? sanitize_text_field($_REQUEST['zip']) : '',
-            'ATT_phone'    => ! empty($_REQUEST['phone']) ? sanitize_text_field($_REQUEST['phone']) : '',
-        );
-        // validate the email address since it is the most important piece of info
-        if (empty($attendee_data['ATT_email']) || $attendee_data['ATT_email'] !== $_REQUEST['email']) {
-            EE_Error::add_error(
-                __('An invalid email address was submitted.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        // does this attendee already exist in the db ? we're searching using a combination of first name, last name, AND email address
-        if (! empty($attendee_data['ATT_fname'])
-            && ! empty($attendee_data['ATT_lname'])
-            && ! empty($attendee_data['ATT_email'])
-        ) {
-            $existing_attendee = EE_Registry::instance()->LIB->EEM_Attendee->find_existing_attendee(
-                array(
-                    'ATT_fname' => $attendee_data['ATT_fname'],
-                    'ATT_lname' => $attendee_data['ATT_lname'],
-                    'ATT_email' => $attendee_data['ATT_email'],
-                )
-            );
-            if ($existing_attendee instanceof EE_Attendee) {
-                return $existing_attendee;
-            }
-        }
-        // no existing attendee? kk let's create a new one
-        // kinda lame, but we need a first and last name to create an attendee, so use the email address if those don't exist
-        $attendee_data['ATT_fname'] = ! empty($attendee_data['ATT_fname'])
-            ? $attendee_data['ATT_fname']
-            : $attendee_data['ATT_email'];
-        $attendee_data['ATT_lname'] = ! empty($attendee_data['ATT_lname'])
-            ? $attendee_data['ATT_lname']
-            : $attendee_data['ATT_email'];
-        return EE_Attendee::new_instance($attendee_data);
-    }
-
-
-
-    /********************************************************************************************************/
-    /****************************************  PROCESS REG STEP  *****************************************/
-    /********************************************************************************************************/
-    /**
-     * process_reg_step
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function process_reg_step()
-    {
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->checkout->transaction->is_free()
-            ? 'no_payment_required'
-            : $this->_get_selected_method_of_payment(true);
-        // choose your own adventure based on method_of_payment
-        switch ($this->checkout->selected_method_of_payment) {
-
-            case 'events_sold_out' :
-                $this->checkout->redirect     = true;
-                $this->checkout->redirect_url = $this->checkout->cancel_page_url;
-                $this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
-                // mark this reg step as completed
-                $this->set_completed();
-                return false;
-                break;
-
-            case 'payments_closed' :
-                if (apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__payments_closed__display_success',
-                    false
-                )) {
-                    EE_Error::add_success(
-                        __('no payment required at this time.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-                // mark this reg step as completed
-                $this->set_completed();
-                return true;
-                break;
-
-            case 'no_payment_required' :
-                if (apply_filters(
-                    'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__no_payment_required__display_success',
-                    false
-                )) {
-                    EE_Error::add_success(
-                        __('no payment required.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-                // mark this reg step as completed
-                $this->set_completed();
-                return true;
-                break;
-
-            default:
-                $registrations         = EE_Registry::instance()->SSN->checkout()->transaction->registrations(
-                    EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
-                );
-                $ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
-                    $registrations,
-                    EE_Registry::instance()->SSN->checkout()->revisit
-                );
-                // calculate difference between the two arrays
-                $registrations = array_diff($registrations, $ejected_registrations);
-                if (empty($registrations)) {
-                    $this->_redirect_because_event_sold_out();
-                    return false;
-                }
-                $payment_successful = $this->_process_payment();
-                if ($payment_successful) {
-                    $this->checkout->continue_reg = true;
-                    $this->_maybe_set_completed($this->checkout->payment_method);
-                } else {
-                    $this->checkout->continue_reg = false;
-                }
-                return $payment_successful;
-
-        }
-    }
-
-
-    /**
-     * _redirect_because_event_sold_out
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _redirect_because_event_sold_out()
-    {
-        $this->checkout->continue_reg = false;
-        // set redirect URL
-        $this->checkout->redirect_url = add_query_arg(
-            array('e_reg_url_link' => $this->checkout->reg_url_link),
-            $this->checkout->current_step->reg_step_url()
-        );
-        $this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
-    }
-
-
-    /**
-     * _maybe_set_completed
-     *
-     * @access protected
-     * @param \EE_Payment_Method $payment_method
-     * @return void
-     * @throws \EE_Error
-     */
-    protected function _maybe_set_completed(EE_Payment_Method $payment_method)
-    {
-        switch ($payment_method->type_obj()->payment_occurs()) {
-            case EE_PMT_Base::offsite :
-                break;
-            case EE_PMT_Base::onsite :
-            case EE_PMT_Base::offline :
-                // mark this reg step as completed
-                $this->set_completed();
-                break;
-        }
-    }
-
-
-    /**
-     *    update_reg_step
-     *    this is the final step after a user  revisits the site to retry a payment
-     *
-     * @return boolean
-     * @throws \EE_Error
-     */
-    public function update_reg_step()
-    {
-        $success = true;
-        // if payment required
-        if ($this->checkout->transaction->total() > 0) {
-            do_action(
-                'AHEE__EE_Single_Page_Checkout__process_finalize_registration__before_gateway',
-                $this->checkout->transaction
-            );
-            // attempt payment via payment method
-            $success = $this->process_reg_step();
-        }
-        if ($success && ! $this->checkout->redirect) {
-            $this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn(
-                $this->checkout->transaction->ID()
-            );
-            // set return URL
-            $this->checkout->redirect_url = add_query_arg(
-                array('e_reg_url_link' => $this->checkout->reg_url_link),
-                $this->checkout->thank_you_page_url
-            );
-        }
-        return $success;
-    }
-
-
-    /**
-     *    _process_payment
-     *
-     * @access private
-     * @return    bool
-     * @throws \EE_Error
-     */
-    private function _process_payment()
-    {
-        // basically confirm that the event hasn't sold out since they hit the page
-        if (! $this->_last_second_ticket_verifications()) {
-            return false;
-        }
-        // ya gotta make a choice man
-        if (empty($this->checkout->selected_method_of_payment)) {
-            $this->checkout->json_response->set_plz_select_method_of_payment(
-                __('Please select a method of payment before proceeding.', 'event_espresso')
-            );
-            return false;
-        }
-        // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
-            return false;
-        }
-        // setup billing form
-        if ($this->checkout->payment_method->is_on_site()) {
-            $this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
-                $this->checkout->payment_method
-            );
-            // bad billing form ?
-            if (! $this->_billing_form_is_valid()) {
-                return false;
-            }
-        }
-        // ensure primary registrant has been fully processed
-        if (! $this->_setup_primary_registrant_prior_to_payment()) {
-            return false;
-        }
-        // if session is close to expiring (under 10 minutes by default)
-        if ((time() - EE_Registry::instance()->SSN->expiration()) < EE_Registry::instance()->SSN->extension()) {
-            // add some time to session expiration so that payment can be completed
-            EE_Registry::instance()->SSN->extend_expiration();
-        }
-        /** @type EE_Transaction_Processor $transaction_processor */
-        //$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
-        // in case a registrant leaves to an Off-Site Gateway and never returns, we want to approve any registrations for events with a default reg status of Approved
-        //$transaction_processor->toggle_registration_statuses_for_default_approved_events( $this->checkout->transaction, $this->checkout->reg_cache_where_params );
-        // attempt payment
-        $payment = $this->_attempt_payment($this->checkout->payment_method);
-        // process results
-        $payment = $this->_validate_payment($payment);
-        $payment = $this->_post_payment_processing($payment);
-        // verify payment
-        if ($payment instanceof EE_Payment) {
-            // store that for later
-            $this->checkout->payment = $payment;
-            // we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
-            $this->checkout->transaction->toggle_failed_transaction_status();
-            $payment_status = $payment->status();
-            if (
-                $payment_status === EEM_Payment::status_id_approved
-                || $payment_status === EEM_Payment::status_id_pending
-            ) {
-                return true;
-            } else {
-                return false;
-            }
-        } else if ($payment === true) {
-            // please note that offline payment methods will NOT make a payment,
-            // but instead just mark themselves as the PMD_ID on the transaction, and return true
-            $this->checkout->payment = $payment;
-            return true;
-        }
-        // where's my money?
-        return false;
-    }
-
-
-    /**
-     * _last_second_ticket_verifications
-     *
-     * @access public
-     * @return bool
-     */
-    protected function _last_second_ticket_verifications()
-    {
-        // don't bother re-validating if not a return visit
-        if (! $this->checkout->revisit) {
-            return true;
-        }
-        $registrations = $this->checkout->transaction->registrations();
-        if (empty($registrations)) {
-            return false;
-        }
-        foreach ($registrations as $registration) {
-            if ($registration instanceof EE_Registration) {
-                $event = $registration->event_obj();
-                if ($event instanceof EE_Event && $event->is_sold_out(true)) {
-                    EE_Error::add_error(
-                        apply_filters(
-                            'FHEE__EE_SPCO_Reg_Step_Payment_Options___last_second_ticket_verifications__sold_out_events_msg',
-                            sprintf(
-                                __('It appears that the %1$s event that you were about to make a payment for has sold out since you first registered and/or arrived at this page. Please refresh the page and try again. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
-                                    'event_espresso'),
-                                $event->name()
-                            )
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
-
-    /**
-     * redirect_form
-     *
-     * @access public
-     * @return bool
-     * @throws \EE_Error
-     */
-    public function redirect_form()
-    {
-        $payment_method_billing_info = $this->_payment_method_billing_info(
-            $this->_get_payment_method_for_selected_method_of_payment()
-        );
-        $html                        = $payment_method_billing_info->get_html();
-        $html                        .= $this->checkout->redirect_form;
-        EE_Registry::instance()->REQ->add_output($html);
-        return true;
-    }
-
-
-    /**
-     * _billing_form_is_valid
-     *
-     * @access private
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _billing_form_is_valid()
-    {
-        if (! $this->checkout->payment_method->type_obj()->has_billing_form()) {
-            return true;
-        }
-        if ($this->checkout->billing_form instanceof EE_Billing_Info_Form) {
-            if ($this->checkout->billing_form->was_submitted()) {
-                $this->checkout->billing_form->receive_form_submission();
-                if ($this->checkout->billing_form->is_valid()) {
-                    return true;
-                }
-                $validation_errors = $this->checkout->billing_form->get_validation_errors_accumulated();
-                $error_strings     = array();
-                foreach ($validation_errors as $validation_error) {
-                    if ($validation_error instanceof EE_Validation_Error) {
-                        $form_section = $validation_error->get_form_section();
-                        if ($form_section instanceof EE_Form_Input_Base) {
-                            $label = $form_section->html_label_text();
-                        } elseif ($form_section instanceof EE_Form_Section_Base) {
-                            $label = $form_section->name();
-                        } else {
-                            $label = __('Validation Error', 'event_espresso');
-                        }
-                        $error_strings[] = sprintf('%1$s: %2$s', $label, $validation_error->getMessage());
-                    }
-                }
-                EE_Error::add_error(
-                    sprintf(
-                        __(
-                            'One or more billing form inputs are invalid and require correction before proceeding. %1$s %2$s',
-                            'event_espresso'
-                        ),
-                        '<br/>',
-                        implode('<br/>', $error_strings)
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            } else {
-                EE_Error::add_error(
-                    __(
-                        'The billing form was not submitted or something prevented it\'s submission.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(
-                __('The submitted billing form is invalid possibly due to a technical reason.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return false;
-    }
-
-
-    /**
-     * _setup_primary_registrant_prior_to_payment
-     * ensures that the primary registrant has a valid attendee object created with the critical details populated
-     * (first & last name & email) and that both the transaction object and primary registration object have been saved
-     * plz note that any other registrations will NOT be saved at this point (because they may not have any details
-     * yet)
-     *
-     * @access private
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _setup_primary_registrant_prior_to_payment()
-    {
-        // check if transaction has a primary registrant and that it has a related Attendee object
-        // if not, then we need to at least gather some primary registrant data before attempting payment
-        if (
-            $this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
-            && ! $this->checkout->transaction_has_primary_registrant()
-            && ! $this->_capture_primary_registration_data_from_billing_form()
-        ) {
-            return false;
-        }
-        // because saving an object clears it's cache, we need to do the chevy shuffle
-        // grab the primary_registration object
-        $primary_registration = $this->checkout->transaction->primary_registration();
-        // at this point we'll consider a TXN to not have been failed
-        $this->checkout->transaction->toggle_failed_transaction_status();
-        // save the TXN ( which clears cached copy of primary_registration)
-        $this->checkout->transaction->save();
-        // grab TXN ID and save it to the primary_registration
-        $primary_registration->set_transaction_id($this->checkout->transaction->ID());
-        // save what we have so far
-        $primary_registration->save();
-        return true;
-    }
-
-
-    /**
-     * _capture_primary_registration_data_from_billing_form
-     *
-     * @access private
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _capture_primary_registration_data_from_billing_form()
-    {
-        // convert billing form data into an attendee
-        $this->checkout->primary_attendee_obj = $this->checkout->billing_form->create_attendee_from_billing_form_data();
-        if (! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'The billing form details could not be used for attendee details due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        $primary_registration = $this->checkout->transaction->primary_registration();
-        if (! $primary_registration instanceof EE_Registration) {
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'The primary registrant for this transaction could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        if (! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
-              instanceof
-              EE_Attendee
-        ) {
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'The primary registrant could not be associated with this transaction due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        /** @type EE_Registration_Processor $registration_processor */
-        $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-        // at this point, we should have enough details about the registrant to consider the registration NOT incomplete
-        $registration_processor->toggle_incomplete_registration_status_to_default($primary_registration);
-        return true;
-    }
-
-
-    /**
-     * _get_payment_method_for_selected_method_of_payment
-     * retrieves a valid payment method
-     *
-     * @access public
-     * @return \EE_Payment_Method
-     * @throws \EE_Error
-     */
-    private function _get_payment_method_for_selected_method_of_payment()
-    {
-        if ($this->checkout->selected_method_of_payment === 'events_sold_out') {
-            $this->_redirect_because_event_sold_out();
-            return null;
-        }
-        // get EE_Payment_Method object
-        if (isset($this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment])) {
-            $payment_method = $this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment];
-        } else {
-            // load EEM_Payment_Method
-            EE_Registry::instance()->load_model('Payment_Method');
-            /** @type EEM_Payment_Method $EEM_Payment_Method */
-            $EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
-            $payment_method     = $EEM_Payment_Method->get_one_by_slug($this->checkout->selected_method_of_payment);
-        }
-        // verify $payment_method
-        if (! $payment_method instanceof EE_Payment_Method) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'The selected method of payment could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        // and verify it has a valid Payment_Method Type object
-        if (! $payment_method->type_obj() instanceof EE_PMT_Base) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'A valid payment method could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return null;
-        }
-        return $payment_method;
-    }
-
-
-    /**
-     *    _attempt_payment
-     *
-     * @access    private
-     * @type    EE_Payment_Method $payment_method
-     * @return    mixed    EE_Payment | boolean
-     * @throws \EE_Error
-     */
-    private function _attempt_payment(EE_Payment_Method $payment_method)
-    {
-        $payment = null;
-        $this->checkout->transaction->save();
-        $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-        if (! $payment_processor instanceof EE_Payment_Processor) {
-            return false;
-        }
-        try {
-            $payment_processor->set_revisit($this->checkout->revisit);
-            // generate payment object
-            $payment = $payment_processor->process_payment(
-                $payment_method,
-                $this->checkout->transaction,
-                $this->checkout->amount_owing,
-                $this->checkout->billing_form,
-                $this->_get_return_url($payment_method),
-                'CART',
-                $this->checkout->admin_request,
-                true,
-                $this->reg_step_url()
-            );
-        } catch (Exception $e) {
-            $this->_handle_payment_processor_exception($e);
-        }
-        return $payment;
-    }
-
-
-    /**
-     * _handle_payment_processor_exception
-     *
-     * @access protected
-     * @param \Exception $e
-     * @return void
-     * @throws \EE_Error
-     */
-    protected function _handle_payment_processor_exception(Exception $e)
-    {
-        EE_Error::add_error(
-            sprintf(
-                __(
-                    'The payment could not br processed due to a technical issue.%1$sPlease try again or contact %2$s for assistance.||The following Exception was thrown in %4$s on line %5$s:%1$s%3$s',
-                    'event_espresso'
-                ),
-                '<br/>',
-                EE_Registry::instance()->CFG->organization->get_pretty('email'),
-                $e->getMessage(),
-                $e->getFile(),
-                $e->getLine()
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-    }
-
-
-    /**
-     * _get_return_url
-     *
-     * @access protected
-     * @param \EE_Payment_Method $payment_method
-     * @return string
-     * @throws \EE_Error
-     */
-    protected function _get_return_url(EE_Payment_Method $payment_method)
-    {
-        $return_url = '';
-        switch ($payment_method->type_obj()->payment_occurs()) {
-            case EE_PMT_Base::offsite :
-                $return_url = add_query_arg(
-                    array(
-                        'action'                     => 'process_gateway_response',
-                        'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-                        'spco_txn'                   => $this->checkout->transaction->ID(),
-                    ),
-                    $this->reg_step_url()
-                );
-                break;
-            case EE_PMT_Base::onsite :
-            case EE_PMT_Base::offline :
-                $return_url = $this->checkout->next_step->reg_step_url();
-                break;
-        }
-        return $return_url;
-    }
-
-
-    /**
-     * _validate_payment
-     *
-     * @access private
-     * @param EE_Payment $payment
-     * @return EE_Payment | FALSE
-     * @throws \EE_Error
-     */
-    private function _validate_payment($payment = null)
-    {
-        if ($this->checkout->payment_method->is_off_line()) {
-            return true;
-        }
-        // verify payment object
-        if (! $payment instanceof EE_Payment) {
-            // not a payment
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'A valid payment was not generated due to a technical issue.%1$sPlease try again or contact %2$s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        return $payment;
-    }
-
-
-    /**
-     * _post_payment_processing
-     *
-     * @access private
-     * @param EE_Payment|bool $payment
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _post_payment_processing($payment = null)
-    {
-        // Off-Line payment?
-        if ($payment === true) {
-            //$this->_setup_redirect_for_next_step();
-            return true;
-            // On-Site payment?
-        } else if ($this->checkout->payment_method->is_on_site()) {
-            if (! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
-                //$this->_setup_redirect_for_next_step();
-                $this->checkout->continue_reg = false;
-            }
-            // Off-Site payment?
-        } else if ($this->checkout->payment_method->is_off_site()) {
-            // if a payment object was made and it specifies a redirect url, then we'll setup that redirect info
-            if ($payment instanceof EE_Payment && $payment->redirect_url()) {
-                do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->redirect_url(), '$payment->redirect_url()');
-                $this->checkout->redirect      = true;
-                $this->checkout->redirect_form = $payment->redirect_form();
-                $this->checkout->redirect_url  = $this->reg_step_url('redirect_form');
-                // set JSON response
-                $this->checkout->json_response->set_redirect_form($this->checkout->redirect_form);
-                // set cron job for finalizing the TXN
-                // in case the user does not return from the off-site gateway
-                EE_Cron_Tasks::schedule_finalize_abandoned_transactions_check(
-                    EE_Registry::instance()->SSN->expiration() + 1,
-                    $this->checkout->transaction->ID()
-                );
-                // and lastly, let's bump the payment status to pending
-                $payment->set_status(EEM_Payment::status_id_pending);
-                $payment->save();
-            } else {
-                // not a payment
-                $this->checkout->continue_reg = false;
-                EE_Error::add_error(
-                    sprintf(
-                        __(
-                            'It appears the Off Site Payment Method was not configured properly.%sPlease try again or contact %s for assistance.',
-                            'event_espresso'
-                        ),
-                        '<br/>',
-                        EE_Registry::instance()->CFG->organization->get_pretty('email')
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            // ummm ya... not Off-Line, not On-Site, not off-Site ????
-            $this->checkout->continue_reg = false;
-            return false;
-        }
-        return $payment;
-    }
-
-
-
-    /**
-     *    _setup_redirect_for_next_step
-     *
-     * @access private
-     * @return    void
-     */
-    //private function _setup_redirect_for_next_step() {
-    //$this->checkout->redirect = TRUE;
-    //$this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
-    // set JSON response
-    //$this->checkout->json_response->set_redirect_url( $this->checkout->redirect_url );
-    //}
-    /**
-     *    _process_payment_status
-     *
-     * @access private
-     * @type    EE_Payment $payment
-     * @param string       $payment_occurs
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _process_payment_status($payment, $payment_occurs = EE_PMT_Base::offline)
-    {
-        // off-line payment? carry on
-        if ($payment_occurs === EE_PMT_Base::offline) {
-            return true;
-        }
-        // verify payment validity
-        if ($payment instanceof EE_Payment) {
-            do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->status(), '$payment->status()');
-            $msg = $payment->gateway_response();
-            // check results
-            switch ($payment->status()) {
-                // good payment
-                case EEM_Payment::status_id_approved :
-                    EE_Error::add_success(
-                        __('Your payment was processed successfully.', 'event_espresso'),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                    return true;
-                    break;
-                // slow payment
-                case EEM_Payment::status_id_pending :
-                    if (empty($msg)) {
-                        $msg = __(
-                            'Your payment appears to have been processed successfully, but the Instant Payment Notification has not yet been received. It should arrive shortly.',
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_success($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return true;
-                    break;
-                // don't wanna payment
-                case EEM_Payment::status_id_cancelled :
-                    if (empty($msg)) {
-                        $msg = _n(
-                            'Payment cancelled. Please try again.',
-                            'Payment cancelled. Please try again or select another method of payment.',
-                            count($this->checkout->available_payment_methods),
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return false;
-                    break;
-                // not enough payment
-                case EEM_Payment::status_id_declined :
-                    if (empty($msg)) {
-                        $msg = _n(
-                            'We\'re sorry but your payment was declined. Please try again.',
-                            'We\'re sorry but your payment was declined. Please try again or select another method of payment.',
-                            count($this->checkout->available_payment_methods),
-                            'event_espresso'
-                        );
-                    }
-                    EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
-                    return false;
-                    break;
-                // bad payment
-                case EEM_Payment::status_id_failed :
-                    if (! empty($msg)) {
-                        EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-                        return false;
-                    }
-                    // default to error below
-                    break;
-            }
-        }
-        // off-site payment gateway responses are too unreliable, so let's just assume that
-        // the payment processing is just running slower than the registrant's request
-        if ($payment_occurs === EE_PMT_Base::offsite) {
-            return true;
-        }
-        EE_Error::add_error(
-            sprintf(
-                __(
-                    'Your payment could not be processed successfully due to a technical issue.%sPlease try again or contact %s for assistance.',
-                    'event_espresso'
-                ),
-                '<br/>',
-                EE_Registry::instance()->CFG->organization->get_pretty('email')
-            ),
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        return false;
-    }
-
-
-
-
-
-
-    /********************************************************************************************************/
-    /**********************************  PROCESS GATEWAY RESPONSE  **********************************/
-    /********************************************************************************************************/
-    /**
-     * process_gateway_response
-     * this is the return point for Off-Site Payment Methods
-     * It will attempt to "handle the IPN" if it appears that this has not already occurred,
-     * otherwise, it will load up the last payment made for the TXN.
-     * If the payment retrieved looks good, it will then either:
-     *    complete the current step and allow advancement to the next reg step
-     *        or present the payment options again
-     *
-     * @access private
-     * @return EE_Payment | FALSE
-     * @throws \EE_Error
-     */
-    public function process_gateway_response()
-    {
-        $payment = null;
-        // how have they chosen to pay?
-        $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
-        // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
-            $this->checkout->continue_reg = false;
-            return false;
-        }
-        if (! $this->checkout->payment_method->is_off_site()) {
-            return false;
-        }
-        $this->_validate_offsite_return();
-        // DEBUG LOG
-        //$this->checkout->log(
-        //	__CLASS__, __FUNCTION__, __LINE__,
-        //	array(
-        //		'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-        //		'payment_method' => $this->checkout->payment_method,
-        //	),
-        //	true
-        //);
-        // verify TXN
-        if ($this->checkout->transaction instanceof EE_Transaction) {
-            $gateway = $this->checkout->payment_method->type_obj()->get_gateway();
-            if (! $gateway instanceof EE_Offsite_Gateway) {
-                $this->checkout->continue_reg = false;
-                return false;
-            }
-            $payment = $this->_process_off_site_payment($gateway);
-            $payment = $this->_process_cancelled_payments($payment);
-            $payment = $this->_validate_payment($payment);
-            // if payment was not declined by the payment gateway or cancelled by the registrant
-            if ($this->_process_payment_status($payment, EE_PMT_Base::offsite)) {
-                //$this->_setup_redirect_for_next_step();
-                // store that for later
-                $this->checkout->payment = $payment;
-                // mark this reg step as completed, as long as gateway doesn't use a separate IPN request,
-                // because we will complete this step during the IPN processing then
-                if ($gateway instanceof EE_Offsite_Gateway && ! $this->handle_IPN_in_this_request()) {
-                    $this->set_completed();
-                }
-                return true;
-            }
-        }
-        // DEBUG LOG
-        //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
-        //	array( 'payment' => $payment )
-        //);
-        $this->checkout->continue_reg = false;
-        return false;
-    }
-
-
-    /**
-     * _validate_return
-     *
-     * @access private
-     * @return void
-     * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
-     * @throws \EE_Error
-     */
-    private function _validate_offsite_return()
-    {
-        $TXN_ID = (int)EE_Registry::instance()->REQ->get('spco_txn', 0);
-        if ($TXN_ID !== $this->checkout->transaction->ID()) {
-            // Houston... we might have a problem
-            $invalid_TXN = false;
-            // first gather some info
-            $valid_TXN          = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
-            $primary_registrant = $valid_TXN instanceof EE_Transaction
-                ? $valid_TXN->primary_registration()
-                : null;
-            // let's start by retrieving the cart for this TXN
-            $cart = $this->checkout->get_cart_for_transaction($this->checkout->transaction);
-            if ($cart instanceof EE_Cart) {
-                // verify that the current cart has tickets
-                $tickets = $cart->get_tickets();
-                if (empty($tickets)) {
-                    $invalid_TXN = true;
-                }
-            } else {
-                $invalid_TXN = true;
-            }
-            $valid_TXN_SID = $primary_registrant instanceof EE_Registration
-                ? $primary_registrant->session_ID()
-                : null;
-            // validate current Session ID and compare against valid TXN session ID
-            if (
-                $invalid_TXN // if this is already true, then skip other checks
-                || EE_Session::instance()->id() === null
-                || (
-                    // WARNING !!!
-                    // this could be PayPal sending back duplicate requests (ya they do that)
-                    // or it **could** mean someone is simply registering AGAIN after having just done so
-                    // so now we need to determine if this current TXN looks valid or not
-                    // and whether this reg step has even been started ?
-                    EE_Session::instance()->id() === $valid_TXN_SID
-                    // really? you're half way through this reg step, but you never started it ?
-                    && $this->checkout->transaction->reg_step_completed($this->slug()) === false
-                )
-            ) {
-                $invalid_TXN = true;
-            }
-            if ($invalid_TXN) {
-                // is the valid TXN completed ?
-                if ($valid_TXN instanceof EE_Transaction) {
-                    // has this step even been started ?
-                    $reg_step_completed = $valid_TXN->reg_step_completed($this->slug());
-                    if ($reg_step_completed !== false && $reg_step_completed !== true) {
-                        // so it **looks** like this is a double request from PayPal
-                        // so let's try to pick up where we left off
-                        $this->checkout->transaction = $valid_TXN;
-                        $this->checkout->refresh_all_entities(true);
-                        return;
-                    }
-                }
-                // you appear to be lost?
-                $this->_redirect_wayward_request($primary_registrant);
-            }
-        }
-    }
-
-
-    /**
-     * _redirect_wayward_request
-     *
-     * @access private
-     * @param \EE_Registration|null $primary_registrant
-     * @return bool
-     * @throws \EE_Error
-     */
-    private function _redirect_wayward_request(EE_Registration $primary_registrant)
-    {
-        if (! $primary_registrant instanceof EE_Registration) {
-            // try redirecting based on the current TXN
-            $primary_registrant = $this->checkout->transaction instanceof EE_Transaction
-                ? $this->checkout->transaction->primary_registration()
-                : null;
-        }
-        if (! $primary_registrant instanceof EE_Registration) {
-            EE_Error::add_error(
-                sprintf(
-                    __(
-                        'Invalid information was received from the Off-Site Payment Processor and your Transaction details could not be retrieved from the database.%1$sPlease try again or contact %2$s for assistance.',
-                        'event_espresso'
-                    ),
-                    '<br/>',
-                    EE_Registry::instance()->CFG->organization->get_pretty('email')
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // make sure transaction is not locked
-        $this->checkout->transaction->unlock();
-        wp_safe_redirect(
-            add_query_arg(
-                array(
-                    'e_reg_url_link' => $primary_registrant->reg_url_link(),
-                ),
-                $this->checkout->thank_you_page_url
-            )
-        );
-        exit();
-    }
-
-
-    /**
-     * _process_off_site_payment
-     *
-     * @access private
-     * @param \EE_Offsite_Gateway $gateway
-     * @return \EE_Payment
-     * @throws \EE_Error
-     */
-    private function _process_off_site_payment(EE_Offsite_Gateway $gateway)
-    {
-        try {
-            $request_data = \EE_Registry::instance()->REQ->params();
-            // if gateway uses_separate_IPN_request, then we don't have to process the IPN manually
-            $this->set_handle_IPN_in_this_request(
-                $gateway->handle_IPN_in_this_request($request_data, false)
-            );
-            if ($this->handle_IPN_in_this_request()) {
-                // get payment details and process results
-                /** @type EE_Payment_Processor $payment_processor */
-                $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-                $payment           = $payment_processor->process_ipn(
-                    $request_data,
-                    $this->checkout->transaction,
-                    $this->checkout->payment_method,
-                    true,
-                    false
-                );
-                //$payment_source = 'process_ipn';
-            } else {
-                $payment = $this->checkout->transaction->last_payment();
-                //$payment_source = 'last_payment';
-            }
-        } catch (Exception $e) {
-            // let's just eat the exception and try to move on using any previously set payment info
-            $payment = $this->checkout->transaction->last_payment();
-            //$payment_source = 'last_payment after Exception';
-            // but if we STILL don't have a payment object
-            if (! $payment instanceof EE_Payment) {
-                // then we'll object ! ( not object like a thing... but object like what a lawyer says ! )
-                $this->_handle_payment_processor_exception($e);
-            }
-        }
-        // DEBUG LOG
-        //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
-        //	array(
-        //		'process_ipn_payment' => $payment,
-        //		'payment_source'      => $payment_source,
-        //	)
-        //);
-        return $payment;
-    }
-
-
-    /**
-     * _process_cancelled_payments
-     * just makes sure that the payment status gets updated correctly
-     * so tha tan error isn't generated during payment validation
-     *
-     * @access private
-     * @param EE_Payment $payment
-     * @return EE_Payment | FALSE
-     * @throws \EE_Error
-     */
-    private function _process_cancelled_payments($payment = null)
-    {
-        if (
-            $payment instanceof EE_Payment
-            && isset($_REQUEST['ee_cancel_payment'])
-            && $payment->status() === EEM_Payment::status_id_failed
-        ) {
-            $payment->set_status(EEM_Payment::status_id_cancelled);
-        }
-        return $payment;
-    }
-
-
-    /**
-     *    get_transaction_details_for_gateways
-     *
-     * @access    public
-     * @return    int
-     * @throws \EE_Error
-     */
-    public function get_transaction_details_for_gateways()
-    {
-        $txn_details = array();
-        // ya gotta make a choice man
-        if (empty($this->checkout->selected_method_of_payment)) {
-            $txn_details = array(
-                'error' => __('Please select a method of payment before proceeding.', 'event_espresso'),
-            );
-        }
-        // get EE_Payment_Method object
-        if (
-            empty($txn_details)
-            &&
-            ! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()
-        ) {
-            $txn_details = array(
-                'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
-                'error'                      => __(
-                    'A valid Payment Method could not be determined.',
-                    'event_espresso'
-                ),
-            );
-        }
-        if (empty($txn_details) && $this->checkout->transaction instanceof EE_Transaction) {
-            $return_url  = $this->_get_return_url($this->checkout->payment_method);
-            $txn_details = array(
-                'TXN_ID'         => $this->checkout->transaction->ID(),
-                'TXN_timestamp'  => $this->checkout->transaction->datetime(),
-                'TXN_total'      => $this->checkout->transaction->total(),
-                'TXN_paid'       => $this->checkout->transaction->paid(),
-                'TXN_reg_steps'  => $this->checkout->transaction->reg_steps(),
-                'STS_ID'         => $this->checkout->transaction->status_ID(),
-                'PMD_ID'         => $this->checkout->transaction->payment_method_ID(),
-                'payment_amount' => $this->checkout->amount_owing,
-                'return_url'     => $return_url,
-                'cancel_url'     => add_query_arg(array('ee_cancel_payment' => true), $return_url),
-                'notify_url'     => EE_Config::instance()->core->txn_page_url(
-                    array(
-                        'e_reg_url_link'    => $this->checkout->transaction->primary_registration()->reg_url_link(),
-                        'ee_payment_method' => $this->checkout->payment_method->slug(),
-                    )
-                ),
-            );
-        }
-        echo wp_json_encode($txn_details);
-        exit();
-    }
-
-
-    /**
-     *    __sleep
-     * to conserve db space, let's remove the reg_form and the EE_Checkout object from EE_SPCO_Reg_Step objects upon
-     * serialization EE_Checkout will handle the reimplementation of itself upon waking, but we won't bother with the
-     * reg form, because if needed, it will be regenerated anyways
-     *
-     * @return array
-     */
-    public function __sleep()
-    {
-        // remove the reg form and the checkout
-        return array_diff(array_keys(get_object_vars($this)), array('reg_form', 'checkout', 'line_item_display'));
-    }
+	/**
+	 * @access protected
+	 * @var EE_Line_Item_Display $Line_Item_Display
+	 */
+	protected $line_item_display;
+
+	/**
+	 * @access protected
+	 * @var boolean $handle_IPN_in_this_request
+	 */
+	protected $handle_IPN_in_this_request = false;
+
+
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		add_filter(
+			'FHEE__SPCO__EE_Line_Item_Filter_Collection',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'add_spco_line_item_filters')
+		);
+		add_action(
+			'wp_ajax_switch_spco_billing_form',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
+		);
+		add_action(
+			'wp_ajax_nopriv_switch_spco_billing_form',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'switch_spco_billing_form')
+		);
+		add_action('wp_ajax_save_payer_details', array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details'));
+		add_action(
+			'wp_ajax_nopriv_save_payer_details',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'save_payer_details')
+		);
+		add_action(
+			'wp_ajax_get_transaction_details_for_gateways',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
+		);
+		add_action(
+			'wp_ajax_nopriv_get_transaction_details_for_gateways',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'get_transaction_details')
+		);
+		add_filter(
+			'FHEE__EED_Recaptcha___bypass_recaptcha__bypass_request_params_array',
+			array('EE_SPCO_Reg_Step_Payment_Options', 'bypass_recaptcha_for_load_payment_method'),
+			10,
+			1
+		);
+	}
+
+
+	/**
+	 *    ajax switch_spco_billing_form
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function switch_spco_billing_form()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('switch_payment_method');
+	}
+
+
+	/**
+	 *    ajax save_payer_details
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function save_payer_details()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('save_payer_details_via_ajax');
+	}
+
+
+	/**
+	 *    ajax get_transaction_details
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function get_transaction_details()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('get_transaction_details_for_gateways');
+	}
+
+
+	/**
+	 * bypass_recaptcha_for_load_payment_method
+	 *
+	 * @access public
+	 * @return array
+	 */
+	public static function bypass_recaptcha_for_load_payment_method()
+	{
+		return array(
+			'EESID'  => EE_Registry::instance()->SSN->id(),
+			'step'   => 'payment_options',
+			'action' => 'spco_billing_form',
+		);
+	}
+
+
+	/**
+	 *    class constructor
+	 *
+	 * @access    public
+	 * @param    EE_Checkout $checkout
+	 */
+	public function __construct(EE_Checkout $checkout)
+	{
+		$this->_slug     = 'payment_options';
+		$this->_name     = __('Payment Options', 'event_espresso');
+		$this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'payment_options_main.template.php';
+		$this->checkout  = $checkout;
+		$this->_reset_success_message();
+		$this->set_instructions(
+			__(
+				'Please select a method of payment and provide any necessary billing information before proceeding.',
+				'event_espresso'
+			)
+		);
+	}
+
+
+	/**
+	 * @return null
+	 */
+	public function line_item_display()
+	{
+		return $this->line_item_display;
+	}
+
+
+	/**
+	 * @param null $line_item_display
+	 */
+	public function set_line_item_display($line_item_display)
+	{
+		$this->line_item_display = $line_item_display;
+	}
+
+
+	/**
+	 * @return boolean
+	 */
+	public function handle_IPN_in_this_request()
+	{
+		return $this->handle_IPN_in_this_request;
+	}
+
+
+	/**
+	 * @param boolean $handle_IPN_in_this_request
+	 */
+	public function set_handle_IPN_in_this_request($handle_IPN_in_this_request)
+	{
+		$this->handle_IPN_in_this_request = filter_var($handle_IPN_in_this_request, FILTER_VALIDATE_BOOLEAN);
+	}
+
+
+	/**
+	 * translate_js_strings
+	 *
+	 * @return void
+	 */
+	public function translate_js_strings()
+	{
+		EE_Registry::$i18n_js_strings['no_payment_method']      = __(
+			'Please select a method of payment in order to continue.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['invalid_payment_method'] = __(
+			'A valid method of payment could not be determined. Please refresh the page and try again.',
+			'event_espresso'
+		);
+		EE_Registry::$i18n_js_strings['forwarding_to_offsite']  = __(
+			'Forwarding to Secure Payment Provider.',
+			'event_espresso'
+		);
+	}
+
+
+	/**
+	 * enqueue_styles_and_scripts
+	 *
+	 * @return void
+	 */
+	public function enqueue_styles_and_scripts()
+	{
+		$transaction = $this->checkout->transaction;
+		//if the transaction isn't set or nothing is owed on it, don't enqueue any JS
+		if (! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
+			return;
+		}
+		foreach (
+			EEM_Payment_Method::instance()->get_all_for_transaction($transaction,
+				EEM_Payment_Method::scope_cart) as $payment_method
+		) {
+			$type_obj = $payment_method->type_obj();
+			if ($type_obj instanceof EE_PMT_Base) {
+				$billing_form = $type_obj->generate_new_billing_form($transaction);
+				if ($billing_form instanceof EE_Form_Section_Proper) {
+					$billing_form->enqueue_js();
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * initialize_reg_step
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function initialize_reg_step()
+	{
+		// TODO: if /when we implement donations, then this will need overriding
+		if (
+			// don't need payment options for:
+			// 	registrations made via the admin
+			// 	completed transactions
+			// 	overpaid transactions
+			// 	$ 0.00 transactions (no payment required)
+			! $this->checkout->payment_required()
+			// but do NOT remove if current action being called belongs to this reg step
+			&& ! is_callable(array($this, $this->checkout->action))
+			&& ! $this->completed()
+		) {
+			// and if so, then we no longer need the Payment Options step
+			if ($this->is_current_step()) {
+				$this->checkout->generate_reg_form = false;
+			}
+			$this->checkout->remove_reg_step($this->_slug);
+			// DEBUG LOG
+			//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
+			return false;
+		}
+		// load EEM_Payment_Method
+		EE_Registry::instance()->load_model('Payment_Method');
+		// get all active payment methods
+		$this->checkout->available_payment_methods = EEM_Payment_Method::instance()->get_all_for_transaction(
+			$this->checkout->transaction,
+			EEM_Payment_Method::scope_cart
+		);
+		return true;
+	}
+
+
+	/**
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	public function generate_reg_form()
+	{
+		// reset in case someone changes their mind
+		$this->_reset_selected_method_of_payment();
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'payments_closed';
+		$registrations_requiring_payment            = array();
+		$registrations_for_free_events              = array();
+		$registrations_requiring_pre_approval       = array();
+		$sold_out_events                            = array();
+		$insufficient_spaces_available              = array();
+		$no_payment_required                        = true;
+		// loop thru registrations to gather info
+		$registrations         = $this->checkout->transaction->registrations($this->checkout->reg_cache_where_params);
+		$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+			$registrations,
+			$this->checkout->revisit
+		);
+		foreach ($registrations as $REG_ID => $registration) {
+			/** @var $registration EE_Registration */
+			// has this registration lost it's space ?
+			if (isset($ejected_registrations[$REG_ID])) {
+				$insufficient_spaces_available[$registration->event()->ID()] = $registration->event();
+				continue;
+			}
+			// event requires admin approval
+			if ($registration->status_ID() === EEM_Registration::status_id_not_approved) {
+				// add event to list of events with pre-approval reg status
+				$registrations_requiring_pre_approval[$REG_ID] = $registration;
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_pre_approval',
+					$registration->event(),
+					$this
+				);
+				continue;
+			}
+			if (
+				// returning registrant
+				$this->checkout->revisit
+				// anything other than Approved
+				&& $registration->status_ID() !== EEM_Registration::status_id_approved
+				&& (
+					$registration->event()->is_sold_out()
+					|| $registration->event()->is_sold_out(true)
+				)
+			) {
+				// add event to list of events that are sold out
+				$sold_out_events[$registration->event()->ID()] = $registration->event();
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__sold_out_event',
+					$registration->event(),
+					$this
+				);
+				continue;
+			}
+			// are they allowed to pay now and is there monies owing?
+			if ($registration->owes_monies_and_can_pay()) {
+				$registrations_requiring_payment[$REG_ID] = $registration;
+				do_action(
+					'AHEE__EE_SPCO_Reg_Step_Payment_Options__generate_reg_form__event_requires_payment',
+					$registration->event(),
+					$this
+				);
+			} else if (
+				! $this->checkout->revisit
+				&& $registration->status_ID() !== EEM_Registration::status_id_not_approved
+				&& $registration->ticket()->is_free()
+			) {
+				$registrations_for_free_events[$registration->event()->ID()] = $registration;
+			}
+		}
+		$subsections = array();
+		// now decide which template to load
+		if (! empty($sold_out_events)) {
+			$subsections['sold_out_events'] = $this->_sold_out_events($sold_out_events);
+		}
+		if (! empty($insufficient_spaces_available)) {
+			$subsections['insufficient_space'] = $this->_insufficient_spaces_available(
+				$insufficient_spaces_available
+			);
+		}
+		if (! empty($registrations_requiring_pre_approval)) {
+			$subsections['registrations_requiring_pre_approval'] = $this->_registrations_requiring_pre_approval(
+				$registrations_requiring_pre_approval
+			);
+		}
+		if (! empty($registrations_for_free_events)) {
+			$subsections['no_payment_required'] = $this->_no_payment_required($registrations_for_free_events);
+		}
+		if (! empty($registrations_requiring_payment)) {
+			if ($this->checkout->amount_owing > 0) {
+				// autoload Line_Item_Display classes
+				EEH_Autoloader::register_line_item_filter_autoloaders();
+				$line_item_filter_processor = new EE_Line_Item_Filter_Processor(
+					apply_filters(
+						'FHEE__SPCO__EE_Line_Item_Filter_Collection',
+						new EE_Line_Item_Filter_Collection()
+					),
+					$this->checkout->cart->get_grand_total()
+				);
+				/** @var EE_Line_Item $filtered_line_item_tree */
+				$filtered_line_item_tree = $line_item_filter_processor->process();
+				EEH_Autoloader::register_line_item_display_autoloaders();
+				$this->set_line_item_display(new EE_Line_Item_Display('spco'));
+				$subsections['payment_options'] = $this->_display_payment_options(
+					$this->line_item_display->display_line_item(
+						$filtered_line_item_tree,
+						array('registrations' => $registrations)
+					)
+				);
+				$this->checkout->amount_owing   = $filtered_line_item_tree->total();
+				$this->_apply_registration_payments_to_amount_owing($registrations);
+			}
+			$no_payment_required = false;
+		} else {
+			$this->_hide_reg_step_submit_button_if_revisit();
+		}
+		$this->_save_selected_method_of_payment();
+
+		$subsections['default_hidden_inputs'] = $this->reg_step_hidden_inputs();
+		$subsections['extra_hidden_inputs']   = $this->_extra_hidden_inputs($no_payment_required);
+
+		return new EE_Form_Section_Proper(
+			array(
+				'name'            => $this->reg_form_name(),
+				'html_id'         => $this->reg_form_name(),
+				'subsections'     => $subsections,
+				'layout_strategy' => new EE_No_Layout(),
+			)
+		);
+	}
+
+
+	/**
+	 * add line item filters required for this reg step
+	 * these filters are applied via this line in EE_SPCO_Reg_Step_Payment_Options::set_hooks():
+	 *        add_filter( 'FHEE__SPCO__EE_Line_Item_Filter_Collection', array( 'EE_SPCO_Reg_Step_Payment_Options',
+	 *        'add_spco_line_item_filters' ) ); so any code that wants to use the same set of filters during the
+	 *        payment options reg step, can apply these filters via the following: apply_filters(
+	 *        'FHEE__SPCO__EE_Line_Item_Filter_Collection', new EE_Line_Item_Filter_Collection() ) or to an existing
+	 *        filter collection by passing that instead of instantiating a new collection
+	 *
+	 * @param \EE_Line_Item_Filter_Collection $line_item_filter_collection
+	 * @return \EE_Line_Item_Filter_Collection
+	 * @throws \EE_Error
+	 */
+	public static function add_spco_line_item_filters(EE_Line_Item_Filter_Collection $line_item_filter_collection)
+	{
+		if (! EE_Registry::instance()->SSN instanceof EE_Session) {
+			return $line_item_filter_collection;
+		}
+		if (! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
+			return $line_item_filter_collection;
+		}
+		if (! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
+			return $line_item_filter_collection;
+		}
+		$line_item_filter_collection->add(
+			new EE_Billable_Line_Item_Filter(
+				EE_SPCO_Reg_Step_Payment_Options::remove_ejected_registrations(
+					EE_Registry::instance()->SSN->checkout()->transaction->registrations(
+						EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
+					)
+				)
+			)
+		);
+		$line_item_filter_collection->add(new EE_Non_Zero_Line_Item_Filter());
+		return $line_item_filter_collection;
+	}
+
+
+	/**
+	 * remove_ejected_registrations
+	 * if a registrant has lost their potential space at an event due to lack of payment,
+	 * then this method removes them from the list of registrations being paid for during this request
+	 *
+	 * @param \EE_Registration[] $registrations
+	 * @return \EE_Registration[]
+	 * @throws \EE_Error
+	 */
+	public static function remove_ejected_registrations(array $registrations)
+	{
+		$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+			$registrations,
+			EE_Registry::instance()->SSN->checkout()->revisit
+		);
+		foreach ($registrations as $REG_ID => $registration) {
+			// has this registration lost it's space ?
+			if (isset($ejected_registrations[$REG_ID])) {
+				unset($registrations[$REG_ID]);
+				continue;
+			}
+		}
+		return $registrations;
+	}
+
+
+	/**
+	 * find_registrations_that_lost_their_space
+	 * If a registrant chooses an offline payment method like Invoice,
+	 * then no space is reserved for them at the event until they fully pay fo that site
+	 * (unless the event's default reg status is set to APPROVED)
+	 * if a registrant then later returns to pay, but the number of spaces available has been reduced due to sales,
+	 * then this method will determine which registrations have lost the ability to complete the reg process.
+	 *
+	 * @param \EE_Registration[] $registrations
+	 * @param bool               $revisit
+	 * @return array
+	 * @throws \EE_Error
+	 */
+	public static function find_registrations_that_lost_their_space(array $registrations, $revisit = false)
+	{
+		// registrations per event
+		$event_reg_count = array();
+		// spaces left per event
+		$event_spaces_remaining = array();
+		// tickets left sorted by ID
+		$tickets_remaining = array();
+		// registrations that have lost their space
+		$ejected_registrations = array();
+		foreach ($registrations as $REG_ID => $registration) {
+			if (
+				$registration->status_ID() === EEM_Registration::status_id_approved
+				|| apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__find_registrations_that_lost_their_space__allow_reg_payment',
+					false,
+					$registration,
+					$revisit
+				)
+			) {
+				continue;
+			}
+			$EVT_ID = $registration->event_ID();
+			$ticket = $registration->ticket();
+			if (! isset($tickets_remaining[$ticket->ID()])) {
+				$tickets_remaining[$ticket->ID()] = $ticket->remaining();
+			}
+			if ($tickets_remaining[$ticket->ID()] > 0) {
+				if (! isset($event_reg_count[$EVT_ID])) {
+					$event_reg_count[$EVT_ID] = 0;
+				}
+				$event_reg_count[$EVT_ID]++;
+				if (! isset($event_spaces_remaining[$EVT_ID])) {
+					$event_spaces_remaining[$EVT_ID] = $registration->event()->spaces_remaining_for_sale();
+				}
+			}
+			if (
+				$revisit
+				&& (
+					$tickets_remaining[$ticket->ID()] === 0
+					|| $event_reg_count[$EVT_ID] > $event_spaces_remaining[$EVT_ID]
+				)
+			) {
+				$ejected_registrations[$REG_ID] = $registration->event();
+				if ($registration->status_ID() !== EEM_Registration::status_id_wait_list) {
+					/** @type EE_Registration_Processor $registration_processor */
+					$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+					// at this point, we should have enough details about the registrant to consider the registration NOT incomplete
+					$registration_processor->manually_update_registration_status(
+						$registration,
+						EEM_Registration::status_id_wait_list
+					);
+				}
+
+			}
+		}
+		return $ejected_registrations;
+	}
+
+
+	/**
+	 * _hide_reg_step_submit_button
+	 * removes the html for the reg step submit button
+	 * by replacing it with an empty string via filter callback
+	 *
+	 * @return void
+	 */
+	protected function _adjust_registration_status_if_event_old_sold()
+	{
+	}
+
+
+	/**
+	 * _hide_reg_step_submit_button
+	 * removes the html for the reg step submit button
+	 * by replacing it with an empty string via filter callback
+	 *
+	 * @return void
+	 */
+	protected function _hide_reg_step_submit_button_if_revisit()
+	{
+		if ($this->checkout->revisit) {
+			add_filter('FHEE__EE_SPCO_Reg_Step__reg_step_submit_button__sbmt_btn_html', '__return_empty_string');
+		}
+	}
+
+
+	/**
+	 * sold_out_events
+	 * displays notices regarding events that have sold out since hte registrant first signed up
+	 *
+	 * @param \EE_Event[] $sold_out_events_array
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _sold_out_events($sold_out_events_array = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'events_sold_out';
+		$sold_out_events                            = '';
+		foreach ($sold_out_events_array as $sold_out_event) {
+			$sold_out_events .= EEH_HTML::li(
+				EEH_HTML::span('  ' . $sold_out_event->name(), '',
+					'dashicons dashicons-marker ee-icon-size-16 pink-text')
+			);
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'sold_out_events.template.php',
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
+							array(
+								'sold_out_events'     => $sold_out_events,
+								'sold_out_events_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__sold_out_events_msg',
+									sprintf(
+										__('It appears that the event you were about to make a payment for has sold out since you first registered. If you have already made a partial payment towards this event, please contact the event administrator for a refund.%3$s%3$s%1$sPlease note that availability can change at any time due to cancellations, so please check back again later if registration for this event(s) is important to you.%2$s',
+											'event_espresso'),
+										'<strong>',
+										'</strong>',
+										'<br />'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _insufficient_spaces_available
+	 * displays notices regarding events that do not have enough remaining spaces
+	 * to satisfy the current number of registrations looking to pay
+	 *
+	 * @param \EE_Event[] $insufficient_spaces_events_array
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _insufficient_spaces_available($insufficient_spaces_events_array = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'invoice';
+		$insufficient_space_events                  = '';
+		foreach ($insufficient_spaces_events_array as $event) {
+			if ($event instanceof EE_Event) {
+				$insufficient_space_events .= EEH_HTML::li(
+					EEH_HTML::span(' ' . $event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
+				);
+			}
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'subsections'     => array(
+					'default_hidden_inputs' => $this->reg_step_hidden_inputs(),
+					'extra_hidden_inputs'   => $this->_extra_hidden_inputs(),
+				),
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'sold_out_events.template.php',
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__template_args',
+							array(
+								'sold_out_events'     => $insufficient_space_events,
+								'sold_out_events_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___insufficient_spaces_available__insufficient_space_msg',
+									__(
+										'It appears that the event you were about to make a payment for has sold additional tickets since you first registered, and there are no longer enough spaces left to accommodate your selections. You may continue to pay and secure the available space(s) remaining, or simply cancel if you no longer wish to purchase. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
+										'event_espresso'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * registrations_requiring_pre_approval
+	 *
+	 * @param array $registrations_requiring_pre_approval
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _registrations_requiring_pre_approval($registrations_requiring_pre_approval = array())
+	{
+		$events_requiring_pre_approval = '';
+		foreach ($registrations_requiring_pre_approval as $registration) {
+			if ($registration instanceof EE_Registration && $registration->event() instanceof EE_Event) {
+				$events_requiring_pre_approval[$registration->event()->ID()] = EEH_HTML::li(
+					EEH_HTML::span(
+						'',
+						'',
+						'dashicons dashicons-marker ee-icon-size-16 orange-text'
+					)
+					. EEH_HTML::span($registration->event()->name(), '', 'orange-text')
+				);
+			}
+		}
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'events_requiring_pre_approval.template.php', // layout_template
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___sold_out_events__template_args',
+							array(
+								'events_requiring_pre_approval'     => implode('', $events_requiring_pre_approval),
+								'events_requiring_pre_approval_msg' => apply_filters(
+									'FHEE__EE_SPCO_Reg_Step_Payment_Options___events_requiring_pre_approval__events_requiring_pre_approval_msg',
+									__(
+										'The following events do not require payment at this time and will not be billed during this transaction. Billing will only occur after the attendee has been approved by the event organizer. You will be notified when your registration has been processed. If this is a free event, then no billing will occur.',
+										'event_espresso'
+									)
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _no_payment_required
+	 *
+	 * @param \EE_Event[] $registrations_for_free_events
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _no_payment_required($registrations_for_free_events = array())
+	{
+		// set some defaults
+		$this->checkout->selected_method_of_payment = 'no_payment_required';
+		// generate no_payment_required form
+		return new EE_Form_Section_Proper(
+			array(
+				'layout_strategy' => new EE_Template_Layout(
+					array(
+						'layout_template_file' => SPCO_REG_STEPS_PATH
+												  . $this->_slug
+												  . DS
+												  . 'no_payment_required.template.php', // layout_template
+						'template_args'        => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___no_payment_required__template_args',
+							array(
+								'revisit'                       => $this->checkout->revisit,
+								'registrations'                 => array(),
+								'ticket_count'                  => array(),
+								'registrations_for_free_events' => $registrations_for_free_events,
+								'no_payment_required_msg'       => EEH_HTML::p(
+									__('This is a free event, so no billing will occur.', 'event_espresso')
+								),
+							)
+						),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * _display_payment_options
+	 *
+	 * @param string $transaction_details
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _display_payment_options($transaction_details = '')
+	{
+		// has method_of_payment been set by no-js user?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment();
+		// build payment options form
+		return apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__payment_options_form',
+			new EE_Form_Section_Proper(
+				array(
+					'subsections'     => array(
+						'before_payment_options' => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__before_payment_options',
+							new EE_Form_Section_Proper(
+								array('layout_strategy' => new EE_Div_Per_Section_Layout())
+							)
+						),
+						'payment_options'        => $this->_setup_payment_options(),
+						'after_payment_options'  => apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__after_payment_options',
+							new EE_Form_Section_Proper(
+								array('layout_strategy' => new EE_Div_Per_Section_Layout())
+							)
+						),
+					),
+					'layout_strategy' => new EE_Template_Layout(
+						array(
+							'layout_template_file' => $this->_template,
+							'template_args'        => apply_filters(
+								'FHEE__EE_SPCO_Reg_Step_Payment_Options___display_payment_options__template_args',
+								array(
+									'reg_count'                 => $this->line_item_display->total_items(),
+									'transaction_details'       => $transaction_details,
+									'available_payment_methods' => array(),
+								)
+							),
+						)
+					),
+				)
+			)
+		);
+	}
+
+
+	/**
+	 * _extra_hidden_inputs
+	 *
+	 * @param bool $no_payment_required
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _extra_hidden_inputs($no_payment_required = true)
+	{
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'ee-' . $this->slug() . '-extra-hidden-inputs',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'spco_no_payment_required' => new EE_Hidden_Input(
+						array(
+							'normalization_strategy' => new EE_Boolean_Normalization(),
+							'html_name'              => 'spco_no_payment_required',
+							'html_id'                => 'spco-no-payment-required-payment_options',
+							'default'                => $no_payment_required,
+						)
+					),
+					'spco_transaction_id'      => new EE_Fixed_Hidden_Input(
+						array(
+							'normalization_strategy' => new EE_Int_Normalization(),
+							'html_name'              => 'spco_transaction_id',
+							'html_id'                => 'spco-transaction-id',
+							'default'                => $this->checkout->transaction->ID(),
+						)
+					),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 *    _apply_registration_payments_to_amount_owing
+	 *
+	 * @access protected
+	 * @param array $registrations
+	 */
+	protected function _apply_registration_payments_to_amount_owing(array $registrations)
+	{
+		$payments = array();
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration && $registration->owes_monies_and_can_pay()) {
+				$payments += $registration->registration_payments();
+			}
+		}
+		if (! empty($payments)) {
+			foreach ($payments as $payment) {
+				if ($payment instanceof EE_Registration_Payment) {
+					$this->checkout->amount_owing -= $payment->amount();
+				}
+			}
+		}
+	}
+
+
+	/**
+	 *    _reset_selected_method_of_payment
+	 *
+	 * @access    private
+	 * @param    bool $force_reset
+	 * @return    void
+	 */
+	private function _reset_selected_method_of_payment($force_reset = false)
+	{
+		$reset_payment_method = $force_reset
+			? true
+			: sanitize_text_field(EE_Registry::instance()->REQ->get('reset_payment_method', false));
+		if ($reset_payment_method) {
+			$this->checkout->selected_method_of_payment = null;
+			$this->checkout->payment_method             = null;
+			$this->checkout->billing_form               = null;
+			$this->_save_selected_method_of_payment();
+		}
+	}
+
+
+	/**
+	 * _save_selected_method_of_payment
+	 * stores the selected_method_of_payment in the session
+	 * so that it's available for all subsequent requests including AJAX
+	 *
+	 * @access        private
+	 * @param string $selected_method_of_payment
+	 * @return  void
+	 */
+	private function _save_selected_method_of_payment($selected_method_of_payment = '')
+	{
+		$selected_method_of_payment = ! empty($selected_method_of_payment)
+			? $selected_method_of_payment
+			: $this->checkout->selected_method_of_payment;
+		EE_Registry::instance()->SSN->set_session_data(
+			array('selected_method_of_payment' => $selected_method_of_payment)
+		);
+	}
+
+
+	/**
+	 * _setup_payment_options
+	 *
+	 * @return \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	public function _setup_payment_options()
+	{
+		// load payment method classes
+		$this->checkout->available_payment_methods = $this->_get_available_payment_methods();
+		// switch up header depending on number of available payment methods
+		$payment_method_header     = count($this->checkout->available_payment_methods) > 1
+			? apply_filters(
+				'FHEE__registration_page_payment_options__method_of_payment_hdr',
+				__('Please Select Your Method of Payment', 'event_espresso')
+			)
+			: apply_filters(
+				'FHEE__registration_page_payment_options__method_of_payment_hdr',
+				__('Method of Payment', 'event_espresso')
+			);
+		$available_payment_methods = array(
+			// display the "Payment Method" header
+			'payment_method_header' => new EE_Form_Section_HTML(
+				EEH_HTML::h4($payment_method_header, 'method-of-payment-hdr')
+			),
+		);
+		// the list of actual payment methods ( invoice, paypal, etc ) in a  ( slug => HTML )  format
+		$available_payment_method_options = array();
+		$default_payment_method_option    = array();
+		// additional instructions to be displayed and hidden below payment methods (adding a clearing div to start)
+		$payment_methods_billing_info = array(
+			new EE_Form_Section_HTML(
+				EEH_HTML::div('<br />', '', '', 'clear:both;')
+			),
+		);
+		// loop through payment methods
+		foreach ($this->checkout->available_payment_methods as $payment_method) {
+			if ($payment_method instanceof EE_Payment_Method) {
+				$payment_method_button = EEH_HTML::img(
+					$payment_method->button_url(),
+					$payment_method->name(),
+					'spco-payment-method-' . $payment_method->slug() . '-btn-img',
+					'spco-payment-method-btn-img'
+				);
+				// check if any payment methods are set as default
+				// if payment method is already selected OR nothing is selected and this payment method should be open_by_default
+				if (
+					($this->checkout->selected_method_of_payment === $payment_method->slug())
+					|| (! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
+				) {
+					$this->checkout->selected_method_of_payment = $payment_method->slug();
+					$this->_save_selected_method_of_payment();
+					$default_payment_method_option[$payment_method->slug()] = $payment_method_button;
+				} else {
+					$available_payment_method_options[$payment_method->slug()] = $payment_method_button;
+				}
+				$payment_methods_billing_info[$payment_method->slug()
+											  . '-info'] = $this->_payment_method_billing_info(
+					$payment_method
+				);
+			}
+		}
+		// prepend available_payment_method_options with default_payment_method_option so that it appears first in list of PMs
+		$available_payment_method_options = $default_payment_method_option + $available_payment_method_options;
+		// now generate the actual form  inputs
+		$available_payment_methods['available_payment_methods'] = $this->_available_payment_method_inputs(
+			$available_payment_method_options
+		);
+		$available_payment_methods                              += $payment_methods_billing_info;
+		// build the available payment methods form
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'spco-available-methods-of-payment-dv',
+				'subsections'     => $available_payment_methods,
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+			)
+		);
+	}
+
+
+	/**
+	 * _get_available_payment_methods
+	 *
+	 * @return EE_Payment_Method[]
+	 */
+	protected function _get_available_payment_methods()
+	{
+		if (! empty($this->checkout->available_payment_methods)) {
+			return $this->checkout->available_payment_methods;
+		}
+		$available_payment_methods = array();
+		// load EEM_Payment_Method
+		EE_Registry::instance()->load_model('Payment_Method');
+		/** @type EEM_Payment_Method $EEM_Payment_Method */
+		$EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
+		// get all active payment methods
+		$payment_methods = $EEM_Payment_Method->get_all_for_transaction(
+			$this->checkout->transaction,
+			EEM_Payment_Method::scope_cart
+		);
+		foreach ($payment_methods as $payment_method) {
+			if ($payment_method instanceof EE_Payment_Method) {
+				$available_payment_methods[$payment_method->slug()] = $payment_method;
+			}
+		}
+		return $available_payment_methods;
+	}
+
+
+	/**
+	 *    _available_payment_method_inputs
+	 *
+	 * @access    private
+	 * @param    array $available_payment_method_options
+	 * @return    \EE_Form_Section_Proper
+	 */
+	private function _available_payment_method_inputs($available_payment_method_options = array())
+	{
+		// generate inputs
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'ee-available-payment-method-inputs',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'' => new EE_Radio_Button_Input (
+						$available_payment_method_options,
+						array(
+							'html_name'          => 'selected_method_of_payment',
+							'html_class'         => 'spco-payment-method',
+							'default'            => $this->checkout->selected_method_of_payment,
+							'label_size'         => 11,
+							'enforce_label_size' => true,
+						)
+					),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 *    _payment_method_billing_info
+	 *
+	 * @access    private
+	 * @param    EE_Payment_Method $payment_method
+	 * @return    \EE_Form_Section_Proper
+	 * @throws \EE_Error
+	 */
+	private function _payment_method_billing_info(EE_Payment_Method $payment_method)
+	{
+		$currently_selected = $this->checkout->selected_method_of_payment === $payment_method->slug()
+			? true
+			: false;
+		// generate the billing form for payment method
+		$billing_form                 = $currently_selected
+			? $this->_get_billing_form_for_payment_method($payment_method)
+			: new EE_Form_Section_HTML();
+		$this->checkout->billing_form = $currently_selected
+			? $billing_form
+			: $this->checkout->billing_form;
+		// it's all in the details
+		$info_html = EEH_HTML::h3(
+			__('Important information regarding your payment', 'event_espresso'),
+			'',
+			'spco-payment-method-hdr'
+		);
+		// add some info regarding the step, either from what's saved in the admin,
+		// or a default string depending on whether the PM has a billing form or not
+		if ($payment_method->description()) {
+			$payment_method_info = $payment_method->description();
+		} elseif ($billing_form instanceof EE_Billing_Info_Form) {
+			$payment_method_info = sprintf(
+				__(
+					'Please provide the following billing information, then click the "%1$s" button below in order to proceed.',
+					'event_espresso'
+				),
+				$this->submit_button_text()
+			);
+		} else {
+			$payment_method_info = sprintf(
+				__('Please click the "%1$s" button below in order to proceed.', 'event_espresso'),
+				$this->submit_button_text()
+			);
+		}
+		$info_html .= EEH_HTML::p(
+			apply_filters(
+				'FHEE__EE_SPCO_Reg_Step_Payment_Options___payment_method_billing_info__payment_method_info',
+				$payment_method_info
+			),
+			'',
+			'spco-payment-method-desc ee-attention'
+		);
+		return new EE_Form_Section_Proper(
+			array(
+				'html_id'         => 'spco-payment-method-info-' . $payment_method->slug(),
+				'html_class'      => 'spco-payment-method-info-dv',
+				// only display the selected or default PM
+				'html_style'      => $currently_selected ? '' : 'display:none;',
+				'layout_strategy' => new EE_Div_Per_Section_Layout(),
+				'subsections'     => array(
+					'info'         => new EE_Form_Section_HTML($info_html),
+					'billing_form' => $currently_selected ? $billing_form : new EE_Form_Section_HTML(),
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * get_billing_form_html_for_payment_method
+	 *
+	 * @access public
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function get_billing_form_html_for_payment_method()
+	{
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		$this->checkout->payment_method             = $this->_get_payment_method_for_selected_method_of_payment();
+		if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+			return false;
+		}
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+			false
+		)) {
+			EE_Error::add_success(
+				apply_filters(
+					'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+					sprintf(
+						__(
+							'You have selected "%s" as your method of payment. Please note the important payment information below.',
+							'event_espresso'
+						),
+						$this->checkout->payment_method->name()
+					)
+				)
+			);
+		}
+		// now generate billing form for selected method of payment
+		$payment_method_billing_form = $this->_get_billing_form_for_payment_method($this->checkout->payment_method);
+		// fill form with attendee info if applicable
+		if (
+			$payment_method_billing_form instanceof EE_Billing_Attendee_Info_Form
+			&& $this->checkout->transaction_has_primary_registrant()
+		) {
+			$payment_method_billing_form->populate_from_attendee(
+				$this->checkout->transaction->primary_registration()->attendee()
+			);
+		}
+		// and debug content
+		if (
+			$payment_method_billing_form instanceof EE_Billing_Info_Form
+			&& $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
+		) {
+			$payment_method_billing_form = $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
+				$payment_method_billing_form
+			);
+		}
+		$billing_info = $payment_method_billing_form instanceof EE_Form_Section_Proper
+			? $payment_method_billing_form->get_html()
+			: '';
+		$this->checkout->json_response->set_return_data(array('payment_method_info' => $billing_info));
+		// localize validation rules for main form
+		$this->checkout->current_step->reg_form->localize_validation_rules();
+		$this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
+		return true;
+	}
+
+
+	/**
+	 * _get_billing_form_for_payment_method
+	 *
+	 * @access private
+	 * @param EE_Payment_Method $payment_method
+	 * @return \EE_Billing_Info_Form|\EE_Form_Section_HTML
+	 * @throws \EE_Error
+	 */
+	private function _get_billing_form_for_payment_method(EE_Payment_Method $payment_method)
+	{
+		$billing_form = $payment_method->type_obj()->billing_form(
+			$this->checkout->transaction,
+			array('amount_owing' => $this->checkout->amount_owing)
+		);
+		if ($billing_form instanceof EE_Billing_Info_Form) {
+			if (
+				apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+					false
+				)
+				&& EE_Registry::instance()->REQ->is_set('payment_method')
+			) {
+				EE_Error::add_success(
+					apply_filters(
+						'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+						sprintf(
+							__(
+								'You have selected "%s" as your method of payment. Please note the important payment information below.',
+								'event_espresso'
+							),
+							$payment_method->name()
+						)
+					)
+				);
+			}
+			return apply_filters(
+				'FHEE__EE_SPCO_Reg_Step_Payment_Options___get_billing_form_for_payment_method__billing_form',
+				$billing_form,
+				$payment_method
+			);
+		}
+		// no actual billing form, so return empty HTML form section
+		return new EE_Form_Section_HTML();
+	}
+
+
+	/**
+	 * _get_selected_method_of_payment
+	 *
+	 * @access private
+	 * @param boolean $required whether to throw an error if the "selected_method_of_payment"
+	 *                          is not found in the incoming request
+	 * @param string  $request_param
+	 * @return NULL|string
+	 * @throws \EE_Error
+	 */
+	private function _get_selected_method_of_payment(
+		$required = false,
+		$request_param = 'selected_method_of_payment'
+	) {
+		// is selected_method_of_payment set in the request ?
+		$selected_method_of_payment = EE_Registry::instance()->REQ->get($request_param, false);
+		if ($selected_method_of_payment) {
+			// sanitize it
+			$selected_method_of_payment = is_array($selected_method_of_payment)
+				? array_shift($selected_method_of_payment)
+				: $selected_method_of_payment;
+			$selected_method_of_payment = sanitize_text_field($selected_method_of_payment);
+			// store it in the session so that it's available for all subsequent requests including AJAX
+			$this->_save_selected_method_of_payment($selected_method_of_payment);
+		} else {
+			// or is is set in the session ?
+			$selected_method_of_payment = EE_Registry::instance()->SSN->get_session_data(
+				'selected_method_of_payment'
+			);
+		}
+		// do ya really really gotta have it?
+		if (empty($selected_method_of_payment) && $required) {
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'The selected method of payment could not be determined.%sPlease ensure that you have selected one before proceeding.%sIf you continue to experience difficulties, then refresh your browser and try again, or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		return $selected_method_of_payment;
+	}
+
+
+
+
+
+
+	/********************************************************************************************************/
+	/***********************************  SWITCH PAYMENT METHOD  ************************************/
+	/********************************************************************************************************/
+	/**
+	 * switch_payment_method
+	 *
+	 * @access public
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	public function switch_payment_method()
+	{
+		if (! $this->_verify_payment_method_is_set()) {
+			return false;
+		}
+		if (apply_filters(
+			'FHEE__EE_SPCO_Reg_Step_Payment_Options__registration_checkout__selected_payment_method__display_success',
+			false
+		)) {
+			EE_Error::add_success(
+				apply_filters(
+					'FHEE__Single_Page_Checkout__registration_checkout__selected_payment_method',
+					sprintf(
+						__(
+							'You have selected "%s" as your method of payment. Please note the important payment information below.',
+							'event_espresso'
+						),
+						$this->checkout->payment_method->name()
+					)
+				)
+			);
+		}
+		// generate billing form for selected method of payment if it hasn't been done already
+		if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+		}
+		// fill form with attendee info if applicable
+		if (
+		apply_filters(
+			'FHEE__populate_billing_form_fields_from_attendee',
+			(
+				$this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
+				&& $this->checkout->transaction_has_primary_registrant()
+			),
+			$this->checkout->billing_form,
+			$this->checkout->transaction
+		)
+		) {
+			$this->checkout->billing_form->populate_from_attendee(
+				$this->checkout->transaction->primary_registration()->attendee()
+			);
+		}
+		// and debug content
+		if ($this->checkout->billing_form instanceof EE_Billing_Info_Form
+			&& $this->checkout->payment_method->type_obj() instanceof EE_PMT_Base
+		) {
+			$this->checkout->billing_form = $this->checkout->payment_method->type_obj()->apply_billing_form_debug_settings(
+				$this->checkout->billing_form
+			);
+		}
+		// get html and validation rules for form
+		if ($this->checkout->billing_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->json_response->set_return_data(
+				array('payment_method_info' => $this->checkout->billing_form->get_html())
+			);
+			// localize validation rules for main form
+			$this->checkout->billing_form->localize_validation_rules(true);
+			$this->checkout->json_response->add_validation_rules(EE_Form_Section_Proper::js_localization());
+		} else {
+			$this->checkout->json_response->set_return_data(array('payment_method_info' => ''));
+		}
+		//prevents advancement to next step
+		$this->checkout->continue_reg = false;
+		return true;
+	}
+
+
+	/**
+	 * _verify_payment_method_is_set
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	protected function _verify_payment_method_is_set()
+	{
+		// generate billing form for selected method of payment if it hasn't been done already
+		if (empty($this->checkout->selected_method_of_payment)) {
+			// how have they chosen to pay?
+			$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		} else {
+			// choose your own adventure based on method_of_payment
+			switch ($this->checkout->selected_method_of_payment) {
+				case 'events_sold_out' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__sold_out_events_msg',
+							__('It appears that the event you were about to make a payment for has sold out since this form first loaded. Please contact the event administrator if you believe this is an error.',
+								'event_espresso')
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				case 'payments_closed' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__payments_closed_msg',
+							__('It appears that the event you were about to make a payment for is not accepting payments at this time. Please contact the event administrator if you believe this is an error.',
+								'event_espresso')
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				case 'no_payment_required' :
+					EE_Error::add_attention(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___verify_payment_method_is_set__no_payment_required_msg',
+							__('It appears that the event you were about to make a payment for does not require payment. Please contact the event administrator if you believe this is an error.',
+								'event_espresso')
+						),
+						__FILE__, __FUNCTION__, __LINE__
+					);
+					return false;
+					break;
+				default:
+			}
+		}
+		// verify payment method
+		if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+			// get payment method for selected method of payment
+			$this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment();
+		}
+		return $this->checkout->payment_method instanceof EE_Payment_Method ? true : false;
+	}
+
+
+
+	/********************************************************************************************************/
+	/***************************************  SAVE PAYER DETAILS  ****************************************/
+	/********************************************************************************************************/
+	/**
+	 * save_payer_details_via_ajax
+	 *
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	public function save_payer_details_via_ajax()
+	{
+		if (! $this->_verify_payment_method_is_set()) {
+			return;
+		}
+		// generate billing form for selected method of payment if it hasn't been done already
+		if ($this->checkout->payment_method->type_obj()->has_billing_form()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+		}
+		// generate primary attendee from payer info if applicable
+		if (! $this->checkout->transaction_has_primary_registrant()) {
+			$attendee = $this->_create_attendee_from_request_data();
+			if ($attendee instanceof EE_Attendee) {
+				foreach ($this->checkout->transaction->registrations() as $registration) {
+					if ($registration->is_primary_registrant()) {
+						$this->checkout->primary_attendee_obj = $attendee;
+						$registration->_add_relation_to($attendee, 'Attendee');
+						$registration->set_attendee_id($attendee->ID());
+						$registration->update_cache_after_object_save('Attendee', $attendee);
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * create_attendee_from_request_data
+	 * uses info from alternate GET or POST data (such as AJAX) to create a new attendee
+	 *
+	 * @return \EE_Attendee
+	 * @throws \EE_Error
+	 */
+	protected function _create_attendee_from_request_data()
+	{
+		// get State ID
+		$STA_ID = ! empty($_REQUEST['state']) ? sanitize_text_field($_REQUEST['state']) : '';
+		if (! empty($STA_ID)) {
+			// can we get state object from name ?
+			EE_Registry::instance()->load_model('State');
+			$state  = EEM_State::instance()->get_col(array(array('STA_name' => $STA_ID), 'limit' => 1), 'STA_ID');
+			$STA_ID = is_array($state) && ! empty($state) ? reset($state) : $STA_ID;
+		}
+		// get Country ISO
+		$CNT_ISO = ! empty($_REQUEST['country']) ? sanitize_text_field($_REQUEST['country']) : '';
+		if (! empty($CNT_ISO)) {
+			// can we get country object from name ?
+			EE_Registry::instance()->load_model('Country');
+			$country = EEM_Country::instance()->get_col(
+				array(array('CNT_name' => $CNT_ISO), 'limit' => 1),
+				'CNT_ISO'
+			);
+			$CNT_ISO = is_array($country) && ! empty($country) ? reset($country) : $CNT_ISO;
+		}
+		// grab attendee data
+		$attendee_data = array(
+			'ATT_fname'    => ! empty($_REQUEST['first_name']) ? sanitize_text_field($_REQUEST['first_name']) : '',
+			'ATT_lname'    => ! empty($_REQUEST['last_name']) ? sanitize_text_field($_REQUEST['last_name']) : '',
+			'ATT_email'    => ! empty($_REQUEST['email']) ? sanitize_email($_REQUEST['email']) : '',
+			'ATT_address'  => ! empty($_REQUEST['address']) ? sanitize_text_field($_REQUEST['address']) : '',
+			'ATT_address2' => ! empty($_REQUEST['address2']) ? sanitize_text_field($_REQUEST['address2']) : '',
+			'ATT_city'     => ! empty($_REQUEST['city']) ? sanitize_text_field($_REQUEST['city']) : '',
+			'STA_ID'       => $STA_ID,
+			'CNT_ISO'      => $CNT_ISO,
+			'ATT_zip'      => ! empty($_REQUEST['zip']) ? sanitize_text_field($_REQUEST['zip']) : '',
+			'ATT_phone'    => ! empty($_REQUEST['phone']) ? sanitize_text_field($_REQUEST['phone']) : '',
+		);
+		// validate the email address since it is the most important piece of info
+		if (empty($attendee_data['ATT_email']) || $attendee_data['ATT_email'] !== $_REQUEST['email']) {
+			EE_Error::add_error(
+				__('An invalid email address was submitted.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		// does this attendee already exist in the db ? we're searching using a combination of first name, last name, AND email address
+		if (! empty($attendee_data['ATT_fname'])
+			&& ! empty($attendee_data['ATT_lname'])
+			&& ! empty($attendee_data['ATT_email'])
+		) {
+			$existing_attendee = EE_Registry::instance()->LIB->EEM_Attendee->find_existing_attendee(
+				array(
+					'ATT_fname' => $attendee_data['ATT_fname'],
+					'ATT_lname' => $attendee_data['ATT_lname'],
+					'ATT_email' => $attendee_data['ATT_email'],
+				)
+			);
+			if ($existing_attendee instanceof EE_Attendee) {
+				return $existing_attendee;
+			}
+		}
+		// no existing attendee? kk let's create a new one
+		// kinda lame, but we need a first and last name to create an attendee, so use the email address if those don't exist
+		$attendee_data['ATT_fname'] = ! empty($attendee_data['ATT_fname'])
+			? $attendee_data['ATT_fname']
+			: $attendee_data['ATT_email'];
+		$attendee_data['ATT_lname'] = ! empty($attendee_data['ATT_lname'])
+			? $attendee_data['ATT_lname']
+			: $attendee_data['ATT_email'];
+		return EE_Attendee::new_instance($attendee_data);
+	}
+
+
+
+	/********************************************************************************************************/
+	/****************************************  PROCESS REG STEP  *****************************************/
+	/********************************************************************************************************/
+	/**
+	 * process_reg_step
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function process_reg_step()
+	{
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->checkout->transaction->is_free()
+			? 'no_payment_required'
+			: $this->_get_selected_method_of_payment(true);
+		// choose your own adventure based on method_of_payment
+		switch ($this->checkout->selected_method_of_payment) {
+
+			case 'events_sold_out' :
+				$this->checkout->redirect     = true;
+				$this->checkout->redirect_url = $this->checkout->cancel_page_url;
+				$this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
+				// mark this reg step as completed
+				$this->set_completed();
+				return false;
+				break;
+
+			case 'payments_closed' :
+				if (apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__payments_closed__display_success',
+					false
+				)) {
+					EE_Error::add_success(
+						__('no payment required at this time.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+				// mark this reg step as completed
+				$this->set_completed();
+				return true;
+				break;
+
+			case 'no_payment_required' :
+				if (apply_filters(
+					'FHEE__EE_SPCO_Reg_Step_Payment_Options__process_reg_step__no_payment_required__display_success',
+					false
+				)) {
+					EE_Error::add_success(
+						__('no payment required.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+				// mark this reg step as completed
+				$this->set_completed();
+				return true;
+				break;
+
+			default:
+				$registrations         = EE_Registry::instance()->SSN->checkout()->transaction->registrations(
+					EE_Registry::instance()->SSN->checkout()->reg_cache_where_params
+				);
+				$ejected_registrations = EE_SPCO_Reg_Step_Payment_Options::find_registrations_that_lost_their_space(
+					$registrations,
+					EE_Registry::instance()->SSN->checkout()->revisit
+				);
+				// calculate difference between the two arrays
+				$registrations = array_diff($registrations, $ejected_registrations);
+				if (empty($registrations)) {
+					$this->_redirect_because_event_sold_out();
+					return false;
+				}
+				$payment_successful = $this->_process_payment();
+				if ($payment_successful) {
+					$this->checkout->continue_reg = true;
+					$this->_maybe_set_completed($this->checkout->payment_method);
+				} else {
+					$this->checkout->continue_reg = false;
+				}
+				return $payment_successful;
+
+		}
+	}
+
+
+	/**
+	 * _redirect_because_event_sold_out
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _redirect_because_event_sold_out()
+	{
+		$this->checkout->continue_reg = false;
+		// set redirect URL
+		$this->checkout->redirect_url = add_query_arg(
+			array('e_reg_url_link' => $this->checkout->reg_url_link),
+			$this->checkout->current_step->reg_step_url()
+		);
+		$this->checkout->json_response->set_redirect_url($this->checkout->redirect_url);
+	}
+
+
+	/**
+	 * _maybe_set_completed
+	 *
+	 * @access protected
+	 * @param \EE_Payment_Method $payment_method
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	protected function _maybe_set_completed(EE_Payment_Method $payment_method)
+	{
+		switch ($payment_method->type_obj()->payment_occurs()) {
+			case EE_PMT_Base::offsite :
+				break;
+			case EE_PMT_Base::onsite :
+			case EE_PMT_Base::offline :
+				// mark this reg step as completed
+				$this->set_completed();
+				break;
+		}
+	}
+
+
+	/**
+	 *    update_reg_step
+	 *    this is the final step after a user  revisits the site to retry a payment
+	 *
+	 * @return boolean
+	 * @throws \EE_Error
+	 */
+	public function update_reg_step()
+	{
+		$success = true;
+		// if payment required
+		if ($this->checkout->transaction->total() > 0) {
+			do_action(
+				'AHEE__EE_Single_Page_Checkout__process_finalize_registration__before_gateway',
+				$this->checkout->transaction
+			);
+			// attempt payment via payment method
+			$success = $this->process_reg_step();
+		}
+		if ($success && ! $this->checkout->redirect) {
+			$this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn(
+				$this->checkout->transaction->ID()
+			);
+			// set return URL
+			$this->checkout->redirect_url = add_query_arg(
+				array('e_reg_url_link' => $this->checkout->reg_url_link),
+				$this->checkout->thank_you_page_url
+			);
+		}
+		return $success;
+	}
+
+
+	/**
+	 *    _process_payment
+	 *
+	 * @access private
+	 * @return    bool
+	 * @throws \EE_Error
+	 */
+	private function _process_payment()
+	{
+		// basically confirm that the event hasn't sold out since they hit the page
+		if (! $this->_last_second_ticket_verifications()) {
+			return false;
+		}
+		// ya gotta make a choice man
+		if (empty($this->checkout->selected_method_of_payment)) {
+			$this->checkout->json_response->set_plz_select_method_of_payment(
+				__('Please select a method of payment before proceeding.', 'event_espresso')
+			);
+			return false;
+		}
+		// get EE_Payment_Method object
+		if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+			return false;
+		}
+		// setup billing form
+		if ($this->checkout->payment_method->is_on_site()) {
+			$this->checkout->billing_form = $this->_get_billing_form_for_payment_method(
+				$this->checkout->payment_method
+			);
+			// bad billing form ?
+			if (! $this->_billing_form_is_valid()) {
+				return false;
+			}
+		}
+		// ensure primary registrant has been fully processed
+		if (! $this->_setup_primary_registrant_prior_to_payment()) {
+			return false;
+		}
+		// if session is close to expiring (under 10 minutes by default)
+		if ((time() - EE_Registry::instance()->SSN->expiration()) < EE_Registry::instance()->SSN->extension()) {
+			// add some time to session expiration so that payment can be completed
+			EE_Registry::instance()->SSN->extend_expiration();
+		}
+		/** @type EE_Transaction_Processor $transaction_processor */
+		//$transaction_processor = EE_Registry::instance()->load_class( 'Transaction_Processor' );
+		// in case a registrant leaves to an Off-Site Gateway and never returns, we want to approve any registrations for events with a default reg status of Approved
+		//$transaction_processor->toggle_registration_statuses_for_default_approved_events( $this->checkout->transaction, $this->checkout->reg_cache_where_params );
+		// attempt payment
+		$payment = $this->_attempt_payment($this->checkout->payment_method);
+		// process results
+		$payment = $this->_validate_payment($payment);
+		$payment = $this->_post_payment_processing($payment);
+		// verify payment
+		if ($payment instanceof EE_Payment) {
+			// store that for later
+			$this->checkout->payment = $payment;
+			// we can also consider the TXN to not have been failed, so temporarily upgrade it's status to abandoned
+			$this->checkout->transaction->toggle_failed_transaction_status();
+			$payment_status = $payment->status();
+			if (
+				$payment_status === EEM_Payment::status_id_approved
+				|| $payment_status === EEM_Payment::status_id_pending
+			) {
+				return true;
+			} else {
+				return false;
+			}
+		} else if ($payment === true) {
+			// please note that offline payment methods will NOT make a payment,
+			// but instead just mark themselves as the PMD_ID on the transaction, and return true
+			$this->checkout->payment = $payment;
+			return true;
+		}
+		// where's my money?
+		return false;
+	}
+
+
+	/**
+	 * _last_second_ticket_verifications
+	 *
+	 * @access public
+	 * @return bool
+	 */
+	protected function _last_second_ticket_verifications()
+	{
+		// don't bother re-validating if not a return visit
+		if (! $this->checkout->revisit) {
+			return true;
+		}
+		$registrations = $this->checkout->transaction->registrations();
+		if (empty($registrations)) {
+			return false;
+		}
+		foreach ($registrations as $registration) {
+			if ($registration instanceof EE_Registration) {
+				$event = $registration->event_obj();
+				if ($event instanceof EE_Event && $event->is_sold_out(true)) {
+					EE_Error::add_error(
+						apply_filters(
+							'FHEE__EE_SPCO_Reg_Step_Payment_Options___last_second_ticket_verifications__sold_out_events_msg',
+							sprintf(
+								__('It appears that the %1$s event that you were about to make a payment for has sold out since you first registered and/or arrived at this page. Please refresh the page and try again. If you have already made a partial payment towards this event, please contact the event administrator for a refund.',
+									'event_espresso'),
+								$event->name()
+							)
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return false;
+				}
+			}
+		}
+		return true;
+	}
+
+
+	/**
+	 * redirect_form
+	 *
+	 * @access public
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	public function redirect_form()
+	{
+		$payment_method_billing_info = $this->_payment_method_billing_info(
+			$this->_get_payment_method_for_selected_method_of_payment()
+		);
+		$html                        = $payment_method_billing_info->get_html();
+		$html                        .= $this->checkout->redirect_form;
+		EE_Registry::instance()->REQ->add_output($html);
+		return true;
+	}
+
+
+	/**
+	 * _billing_form_is_valid
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _billing_form_is_valid()
+	{
+		if (! $this->checkout->payment_method->type_obj()->has_billing_form()) {
+			return true;
+		}
+		if ($this->checkout->billing_form instanceof EE_Billing_Info_Form) {
+			if ($this->checkout->billing_form->was_submitted()) {
+				$this->checkout->billing_form->receive_form_submission();
+				if ($this->checkout->billing_form->is_valid()) {
+					return true;
+				}
+				$validation_errors = $this->checkout->billing_form->get_validation_errors_accumulated();
+				$error_strings     = array();
+				foreach ($validation_errors as $validation_error) {
+					if ($validation_error instanceof EE_Validation_Error) {
+						$form_section = $validation_error->get_form_section();
+						if ($form_section instanceof EE_Form_Input_Base) {
+							$label = $form_section->html_label_text();
+						} elseif ($form_section instanceof EE_Form_Section_Base) {
+							$label = $form_section->name();
+						} else {
+							$label = __('Validation Error', 'event_espresso');
+						}
+						$error_strings[] = sprintf('%1$s: %2$s', $label, $validation_error->getMessage());
+					}
+				}
+				EE_Error::add_error(
+					sprintf(
+						__(
+							'One or more billing form inputs are invalid and require correction before proceeding. %1$s %2$s',
+							'event_espresso'
+						),
+						'<br/>',
+						implode('<br/>', $error_strings)
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			} else {
+				EE_Error::add_error(
+					__(
+						'The billing form was not submitted or something prevented it\'s submission.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(
+				__('The submitted billing form is invalid possibly due to a technical reason.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return false;
+	}
+
+
+	/**
+	 * _setup_primary_registrant_prior_to_payment
+	 * ensures that the primary registrant has a valid attendee object created with the critical details populated
+	 * (first & last name & email) and that both the transaction object and primary registration object have been saved
+	 * plz note that any other registrations will NOT be saved at this point (because they may not have any details
+	 * yet)
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _setup_primary_registrant_prior_to_payment()
+	{
+		// check if transaction has a primary registrant and that it has a related Attendee object
+		// if not, then we need to at least gather some primary registrant data before attempting payment
+		if (
+			$this->checkout->billing_form instanceof EE_Billing_Attendee_Info_Form
+			&& ! $this->checkout->transaction_has_primary_registrant()
+			&& ! $this->_capture_primary_registration_data_from_billing_form()
+		) {
+			return false;
+		}
+		// because saving an object clears it's cache, we need to do the chevy shuffle
+		// grab the primary_registration object
+		$primary_registration = $this->checkout->transaction->primary_registration();
+		// at this point we'll consider a TXN to not have been failed
+		$this->checkout->transaction->toggle_failed_transaction_status();
+		// save the TXN ( which clears cached copy of primary_registration)
+		$this->checkout->transaction->save();
+		// grab TXN ID and save it to the primary_registration
+		$primary_registration->set_transaction_id($this->checkout->transaction->ID());
+		// save what we have so far
+		$primary_registration->save();
+		return true;
+	}
+
+
+	/**
+	 * _capture_primary_registration_data_from_billing_form
+	 *
+	 * @access private
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _capture_primary_registration_data_from_billing_form()
+	{
+		// convert billing form data into an attendee
+		$this->checkout->primary_attendee_obj = $this->checkout->billing_form->create_attendee_from_billing_form_data();
+		if (! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'The billing form details could not be used for attendee details due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		$primary_registration = $this->checkout->transaction->primary_registration();
+		if (! $primary_registration instanceof EE_Registration) {
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'The primary registrant for this transaction could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		if (! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
+			  instanceof
+			  EE_Attendee
+		) {
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'The primary registrant could not be associated with this transaction due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		/** @type EE_Registration_Processor $registration_processor */
+		$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+		// at this point, we should have enough details about the registrant to consider the registration NOT incomplete
+		$registration_processor->toggle_incomplete_registration_status_to_default($primary_registration);
+		return true;
+	}
+
+
+	/**
+	 * _get_payment_method_for_selected_method_of_payment
+	 * retrieves a valid payment method
+	 *
+	 * @access public
+	 * @return \EE_Payment_Method
+	 * @throws \EE_Error
+	 */
+	private function _get_payment_method_for_selected_method_of_payment()
+	{
+		if ($this->checkout->selected_method_of_payment === 'events_sold_out') {
+			$this->_redirect_because_event_sold_out();
+			return null;
+		}
+		// get EE_Payment_Method object
+		if (isset($this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment])) {
+			$payment_method = $this->checkout->available_payment_methods[$this->checkout->selected_method_of_payment];
+		} else {
+			// load EEM_Payment_Method
+			EE_Registry::instance()->load_model('Payment_Method');
+			/** @type EEM_Payment_Method $EEM_Payment_Method */
+			$EEM_Payment_Method = EE_Registry::instance()->LIB->EEM_Payment_Method;
+			$payment_method     = $EEM_Payment_Method->get_one_by_slug($this->checkout->selected_method_of_payment);
+		}
+		// verify $payment_method
+		if (! $payment_method instanceof EE_Payment_Method) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'The selected method of payment could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		// and verify it has a valid Payment_Method Type object
+		if (! $payment_method->type_obj() instanceof EE_PMT_Base) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'A valid payment method could not be determined due to a technical issue.%sPlease try again or contact %s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return null;
+		}
+		return $payment_method;
+	}
+
+
+	/**
+	 *    _attempt_payment
+	 *
+	 * @access    private
+	 * @type    EE_Payment_Method $payment_method
+	 * @return    mixed    EE_Payment | boolean
+	 * @throws \EE_Error
+	 */
+	private function _attempt_payment(EE_Payment_Method $payment_method)
+	{
+		$payment = null;
+		$this->checkout->transaction->save();
+		$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+		if (! $payment_processor instanceof EE_Payment_Processor) {
+			return false;
+		}
+		try {
+			$payment_processor->set_revisit($this->checkout->revisit);
+			// generate payment object
+			$payment = $payment_processor->process_payment(
+				$payment_method,
+				$this->checkout->transaction,
+				$this->checkout->amount_owing,
+				$this->checkout->billing_form,
+				$this->_get_return_url($payment_method),
+				'CART',
+				$this->checkout->admin_request,
+				true,
+				$this->reg_step_url()
+			);
+		} catch (Exception $e) {
+			$this->_handle_payment_processor_exception($e);
+		}
+		return $payment;
+	}
+
+
+	/**
+	 * _handle_payment_processor_exception
+	 *
+	 * @access protected
+	 * @param \Exception $e
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	protected function _handle_payment_processor_exception(Exception $e)
+	{
+		EE_Error::add_error(
+			sprintf(
+				__(
+					'The payment could not br processed due to a technical issue.%1$sPlease try again or contact %2$s for assistance.||The following Exception was thrown in %4$s on line %5$s:%1$s%3$s',
+					'event_espresso'
+				),
+				'<br/>',
+				EE_Registry::instance()->CFG->organization->get_pretty('email'),
+				$e->getMessage(),
+				$e->getFile(),
+				$e->getLine()
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+	}
+
+
+	/**
+	 * _get_return_url
+	 *
+	 * @access protected
+	 * @param \EE_Payment_Method $payment_method
+	 * @return string
+	 * @throws \EE_Error
+	 */
+	protected function _get_return_url(EE_Payment_Method $payment_method)
+	{
+		$return_url = '';
+		switch ($payment_method->type_obj()->payment_occurs()) {
+			case EE_PMT_Base::offsite :
+				$return_url = add_query_arg(
+					array(
+						'action'                     => 'process_gateway_response',
+						'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+						'spco_txn'                   => $this->checkout->transaction->ID(),
+					),
+					$this->reg_step_url()
+				);
+				break;
+			case EE_PMT_Base::onsite :
+			case EE_PMT_Base::offline :
+				$return_url = $this->checkout->next_step->reg_step_url();
+				break;
+		}
+		return $return_url;
+	}
+
+
+	/**
+	 * _validate_payment
+	 *
+	 * @access private
+	 * @param EE_Payment $payment
+	 * @return EE_Payment | FALSE
+	 * @throws \EE_Error
+	 */
+	private function _validate_payment($payment = null)
+	{
+		if ($this->checkout->payment_method->is_off_line()) {
+			return true;
+		}
+		// verify payment object
+		if (! $payment instanceof EE_Payment) {
+			// not a payment
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'A valid payment was not generated due to a technical issue.%1$sPlease try again or contact %2$s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		return $payment;
+	}
+
+
+	/**
+	 * _post_payment_processing
+	 *
+	 * @access private
+	 * @param EE_Payment|bool $payment
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _post_payment_processing($payment = null)
+	{
+		// Off-Line payment?
+		if ($payment === true) {
+			//$this->_setup_redirect_for_next_step();
+			return true;
+			// On-Site payment?
+		} else if ($this->checkout->payment_method->is_on_site()) {
+			if (! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
+				//$this->_setup_redirect_for_next_step();
+				$this->checkout->continue_reg = false;
+			}
+			// Off-Site payment?
+		} else if ($this->checkout->payment_method->is_off_site()) {
+			// if a payment object was made and it specifies a redirect url, then we'll setup that redirect info
+			if ($payment instanceof EE_Payment && $payment->redirect_url()) {
+				do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->redirect_url(), '$payment->redirect_url()');
+				$this->checkout->redirect      = true;
+				$this->checkout->redirect_form = $payment->redirect_form();
+				$this->checkout->redirect_url  = $this->reg_step_url('redirect_form');
+				// set JSON response
+				$this->checkout->json_response->set_redirect_form($this->checkout->redirect_form);
+				// set cron job for finalizing the TXN
+				// in case the user does not return from the off-site gateway
+				EE_Cron_Tasks::schedule_finalize_abandoned_transactions_check(
+					EE_Registry::instance()->SSN->expiration() + 1,
+					$this->checkout->transaction->ID()
+				);
+				// and lastly, let's bump the payment status to pending
+				$payment->set_status(EEM_Payment::status_id_pending);
+				$payment->save();
+			} else {
+				// not a payment
+				$this->checkout->continue_reg = false;
+				EE_Error::add_error(
+					sprintf(
+						__(
+							'It appears the Off Site Payment Method was not configured properly.%sPlease try again or contact %s for assistance.',
+							'event_espresso'
+						),
+						'<br/>',
+						EE_Registry::instance()->CFG->organization->get_pretty('email')
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			// ummm ya... not Off-Line, not On-Site, not off-Site ????
+			$this->checkout->continue_reg = false;
+			return false;
+		}
+		return $payment;
+	}
+
+
+
+	/**
+	 *    _setup_redirect_for_next_step
+	 *
+	 * @access private
+	 * @return    void
+	 */
+	//private function _setup_redirect_for_next_step() {
+	//$this->checkout->redirect = TRUE;
+	//$this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
+	// set JSON response
+	//$this->checkout->json_response->set_redirect_url( $this->checkout->redirect_url );
+	//}
+	/**
+	 *    _process_payment_status
+	 *
+	 * @access private
+	 * @type    EE_Payment $payment
+	 * @param string       $payment_occurs
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _process_payment_status($payment, $payment_occurs = EE_PMT_Base::offline)
+	{
+		// off-line payment? carry on
+		if ($payment_occurs === EE_PMT_Base::offline) {
+			return true;
+		}
+		// verify payment validity
+		if ($payment instanceof EE_Payment) {
+			do_action('AHEE_log', __CLASS__, __FUNCTION__, $payment->status(), '$payment->status()');
+			$msg = $payment->gateway_response();
+			// check results
+			switch ($payment->status()) {
+				// good payment
+				case EEM_Payment::status_id_approved :
+					EE_Error::add_success(
+						__('Your payment was processed successfully.', 'event_espresso'),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+					return true;
+					break;
+				// slow payment
+				case EEM_Payment::status_id_pending :
+					if (empty($msg)) {
+						$msg = __(
+							'Your payment appears to have been processed successfully, but the Instant Payment Notification has not yet been received. It should arrive shortly.',
+							'event_espresso'
+						);
+					}
+					EE_Error::add_success($msg, __FILE__, __FUNCTION__, __LINE__);
+					return true;
+					break;
+				// don't wanna payment
+				case EEM_Payment::status_id_cancelled :
+					if (empty($msg)) {
+						$msg = _n(
+							'Payment cancelled. Please try again.',
+							'Payment cancelled. Please try again or select another method of payment.',
+							count($this->checkout->available_payment_methods),
+							'event_espresso'
+						);
+					}
+					EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
+					return false;
+					break;
+				// not enough payment
+				case EEM_Payment::status_id_declined :
+					if (empty($msg)) {
+						$msg = _n(
+							'We\'re sorry but your payment was declined. Please try again.',
+							'We\'re sorry but your payment was declined. Please try again or select another method of payment.',
+							count($this->checkout->available_payment_methods),
+							'event_espresso'
+						);
+					}
+					EE_Error::add_attention($msg, __FILE__, __FUNCTION__, __LINE__);
+					return false;
+					break;
+				// bad payment
+				case EEM_Payment::status_id_failed :
+					if (! empty($msg)) {
+						EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+						return false;
+					}
+					// default to error below
+					break;
+			}
+		}
+		// off-site payment gateway responses are too unreliable, so let's just assume that
+		// the payment processing is just running slower than the registrant's request
+		if ($payment_occurs === EE_PMT_Base::offsite) {
+			return true;
+		}
+		EE_Error::add_error(
+			sprintf(
+				__(
+					'Your payment could not be processed successfully due to a technical issue.%sPlease try again or contact %s for assistance.',
+					'event_espresso'
+				),
+				'<br/>',
+				EE_Registry::instance()->CFG->organization->get_pretty('email')
+			),
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		return false;
+	}
+
+
+
+
+
+
+	/********************************************************************************************************/
+	/**********************************  PROCESS GATEWAY RESPONSE  **********************************/
+	/********************************************************************************************************/
+	/**
+	 * process_gateway_response
+	 * this is the return point for Off-Site Payment Methods
+	 * It will attempt to "handle the IPN" if it appears that this has not already occurred,
+	 * otherwise, it will load up the last payment made for the TXN.
+	 * If the payment retrieved looks good, it will then either:
+	 *    complete the current step and allow advancement to the next reg step
+	 *        or present the payment options again
+	 *
+	 * @access private
+	 * @return EE_Payment | FALSE
+	 * @throws \EE_Error
+	 */
+	public function process_gateway_response()
+	{
+		$payment = null;
+		// how have they chosen to pay?
+		$this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
+		// get EE_Payment_Method object
+		if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+			$this->checkout->continue_reg = false;
+			return false;
+		}
+		if (! $this->checkout->payment_method->is_off_site()) {
+			return false;
+		}
+		$this->_validate_offsite_return();
+		// DEBUG LOG
+		//$this->checkout->log(
+		//	__CLASS__, __FUNCTION__, __LINE__,
+		//	array(
+		//		'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+		//		'payment_method' => $this->checkout->payment_method,
+		//	),
+		//	true
+		//);
+		// verify TXN
+		if ($this->checkout->transaction instanceof EE_Transaction) {
+			$gateway = $this->checkout->payment_method->type_obj()->get_gateway();
+			if (! $gateway instanceof EE_Offsite_Gateway) {
+				$this->checkout->continue_reg = false;
+				return false;
+			}
+			$payment = $this->_process_off_site_payment($gateway);
+			$payment = $this->_process_cancelled_payments($payment);
+			$payment = $this->_validate_payment($payment);
+			// if payment was not declined by the payment gateway or cancelled by the registrant
+			if ($this->_process_payment_status($payment, EE_PMT_Base::offsite)) {
+				//$this->_setup_redirect_for_next_step();
+				// store that for later
+				$this->checkout->payment = $payment;
+				// mark this reg step as completed, as long as gateway doesn't use a separate IPN request,
+				// because we will complete this step during the IPN processing then
+				if ($gateway instanceof EE_Offsite_Gateway && ! $this->handle_IPN_in_this_request()) {
+					$this->set_completed();
+				}
+				return true;
+			}
+		}
+		// DEBUG LOG
+		//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
+		//	array( 'payment' => $payment )
+		//);
+		$this->checkout->continue_reg = false;
+		return false;
+	}
+
+
+	/**
+	 * _validate_return
+	 *
+	 * @access private
+	 * @return void
+	 * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
+	 * @throws \EE_Error
+	 */
+	private function _validate_offsite_return()
+	{
+		$TXN_ID = (int)EE_Registry::instance()->REQ->get('spco_txn', 0);
+		if ($TXN_ID !== $this->checkout->transaction->ID()) {
+			// Houston... we might have a problem
+			$invalid_TXN = false;
+			// first gather some info
+			$valid_TXN          = EEM_Transaction::instance()->get_one_by_ID($TXN_ID);
+			$primary_registrant = $valid_TXN instanceof EE_Transaction
+				? $valid_TXN->primary_registration()
+				: null;
+			// let's start by retrieving the cart for this TXN
+			$cart = $this->checkout->get_cart_for_transaction($this->checkout->transaction);
+			if ($cart instanceof EE_Cart) {
+				// verify that the current cart has tickets
+				$tickets = $cart->get_tickets();
+				if (empty($tickets)) {
+					$invalid_TXN = true;
+				}
+			} else {
+				$invalid_TXN = true;
+			}
+			$valid_TXN_SID = $primary_registrant instanceof EE_Registration
+				? $primary_registrant->session_ID()
+				: null;
+			// validate current Session ID and compare against valid TXN session ID
+			if (
+				$invalid_TXN // if this is already true, then skip other checks
+				|| EE_Session::instance()->id() === null
+				|| (
+					// WARNING !!!
+					// this could be PayPal sending back duplicate requests (ya they do that)
+					// or it **could** mean someone is simply registering AGAIN after having just done so
+					// so now we need to determine if this current TXN looks valid or not
+					// and whether this reg step has even been started ?
+					EE_Session::instance()->id() === $valid_TXN_SID
+					// really? you're half way through this reg step, but you never started it ?
+					&& $this->checkout->transaction->reg_step_completed($this->slug()) === false
+				)
+			) {
+				$invalid_TXN = true;
+			}
+			if ($invalid_TXN) {
+				// is the valid TXN completed ?
+				if ($valid_TXN instanceof EE_Transaction) {
+					// has this step even been started ?
+					$reg_step_completed = $valid_TXN->reg_step_completed($this->slug());
+					if ($reg_step_completed !== false && $reg_step_completed !== true) {
+						// so it **looks** like this is a double request from PayPal
+						// so let's try to pick up where we left off
+						$this->checkout->transaction = $valid_TXN;
+						$this->checkout->refresh_all_entities(true);
+						return;
+					}
+				}
+				// you appear to be lost?
+				$this->_redirect_wayward_request($primary_registrant);
+			}
+		}
+	}
+
+
+	/**
+	 * _redirect_wayward_request
+	 *
+	 * @access private
+	 * @param \EE_Registration|null $primary_registrant
+	 * @return bool
+	 * @throws \EE_Error
+	 */
+	private function _redirect_wayward_request(EE_Registration $primary_registrant)
+	{
+		if (! $primary_registrant instanceof EE_Registration) {
+			// try redirecting based on the current TXN
+			$primary_registrant = $this->checkout->transaction instanceof EE_Transaction
+				? $this->checkout->transaction->primary_registration()
+				: null;
+		}
+		if (! $primary_registrant instanceof EE_Registration) {
+			EE_Error::add_error(
+				sprintf(
+					__(
+						'Invalid information was received from the Off-Site Payment Processor and your Transaction details could not be retrieved from the database.%1$sPlease try again or contact %2$s for assistance.',
+						'event_espresso'
+					),
+					'<br/>',
+					EE_Registry::instance()->CFG->organization->get_pretty('email')
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// make sure transaction is not locked
+		$this->checkout->transaction->unlock();
+		wp_safe_redirect(
+			add_query_arg(
+				array(
+					'e_reg_url_link' => $primary_registrant->reg_url_link(),
+				),
+				$this->checkout->thank_you_page_url
+			)
+		);
+		exit();
+	}
+
+
+	/**
+	 * _process_off_site_payment
+	 *
+	 * @access private
+	 * @param \EE_Offsite_Gateway $gateway
+	 * @return \EE_Payment
+	 * @throws \EE_Error
+	 */
+	private function _process_off_site_payment(EE_Offsite_Gateway $gateway)
+	{
+		try {
+			$request_data = \EE_Registry::instance()->REQ->params();
+			// if gateway uses_separate_IPN_request, then we don't have to process the IPN manually
+			$this->set_handle_IPN_in_this_request(
+				$gateway->handle_IPN_in_this_request($request_data, false)
+			);
+			if ($this->handle_IPN_in_this_request()) {
+				// get payment details and process results
+				/** @type EE_Payment_Processor $payment_processor */
+				$payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
+				$payment           = $payment_processor->process_ipn(
+					$request_data,
+					$this->checkout->transaction,
+					$this->checkout->payment_method,
+					true,
+					false
+				);
+				//$payment_source = 'process_ipn';
+			} else {
+				$payment = $this->checkout->transaction->last_payment();
+				//$payment_source = 'last_payment';
+			}
+		} catch (Exception $e) {
+			// let's just eat the exception and try to move on using any previously set payment info
+			$payment = $this->checkout->transaction->last_payment();
+			//$payment_source = 'last_payment after Exception';
+			// but if we STILL don't have a payment object
+			if (! $payment instanceof EE_Payment) {
+				// then we'll object ! ( not object like a thing... but object like what a lawyer says ! )
+				$this->_handle_payment_processor_exception($e);
+			}
+		}
+		// DEBUG LOG
+		//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__,
+		//	array(
+		//		'process_ipn_payment' => $payment,
+		//		'payment_source'      => $payment_source,
+		//	)
+		//);
+		return $payment;
+	}
+
+
+	/**
+	 * _process_cancelled_payments
+	 * just makes sure that the payment status gets updated correctly
+	 * so tha tan error isn't generated during payment validation
+	 *
+	 * @access private
+	 * @param EE_Payment $payment
+	 * @return EE_Payment | FALSE
+	 * @throws \EE_Error
+	 */
+	private function _process_cancelled_payments($payment = null)
+	{
+		if (
+			$payment instanceof EE_Payment
+			&& isset($_REQUEST['ee_cancel_payment'])
+			&& $payment->status() === EEM_Payment::status_id_failed
+		) {
+			$payment->set_status(EEM_Payment::status_id_cancelled);
+		}
+		return $payment;
+	}
+
+
+	/**
+	 *    get_transaction_details_for_gateways
+	 *
+	 * @access    public
+	 * @return    int
+	 * @throws \EE_Error
+	 */
+	public function get_transaction_details_for_gateways()
+	{
+		$txn_details = array();
+		// ya gotta make a choice man
+		if (empty($this->checkout->selected_method_of_payment)) {
+			$txn_details = array(
+				'error' => __('Please select a method of payment before proceeding.', 'event_espresso'),
+			);
+		}
+		// get EE_Payment_Method object
+		if (
+			empty($txn_details)
+			&&
+			! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()
+		) {
+			$txn_details = array(
+				'selected_method_of_payment' => $this->checkout->selected_method_of_payment,
+				'error'                      => __(
+					'A valid Payment Method could not be determined.',
+					'event_espresso'
+				),
+			);
+		}
+		if (empty($txn_details) && $this->checkout->transaction instanceof EE_Transaction) {
+			$return_url  = $this->_get_return_url($this->checkout->payment_method);
+			$txn_details = array(
+				'TXN_ID'         => $this->checkout->transaction->ID(),
+				'TXN_timestamp'  => $this->checkout->transaction->datetime(),
+				'TXN_total'      => $this->checkout->transaction->total(),
+				'TXN_paid'       => $this->checkout->transaction->paid(),
+				'TXN_reg_steps'  => $this->checkout->transaction->reg_steps(),
+				'STS_ID'         => $this->checkout->transaction->status_ID(),
+				'PMD_ID'         => $this->checkout->transaction->payment_method_ID(),
+				'payment_amount' => $this->checkout->amount_owing,
+				'return_url'     => $return_url,
+				'cancel_url'     => add_query_arg(array('ee_cancel_payment' => true), $return_url),
+				'notify_url'     => EE_Config::instance()->core->txn_page_url(
+					array(
+						'e_reg_url_link'    => $this->checkout->transaction->primary_registration()->reg_url_link(),
+						'ee_payment_method' => $this->checkout->payment_method->slug(),
+					)
+				),
+			);
+		}
+		echo wp_json_encode($txn_details);
+		exit();
+	}
+
+
+	/**
+	 *    __sleep
+	 * to conserve db space, let's remove the reg_form and the EE_Checkout object from EE_SPCO_Reg_Step objects upon
+	 * serialization EE_Checkout will handle the reimplementation of itself upon waking, but we won't bother with the
+	 * reg form, because if needed, it will be regenerated anyways
+	 *
+	 * @return array
+	 */
+	public function __sleep()
+	{
+		// remove the reg form and the checkout
+		return array_diff(array_keys(get_object_vars($this)), array('reg_form', 'checkout', 'line_item_display'));
+	}
 
 
 }

Spacing +59 added lines, -59 removed lines

@@ -1,4 +1,4 @@ 
-<?php if (! defined('EVENT_ESPRESSO_VERSION')) {
+<?php if ( ! defined('EVENT_ESPRESSO_VERSION')) {
     exit('No direct script access allowed');
 }
 
@@ -129,7 +129,7 @@ 
     {
         $this->_slug     = 'payment_options';
         $this->_name     = __('Payment Options', 'event_espresso');
-        $this->_template = SPCO_REG_STEPS_PATH . $this->_slug . DS . 'payment_options_main.template.php';
+        $this->_template = SPCO_REG_STEPS_PATH.$this->_slug.DS.'payment_options_main.template.php';
         $this->checkout  = $checkout;
         $this->_reset_success_message();
         $this->set_instructions(
@@ -184,7 +184,7 @@ 
      */
     public function translate_js_strings()
     {
-        EE_Registry::$i18n_js_strings['no_payment_method']      = __(
+        EE_Registry::$i18n_js_strings['no_payment_method'] = __(
             'Please select a method of payment in order to continue.',
             'event_espresso'
         );
@@ -192,7 +192,7 @@ 
             'A valid method of payment could not be determined. Please refresh the page and try again.',
             'event_espresso'
         );
-        EE_Registry::$i18n_js_strings['forwarding_to_offsite']  = __(
+        EE_Registry::$i18n_js_strings['forwarding_to_offsite'] = __(
             'Forwarding to Secure Payment Provider.',
             'event_espresso'
         );
@@ -208,7 +208,7 @@ 
     {
         $transaction = $this->checkout->transaction;
         //if the transaction isn't set or nothing is owed on it, don't enqueue any JS
-        if (! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
+        if ( ! $transaction instanceof EE_Transaction || EEH_Money::compare_floats($transaction->remaining(), 0)) {
             return;
         }
         foreach (
@@ -343,23 +343,23 @@ 
         }
         $subsections = array();
         // now decide which template to load
-        if (! empty($sold_out_events)) {
+        if ( ! empty($sold_out_events)) {
             $subsections['sold_out_events'] = $this->_sold_out_events($sold_out_events);
         }
-        if (! empty($insufficient_spaces_available)) {
+        if ( ! empty($insufficient_spaces_available)) {
             $subsections['insufficient_space'] = $this->_insufficient_spaces_available(
                 $insufficient_spaces_available
             );
         }
-        if (! empty($registrations_requiring_pre_approval)) {
+        if ( ! empty($registrations_requiring_pre_approval)) {
             $subsections['registrations_requiring_pre_approval'] = $this->_registrations_requiring_pre_approval(
                 $registrations_requiring_pre_approval
             );
         }
-        if (! empty($registrations_for_free_events)) {
+        if ( ! empty($registrations_for_free_events)) {
             $subsections['no_payment_required'] = $this->_no_payment_required($registrations_for_free_events);
         }
-        if (! empty($registrations_requiring_payment)) {
+        if ( ! empty($registrations_requiring_payment)) {
             if ($this->checkout->amount_owing > 0) {
                 // autoload Line_Item_Display classes
                 EEH_Autoloader::register_line_item_filter_autoloaders();
@@ -380,7 +380,7 @@ 
                         array('registrations' => $registrations)
                     )
                 );
-                $this->checkout->amount_owing   = $filtered_line_item_tree->total();
+                $this->checkout->amount_owing = $filtered_line_item_tree->total();
                 $this->_apply_registration_payments_to_amount_owing($registrations);
             }
             $no_payment_required = false;
@@ -418,13 +418,13 @@ 
      */
     public static function add_spco_line_item_filters(EE_Line_Item_Filter_Collection $line_item_filter_collection)
     {
-        if (! EE_Registry::instance()->SSN instanceof EE_Session) {
+        if ( ! EE_Registry::instance()->SSN instanceof EE_Session) {
             return $line_item_filter_collection;
         }
-        if (! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
+        if ( ! EE_Registry::instance()->SSN->checkout() instanceof EE_Checkout) {
             return $line_item_filter_collection;
         }
-        if (! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
+        if ( ! EE_Registry::instance()->SSN->checkout()->transaction instanceof EE_Transaction) {
             return $line_item_filter_collection;
         }
         $line_item_filter_collection->add(
@@ -504,15 +504,15 @@ 
             }
             $EVT_ID = $registration->event_ID();
             $ticket = $registration->ticket();
-            if (! isset($tickets_remaining[$ticket->ID()])) {
+            if ( ! isset($tickets_remaining[$ticket->ID()])) {
                 $tickets_remaining[$ticket->ID()] = $ticket->remaining();
             }
             if ($tickets_remaining[$ticket->ID()] > 0) {
-                if (! isset($event_reg_count[$EVT_ID])) {
+                if ( ! isset($event_reg_count[$EVT_ID])) {
                     $event_reg_count[$EVT_ID] = 0;
                 }
                 $event_reg_count[$EVT_ID]++;
-                if (! isset($event_spaces_remaining[$EVT_ID])) {
+                if ( ! isset($event_spaces_remaining[$EVT_ID])) {
                     $event_spaces_remaining[$EVT_ID] = $registration->event()->spaces_remaining_for_sale();
                 }
             }
@@ -582,7 +582,7 @@ 
         $sold_out_events                            = '';
         foreach ($sold_out_events_array as $sold_out_event) {
             $sold_out_events .= EEH_HTML::li(
-                EEH_HTML::span('  ' . $sold_out_event->name(), '',
+                EEH_HTML::span('  '.$sold_out_event->name(), '',
                     'dashicons dashicons-marker ee-icon-size-16 pink-text')
             );
         }
@@ -634,7 +634,7 @@ 
         foreach ($insufficient_spaces_events_array as $event) {
             if ($event instanceof EE_Event) {
                 $insufficient_space_events .= EEH_HTML::li(
-                    EEH_HTML::span(' ' . $event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
+                    EEH_HTML::span(' '.$event->name(), '', 'dashicons dashicons-marker ee-icon-size-16 pink-text')
                 );
             }
         }
@@ -820,7 +820,7 @@ 
     {
         return new EE_Form_Section_Proper(
             array(
-                'html_id'         => 'ee-' . $this->slug() . '-extra-hidden-inputs',
+                'html_id'         => 'ee-'.$this->slug().'-extra-hidden-inputs',
                 'layout_strategy' => new EE_Div_Per_Section_Layout(),
                 'subsections'     => array(
                     'spco_no_payment_required' => new EE_Hidden_Input(
@@ -859,7 +859,7 @@ 
                 $payments += $registration->registration_payments();
             }
         }
-        if (! empty($payments)) {
+        if ( ! empty($payments)) {
             foreach ($payments as $payment) {
                 if ($payment instanceof EE_Registration_Payment) {
                     $this->checkout->amount_owing -= $payment->amount();
@@ -921,7 +921,7 @@ 
         // load payment method classes
         $this->checkout->available_payment_methods = $this->_get_available_payment_methods();
         // switch up header depending on number of available payment methods
-        $payment_method_header     = count($this->checkout->available_payment_methods) > 1
+        $payment_method_header = count($this->checkout->available_payment_methods) > 1
             ? apply_filters(
                 'FHEE__registration_page_payment_options__method_of_payment_hdr',
                 __('Please Select Your Method of Payment', 'event_espresso')
@@ -951,14 +951,14 @@ 
                 $payment_method_button = EEH_HTML::img(
                     $payment_method->button_url(),
                     $payment_method->name(),
-                    'spco-payment-method-' . $payment_method->slug() . '-btn-img',
+                    'spco-payment-method-'.$payment_method->slug().'-btn-img',
                     'spco-payment-method-btn-img'
                 );
                 // check if any payment methods are set as default
                 // if payment method is already selected OR nothing is selected and this payment method should be open_by_default
                 if (
                     ($this->checkout->selected_method_of_payment === $payment_method->slug())
-                    || (! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
+                    || ( ! $this->checkout->selected_method_of_payment && $payment_method->open_by_default())
                 ) {
                     $this->checkout->selected_method_of_payment = $payment_method->slug();
                     $this->_save_selected_method_of_payment();
@@ -978,7 +978,7 @@ 
         $available_payment_methods['available_payment_methods'] = $this->_available_payment_method_inputs(
             $available_payment_method_options
         );
-        $available_payment_methods                              += $payment_methods_billing_info;
+        $available_payment_methods += $payment_methods_billing_info;
         // build the available payment methods form
         return new EE_Form_Section_Proper(
             array(
@@ -997,7 +997,7 @@ 
      */
     protected function _get_available_payment_methods()
     {
-        if (! empty($this->checkout->available_payment_methods)) {
+        if ( ! empty($this->checkout->available_payment_methods)) {
             return $this->checkout->available_payment_methods;
         }
         $available_payment_methods = array();
@@ -1034,7 +1034,7 @@ 
                 'html_id'         => 'ee-available-payment-method-inputs',
                 'layout_strategy' => new EE_Div_Per_Section_Layout(),
                 'subsections'     => array(
-                    '' => new EE_Radio_Button_Input (
+                    '' => new EE_Radio_Button_Input(
                         $available_payment_method_options,
                         array(
                             'html_name'          => 'selected_method_of_payment',
@@ -1104,7 +1104,7 @@ 
         );
         return new EE_Form_Section_Proper(
             array(
-                'html_id'         => 'spco-payment-method-info-' . $payment_method->slug(),
+                'html_id'         => 'spco-payment-method-info-'.$payment_method->slug(),
                 'html_class'      => 'spco-payment-method-info-dv',
                 // only display the selected or default PM
                 'html_style'      => $currently_selected ? '' : 'display:none;',
@@ -1130,7 +1130,7 @@ 
         // how have they chosen to pay?
         $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
         $this->checkout->payment_method             = $this->_get_payment_method_for_selected_method_of_payment();
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+        if ( ! $this->checkout->payment_method instanceof EE_Payment_Method) {
             return false;
         }
         if (apply_filters(
@@ -1295,7 +1295,7 @@ 
      */
     public function switch_payment_method()
     {
-        if (! $this->_verify_payment_method_is_set()) {
+        if ( ! $this->_verify_payment_method_is_set()) {
             return false;
         }
         if (apply_filters(
@@ -1414,7 +1414,7 @@ 
             }
         }
         // verify payment method
-        if (! $this->checkout->payment_method instanceof EE_Payment_Method) {
+        if ( ! $this->checkout->payment_method instanceof EE_Payment_Method) {
             // get payment method for selected method of payment
             $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment();
         }
@@ -1434,7 +1434,7 @@ 
      */
     public function save_payer_details_via_ajax()
     {
-        if (! $this->_verify_payment_method_is_set()) {
+        if ( ! $this->_verify_payment_method_is_set()) {
             return;
         }
         // generate billing form for selected method of payment if it hasn't been done already
@@ -1444,7 +1444,7 @@ 
             );
         }
         // generate primary attendee from payer info if applicable
-        if (! $this->checkout->transaction_has_primary_registrant()) {
+        if ( ! $this->checkout->transaction_has_primary_registrant()) {
             $attendee = $this->_create_attendee_from_request_data();
             if ($attendee instanceof EE_Attendee) {
                 foreach ($this->checkout->transaction->registrations() as $registration) {
@@ -1471,7 +1471,7 @@ 
     {
         // get State ID
         $STA_ID = ! empty($_REQUEST['state']) ? sanitize_text_field($_REQUEST['state']) : '';
-        if (! empty($STA_ID)) {
+        if ( ! empty($STA_ID)) {
             // can we get state object from name ?
             EE_Registry::instance()->load_model('State');
             $state  = EEM_State::instance()->get_col(array(array('STA_name' => $STA_ID), 'limit' => 1), 'STA_ID');
@@ -1479,7 +1479,7 @@ 
         }
         // get Country ISO
         $CNT_ISO = ! empty($_REQUEST['country']) ? sanitize_text_field($_REQUEST['country']) : '';
-        if (! empty($CNT_ISO)) {
+        if ( ! empty($CNT_ISO)) {
             // can we get country object from name ?
             EE_Registry::instance()->load_model('Country');
             $country = EEM_Country::instance()->get_col(
@@ -1511,7 +1511,7 @@ 
             );
         }
         // does this attendee already exist in the db ? we're searching using a combination of first name, last name, AND email address
-        if (! empty($attendee_data['ATT_fname'])
+        if ( ! empty($attendee_data['ATT_fname'])
             && ! empty($attendee_data['ATT_lname'])
             && ! empty($attendee_data['ATT_email'])
         ) {
@@ -1710,7 +1710,7 @@ 
     private function _process_payment()
     {
         // basically confirm that the event hasn't sold out since they hit the page
-        if (! $this->_last_second_ticket_verifications()) {
+        if ( ! $this->_last_second_ticket_verifications()) {
             return false;
         }
         // ya gotta make a choice man
@@ -1721,7 +1721,7 @@ 
             return false;
         }
         // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+        if ( ! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
             return false;
         }
         // setup billing form
@@ -1730,12 +1730,12 @@ 
                 $this->checkout->payment_method
             );
             // bad billing form ?
-            if (! $this->_billing_form_is_valid()) {
+            if ( ! $this->_billing_form_is_valid()) {
                 return false;
             }
         }
         // ensure primary registrant has been fully processed
-        if (! $this->_setup_primary_registrant_prior_to_payment()) {
+        if ( ! $this->_setup_primary_registrant_prior_to_payment()) {
             return false;
         }
         // if session is close to expiring (under 10 minutes by default)
@@ -1787,7 +1787,7 @@ 
     protected function _last_second_ticket_verifications()
     {
         // don't bother re-validating if not a return visit
-        if (! $this->checkout->revisit) {
+        if ( ! $this->checkout->revisit) {
             return true;
         }
         $registrations = $this->checkout->transaction->registrations();
@@ -1832,7 +1832,7 @@ 
             $this->_get_payment_method_for_selected_method_of_payment()
         );
         $html                        = $payment_method_billing_info->get_html();
-        $html                        .= $this->checkout->redirect_form;
+        $html .= $this->checkout->redirect_form;
         EE_Registry::instance()->REQ->add_output($html);
         return true;
     }
@@ -1847,7 +1847,7 @@ 
      */
     private function _billing_form_is_valid()
     {
-        if (! $this->checkout->payment_method->type_obj()->has_billing_form()) {
+        if ( ! $this->checkout->payment_method->type_obj()->has_billing_form()) {
             return true;
         }
         if ($this->checkout->billing_form instanceof EE_Billing_Info_Form) {
@@ -1955,7 +1955,7 @@ 
     {
         // convert billing form data into an attendee
         $this->checkout->primary_attendee_obj = $this->checkout->billing_form->create_attendee_from_billing_form_data();
-        if (! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
+        if ( ! $this->checkout->primary_attendee_obj instanceof EE_Attendee) {
             EE_Error::add_error(
                 sprintf(
                     __(
@@ -1972,7 +1972,7 @@ 
             return false;
         }
         $primary_registration = $this->checkout->transaction->primary_registration();
-        if (! $primary_registration instanceof EE_Registration) {
+        if ( ! $primary_registration instanceof EE_Registration) {
             EE_Error::add_error(
                 sprintf(
                     __(
@@ -1988,7 +1988,7 @@ 
             );
             return false;
         }
-        if (! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
+        if ( ! $primary_registration->_add_relation_to($this->checkout->primary_attendee_obj, 'Attendee')
               instanceof
               EE_Attendee
         ) {
@@ -2040,7 +2040,7 @@ 
             $payment_method     = $EEM_Payment_Method->get_one_by_slug($this->checkout->selected_method_of_payment);
         }
         // verify $payment_method
-        if (! $payment_method instanceof EE_Payment_Method) {
+        if ( ! $payment_method instanceof EE_Payment_Method) {
             // not a payment
             EE_Error::add_error(
                 sprintf(
@@ -2058,7 +2058,7 @@ 
             return null;
         }
         // and verify it has a valid Payment_Method Type object
-        if (! $payment_method->type_obj() instanceof EE_PMT_Base) {
+        if ( ! $payment_method->type_obj() instanceof EE_PMT_Base) {
             // not a payment
             EE_Error::add_error(
                 sprintf(
@@ -2092,7 +2092,7 @@ 
         $payment = null;
         $this->checkout->transaction->save();
         $payment_processor = EE_Registry::instance()->load_core('Payment_Processor');
-        if (! $payment_processor instanceof EE_Payment_Processor) {
+        if ( ! $payment_processor instanceof EE_Payment_Processor) {
             return false;
         }
         try {
@@ -2190,7 +2190,7 @@ 
             return true;
         }
         // verify payment object
-        if (! $payment instanceof EE_Payment) {
+        if ( ! $payment instanceof EE_Payment) {
             // not a payment
             EE_Error::add_error(
                 sprintf(
@@ -2227,7 +2227,7 @@ 
             return true;
             // On-Site payment?
         } else if ($this->checkout->payment_method->is_on_site()) {
-            if (! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
+            if ( ! $this->_process_payment_status($payment, EE_PMT_Base::onsite)) {
                 //$this->_setup_redirect_for_next_step();
                 $this->checkout->continue_reg = false;
             }
@@ -2359,7 +2359,7 @@ 
                     break;
                 // bad payment
                 case EEM_Payment::status_id_failed :
-                    if (! empty($msg)) {
+                    if ( ! empty($msg)) {
                         EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
                         return false;
                     }
@@ -2415,11 +2415,11 @@ 
         // how have they chosen to pay?
         $this->checkout->selected_method_of_payment = $this->_get_selected_method_of_payment(true);
         // get EE_Payment_Method object
-        if (! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
+        if ( ! $this->checkout->payment_method = $this->_get_payment_method_for_selected_method_of_payment()) {
             $this->checkout->continue_reg = false;
             return false;
         }
-        if (! $this->checkout->payment_method->is_off_site()) {
+        if ( ! $this->checkout->payment_method->is_off_site()) {
             return false;
         }
         $this->_validate_offsite_return();
@@ -2435,7 +2435,7 @@ 
         // verify TXN
         if ($this->checkout->transaction instanceof EE_Transaction) {
             $gateway = $this->checkout->payment_method->type_obj()->get_gateway();
-            if (! $gateway instanceof EE_Offsite_Gateway) {
+            if ( ! $gateway instanceof EE_Offsite_Gateway) {
                 $this->checkout->continue_reg = false;
                 return false;
             }
@@ -2474,7 +2474,7 @@ 
      */
     private function _validate_offsite_return()
     {
-        $TXN_ID = (int)EE_Registry::instance()->REQ->get('spco_txn', 0);
+        $TXN_ID = (int) EE_Registry::instance()->REQ->get('spco_txn', 0);
         if ($TXN_ID !== $this->checkout->transaction->ID()) {
             // Houston... we might have a problem
             $invalid_TXN = false;
@@ -2544,13 +2544,13 @@ 
      */
     private function _redirect_wayward_request(EE_Registration $primary_registrant)
     {
-        if (! $primary_registrant instanceof EE_Registration) {
+        if ( ! $primary_registrant instanceof EE_Registration) {
             // try redirecting based on the current TXN
             $primary_registrant = $this->checkout->transaction instanceof EE_Transaction
                 ? $this->checkout->transaction->primary_registration()
                 : null;
         }
-        if (! $primary_registrant instanceof EE_Registration) {
+        if ( ! $primary_registrant instanceof EE_Registration) {
             EE_Error::add_error(
                 sprintf(
                     __(
@@ -2617,7 +2617,7 @@ 
             $payment = $this->checkout->transaction->last_payment();
             //$payment_source = 'last_payment after Exception';
             // but if we STILL don't have a payment object
-            if (! $payment instanceof EE_Payment) {
+            if ( ! $payment instanceof EE_Payment) {
                 // then we'll object ! ( not object like a thing... but object like what a lawyer says ! )
                 $this->_handle_payment_processor_exception($e);
             }

modules/messages/EED_Messages.module.php

Indentation +1090 added lines, -1090 removed lines

@@ -16,1105 +16,1105 @@
 class EED_Messages extends EED_Module
 {
 
-    /**
-     * This holds the EE_messages controller
-     *
-     * @deprecated 4.9.0
-     * @var EE_messages $_EEMSG
-     */
-    protected static $_EEMSG;
-
-    /**
-     * @type EE_Message_Resource_Manager $_message_resource_manager
-     */
-    protected static $_message_resource_manager;
-
-    /**
-     * This holds the EE_Messages_Processor business class.
-     *
-     * @type EE_Messages_Processor
-     */
-    protected static $_MSG_PROCESSOR;
-
-    /**
-     * holds all the paths for various messages components.
-     * Utilized by autoloader registry
-     *
-     * @var array
-     */
-    protected static $_MSG_PATHS;
-
-
-    /**
-     * This will hold an array of messages template packs that are registered in the messages system.
-     * Format is:
-     * array(
-     *    'template_pack_dbref' => EE_Messages_Template_Pack (instance)
-     * )
-     *
-     * @var EE_Messages_Template_Pack[]
-     */
-    protected static $_TMP_PACKS = array();
-
-
-    /**
-     * @return EED_Messages
-     */
-    public static function instance()
-    {
-        return parent::get_instance(__CLASS__);
-    }
-
-
-    /**
-     *  set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @since 4.5.0
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        //actions
-        add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
-        add_action('AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
-            array('EED_Messages', 'maybe_registration'), 10, 2);
-        //filters
-        add_filter('FHEE__EE_Registration__receipt_url__receipt_url',
-            array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
-        add_filter('FHEE__EE_Registration__invoice_url__invoice_url',
-            array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
-        //register routes
-        self::_register_routes();
-    }
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks_admin()
-    {
-        //actions
-        add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
-        add_action('AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
-            array('EED_Messages', 'payment_reminder'), 10);
-        add_action('AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
-            array('EED_Messages', 'maybe_registration'), 10, 3);
-        add_action('AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send__with_registrations',
-            array('EED_Messages', 'send_newsletter_message'), 10, 2);
-        add_action('AHEE__EES_Espresso_Cancelled__process_shortcode__transaction',
-            array('EED_Messages', 'cancelled_registration'), 10);
-        add_action('AHEE__EE_Admin_Page___process_admin_payment_notification',
-            array('EED_Messages', 'process_admin_payment'), 10, 1);
-        //filters
-        add_filter('FHEE__EE_Admin_Page___process_resend_registration__success',
-            array('EED_Messages', 'process_resend'), 10, 2);
-        add_filter('FHEE__EE_Registration__receipt_url__receipt_url',
-            array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
-        add_filter('FHEE__EE_Registration__invoice_url__invoice_url',
-            array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
-    }
-
-
-    /**
-     * All the message triggers done by route go in here.
-     *
-     * @since 4.5.0
-     * @return void
-     */
-    protected static function _register_routes()
-    {
-        EE_Config::register_route('msg_url_trigger', 'Messages', 'run');
-        EE_Config::register_route('msg_cron_trigger', 'Messages', 'execute_batch_request');
-        EE_Config::register_route('msg_browser_trigger', 'Messages', 'browser_trigger');
-        EE_Config::register_route('msg_browser_error_trigger', 'Messages', 'browser_error_trigger');
-        do_action('AHEE__EED_Messages___register_routes');
-    }
-
-
-    /**
-     * This is called when a browser display trigger is executed.
-     * The browser display trigger is typically used when a already generated message is displayed directly in the
-     * browser.
-     *
-     * @since 4.9.0
-     * @param WP $WP
-     */
-    public function browser_trigger($WP)
-    {
-        //ensure controller is loaded
-        self::_load_controller();
-        $token = EE_Registry::instance()->REQ->get('token');
-        try {
-            $mtg = new EE_Message_Generated_From_Token($token, 'html', self::$_message_resource_manager);
-            self::$_MSG_PROCESSOR->generate_and_send_now($mtg);
-        } catch (EE_Error $e) {
-            $error_msg = __('Please note that a system message failed to send due to a technical issue.',
-                'event_espresso');
-            // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     * This is called when a browser error trigger is executed.
-     * When triggered this will grab the EE_Message matching the token in the request and use that to get the error
-     * message and display it.
-     *
-     * @since 4.9.0
-     * @param $WP
-     */
-    public function browser_error_trigger($WP)
-    {
-        $token = EE_Registry::instance()->REQ->get('token');
-        if ($token) {
-            $message = EEM_Message::instance()->get_one_by_token($token);
-            if ($message instanceof EE_Message) {
-                header('HTTP/1.1 200 OK');
-                $error_msg = nl2br($message->error_message());
-                ?>
+	/**
+	 * This holds the EE_messages controller
+	 *
+	 * @deprecated 4.9.0
+	 * @var EE_messages $_EEMSG
+	 */
+	protected static $_EEMSG;
+
+	/**
+	 * @type EE_Message_Resource_Manager $_message_resource_manager
+	 */
+	protected static $_message_resource_manager;
+
+	/**
+	 * This holds the EE_Messages_Processor business class.
+	 *
+	 * @type EE_Messages_Processor
+	 */
+	protected static $_MSG_PROCESSOR;
+
+	/**
+	 * holds all the paths for various messages components.
+	 * Utilized by autoloader registry
+	 *
+	 * @var array
+	 */
+	protected static $_MSG_PATHS;
+
+
+	/**
+	 * This will hold an array of messages template packs that are registered in the messages system.
+	 * Format is:
+	 * array(
+	 *    'template_pack_dbref' => EE_Messages_Template_Pack (instance)
+	 * )
+	 *
+	 * @var EE_Messages_Template_Pack[]
+	 */
+	protected static $_TMP_PACKS = array();
+
+
+	/**
+	 * @return EED_Messages
+	 */
+	public static function instance()
+	{
+		return parent::get_instance(__CLASS__);
+	}
+
+
+	/**
+	 *  set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @since 4.5.0
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		//actions
+		add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
+		add_action('AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
+			array('EED_Messages', 'maybe_registration'), 10, 2);
+		//filters
+		add_filter('FHEE__EE_Registration__receipt_url__receipt_url',
+			array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
+		add_filter('FHEE__EE_Registration__invoice_url__invoice_url',
+			array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
+		//register routes
+		self::_register_routes();
+	}
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks_admin()
+	{
+		//actions
+		add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
+		add_action('AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
+			array('EED_Messages', 'payment_reminder'), 10);
+		add_action('AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
+			array('EED_Messages', 'maybe_registration'), 10, 3);
+		add_action('AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send__with_registrations',
+			array('EED_Messages', 'send_newsletter_message'), 10, 2);
+		add_action('AHEE__EES_Espresso_Cancelled__process_shortcode__transaction',
+			array('EED_Messages', 'cancelled_registration'), 10);
+		add_action('AHEE__EE_Admin_Page___process_admin_payment_notification',
+			array('EED_Messages', 'process_admin_payment'), 10, 1);
+		//filters
+		add_filter('FHEE__EE_Admin_Page___process_resend_registration__success',
+			array('EED_Messages', 'process_resend'), 10, 2);
+		add_filter('FHEE__EE_Registration__receipt_url__receipt_url',
+			array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
+		add_filter('FHEE__EE_Registration__invoice_url__invoice_url',
+			array('EED_Messages', 'registration_message_trigger_url'), 10, 4);
+	}
+
+
+	/**
+	 * All the message triggers done by route go in here.
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 */
+	protected static function _register_routes()
+	{
+		EE_Config::register_route('msg_url_trigger', 'Messages', 'run');
+		EE_Config::register_route('msg_cron_trigger', 'Messages', 'execute_batch_request');
+		EE_Config::register_route('msg_browser_trigger', 'Messages', 'browser_trigger');
+		EE_Config::register_route('msg_browser_error_trigger', 'Messages', 'browser_error_trigger');
+		do_action('AHEE__EED_Messages___register_routes');
+	}
+
+
+	/**
+	 * This is called when a browser display trigger is executed.
+	 * The browser display trigger is typically used when a already generated message is displayed directly in the
+	 * browser.
+	 *
+	 * @since 4.9.0
+	 * @param WP $WP
+	 */
+	public function browser_trigger($WP)
+	{
+		//ensure controller is loaded
+		self::_load_controller();
+		$token = EE_Registry::instance()->REQ->get('token');
+		try {
+			$mtg = new EE_Message_Generated_From_Token($token, 'html', self::$_message_resource_manager);
+			self::$_MSG_PROCESSOR->generate_and_send_now($mtg);
+		} catch (EE_Error $e) {
+			$error_msg = __('Please note that a system message failed to send due to a technical issue.',
+				'event_espresso');
+			// add specific message for developers if WP_DEBUG in on
+			$error_msg .= '||' . $e->getMessage();
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 * This is called when a browser error trigger is executed.
+	 * When triggered this will grab the EE_Message matching the token in the request and use that to get the error
+	 * message and display it.
+	 *
+	 * @since 4.9.0
+	 * @param $WP
+	 */
+	public function browser_error_trigger($WP)
+	{
+		$token = EE_Registry::instance()->REQ->get('token');
+		if ($token) {
+			$message = EEM_Message::instance()->get_one_by_token($token);
+			if ($message instanceof EE_Message) {
+				header('HTTP/1.1 200 OK');
+				$error_msg = nl2br($message->error_message());
+				?>
                 <!DOCTYPE html>
                 <html>
                 <head></head>
                 <body>
                 <?php echo empty($error_msg)
-                    ? esc_html__('Unfortunately, we were unable to capture the error message for this message.',
-                        'event_espresso')
-                    : wp_kses(
-                        $error_msg,
-                        array(
-                            'a'      => array(
-                                'href'  => array(),
-                                'title' => array(),
-                            ),
-                            'span'   => array(),
-                            'div'    => array(),
-                            'p'      => array(),
-                            'strong' => array(),
-                            'em'     => array(),
-                            'br'     => array(),
-                        )
-                    ); ?>
+					? esc_html__('Unfortunately, we were unable to capture the error message for this message.',
+						'event_espresso')
+					: wp_kses(
+						$error_msg,
+						array(
+							'a'      => array(
+								'href'  => array(),
+								'title' => array(),
+							),
+							'span'   => array(),
+							'div'    => array(),
+							'p'      => array(),
+							'strong' => array(),
+							'em'     => array(),
+							'br'     => array(),
+						)
+					); ?>
                 </body>
                 </html>
                 <?php
-                exit;
-            }
-        }
-        return;
-    }
-
-
-    /**
-     *  This runs when the msg_url_trigger route has initiated.
-     *
-     * @since 4.5.0
-     * @param WP $WP
-     * @throws EE_Error
-     * @return    void
-     */
-    public function run($WP)
-    {
-        //ensure controller is loaded
-        self::_load_controller();
-        // attempt to process message
-        try {
-            /** @type EE_Message_To_Generate_From_Request $message_to_generate */
-            $message_to_generate = EE_Registry::instance()->load_lib('Message_To_Generate_From_Request');
-            self::$_MSG_PROCESSOR->generate_and_send_now($message_to_generate);
-        } catch (EE_Error $e) {
-            $error_msg = __('Please note that a system message failed to send due to a technical issue.',
-                'event_espresso');
-            // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     * This is triggered by the 'msg_cron_trigger' route.
-     *
-     * @param WP $WP
-     */
-    public function execute_batch_request($WP)
-    {
-        $this->run_cron();
-        header('HTTP/1.1 200 OK');
-        exit();
-    }
-
-
-    /**
-     * This gets executed on wp_cron jobs or when a batch request is initiated on its own separate non regular wp
-     * request.
-     */
-    public function run_cron()
-    {
-        self::_load_controller();
-        //get required vars
-        $cron_type     = EE_Registry::instance()->REQ->get('type');
-        $transient_key = EE_Registry::instance()->REQ->get('key');
-
-        //now let's verify transient, if not valid exit immediately
-        if (! get_transient($transient_key)) {
-            /**
-             * trigger error so this gets in the error logs.  This is important because it happens on a non-user request.
-             */
-            trigger_error(esc_attr__('Invalid Request (Transient does not exist)', 'event_espresso'));
-        }
-
-        //if made it here, lets' delete the transient to keep the db clean
-        delete_transient($transient_key);
-
-        if (apply_filters('FHEE__EED_Messages__run_cron__use_wp_cron', true)) {
-
-            $method = 'batch_' . $cron_type . '_from_queue';
-            if (method_exists(self::$_MSG_PROCESSOR, $method)) {
-                self::$_MSG_PROCESSOR->$method();
-            } else {
-                //no matching task
-                /**
-                 * trigger error so this gets in the error logs.  This is important because it happens on a non user request.
-                 */
-                trigger_error(esc_attr(sprintf(__('There is no task corresponding to this route %s', 'event_espresso'),
-                    $cron_type)));
-            }
-        }
-
-        do_action('FHEE__EED_Messages__run_cron__end');
-    }
-
-
-    /**
-     * This is used to retrieve the template pack for the given name.
-     * Retrieved packs are cached on the static $_TMP_PACKS array.  If there is no class matching the given name then
-     * the default template pack is returned.
-     *
-     * @deprecated 4.9.0  @see EEH_MSG_Template::get_template_pack()
-     * @param string $template_pack_name This should correspond to the dbref of the template pack (which is also used
-     *                                   in generating the Pack class name).
-     * @return EE_Messages_Template_Pack
-     */
-    public static function get_template_pack($template_pack_name)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::get_template_pack($template_pack_name);
-    }
-
-
-    /**
-     * Retrieves an array of all template packs.
-     * Array is in the format array( 'dbref' => EE_Messages_Template_Pack )
-     *
-     * @deprecated 4.9.0  @see EEH_MSG_Template_Pack::get_template_pack_collection
-     * @return EE_Messages_Template_Pack[]
-     */
-    public static function get_template_packs()
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-
-        //for backward compat, let's make sure this returns in the same format as originally.
-        $template_pack_collection = EEH_MSG_Template::get_template_pack_collection();
-        $template_pack_collection->rewind();
-        $template_packs = array();
-        while ($template_pack_collection->valid()) {
-            $template_packs[$template_pack_collection->current()->dbref] = $template_pack_collection->current();
-            $template_pack_collection->next();
-        }
-        return $template_packs;
-    }
-
-
-    /**
-     * This simply makes sure the autoloaders are registered for the EE_messages system.
-     *
-     * @since 4.5.0
-     * @return void
-     */
-    public static function set_autoloaders()
-    {
-        if (empty(self::$_MSG_PATHS)) {
-            self::_set_messages_paths();
-            foreach (self::$_MSG_PATHS as $path) {
-                EEH_Autoloader::register_autoloaders_for_each_file_in_folder($path);
-            }
-            // add aliases
-            EEH_Autoloader::add_alias('EE_messages', 'EE_messages');
-            EEH_Autoloader::add_alias('EE_messenger', 'EE_messenger');
-        }
-    }
-
-
-    /**
-     * Take care of adding all the paths for the messages components to the $_MSG_PATHS property
-     * for use by the Messages Autoloaders
-     *
-     * @since 4.5.0
-     * @return void.
-     */
-    protected static function _set_messages_paths()
-    {
-        $dir_ref = array(
-            'messages/message_type',
-            'messages/messenger',
-            'messages/defaults',
-            'messages/defaults/email',
-            'messages/data_class',
-            'messages/validators',
-            'messages/validators/email',
-            'messages/validators/html',
-            'shortcodes',
-        );
-        $paths   = array();
-        foreach ($dir_ref as $index => $dir) {
-            $paths[$index] = EE_LIBRARIES . $dir;
-        }
-        self::$_MSG_PATHS = apply_filters('FHEE__EED_Messages___set_messages_paths___MSG_PATHS', $paths);
-    }
-
-
-    /**
-     * Takes care of loading dependencies
-     *
-     * @since 4.5.0
-     * @return void
-     */
-    protected static function _load_controller()
-    {
-        if (! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
-            EE_Registry::instance()->load_core('Request_Handler');
-            self::set_autoloaders();
-            self::$_EEMSG                    = EE_Registry::instance()->load_lib('messages');
-            self::$_MSG_PROCESSOR            = EE_Registry::instance()->load_lib('Messages_Processor');
-            self::$_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        }
-    }
-
-
-    /**
-     * @param EE_Transaction $transaction
-     */
-    public static function payment_reminder(EE_Transaction $transaction)
-    {
-        self::_load_controller();
-        $data = array($transaction, null);
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('payment_reminder', $data);
-    }
-
-
-    /**
-     * Any messages triggers for after successful gateway payments should go in here.
-     *
-     * @param  EE_Transaction object
-     * @param  EE_Payment     object
-     * @return void
-     */
-    public static function payment(EE_Transaction $transaction, EE_Payment $payment)
-    {
-        self::_load_controller();
-        $data = array($transaction, $payment);
-        EE_Registry::instance()->load_helper('MSG_Template');
-        $message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
-        //if payment amount is less than 0 then switch to payment_refund message type.
-        $message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
-    }
-
-
-    /**
-     * @param EE_Transaction $transaction
-     */
-    public static function cancelled_registration(EE_Transaction $transaction)
-    {
-        self::_load_controller();
-        $data = array($transaction, null);
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('cancelled_registration', $data);
-    }
-
-
-
-    /**
-     * Trigger for Registration messages
-     * Note that what registration message type is sent depends on what the reg status is for the registrations on the
-     * incoming transaction.
-     *
-     * @param EE_Registration $registration
-     * @param array           $extra_details
-     * @return void
-     * @throws EE_Error
-     * @throws EntityNotFoundException
-     */
-    public static function maybe_registration(EE_Registration $registration, $extra_details = array())
-    {
-
-        if (! self::_verify_registration_notification_send($registration, $extra_details)) {
-            //no messages please
-            return;
-        }
-
-        // get all non-trashed registrations so we make sure we send messages for the right status.
-        $all_registrations = $registration->transaction()->registrations(
-            array(
-                array('REG_deleted' => false),
-                'order_by' => array(
-                    'Event.EVT_name'     => 'ASC',
-                    'Attendee.ATT_lname' => 'ASC',
-                    'Attendee.ATT_fname' => 'ASC'
-                )
-            )
-        );
-        //cached array of statuses so we only trigger messages once per status.
-        $statuses_sent = array();
-        self::_load_controller();
-        $mtgs = array();
-
-        //loop through registrations and trigger messages once per status.
-        foreach ($all_registrations as $reg) {
-
-            //already triggered?
-            if (in_array($reg->status_ID(), $statuses_sent)) {
-                continue;
-            }
-
-            $message_type    = EEH_MSG_Template::convert_reg_status_to_message_type($reg->status_ID());
-            $mtgs            = array_merge(
-                    $mtgs,
-                    self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
-                            $message_type,
-                            array($registration->transaction(), null, $reg->status_ID())
-                    )
-            );
-            $statuses_sent[] = $reg->status_ID();
-        }
-
-        if (count($statuses_sent) > 1) {
-            $mtgs = array_merge(
-                $mtgs,
-                self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
-                    'registration_summary',
-                    array($registration->transaction(), null)
-                )
-            );
-        }
-
-        //batch queue and initiate request
-        self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($mtgs);
-        self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
-    }
-
-
-    /**
-     * This is a helper method used to very whether a registration notification should be sent or
-     * not.  Prevents duplicate notifications going out for registration context notifications.
-     *
-     * @param EE_Registration $registration  [description]
-     * @param array           $extra_details [description]
-     * @return bool          true = send away, false = nope halt the presses.
-     */
-    protected static function _verify_registration_notification_send(
-        EE_Registration $registration,
-        $extra_details = array()
-    ) {
-        //self::log(
-        //	__CLASS__, __FUNCTION__, __LINE__,
-        //	$registration->transaction(),
-        //	array( '$extra_details' => $extra_details )
-        //);
-        // currently only using this to send messages for the primary registrant
-        if (! $registration->is_primary_registrant()) {
-            return false;
-        }
-        // first we check if we're in admin and not doing front ajax
-        if (is_admin() && ! EE_FRONT_AJAX) {
-            //make sure appropriate admin params are set for sending messages
-            if (empty($_REQUEST['txn_reg_status_change']['send_notifications']) || ! absint($_REQUEST['txn_reg_status_change']['send_notifications'])) {
-                //no messages sent please.
-                return false;
-            }
-        } else {
-            // frontend request (either regular or via AJAX)
-            // TXN is NOT finalized ?
-            if (! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
-                return false;
-            }
-            // return visit but nothing changed ???
-            if (
-                isset($extra_details['revisit'], $extra_details['status_updates']) &&
-                $extra_details['revisit'] && ! $extra_details['status_updates']
-            ) {
-                return false;
-            }
-            // NOT sending messages && reg status is something other than "Not-Approved"
-            if (
-                ! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
-                $registration->status_ID() !== EEM_Registration::status_id_not_approved
-            ) {
-                return false;
-            }
-        }
-        // release the kraken
-        return true;
-    }
-
-
-    /**
-     * Simply returns an array indexed by Registration Status ID and the related message_type name associated with that
-     * status id.
-     *
-     * @deprecated 4.9.0  Use EEH_MSG_Template::reg_status_to_message_type_array()
-     *                    or EEH_MSG_Template::convert_reg_status_to_message_type
-     * @param string $reg_status
-     * @return array
-     */
-    protected static function _get_reg_status_array($reg_status = '')
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
-            ? EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
-            : EEH_MSG_Template::reg_status_to_message_type_array();
-    }
-
-
-    /**
-     * Simply returns the payment message type for the given payment status.
-     *
-     * @deprecated 4.9.0 Use EEH_MSG_Template::payment_status_to_message_type_array
-     *                   or EEH_MSG_Template::convert_payment_status_to_message_type
-     * @param string $payment_status The payment status being matched.
-     * @return string|bool The payment message type slug matching the status or false if no match.
-     */
-    protected static function _get_payment_message_type($payment_status)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
-            ? EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
-            : false;
-    }
-
-
-    /**
-     * Message triggers for a resending already sent message(s) (via EE_Message list table)
-     *
-     * @access public
-     * @param array $req_data This is the $_POST & $_GET data sent from EE_Admin Pages
-     * @return bool          success/fail
-     */
-    public static function process_resend($req_data)
-    {
-        self::_load_controller();
-
-        //if $msgID in this request then skip to the new resend_message
-        if (EE_Registry::instance()->REQ->get('MSG_ID')) {
-            return self::resend_message();
-        }
-
-        //make sure any incoming request data is set on the REQ so that it gets picked up later.
-        $req_data = (array)$req_data;
-        foreach ($req_data as $request_key => $request_value) {
-            EE_Registry::instance()->REQ->set($request_key, $request_value);
-        }
-
-        if (! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request()) {
-            return false;
-        }
-
-        try {
-            self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($messages_to_send);
-            self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
-        } catch (EE_Error $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        EE_Error::add_success(
-            __('Messages have been successfully queued for generation and sending.', 'event_espresso')
-        );
-        return true; //everything got queued.
-    }
-
-
-    /**
-     * Message triggers for a resending already sent message(s) (via EE_Message list table)
-     *
-     * @return bool
-     */
-    public static function resend_message()
-    {
-        self::_load_controller();
-
-        $msgID = EE_Registry::instance()->REQ->get('MSG_ID');
-        if (! $msgID) {
-            EE_Error::add_error(__('Something went wrong because there is no "MSG_ID" value in the request',
-                'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-
-        self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send((array)$msgID);
-
-        //setup success message.
-        $count_ready_for_resend = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
-        EE_Error::add_success(sprintf(
-            _n(
-                'There was %d message queued for resending.',
-                'There were %d messages queued for resending.',
-                $count_ready_for_resend,
-                'event_espresso'
-            ),
-            $count_ready_for_resend
-        ));
-        return true;
-    }
-
-
-    /**
-     * Message triggers for manual payment applied by admin
-     *
-     * @param  EE_Payment $payment EE_payment object
-     * @return bool              success/fail
-     */
-    public static function process_admin_payment(EE_Payment $payment)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        //we need to get the transaction object
-        $transaction = $payment->transaction();
-        if ($transaction instanceof EE_Transaction) {
-            $data         = array($transaction, $payment);
-            $message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
-
-            //if payment amount is less than 0 then switch to payment_refund message type.
-            $message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
-
-            //if payment_refund is selected, but the status is NOT accepted.  Then change message type to false so NO message notification goes out.
-            $message_type = $message_type == 'payment_refund' && $payment->STS_ID() != EEM_Payment::status_id_approved ? false : $message_type;
-
-            self::_load_controller();
-
-            self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
-
-            //get count of queued for generation
-            $count_to_generate = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(array(
-                EEM_Message::status_incomplete,
-                EEM_Message::status_idle,
-            ));
-
-            if ($count_to_generate > 0 && self::$_MSG_PROCESSOR->get_queue()->get_message_repository()->count() !== 0) {
-                add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
-                return true;
-            } else {
-                $count_failed = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::instance()->stati_indicating_failed_sending());
-                /**
-                 * Verify that there are actually errors.  If not then we return a success message because the queue might have been emptied due to successful
-                 * IMMEDIATE generation.
-                 */
-                if ($count_failed > 0) {
-                    EE_Error::add_error(sprintf(
-                        _n(
-                            'The payment notification generation failed.',
-                            '%d payment notifications failed being sent.',
-                            $count_failed,
-                            'event_espresso'
-                        ),
-                        $count_failed
-                    ), __FILE__, __FUNCTION__, __LINE__);
-
-                    return false;
-                } else {
-                    add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
-                    return true;
-                }
-            }
-        } else {
-            EE_Error::add_error(
-                'Unable to generate the payment notification because the given value for the transaction is invalid.',
-                'event_espresso'
-            );
-            return false;
-        }
-    }
-
-
-    /**
-     * Callback for AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send_with_registrations trigger
-     *
-     * @since   4.3.0
-     * @param  EE_Registration[] $registrations an array of EE_Registration objects
-     * @param  int               $grp_id        a specific message template group id.
-     * @return void
-     */
-    public static function send_newsletter_message($registrations, $grp_id)
-    {
-        //make sure mtp is id and set it in the EE_Request Handler later messages setup.
-        EE_Registry::instance()->REQ->set('GRP_ID', (int)$grp_id);
-        self::_load_controller();
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('newsletter', $registrations);
-    }
-
-
-    /**
-     * Callback for FHEE__EE_Registration__invoice_url__invoice_url or FHEE__EE_Registration__receipt_url__receipt_url
-     *
-     * @since   4.3.0
-     * @param    string          $registration_message_trigger_url
-     * @param    EE_Registration $registration
-     * @param string             $messenger
-     * @param string             $message_type
-     * @return    string
-     */
-    public static function registration_message_trigger_url(
-        $registration_message_trigger_url,
-        EE_Registration $registration,
-        $messenger = 'html',
-        $message_type = 'invoice'
-    ) {
-        // whitelist $messenger
-        switch ($messenger) {
-            case 'pdf' :
-                $sending_messenger    = 'pdf';
-                $generating_messenger = 'html';
-                break;
-            case 'html' :
-            default :
-                $sending_messenger    = 'html';
-                $generating_messenger = 'html';
-                break;
-        }
-        // whitelist $message_type
-        switch ($message_type) {
-            case 'receipt' :
-                $message_type = 'receipt';
-                break;
-            case 'invoice' :
-            default :
-                $message_type = 'invoice';
-                break;
-        }
-        // verify that both the messenger AND the message type are active
-        if (EEH_MSG_Template::is_messenger_active($sending_messenger) && EEH_MSG_Template::is_mt_active($message_type)) {
-            //need to get the correct message template group for this (i.e. is there a custom invoice for the event this registration is registered for?)
-            $template_query_params = array(
-                'MTP_is_active'    => true,
-                'MTP_messenger'    => $generating_messenger,
-                'MTP_message_type' => $message_type,
-                'Event.EVT_ID'     => $registration->event_ID(),
-            );
-            //get the message template group.
-            $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
-            //if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
-                // remove EVT_ID from query params so that global templates get picked up
-                unset($template_query_params['Event.EVT_ID']);
-                //get global template as the fallback
-                $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
-            }
-            //if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
-                return '';
-            }
-            // generate the URL
-            $registration_message_trigger_url = EEH_MSG_Template::generate_url_trigger(
-                $sending_messenger,
-                $generating_messenger,
-                'purchaser',
-                $message_type,
-                $registration,
-                $msg_template_group->ID(),
-                $registration->transaction_ID()
-            );
-
-        }
-        return $registration_message_trigger_url;
-    }
-
-
-    /**
-     * Use to generate and return a message preview!
-     *
-     * @param  string $type      This should correspond with a valid message type
-     * @param  string $context   This should correspond with a valid context for the message type
-     * @param  string $messenger This should correspond with a valid messenger.
-     * @param bool    $send      true we will do a test send using the messenger delivery, false we just do a regular
-     *                           preview
-     * @return bool|string The body of the message or if send is requested, sends.
-     * @throws EE_Error
-     */
-    public static function preview_message($type, $context, $messenger, $send = false)
-    {
-        self::_load_controller();
-        $mtg                     = new EE_Message_To_Generate(
-            $messenger,
-            $type,
-            array(),
-            $context,
-            true
-        );
-        $generated_preview_queue = self::$_MSG_PROCESSOR->generate_for_preview($mtg, $send);
-        if ($generated_preview_queue instanceof EE_Messages_Queue) {
-            $content = $generated_preview_queue->get_message_repository()->current()->content();
-            //if the current message was persisted to the db (which will happen with any extra fields on a message) then
-            //let's delete it because we don't need previews cluttering up the db.
-            if ($generated_preview_queue->get_message_repository()->current()->ID() > 0
-                && $generated_preview_queue->get_message_repository()->current()->STS_ID() !== EEM_Message::status_failed
-            ) {
-                $generated_preview_queue->get_message_repository()->delete();
-            }
-            return $content;
-        } else {
-            return $generated_preview_queue;
-        }
-    }
-
-
-    /**
-     * This is a method that allows for sending a message using a messenger matching the string given and the provided
-     * EE_Message_Queue object.  The EE_Message_Queue object is used to create a single aggregate EE_Message via the
-     * content found in the EE_Message objects in the queue.
-     *
-     * @since 4.9.0
-     * @param string            $messenger            a string matching a valid active messenger in the system
-     * @param string            $message_type         Although it seems contrary to the name of the method, a message
-     *                                                type name is still required to send along the message type to the
-     *                                                messenger because this is used for determining what specific
-     *                                                variations might be loaded for the generated message.
-     * @param EE_Messages_Queue $queue
-     * @param string            $custom_subject       Can be used to set what the custom subject string will be on the
-     *                                                aggregate EE_Message object.
-     * @return bool          success or fail.
-     */
-    public static function send_message_with_messenger_only(
-        $messenger,
-        $message_type,
-        EE_Messages_Queue $queue,
-        $custom_subject = ''
-    ) {
-        self::_load_controller();
-        /** @type EE_Message_To_Generate_From_Queue $message_to_generate */
-        $message_to_generate = EE_Registry::instance()->load_lib(
-            'Message_To_Generate_From_Queue',
-            array(
-                $messenger,
-                $message_type,
-                $queue,
-                $custom_subject,
-            )
-        );
-        return self::$_MSG_PROCESSOR->queue_for_sending($message_to_generate);
-    }
-
-
-    /**
-     * Generates Messages immediately for EE_Message IDs (but only for the correct status for generation)
-     *
-     * @since 4.9.0
-     * @param array $message_ids An array of message ids
-     * @return bool | EE_Messages_Queue     false if nothing was generated, EE_Messages_Queue containing generated
-     *              messages.
-     */
-    public static function generate_now($message_ids)
-    {
-        self::_load_controller();
-        $messages        = EEM_Message::instance()->get_all(
-            array(
-                0 => array(
-                    'MSG_ID' => array('IN', $message_ids),
-                    'STS_ID' => EEM_Message::status_incomplete,
-                ),
-            )
-        );
-        $generated_queue = false;
-        if ($messages) {
-            $generated_queue = self::$_MSG_PROCESSOR->batch_generate_from_queue($messages);
-        }
-
-        if (! $generated_queue instanceof EE_Messages_Queue) {
-            EE_Error::add_error(
-                __('The messages were not generated. This could mean there is already a batch being generated on a separate request, or because the selected messages are not ready for generation. Please wait a minute or two and try again.',
-                    'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-        return $generated_queue;
-    }
-
-
-    /**
-     * Sends messages immediately for the incoming message_ids that have the status of EEM_Message::status_resend or,
-     * EEM_Message::status_idle
-     *
-     * @since 4.9.0
-     * @param $message_ids
-     * @return bool | EE_Messages_Queue  false if no messages sent.
-     */
-    public static function send_now($message_ids)
-    {
-        self::_load_controller();
-        $messages   = EEM_Message::instance()->get_all(
-            array(
-                0 => array(
-                    'MSG_ID' => array('IN', $message_ids),
-                    'STS_ID' => array(
-                        'IN',
-                        array(EEM_Message::status_idle, EEM_Message::status_resend, EEM_Message::status_retry),
-                    ),
-                ),
-            )
-        );
-        $sent_queue = false;
-        if ($messages) {
-            $sent_queue = self::$_MSG_PROCESSOR->batch_send_from_queue($messages);
-        }
-
-        if (! $sent_queue instanceof EE_Messages_Queue) {
-            EE_Error::add_error(
-                __('The messages were not sent. This could mean there is already a batch being sent on a separate request, or because the selected messages are not sendable. Please wait a minute or two and try again.',
-                    'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        } else {
-            //can count how many sent by using the messages in the queue
-            $sent_count = $sent_queue->count_STS_in_queue(EEM_Message::instance()->stati_indicating_sent());
-            if ($sent_count > 0) {
-                EE_Error::add_success(
-                    sprintf(
-                        _n(
-                            'There was %d message successfully sent.',
-                            'There were %d messages successfully sent.',
-                            $sent_count,
-                            'event_espresso'
-                        ),
-                        $sent_count
-                    )
-                );
-            } else {
-                EE_Error::overwrite_errors();
-                EE_Error::add_error(
-                    __('No message was sent because of problems with sending. Either all the messages you selected were not a sendable message, they were ALREADY sent on a different scheduled task, or there was an error.
+				exit;
+			}
+		}
+		return;
+	}
+
+
+	/**
+	 *  This runs when the msg_url_trigger route has initiated.
+	 *
+	 * @since 4.5.0
+	 * @param WP $WP
+	 * @throws EE_Error
+	 * @return    void
+	 */
+	public function run($WP)
+	{
+		//ensure controller is loaded
+		self::_load_controller();
+		// attempt to process message
+		try {
+			/** @type EE_Message_To_Generate_From_Request $message_to_generate */
+			$message_to_generate = EE_Registry::instance()->load_lib('Message_To_Generate_From_Request');
+			self::$_MSG_PROCESSOR->generate_and_send_now($message_to_generate);
+		} catch (EE_Error $e) {
+			$error_msg = __('Please note that a system message failed to send due to a technical issue.',
+				'event_espresso');
+			// add specific message for developers if WP_DEBUG in on
+			$error_msg .= '||' . $e->getMessage();
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 * This is triggered by the 'msg_cron_trigger' route.
+	 *
+	 * @param WP $WP
+	 */
+	public function execute_batch_request($WP)
+	{
+		$this->run_cron();
+		header('HTTP/1.1 200 OK');
+		exit();
+	}
+
+
+	/**
+	 * This gets executed on wp_cron jobs or when a batch request is initiated on its own separate non regular wp
+	 * request.
+	 */
+	public function run_cron()
+	{
+		self::_load_controller();
+		//get required vars
+		$cron_type     = EE_Registry::instance()->REQ->get('type');
+		$transient_key = EE_Registry::instance()->REQ->get('key');
+
+		//now let's verify transient, if not valid exit immediately
+		if (! get_transient($transient_key)) {
+			/**
+			 * trigger error so this gets in the error logs.  This is important because it happens on a non-user request.
+			 */
+			trigger_error(esc_attr__('Invalid Request (Transient does not exist)', 'event_espresso'));
+		}
+
+		//if made it here, lets' delete the transient to keep the db clean
+		delete_transient($transient_key);
+
+		if (apply_filters('FHEE__EED_Messages__run_cron__use_wp_cron', true)) {
+
+			$method = 'batch_' . $cron_type . '_from_queue';
+			if (method_exists(self::$_MSG_PROCESSOR, $method)) {
+				self::$_MSG_PROCESSOR->$method();
+			} else {
+				//no matching task
+				/**
+				 * trigger error so this gets in the error logs.  This is important because it happens on a non user request.
+				 */
+				trigger_error(esc_attr(sprintf(__('There is no task corresponding to this route %s', 'event_espresso'),
+					$cron_type)));
+			}
+		}
+
+		do_action('FHEE__EED_Messages__run_cron__end');
+	}
+
+
+	/**
+	 * This is used to retrieve the template pack for the given name.
+	 * Retrieved packs are cached on the static $_TMP_PACKS array.  If there is no class matching the given name then
+	 * the default template pack is returned.
+	 *
+	 * @deprecated 4.9.0  @see EEH_MSG_Template::get_template_pack()
+	 * @param string $template_pack_name This should correspond to the dbref of the template pack (which is also used
+	 *                                   in generating the Pack class name).
+	 * @return EE_Messages_Template_Pack
+	 */
+	public static function get_template_pack($template_pack_name)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::get_template_pack($template_pack_name);
+	}
+
+
+	/**
+	 * Retrieves an array of all template packs.
+	 * Array is in the format array( 'dbref' => EE_Messages_Template_Pack )
+	 *
+	 * @deprecated 4.9.0  @see EEH_MSG_Template_Pack::get_template_pack_collection
+	 * @return EE_Messages_Template_Pack[]
+	 */
+	public static function get_template_packs()
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+
+		//for backward compat, let's make sure this returns in the same format as originally.
+		$template_pack_collection = EEH_MSG_Template::get_template_pack_collection();
+		$template_pack_collection->rewind();
+		$template_packs = array();
+		while ($template_pack_collection->valid()) {
+			$template_packs[$template_pack_collection->current()->dbref] = $template_pack_collection->current();
+			$template_pack_collection->next();
+		}
+		return $template_packs;
+	}
+
+
+	/**
+	 * This simply makes sure the autoloaders are registered for the EE_messages system.
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 */
+	public static function set_autoloaders()
+	{
+		if (empty(self::$_MSG_PATHS)) {
+			self::_set_messages_paths();
+			foreach (self::$_MSG_PATHS as $path) {
+				EEH_Autoloader::register_autoloaders_for_each_file_in_folder($path);
+			}
+			// add aliases
+			EEH_Autoloader::add_alias('EE_messages', 'EE_messages');
+			EEH_Autoloader::add_alias('EE_messenger', 'EE_messenger');
+		}
+	}
+
+
+	/**
+	 * Take care of adding all the paths for the messages components to the $_MSG_PATHS property
+	 * for use by the Messages Autoloaders
+	 *
+	 * @since 4.5.0
+	 * @return void.
+	 */
+	protected static function _set_messages_paths()
+	{
+		$dir_ref = array(
+			'messages/message_type',
+			'messages/messenger',
+			'messages/defaults',
+			'messages/defaults/email',
+			'messages/data_class',
+			'messages/validators',
+			'messages/validators/email',
+			'messages/validators/html',
+			'shortcodes',
+		);
+		$paths   = array();
+		foreach ($dir_ref as $index => $dir) {
+			$paths[$index] = EE_LIBRARIES . $dir;
+		}
+		self::$_MSG_PATHS = apply_filters('FHEE__EED_Messages___set_messages_paths___MSG_PATHS', $paths);
+	}
+
+
+	/**
+	 * Takes care of loading dependencies
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 */
+	protected static function _load_controller()
+	{
+		if (! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
+			EE_Registry::instance()->load_core('Request_Handler');
+			self::set_autoloaders();
+			self::$_EEMSG                    = EE_Registry::instance()->load_lib('messages');
+			self::$_MSG_PROCESSOR            = EE_Registry::instance()->load_lib('Messages_Processor');
+			self::$_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		}
+	}
+
+
+	/**
+	 * @param EE_Transaction $transaction
+	 */
+	public static function payment_reminder(EE_Transaction $transaction)
+	{
+		self::_load_controller();
+		$data = array($transaction, null);
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('payment_reminder', $data);
+	}
+
+
+	/**
+	 * Any messages triggers for after successful gateway payments should go in here.
+	 *
+	 * @param  EE_Transaction object
+	 * @param  EE_Payment     object
+	 * @return void
+	 */
+	public static function payment(EE_Transaction $transaction, EE_Payment $payment)
+	{
+		self::_load_controller();
+		$data = array($transaction, $payment);
+		EE_Registry::instance()->load_helper('MSG_Template');
+		$message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
+		//if payment amount is less than 0 then switch to payment_refund message type.
+		$message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
+	}
+
+
+	/**
+	 * @param EE_Transaction $transaction
+	 */
+	public static function cancelled_registration(EE_Transaction $transaction)
+	{
+		self::_load_controller();
+		$data = array($transaction, null);
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('cancelled_registration', $data);
+	}
+
+
+
+	/**
+	 * Trigger for Registration messages
+	 * Note that what registration message type is sent depends on what the reg status is for the registrations on the
+	 * incoming transaction.
+	 *
+	 * @param EE_Registration $registration
+	 * @param array           $extra_details
+	 * @return void
+	 * @throws EE_Error
+	 * @throws EntityNotFoundException
+	 */
+	public static function maybe_registration(EE_Registration $registration, $extra_details = array())
+	{
+
+		if (! self::_verify_registration_notification_send($registration, $extra_details)) {
+			//no messages please
+			return;
+		}
+
+		// get all non-trashed registrations so we make sure we send messages for the right status.
+		$all_registrations = $registration->transaction()->registrations(
+			array(
+				array('REG_deleted' => false),
+				'order_by' => array(
+					'Event.EVT_name'     => 'ASC',
+					'Attendee.ATT_lname' => 'ASC',
+					'Attendee.ATT_fname' => 'ASC'
+				)
+			)
+		);
+		//cached array of statuses so we only trigger messages once per status.
+		$statuses_sent = array();
+		self::_load_controller();
+		$mtgs = array();
+
+		//loop through registrations and trigger messages once per status.
+		foreach ($all_registrations as $reg) {
+
+			//already triggered?
+			if (in_array($reg->status_ID(), $statuses_sent)) {
+				continue;
+			}
+
+			$message_type    = EEH_MSG_Template::convert_reg_status_to_message_type($reg->status_ID());
+			$mtgs            = array_merge(
+					$mtgs,
+					self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
+							$message_type,
+							array($registration->transaction(), null, $reg->status_ID())
+					)
+			);
+			$statuses_sent[] = $reg->status_ID();
+		}
+
+		if (count($statuses_sent) > 1) {
+			$mtgs = array_merge(
+				$mtgs,
+				self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
+					'registration_summary',
+					array($registration->transaction(), null)
+				)
+			);
+		}
+
+		//batch queue and initiate request
+		self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($mtgs);
+		self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
+	}
+
+
+	/**
+	 * This is a helper method used to very whether a registration notification should be sent or
+	 * not.  Prevents duplicate notifications going out for registration context notifications.
+	 *
+	 * @param EE_Registration $registration  [description]
+	 * @param array           $extra_details [description]
+	 * @return bool          true = send away, false = nope halt the presses.
+	 */
+	protected static function _verify_registration_notification_send(
+		EE_Registration $registration,
+		$extra_details = array()
+	) {
+		//self::log(
+		//	__CLASS__, __FUNCTION__, __LINE__,
+		//	$registration->transaction(),
+		//	array( '$extra_details' => $extra_details )
+		//);
+		// currently only using this to send messages for the primary registrant
+		if (! $registration->is_primary_registrant()) {
+			return false;
+		}
+		// first we check if we're in admin and not doing front ajax
+		if (is_admin() && ! EE_FRONT_AJAX) {
+			//make sure appropriate admin params are set for sending messages
+			if (empty($_REQUEST['txn_reg_status_change']['send_notifications']) || ! absint($_REQUEST['txn_reg_status_change']['send_notifications'])) {
+				//no messages sent please.
+				return false;
+			}
+		} else {
+			// frontend request (either regular or via AJAX)
+			// TXN is NOT finalized ?
+			if (! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
+				return false;
+			}
+			// return visit but nothing changed ???
+			if (
+				isset($extra_details['revisit'], $extra_details['status_updates']) &&
+				$extra_details['revisit'] && ! $extra_details['status_updates']
+			) {
+				return false;
+			}
+			// NOT sending messages && reg status is something other than "Not-Approved"
+			if (
+				! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
+				$registration->status_ID() !== EEM_Registration::status_id_not_approved
+			) {
+				return false;
+			}
+		}
+		// release the kraken
+		return true;
+	}
+
+
+	/**
+	 * Simply returns an array indexed by Registration Status ID and the related message_type name associated with that
+	 * status id.
+	 *
+	 * @deprecated 4.9.0  Use EEH_MSG_Template::reg_status_to_message_type_array()
+	 *                    or EEH_MSG_Template::convert_reg_status_to_message_type
+	 * @param string $reg_status
+	 * @return array
+	 */
+	protected static function _get_reg_status_array($reg_status = '')
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
+			? EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
+			: EEH_MSG_Template::reg_status_to_message_type_array();
+	}
+
+
+	/**
+	 * Simply returns the payment message type for the given payment status.
+	 *
+	 * @deprecated 4.9.0 Use EEH_MSG_Template::payment_status_to_message_type_array
+	 *                   or EEH_MSG_Template::convert_payment_status_to_message_type
+	 * @param string $payment_status The payment status being matched.
+	 * @return string|bool The payment message type slug matching the status or false if no match.
+	 */
+	protected static function _get_payment_message_type($payment_status)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
+			? EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
+			: false;
+	}
+
+
+	/**
+	 * Message triggers for a resending already sent message(s) (via EE_Message list table)
+	 *
+	 * @access public
+	 * @param array $req_data This is the $_POST & $_GET data sent from EE_Admin Pages
+	 * @return bool          success/fail
+	 */
+	public static function process_resend($req_data)
+	{
+		self::_load_controller();
+
+		//if $msgID in this request then skip to the new resend_message
+		if (EE_Registry::instance()->REQ->get('MSG_ID')) {
+			return self::resend_message();
+		}
+
+		//make sure any incoming request data is set on the REQ so that it gets picked up later.
+		$req_data = (array)$req_data;
+		foreach ($req_data as $request_key => $request_value) {
+			EE_Registry::instance()->REQ->set($request_key, $request_value);
+		}
+
+		if (! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request()) {
+			return false;
+		}
+
+		try {
+			self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($messages_to_send);
+			self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
+		} catch (EE_Error $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		EE_Error::add_success(
+			__('Messages have been successfully queued for generation and sending.', 'event_espresso')
+		);
+		return true; //everything got queued.
+	}
+
+
+	/**
+	 * Message triggers for a resending already sent message(s) (via EE_Message list table)
+	 *
+	 * @return bool
+	 */
+	public static function resend_message()
+	{
+		self::_load_controller();
+
+		$msgID = EE_Registry::instance()->REQ->get('MSG_ID');
+		if (! $msgID) {
+			EE_Error::add_error(__('Something went wrong because there is no "MSG_ID" value in the request',
+				'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+
+		self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send((array)$msgID);
+
+		//setup success message.
+		$count_ready_for_resend = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
+		EE_Error::add_success(sprintf(
+			_n(
+				'There was %d message queued for resending.',
+				'There were %d messages queued for resending.',
+				$count_ready_for_resend,
+				'event_espresso'
+			),
+			$count_ready_for_resend
+		));
+		return true;
+	}
+
+
+	/**
+	 * Message triggers for manual payment applied by admin
+	 *
+	 * @param  EE_Payment $payment EE_payment object
+	 * @return bool              success/fail
+	 */
+	public static function process_admin_payment(EE_Payment $payment)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		//we need to get the transaction object
+		$transaction = $payment->transaction();
+		if ($transaction instanceof EE_Transaction) {
+			$data         = array($transaction, $payment);
+			$message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
+
+			//if payment amount is less than 0 then switch to payment_refund message type.
+			$message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
+
+			//if payment_refund is selected, but the status is NOT accepted.  Then change message type to false so NO message notification goes out.
+			$message_type = $message_type == 'payment_refund' && $payment->STS_ID() != EEM_Payment::status_id_approved ? false : $message_type;
+
+			self::_load_controller();
+
+			self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
+
+			//get count of queued for generation
+			$count_to_generate = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(array(
+				EEM_Message::status_incomplete,
+				EEM_Message::status_idle,
+			));
+
+			if ($count_to_generate > 0 && self::$_MSG_PROCESSOR->get_queue()->get_message_repository()->count() !== 0) {
+				add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
+				return true;
+			} else {
+				$count_failed = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::instance()->stati_indicating_failed_sending());
+				/**
+				 * Verify that there are actually errors.  If not then we return a success message because the queue might have been emptied due to successful
+				 * IMMEDIATE generation.
+				 */
+				if ($count_failed > 0) {
+					EE_Error::add_error(sprintf(
+						_n(
+							'The payment notification generation failed.',
+							'%d payment notifications failed being sent.',
+							$count_failed,
+							'event_espresso'
+						),
+						$count_failed
+					), __FILE__, __FUNCTION__, __LINE__);
+
+					return false;
+				} else {
+					add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
+					return true;
+				}
+			}
+		} else {
+			EE_Error::add_error(
+				'Unable to generate the payment notification because the given value for the transaction is invalid.',
+				'event_espresso'
+			);
+			return false;
+		}
+	}
+
+
+	/**
+	 * Callback for AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send_with_registrations trigger
+	 *
+	 * @since   4.3.0
+	 * @param  EE_Registration[] $registrations an array of EE_Registration objects
+	 * @param  int               $grp_id        a specific message template group id.
+	 * @return void
+	 */
+	public static function send_newsletter_message($registrations, $grp_id)
+	{
+		//make sure mtp is id and set it in the EE_Request Handler later messages setup.
+		EE_Registry::instance()->REQ->set('GRP_ID', (int)$grp_id);
+		self::_load_controller();
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('newsletter', $registrations);
+	}
+
+
+	/**
+	 * Callback for FHEE__EE_Registration__invoice_url__invoice_url or FHEE__EE_Registration__receipt_url__receipt_url
+	 *
+	 * @since   4.3.0
+	 * @param    string          $registration_message_trigger_url
+	 * @param    EE_Registration $registration
+	 * @param string             $messenger
+	 * @param string             $message_type
+	 * @return    string
+	 */
+	public static function registration_message_trigger_url(
+		$registration_message_trigger_url,
+		EE_Registration $registration,
+		$messenger = 'html',
+		$message_type = 'invoice'
+	) {
+		// whitelist $messenger
+		switch ($messenger) {
+			case 'pdf' :
+				$sending_messenger    = 'pdf';
+				$generating_messenger = 'html';
+				break;
+			case 'html' :
+			default :
+				$sending_messenger    = 'html';
+				$generating_messenger = 'html';
+				break;
+		}
+		// whitelist $message_type
+		switch ($message_type) {
+			case 'receipt' :
+				$message_type = 'receipt';
+				break;
+			case 'invoice' :
+			default :
+				$message_type = 'invoice';
+				break;
+		}
+		// verify that both the messenger AND the message type are active
+		if (EEH_MSG_Template::is_messenger_active($sending_messenger) && EEH_MSG_Template::is_mt_active($message_type)) {
+			//need to get the correct message template group for this (i.e. is there a custom invoice for the event this registration is registered for?)
+			$template_query_params = array(
+				'MTP_is_active'    => true,
+				'MTP_messenger'    => $generating_messenger,
+				'MTP_message_type' => $message_type,
+				'Event.EVT_ID'     => $registration->event_ID(),
+			);
+			//get the message template group.
+			$msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
+			//if we don't have an EE_Message_Template_Group then return
+			if (! $msg_template_group instanceof EE_Message_Template_Group) {
+				// remove EVT_ID from query params so that global templates get picked up
+				unset($template_query_params['Event.EVT_ID']);
+				//get global template as the fallback
+				$msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
+			}
+			//if we don't have an EE_Message_Template_Group then return
+			if (! $msg_template_group instanceof EE_Message_Template_Group) {
+				return '';
+			}
+			// generate the URL
+			$registration_message_trigger_url = EEH_MSG_Template::generate_url_trigger(
+				$sending_messenger,
+				$generating_messenger,
+				'purchaser',
+				$message_type,
+				$registration,
+				$msg_template_group->ID(),
+				$registration->transaction_ID()
+			);
+
+		}
+		return $registration_message_trigger_url;
+	}
+
+
+	/**
+	 * Use to generate and return a message preview!
+	 *
+	 * @param  string $type      This should correspond with a valid message type
+	 * @param  string $context   This should correspond with a valid context for the message type
+	 * @param  string $messenger This should correspond with a valid messenger.
+	 * @param bool    $send      true we will do a test send using the messenger delivery, false we just do a regular
+	 *                           preview
+	 * @return bool|string The body of the message or if send is requested, sends.
+	 * @throws EE_Error
+	 */
+	public static function preview_message($type, $context, $messenger, $send = false)
+	{
+		self::_load_controller();
+		$mtg                     = new EE_Message_To_Generate(
+			$messenger,
+			$type,
+			array(),
+			$context,
+			true
+		);
+		$generated_preview_queue = self::$_MSG_PROCESSOR->generate_for_preview($mtg, $send);
+		if ($generated_preview_queue instanceof EE_Messages_Queue) {
+			$content = $generated_preview_queue->get_message_repository()->current()->content();
+			//if the current message was persisted to the db (which will happen with any extra fields on a message) then
+			//let's delete it because we don't need previews cluttering up the db.
+			if ($generated_preview_queue->get_message_repository()->current()->ID() > 0
+				&& $generated_preview_queue->get_message_repository()->current()->STS_ID() !== EEM_Message::status_failed
+			) {
+				$generated_preview_queue->get_message_repository()->delete();
+			}
+			return $content;
+		} else {
+			return $generated_preview_queue;
+		}
+	}
+
+
+	/**
+	 * This is a method that allows for sending a message using a messenger matching the string given and the provided
+	 * EE_Message_Queue object.  The EE_Message_Queue object is used to create a single aggregate EE_Message via the
+	 * content found in the EE_Message objects in the queue.
+	 *
+	 * @since 4.9.0
+	 * @param string            $messenger            a string matching a valid active messenger in the system
+	 * @param string            $message_type         Although it seems contrary to the name of the method, a message
+	 *                                                type name is still required to send along the message type to the
+	 *                                                messenger because this is used for determining what specific
+	 *                                                variations might be loaded for the generated message.
+	 * @param EE_Messages_Queue $queue
+	 * @param string            $custom_subject       Can be used to set what the custom subject string will be on the
+	 *                                                aggregate EE_Message object.
+	 * @return bool          success or fail.
+	 */
+	public static function send_message_with_messenger_only(
+		$messenger,
+		$message_type,
+		EE_Messages_Queue $queue,
+		$custom_subject = ''
+	) {
+		self::_load_controller();
+		/** @type EE_Message_To_Generate_From_Queue $message_to_generate */
+		$message_to_generate = EE_Registry::instance()->load_lib(
+			'Message_To_Generate_From_Queue',
+			array(
+				$messenger,
+				$message_type,
+				$queue,
+				$custom_subject,
+			)
+		);
+		return self::$_MSG_PROCESSOR->queue_for_sending($message_to_generate);
+	}
+
+
+	/**
+	 * Generates Messages immediately for EE_Message IDs (but only for the correct status for generation)
+	 *
+	 * @since 4.9.0
+	 * @param array $message_ids An array of message ids
+	 * @return bool | EE_Messages_Queue     false if nothing was generated, EE_Messages_Queue containing generated
+	 *              messages.
+	 */
+	public static function generate_now($message_ids)
+	{
+		self::_load_controller();
+		$messages        = EEM_Message::instance()->get_all(
+			array(
+				0 => array(
+					'MSG_ID' => array('IN', $message_ids),
+					'STS_ID' => EEM_Message::status_incomplete,
+				),
+			)
+		);
+		$generated_queue = false;
+		if ($messages) {
+			$generated_queue = self::$_MSG_PROCESSOR->batch_generate_from_queue($messages);
+		}
+
+		if (! $generated_queue instanceof EE_Messages_Queue) {
+			EE_Error::add_error(
+				__('The messages were not generated. This could mean there is already a batch being generated on a separate request, or because the selected messages are not ready for generation. Please wait a minute or two and try again.',
+					'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+		return $generated_queue;
+	}
+
+
+	/**
+	 * Sends messages immediately for the incoming message_ids that have the status of EEM_Message::status_resend or,
+	 * EEM_Message::status_idle
+	 *
+	 * @since 4.9.0
+	 * @param $message_ids
+	 * @return bool | EE_Messages_Queue  false if no messages sent.
+	 */
+	public static function send_now($message_ids)
+	{
+		self::_load_controller();
+		$messages   = EEM_Message::instance()->get_all(
+			array(
+				0 => array(
+					'MSG_ID' => array('IN', $message_ids),
+					'STS_ID' => array(
+						'IN',
+						array(EEM_Message::status_idle, EEM_Message::status_resend, EEM_Message::status_retry),
+					),
+				),
+			)
+		);
+		$sent_queue = false;
+		if ($messages) {
+			$sent_queue = self::$_MSG_PROCESSOR->batch_send_from_queue($messages);
+		}
+
+		if (! $sent_queue instanceof EE_Messages_Queue) {
+			EE_Error::add_error(
+				__('The messages were not sent. This could mean there is already a batch being sent on a separate request, or because the selected messages are not sendable. Please wait a minute or two and try again.',
+					'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		} else {
+			//can count how many sent by using the messages in the queue
+			$sent_count = $sent_queue->count_STS_in_queue(EEM_Message::instance()->stati_indicating_sent());
+			if ($sent_count > 0) {
+				EE_Error::add_success(
+					sprintf(
+						_n(
+							'There was %d message successfully sent.',
+							'There were %d messages successfully sent.',
+							$sent_count,
+							'event_espresso'
+						),
+						$sent_count
+					)
+				);
+			} else {
+				EE_Error::overwrite_errors();
+				EE_Error::add_error(
+					__('No message was sent because of problems with sending. Either all the messages you selected were not a sendable message, they were ALREADY sent on a different scheduled task, or there was an error.
 					If there was an error, you can look at the messages in the message activity list table for any error messages.',
-                        'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-        }
-        return $sent_queue;
-    }
-
-
-    /**
-     * This will queue the incoming message ids for resending.
-     * Note, only message_ids corresponding to messages with the status of EEM_Message::sent will be queued.
-     *
-     * @since 4.9.0
-     * @param array $message_ids An array of EE_Message IDs
-     * @return bool  true means messages were successfully queued for resending, false means none were queued for
-     *               resending.
-     */
-    public static function queue_for_resending($message_ids)
-    {
-        self::_load_controller();
-        self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send($message_ids);
-
-        //get queue and count
-        $queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
-
-        if (
-            $queue_count > 0
-        ) {
-            EE_Error::add_success(
-                sprintf(
-                    _n(
-                        '%d message successfully queued for resending.',
-                        '%d messages successfully queued for resending.',
-                        $queue_count,
-                        'event_espresso'
-                    ),
-                    $queue_count
-                )
-            );
-            /**
-             * @see filter usage in EE_Messages_Queue::initiate_request_by_priority
-             */
-        } elseif (
-            apply_filters('FHEE__EE_Messages_Processor__initiate_request_by_priority__do_immediate_processing', true)
-            || EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request
-        ) {
-            $queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_sent);
-            if ($queue_count > 0) {
-                EE_Error::add_success(
-                    sprintf(
-                        _n(
-                            '%d message successfully sent.',
-                            '%d messages successfully sent.',
-                            $queue_count,
-                            'event_espresso'
-                        ),
-                        $queue_count
-                    )
-                );
-            } else {
-                EE_Error::add_error(
-                    __('No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
-                        'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(
-                __('No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
-                    'event_espresso'),
-                __FILE__, __FUNCTION__, __LINE__
-            );
-        }
-        return (bool)$queue_count;
-    }
-
-
-    /**
-     * debug
-     *
-     * @param string          $class
-     * @param string          $func
-     * @param string          $line
-     * @param \EE_Transaction $transaction
-     * @param array           $info
-     * @param bool            $display_request
-     */
-    protected static function log(
-        $class = '',
-        $func = '',
-        $line = '',
-        EE_Transaction $transaction,
-        $info = array(),
-        $display_request = false
-    ) {
-        if (WP_DEBUG && false) {
-            if ($transaction instanceof EE_Transaction) {
-                // don't serialize objects
-                $info                  = EEH_Debug_Tools::strip_objects($info);
-                $info['TXN_status']    = $transaction->status_ID();
-                $info['TXN_reg_steps'] = $transaction->reg_steps();
-                if ($transaction->ID()) {
-                    $index = 'EE_Transaction: ' . $transaction->ID();
-                    EEH_Debug_Tools::log($class, $func, $line, $info, $display_request, $index);
-                }
-            }
-        }
-
-    }
-
-
-    /**
-     *  Resets all the static properties in this class when called.
-     */
-    public static function reset()
-    {
-        self::$_EEMSG                    = null;
-        self::$_message_resource_manager = null;
-        self::$_MSG_PROCESSOR            = null;
-        self::$_MSG_PATHS                = null;
-        self::$_TMP_PACKS                = array();
-    }
+						'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+		}
+		return $sent_queue;
+	}
+
+
+	/**
+	 * This will queue the incoming message ids for resending.
+	 * Note, only message_ids corresponding to messages with the status of EEM_Message::sent will be queued.
+	 *
+	 * @since 4.9.0
+	 * @param array $message_ids An array of EE_Message IDs
+	 * @return bool  true means messages were successfully queued for resending, false means none were queued for
+	 *               resending.
+	 */
+	public static function queue_for_resending($message_ids)
+	{
+		self::_load_controller();
+		self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send($message_ids);
+
+		//get queue and count
+		$queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
+
+		if (
+			$queue_count > 0
+		) {
+			EE_Error::add_success(
+				sprintf(
+					_n(
+						'%d message successfully queued for resending.',
+						'%d messages successfully queued for resending.',
+						$queue_count,
+						'event_espresso'
+					),
+					$queue_count
+				)
+			);
+			/**
+			 * @see filter usage in EE_Messages_Queue::initiate_request_by_priority
+			 */
+		} elseif (
+			apply_filters('FHEE__EE_Messages_Processor__initiate_request_by_priority__do_immediate_processing', true)
+			|| EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request
+		) {
+			$queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_sent);
+			if ($queue_count > 0) {
+				EE_Error::add_success(
+					sprintf(
+						_n(
+							'%d message successfully sent.',
+							'%d messages successfully sent.',
+							$queue_count,
+							'event_espresso'
+						),
+						$queue_count
+					)
+				);
+			} else {
+				EE_Error::add_error(
+					__('No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
+						'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(
+				__('No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
+					'event_espresso'),
+				__FILE__, __FUNCTION__, __LINE__
+			);
+		}
+		return (bool)$queue_count;
+	}
+
+
+	/**
+	 * debug
+	 *
+	 * @param string          $class
+	 * @param string          $func
+	 * @param string          $line
+	 * @param \EE_Transaction $transaction
+	 * @param array           $info
+	 * @param bool            $display_request
+	 */
+	protected static function log(
+		$class = '',
+		$func = '',
+		$line = '',
+		EE_Transaction $transaction,
+		$info = array(),
+		$display_request = false
+	) {
+		if (WP_DEBUG && false) {
+			if ($transaction instanceof EE_Transaction) {
+				// don't serialize objects
+				$info                  = EEH_Debug_Tools::strip_objects($info);
+				$info['TXN_status']    = $transaction->status_ID();
+				$info['TXN_reg_steps'] = $transaction->reg_steps();
+				if ($transaction->ID()) {
+					$index = 'EE_Transaction: ' . $transaction->ID();
+					EEH_Debug_Tools::log($class, $func, $line, $info, $display_request, $index);
+				}
+			}
+		}
+
+	}
+
+
+	/**
+	 *  Resets all the static properties in this class when called.
+	 */
+	public static function reset()
+	{
+		self::$_EEMSG                    = null;
+		self::$_message_resource_manager = null;
+		self::$_MSG_PROCESSOR            = null;
+		self::$_MSG_PATHS                = null;
+		self::$_TMP_PACKS                = array();
+	}
 
 }
 // End of file EED_Messages.module.php

espresso.php

Indentation +219 added lines, -219 removed lines

@@ -1,5 +1,5 @@ 
 <?php if ( ! defined('ABSPATH')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 /*
   Plugin Name:		Event Espresso
@@ -40,243 +40,243 @@ 
  * @since            4.0
  */
 if (function_exists('espresso_version')) {
-    /**
-     *    espresso_duplicate_plugin_error
-     *    displays if more than one version of EE is activated at the same time
-     */
-    function espresso_duplicate_plugin_error()
-    {
-        ?>
+	/**
+	 *    espresso_duplicate_plugin_error
+	 *    displays if more than one version of EE is activated at the same time
+	 */
+	function espresso_duplicate_plugin_error()
+	{
+		?>
         <div class="error">
             <p>
                 <?php echo esc_html__(
-                        'Can not run multiple versions of Event Espresso! One version has been automatically deactivated. Please verify that you have the correct version you want still active.',
-                        'event_espresso'
-                ); ?>
+						'Can not run multiple versions of Event Espresso! One version has been automatically deactivated. Please verify that you have the correct version you want still active.',
+						'event_espresso'
+				); ?>
             </p>
         </div>
         <?php
-        espresso_deactivate_plugin(plugin_basename(__FILE__));
-    }
+		espresso_deactivate_plugin(plugin_basename(__FILE__));
+	}
 
-    add_action('admin_notices', 'espresso_duplicate_plugin_error', 1);
+	add_action('admin_notices', 'espresso_duplicate_plugin_error', 1);
 } else {
-    define('EE_MIN_PHP_VER_REQUIRED', '5.3.9');
-    if ( ! version_compare(PHP_VERSION, EE_MIN_PHP_VER_REQUIRED, '>=')) {
-        /**
-         * espresso_minimum_php_version_error
-         *
-         * @return void
-         */
-        function espresso_minimum_php_version_error()
-        {
-            ?>
+	define('EE_MIN_PHP_VER_REQUIRED', '5.3.9');
+	if ( ! version_compare(PHP_VERSION, EE_MIN_PHP_VER_REQUIRED, '>=')) {
+		/**
+		 * espresso_minimum_php_version_error
+		 *
+		 * @return void
+		 */
+		function espresso_minimum_php_version_error()
+		{
+			?>
             <div class="error">
                 <p>
                     <?php
-                    printf(
-                            esc_html__(
-                                    'We\'re sorry, but Event Espresso requires PHP version %1$s or greater in order to operate. You are currently running version %2$s.%3$sIn order to update your version of PHP, you will need to contact your current hosting provider.%3$sFor information on stable PHP versions, please go to %4$s.',
-                                    'event_espresso'
-                            ),
-                            EE_MIN_PHP_VER_REQUIRED,
-                            PHP_VERSION,
-                            '<br/>',
-                            '<a href="http://php.net/downloads.php">http://php.net/downloads.php</a>'
-                    );
-                    ?>
+					printf(
+							esc_html__(
+									'We\'re sorry, but Event Espresso requires PHP version %1$s or greater in order to operate. You are currently running version %2$s.%3$sIn order to update your version of PHP, you will need to contact your current hosting provider.%3$sFor information on stable PHP versions, please go to %4$s.',
+									'event_espresso'
+							),
+							EE_MIN_PHP_VER_REQUIRED,
+							PHP_VERSION,
+							'<br/>',
+							'<a href="http://php.net/downloads.php">http://php.net/downloads.php</a>'
+					);
+					?>
                 </p>
             </div>
             <?php
-            espresso_deactivate_plugin(plugin_basename(__FILE__));
-        }
+			espresso_deactivate_plugin(plugin_basename(__FILE__));
+		}
 
-        add_action('admin_notices', 'espresso_minimum_php_version_error', 1);
-    } else {
-        /**
-         * espresso_version
-         * Returns the plugin version
-         *
-         * @return string
-         */
-        function espresso_version()
-        {
-            return apply_filters('FHEE__espresso__espresso_version', '4.9.46.rc.054');
-        }
+		add_action('admin_notices', 'espresso_minimum_php_version_error', 1);
+	} else {
+		/**
+		 * espresso_version
+		 * Returns the plugin version
+		 *
+		 * @return string
+		 */
+		function espresso_version()
+		{
+			return apply_filters('FHEE__espresso__espresso_version', '4.9.46.rc.054');
+		}
 
-        // define versions
-        define('EVENT_ESPRESSO_VERSION', espresso_version());
-        define('EE_MIN_WP_VER_REQUIRED', '4.1');
-        define('EE_MIN_WP_VER_RECOMMENDED', '4.4.2');
-        define('EE_MIN_PHP_VER_RECOMMENDED', '5.4.44');
-        define('EVENT_ESPRESSO_MAIN_FILE', __FILE__);
-        //used to be DIRECTORY_SEPARATOR, but that caused issues on windows
-        if ( ! defined('DS')) {
-            define('DS', '/');
-        }
-        if ( ! defined('PS')) {
-            define('PS', PATH_SEPARATOR);
-        }
-        if ( ! defined('SP')) {
-            define('SP', ' ');
-        }
-        if ( ! defined('EENL')) {
-            define('EENL', "\n");
-        }
-        define('EE_SUPPORT_EMAIL', 'support@eventespresso.com');
-        // define the plugin directory and URL
-        define('EE_PLUGIN_BASENAME', plugin_basename(EVENT_ESPRESSO_MAIN_FILE));
-        define('EE_PLUGIN_DIR_PATH', plugin_dir_path(EVENT_ESPRESSO_MAIN_FILE));
-        define('EE_PLUGIN_DIR_URL', plugin_dir_url(EVENT_ESPRESSO_MAIN_FILE));
-        // main root folder paths
-        define('EE_ADMIN_PAGES', EE_PLUGIN_DIR_PATH . 'admin_pages' . DS);
-        define('EE_CORE', EE_PLUGIN_DIR_PATH . 'core' . DS);
-        define('EE_MODULES', EE_PLUGIN_DIR_PATH . 'modules' . DS);
-        define('EE_PUBLIC', EE_PLUGIN_DIR_PATH . 'public' . DS);
-        define('EE_SHORTCODES', EE_PLUGIN_DIR_PATH . 'shortcodes' . DS);
-        define('EE_WIDGETS', EE_PLUGIN_DIR_PATH . 'widgets' . DS);
-        define('EE_PAYMENT_METHODS', EE_PLUGIN_DIR_PATH . 'payment_methods' . DS);
-        define('EE_CAFF_PATH', EE_PLUGIN_DIR_PATH . 'caffeinated' . DS);
-        // core system paths
-        define('EE_ADMIN', EE_CORE . 'admin' . DS);
-        define('EE_CPTS', EE_CORE . 'CPTs' . DS);
-        define('EE_CLASSES', EE_CORE . 'db_classes' . DS);
-        define('EE_INTERFACES', EE_CORE . 'interfaces' . DS);
-        define('EE_BUSINESS', EE_CORE . 'business' . DS);
-        define('EE_MODELS', EE_CORE . 'db_models' . DS);
-        define('EE_HELPERS', EE_CORE . 'helpers' . DS);
-        define('EE_LIBRARIES', EE_CORE . 'libraries' . DS);
-        define('EE_TEMPLATES', EE_CORE . 'templates' . DS);
-        define('EE_THIRD_PARTY', EE_CORE . 'third_party_libs' . DS);
-        define('EE_GLOBAL_ASSETS', EE_TEMPLATES . 'global_assets' . DS);
-        define('EE_FORM_SECTIONS', EE_LIBRARIES . 'form_sections' . DS);
-        // gateways
-        define('EE_GATEWAYS', EE_MODULES . 'gateways' . DS);
-        define('EE_GATEWAYS_URL', EE_PLUGIN_DIR_URL . 'modules' . DS . 'gateways' . DS);
-        // asset URL paths
-        define('EE_TEMPLATES_URL', EE_PLUGIN_DIR_URL . 'core' . DS . 'templates' . DS);
-        define('EE_GLOBAL_ASSETS_URL', EE_TEMPLATES_URL . 'global_assets' . DS);
-        define('EE_IMAGES_URL', EE_GLOBAL_ASSETS_URL . 'images' . DS);
-        define('EE_THIRD_PARTY_URL', EE_PLUGIN_DIR_URL . 'core' . DS . 'third_party_libs' . DS);
-        define('EE_HELPERS_ASSETS', EE_PLUGIN_DIR_URL . 'core/helpers/assets/');
-        define('EE_LIBRARIES_URL', EE_PLUGIN_DIR_URL . 'core/libraries/');
-        // define upload paths
-        $uploads = wp_upload_dir();
-        // define the uploads directory and URL
-        define('EVENT_ESPRESSO_UPLOAD_DIR', $uploads['basedir'] . DS . 'espresso' . DS);
-        define('EVENT_ESPRESSO_UPLOAD_URL', $uploads['baseurl'] . DS . 'espresso' . DS);
-        // define the templates directory and URL
-        define('EVENT_ESPRESSO_TEMPLATE_DIR', $uploads['basedir'] . DS . 'espresso' . DS . 'templates' . DS);
-        define('EVENT_ESPRESSO_TEMPLATE_URL', $uploads['baseurl'] . DS . 'espresso' . DS . 'templates' . DS);
-        // define the gateway directory and URL
-        define('EVENT_ESPRESSO_GATEWAY_DIR', $uploads['basedir'] . DS . 'espresso' . DS . 'gateways' . DS);
-        define('EVENT_ESPRESSO_GATEWAY_URL', $uploads['baseurl'] . DS . 'espresso' . DS . 'gateways' . DS);
-        // languages folder/path
-        define('EE_LANGUAGES_SAFE_LOC', '..' . DS . 'uploads' . DS . 'espresso' . DS . 'languages' . DS);
-        define('EE_LANGUAGES_SAFE_DIR', EVENT_ESPRESSO_UPLOAD_DIR . 'languages' . DS);
-        //check for dompdf fonts in uploads
-        if (file_exists(EVENT_ESPRESSO_UPLOAD_DIR . 'fonts' . DS)) {
-            define('DOMPDF_FONT_DIR', EVENT_ESPRESSO_UPLOAD_DIR . 'fonts' . DS);
-        }
-        //ajax constants
-        define(
-                'EE_FRONT_AJAX',
-                isset($_REQUEST['ee_front_ajax']) || isset($_REQUEST['data']['ee_front_ajax']) ? true : false
-        );
-        define(
-                'EE_ADMIN_AJAX',
-                isset($_REQUEST['ee_admin_ajax']) || isset($_REQUEST['data']['ee_admin_ajax']) ? true : false
-        );
-        //just a handy constant occasionally needed for finding values representing infinity in the DB
-        //you're better to use this than its straight value (currently -1) in case you ever
-        //want to change its default value! or find when -1 means infinity
-        define('EE_INF_IN_DB', -1);
-        define('EE_INF', INF > (float)PHP_INT_MAX ? INF : PHP_INT_MAX);
-        define('EE_DEBUG', false);
-        // for older WP versions
-        if ( ! defined('MONTH_IN_SECONDS')) {
-            define('MONTH_IN_SECONDS', DAY_IN_SECONDS * 30);
-        }
-        /**
-         *    espresso_plugin_activation
-         *    adds a wp-option to indicate that EE has been activated via the WP admin plugins page
-         */
-        function espresso_plugin_activation()
-        {
-            update_option('ee_espresso_activation', true);
-        }
+		// define versions
+		define('EVENT_ESPRESSO_VERSION', espresso_version());
+		define('EE_MIN_WP_VER_REQUIRED', '4.1');
+		define('EE_MIN_WP_VER_RECOMMENDED', '4.4.2');
+		define('EE_MIN_PHP_VER_RECOMMENDED', '5.4.44');
+		define('EVENT_ESPRESSO_MAIN_FILE', __FILE__);
+		//used to be DIRECTORY_SEPARATOR, but that caused issues on windows
+		if ( ! defined('DS')) {
+			define('DS', '/');
+		}
+		if ( ! defined('PS')) {
+			define('PS', PATH_SEPARATOR);
+		}
+		if ( ! defined('SP')) {
+			define('SP', ' ');
+		}
+		if ( ! defined('EENL')) {
+			define('EENL', "\n");
+		}
+		define('EE_SUPPORT_EMAIL', 'support@eventespresso.com');
+		// define the plugin directory and URL
+		define('EE_PLUGIN_BASENAME', plugin_basename(EVENT_ESPRESSO_MAIN_FILE));
+		define('EE_PLUGIN_DIR_PATH', plugin_dir_path(EVENT_ESPRESSO_MAIN_FILE));
+		define('EE_PLUGIN_DIR_URL', plugin_dir_url(EVENT_ESPRESSO_MAIN_FILE));
+		// main root folder paths
+		define('EE_ADMIN_PAGES', EE_PLUGIN_DIR_PATH . 'admin_pages' . DS);
+		define('EE_CORE', EE_PLUGIN_DIR_PATH . 'core' . DS);
+		define('EE_MODULES', EE_PLUGIN_DIR_PATH . 'modules' . DS);
+		define('EE_PUBLIC', EE_PLUGIN_DIR_PATH . 'public' . DS);
+		define('EE_SHORTCODES', EE_PLUGIN_DIR_PATH . 'shortcodes' . DS);
+		define('EE_WIDGETS', EE_PLUGIN_DIR_PATH . 'widgets' . DS);
+		define('EE_PAYMENT_METHODS', EE_PLUGIN_DIR_PATH . 'payment_methods' . DS);
+		define('EE_CAFF_PATH', EE_PLUGIN_DIR_PATH . 'caffeinated' . DS);
+		// core system paths
+		define('EE_ADMIN', EE_CORE . 'admin' . DS);
+		define('EE_CPTS', EE_CORE . 'CPTs' . DS);
+		define('EE_CLASSES', EE_CORE . 'db_classes' . DS);
+		define('EE_INTERFACES', EE_CORE . 'interfaces' . DS);
+		define('EE_BUSINESS', EE_CORE . 'business' . DS);
+		define('EE_MODELS', EE_CORE . 'db_models' . DS);
+		define('EE_HELPERS', EE_CORE . 'helpers' . DS);
+		define('EE_LIBRARIES', EE_CORE . 'libraries' . DS);
+		define('EE_TEMPLATES', EE_CORE . 'templates' . DS);
+		define('EE_THIRD_PARTY', EE_CORE . 'third_party_libs' . DS);
+		define('EE_GLOBAL_ASSETS', EE_TEMPLATES . 'global_assets' . DS);
+		define('EE_FORM_SECTIONS', EE_LIBRARIES . 'form_sections' . DS);
+		// gateways
+		define('EE_GATEWAYS', EE_MODULES . 'gateways' . DS);
+		define('EE_GATEWAYS_URL', EE_PLUGIN_DIR_URL . 'modules' . DS . 'gateways' . DS);
+		// asset URL paths
+		define('EE_TEMPLATES_URL', EE_PLUGIN_DIR_URL . 'core' . DS . 'templates' . DS);
+		define('EE_GLOBAL_ASSETS_URL', EE_TEMPLATES_URL . 'global_assets' . DS);
+		define('EE_IMAGES_URL', EE_GLOBAL_ASSETS_URL . 'images' . DS);
+		define('EE_THIRD_PARTY_URL', EE_PLUGIN_DIR_URL . 'core' . DS . 'third_party_libs' . DS);
+		define('EE_HELPERS_ASSETS', EE_PLUGIN_DIR_URL . 'core/helpers/assets/');
+		define('EE_LIBRARIES_URL', EE_PLUGIN_DIR_URL . 'core/libraries/');
+		// define upload paths
+		$uploads = wp_upload_dir();
+		// define the uploads directory and URL
+		define('EVENT_ESPRESSO_UPLOAD_DIR', $uploads['basedir'] . DS . 'espresso' . DS);
+		define('EVENT_ESPRESSO_UPLOAD_URL', $uploads['baseurl'] . DS . 'espresso' . DS);
+		// define the templates directory and URL
+		define('EVENT_ESPRESSO_TEMPLATE_DIR', $uploads['basedir'] . DS . 'espresso' . DS . 'templates' . DS);
+		define('EVENT_ESPRESSO_TEMPLATE_URL', $uploads['baseurl'] . DS . 'espresso' . DS . 'templates' . DS);
+		// define the gateway directory and URL
+		define('EVENT_ESPRESSO_GATEWAY_DIR', $uploads['basedir'] . DS . 'espresso' . DS . 'gateways' . DS);
+		define('EVENT_ESPRESSO_GATEWAY_URL', $uploads['baseurl'] . DS . 'espresso' . DS . 'gateways' . DS);
+		// languages folder/path
+		define('EE_LANGUAGES_SAFE_LOC', '..' . DS . 'uploads' . DS . 'espresso' . DS . 'languages' . DS);
+		define('EE_LANGUAGES_SAFE_DIR', EVENT_ESPRESSO_UPLOAD_DIR . 'languages' . DS);
+		//check for dompdf fonts in uploads
+		if (file_exists(EVENT_ESPRESSO_UPLOAD_DIR . 'fonts' . DS)) {
+			define('DOMPDF_FONT_DIR', EVENT_ESPRESSO_UPLOAD_DIR . 'fonts' . DS);
+		}
+		//ajax constants
+		define(
+				'EE_FRONT_AJAX',
+				isset($_REQUEST['ee_front_ajax']) || isset($_REQUEST['data']['ee_front_ajax']) ? true : false
+		);
+		define(
+				'EE_ADMIN_AJAX',
+				isset($_REQUEST['ee_admin_ajax']) || isset($_REQUEST['data']['ee_admin_ajax']) ? true : false
+		);
+		//just a handy constant occasionally needed for finding values representing infinity in the DB
+		//you're better to use this than its straight value (currently -1) in case you ever
+		//want to change its default value! or find when -1 means infinity
+		define('EE_INF_IN_DB', -1);
+		define('EE_INF', INF > (float)PHP_INT_MAX ? INF : PHP_INT_MAX);
+		define('EE_DEBUG', false);
+		// for older WP versions
+		if ( ! defined('MONTH_IN_SECONDS')) {
+			define('MONTH_IN_SECONDS', DAY_IN_SECONDS * 30);
+		}
+		/**
+		 *    espresso_plugin_activation
+		 *    adds a wp-option to indicate that EE has been activated via the WP admin plugins page
+		 */
+		function espresso_plugin_activation()
+		{
+			update_option('ee_espresso_activation', true);
+		}
 
-        register_activation_hook(EVENT_ESPRESSO_MAIN_FILE, 'espresso_plugin_activation');
-        /**
-         *    espresso_load_error_handling
-         *    this function loads EE's class for handling exceptions and errors
-         */
-        function espresso_load_error_handling()
-        {
-            // load debugging tools
-            if (WP_DEBUG === true && is_readable(EE_HELPERS . 'EEH_Debug_Tools.helper.php')) {
-                require_once(EE_HELPERS . 'EEH_Debug_Tools.helper.php');
-                EEH_Debug_Tools::instance();
-            }
-            // load error handling
-            if (is_readable(EE_CORE . 'EE_Error.core.php')) {
-                require_once(EE_CORE . 'EE_Error.core.php');
-            } else {
-                wp_die(esc_html__('The EE_Error core class could not be loaded.', 'event_espresso'));
-            }
-        }
+		register_activation_hook(EVENT_ESPRESSO_MAIN_FILE, 'espresso_plugin_activation');
+		/**
+		 *    espresso_load_error_handling
+		 *    this function loads EE's class for handling exceptions and errors
+		 */
+		function espresso_load_error_handling()
+		{
+			// load debugging tools
+			if (WP_DEBUG === true && is_readable(EE_HELPERS . 'EEH_Debug_Tools.helper.php')) {
+				require_once(EE_HELPERS . 'EEH_Debug_Tools.helper.php');
+				EEH_Debug_Tools::instance();
+			}
+			// load error handling
+			if (is_readable(EE_CORE . 'EE_Error.core.php')) {
+				require_once(EE_CORE . 'EE_Error.core.php');
+			} else {
+				wp_die(esc_html__('The EE_Error core class could not be loaded.', 'event_espresso'));
+			}
+		}
 
-        /**
-         *    espresso_load_required
-         *    given a class name and path, this function will load that file or throw an exception
-         *
-         * @param    string $classname
-         * @param    string $full_path_to_file
-         * @throws    EE_Error
-         */
-        function espresso_load_required($classname, $full_path_to_file)
-        {
-            static $error_handling_loaded = false;
-            if ( ! $error_handling_loaded) {
-                espresso_load_error_handling();
-                $error_handling_loaded = true;
-            }
-            if (is_readable($full_path_to_file)) {
-                require_once($full_path_to_file);
-            } else {
-                throw new EE_Error (
-                        sprintf(
-                                esc_html__(
-                                        'The %s class file could not be located or is not readable due to file permissions.',
-                                        'event_espresso'
-                                ),
-                                $classname
-                        )
-                );
-            }
-        }
+		/**
+		 *    espresso_load_required
+		 *    given a class name and path, this function will load that file or throw an exception
+		 *
+		 * @param    string $classname
+		 * @param    string $full_path_to_file
+		 * @throws    EE_Error
+		 */
+		function espresso_load_required($classname, $full_path_to_file)
+		{
+			static $error_handling_loaded = false;
+			if ( ! $error_handling_loaded) {
+				espresso_load_error_handling();
+				$error_handling_loaded = true;
+			}
+			if (is_readable($full_path_to_file)) {
+				require_once($full_path_to_file);
+			} else {
+				throw new EE_Error (
+						sprintf(
+								esc_html__(
+										'The %s class file could not be located or is not readable due to file permissions.',
+										'event_espresso'
+								),
+								$classname
+						)
+				);
+			}
+		}
 
-        espresso_load_required('EEH_Base', EE_CORE . 'helpers' . DS . 'EEH_Base.helper.php');
-        espresso_load_required('EEH_File', EE_CORE . 'helpers' . DS . 'EEH_File.helper.php');
-        espresso_load_required('EE_Bootstrap', EE_CORE . 'EE_Bootstrap.core.php');
-        new EE_Bootstrap();
-    }
+		espresso_load_required('EEH_Base', EE_CORE . 'helpers' . DS . 'EEH_Base.helper.php');
+		espresso_load_required('EEH_File', EE_CORE . 'helpers' . DS . 'EEH_File.helper.php');
+		espresso_load_required('EE_Bootstrap', EE_CORE . 'EE_Bootstrap.core.php');
+		new EE_Bootstrap();
+	}
 }
 if ( ! function_exists('espresso_deactivate_plugin')) {
-    /**
-     *    deactivate_plugin
-     * usage:  espresso_deactivate_plugin( plugin_basename( __FILE__ ));
-     *
-     * @access public
-     * @param string $plugin_basename - the results of plugin_basename( __FILE__ ) for the plugin's main file
-     * @return    void
-     */
-    function espresso_deactivate_plugin($plugin_basename = '')
-    {
-        if ( ! function_exists('deactivate_plugins')) {
-            require_once(ABSPATH . 'wp-admin/includes/plugin.php');
-        }
-        unset($_GET['activate'], $_REQUEST['activate']);
-        deactivate_plugins($plugin_basename);
-    }
+	/**
+	 *    deactivate_plugin
+	 * usage:  espresso_deactivate_plugin( plugin_basename( __FILE__ ));
+	 *
+	 * @access public
+	 * @param string $plugin_basename - the results of plugin_basename( __FILE__ ) for the plugin's main file
+	 * @return    void
+	 */
+	function espresso_deactivate_plugin($plugin_basename = '')
+	{
+		if ( ! function_exists('deactivate_plugins')) {
+			require_once(ABSPATH . 'wp-admin/includes/plugin.php');
+		}
+		unset($_GET['activate'], $_REQUEST['activate']);
+		deactivate_plugins($plugin_basename);
+	}
 }
\ No newline at end of file

core/services/Benchmark.php

Indentation +303 added lines, -303 removed lines

@@ -17,309 +17,309 @@
 class Benchmark
 {
 
-    /**
-     * array containing the start time for the timers
-     */
-    private static $start_times;
-
-    /**
-     * array containing all the timer'd times, which can be outputted via show_times()
-     */
-    private static $times = array();
-
-    /**
-     * @var array
-     */
-    protected static $memory_usage = array();
-
-
-
-    /**
-     * whether to benchmark code or not
-     */
-    public static function doNotRun()
-    {
-        return ! WP_DEBUG || (defined('DOING_AJAX') && DOING_AJAX);
-    }
-
-
-
-    /**
-     * resetTimes
-     */
-    public static function resetTimes()
-    {
-        Benchmark::$times = array();
-    }
-
-
-
-    /**
-     * Add Benchmark::startTimer() before a block of code you want to measure the performance of
-     *
-     * @param null $timer_name
-     */
-    public static function startTimer($timer_name = null)
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $timer_name = $timer_name !== '' ? $timer_name : get_called_class();
-        Benchmark::$start_times[$timer_name] = microtime(true);
-    }
-
-
-
-    /**
-     * Add Benchmark::stopTimer() after a block of code you want to measure the performance of
-     *
-     * @param string $timer_name
-     */
-    public static function stopTimer($timer_name = '')
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $timer_name = $timer_name !== '' ? $timer_name : get_called_class();
-        if (isset(Benchmark::$start_times[$timer_name])) {
-            $start_time = Benchmark::$start_times[$timer_name];
-            unset(Benchmark::$start_times[$timer_name]);
-        } else {
-            $start_time = array_pop(Benchmark::$start_times);
-        }
-        Benchmark::$times[$timer_name] = number_format(microtime(true) - $start_time, 8);
-    }
-
-
-
-    /**
-     * Measure the memory usage by PHP so far.
-     *
-     * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
-     * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
-     * @param bool    $formatted
-     * @return void
-     */
-    public static function measureMemory($label = 'memory usage', $output_now = false, $formatted = true)
-    {
-        if (Benchmark::doNotRun()) {
-            return;
-        }
-        $memory_used = Benchmark::convert(memory_get_usage(true));
-        Benchmark::$memory_usage[$label] = $memory_used;
-        if ($output_now) {
-            echo $formatted
-                ? "<br>{$label} : {$memory_used}"
-                : "\n {$label} : {$memory_used}";
-        }
-    }
-
-
-
-    /**
-     * will display the benchmarking results at shutdown
-     *
-     * @param bool $formatted
-     * @return void
-     */
-    public static function displayResultsAtShutdown($formatted = true)
-    {
-        add_action(
-            'shutdown',
-            function () use ($formatted) {
-                Benchmark::displayResults(true, $formatted);
-            }
-        );
-    }
-
-
-
-    /**
-     * will display the benchmarking results at shutdown
-     *
-     * @param string $filepath
-     * @param bool   $formatted
-     * @param bool   $append
-     * @return void
-     */
-    public static function writeResultsAtShutdown($filepath = '', $formatted = true, $append = true)
-    {
-        add_action(
-            'shutdown',
-            function () use ($filepath, $formatted, $append) {
-                Benchmark::writeResultsToFile($filepath, $formatted, $append);
-            }
-        );
-    }
-
-
-
-    /**
-     * @param bool $formatted
-     * @return string
-     */
-    private static function generateResults($formatted = true)
-    {
-        if (Benchmark::doNotRun()) {
-            return '';
-        }
-        $output = '';
-        if (! empty(Benchmark::$times)) {
-            $total = 0;
-            $output .= $formatted
-                ? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
-                : '';
-            foreach (Benchmark::$times as $timer_name => $total_time) {
-                $output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
-                $output .= $formatted ? '<br />'  : "\n";
-                $total += $total_time;
-            }
-            if($formatted) {
-                $output .= '<br />';
-                $output .= '<h4>TOTAL TIME</h4>';
-                $output .= Benchmark::formatTime('', $total, $formatted);
-                $output .= '<span style="color:#999999; font-size:.8em;"> milliseconds</span><br />';
-                $output .= '<br />';
-                $output .= '<h5>Performance scale (from best to worse)</h5>';
-                $output .= '<span style="color:mediumpurple">Like wow! How about a Scooby snack?</span><br />';
-                $output .= '<span style="color:deepskyblue">Like...no way man!</span><br />';
-                $output .= '<span style="color:limegreen">Like...groovy!</span><br />';
-                $output .= '<span style="color:gold">Ruh Oh</span><br />';
-                $output .= '<span style="color:darkorange">Zoinks!</span><br />';
-                $output .= '<span style="color:red">Like...HEEELLLP</span><br />';
-            }
-        }
-        if (! empty(Benchmark::$memory_usage)) {
-            $output .= $formatted
-                ? '<h5>Memory</h5>'
-                : "\nMemory";
-            foreach (Benchmark::$memory_usage as $label => $memory_usage) {
-                $output .= $formatted
-                    ? '<br />'
-                    : "\n";
-                $output .= "{$memory_usage} : {$label}";
-            }
-        }
-        if (empty($output)) {
-            return '';
-        }
-        $output = $formatted
-            ? '<div style="border:1px solid #dddddd; background-color:#ffffff;'
-              . (is_admin()
-                ? ' margin:2em 2em 2em 180px;'
-                : ' margin:2em;')
-              . ' padding:2em;">'
-              . '<h4>BENCHMARKING</h4>'
-              . $output
-              . '</div>'
-            : $output;
-        return $output;
-    }
-
-
-
-    /**
-     * @param bool $echo
-     * @param bool $formatted
-     * @return string
-     */
-    public static function displayResults($echo = true, $formatted = true)
-    {
-        $results = Benchmark::generateResults($formatted);
-        if ($echo) {
-            echo $results;
-            $results = '';
-        }
-        return $results;
-    }
-
-
-
-    /**
-     * @param string $filepath
-     * @param bool   $formatted
-     * @param bool   $append
-     */
-    public static function writeResultsToFile($filepath = '', $formatted = true, $append = true)
-    {
-        $filepath = ! empty($filepath) && is_readable(dirname($filepath))
-            ? $filepath
-            : '';
-        if( empty($filepath)) {
-            $filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
-        }
-        file_put_contents(
-            $filepath,
-            "\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
-            $append ? FILE_APPEND | LOCK_EX : LOCK_EX
-        );
-    }
-
-
-
-    /**
-     * Converts a measure of memory bytes into the most logical units (eg kb, mb, etc)
-     *
-     * @param int $size
-     * @return string
-     */
-    public static function convert($size)
-    {
-        $unit = array('b', 'kb', 'mb', 'gb', 'tb', 'pb');
-        return round(
-            $size / pow(1024, $i = floor(log($size, 1024))),
-            2
-        ) . ' ' . $unit[absint($i)];
-    }
-
-
-
-    /**
-     * @param string $timer_name
-     * @param float  $total_time
-     * @param bool   $formatted
-     * @return string
-     */
-    public static function formatTime($timer_name, $total_time, $formatted = true)
-    {
-        $total_time *= 1000;
-        switch ($total_time) {
-            case $total_time > 12500 :
-                $color = 'red';
-                $bold = 'bold';
-                break;
-            case $total_time > 2500 :
-                $color = 'darkorange';
-                $bold = 'bold';
-                break;
-            case $total_time > 500 :
-                $color = 'gold';
-                $bold = 'bold';
-                break;
-            case $total_time > 100 :
-                $color = 'limegreen';
-                $bold = 'normal';
-                break;
-            case $total_time > 20 :
-                $color = 'deepskyblue';
-                $bold = 'normal';
-                break;
-            default :
-                $color = 'mediumpurple';
-                $bold = 'normal';
-                break;
-        }
-        return $formatted
-            ? '<span style="min-width: 10px; margin:0 1em; color:'
-               . $color
-               . '; font-weight:'
-               . $bold
-               . '; font-size:1.2em;">'
-               . str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT)
-               . '</span> '
-               . $timer_name
-            :  str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT);
-    }
+	/**
+	 * array containing the start time for the timers
+	 */
+	private static $start_times;
+
+	/**
+	 * array containing all the timer'd times, which can be outputted via show_times()
+	 */
+	private static $times = array();
+
+	/**
+	 * @var array
+	 */
+	protected static $memory_usage = array();
+
+
+
+	/**
+	 * whether to benchmark code or not
+	 */
+	public static function doNotRun()
+	{
+		return ! WP_DEBUG || (defined('DOING_AJAX') && DOING_AJAX);
+	}
+
+
+
+	/**
+	 * resetTimes
+	 */
+	public static function resetTimes()
+	{
+		Benchmark::$times = array();
+	}
+
+
+
+	/**
+	 * Add Benchmark::startTimer() before a block of code you want to measure the performance of
+	 *
+	 * @param null $timer_name
+	 */
+	public static function startTimer($timer_name = null)
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$timer_name = $timer_name !== '' ? $timer_name : get_called_class();
+		Benchmark::$start_times[$timer_name] = microtime(true);
+	}
+
+
+
+	/**
+	 * Add Benchmark::stopTimer() after a block of code you want to measure the performance of
+	 *
+	 * @param string $timer_name
+	 */
+	public static function stopTimer($timer_name = '')
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$timer_name = $timer_name !== '' ? $timer_name : get_called_class();
+		if (isset(Benchmark::$start_times[$timer_name])) {
+			$start_time = Benchmark::$start_times[$timer_name];
+			unset(Benchmark::$start_times[$timer_name]);
+		} else {
+			$start_time = array_pop(Benchmark::$start_times);
+		}
+		Benchmark::$times[$timer_name] = number_format(microtime(true) - $start_time, 8);
+	}
+
+
+
+	/**
+	 * Measure the memory usage by PHP so far.
+	 *
+	 * @param string  $label      The label to show for this time eg "Start of calling Some_Class::some_function"
+	 * @param boolean $output_now whether to echo now, or wait until EEH_Debug_Tools::show_times() is called
+	 * @param bool    $formatted
+	 * @return void
+	 */
+	public static function measureMemory($label = 'memory usage', $output_now = false, $formatted = true)
+	{
+		if (Benchmark::doNotRun()) {
+			return;
+		}
+		$memory_used = Benchmark::convert(memory_get_usage(true));
+		Benchmark::$memory_usage[$label] = $memory_used;
+		if ($output_now) {
+			echo $formatted
+				? "<br>{$label} : {$memory_used}"
+				: "\n {$label} : {$memory_used}";
+		}
+	}
+
+
+
+	/**
+	 * will display the benchmarking results at shutdown
+	 *
+	 * @param bool $formatted
+	 * @return void
+	 */
+	public static function displayResultsAtShutdown($formatted = true)
+	{
+		add_action(
+			'shutdown',
+			function () use ($formatted) {
+				Benchmark::displayResults(true, $formatted);
+			}
+		);
+	}
+
+
+
+	/**
+	 * will display the benchmarking results at shutdown
+	 *
+	 * @param string $filepath
+	 * @param bool   $formatted
+	 * @param bool   $append
+	 * @return void
+	 */
+	public static function writeResultsAtShutdown($filepath = '', $formatted = true, $append = true)
+	{
+		add_action(
+			'shutdown',
+			function () use ($filepath, $formatted, $append) {
+				Benchmark::writeResultsToFile($filepath, $formatted, $append);
+			}
+		);
+	}
+
+
+
+	/**
+	 * @param bool $formatted
+	 * @return string
+	 */
+	private static function generateResults($formatted = true)
+	{
+		if (Benchmark::doNotRun()) {
+			return '';
+		}
+		$output = '';
+		if (! empty(Benchmark::$times)) {
+			$total = 0;
+			$output .= $formatted
+				? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
+				: '';
+			foreach (Benchmark::$times as $timer_name => $total_time) {
+				$output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
+				$output .= $formatted ? '<br />'  : "\n";
+				$total += $total_time;
+			}
+			if($formatted) {
+				$output .= '<br />';
+				$output .= '<h4>TOTAL TIME</h4>';
+				$output .= Benchmark::formatTime('', $total, $formatted);
+				$output .= '<span style="color:#999999; font-size:.8em;"> milliseconds</span><br />';
+				$output .= '<br />';
+				$output .= '<h5>Performance scale (from best to worse)</h5>';
+				$output .= '<span style="color:mediumpurple">Like wow! How about a Scooby snack?</span><br />';
+				$output .= '<span style="color:deepskyblue">Like...no way man!</span><br />';
+				$output .= '<span style="color:limegreen">Like...groovy!</span><br />';
+				$output .= '<span style="color:gold">Ruh Oh</span><br />';
+				$output .= '<span style="color:darkorange">Zoinks!</span><br />';
+				$output .= '<span style="color:red">Like...HEEELLLP</span><br />';
+			}
+		}
+		if (! empty(Benchmark::$memory_usage)) {
+			$output .= $formatted
+				? '<h5>Memory</h5>'
+				: "\nMemory";
+			foreach (Benchmark::$memory_usage as $label => $memory_usage) {
+				$output .= $formatted
+					? '<br />'
+					: "\n";
+				$output .= "{$memory_usage} : {$label}";
+			}
+		}
+		if (empty($output)) {
+			return '';
+		}
+		$output = $formatted
+			? '<div style="border:1px solid #dddddd; background-color:#ffffff;'
+			  . (is_admin()
+				? ' margin:2em 2em 2em 180px;'
+				: ' margin:2em;')
+			  . ' padding:2em;">'
+			  . '<h4>BENCHMARKING</h4>'
+			  . $output
+			  . '</div>'
+			: $output;
+		return $output;
+	}
+
+
+
+	/**
+	 * @param bool $echo
+	 * @param bool $formatted
+	 * @return string
+	 */
+	public static function displayResults($echo = true, $formatted = true)
+	{
+		$results = Benchmark::generateResults($formatted);
+		if ($echo) {
+			echo $results;
+			$results = '';
+		}
+		return $results;
+	}
+
+
+
+	/**
+	 * @param string $filepath
+	 * @param bool   $formatted
+	 * @param bool   $append
+	 */
+	public static function writeResultsToFile($filepath = '', $formatted = true, $append = true)
+	{
+		$filepath = ! empty($filepath) && is_readable(dirname($filepath))
+			? $filepath
+			: '';
+		if( empty($filepath)) {
+			$filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
+		}
+		file_put_contents(
+			$filepath,
+			"\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
+			$append ? FILE_APPEND | LOCK_EX : LOCK_EX
+		);
+	}
+
+
+
+	/**
+	 * Converts a measure of memory bytes into the most logical units (eg kb, mb, etc)
+	 *
+	 * @param int $size
+	 * @return string
+	 */
+	public static function convert($size)
+	{
+		$unit = array('b', 'kb', 'mb', 'gb', 'tb', 'pb');
+		return round(
+			$size / pow(1024, $i = floor(log($size, 1024))),
+			2
+		) . ' ' . $unit[absint($i)];
+	}
+
+
+
+	/**
+	 * @param string $timer_name
+	 * @param float  $total_time
+	 * @param bool   $formatted
+	 * @return string
+	 */
+	public static function formatTime($timer_name, $total_time, $formatted = true)
+	{
+		$total_time *= 1000;
+		switch ($total_time) {
+			case $total_time > 12500 :
+				$color = 'red';
+				$bold = 'bold';
+				break;
+			case $total_time > 2500 :
+				$color = 'darkorange';
+				$bold = 'bold';
+				break;
+			case $total_time > 500 :
+				$color = 'gold';
+				$bold = 'bold';
+				break;
+			case $total_time > 100 :
+				$color = 'limegreen';
+				$bold = 'normal';
+				break;
+			case $total_time > 20 :
+				$color = 'deepskyblue';
+				$bold = 'normal';
+				break;
+			default :
+				$color = 'mediumpurple';
+				$bold = 'normal';
+				break;
+		}
+		return $formatted
+			? '<span style="min-width: 10px; margin:0 1em; color:'
+			   . $color
+			   . '; font-weight:'
+			   . $bold
+			   . '; font-size:1.2em;">'
+			   . str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT)
+			   . '</span> '
+			   . $timer_name
+			:  str_pad(number_format($total_time, 3), 9, '0', STR_PAD_LEFT);
+	}
 
 
 

Spacing +10 added lines, -10 removed lines

@@ -126,7 +126,7 @@ 
     {
         add_action(
             'shutdown',
-            function () use ($formatted) {
+            function() use ($formatted) {
                 Benchmark::displayResults(true, $formatted);
             }
         );
@@ -146,7 +146,7 @@ 
     {
         add_action(
             'shutdown',
-            function () use ($filepath, $formatted, $append) {
+            function() use ($filepath, $formatted, $append) {
                 Benchmark::writeResultsToFile($filepath, $formatted, $append);
             }
         );
@@ -164,17 +164,17 @@ 
             return '';
         }
         $output = '';
-        if (! empty(Benchmark::$times)) {
+        if ( ! empty(Benchmark::$times)) {
             $total = 0;
             $output .= $formatted
                 ? '<span style="color:#999999; font-size:.8em;">( time in milliseconds )</span><br />'
                 : '';
             foreach (Benchmark::$times as $timer_name => $total_time) {
                 $output .= Benchmark::formatTime($timer_name, $total_time, $formatted);
-                $output .= $formatted ? '<br />'  : "\n";
+                $output .= $formatted ? '<br />' : "\n";
                 $total += $total_time;
             }
-            if($formatted) {
+            if ($formatted) {
                 $output .= '<br />';
                 $output .= '<h4>TOTAL TIME</h4>';
                 $output .= Benchmark::formatTime('', $total, $formatted);
@@ -189,7 +189,7 @@ 
                 $output .= '<span style="color:red">Like...HEEELLLP</span><br />';
             }
         }
-        if (! empty(Benchmark::$memory_usage)) {
+        if ( ! empty(Benchmark::$memory_usage)) {
             $output .= $formatted
                 ? '<h5>Memory</h5>'
                 : "\nMemory";
@@ -245,12 +245,12 @@ 
         $filepath = ! empty($filepath) && is_readable(dirname($filepath))
             ? $filepath
             : '';
-        if( empty($filepath)) {
-            $filepath = EVENT_ESPRESSO_UPLOAD_DIR . 'logs/benchmarking-' . date('Y-m-d') . '.html';
+        if (empty($filepath)) {
+            $filepath = EVENT_ESPRESSO_UPLOAD_DIR.'logs/benchmarking-'.date('Y-m-d').'.html';
         }
         file_put_contents(
             $filepath,
-            "\n" . date('Y-m-d H:i:s') . Benchmark::generateResults($formatted),
+            "\n".date('Y-m-d H:i:s').Benchmark::generateResults($formatted),
             $append ? FILE_APPEND | LOCK_EX : LOCK_EX
         );
     }
@@ -269,7 +269,7 @@ 
         return round(
             $size / pow(1024, $i = floor(log($size, 1024))),
             2
-        ) . ' ' . $unit[absint($i)];
+        ).' '.$unit[absint($i)];
     }