eventespresso / event-espresso-core

core/services/formatters/FormatterBase.php

Indentation +22 added lines, -22 removed lines

@@ -18,27 +18,27 @@
 abstract class FormatterBase implements FormatterInterface
 {
 
-    /**
-     * Recursively applies the formatting to all VALUES in this multi-dimensional array
-     *
-     * @param array $input
-     * @return array
-     * @throws InvalidDataTypeException if $input is not an array
-     */
-    public function formatArray($input)
-    {
-        if (! is_array($input)) {
-            throw new InvalidDataTypeException('input', $input, 'array');
-        }
-        //we can use $this inside the closure in PHP 5.3, so pass in a variable pointing to this instead
-        $formatter = $this;
-        array_walk_recursive(
-            $input,
-            function (&$value, $key) use ($formatter) {
-                $value = $formatter->format($value);
-            }
-        );
-        return $input;
-    }}
+	/**
+	 * Recursively applies the formatting to all VALUES in this multi-dimensional array
+	 *
+	 * @param array $input
+	 * @return array
+	 * @throws InvalidDataTypeException if $input is not an array
+	 */
+	public function formatArray($input)
+	{
+		if (! is_array($input)) {
+			throw new InvalidDataTypeException('input', $input, 'array');
+		}
+		//we can use $this inside the closure in PHP 5.3, so pass in a variable pointing to this instead
+		$formatter = $this;
+		array_walk_recursive(
+			$input,
+			function (&$value, $key) use ($formatter) {
+				$value = $formatter->format($value);
+			}
+		);
+		return $input;
+	}}
 // End of file FormatterBase.php
 // Location: core\services\formatters/FormatterBase.php
\ No newline at end of file

Spacing +2 added lines, -2 removed lines

@@ -27,14 +27,14 @@
      */
     public function formatArray($input)
     {
-        if (! is_array($input)) {
+        if ( ! is_array($input)) {
             throw new InvalidDataTypeException('input', $input, 'array');
         }
         //we can use $this inside the closure in PHP 5.3, so pass in a variable pointing to this instead
         $formatter = $this;
         array_walk_recursive(
             $input,
-            function (&$value, $key) use ($formatter) {
+            function(&$value, $key) use ($formatter) {
                 $value = $formatter->format($value);
             }
         );

modules/core_rest_api/EED_Core_Rest_Api.module.php

Indentation +791 added lines, -791 removed lines

@@ -18,807 +18,807 @@
 class EED_Core_Rest_Api extends \EED_Module
 {
 
-    const ee_api_namespace           = 'ee/v';
+	const ee_api_namespace           = 'ee/v';
 
-    const ee_api_namespace_for_regex = 'ee\/v([^/]*)\/';
+	const ee_api_namespace_for_regex = 'ee\/v([^/]*)\/';
 
-    const saved_routes_option_names  = 'ee_core_routes';
+	const saved_routes_option_names  = 'ee_core_routes';
 
-    /**
-     * string used in _links response bodies to make them globally unique.
-     *
-     * @see http://v2.wp-api.org/extending/linking/
-     */
-    const ee_api_link_namespace = 'https://api.eventespresso.com/';
+	/**
+	 * string used in _links response bodies to make them globally unique.
+	 *
+	 * @see http://v2.wp-api.org/extending/linking/
+	 */
+	const ee_api_link_namespace = 'https://api.eventespresso.com/';
 
-    /**
-     * @var Calculated_Model_Fields
-     */
-    protected static $_field_calculator = null;
+	/**
+	 * @var Calculated_Model_Fields
+	 */
+	protected static $_field_calculator = null;
 
 
 
-    /**
-     * @return EED_Core_Rest_Api
-     */
-    public static function instance()
-    {
-        self::$_field_calculator = new Calculated_Model_Fields();
-        return parent::get_instance(__CLASS__);
-    }
+	/**
+	 * @return EED_Core_Rest_Api
+	 */
+	public static function instance()
+	{
+		self::$_field_calculator = new Calculated_Model_Fields();
+		return parent::get_instance(__CLASS__);
+	}
 
 
 
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        self::set_hooks_both();
-    }
-
-
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks_admin()
-    {
-        self::set_hooks_both();
-    }
-
-
-
-    public static function set_hooks_both()
-    {
-        add_action('rest_api_init', array('EED_Core_Rest_Api', 'register_routes'), 10);
-        add_action('rest_api_init', array('EED_Core_Rest_Api', 'set_hooks_rest_api'), 5);
-        add_filter('rest_route_data', array('EED_Core_Rest_Api', 'hide_old_endpoints'), 10, 2);
-        add_filter('rest_index',
-            array('EventEspresso\core\libraries\rest_api\controllers\model\Meta', 'filter_ee_metadata_into_index'));
-        EED_Core_Rest_Api::invalidate_cached_route_data_on_version_change();
-    }
-
-
-
-    /**
-     * sets up hooks which only need to be included as part of REST API requests;
-     * other requests like to the frontend or admin etc don't need them
-     */
-    public static function set_hooks_rest_api()
-    {
-        //set hooks which account for changes made to the API
-        EED_Core_Rest_Api::_set_hooks_for_changes();
-    }
-
-
-
-    /**
-     * public wrapper of _set_hooks_for_changes.
-     * Loads all the hooks which make requests to old versions of the API
-     * appear the same as they always did
-     */
-    public static function set_hooks_for_changes()
-    {
-        self::_set_hooks_for_changes();
-    }
-
-
-
-
-
-
-
-    /**
-     * Loads all the hooks which make requests to old versions of the API
-     * appear the same as they always did
-     */
-    protected static function _set_hooks_for_changes()
-    {
-        $folder_contents = EEH_File::get_contents_of_folders(array(EE_LIBRARIES . 'rest_api' . DS . 'changes'), false);
-        foreach ($folder_contents as $classname_in_namespace => $filepath) {
-            //ignore the base parent class
-            if ($classname_in_namespace === 'Changes_In_Base') {
-                continue;
-            }
-            $full_classname = 'EventEspresso\core\libraries\rest_api\changes\\' . $classname_in_namespace;
-            if (class_exists($full_classname)) {
-                $instance_of_class = new $full_classname;
-                if ($instance_of_class instanceof Changes_In_Base) {
-                    $instance_of_class->set_hooks();
-                }
-            }
-        }
-    }
-
-
-
-    /**
-     * Filters the WP routes to add our EE-related ones. This takes a bit of time
-     * so we actually prefer to only do it when an EE plugin is activated or upgraded
-     */
-    public static function register_routes()
-    {
-        foreach (EED_Core_Rest_Api::get_ee_route_data() as $namespace => $relative_urls) {
-            foreach ($relative_urls as $endpoint => $routes) {
-                foreach ($routes as $route) {
-                    $route_args = array(
-                        array(
-                            'callback' => $route['callback'],
-                            'methods'  => $route['methods'],
-                            'args'     => isset($route['args']) ? $route['args'] : array(),
-                        )
-                    );
-                    if (isset($route['schema_callback'])) {
-                        $model_name = isset($route['schema_callback'][0])
-                            ? $route['schema_callback'][0]
-                            : '';
-                        $version = isset( $route['schema_callback'][1])
-                            ? $route['schema_callback'][1]
-                            : '';
-                        if (! empty($model_name) && ! empty($version)) {
-                            $route_args['schema'] = function () use ($model_name, $version) {
-                                return ModelRead::handle_schema_request(
-                                    $model_name,
-                                    $version
-                                );
-                            };
-                        }
-                    }
-                    register_rest_route(
-                        $namespace,
-                        $endpoint,
-                        $route_args
-                    );
-                }
-            }
-        }
-    }
-
-
-
-    /**
-     * Checks if there was a version change or something that merits invalidating the cached
-     * route data. If so, invalidates the cached route data so that it gets refreshed
-     * next time the WP API is used
-     */
-    public static function invalidate_cached_route_data_on_version_change()
-    {
-        if (EE_System::instance()->detect_req_type() != EE_System::req_type_normal) {
-            EED_Core_Rest_Api::invalidate_cached_route_data();
-        }
-        foreach (EE_Registry::instance()->addons as $addon) {
-            if ($addon instanceof EE_Addon && $addon->detect_req_type() != EE_System::req_type_normal) {
-                EED_Core_Rest_Api::invalidate_cached_route_data();
-            }
-        }
-    }
-
-
-
-    /**
-     * Removes the cached route data so it will get refreshed next time the WP API is used
-     */
-    public static function invalidate_cached_route_data()
-    {
-        //delete the saved EE REST API routes
-        foreach (EED_Core_Rest_Api::versions_served() as $version => $hidden) {
-            delete_option(EED_Core_Rest_Api::saved_routes_option_names . $version);
-        }
-    }
-
-
-
-    /**
-     * Gets the EE route data
-     *
-     * @return array top-level key is the namespace, next-level key is the route and its value is array{
-     * @type string|array $callback
-     * @type string       $methods
-     * @type boolean      $hidden_endpoint
-     * }
-     */
-    public static function get_ee_route_data()
-    {
-        $ee_routes = array();
-        foreach (self::versions_served() as $version => $hidden_endpoints) {
-            $ee_routes[self::ee_api_namespace . $version] = self::_get_ee_route_data_for_version($version,
-                $hidden_endpoints);
-        }
-        return $ee_routes;
-    }
-
-
-
-    /**
-     * Gets the EE route data from the wp options if it exists already,
-     * otherwise re-generates it and saves it to the option
-     *
-     * @param string  $version
-     * @param boolean $hidden_endpoints
-     * @return array
-     */
-    protected static function _get_ee_route_data_for_version($version, $hidden_endpoints = false)
-    {
-        $ee_routes = get_option(self::saved_routes_option_names . $version, null);
-        if ( ! $ee_routes || (defined('EE_REST_API_DEBUG_MODE') && EE_REST_API_DEBUG_MODE)) {
-            $ee_routes = self::_save_ee_route_data_for_version($version, $hidden_endpoints);
-        }
-        return $ee_routes;
-    }
-
-
-
-    /**
-     * Saves the EE REST API route data to a wp option and returns it
-     *
-     * @param string  $version
-     * @param boolean $hidden_endpoints
-     * @return mixed|null|void
-     */
-    protected static function _save_ee_route_data_for_version($version, $hidden_endpoints = false)
-    {
-        $instance = self::instance();
-        $routes = apply_filters(
-            'EED_Core_Rest_Api__save_ee_route_data_for_version__routes',
-            array_replace_recursive(
-                $instance->_get_config_route_data_for_version($version, $hidden_endpoints),
-                $instance->_get_meta_route_data_for_version($version, $hidden_endpoints),
-                $instance->_get_model_route_data_for_version($version, $hidden_endpoints),
-                $instance->_get_rpc_route_data_for_version($version, $hidden_endpoints)
-            )
-        );
-        $option_name = self::saved_routes_option_names . $version;
-        if (get_option($option_name)) {
-            update_option($option_name, $routes, true);
-        } else {
-            add_option($option_name, $routes, null, 'no');
-        }
-        return $routes;
-    }
-
-
-
-    /**
-     * Calculates all the EE routes and saves it to a wordpress option so we don't
-     * need to calculate it on every request
-     *
-     * @deprecated since version 4.9.1
-     * @return void
-     */
-    public static function save_ee_routes()
-    {
-        if (EE_Maintenance_Mode::instance()->models_can_query()) {
-            $instance = self::instance();
-            $routes = apply_filters(
-                'EED_Core_Rest_Api__save_ee_routes__routes',
-                array_replace_recursive(
-                    $instance->_register_config_routes(),
-                    $instance->_register_meta_routes(),
-                    $instance->_register_model_routes(),
-                    $instance->_register_rpc_routes()
-                )
-            );
-            update_option(self::saved_routes_option_names, $routes, true);
-        }
-    }
-
-
-
-    /**
-     * Gets all the route information relating to EE models
-     *
-     * @return array @see get_ee_route_data
-     * @deprecated since version 4.9.1
-     */
-    protected function _register_model_routes()
-    {
-        $model_routes = array();
-        foreach (self::versions_served() as $version => $hidden_endpoint) {
-            $model_routes[EED_Core_Rest_Api::ee_api_namespace
-                          . $version] = $this->_get_config_route_data_for_version($version, $hidden_endpoint);
-        }
-        return $model_routes;
-    }
-
-
-
-    /**
-     * Gets the route data for EE models in the specified version
-     *
-     * @param string  $version
-     * @param boolean $hidden_endpoint
-     * @return array
-     */
-    protected function _get_model_route_data_for_version($version, $hidden_endpoint = false)
-    {
-        $model_version_info = new Model_Version_Info($version);
-        $models_to_register = apply_filters(
-            'FHEE__EED_Core_REST_API___register_model_routes',
-            $model_version_info->models_for_requested_version()
-        );
-        //let's not bother having endpoints for extra metas
-        unset($models_to_register['Extra_Meta']);
-        unset($models_to_register['Extra_Join']);
-        $model_routes = array();
-        foreach ($models_to_register as $model_name => $model_classname) {
-            $model = \EE_Registry::instance()->load_model($model_name);
-
-            //if this isn't a valid model then let's skip iterate to the next item in the loop.
-            if (! $model instanceof EEM_Base) {
-                continue;
-            }
-
-            //yes we could just register one route for ALL models, but then they wouldn't show up in the index
-            $plural_model_route = EEH_Inflector::pluralize_and_lower($model_name);
-            $singular_model_route = $plural_model_route . '/(?P<id>\d+)';
-            $model_routes[$plural_model_route] = array(
-                array(
-                    'callback'        => array(
-                        'EventEspresso\core\libraries\rest_api\controllers\model\Read',
-                        'handle_request_get_all',
-                    ),
-                    'methods'         => WP_REST_Server::READABLE,
-                    'hidden_endpoint' => $hidden_endpoint,
-                    'args'            => $this->_get_read_query_params($model, $version),
-                    '_links'          => array(
-                        'self' => rest_url(EED_Core_Rest_Api::ee_api_namespace . $version . $singular_model_route),
-                    ),
-                    'schema_callback' => array($model_name, $version)
-                ),
-                //						array(
-                //							'callback' => array(
-                //								'EventEspresso\core\libraries\rest_api\controllers\model\Write',
-                //								'handle_request_create_one' ),
-                //							'methods' => WP_REST_Server::CREATABLE,
-                //							'hidden_endpoint' => $hidden_endpoint
-                //						)
-            );
-            $model_routes[$singular_model_route] = array(
-                array(
-                    'callback'        => array(
-                        'EventEspresso\core\libraries\rest_api\controllers\model\Read',
-                        'handle_request_get_one',
-                    ),
-                    'methods'         => WP_REST_Server::READABLE,
-                    'hidden_endpoint' => $hidden_endpoint,
-                    'args'            => $this->_get_response_selection_query_params($model, $version),
-                ),
-                //						array(
-                //							'callback' => array(
-                //								'EventEspresso\core\libraries\rest_api\controllers\model\Write',
-                //								'handle_request_edit_one' ),
-                //							'methods' => WP_REST_Server::EDITABLE,
-                //							'hidden_endpoint' => $hidden_endpoint
-                //							),
-            );
-            //@todo: also handle  DELETE for a single item
-            foreach ($model_version_info->relation_settings($model) as $relation_name => $relation_obj) {
-                $related_model_name_endpoint_part = ModelRead::get_related_entity_name(
-                    $relation_name,
-                    $relation_obj
-                );
-                $model_routes[$singular_model_route . '/' . $related_model_name_endpoint_part] = array(
-                    array(
-                        'callback'        => array(
-                            'EventEspresso\core\libraries\rest_api\controllers\model\Read',
-                            'handle_request_get_related',
-                        ),
-                        'methods'         => WP_REST_Server::READABLE,
-                        'hidden_endpoint' => $hidden_endpoint,
-                        'args'            => $this->_get_read_query_params($relation_obj->get_other_model(), $version),
-                    ),
-                    //							array(
-                    //								'callback' => array(
-                    //									'EventEspresso\core\libraries\rest_api\controllers\model\Write',
-                    //									'handle_request_create_or_update_related' ),
-                    //								'methods' => WP_REST_Server::EDITABLE,
-                    //								'hidden_endpoint' => $hidden_endpoint
-                    //							)
-                );
-                //@todo: handle delete related and possibly remove relation (not sure hwo to distinguish)
-            }
-        }
-        return $model_routes;
-    }
-
-
-
-    /**
-     * Adds all the RPC-style routes (remote procedure call-like routes, ie
-     * routes that don't conform to the traditional REST CRUD-style).
-     *
-     * @deprecated since 4.9.1
-     */
-    protected function _register_rpc_routes()
-    {
-        $routes = array();
-        foreach (self::versions_served() as $version => $hidden_endpoint) {
-            $routes[self::ee_api_namespace . $version] = $this->_get_rpc_route_data_for_version($version,
-                $hidden_endpoint);
-        }
-        return $routes;
-    }
-
-
-
-    /**
-     * @param string  $version
-     * @param boolean $hidden_endpoint
-     * @return array
-     */
-    protected function _get_rpc_route_data_for_version($version, $hidden_endpoint = false)
-    {
-        $this_versions_routes = array();
-        //checkin endpoint
-        $this_versions_routes['registrations/(?P<REG_ID>\d+)/toggle_checkin_for_datetime/(?P<DTT_ID>\d+)'] = array(
-            array(
-                'callback'        => array(
-                    'EventEspresso\core\libraries\rest_api\controllers\rpc\Checkin',
-                    'handle_request_toggle_checkin',
-                ),
-                'methods'         => WP_REST_Server::CREATABLE,
-                'hidden_endpoint' => $hidden_endpoint,
-                'args'            => array(
-                    'force' => array(
-                        'required'    => false,
-                        'default'     => false,
-                        'description' => __('Whether to force toggle checkin, or to verify the registration status and allowed ticket uses',
-                            'event_espresso'),
-                    ),
-                ),
-            ),
-        );
-        return apply_filters(
-            'FHEE__EED_Core_Rest_Api___register_rpc_routes__this_versions_routes',
-            $this_versions_routes,
-            $version,
-            $hidden_endpoint
-        );
-    }
-
-
-
-    /**
-     * Gets the query params that can be used when request one or many
-     *
-     * @param EEM_Base $model
-     * @param string   $version
-     * @return array
-     */
-    protected function _get_response_selection_query_params(\EEM_Base $model, $version)
-    {
-        return apply_filters(
-            'FHEE__EED_Core_Rest_Api___get_response_selection_query_params',
-            array(
-                'include'   => array(
-                    'required' => false,
-                    'default'  => '*',
-                ),
-                'calculate' => array(
-                    'required' => false,
-                    'default'  => '',
-                    'enum'     => self::$_field_calculator->retrieve_calculated_fields_for_model($model),
-                ),
-            ),
-            $model,
-            $version
-        );
-    }
-
-
-
-    /**
-     * Gets info about reading query params that are acceptable
-     *
-     * @param \EEM_Base $model eg 'Event' or 'Venue'
-     * @param  string   $version
-     * @return array    describing the args acceptable when querying this model
-     * @throws \EE_Error
-     */
-    protected function _get_read_query_params(\EEM_Base $model, $version)
-    {
-        $default_orderby = array();
-        foreach ($model->get_combined_primary_key_fields() as $key_field) {
-            $default_orderby[$key_field->get_name()] = 'ASC';
-        }
-        return array_merge(
-            $this->_get_response_selection_query_params($model, $version),
-            array(
-                'where'    => array(
-                    'required' => false,
-                    'default'  => array(),
-                ),
-                'limit'    => array(
-                    'required' => false,
-                    'default'  => EED_Core_Rest_Api::get_default_query_limit(),
-                ),
-                'order_by' => array(
-                    'required' => false,
-                    'default'  => $default_orderby,
-                ),
-                'group_by' => array(
-                    'required' => false,
-                    'default'  => null,
-                ),
-                'having'   => array(
-                    'required' => false,
-                    'default'  => null,
-                ),
-                'caps'     => array(
-                    'required' => false,
-                    'default'  => EEM_Base::caps_read,
-                ),
-            )
-        );
-    }
-
-
-
-    /**
-     * Gets routes for the config
-     *
-     * @return array @see _register_model_routes
-     * @deprecated since version 4.9.1
-     */
-    protected function _register_config_routes()
-    {
-        $config_routes = array();
-        foreach (self::versions_served() as $version => $hidden_endpoint) {
-            $config_routes[self::ee_api_namespace . $version] = $this->_get_config_route_data_for_version($version,
-                $hidden_endpoint);
-        }
-        return $config_routes;
-    }
-
-
-
-    /**
-     * Gets routes for the config for the specified version
-     *
-     * @param string  $version
-     * @param boolean $hidden_endpoint
-     * @return array
-     */
-    protected function _get_config_route_data_for_version($version, $hidden_endpoint)
-    {
-        return array(
-            'config'    => array(
-                array(
-                    'callback'        => array(
-                        'EventEspresso\core\libraries\rest_api\controllers\config\Read',
-                        'handle_request',
-                    ),
-                    'methods'         => WP_REST_Server::READABLE,
-                    'hidden_endpoint' => $hidden_endpoint,
-                ),
-            ),
-            'site_info' => array(
-                array(
-                    'callback'        => array(
-                        'EventEspresso\core\libraries\rest_api\controllers\config\Read',
-                        'handle_request_site_info',
-                    ),
-                    'methods'         => WP_REST_Server::READABLE,
-                    'hidden_endpoint' => $hidden_endpoint,
-                ),
-            ),
-        );
-    }
-
-
-
-    /**
-     * Gets the meta info routes
-     *
-     * @return array @see _register_model_routes
-     * @deprecated since version 4.9.1
-     */
-    protected function _register_meta_routes()
-    {
-        $meta_routes = array();
-        foreach (self::versions_served() as $version => $hidden_endpoint) {
-            $meta_routes[self::ee_api_namespace . $version] = $this->_get_meta_route_data_for_version($version,
-                $hidden_endpoint);
-        }
-        return $meta_routes;
-    }
-
-
-
-    /**
-     * @param string  $version
-     * @param boolean $hidden_endpoint
-     * @return array
-     */
-    protected function _get_meta_route_data_for_version($version, $hidden_endpoint = false)
-    {
-        return array(
-            'resources' => array(
-                array(
-                    'callback'        => array(
-                        'EventEspresso\core\libraries\rest_api\controllers\model\Meta',
-                        'handle_request_models_meta',
-                    ),
-                    'methods'         => WP_REST_Server::READABLE,
-                    'hidden_endpoint' => $hidden_endpoint,
-                ),
-            ),
-        );
-    }
-
-
-
-    /**
-     * Tries to hide old 4.6 endpoints from the
-     *
-     * @param array $route_data
-     * @return array
-     */
-    public static function hide_old_endpoints($route_data)
-    {
-        //allow API clients to override which endpoints get hidden, in case
-        //they want to discover particular endpoints
-        //also, we don't have access to the request so we have to just grab it from the superglobal
-        $force_show_ee_namespace = ltrim(
-            EEH_Array::is_set($_REQUEST, 'force_show_ee_namespace', ''),
-            '/'
-        );
-        foreach (EED_Core_Rest_Api::get_ee_route_data() as $namespace => $relative_urls) {
-            foreach ($relative_urls as $endpoint => $routes) {
-                foreach ($routes as $route) {
-                    //by default, hide "hidden_endpoint"s, unless the request indicates
-                    //to $force_show_ee_namespace, in which case only show that one
-                    //namespace's endpoints (and hide all others)
-                    if (($route['hidden_endpoint'] && $force_show_ee_namespace === '')
-                        || ($force_show_ee_namespace !== '' && $force_show_ee_namespace !== $namespace)
-                    ) {
-                        $full_route = '/' . ltrim($namespace, '/') . '/' . ltrim($endpoint, '/');
-                        unset($route_data[$full_route]);
-                    }
-                }
-            }
-        }
-        return $route_data;
-    }
-
-
-
-    /**
-     * Returns an array describing which versions of core support serving requests for.
-     * Keys are core versions' major and minor version, and values are the
-     * LOWEST requested version they can serve. Eg, 4.7 can serve requests for 4.6-like
-     * data by just removing a few models and fields from the responses. However, 4.15 might remove
-     * the answers table entirely, in which case it would be very difficult for
-     * it to serve 4.6-style responses.
-     * Versions of core that are missing from this array are unknowns.
-     * previous ver
-     *
-     * @return array
-     */
-    public static function version_compatibilities()
-    {
-        return apply_filters(
-            'FHEE__EED_Core_REST_API__version_compatibilities',
-            array(
-                '4.8.29' => '4.8.29',
-                '4.8.33' => '4.8.29',
-                '4.8.34' => '4.8.29',
-                '4.8.36' => '4.8.29',
-            )
-        );
-    }
-
-
-
-    /**
-     * Gets the latest API version served. Eg if there
-     * are two versions served of the API, 4.8.29 and 4.8.32, and
-     * we are on core version 4.8.34, it will return the string "4.8.32"
-     *
-     * @return string
-     */
-    public static function latest_rest_api_version()
-    {
-        $versions_served = \EED_Core_Rest_Api::versions_served();
-        $versions_served_keys = array_keys($versions_served);
-        return end($versions_served_keys);
-    }
-
-
-
-    /**
-     * Using EED_Core_Rest_Api::version_compatibilities(), determines what version of
-     * EE the API can serve requests for. Eg, if we are on 4.15 of core, and
-     * we can serve requests from 4.12 or later, this will return array( '4.12', '4.13', '4.14', '4.15' ).
-     * We also indicate whether or not this version should be put in the index or not
-     *
-     * @return array keys are API version numbers (just major and minor numbers), and values
-     * are whether or not they should be hidden
-     */
-    public static function versions_served()
-    {
-        $versions_served = array();
-        $possibly_served_versions = EED_Core_Rest_Api::version_compatibilities();
-        $lowest_compatible_version = end($possibly_served_versions);
-        reset($possibly_served_versions);
-        $versions_served_historically = array_keys($possibly_served_versions);
-        $latest_version = end($versions_served_historically);
-        reset($versions_served_historically);
-        //for each version of core we have ever served:
-        foreach ($versions_served_historically as $key_versioned_endpoint) {
-            //if it's not above the current core version, and it's compatible with the current version of core
-            if ($key_versioned_endpoint == $latest_version) {
-                //don't hide the latest version in the index
-                $versions_served[$key_versioned_endpoint] = false;
-            } else if (
-                $key_versioned_endpoint < EED_Core_Rest_Api::core_version()
-                && $key_versioned_endpoint >= $lowest_compatible_version
-            ) {
-                //include, but hide, previous versions which are still supported
-                $versions_served[$key_versioned_endpoint] = true;
-            } elseif (
-            apply_filters(
-                'FHEE__EED_Core_Rest_Api__versions_served__include_incompatible_versions',
-                false,
-                $possibly_served_versions
-            )
-            ) {
-                //if a version is no longer supported, don't include it in index or list of versions served
-                $versions_served[$key_versioned_endpoint] = true;
-            }
-        }
-        return $versions_served;
-    }
-
-
-
-    /**
-     * Gets the major and minor version of EE core's version string
-     *
-     * @return string
-     */
-    public static function core_version()
-    {
-        return apply_filters('FHEE__EED_Core_REST_API__core_version',
-            implode('.', array_slice(explode('.', espresso_version()), 0, 3)));
-    }
-
-
-
-    /**
-     * Gets the default limit that should be used when querying for resources
-     *
-     * @return int
-     */
-    public static function get_default_query_limit()
-    {
-        //we actually don't use a const because we want folks to always use
-        //this method, not the const directly
-        return apply_filters(
-            'FHEE__EED_Core_Rest_Api__get_default_query_limit',
-            50
-        );
-    }
-
-
-
-    /**
-     *    run - initial module setup
-     *
-     * @access    public
-     * @param  WP $WP
-     * @return    void
-     */
-    public function run($WP)
-    {
-    }
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		self::set_hooks_both();
+	}
+
+
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks_admin()
+	{
+		self::set_hooks_both();
+	}
+
+
+
+	public static function set_hooks_both()
+	{
+		add_action('rest_api_init', array('EED_Core_Rest_Api', 'register_routes'), 10);
+		add_action('rest_api_init', array('EED_Core_Rest_Api', 'set_hooks_rest_api'), 5);
+		add_filter('rest_route_data', array('EED_Core_Rest_Api', 'hide_old_endpoints'), 10, 2);
+		add_filter('rest_index',
+			array('EventEspresso\core\libraries\rest_api\controllers\model\Meta', 'filter_ee_metadata_into_index'));
+		EED_Core_Rest_Api::invalidate_cached_route_data_on_version_change();
+	}
+
+
+
+	/**
+	 * sets up hooks which only need to be included as part of REST API requests;
+	 * other requests like to the frontend or admin etc don't need them
+	 */
+	public static function set_hooks_rest_api()
+	{
+		//set hooks which account for changes made to the API
+		EED_Core_Rest_Api::_set_hooks_for_changes();
+	}
+
+
+
+	/**
+	 * public wrapper of _set_hooks_for_changes.
+	 * Loads all the hooks which make requests to old versions of the API
+	 * appear the same as they always did
+	 */
+	public static function set_hooks_for_changes()
+	{
+		self::_set_hooks_for_changes();
+	}
+
+
+
+
+
+
+
+	/**
+	 * Loads all the hooks which make requests to old versions of the API
+	 * appear the same as they always did
+	 */
+	protected static function _set_hooks_for_changes()
+	{
+		$folder_contents = EEH_File::get_contents_of_folders(array(EE_LIBRARIES . 'rest_api' . DS . 'changes'), false);
+		foreach ($folder_contents as $classname_in_namespace => $filepath) {
+			//ignore the base parent class
+			if ($classname_in_namespace === 'Changes_In_Base') {
+				continue;
+			}
+			$full_classname = 'EventEspresso\core\libraries\rest_api\changes\\' . $classname_in_namespace;
+			if (class_exists($full_classname)) {
+				$instance_of_class = new $full_classname;
+				if ($instance_of_class instanceof Changes_In_Base) {
+					$instance_of_class->set_hooks();
+				}
+			}
+		}
+	}
+
+
+
+	/**
+	 * Filters the WP routes to add our EE-related ones. This takes a bit of time
+	 * so we actually prefer to only do it when an EE plugin is activated or upgraded
+	 */
+	public static function register_routes()
+	{
+		foreach (EED_Core_Rest_Api::get_ee_route_data() as $namespace => $relative_urls) {
+			foreach ($relative_urls as $endpoint => $routes) {
+				foreach ($routes as $route) {
+					$route_args = array(
+						array(
+							'callback' => $route['callback'],
+							'methods'  => $route['methods'],
+							'args'     => isset($route['args']) ? $route['args'] : array(),
+						)
+					);
+					if (isset($route['schema_callback'])) {
+						$model_name = isset($route['schema_callback'][0])
+							? $route['schema_callback'][0]
+							: '';
+						$version = isset( $route['schema_callback'][1])
+							? $route['schema_callback'][1]
+							: '';
+						if (! empty($model_name) && ! empty($version)) {
+							$route_args['schema'] = function () use ($model_name, $version) {
+								return ModelRead::handle_schema_request(
+									$model_name,
+									$version
+								);
+							};
+						}
+					}
+					register_rest_route(
+						$namespace,
+						$endpoint,
+						$route_args
+					);
+				}
+			}
+		}
+	}
+
+
+
+	/**
+	 * Checks if there was a version change or something that merits invalidating the cached
+	 * route data. If so, invalidates the cached route data so that it gets refreshed
+	 * next time the WP API is used
+	 */
+	public static function invalidate_cached_route_data_on_version_change()
+	{
+		if (EE_System::instance()->detect_req_type() != EE_System::req_type_normal) {
+			EED_Core_Rest_Api::invalidate_cached_route_data();
+		}
+		foreach (EE_Registry::instance()->addons as $addon) {
+			if ($addon instanceof EE_Addon && $addon->detect_req_type() != EE_System::req_type_normal) {
+				EED_Core_Rest_Api::invalidate_cached_route_data();
+			}
+		}
+	}
+
+
+
+	/**
+	 * Removes the cached route data so it will get refreshed next time the WP API is used
+	 */
+	public static function invalidate_cached_route_data()
+	{
+		//delete the saved EE REST API routes
+		foreach (EED_Core_Rest_Api::versions_served() as $version => $hidden) {
+			delete_option(EED_Core_Rest_Api::saved_routes_option_names . $version);
+		}
+	}
+
+
+
+	/**
+	 * Gets the EE route data
+	 *
+	 * @return array top-level key is the namespace, next-level key is the route and its value is array{
+	 * @type string|array $callback
+	 * @type string       $methods
+	 * @type boolean      $hidden_endpoint
+	 * }
+	 */
+	public static function get_ee_route_data()
+	{
+		$ee_routes = array();
+		foreach (self::versions_served() as $version => $hidden_endpoints) {
+			$ee_routes[self::ee_api_namespace . $version] = self::_get_ee_route_data_for_version($version,
+				$hidden_endpoints);
+		}
+		return $ee_routes;
+	}
+
+
+
+	/**
+	 * Gets the EE route data from the wp options if it exists already,
+	 * otherwise re-generates it and saves it to the option
+	 *
+	 * @param string  $version
+	 * @param boolean $hidden_endpoints
+	 * @return array
+	 */
+	protected static function _get_ee_route_data_for_version($version, $hidden_endpoints = false)
+	{
+		$ee_routes = get_option(self::saved_routes_option_names . $version, null);
+		if ( ! $ee_routes || (defined('EE_REST_API_DEBUG_MODE') && EE_REST_API_DEBUG_MODE)) {
+			$ee_routes = self::_save_ee_route_data_for_version($version, $hidden_endpoints);
+		}
+		return $ee_routes;
+	}
+
+
+
+	/**
+	 * Saves the EE REST API route data to a wp option and returns it
+	 *
+	 * @param string  $version
+	 * @param boolean $hidden_endpoints
+	 * @return mixed|null|void
+	 */
+	protected static function _save_ee_route_data_for_version($version, $hidden_endpoints = false)
+	{
+		$instance = self::instance();
+		$routes = apply_filters(
+			'EED_Core_Rest_Api__save_ee_route_data_for_version__routes',
+			array_replace_recursive(
+				$instance->_get_config_route_data_for_version($version, $hidden_endpoints),
+				$instance->_get_meta_route_data_for_version($version, $hidden_endpoints),
+				$instance->_get_model_route_data_for_version($version, $hidden_endpoints),
+				$instance->_get_rpc_route_data_for_version($version, $hidden_endpoints)
+			)
+		);
+		$option_name = self::saved_routes_option_names . $version;
+		if (get_option($option_name)) {
+			update_option($option_name, $routes, true);
+		} else {
+			add_option($option_name, $routes, null, 'no');
+		}
+		return $routes;
+	}
+
+
+
+	/**
+	 * Calculates all the EE routes and saves it to a wordpress option so we don't
+	 * need to calculate it on every request
+	 *
+	 * @deprecated since version 4.9.1
+	 * @return void
+	 */
+	public static function save_ee_routes()
+	{
+		if (EE_Maintenance_Mode::instance()->models_can_query()) {
+			$instance = self::instance();
+			$routes = apply_filters(
+				'EED_Core_Rest_Api__save_ee_routes__routes',
+				array_replace_recursive(
+					$instance->_register_config_routes(),
+					$instance->_register_meta_routes(),
+					$instance->_register_model_routes(),
+					$instance->_register_rpc_routes()
+				)
+			);
+			update_option(self::saved_routes_option_names, $routes, true);
+		}
+	}
+
+
+
+	/**
+	 * Gets all the route information relating to EE models
+	 *
+	 * @return array @see get_ee_route_data
+	 * @deprecated since version 4.9.1
+	 */
+	protected function _register_model_routes()
+	{
+		$model_routes = array();
+		foreach (self::versions_served() as $version => $hidden_endpoint) {
+			$model_routes[EED_Core_Rest_Api::ee_api_namespace
+						  . $version] = $this->_get_config_route_data_for_version($version, $hidden_endpoint);
+		}
+		return $model_routes;
+	}
+
+
+
+	/**
+	 * Gets the route data for EE models in the specified version
+	 *
+	 * @param string  $version
+	 * @param boolean $hidden_endpoint
+	 * @return array
+	 */
+	protected function _get_model_route_data_for_version($version, $hidden_endpoint = false)
+	{
+		$model_version_info = new Model_Version_Info($version);
+		$models_to_register = apply_filters(
+			'FHEE__EED_Core_REST_API___register_model_routes',
+			$model_version_info->models_for_requested_version()
+		);
+		//let's not bother having endpoints for extra metas
+		unset($models_to_register['Extra_Meta']);
+		unset($models_to_register['Extra_Join']);
+		$model_routes = array();
+		foreach ($models_to_register as $model_name => $model_classname) {
+			$model = \EE_Registry::instance()->load_model($model_name);
+
+			//if this isn't a valid model then let's skip iterate to the next item in the loop.
+			if (! $model instanceof EEM_Base) {
+				continue;
+			}
+
+			//yes we could just register one route for ALL models, but then they wouldn't show up in the index
+			$plural_model_route = EEH_Inflector::pluralize_and_lower($model_name);
+			$singular_model_route = $plural_model_route . '/(?P<id>\d+)';
+			$model_routes[$plural_model_route] = array(
+				array(
+					'callback'        => array(
+						'EventEspresso\core\libraries\rest_api\controllers\model\Read',
+						'handle_request_get_all',
+					),
+					'methods'         => WP_REST_Server::READABLE,
+					'hidden_endpoint' => $hidden_endpoint,
+					'args'            => $this->_get_read_query_params($model, $version),
+					'_links'          => array(
+						'self' => rest_url(EED_Core_Rest_Api::ee_api_namespace . $version . $singular_model_route),
+					),
+					'schema_callback' => array($model_name, $version)
+				),
+				//						array(
+				//							'callback' => array(
+				//								'EventEspresso\core\libraries\rest_api\controllers\model\Write',
+				//								'handle_request_create_one' ),
+				//							'methods' => WP_REST_Server::CREATABLE,
+				//							'hidden_endpoint' => $hidden_endpoint
+				//						)
+			);
+			$model_routes[$singular_model_route] = array(
+				array(
+					'callback'        => array(
+						'EventEspresso\core\libraries\rest_api\controllers\model\Read',
+						'handle_request_get_one',
+					),
+					'methods'         => WP_REST_Server::READABLE,
+					'hidden_endpoint' => $hidden_endpoint,
+					'args'            => $this->_get_response_selection_query_params($model, $version),
+				),
+				//						array(
+				//							'callback' => array(
+				//								'EventEspresso\core\libraries\rest_api\controllers\model\Write',
+				//								'handle_request_edit_one' ),
+				//							'methods' => WP_REST_Server::EDITABLE,
+				//							'hidden_endpoint' => $hidden_endpoint
+				//							),
+			);
+			//@todo: also handle  DELETE for a single item
+			foreach ($model_version_info->relation_settings($model) as $relation_name => $relation_obj) {
+				$related_model_name_endpoint_part = ModelRead::get_related_entity_name(
+					$relation_name,
+					$relation_obj
+				);
+				$model_routes[$singular_model_route . '/' . $related_model_name_endpoint_part] = array(
+					array(
+						'callback'        => array(
+							'EventEspresso\core\libraries\rest_api\controllers\model\Read',
+							'handle_request_get_related',
+						),
+						'methods'         => WP_REST_Server::READABLE,
+						'hidden_endpoint' => $hidden_endpoint,
+						'args'            => $this->_get_read_query_params($relation_obj->get_other_model(), $version),
+					),
+					//							array(
+					//								'callback' => array(
+					//									'EventEspresso\core\libraries\rest_api\controllers\model\Write',
+					//									'handle_request_create_or_update_related' ),
+					//								'methods' => WP_REST_Server::EDITABLE,
+					//								'hidden_endpoint' => $hidden_endpoint
+					//							)
+				);
+				//@todo: handle delete related and possibly remove relation (not sure hwo to distinguish)
+			}
+		}
+		return $model_routes;
+	}
+
+
+
+	/**
+	 * Adds all the RPC-style routes (remote procedure call-like routes, ie
+	 * routes that don't conform to the traditional REST CRUD-style).
+	 *
+	 * @deprecated since 4.9.1
+	 */
+	protected function _register_rpc_routes()
+	{
+		$routes = array();
+		foreach (self::versions_served() as $version => $hidden_endpoint) {
+			$routes[self::ee_api_namespace . $version] = $this->_get_rpc_route_data_for_version($version,
+				$hidden_endpoint);
+		}
+		return $routes;
+	}
+
+
+
+	/**
+	 * @param string  $version
+	 * @param boolean $hidden_endpoint
+	 * @return array
+	 */
+	protected function _get_rpc_route_data_for_version($version, $hidden_endpoint = false)
+	{
+		$this_versions_routes = array();
+		//checkin endpoint
+		$this_versions_routes['registrations/(?P<REG_ID>\d+)/toggle_checkin_for_datetime/(?P<DTT_ID>\d+)'] = array(
+			array(
+				'callback'        => array(
+					'EventEspresso\core\libraries\rest_api\controllers\rpc\Checkin',
+					'handle_request_toggle_checkin',
+				),
+				'methods'         => WP_REST_Server::CREATABLE,
+				'hidden_endpoint' => $hidden_endpoint,
+				'args'            => array(
+					'force' => array(
+						'required'    => false,
+						'default'     => false,
+						'description' => __('Whether to force toggle checkin, or to verify the registration status and allowed ticket uses',
+							'event_espresso'),
+					),
+				),
+			),
+		);
+		return apply_filters(
+			'FHEE__EED_Core_Rest_Api___register_rpc_routes__this_versions_routes',
+			$this_versions_routes,
+			$version,
+			$hidden_endpoint
+		);
+	}
+
+
+
+	/**
+	 * Gets the query params that can be used when request one or many
+	 *
+	 * @param EEM_Base $model
+	 * @param string   $version
+	 * @return array
+	 */
+	protected function _get_response_selection_query_params(\EEM_Base $model, $version)
+	{
+		return apply_filters(
+			'FHEE__EED_Core_Rest_Api___get_response_selection_query_params',
+			array(
+				'include'   => array(
+					'required' => false,
+					'default'  => '*',
+				),
+				'calculate' => array(
+					'required' => false,
+					'default'  => '',
+					'enum'     => self::$_field_calculator->retrieve_calculated_fields_for_model($model),
+				),
+			),
+			$model,
+			$version
+		);
+	}
+
+
+
+	/**
+	 * Gets info about reading query params that are acceptable
+	 *
+	 * @param \EEM_Base $model eg 'Event' or 'Venue'
+	 * @param  string   $version
+	 * @return array    describing the args acceptable when querying this model
+	 * @throws \EE_Error
+	 */
+	protected function _get_read_query_params(\EEM_Base $model, $version)
+	{
+		$default_orderby = array();
+		foreach ($model->get_combined_primary_key_fields() as $key_field) {
+			$default_orderby[$key_field->get_name()] = 'ASC';
+		}
+		return array_merge(
+			$this->_get_response_selection_query_params($model, $version),
+			array(
+				'where'    => array(
+					'required' => false,
+					'default'  => array(),
+				),
+				'limit'    => array(
+					'required' => false,
+					'default'  => EED_Core_Rest_Api::get_default_query_limit(),
+				),
+				'order_by' => array(
+					'required' => false,
+					'default'  => $default_orderby,
+				),
+				'group_by' => array(
+					'required' => false,
+					'default'  => null,
+				),
+				'having'   => array(
+					'required' => false,
+					'default'  => null,
+				),
+				'caps'     => array(
+					'required' => false,
+					'default'  => EEM_Base::caps_read,
+				),
+			)
+		);
+	}
+
+
+
+	/**
+	 * Gets routes for the config
+	 *
+	 * @return array @see _register_model_routes
+	 * @deprecated since version 4.9.1
+	 */
+	protected function _register_config_routes()
+	{
+		$config_routes = array();
+		foreach (self::versions_served() as $version => $hidden_endpoint) {
+			$config_routes[self::ee_api_namespace . $version] = $this->_get_config_route_data_for_version($version,
+				$hidden_endpoint);
+		}
+		return $config_routes;
+	}
+
+
+
+	/**
+	 * Gets routes for the config for the specified version
+	 *
+	 * @param string  $version
+	 * @param boolean $hidden_endpoint
+	 * @return array
+	 */
+	protected function _get_config_route_data_for_version($version, $hidden_endpoint)
+	{
+		return array(
+			'config'    => array(
+				array(
+					'callback'        => array(
+						'EventEspresso\core\libraries\rest_api\controllers\config\Read',
+						'handle_request',
+					),
+					'methods'         => WP_REST_Server::READABLE,
+					'hidden_endpoint' => $hidden_endpoint,
+				),
+			),
+			'site_info' => array(
+				array(
+					'callback'        => array(
+						'EventEspresso\core\libraries\rest_api\controllers\config\Read',
+						'handle_request_site_info',
+					),
+					'methods'         => WP_REST_Server::READABLE,
+					'hidden_endpoint' => $hidden_endpoint,
+				),
+			),
+		);
+	}
+
+
+
+	/**
+	 * Gets the meta info routes
+	 *
+	 * @return array @see _register_model_routes
+	 * @deprecated since version 4.9.1
+	 */
+	protected function _register_meta_routes()
+	{
+		$meta_routes = array();
+		foreach (self::versions_served() as $version => $hidden_endpoint) {
+			$meta_routes[self::ee_api_namespace . $version] = $this->_get_meta_route_data_for_version($version,
+				$hidden_endpoint);
+		}
+		return $meta_routes;
+	}
+
+
+
+	/**
+	 * @param string  $version
+	 * @param boolean $hidden_endpoint
+	 * @return array
+	 */
+	protected function _get_meta_route_data_for_version($version, $hidden_endpoint = false)
+	{
+		return array(
+			'resources' => array(
+				array(
+					'callback'        => array(
+						'EventEspresso\core\libraries\rest_api\controllers\model\Meta',
+						'handle_request_models_meta',
+					),
+					'methods'         => WP_REST_Server::READABLE,
+					'hidden_endpoint' => $hidden_endpoint,
+				),
+			),
+		);
+	}
+
+
+
+	/**
+	 * Tries to hide old 4.6 endpoints from the
+	 *
+	 * @param array $route_data
+	 * @return array
+	 */
+	public static function hide_old_endpoints($route_data)
+	{
+		//allow API clients to override which endpoints get hidden, in case
+		//they want to discover particular endpoints
+		//also, we don't have access to the request so we have to just grab it from the superglobal
+		$force_show_ee_namespace = ltrim(
+			EEH_Array::is_set($_REQUEST, 'force_show_ee_namespace', ''),
+			'/'
+		);
+		foreach (EED_Core_Rest_Api::get_ee_route_data() as $namespace => $relative_urls) {
+			foreach ($relative_urls as $endpoint => $routes) {
+				foreach ($routes as $route) {
+					//by default, hide "hidden_endpoint"s, unless the request indicates
+					//to $force_show_ee_namespace, in which case only show that one
+					//namespace's endpoints (and hide all others)
+					if (($route['hidden_endpoint'] && $force_show_ee_namespace === '')
+						|| ($force_show_ee_namespace !== '' && $force_show_ee_namespace !== $namespace)
+					) {
+						$full_route = '/' . ltrim($namespace, '/') . '/' . ltrim($endpoint, '/');
+						unset($route_data[$full_route]);
+					}
+				}
+			}
+		}
+		return $route_data;
+	}
+
+
+
+	/**
+	 * Returns an array describing which versions of core support serving requests for.
+	 * Keys are core versions' major and minor version, and values are the
+	 * LOWEST requested version they can serve. Eg, 4.7 can serve requests for 4.6-like
+	 * data by just removing a few models and fields from the responses. However, 4.15 might remove
+	 * the answers table entirely, in which case it would be very difficult for
+	 * it to serve 4.6-style responses.
+	 * Versions of core that are missing from this array are unknowns.
+	 * previous ver
+	 *
+	 * @return array
+	 */
+	public static function version_compatibilities()
+	{
+		return apply_filters(
+			'FHEE__EED_Core_REST_API__version_compatibilities',
+			array(
+				'4.8.29' => '4.8.29',
+				'4.8.33' => '4.8.29',
+				'4.8.34' => '4.8.29',
+				'4.8.36' => '4.8.29',
+			)
+		);
+	}
+
+
+
+	/**
+	 * Gets the latest API version served. Eg if there
+	 * are two versions served of the API, 4.8.29 and 4.8.32, and
+	 * we are on core version 4.8.34, it will return the string "4.8.32"
+	 *
+	 * @return string
+	 */
+	public static function latest_rest_api_version()
+	{
+		$versions_served = \EED_Core_Rest_Api::versions_served();
+		$versions_served_keys = array_keys($versions_served);
+		return end($versions_served_keys);
+	}
+
+
+
+	/**
+	 * Using EED_Core_Rest_Api::version_compatibilities(), determines what version of
+	 * EE the API can serve requests for. Eg, if we are on 4.15 of core, and
+	 * we can serve requests from 4.12 or later, this will return array( '4.12', '4.13', '4.14', '4.15' ).
+	 * We also indicate whether or not this version should be put in the index or not
+	 *
+	 * @return array keys are API version numbers (just major and minor numbers), and values
+	 * are whether or not they should be hidden
+	 */
+	public static function versions_served()
+	{
+		$versions_served = array();
+		$possibly_served_versions = EED_Core_Rest_Api::version_compatibilities();
+		$lowest_compatible_version = end($possibly_served_versions);
+		reset($possibly_served_versions);
+		$versions_served_historically = array_keys($possibly_served_versions);
+		$latest_version = end($versions_served_historically);
+		reset($versions_served_historically);
+		//for each version of core we have ever served:
+		foreach ($versions_served_historically as $key_versioned_endpoint) {
+			//if it's not above the current core version, and it's compatible with the current version of core
+			if ($key_versioned_endpoint == $latest_version) {
+				//don't hide the latest version in the index
+				$versions_served[$key_versioned_endpoint] = false;
+			} else if (
+				$key_versioned_endpoint < EED_Core_Rest_Api::core_version()
+				&& $key_versioned_endpoint >= $lowest_compatible_version
+			) {
+				//include, but hide, previous versions which are still supported
+				$versions_served[$key_versioned_endpoint] = true;
+			} elseif (
+			apply_filters(
+				'FHEE__EED_Core_Rest_Api__versions_served__include_incompatible_versions',
+				false,
+				$possibly_served_versions
+			)
+			) {
+				//if a version is no longer supported, don't include it in index or list of versions served
+				$versions_served[$key_versioned_endpoint] = true;
+			}
+		}
+		return $versions_served;
+	}
+
+
+
+	/**
+	 * Gets the major and minor version of EE core's version string
+	 *
+	 * @return string
+	 */
+	public static function core_version()
+	{
+		return apply_filters('FHEE__EED_Core_REST_API__core_version',
+			implode('.', array_slice(explode('.', espresso_version()), 0, 3)));
+	}
+
+
+
+	/**
+	 * Gets the default limit that should be used when querying for resources
+	 *
+	 * @return int
+	 */
+	public static function get_default_query_limit()
+	{
+		//we actually don't use a const because we want folks to always use
+		//this method, not the const directly
+		return apply_filters(
+			'FHEE__EED_Core_Rest_Api__get_default_query_limit',
+			50
+		);
+	}
+
+
+
+	/**
+	 *    run - initial module setup
+	 *
+	 * @access    public
+	 * @param  WP $WP
+	 * @return    void
+	 */
+	public function run($WP)
+	{
+	}
 }
 
 // End of file EED_Core_Rest_Api.module.php

core/libraries/form_sections/strategies/layout/EE_No_Layout.strategy.php

Indentation +64 added lines, -64 removed lines

@@ -12,75 +12,75 @@
 class EE_No_Layout extends EE_Div_Per_Section_Layout
 {
 
-    /**
-     * opening div tag for a form
-     *
-     * @return string
-     */
-    public function layout_form_begin()
-    {
-        return EEH_HTML::nl(1);
-    }
+	/**
+	 * opening div tag for a form
+	 *
+	 * @return string
+	 */
+	public function layout_form_begin()
+	{
+		return EEH_HTML::nl(1);
+	}
 
 
-    /**
-     * Lays out the row for the input, including label and errors
-     *
-     * @param EE_Form_Input_Base $input
-     * @return string
-     */
-    public function layout_input($input)
-    {
-        $html = '';
-        if ($input instanceof EE_Hidden_Input) {
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-        } else if ($input instanceof EE_Submit_Input) {
-            $html .= EEH_HTML::br();
-            $html .= $input->get_html_for_input();
-        } else if ($input instanceof EE_Select_Input) {
-            $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl(1) . $input->get_html_for_label();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
-            $html .= EEH_HTML::br();
-        } else if ($input instanceof EE_Form_Input_With_Options_Base) {
-            $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
-        } else {
-            $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl(1) . $input->get_html_for_label();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
-        }
-        $html .= EEH_HTML::nl(-1);
-        return $html;
-    }
+	/**
+	 * Lays out the row for the input, including label and errors
+	 *
+	 * @param EE_Form_Input_Base $input
+	 * @return string
+	 */
+	public function layout_input($input)
+	{
+		$html = '';
+		if ($input instanceof EE_Hidden_Input) {
+			$html .= EEH_HTML::nl() . $input->get_html_for_input();
+		} else if ($input instanceof EE_Submit_Input) {
+			$html .= EEH_HTML::br();
+			$html .= $input->get_html_for_input();
+		} else if ($input instanceof EE_Select_Input) {
+			$html .= EEH_HTML::br();
+			$html .= EEH_HTML::nl(1) . $input->get_html_for_label();
+			$html .= EEH_HTML::nl() . $input->get_html_for_errors();
+			$html .= EEH_HTML::nl() . $input->get_html_for_input();
+			$html .= EEH_HTML::nl() . $input->get_html_for_help();
+			$html .= EEH_HTML::br();
+		} else if ($input instanceof EE_Form_Input_With_Options_Base) {
+			$html .= EEH_HTML::br();
+			$html .= EEH_HTML::nl() . $input->get_html_for_errors();
+			$html .= EEH_HTML::nl() . $input->get_html_for_input();
+			$html .= EEH_HTML::nl() . $input->get_html_for_help();
+		} else {
+			$html .= EEH_HTML::br();
+			$html .= EEH_HTML::nl(1) . $input->get_html_for_label();
+			$html .= EEH_HTML::nl() . $input->get_html_for_errors();
+			$html .= EEH_HTML::nl() . $input->get_html_for_input();
+			$html .= EEH_HTML::nl() . $input->get_html_for_help();
+		}
+		$html .= EEH_HTML::nl(-1);
+		return $html;
+	}
 
 
-    /**
-     * Lays out a row for the subsection
-     *
-     * @param EE_Form_Section_Proper $form_section
-     * @return string
-     */
-    public function layout_subsection($form_section)
-    {
+	/**
+	 * Lays out a row for the subsection
+	 *
+	 * @param EE_Form_Section_Proper $form_section
+	 * @return string
+	 */
+	public function layout_subsection($form_section)
+	{
 //		d( $form_section );
-        return EEH_HTML::nl(1) . $form_section->get_html() . EEH_HTML::nl(-1);
-    }
+		return EEH_HTML::nl(1) . $form_section->get_html() . EEH_HTML::nl(-1);
+	}
 
 
-    /**
-     * closing div tag for a form
-     *
-     * @return string
-     */
-    public function layout_form_end()
-    {
-        return EEH_HTML::nl(-1);
-    }
+	/**
+	 * closing div tag for a form
+	 *
+	 * @return string
+	 */
+	public function layout_form_end()
+	{
+		return EEH_HTML::nl(-1);
+	}
 }
\ No newline at end of file

Spacing +13 added lines, -13 removed lines

@@ -33,28 +33,28 @@ 
     {
         $html = '';
         if ($input instanceof EE_Hidden_Input) {
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
+            $html .= EEH_HTML::nl().$input->get_html_for_input();
         } else if ($input instanceof EE_Submit_Input) {
             $html .= EEH_HTML::br();
             $html .= $input->get_html_for_input();
         } else if ($input instanceof EE_Select_Input) {
             $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl(1) . $input->get_html_for_label();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
+            $html .= EEH_HTML::nl(1).$input->get_html_for_label();
+            $html .= EEH_HTML::nl().$input->get_html_for_errors();
+            $html .= EEH_HTML::nl().$input->get_html_for_input();
+            $html .= EEH_HTML::nl().$input->get_html_for_help();
             $html .= EEH_HTML::br();
         } else if ($input instanceof EE_Form_Input_With_Options_Base) {
             $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
+            $html .= EEH_HTML::nl().$input->get_html_for_errors();
+            $html .= EEH_HTML::nl().$input->get_html_for_input();
+            $html .= EEH_HTML::nl().$input->get_html_for_help();
         } else {
             $html .= EEH_HTML::br();
-            $html .= EEH_HTML::nl(1) . $input->get_html_for_label();
-            $html .= EEH_HTML::nl() . $input->get_html_for_errors();
-            $html .= EEH_HTML::nl() . $input->get_html_for_input();
-            $html .= EEH_HTML::nl() . $input->get_html_for_help();
+            $html .= EEH_HTML::nl(1).$input->get_html_for_label();
+            $html .= EEH_HTML::nl().$input->get_html_for_errors();
+            $html .= EEH_HTML::nl().$input->get_html_for_input();
+            $html .= EEH_HTML::nl().$input->get_html_for_help();
         }
         $html .= EEH_HTML::nl(-1);
         return $html;
@@ -70,7 +70,7 @@ 
     public function layout_subsection($form_section)
     {
 //		d( $form_section );
-        return EEH_HTML::nl(1) . $form_section->get_html() . EEH_HTML::nl(-1);
+        return EEH_HTML::nl(1).$form_section->get_html().EEH_HTML::nl(-1);
     }
 
 

core/db_classes/EE_Registration.class.php

Spacing +186 added lines, -186 removed lines

@@ -1,7 +1,7 @@ 
 <?php use EventEspresso\core\exceptions\EntityNotFoundException;
 
-if ( !defined( 'EVENT_ESPRESSO_VERSION' ) ) {
-	exit( 'No direct script access allowed' );
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
+	exit('No direct script access allowed');
 }
 /**
  * EE_Registration class
@@ -59,9 +59,9 @@ 
 	 *                             		    date_format and the second value is the time format
 	 * @return EE_Registration
 	 */
-	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, $date_formats );
+	public static function new_instance($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);
 	}
 
 
@@ -72,8 +72,8 @@ 
 	 *                          		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, $timezone );
+	public static function new_instance_from_db($props_n_values = array(), $timezone = null) {
+		return new self($props_n_values, TRUE, $timezone);
 	}
 
 
@@ -83,8 +83,8 @@ 
 	 *
 	 * @param        int $EVT_ID Event ID
 	 */
-	public function set_event( $EVT_ID = 0 ) {
-		$this->set( 'EVT_ID', $EVT_ID );
+	public function set_event($EVT_ID = 0) {
+		$this->set('EVT_ID', $EVT_ID);
 	}
 
 
@@ -98,18 +98,18 @@ 
      * @throws \EE_Error
      * @throws \RuntimeException
      */
-	public function set( $field_name, $field_value, $use_default = FALSE ) {
-		switch( $field_name ) {
+	public function set($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, $use_default );
+				if ( ! empty($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 );
+				$this->set_status($field_value, $use_default);
 				break;
 			default :
-				parent::set( $field_name, $field_value, $use_default );
+				parent::set($field_name, $field_value, $use_default);
 		}
 	}
 
@@ -127,40 +127,40 @@ 
      * @throws \RuntimeException
      * @throws \EE_Error
      */
-	public function set_status( $new_STS_ID = NULL, $use_default = FALSE ) {
+	public function set_status($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( $new_STS_ID ) // as well as the new status
+			&& ! empty($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 ( $new_STS_ID === EEM_Registration::status_id_approved ) {
+			if ($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 );
+				do_action('AHEE__EE_Registration__set_status__to_approved', $this, $old_STS_ID, $new_STS_ID);
 			// OR FROM  approved
-			} else if ( $old_STS_ID === EEM_Registration::status_id_approved ) {
+			} else if ($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 );
+				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 );
+            $transaction_payments->recalculate_transaction_total($this->transaction(), false);
+			$this->transaction()->update_status_based_on_total_paid(true);
+			do_action('AHEE__EE_Registration__set_status__after_update', $this);
 			return TRUE;
 		} else {
 			//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 );
+			parent::set('STS_ID', $new_STS_ID, $use_default);
 			return TRUE;
 		}
 	}
@@ -228,7 +228,7 @@ 
 	 *        get Status ID
 	 */
 	public function status_ID() {
-		return $this->get( 'STS_ID' );
+		return $this->get('STS_ID');
 	}
 
 
@@ -259,12 +259,12 @@ 
      * @return EE_Ticket|EE_Base_Class
      * @throws \EE_Error
      */
-	public function ticket( $include_archived = TRUE ) {
+	public function ticket($include_archived = TRUE) {
 		$query_params = array();
-		if ( $include_archived ) {
-			$query_params[ 'default_where_conditions' ] = 'none';
+		if ($include_archived) {
+			$query_params['default_where_conditions'] = 'none';
 		}
-		return $this->get_first_related( 'Ticket', $query_params );
+		return $this->get_first_related('Ticket', $query_params);
 	}
 
 
@@ -292,7 +292,7 @@ 
 	 */
 	public function wp_user() {
 		$event = $this->event();
-		if ( $event instanceof EE_Event ) {
+		if ($event instanceof EE_Event) {
 			return $event->wp_user();
 		}
 		return 0;
@@ -363,8 +363,8 @@ 
 	 *
 	 * @param        int $ATT_ID Attendee ID
 	 */
-	public function set_attendee_id( $ATT_ID = 0 ) {
-		$this->set( 'ATT_ID', $ATT_ID );
+	public function set_attendee_id($ATT_ID = 0) {
+		$this->set('ATT_ID', $ATT_ID);
 	}
 
 
@@ -374,8 +374,8 @@ 
 	 *
 	 * @param        int $TXN_ID Transaction ID
 	 */
-	public function set_transaction_id( $TXN_ID = 0 ) {
-		$this->set( 'TXN_ID', $TXN_ID );
+	public function set_transaction_id($TXN_ID = 0) {
+		$this->set('TXN_ID', $TXN_ID);
 	}
 
 
@@ -385,8 +385,8 @@ 
 	 *
 	 * @param    string $REG_session PHP Session ID
 	 */
-	public function set_session( $REG_session = '' ) {
-		$this->set( 'REG_session', $REG_session );
+	public function set_session($REG_session = '') {
+		$this->set('REG_session', $REG_session);
 	}
 
 
@@ -396,8 +396,8 @@ 
 	 *
 	 * @param    string $REG_url_link Registration URL Link
 	 */
-	public function set_reg_url_link( $REG_url_link = '' ) {
-		$this->set( 'REG_url_link', $REG_url_link );
+	public function set_reg_url_link($REG_url_link = '') {
+		$this->set('REG_url_link', $REG_url_link);
 	}
 
 
@@ -407,8 +407,8 @@ 
 	 *
 	 * @param        int $REG_count Primary Attendee
 	 */
-	public function set_count( $REG_count = 1 ) {
-		$this->set( 'REG_count', $REG_count );
+	public function set_count($REG_count = 1) {
+		$this->set('REG_count', $REG_count);
 	}
 
 
@@ -418,8 +418,8 @@ 
 	 *
 	 * @param        boolean $REG_group_size Group Registration
 	 */
-	public function set_group_size( $REG_group_size = FALSE ) {
-		$this->set( 'REG_group_size', $REG_group_size );
+	public function set_group_size($REG_group_size = FALSE) {
+		$this->set('REG_group_size', $REG_group_size);
 	}
 
 
@@ -495,8 +495,8 @@ 
 	 *
 	 * @param        mixed ( int or string ) $REG_date Registration Date - Unix timestamp or string representation of Date
 	 */
-	public function set_reg_date( $REG_date = FALSE ) {
-		$this->set( 'REG_date', $REG_date );
+	public function set_reg_date($REG_date = FALSE) {
+		$this->set('REG_date', $REG_date);
 	}
 
 
@@ -507,8 +507,8 @@ 
 	 * @access    public
 	 * @param    float $REG_final_price
 	 */
-	public function set_final_price( $REG_final_price = 0.00 ) {
-		$this->set( 'REG_final_price', $REG_final_price );
+	public function set_final_price($REG_final_price = 0.00) {
+		$this->set('REG_final_price', $REG_final_price);
 	}
 
 
@@ -519,8 +519,8 @@ 
 	 * @access    public
 	 * @param    float $REG_paid
 	 */
-	public function set_paid( $REG_paid = 0.00 ) {
-		$this->set( 'REG_paid', $REG_paid );
+	public function set_paid($REG_paid = 0.00) {
+		$this->set('REG_paid', $REG_paid);
 	}
 
 
@@ -530,8 +530,8 @@ 
 	 *
 	 * @param        boolean $REG_att_is_going Attendee Is Going
 	 */
-	public function set_att_is_going( $REG_att_is_going = FALSE ) {
-		$this->set( 'REG_att_is_going', $REG_att_is_going );
+	public function set_att_is_going($REG_att_is_going = FALSE) {
+		$this->set('REG_att_is_going', $REG_att_is_going);
 	}
 
 
@@ -541,7 +541,7 @@ 
 	 * @return EE_Attendee
 	 */
 	public function attendee() {
-		return $this->get_first_related( 'Attendee' );
+		return $this->get_first_related('Attendee');
 	}
 
 
@@ -550,7 +550,7 @@ 
 	 *        get Event ID
 	 */
 	public function event_ID() {
-		return $this->get( 'EVT_ID' );
+		return $this->get('EVT_ID');
 	}
 
 
@@ -560,7 +560,7 @@ 
 	 */
 	public function event_name() {
 		$event = $this->event_obj();
-		if ( $event ) {
+		if ($event) {
 			return $event->name();
 		} else {
 			return NULL;
@@ -574,7 +574,7 @@ 
 	 * @return EE_Event
 	 */
 	public function event_obj() {
-		return $this->get_first_related( 'Event' );
+		return $this->get_first_related('Event');
 	}
 
 
@@ -583,7 +583,7 @@ 
 	 *        get Attendee ID
 	 */
 	public function attendee_ID() {
-		return $this->get( 'ATT_ID' );
+		return $this->get('ATT_ID');
 	}
 
 
@@ -592,7 +592,7 @@ 
 	 *        get PHP Session ID
 	 */
 	public function session_ID() {
-		return $this->get( 'REG_session' );
+		return $this->get('REG_session');
 	}
 
 
@@ -602,7 +602,7 @@ 
 	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
 	 * @return string
 	 */
-	public function receipt_url( $messenger = 'html' ) {
+	public function receipt_url($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.
@@ -610,12 +610,12 @@ 
 		 * @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 );
+		$has_custom = EEH_Template::locate_template($template_relative_path, array(), TRUE, TRUE, TRUE);
 
-		if ( $has_custom ) {
-			return add_query_arg( array( 'receipt' => 'true' ), $this->invoice_url( 'launch' ) );
+		if ($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' );
+		return apply_filters('FHEE__EE_Registration__receipt_url__receipt_url', '', $this, $messenger, 'receipt');
 	}
 
 
@@ -626,28 +626,28 @@ 
 	 * @param string $messenger 'pdf' or 'html'.  Default 'html'.
 	 * @return string
 	 */
-	public function invoice_url( $messenger = 'html' ) {
+	public function invoice_url($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 );
+		$has_custom = EEH_Template::locate_template($template_relative_path, array(), TRUE, TRUE, TRUE);
 
-		if ( $has_custom ) {
-			if ( $messenger == 'html' ) {
-				return $this->invoice_url( 'launch' );
+		if ($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 = array('ee' => $route, 'id' => $this->reg_url_link());
+			if ($messenger == 'html') {
 				$query_args['html'] = TRUE;
 			}
-			return add_query_arg( $query_args, get_permalink( EE_Registry::instance()->CFG->core->thank_you_page_id ) );
+			return add_query_arg($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' );
+		return apply_filters('FHEE__EE_Registration__invoice_url__invoice_url', '', $this, $messenger, 'invoice');
 	}
 
 
@@ -660,7 +660,7 @@ 
 	 * @throws \EE_Error
 	 */
 	public function reg_url_link() {
-		return (string)$this->get( 'REG_url_link' );
+		return (string) $this->get('REG_url_link');
 	}
 
 
@@ -670,8 +670,8 @@ 
 	 * @param string $type 'download','launch', or 'html' (default is 'launch')
 	 * @return void
 	 */
-	public function e_invoice_url( $type = 'launch' ) {
-		echo $this->invoice_url( $type );
+	public function e_invoice_url($type = 'launch') {
+		echo $this->invoice_url($type);
 	}
 
 
@@ -691,7 +691,7 @@ 
 	 * @return string
 	 */
 	public function payment_overview_url() {
-		return add_query_arg( array( 'e_reg_url_link' => $this->reg_url_link(), 'step' => 'payment_options', 'revisit' => TRUE ), EE_Registry::instance()->CFG->core->reg_page_url() );
+		return add_query_arg(array('e_reg_url_link' => $this->reg_url_link(), 'step' => 'payment_options', 'revisit' => TRUE), EE_Registry::instance()->CFG->core->reg_page_url());
 	}
 
 
@@ -702,7 +702,7 @@ 
 	 * @return string
 	 */
 	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() );
+		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());
 	}
 
 
@@ -712,7 +712,7 @@ 
 	 * @return string
 	 */
 	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' ) );
+		return EEH_URL::add_query_args_and_nonce(array('page' => 'espresso_registrations', 'action' => 'view_registration', '_REG_ID' => $this->ID()), admin_url('admin.php'));
 	}
 
 
@@ -721,7 +721,7 @@ 
 	 *    is_primary_registrant?
 	 */
 	public function is_primary_registrant() {
-		return $this->get( 'REG_count' ) == 1 ? TRUE : FALSE;
+		return $this->get('REG_count') == 1 ? TRUE : FALSE;
 	}
 
 
@@ -730,12 +730,12 @@ 
 	 * This returns the primary registration object for this registration group (which may be this object).
 	 * @return EE_Registration
 	 */
-	public function get_primary_registration()  {
-		if ( $this->is_primary_registrant() )
+	public function get_primary_registration() {
+		if ($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
-		$primary_registrant = EEM_Registration::instance()->get_one( array( array('TXN_ID' => $this->transaction_ID(), 'REG_count' => 1 ) ) );
+		$primary_registrant = EEM_Registration::instance()->get_one(array(array('TXN_ID' => $this->transaction_ID(), 'REG_count' => 1)));
 		return $primary_registrant;
 	}
 
@@ -746,7 +746,7 @@ 
 	* 		@access		public
 	*/
 	public function count() {
-		return $this->get( 'REG_count' );
+		return $this->get('REG_count');
 	}
 
 
@@ -755,7 +755,7 @@ 
 	 *        get Group Size
 	 */
 	public function group_size() {
-		return $this->get( 'REG_group_size' );
+		return $this->get('REG_group_size');
 	}
 
 
@@ -764,7 +764,7 @@ 
 	 *        get Registration Date
 	 */
 	public function date() {
-		return $this->get( 'REG_date' );
+		return $this->get('REG_date');
 	}
 
 
@@ -775,8 +775,8 @@ 
 	 * @param string $time_format
 	 * @return string
 	 */
-	public function pretty_date( $date_format = NULL, $time_format = NULL ) {
-		return $this->get_datetime( 'REG_date', $date_format, $time_format );
+	public function pretty_date($date_format = NULL, $time_format = NULL) {
+		return $this->get_datetime('REG_date', $date_format, $time_format);
 	}
 
 
@@ -788,7 +788,7 @@ 
 	 * @return    float
 	 */
 	public function final_price() {
-		return $this->get( 'REG_final_price' );
+		return $this->get('REG_final_price');
 	}
 
 
@@ -799,7 +799,7 @@ 
 	 * @return string
 	 */
 	public function pretty_final_price() {
-		return $this->get_pretty( 'REG_final_price' );
+		return $this->get_pretty('REG_final_price');
 	}
 
 
@@ -809,7 +809,7 @@ 
 	 * @return 	float
 	 */
 	public function paid() {
-		return $this->get( 'REG_paid' );
+		return $this->get('REG_paid');
 	}
 
 
@@ -819,7 +819,7 @@ 
 	 * @return 	float
 	 */
 	public function pretty_paid() {
-		return $this->get_pretty( 'REG_paid' );
+		return $this->get_pretty('REG_paid');
 	}
 
 
@@ -830,11 +830,11 @@ 
 	 * @param array $requires_payment
 	 * @return bool
 	 */
-	public function owes_monies_and_can_pay( $requires_payment = array()) {
+	public function owes_monies_and_can_pay($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();
+		$requires_payment = ! empty($requires_payment) ? $requires_payment : EEM_Registration::reg_statuses_that_allow_payment();
 		if (
-			in_array( $this->status_ID(), $requires_payment ) &&
+			in_array($this->status_ID(), $requires_payment) &&
 			$this->final_price() != 0 &&
 			$this->final_price() != $this->paid()
 		) {
@@ -851,8 +851,8 @@ 
 	 * @param bool $show_icons
 	 * @return void
 	 */
-	public function e_pretty_status( $show_icons = FALSE ) {
-		echo $this->pretty_status( $show_icons );
+	public function e_pretty_status($show_icons = FALSE) {
+		echo $this->pretty_status($show_icons);
 	}
 
 
@@ -863,10 +863,10 @@ 
 	 * @param bool $show_icons
 	 * @return string
 	 */
-	public function pretty_status( $show_icons = FALSE ) {
-		$status = EEM_Status::instance()->localized_status( array( $this->status_ID() => __( 'unknown', 'event_espresso' ) ), FALSE, 'sentence' );
+	public function pretty_status($show_icons = FALSE) {
+		$status = EEM_Status::instance()->localized_status(array($this->status_ID() => __('unknown', 'event_espresso')), FALSE, 'sentence');
 		$icon = '';
-		switch ( $this->status_ID() ) {
+		switch ($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;
@@ -889,7 +889,7 @@ 
 				$icon = $show_icons ? '<span class="dashicons dashicons-clipboard ee-icon-size-16 purple-text"></span>' : '';
 				break;
 		}
-		return $icon . $status[ $this->status_ID() ];
+		return $icon.$status[$this->status_ID()];
 	}
 
 
@@ -898,7 +898,7 @@ 
 	 *        get Attendee Is Going
 	 */
 	public function att_is_going() {
-		return $this->get( 'REG_att_is_going' );
+		return $this->get('REG_att_is_going');
 	}
 
 
@@ -908,8 +908,8 @@ 
 	 * @param array $query_params like EEM_Base::get_all
 	 * @return EE_Answer[]
 	 */
-	public function answers( $query_params = NULL ) {
-		return $this->get_many_related( 'Answer', $query_params );
+	public function answers($query_params = NULL) {
+		return $this->get_many_related('Answer', $query_params);
 	}
 
 
@@ -923,9 +923,9 @@ 
 	 * (because the answer might be an array of answer values, so passing pretty_value=true
 	 * will convert it into some kind of string)
 	 */
-	public function answer_value_to_question( $question, $pretty_value=true ) {
+	public function answer_value_to_question($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,$pretty_value);
+		return EEM_Answer::instance()->get_answer_value_to_question($this, $question_id, $pretty_value);
 	}
 
 
@@ -938,13 +938,13 @@ 
 	 */
 	public function question_groups() {
 		$question_groups = array();
-		if ( $this->event() instanceof EE_Event ) {
+		if ($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' )
+					'order_by' => array('QSG_order' => 'ASC')
 				)
 			);
 		}
@@ -961,7 +961,7 @@ 
 	 */
 	public function count_question_groups() {
 		$qg_count = 0;
-		if ( $this->event() instanceof EE_Event ) {
+		if ($this->event() instanceof EE_Event) {
 			$qg_count = $this->event()->count_related(
 				'Question_Group',
 				array(
@@ -982,7 +982,7 @@ 
 	 * @return string
 	 */
 	public function reg_date() {
-		return $this->get_datetime( 'REG_date' );
+		return $this->get_datetime('REG_date');
 	}
 
 
@@ -994,7 +994,7 @@ 
 	 * @return EE_Datetime_Ticket
 	 */
 	public function datetime_ticket() {
-		return $this->get_first_related( 'Datetime_Ticket' );
+		return $this->get_first_related('Datetime_Ticket');
 	}
 
 
@@ -1004,15 +1004,15 @@ 
 	 * @param EE_Datetime_Ticket $datetime_ticket
 	 * @return EE_Datetime_Ticket
 	 */
-	public function set_datetime_ticket( $datetime_ticket ) {
-		return $this->_add_relation_to( $datetime_ticket, 'Datetime_Ticket' );
+	public function set_datetime_ticket($datetime_ticket) {
+		return $this->_add_relation_to($datetime_ticket, 'Datetime_Ticket');
 	}
 	/**
 	 * Gets deleted
 	 * @return boolean
 	 */
 	public function deleted() {
-		return $this->get( 'REG_deleted' );
+		return $this->get('REG_deleted');
 	}
 
 	/**
@@ -1021,7 +1021,7 @@ 
 	 * @return boolean
 	 */
 	public function set_deleted($deleted) {
-	    if ( $deleted ) {
+	    if ($deleted) {
 	        $this->delete();
         } else {
 	        $this->restore();
@@ -1035,7 +1035,7 @@ 
 	 * @return EE_Status
 	 */
 	public function status_obj() {
-		return $this->get_first_related( 'Status' );
+		return $this->get_first_related('Status');
 	}
 
 
@@ -1046,7 +1046,7 @@ 
 	 * @return int
 	 */
 	public function count_checkins() {
-		return $this->get_model()->count_related( $this, 'Checkin' );
+		return $this->get_model()->count_related($this, 'Checkin');
 	}
 
 
@@ -1056,7 +1056,7 @@ 
 	 * @return int
 	 */
 	public function count_checkins_not_checkedout() {
-		return $this->get_model()->count_related( $this, 'Checkin', array( array( 'CHK_in' => 1 ) ) );
+		return $this->get_model()->count_related($this, 'Checkin', array(array('CHK_in' => 1)));
 	}
 
 
@@ -1069,20 +1069,20 @@ 
 	 *
 	 * @return bool
 	 */
-	public function can_checkin( $DTT_OR_ID, $check_approved = TRUE ) {
-		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID( $DTT_OR_ID );
+	public function can_checkin($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() ) || ! $DTT_ID ) {
+		if (($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 ) ) ) ) ) {
+		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 );
+		return $this->verify_can_checkin_against_TKT_uses($DTT_ID);
 	}
 
 
@@ -1095,10 +1095,10 @@ 
 	 * @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.
 	 */
-	public function verify_can_checkin_against_TKT_uses( $DTT_OR_ID ) {
-		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID( $DTT_OR_ID );
+	public function verify_can_checkin_against_TKT_uses($DTT_OR_ID) {
+		$DTT_ID = EEM_Datetime::instance()->ensure_is_ID($DTT_OR_ID);
 
-		if ( ! $DTT_ID ) {
+		if ( ! $DTT_ID) {
 			return false;
 		}
 
@@ -1106,23 +1106,23 @@ 
 
 		// 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;
 		}
 
 		//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 ) ) ) ) {
+		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 );
+		$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 >= $max_uses ) {
-			EE_Error::add_error( __( 'Check-in denied because number of datetime uses for the ticket has been reached or exceeded.', 'event_espresso' ), __FILE__, __FUNCTION__, __LINE__ );
+		if ($count_unique_dtt_checkins >= $max_uses) {
+			EE_Error::add_error(__('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;
@@ -1144,15 +1144,15 @@ 
      * @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( $DTT_ID ) ) {
+	public function toggle_checkin_status($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 ) ) {
+		} elseif ( ! $this->can_checkin($DTT_ID, $verify)) {
 			EE_Error::add_error(
 					sprintf(
-						__( 'The given registration (ID:%1$d) can not be checked in to the given DTT_ID (%2$d), because the registration does not have access', 'event_espresso'),
+						__('The given registration (ID:%1$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
 					),
@@ -1166,8 +1166,8 @@ 
 			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 ];
+		$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;
@@ -1175,24 +1175,24 @@ 
 		// 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(
+		$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 ( $checkin->save() === 0 ) {
-			if ( WP_DEBUG ) {
+		if ($checkin->save() === 0) {
+			if (WP_DEBUG) {
 				global $wpdb;
 				$error = sprintf(
-					__( 'Registration check in update failed because of the following database error: %1$s%2$s', 'event_espresso' ),
+					__('Registration check in update failed because of the following database error: %1$s%2$s', 'event_espresso'),
 					'<br />',
 					$wpdb->last_error
 				);
 			} else {
-				$error = __( 'Registration check in update failed because of an unknown database error', 'event_espresso' );
+				$error = __('Registration check in update failed because of an unknown database error', 'event_espresso');
 			}
-			EE_Error::add_error( $error, __FILE__, __FUNCTION__, __LINE__ );
+			EE_Error::add_error($error, __FILE__, __FUNCTION__, __LINE__);
 			return false;
 		}
 		return $status_to;
@@ -1213,7 +1213,7 @@ 
 				array(
 					'Ticket.Registration.REG_ID' => $this->ID()
 				),
-				'order_by' => array( 'DTT_EVT_start' => 'DESC' )
+				'order_by' => array('DTT_EVT_start' => 'DESC')
 			)
 		);
 	}
@@ -1232,7 +1232,7 @@ 
 				array(
 					'Ticket.Registration.REG_ID' => $this->ID()
 				),
-				'order_by' => array( 'DTT_EVT_start' => 'ASC' )
+				'order_by' => array('DTT_EVT_start' => 'ASC')
 			)
 		);
 	}
@@ -1251,21 +1251,21 @@ 
      * @return int                Integer representing Check-in status.
      * @throws \EE_Error
      */
-	public function check_in_status_for_datetime( $DTT_ID = 0, $checkin = null ) {
+	public function check_in_status_for_datetime($DTT_ID = 0, $checkin = null) {
 		$checkin_query_params = array(
-			'order_by' => array( 'CHK_timestamp' => 'DESC' )
+			'order_by' => array('CHK_timestamp' => 'DESC')
 		);
 
-		if ( $DTT_ID > 0 ) {
-			$checkin_query_params[0] = array( 'DTT_ID' => $DTT_ID );
+		if ($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' ) ) {
+            : $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.
@@ -1281,28 +1281,28 @@ 
 	 * @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
 	 */
-	public function get_checkin_msg( $DTT_ID, $error = FALSE ) {
+	public function get_checkin_msg($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() );
+		$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 );
+			$cur_status = $this->check_in_status_for_datetime($DTT_ID);
 			//what is the status message going to be?
-			switch ( $cur_status ) {
+			switch ($cur_status) {
 				case EE_Registration::checkin_status_never :
-					return sprintf( __( "%s has been removed from Check-in records", "event_espresso" ), $attendee->full_name() );
+					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() );
+					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() );
+					return sprintf(__('%s has been checked out', 'event_espresso'), $attendee->full_name());
 					break;
 			}
 		}
-		return __( "The check-in status could not be determined.", "event_espresso" );
+		return __("The check-in status could not be determined.", "event_espresso");
 	}
 
 
@@ -1326,7 +1326,7 @@ 
 	 *        get Registration Code
 	 */
 	public function reg_code() {
-		return $this->get( 'REG_code' );
+		return $this->get('REG_code');
 	}
 
 
@@ -1335,7 +1335,7 @@ 
 	 *        get Transaction ID
 	 */
 	public function transaction_ID() {
-		return $this->get( 'TXN_ID' );
+		return $this->get('TXN_ID');
 	}
 
 
@@ -1344,7 +1344,7 @@ 
 	 * @return int
 	 */
 	public function ticket_ID() {
-		return $this->get( 'TKT_ID' );
+		return $this->get('TKT_ID');
 	}
 
 
@@ -1356,17 +1356,17 @@ 
 	 * @param    string $REG_code Registration Code
 	 * @param	boolean $use_default
 	 */
-	public function set_reg_code( $REG_code, $use_default = FALSE ) {
-		if ( empty( $REG_code )) {
-			EE_Error::add_error( __( 'REG_code can not be empty.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__ );
+	public function set_reg_code($REG_code, $use_default = FALSE) {
+		if (empty($REG_code)) {
+			EE_Error::add_error(__('REG_code can not be empty.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
 			return;
 		}
-		if ( ! $this->reg_code() ) {
-			parent::set( 'REG_code', $REG_code, $use_default );
+		if ( ! $this->reg_code()) {
+			parent::set('REG_code', $REG_code, $use_default);
 		} else {
 			EE_Error::doing_it_wrong(
-				__CLASS__ . '::' . __FUNCTION__,
-				__( 'Can not change a registration REG_code once it has been set.', 'event_espresso' ),
+				__CLASS__.'::'.__FUNCTION__,
+				__('Can not change a registration REG_code once it has been set.', 'event_espresso'),
 				'4.6.0'
 			);
 		}
@@ -1386,17 +1386,17 @@ 
 	 * @return EE_Registration[]  or empty array if this isn't a group registration.
 	 */
 	public function get_all_other_registrations_in_group() {
-		if ( $this->group_size() < 2 ) {
+		if ($this->group_size() < 2) {
 			return array();
 		}
 
 		$query[0] = array(
 			'TXN_ID' => $this->transaction_ID(),
-			'REG_ID' => array( '!=', $this->ID() ),
+			'REG_ID' => array('!=', $this->ID()),
 			'TKT_ID' => $this->ticket_ID()
 			);
 
-		$registrations = $this->get_model()->get_all( $query );
+		$registrations = $this->get_model()->get_all($query);
 		return $registrations;
 	}
 
@@ -1405,14 +1405,14 @@ 
 	 * @return string
 	 */
 	public function get_admin_details_link() {
-		EE_Registry::instance()->load_helper( 'URL' );
+		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' )
+			admin_url('admin.php')
 		);
 	}
 
@@ -1437,12 +1437,12 @@ 
 	 * @return string
 	 */
 	public function get_admin_overview_link() {
-		EE_Registry::instance()->load_helper( 'URL' );
+		EE_Registry::instance()->load_helper('URL');
 		return EEH_URL::add_query_args_and_nonce(
 			array(
 				'page' => 'espresso_registrations'
 			),
-			admin_url( 'admin.php' )
+			admin_url('admin.php')
 		);
 	}
 
@@ -1453,8 +1453,8 @@ 
 	 * @return \EE_Registration[]
 	 * @throws \EE_Error
 	 */
-	public function payments( $query_params = array() ) {
-		return $this->get_many_related( 'Payment', $query_params );
+	public function payments($query_params = array()) {
+		return $this->get_many_related('Payment', $query_params);
 	}
 
 
@@ -1464,8 +1464,8 @@ 
 	 * @return \EE_Registration_Payment[]
 	 * @throws \EE_Error
 	 */
-	public function registration_payments( $query_params = array() ) {
-		return $this->get_many_related( 'Registration_Payment', $query_params );
+	public function registration_payments($query_params = array()) {
+		return $this->get_many_related('Registration_Payment', $query_params);
 	}
 
 
@@ -1478,7 +1478,7 @@ 
 	 * @return EE_Payment_Method|null
 	 */
 	public function payment_method() {
-		return EEM_Payment_Method::instance()->get_last_used_for_registration( $this );
+		return EEM_Payment_Method::instance()->get_last_used_for_registration($this);
 	}
 
 
@@ -1525,7 +1525,7 @@ 
      */
     public function delete()
     {
-        if($this->update_extra_meta(EE_Registration::PRE_TRASH_REG_STATUS_KEY, $this->status_ID()) === true) {
+        if ($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();

modules/single_page_checkout/EED_Single_Page_Checkout.module.php

Indentation +1704 added lines, -1704 removed lines

@@ -2,7 +2,7 @@ 
 use EventEspresso\core\exceptions\InvalidEntityException;
 
 if ( ! defined('EVENT_ESPRESSO_VERSION')) {
-    exit('No direct script access allowed');
+	exit('No direct script access allowed');
 }
 
 
@@ -17,1709 +17,1709 @@ 
 class EED_Single_Page_Checkout extends EED_Module
 {
 
-    /**
-     * $_initialized - has the SPCO controller already been initialized ?
-     *
-     * @access private
-     * @var bool $_initialized
-     */
-    private static $_initialized = false;
-
-
-    /**
-     * $_checkout_verified - is the EE_Checkout verified as correct for this request ?
-     *
-     * @access private
-     * @var bool $_valid_checkout
-     */
-    private static $_checkout_verified = true;
-
-    /**
-     *    $_reg_steps_array - holds initial array of reg steps
-     *
-     * @access private
-     * @var array $_reg_steps_array
-     */
-    private static $_reg_steps_array = array();
-
-    /**
-     *    $checkout - EE_Checkout object for handling the properties of the current checkout process
-     *
-     * @access public
-     * @var EE_Checkout $checkout
-     */
-    public $checkout;
-
-
-
-    /**
-     * @return EED_Single_Page_Checkout
-     */
-    public static function instance()
-    {
-        add_filter('EED_Single_Page_Checkout__SPCO_active', '__return_true');
-        return parent::get_instance(__CLASS__);
-    }
-
-
-
-    /**
-     * @return EE_CART
-     */
-    public function cart()
-    {
-        return $this->checkout->cart;
-    }
-
-
-
-    /**
-     * @return EE_Transaction
-     */
-    public function transaction()
-    {
-        return $this->checkout->transaction;
-    }
-
-
-
-    /**
-     *    set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     * @throws \EE_Error
-     */
-    public static function set_hooks()
-    {
-        EED_Single_Page_Checkout::set_definitions();
-    }
-
-
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     * @throws \EE_Error
-     */
-    public static function set_hooks_admin()
-    {
-        EED_Single_Page_Checkout::set_definitions();
-        if ( ! (defined('DOING_AJAX') && DOING_AJAX)) {
-            // hook into the top of pre_get_posts to set the reg step routing, which gives other modules or plugins a chance to modify the reg steps, but just before the routes get called
-            add_action('pre_get_posts', array('EED_Single_Page_Checkout', 'load_reg_steps'), 1);
-            return;
-        }
-        // going to start an output buffer in case anything gets accidentally output that might disrupt our JSON response
-        ob_start();
-        EED_Single_Page_Checkout::load_request_handler();
-        EED_Single_Page_Checkout::load_reg_steps();
-        // set ajax hooks
-        add_action('wp_ajax_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
-        add_action('wp_ajax_nopriv_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
-        add_action('wp_ajax_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
-        add_action('wp_ajax_nopriv_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
-        add_action('wp_ajax_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
-        add_action('wp_ajax_nopriv_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
-    }
-
-
-
-    /**
-     *    process ajax request
-     *
-     * @param string $ajax_action
-     * @throws \EE_Error
-     */
-    public static function process_ajax_request($ajax_action)
-    {
-        EE_Registry::instance()->REQ->set('action', $ajax_action);
-        EED_Single_Page_Checkout::instance()->_initialize();
-    }
-
-
-
-    /**
-     *    ajax display registration step
-     *
-     * @throws \EE_Error
-     */
-    public static function display_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('display_spco_reg_step');
-    }
-
-
-
-    /**
-     *    ajax process registration step
-     *
-     * @throws \EE_Error
-     */
-    public static function process_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('process_reg_step');
-    }
-
-
-
-    /**
-     *    ajax process registration step
-     *
-     * @throws \EE_Error
-     */
-    public static function update_reg_step()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('update_reg_step');
-    }
-
-
-
-    /**
-     *   update_checkout
-     *
-     * @access public
-     * @return void
-     * @throws \EE_Error
-     */
-    public static function update_checkout()
-    {
-        EED_Single_Page_Checkout::process_ajax_request('update_checkout');
-    }
-
-
-
-    /**
-     *    load_request_handler
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function load_request_handler()
-    {
-        // load core Request_Handler class
-        if ( ! isset(EE_Registry::instance()->REQ)) {
-            EE_Registry::instance()->load_core('Request_Handler');
-        }
-    }
-
-
-
-    /**
-     *    set_definitions
-     *
-     * @access    public
-     * @return    void
-     * @throws \EE_Error
-     */
-    public static function set_definitions()
-    {
-        define('SPCO_BASE_PATH', rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS) . DS);
-        define('SPCO_CSS_URL', plugin_dir_url(__FILE__) . 'css' . DS);
-        define('SPCO_IMG_URL', plugin_dir_url(__FILE__) . 'img' . DS);
-        define('SPCO_JS_URL', plugin_dir_url(__FILE__) . 'js' . DS);
-        define('SPCO_INC_PATH', SPCO_BASE_PATH . 'inc' . DS);
-        define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH . 'reg_steps' . DS);
-        define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH . 'templates' . DS);
-        EEH_Autoloader::register_autoloaders_for_each_file_in_folder(SPCO_BASE_PATH, true);
-        EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
-            __('%1$sWe\'re sorry, but you\'re registration time has expired.%2$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
-                'event_espresso'),
-            '<h4 class="important-notice">',
-            '</h4>',
-            '<br />',
-            '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
-            '">',
-            '</a>',
-            '</p>'
-        );
-    }
-
-
-
-    /**
-     * load_reg_steps
-     * loads and instantiates each reg step based on the EE_Registry::instance()->CFG->registration->reg_steps array
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return void
-     */
-    public static function load_reg_steps()
-    {
-        static $reg_steps_loaded = false;
-        if ($reg_steps_loaded) {
-            return;
-        }
-        // filter list of reg_steps
-        $reg_steps_to_load = (array)apply_filters(
-            'AHEE__SPCO__load_reg_steps__reg_steps_to_load',
-            EED_Single_Page_Checkout::get_reg_steps()
-        );
-        // sort by key (order)
-        ksort($reg_steps_to_load);
-        // loop through folders
-        foreach ($reg_steps_to_load as $order => $reg_step) {
-            // we need a
-            if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
-                // copy over to the reg_steps_array
-                EED_Single_Page_Checkout::$_reg_steps_array[$order] = $reg_step;
-                // register custom key route for each reg step
-                // ie: step=>"slug" - this is the entire reason we load the reg steps array now
-                EE_Config::register_route($reg_step['slug'], 'EED_Single_Page_Checkout', 'run', 'step');
-                // add AJAX or other hooks
-                if (isset($reg_step['has_hooks']) && $reg_step['has_hooks']) {
-                    // setup autoloaders if necessary
-                    if ( ! class_exists($reg_step['class_name'])) {
-                        EEH_Autoloader::register_autoloaders_for_each_file_in_folder($reg_step['file_path'], true);
-                    }
-                    if (is_callable($reg_step['class_name'], 'set_hooks')) {
-                        call_user_func(array($reg_step['class_name'], 'set_hooks'));
-                    }
-                }
-            }
-        }
-        $reg_steps_loaded = true;
-    }
-
-
-
-    /**
-     *    get_reg_steps
-     *
-     * @access    public
-     * @return    array
-     */
-    public static function get_reg_steps()
-    {
-        $reg_steps = EE_Registry::instance()->CFG->registration->reg_steps;
-        if (empty($reg_steps)) {
-            $reg_steps = array(
-                10  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'attendee_information',
-                    'class_name' => 'EE_SPCO_Reg_Step_Attendee_Information',
-                    'slug'       => 'attendee_information',
-                    'has_hooks'  => false,
-                ),
-                20  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'registration_confirmation',
-                    'class_name' => 'EE_SPCO_Reg_Step_Registration_Confirmation',
-                    'slug'       => 'registration_confirmation',
-                    'has_hooks'  => false,
-                ),
-                30  => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'payment_options',
-                    'class_name' => 'EE_SPCO_Reg_Step_Payment_Options',
-                    'slug'       => 'payment_options',
-                    'has_hooks'  => true,
-                ),
-                999 => array(
-                    'file_path'  => SPCO_REG_STEPS_PATH . 'finalize_registration',
-                    'class_name' => 'EE_SPCO_Reg_Step_Finalize_Registration',
-                    'slug'       => 'finalize_registration',
-                    'has_hooks'  => false,
-                ),
-            );
-        }
-        return $reg_steps;
-    }
-
-
-
-    /**
-     *    registration_checkout_for_admin
-     *
-     * @access    public
-     * @return    string
-     * @throws \EE_Error
-     */
-    public static function registration_checkout_for_admin()
-    {
-        EED_Single_Page_Checkout::load_reg_steps();
-        EE_Registry::instance()->REQ->set('step', 'attendee_information');
-        EE_Registry::instance()->REQ->set('action', 'display_spco_reg_step');
-        EE_Registry::instance()->REQ->set('process_form_submission', false);
-        EED_Single_Page_Checkout::instance()->_initialize();
-        EED_Single_Page_Checkout::instance()->_display_spco_reg_form();
-        return EE_Registry::instance()->REQ->get_output();
-    }
-
-
-
-    /**
-     * process_registration_from_admin
-     *
-     * @access public
-     * @return \EE_Transaction
-     * @throws \EE_Error
-     */
-    public static function process_registration_from_admin()
-    {
-        EED_Single_Page_Checkout::load_reg_steps();
-        EE_Registry::instance()->REQ->set('step', 'attendee_information');
-        EE_Registry::instance()->REQ->set('action', 'process_reg_step');
-        EE_Registry::instance()->REQ->set('process_form_submission', true);
-        EED_Single_Page_Checkout::instance()->_initialize();
-        if (EED_Single_Page_Checkout::instance()->checkout->current_step->completed()) {
-            $final_reg_step = end(EED_Single_Page_Checkout::instance()->checkout->reg_steps);
-            if ($final_reg_step instanceof EE_SPCO_Reg_Step_Finalize_Registration) {
-                EED_Single_Page_Checkout::instance()->checkout->set_reg_step_initiated($final_reg_step);
-                if ($final_reg_step->process_reg_step()) {
-                    $final_reg_step->set_completed();
-                    EED_Single_Page_Checkout::instance()->checkout->update_txn_reg_steps_array();
-                    return EED_Single_Page_Checkout::instance()->checkout->transaction;
-                }
-            }
-        }
-        return null;
-    }
-
-
-
-    /**
-     *    run
-     *
-     * @access    public
-     * @param WP_Query $WP_Query
-     * @return    void
-     * @throws \EE_Error
-     */
-    public function run($WP_Query)
-    {
-        if (
-            $WP_Query instanceof WP_Query
-            && $WP_Query->is_main_query()
-            && apply_filters('FHEE__EED_Single_Page_Checkout__run', true)
-            && $this->_is_reg_checkout()
-        ) {
-            $this->_initialize();
-        }
-    }
-
-
-
-    /**
-     * determines whether current url matches reg page url
-     *
-     * @return bool
-     */
-    protected function _is_reg_checkout()
-    {
-        // get current permalink for reg page without any extra query args
-        $reg_page_url = \get_permalink(EE_Config::instance()->core->reg_page_id);
-        // get request URI for current request, but without the scheme or host
-        $current_request_uri = \EEH_URL::filter_input_server_url('REQUEST_URI');
-        $current_request_uri = html_entity_decode($current_request_uri);
-        // get array of query args from the current request URI
-        $query_args = \EEH_URL::get_query_string($current_request_uri);
-        // grab page id if it is set
-        $page_id = isset($query_args['page_id']) ? absint($query_args['page_id']) : 0;
-        // and remove the page id from the query args (we will re-add it later)
-        unset($query_args['page_id']);
-        // now strip all query args from current request URI
-        $current_request_uri = remove_query_arg(array_keys($query_args), $current_request_uri);
-        // and re-add the page id if it was set
-        if ($page_id) {
-            $current_request_uri = add_query_arg('page_id', $page_id, $current_request_uri);
-        }
-        // remove slashes and ?
-        $current_request_uri = trim($current_request_uri, '?/');
-        // is current request URI part of the known full reg page URL ?
-        return ! empty($current_request_uri) && strpos($reg_page_url, $current_request_uri) !== false;
-    }
-
-
-
-    /**
-     *    run
-     *
-     * @access    public
-     * @param WP_Query $WP_Query
-     * @return    void
-     * @throws \EE_Error
-     */
-    public static function init($WP_Query)
-    {
-        EED_Single_Page_Checkout::instance()->run($WP_Query);
-    }
-
-
-
-    /**
-     *    _initialize - initial module setup
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    void
-     */
-    private function _initialize()
-    {
-        // ensure SPCO doesn't run twice
-        if (EED_Single_Page_Checkout::$_initialized) {
-            return;
-        }
-        try {
-            $this->_verify_session();
-            // setup the EE_Checkout object
-            $this->checkout = $this->_initialize_checkout();
-            // filter checkout
-            $this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize__checkout', $this->checkout);
-            // get the $_GET
-            $this->_get_request_vars();
-            if ($this->_block_bots()) {
-                return;
-            }
-            // filter continue_reg
-            $this->checkout->continue_reg = apply_filters('FHEE__EED_Single_Page_Checkout__init___continue_reg', true, $this->checkout);
-            // load the reg steps array
-            if ( ! $this->_load_and_instantiate_reg_steps()) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // set the current step
-            $this->checkout->set_current_step($this->checkout->step);
-            // and the next step
-            $this->checkout->set_next_step();
-            // verify that everything has been setup correctly
-            if ( ! ($this->_verify_transaction_and_get_registrations() && $this->_final_verifications())) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // lock the transaction
-            $this->checkout->transaction->lock();
-            // make sure all of our cached objects are added to their respective model entity mappers
-            $this->checkout->refresh_all_entities();
-            // set amount owing
-            $this->checkout->amount_owing = $this->checkout->transaction->remaining();
-            // initialize each reg step, which gives them the chance to potentially alter the process
-            $this->_initialize_reg_steps();
-            // DEBUG LOG
-            //$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
-            // get reg form
-            if( ! $this->_check_form_submission()) {
-                EED_Single_Page_Checkout::$_initialized = true;
-                return;
-            }
-            // checkout the action!!!
-            $this->_process_form_action();
-            // add some style and make it dance
-            $this->add_styles_and_scripts();
-            // kk... SPCO has successfully run
-            EED_Single_Page_Checkout::$_initialized = true;
-            // set no cache headers and constants
-            EE_System::do_not_cache();
-            // add anchor
-            add_action('loop_start', array($this, 'set_checkout_anchor'), 1);
-            // remove transaction lock
-            add_action('shutdown', array($this, 'unlock_transaction'), 1);
-        } catch (Exception $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-
-    /**
-     *    _verify_session
-     * checks that the session is valid and not expired
-     *
-     * @access    private
-     * @throws EE_Error
-     */
-    private function _verify_session()
-    {
-        if ( ! EE_Registry::instance()->SSN instanceof EE_Session) {
-            throw new EE_Error(__('The EE_Session class could not be loaded.', 'event_espresso'));
-        }
-        // is session still valid ?
-        if (EE_Registry::instance()->SSN->expired() && EE_Registry::instance()->REQ->get('e_reg_url_link', '') === '') {
-            $this->checkout = new EE_Checkout();
-            EE_Registry::instance()->SSN->reset_cart();
-            EE_Registry::instance()->SSN->reset_checkout();
-            EE_Registry::instance()->SSN->reset_transaction();
-            EE_Error::add_attention(EE_Registry::$i18n_js_strings['registration_expiration_notice'], __FILE__,
-                __FUNCTION__, __LINE__);
-            EE_Registry::instance()->SSN->reset_expired();
-        }
-    }
-
-
-
-    /**
-     *    _initialize_checkout
-     * loads and instantiates EE_Checkout
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return EE_Checkout
-     */
-    private function _initialize_checkout()
-    {
-        // look in session for existing checkout
-        /** @type EE_Checkout $checkout */
-        $checkout = EE_Registry::instance()->SSN->checkout();
-        // verify
-        if ( ! $checkout instanceof EE_Checkout) {
-            // instantiate EE_Checkout object for handling the properties of the current checkout process
-            $checkout = EE_Registry::instance()->load_file(SPCO_INC_PATH, 'EE_Checkout', 'class', array(), false);
-        } else {
-            if ($checkout->current_step->is_final_step() && $checkout->exit_spco() === true) {
-                $this->unlock_transaction();
-                wp_safe_redirect($checkout->redirect_url);
-                exit();
-            }
-        }
-        $checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize_checkout__checkout', $checkout);
-        // verify again
-        if ( ! $checkout instanceof EE_Checkout) {
-            throw new EE_Error(__('The EE_Checkout class could not be loaded.', 'event_espresso'));
-        }
-        // reset anything that needs a clean slate for each request
-        $checkout->reset_for_current_request();
-        return $checkout;
-    }
-
-
-
-    /**
-     *    _get_request_vars
-     *
-     * @access    private
-     * @return    void
-     * @throws \EE_Error
-     */
-    private function _get_request_vars()
-    {
-        // load classes
-        EED_Single_Page_Checkout::load_request_handler();
-        //make sure this request is marked as belonging to EE
-        EE_Registry::instance()->REQ->set_espresso_page(true);
-        // which step is being requested ?
-        $this->checkout->step = EE_Registry::instance()->REQ->get('step', $this->_get_first_step());
-        // which step is being edited ?
-        $this->checkout->edit_step = EE_Registry::instance()->REQ->get('edit_step', '');
-        // and what we're doing on the current step
-        $this->checkout->action = EE_Registry::instance()->REQ->get('action', 'display_spco_reg_step');
-        // timestamp
-        $this->checkout->uts = EE_Registry::instance()->REQ->get('uts', 0);
-        // returning to edit ?
-        $this->checkout->reg_url_link = EE_Registry::instance()->REQ->get('e_reg_url_link', '');
-        // or some other kind of revisit ?
-        $this->checkout->revisit = filter_var(
-            EE_Registry::instance()->REQ->get('revisit', false),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // and whether or not to generate a reg form for this request
-        $this->checkout->generate_reg_form = filter_var(
-            EE_Registry::instance()->REQ->get('generate_reg_form', true),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // and whether or not to process a reg form submission for this request
-        $this->checkout->process_form_submission = filter_var(
-            EE_Registry::instance()->REQ->get(
-                'process_form_submission',
-                $this->checkout->action === 'process_reg_step'
-            ),
-            FILTER_VALIDATE_BOOLEAN
-        );
-        $this->checkout->process_form_submission = filter_var(
-            $this->checkout->action !== 'display_spco_reg_step'
-                ? $this->checkout->process_form_submission
-                : false,
-            FILTER_VALIDATE_BOOLEAN
-        );
-        // $this->_display_request_vars();
-    }
-
-
-
-    /**
-     *  _display_request_vars
-     *
-     * @access    protected
-     * @return    void
-     */
-    protected function _display_request_vars()
-    {
-        if ( ! WP_DEBUG) {
-            return;
-        }
-        EEH_Debug_Tools::printr($_REQUEST, '$_REQUEST', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->step, '$this->checkout->step', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->edit_step, '$this->checkout->edit_step', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->action, '$this->checkout->action', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->reg_url_link, '$this->checkout->reg_url_link', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->revisit, '$this->checkout->revisit', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->generate_reg_form, '$this->checkout->generate_reg_form', __FILE__, __LINE__);
-        EEH_Debug_Tools::printr($this->checkout->process_form_submission, '$this->checkout->process_form_submission', __FILE__, __LINE__);
-    }
-
-
-
-    /**
-     * _block_bots
-     * checks that the incoming request has either of the following set:
-     *  a uts (unix timestamp) which indicates that the request was redirected from the Ticket Selector
-     *  a REG URL Link, which indicates that the request is a return visit to SPCO for a valid TXN
-     * so if you're not coming from the Ticket Selector nor returning for a valid IP...
-     * then where you coming from man?
-     *
-     * @return boolean
-     */
-    private function _block_bots()
-    {
-        $invalid_checkout_access = \EED_Invalid_Checkout_Access::getInvalidCheckoutAccess();
-        if ($invalid_checkout_access->checkoutAccessIsInvalid($this->checkout)) {
-            return true;
-        }
-        return false;
-    }
-
-
-
-    /**
-     *    _get_first_step
-     *  gets slug for first step in $_reg_steps_array
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    string
-     */
-    private function _get_first_step()
-    {
-        $first_step = reset(EED_Single_Page_Checkout::$_reg_steps_array);
-        return isset($first_step['slug']) ? $first_step['slug'] : 'attendee_information';
-    }
-
-
-
-    /**
-     *    _load_and_instantiate_reg_steps
-     *  instantiates each reg step based on the loaded reg_steps array
-     *
-     * @access    private
-     * @throws EE_Error
-     * @return    bool
-     */
-    private function _load_and_instantiate_reg_steps()
-    {
-        // have reg_steps already been instantiated ?
-        if (
-            empty($this->checkout->reg_steps)
-            || apply_filters('FHEE__Single_Page_Checkout__load_reg_steps__reload_reg_steps', false, $this->checkout)
-        ) {
-            // if not, then loop through raw reg steps array
-            foreach (EED_Single_Page_Checkout::$_reg_steps_array as $order => $reg_step) {
-                if ( ! $this->_load_and_instantiate_reg_step($reg_step, $order)) {
-                    return false;
-                }
-            }
-            EE_Registry::instance()->CFG->registration->skip_reg_confirmation = true;
-            EE_Registry::instance()->CFG->registration->reg_confirmation_last = true;
-            // skip the registration_confirmation page ?
-            if (EE_Registry::instance()->CFG->registration->skip_reg_confirmation) {
-                // just remove it from the reg steps array
-                $this->checkout->remove_reg_step('registration_confirmation', false);
-            } else if (
-                isset($this->checkout->reg_steps['registration_confirmation'])
-                && EE_Registry::instance()->CFG->registration->reg_confirmation_last
-            ) {
-                // set the order to something big like 100
-                $this->checkout->set_reg_step_order('registration_confirmation', 100);
-            }
-            // filter the array for good luck
-            $this->checkout->reg_steps = apply_filters(
-                'FHEE__Single_Page_Checkout__load_reg_steps__reg_steps',
-                $this->checkout->reg_steps
-            );
-            // finally re-sort based on the reg step class order properties
-            $this->checkout->sort_reg_steps();
-        } else {
-            foreach ($this->checkout->reg_steps as $reg_step) {
-                // set all current step stati to FALSE
-                $reg_step->set_is_current_step(false);
-            }
-        }
-        if (empty($this->checkout->reg_steps)) {
-            EE_Error::add_error(__('No Reg Steps were loaded..', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        // make reg step details available to JS
-        $this->checkout->set_reg_step_JSON_info();
-        return true;
-    }
-
-
-
-    /**
-     *     _load_and_instantiate_reg_step
-     *
-     * @access    private
-     * @param array $reg_step
-     * @param int   $order
-     * @return bool
-     */
-    private function _load_and_instantiate_reg_step($reg_step = array(), $order = 0)
-    {
-        // we need a file_path, class_name, and slug to add a reg step
-        if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
-            // if editing a specific step, but this is NOT that step... (and it's not the 'finalize_registration' step)
-            if (
-                $this->checkout->reg_url_link
-                && $this->checkout->step !== $reg_step['slug']
-                && $reg_step['slug'] !== 'finalize_registration'
-            ) {
-                return true;
-            }
-            // instantiate step class using file path and class name
-            $reg_step_obj = EE_Registry::instance()->load_file(
-                $reg_step['file_path'],
-                $reg_step['class_name'],
-                'class',
-                $this->checkout,
-                false
-            );
-            // did we gets the goods ?
-            if ($reg_step_obj instanceof EE_SPCO_Reg_Step) {
-                // set reg step order based on config
-                $reg_step_obj->set_order($order);
-                // add instantiated reg step object to the master reg steps array
-                $this->checkout->add_reg_step($reg_step_obj);
-            } else {
-                EE_Error::add_error(
-                    __('The current step could not be set.', 'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-                return false;
-            }
-        } else {
-            if (WP_DEBUG) {
-                EE_Error::add_error(
-                    sprintf(
-                        __('A registration step could not be loaded. One or more of the following data points is invalid:%4$s%5$sFile Path: %1$s%6$s%5$sClass Name: %2$s%6$s%5$sSlug: %3$s%6$s%7$s', 'event_espresso'),
-                        isset($reg_step['file_path']) ? $reg_step['file_path'] : '',
-                        isset($reg_step['class_name']) ? $reg_step['class_name'] : '',
-                        isset($reg_step['slug']) ? $reg_step['slug'] : '',
-                        '<ul>',
-                        '<li>',
-                        '</li>',
-                        '</ul>'
-                    ),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-            }
-            return false;
-        }
-        return true;
-    }
-
-
-
-    /**
-     * _verify_transaction_and_get_registrations
-     *
-     * @access private
-     * @return bool
-     */
-    private function _verify_transaction_and_get_registrations()
-    {
-        // was there already a valid transaction in the checkout from the session ?
-        if ( ! $this->checkout->transaction instanceof EE_Transaction) {
-            // get transaction from db or session
-            $this->checkout->transaction = $this->checkout->reg_url_link && ! is_admin()
-                ? $this->_get_transaction_and_cart_for_previous_visit()
-                : $this->_get_cart_for_current_session_and_setup_new_transaction();
-            if ( ! $this->checkout->transaction instanceof EE_Transaction) {
-                EE_Error::add_error(
-                    __('Your Registration and Transaction information could not be retrieved from the db.',
-                        'event_espresso'),
-                    __FILE__, __FUNCTION__, __LINE__
-                );
-                $this->checkout->transaction = EE_Transaction::new_instance();
-                // add some style and make it dance
-                $this->add_styles_and_scripts();
-                EED_Single_Page_Checkout::$_initialized = true;
-                return false;
-            }
-            // and the registrations for the transaction
-            $this->_get_registrations($this->checkout->transaction);
-        }
-        return true;
-    }
-
-
-
-    /**
-     * _get_transaction_and_cart_for_previous_visit
-     *
-     * @access private
-     * @return mixed EE_Transaction|NULL
-     */
-    private function _get_transaction_and_cart_for_previous_visit()
-    {
-        /** @var $TXN_model EEM_Transaction */
-        $TXN_model = EE_Registry::instance()->load_model('Transaction');
-        // because the reg_url_link is present in the request, this is a return visit to SPCO, so we'll get the transaction data from the db
-        $transaction = $TXN_model->get_transaction_from_reg_url_link($this->checkout->reg_url_link);
-        // verify transaction
-        if ($transaction instanceof EE_Transaction) {
-            // and get the cart that was used for that transaction
-            $this->checkout->cart = $this->_get_cart_for_transaction($transaction);
-            return $transaction;
-        } else {
-            EE_Error::add_error(__('Your Registration and Transaction information could not be retrieved from the db.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-            return null;
-        }
-    }
-
-
-
-    /**
-     * _get_cart_for_transaction
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return EE_Cart
-     */
-    private function _get_cart_for_transaction($transaction)
-    {
-        return $this->checkout->get_cart_for_transaction($transaction);
-    }
-
-
-
-    /**
-     * get_cart_for_transaction
-     *
-     * @access public
-     * @param EE_Transaction $transaction
-     * @return EE_Cart
-     */
-    public function get_cart_for_transaction(EE_Transaction $transaction)
-    {
-        return $this->checkout->get_cart_for_transaction($transaction);
-    }
-
-
-
-    /**
-     * _get_transaction_and_cart_for_current_session
-     *    generates a new EE_Transaction object and adds it to the $_transaction property.
-     *
-     * @access private
-     * @return EE_Transaction
-     * @throws \EE_Error
-     */
-    private function _get_cart_for_current_session_and_setup_new_transaction()
-    {
-        //  if there's no transaction, then this is the FIRST visit to SPCO
-        // so load up the cart ( passing nothing for the TXN because it doesn't exist yet )
-        $this->checkout->cart = $this->_get_cart_for_transaction(null);
-        // and then create a new transaction
-        $transaction = $this->_initialize_transaction();
-        // verify transaction
-        if ($transaction instanceof EE_Transaction) {
-            // save it so that we have an ID for other objects to use
-            $transaction->save();
-            // and save TXN data to the cart
-            $this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn($transaction->ID());
-        } else {
-            EE_Error::add_error(__('A Valid Transaction could not be initialized.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
-        }
-        return $transaction;
-    }
-
-
-
-    /**
-     *    generates a new EE_Transaction object and adds it to the $_transaction property.
-     *
-     * @access private
-     * @return mixed EE_Transaction|NULL
-     */
-    private function _initialize_transaction()
-    {
-        try {
-            // ensure cart totals have been calculated
-            $this->checkout->cart->get_grand_total()->recalculate_total_including_taxes();
-            // grab the cart grand total
-            $cart_total = $this->checkout->cart->get_cart_grand_total();
-            // create new TXN
-            $transaction = EE_Transaction::new_instance(
-                array(
-                    'TXN_reg_steps' => $this->checkout->initialize_txn_reg_steps_array(),
-                    'TXN_total'     => $cart_total > 0 ? $cart_total : 0,
-                    'TXN_paid'      => 0,
-                    'STS_ID'        => EEM_Transaction::failed_status_code,
-                )
-            );
-            // save it so that we have an ID for other objects to use
-            $transaction->save();
-            // set cron job for following up on TXNs after their session has expired
-            EE_Cron_Tasks::schedule_expired_transaction_check(
-                EE_Registry::instance()->SSN->expiration() + 1,
-                $transaction->ID()
-            );
-            return $transaction;
-        } catch (Exception $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-        }
-        return null;
-    }
-
-
-
-    /**
-     * _get_registrations
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return void
-     * @throws \EventEspresso\core\exceptions\InvalidEntityException
-     * @throws \EE_Error
-     */
-    private function _get_registrations(EE_Transaction $transaction)
-    {
-        // first step: grab the registrants  { : o
-        $registrations = $transaction->registrations($this->checkout->reg_cache_where_params, true);
-        // verify registrations have been set
-        if (empty($registrations)) {
-            // if no cached registrations, then check the db
-            $registrations = $transaction->registrations($this->checkout->reg_cache_where_params, false);
-            // still nothing ? well as long as this isn't a revisit
-            if (empty($registrations) && ! $this->checkout->revisit) {
-                // generate new registrations from scratch
-                $registrations = $this->_initialize_registrations($transaction);
-            }
-        }
-        // sort by their original registration order
-        usort($registrations, array('EED_Single_Page_Checkout', 'sort_registrations_by_REG_count'));
-        // then loop thru the array
-        foreach ($registrations as $registration) {
-            // verify each registration
-            if ($registration instanceof EE_Registration) {
-                // we display all attendee info for the primary registrant
-                if ($this->checkout->reg_url_link === $registration->reg_url_link()
-                    && $registration->is_primary_registrant()
-                ) {
-                    $this->checkout->primary_revisit = true;
-                    break;
-                } else if ($this->checkout->revisit
-                           && $this->checkout->reg_url_link !== $registration->reg_url_link()
-                ) {
-                    // but hide info if it doesn't belong to you
-                    $transaction->clear_cache('Registration', $registration->ID());
-                }
-                $this->checkout->set_reg_status_updated($registration->ID(), false);
-            }
-        }
-    }
-
-
-
-    /**
-     *    adds related EE_Registration objects for each ticket in the cart to the current EE_Transaction object
-     *
-     * @access private
-     * @param EE_Transaction $transaction
-     * @return    array
-     * @throws \EventEspresso\core\exceptions\InvalidEntityException
-     * @throws \EE_Error
-     */
-    private function _initialize_registrations(EE_Transaction $transaction)
-    {
-        $att_nmbr = 0;
-        $registrations = array();
-        if ($transaction instanceof EE_Transaction) {
-            /** @type EE_Registration_Processor $registration_processor */
-            $registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
-            $this->checkout->total_ticket_count = $this->checkout->cart->all_ticket_quantity_count();
-            // now let's add the cart items to the $transaction
-            foreach ($this->checkout->cart->get_tickets() as $line_item) {
-                //do the following for each ticket of this type they selected
-                for ($x = 1; $x <= $line_item->quantity(); $x++) {
-                    $att_nmbr++;
-                    /** @var EventEspresso\core\services\commands\registration\CreateRegistrationCommand $CreateRegistrationCommand */
-                    $CreateRegistrationCommand = EE_Registry::instance()
-                                                            ->create(
-                                                                'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
-                                                                array(
-                                                                    $transaction,
-                                                                    $line_item,
-                                                                    $att_nmbr,
-                                                                    $this->checkout->total_ticket_count,
-                                                                )
-                                                            );
-                    // override capabilities for frontend registrations
-                    if ( ! is_admin()) {
-                        $CreateRegistrationCommand->setCapCheck(
-                            new PublicCapabilities('', 'create_new_registration')
-                        );
-                    }
-                    $registration = EE_Registry::instance()->BUS->execute($CreateRegistrationCommand);
-                    if ( ! $registration instanceof EE_Registration) {
-                        throw new InvalidEntityException($registration, 'EE_Registration');
-                    }
-                    $registrations[ $registration->ID() ] = $registration;
-                }
-            }
-            $registration_processor->fix_reg_final_price_rounding_issue($transaction);
-        }
-        return $registrations;
-    }
-
-
-
-    /**
-     * sorts registrations by REG_count
-     *
-     * @access public
-     * @param EE_Registration $reg_A
-     * @param EE_Registration $reg_B
-     * @return int
-     */
-    public static function sort_registrations_by_REG_count(EE_Registration $reg_A, EE_Registration $reg_B)
-    {
-        // this shouldn't ever happen within the same TXN, but oh well
-        if ($reg_A->count() === $reg_B->count()) {
-            return 0;
-        }
-        return ($reg_A->count() > $reg_B->count()) ? 1 : -1;
-    }
-
-
-
-    /**
-     *    _final_verifications
-     * just makes sure that everything is set up correctly before proceeding
-     *
-     * @access    private
-     * @return    bool
-     * @throws \EE_Error
-     */
-    private function _final_verifications()
-    {
-        // filter checkout
-        $this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___final_verifications__checkout', $this->checkout);
-        //verify that current step is still set correctly
-        if ( ! $this->checkout->current_step instanceof EE_SPCO_Reg_Step) {
-            EE_Error::add_error(
-                __('We\'re sorry but the registration process can not proceed because one or more registration steps were not setup correctly. Please refresh the page and try again or contact support.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-        // if returning to SPCO, then verify that primary registrant is set
-        if ( ! empty($this->checkout->reg_url_link)) {
-            $valid_registrant = $this->checkout->transaction->primary_registration();
-            if ( ! $valid_registrant instanceof EE_Registration) {
-                EE_Error::add_error(
-                    __('We\'re sorry but there appears to be an error with the "reg_url_link" or the primary registrant for this transaction. Please refresh the page and try again or contact support.', 'event_espresso'),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-            $valid_registrant = null;
-            foreach ($this->checkout->transaction->registrations($this->checkout->reg_cache_where_params) as $registration) {
-                if (
-                    $registration instanceof EE_Registration
-                    && $registration->reg_url_link() === $this->checkout->reg_url_link
-                ) {
-                    $valid_registrant = $registration;
-                }
-            }
-            if ( ! $valid_registrant instanceof EE_Registration) {
-                // hmmm... maybe we have the wrong session because the user is opening multiple tabs ?
-                if (EED_Single_Page_Checkout::$_checkout_verified) {
-                    // clear the session, mark the checkout as unverified, and try again
-                    EE_Registry::instance()->SSN->clear_session();
-                    EED_Single_Page_Checkout::$_initialized = false;
-                    EED_Single_Page_Checkout::$_checkout_verified = false;
-                    $this->_initialize();
-                    EE_Error::reset_notices();
-                    return false;
-                }
-                EE_Error::add_error(
-                    __('We\'re sorry but there appears to be an error with the "reg_url_link" or the transaction itself. Please refresh the page and try again or contact support.', 'event_espresso'),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-                return false;
-            }
-        }
-        // now that things have been kinda sufficiently verified,
-        // let's add the checkout to the session so that's available other systems
-        EE_Registry::instance()->SSN->set_checkout($this->checkout);
-        return true;
-    }
-
-
-
-    /**
-     *    _initialize_reg_steps
-     * first makes sure that EE_Transaction_Processor::set_reg_step_initiated() is called as required
-     * then loops thru all of the active reg steps and calls the initialize_reg_step() method
-     *
-     * @access    private
-     * @param bool $reinitializing
-     * @throws \EE_Error
-     */
-    private function _initialize_reg_steps($reinitializing = false)
-    {
-        $this->checkout->set_reg_step_initiated($this->checkout->current_step);
-        // loop thru all steps to call their individual "initialize" methods and set i18n strings for JS
-        foreach ($this->checkout->reg_steps as $reg_step) {
-            if ( ! $reg_step->initialize_reg_step()) {
-                // if not initialized then maybe this step is being removed...
-                if ( ! $reinitializing && $reg_step->is_current_step()) {
-                    // if it was the current step, then we need to start over here
-                    $this->_initialize_reg_steps(true);
-                    return;
-                }
-                continue;
-            }
-            // add css and JS for current step
-            $reg_step->enqueue_styles_and_scripts();
-            // i18n
-            $reg_step->translate_js_strings();
-            if ($reg_step->is_current_step()) {
-                // the text that appears on the reg step form submit button
-                $reg_step->set_submit_button_text();
-            }
-        }
-        // dynamically creates hook point like: AHEE__Single_Page_Checkout___initialize_reg_step__attendee_information
-        do_action("AHEE__Single_Page_Checkout___initialize_reg_step__{$this->checkout->current_step->slug()}", $this->checkout->current_step);
-    }
-
-
-
-    /**
-     * _check_form_submission
-     *
-     * @access private
-     * @return boolean
-     */
-    private function _check_form_submission()
-    {
-        //does this request require the reg form to be generated ?
-        if ($this->checkout->generate_reg_form) {
-            // ever heard that song by Blue Rodeo ?
-            try {
-                $this->checkout->current_step->reg_form = $this->checkout->current_step->generate_reg_form();
-                // if not displaying a form, then check for form submission
-                if (
-                    $this->checkout->process_form_submission
-                    && $this->checkout->current_step->reg_form->was_submitted()
-                ) {
-                    // clear out any old data in case this step is being run again
-                    $this->checkout->current_step->set_valid_data(array());
-                    // capture submitted form data
-                    $this->checkout->current_step->reg_form->receive_form_submission(
-                        apply_filters('FHEE__Single_Page_Checkout___check_form_submission__request_params', EE_Registry::instance()->REQ->params(), $this->checkout)
-                    );
-                    // validate submitted form data
-                    if ( ! $this->checkout->continue_reg || ! $this->checkout->current_step->reg_form->is_valid()) {
-                        // thou shall not pass !!!
-                        $this->checkout->continue_reg = false;
-                        // any form validation errors?
-                        if ($this->checkout->current_step->reg_form->submission_error_message() !== '') {
-                            $submission_error_messages = array();
-                            // bad, bad, bad registrant
-                            foreach ($this->checkout->current_step->reg_form->get_validation_errors_accumulated() as $validation_error) {
-                                if ($validation_error instanceof EE_Validation_Error) {
-                                    $submission_error_messages[] = sprintf(
-                                        __('%s : %s', 'event_espresso'),
-                                        $validation_error->get_form_section()->html_label_text(),
-                                        $validation_error->getMessage()
-                                    );
-                                }
-                            }
-                            EE_Error::add_error(implode('<br />', $submission_error_messages), __FILE__, __FUNCTION__, __LINE__);
-                        }
-                        // well not really... what will happen is we'll just get redirected back to redo the current step
-                        $this->go_to_next_step();
-                        return false;
-                    }
-                }
-            } catch (EE_Error $e) {
-                $e->get_error();
-            }
-        }
-        return true;
-    }
-
-
-
-    /**
-     * _process_action
-     *
-     * @access private
-     * @return void
-     * @throws \EE_Error
-     */
-    private function _process_form_action()
-    {
-        // what cha wanna do?
-        switch ($this->checkout->action) {
-            // AJAX next step reg form
-            case 'display_spco_reg_step' :
-                $this->checkout->redirect = false;
-                if (EE_Registry::instance()->REQ->ajax) {
-                    $this->checkout->json_response->set_reg_step_html($this->checkout->current_step->display_reg_form());
-                }
-                break;
-            default :
-                // meh... do one of those other steps first
-                if ( ! empty($this->checkout->action) && is_callable(array($this->checkout->current_step, $this->checkout->action))) {
-                    // dynamically creates hook point like: AHEE__Single_Page_Checkout__before_attendee_information__process_reg_step
-                    do_action("AHEE__Single_Page_Checkout__before_{$this->checkout->current_step->slug()}__{$this->checkout->action}", $this->checkout->current_step);
-                    // call action on current step
-                    if (call_user_func(array($this->checkout->current_step, $this->checkout->action))) {
-                        // good registrant, you get to proceed
-                        if (
-                            $this->checkout->current_step->success_message() !== ''
-                            && apply_filters(
-                                'FHEE__Single_Page_Checkout___process_form_action__display_success',
-                                false
-                            )
-                        ) {
-                            EE_Error::add_success(
-                                $this->checkout->current_step->success_message()
-                                . '<br />' . $this->checkout->next_step->_instructions()
-                            );
-                        }
-                        // pack it up, pack it in...
-                        $this->_setup_redirect();
-                    }
-                    // dynamically creates hook point like: AHEE__Single_Page_Checkout__after_payment_options__process_reg_step
-                    do_action("AHEE__Single_Page_Checkout__after_{$this->checkout->current_step->slug()}__{$this->checkout->action}", $this->checkout->current_step);
-                } else {
-                    EE_Error::add_error(
-                        sprintf(
-                            __('The requested form action "%s" does not exist for the current "%s" registration step.', 'event_espresso'),
-                            $this->checkout->action,
-                            $this->checkout->current_step->name()
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-                }
-            // end default
-        }
-        // store our progress so far
-        $this->checkout->stash_transaction_and_checkout();
-        // advance to the next step! If you pass GO, collect $200
-        $this->go_to_next_step();
-    }
-
-
-
-    /**
-     *        add_styles_and_scripts
-     *
-     * @access        public
-     * @return        void
-     */
-    public function add_styles_and_scripts()
-    {
-        // i18n
-        $this->translate_js_strings();
-        if ($this->checkout->admin_request) {
-            add_action('admin_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
-        } else {
-            add_action('wp_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
-        }
-    }
-
-
-
-    /**
-     *        translate_js_strings
-     *
-     * @access        public
-     * @return        void
-     */
-    public function translate_js_strings()
-    {
-        EE_Registry::$i18n_js_strings['revisit'] = $this->checkout->revisit;
-        EE_Registry::$i18n_js_strings['e_reg_url_link'] = $this->checkout->reg_url_link;
-        EE_Registry::$i18n_js_strings['server_error'] = __('An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['invalid_json_response'] = __('An invalid response was returned from the server while attempting to process your request. Please refresh the page and try again or contact support.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['validation_error'] = __('There appears to be a problem with the form validation configuration! Please check the admin settings or contact support.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['invalid_payment_method'] = __('There appears to be a problem with the payment method configuration! Please refresh the page and try again or contact support.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['reg_step_error'] = __('This registration step could not be completed. Please refresh the page and try again.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['invalid_coupon'] = __('We\'re sorry but that coupon code does not appear to be valid. If this is incorrect, please contact the site administrator.', 'event_espresso');
-        EE_Registry::$i18n_js_strings['process_registration'] = sprintf(
-            __('Please wait while we process your registration.%sDo not refresh the page or navigate away while this is happening.%sThank you for your patience.', 'event_espresso'),
-            '<br/>',
-            '<br/>'
-        );
-        EE_Registry::$i18n_js_strings['language'] = get_bloginfo('language');
-        EE_Registry::$i18n_js_strings['EESID'] = EE_Registry::instance()->SSN->id();
-        EE_Registry::$i18n_js_strings['currency'] = EE_Registry::instance()->CFG->currency;
-        EE_Registry::$i18n_js_strings['datepicker_yearRange'] = '-150:+20';
-        EE_Registry::$i18n_js_strings['timer_years'] = __('years', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_months'] = __('months', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_weeks'] = __('weeks', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_days'] = __('days', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_hours'] = __('hours', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_minutes'] = __('minutes', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_seconds'] = __('seconds', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_year'] = __('year', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_month'] = __('month', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_week'] = __('week', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_day'] = __('day', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_hour'] = __('hour', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_minute'] = __('minute', 'event_espresso');
-        EE_Registry::$i18n_js_strings['timer_second'] = __('second', 'event_espresso');
-        EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
-            __(
-                '%1$sWe\'re sorry, but your registration time has expired.%2$s%3$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
-                'event_espresso'
-            ),
-            '<h4 class="important-notice">',
-            '</h4>',
-            '<br />',
-            '<p>',
-            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
-            '">',
-            '</a>',
-            '</p>'
-        );
-        EE_Registry::$i18n_js_strings['ajax_submit'] = apply_filters('FHEE__Single_Page_Checkout__translate_js_strings__ajax_submit', true);
-        EE_Registry::$i18n_js_strings['session_extension'] = absint(
-            apply_filters('FHEE__EE_Session__extend_expiration__seconds_added', 10 * MINUTE_IN_SECONDS)
-        );
-        EE_Registry::$i18n_js_strings['session_expiration'] = gmdate(
-            'M d, Y H:i:s', EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)
-        );
-    }
-
-
-
-    /**
-     *    enqueue_styles_and_scripts
-     *
-     * @access        public
-     * @return        void
-     * @throws \EE_Error
-     */
-    public function enqueue_styles_and_scripts()
-    {
-        // load css
-        wp_register_style('single_page_checkout', SPCO_CSS_URL . 'single_page_checkout.css', array(), EVENT_ESPRESSO_VERSION);
-        wp_enqueue_style('single_page_checkout');
-        // load JS
-        wp_register_script('jquery_plugin', EE_THIRD_PARTY_URL . 'jquery	.plugin.min.js', array('jquery'), '1.0.1', true);
-        wp_register_script('jquery_countdown', EE_THIRD_PARTY_URL . 'jquery	.countdown.min.js', array('jquery_plugin'), '2.0.2', true);
-        wp_register_script('single_page_checkout', SPCO_JS_URL . 'single_page_checkout.js', array('espresso_core', 'underscore', 'ee_form_section_validation', 'jquery_countdown'), EVENT_ESPRESSO_VERSION, true);
-        if ($this->checkout->registration_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->registration_form->enqueue_js();
-        }
-        if ($this->checkout->current_step->reg_form instanceof EE_Form_Section_Proper) {
-            $this->checkout->current_step->reg_form->enqueue_js();
-        }
-        wp_enqueue_script('single_page_checkout');
-        /**
-         * global action hook for enqueueing styles and scripts with
-         * spco calls.
-         */
-        do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts', $this);
-        /**
-         * dynamic action hook for enqueueing styles and scripts with spco calls.
-         * The hook will end up being something like AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__attendee_information
-         */
-        do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__' . $this->checkout->current_step->slug(), $this);
-    }
-
-
-
-    /**
-     *    display the Registration Single Page Checkout Form
-     *
-     * @access    private
-     * @return    void
-     * @throws \EE_Error
-     */
-    private function _display_spco_reg_form()
-    {
-        // if registering via the admin, just display the reg form for the current step
-        if ($this->checkout->admin_request) {
-            EE_Registry::instance()->REQ->add_output($this->checkout->current_step->display_reg_form());
-        } else {
-            // add powered by EE msg
-            add_action('AHEE__SPCO__reg_form_footer', array('EED_Single_Page_Checkout', 'display_registration_footer'));
-            $empty_cart = count($this->checkout->transaction->registrations($this->checkout->reg_cache_where_params)) < 1
-                ? true
-                : false;
-            EE_Registry::$i18n_js_strings['empty_cart'] = $empty_cart;
-            $cookies_not_set_msg = '';
-            if ($empty_cart && ! isset($_COOKIE['ee_cookie_test'])) {
-                $cookies_not_set_msg = apply_filters(
-                    'FHEE__Single_Page_Checkout__display_spco_reg_form__cookies_not_set_msg',
-                    sprintf(
-                        __(
-                            '%1$s%3$sIt appears your browser is not currently set to accept Cookies%4$s%5$sIn order to register for events, you need to enable cookies.%7$sIf you require assistance, then click the following link to learn how to %8$senable cookies%9$s%6$s%2$s',
-                            'event_espresso'
-                        ),
-                        '<div class="ee-attention">',
-                        '</div>',
-                        '<h6 class="important-notice">',
-                        '</h6>',
-                        '<p>',
-                        '</p>',
-                        '<br />',
-                        '<a href="http://www.whatarecookies.com/enable.asp" target="_blank">',
-                        '</a>'
-                    )
-                );
-            }
-            $this->checkout->registration_form = new EE_Form_Section_Proper(
-                array(
-                    'name'            => 'single-page-checkout',
-                    'html_id'         => 'ee-single-page-checkout-dv',
-                    'layout_strategy' =>
-                        new EE_Template_Layout(
-                            array(
-                                'layout_template_file' => SPCO_TEMPLATES_PATH . 'registration_page_wrapper.template.php',
-                                'template_args'        => array(
-                                    'empty_cart'              => $empty_cart,
-                                    'revisit'                 => $this->checkout->revisit,
-                                    'reg_steps'               => $this->checkout->reg_steps,
-                                    'next_step'               => $this->checkout->next_step instanceof EE_SPCO_Reg_Step
-                                        ? $this->checkout->next_step->slug()
-                                        : '',
-                                    'cancel_page_url'         => $this->checkout->cancel_page_url,
-                                    'empty_msg'               => apply_filters(
-                                        'FHEE__Single_Page_Checkout__display_spco_reg_form__empty_msg',
-                                        sprintf(
-                                            __('You need to %1$sReturn to Events list%2$sselect at least one event%3$s before you can proceed with the registration process.',
-                                                'event_espresso'),
-                                            '<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
-                                            '">',
-                                            '</a>'
-                                        )
-                                    ),
-                                    'cookies_not_set_msg'     => $cookies_not_set_msg,
-                                    'registration_time_limit' => $this->checkout->get_registration_time_limit(),
-                                    'session_expiration'      =>
-                                        date('M d, Y H:i:s', EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)),
-                                ),
-                            )
-                        ),
-                )
-            );
-            // load template and add to output sent that gets filtered into the_content()
-            EE_Registry::instance()->REQ->add_output($this->checkout->registration_form->get_html());
-        }
-    }
-
-
-
-    /**
-     *    add_extra_finalize_registration_inputs
-     *
-     * @access    public
-     * @param $next_step
-     * @internal  param string $label
-     * @return void
-     */
-    public function add_extra_finalize_registration_inputs($next_step)
-    {
-        if ($next_step === 'finalize_registration') {
-            echo '<div id="spco-extra-finalize_registration-inputs-dv"></div>';
-        }
-    }
-
-
-
-    /**
-     *    display_registration_footer
-     *
-     * @access    public
-     * @return    string
-     */
-    public static function display_registration_footer()
-    {
-        if (
-        apply_filters(
-            'FHEE__EE_Front__Controller__show_reg_footer',
-            EE_Registry::instance()->CFG->admin->show_reg_footer
-        )
-        ) {
-            add_filter(
-                'FHEE__EEH_Template__powered_by_event_espresso__url',
-                function ($url) {
-                    return apply_filters('FHEE__EE_Front_Controller__registration_footer__url', $url);
-                }
-            );
-            echo apply_filters(
-                'FHEE__EE_Front_Controller__display_registration_footer',
-                \EEH_Template::powered_by_event_espresso(
-                    '',
-                    'espresso-registration-footer-dv',
-                    array('utm_content' => 'registration_checkout')
-                )
-            );
-        }
-        return '';
-    }
-
-
-
-    /**
-     *    unlock_transaction
-     *
-     * @access    public
-     * @return    void
-     * @throws \EE_Error
-     */
-    public function unlock_transaction()
-    {
-        if ($this->checkout->transaction instanceof EE_Transaction) {
-            $this->checkout->transaction->unlock();
-        }
-    }
-
-
-
-    /**
-     *        _setup_redirect
-     *
-     * @access    private
-     * @return void
-     */
-    private function _setup_redirect()
-    {
-        if ($this->checkout->continue_reg && $this->checkout->next_step instanceof EE_SPCO_Reg_Step) {
-            $this->checkout->redirect = true;
-            if (empty($this->checkout->redirect_url)) {
-                $this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
-            }
-            $this->checkout->redirect_url = apply_filters(
-                'FHEE__EED_Single_Page_Checkout___setup_redirect__checkout_redirect_url',
-                $this->checkout->redirect_url,
-                $this->checkout
-            );
-        }
-    }
-
-
-
-    /**
-     *   handle ajax message responses and redirects
-     *
-     * @access public
-     * @return void
-     * @throws \EE_Error
-     */
-    public function go_to_next_step()
-    {
-        if (EE_Registry::instance()->REQ->ajax) {
-            // capture contents of output buffer we started earlier in the request, and insert into JSON response
-            $this->checkout->json_response->set_unexpected_errors(ob_get_clean());
-        }
-        $this->unlock_transaction();
-        // just return for these conditions
-        if (
-            $this->checkout->admin_request
-            || $this->checkout->action === 'redirect_form'
-            || $this->checkout->action === 'update_checkout'
-        ) {
-            return;
-        }
-        // AJAX response
-        $this->_handle_json_response();
-        // redirect to next step or the Thank You page
-        $this->_handle_html_redirects();
-        // hmmm... must be something wrong, so let's just display the form again !
-        $this->_display_spco_reg_form();
-    }
-
-
-
-    /**
-     *   _handle_json_response
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _handle_json_response()
-    {
-        // if this is an ajax request
-        if (EE_Registry::instance()->REQ->ajax) {
-            // DEBUG LOG
-            //$this->checkout->log(
-            //	__CLASS__, __FUNCTION__, __LINE__,
-            //	array(
-            //		'json_response_redirect_url' => $this->checkout->json_response->redirect_url(),
-            //		'redirect'                   => $this->checkout->redirect,
-            //		'continue_reg'               => $this->checkout->continue_reg,
-            //	)
-            //);
-            $this->checkout->json_response->set_registration_time_limit(
-                $this->checkout->get_registration_time_limit()
-            );
-            $this->checkout->json_response->set_payment_amount($this->checkout->amount_owing);
-            // just send the ajax (
-            $json_response = apply_filters(
-                'FHEE__EE_Single_Page_Checkout__JSON_response',
-                $this->checkout->json_response
-            );
-            echo $json_response;
-            exit();
-        }
-    }
-
-
-
-    /**
-     *   _handle_redirects
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _handle_html_redirects()
-    {
-        // going somewhere ?
-        if ($this->checkout->redirect && ! empty($this->checkout->redirect_url)) {
-            // store notices in a transient
-            EE_Error::get_notices(false, true, true);
-            // DEBUG LOG
-            //$this->checkout->log(
-            //	__CLASS__, __FUNCTION__, __LINE__,
-            //	array(
-            //		'headers_sent' => headers_sent(),
-            //		'redirect_url'     => $this->checkout->redirect_url,
-            //		'headers_list'    => headers_list(),
-            //	)
-            //);
-            wp_safe_redirect($this->checkout->redirect_url);
-            exit();
-        }
-    }
-
-
-
-    /**
-     *   set_checkout_anchor
-     *
-     * @access public
-     * @return void
-     */
-    public function set_checkout_anchor()
-    {
-        echo '<a id="checkout" style="float: left; margin-left: -999em;"></a>';
-    }
+	/**
+	 * $_initialized - has the SPCO controller already been initialized ?
+	 *
+	 * @access private
+	 * @var bool $_initialized
+	 */
+	private static $_initialized = false;
+
+
+	/**
+	 * $_checkout_verified - is the EE_Checkout verified as correct for this request ?
+	 *
+	 * @access private
+	 * @var bool $_valid_checkout
+	 */
+	private static $_checkout_verified = true;
+
+	/**
+	 *    $_reg_steps_array - holds initial array of reg steps
+	 *
+	 * @access private
+	 * @var array $_reg_steps_array
+	 */
+	private static $_reg_steps_array = array();
+
+	/**
+	 *    $checkout - EE_Checkout object for handling the properties of the current checkout process
+	 *
+	 * @access public
+	 * @var EE_Checkout $checkout
+	 */
+	public $checkout;
+
+
+
+	/**
+	 * @return EED_Single_Page_Checkout
+	 */
+	public static function instance()
+	{
+		add_filter('EED_Single_Page_Checkout__SPCO_active', '__return_true');
+		return parent::get_instance(__CLASS__);
+	}
+
+
+
+	/**
+	 * @return EE_CART
+	 */
+	public function cart()
+	{
+		return $this->checkout->cart;
+	}
+
+
+
+	/**
+	 * @return EE_Transaction
+	 */
+	public function transaction()
+	{
+		return $this->checkout->transaction;
+	}
+
+
+
+	/**
+	 *    set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public static function set_hooks()
+	{
+		EED_Single_Page_Checkout::set_definitions();
+	}
+
+
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public static function set_hooks_admin()
+	{
+		EED_Single_Page_Checkout::set_definitions();
+		if ( ! (defined('DOING_AJAX') && DOING_AJAX)) {
+			// hook into the top of pre_get_posts to set the reg step routing, which gives other modules or plugins a chance to modify the reg steps, but just before the routes get called
+			add_action('pre_get_posts', array('EED_Single_Page_Checkout', 'load_reg_steps'), 1);
+			return;
+		}
+		// going to start an output buffer in case anything gets accidentally output that might disrupt our JSON response
+		ob_start();
+		EED_Single_Page_Checkout::load_request_handler();
+		EED_Single_Page_Checkout::load_reg_steps();
+		// set ajax hooks
+		add_action('wp_ajax_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
+		add_action('wp_ajax_nopriv_process_reg_step', array('EED_Single_Page_Checkout', 'process_reg_step'));
+		add_action('wp_ajax_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
+		add_action('wp_ajax_nopriv_display_spco_reg_step', array('EED_Single_Page_Checkout', 'display_reg_step'));
+		add_action('wp_ajax_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
+		add_action('wp_ajax_nopriv_update_reg_step', array('EED_Single_Page_Checkout', 'update_reg_step'));
+	}
+
+
+
+	/**
+	 *    process ajax request
+	 *
+	 * @param string $ajax_action
+	 * @throws \EE_Error
+	 */
+	public static function process_ajax_request($ajax_action)
+	{
+		EE_Registry::instance()->REQ->set('action', $ajax_action);
+		EED_Single_Page_Checkout::instance()->_initialize();
+	}
+
+
+
+	/**
+	 *    ajax display registration step
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function display_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('display_spco_reg_step');
+	}
+
+
+
+	/**
+	 *    ajax process registration step
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function process_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('process_reg_step');
+	}
+
+
+
+	/**
+	 *    ajax process registration step
+	 *
+	 * @throws \EE_Error
+	 */
+	public static function update_reg_step()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('update_reg_step');
+	}
+
+
+
+	/**
+	 *   update_checkout
+	 *
+	 * @access public
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	public static function update_checkout()
+	{
+		EED_Single_Page_Checkout::process_ajax_request('update_checkout');
+	}
+
+
+
+	/**
+	 *    load_request_handler
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function load_request_handler()
+	{
+		// load core Request_Handler class
+		if ( ! isset(EE_Registry::instance()->REQ)) {
+			EE_Registry::instance()->load_core('Request_Handler');
+		}
+	}
+
+
+
+	/**
+	 *    set_definitions
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public static function set_definitions()
+	{
+		define('SPCO_BASE_PATH', rtrim(str_replace(array('\\', '/'), DS, plugin_dir_path(__FILE__)), DS) . DS);
+		define('SPCO_CSS_URL', plugin_dir_url(__FILE__) . 'css' . DS);
+		define('SPCO_IMG_URL', plugin_dir_url(__FILE__) . 'img' . DS);
+		define('SPCO_JS_URL', plugin_dir_url(__FILE__) . 'js' . DS);
+		define('SPCO_INC_PATH', SPCO_BASE_PATH . 'inc' . DS);
+		define('SPCO_REG_STEPS_PATH', SPCO_BASE_PATH . 'reg_steps' . DS);
+		define('SPCO_TEMPLATES_PATH', SPCO_BASE_PATH . 'templates' . DS);
+		EEH_Autoloader::register_autoloaders_for_each_file_in_folder(SPCO_BASE_PATH, true);
+		EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
+			__('%1$sWe\'re sorry, but you\'re registration time has expired.%2$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
+				'event_espresso'),
+			'<h4 class="important-notice">',
+			'</h4>',
+			'<br />',
+			'<p>',
+			'<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+			'">',
+			'</a>',
+			'</p>'
+		);
+	}
+
+
+
+	/**
+	 * load_reg_steps
+	 * loads and instantiates each reg step based on the EE_Registry::instance()->CFG->registration->reg_steps array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return void
+	 */
+	public static function load_reg_steps()
+	{
+		static $reg_steps_loaded = false;
+		if ($reg_steps_loaded) {
+			return;
+		}
+		// filter list of reg_steps
+		$reg_steps_to_load = (array)apply_filters(
+			'AHEE__SPCO__load_reg_steps__reg_steps_to_load',
+			EED_Single_Page_Checkout::get_reg_steps()
+		);
+		// sort by key (order)
+		ksort($reg_steps_to_load);
+		// loop through folders
+		foreach ($reg_steps_to_load as $order => $reg_step) {
+			// we need a
+			if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
+				// copy over to the reg_steps_array
+				EED_Single_Page_Checkout::$_reg_steps_array[$order] = $reg_step;
+				// register custom key route for each reg step
+				// ie: step=>"slug" - this is the entire reason we load the reg steps array now
+				EE_Config::register_route($reg_step['slug'], 'EED_Single_Page_Checkout', 'run', 'step');
+				// add AJAX or other hooks
+				if (isset($reg_step['has_hooks']) && $reg_step['has_hooks']) {
+					// setup autoloaders if necessary
+					if ( ! class_exists($reg_step['class_name'])) {
+						EEH_Autoloader::register_autoloaders_for_each_file_in_folder($reg_step['file_path'], true);
+					}
+					if (is_callable($reg_step['class_name'], 'set_hooks')) {
+						call_user_func(array($reg_step['class_name'], 'set_hooks'));
+					}
+				}
+			}
+		}
+		$reg_steps_loaded = true;
+	}
+
+
+
+	/**
+	 *    get_reg_steps
+	 *
+	 * @access    public
+	 * @return    array
+	 */
+	public static function get_reg_steps()
+	{
+		$reg_steps = EE_Registry::instance()->CFG->registration->reg_steps;
+		if (empty($reg_steps)) {
+			$reg_steps = array(
+				10  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'attendee_information',
+					'class_name' => 'EE_SPCO_Reg_Step_Attendee_Information',
+					'slug'       => 'attendee_information',
+					'has_hooks'  => false,
+				),
+				20  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'registration_confirmation',
+					'class_name' => 'EE_SPCO_Reg_Step_Registration_Confirmation',
+					'slug'       => 'registration_confirmation',
+					'has_hooks'  => false,
+				),
+				30  => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'payment_options',
+					'class_name' => 'EE_SPCO_Reg_Step_Payment_Options',
+					'slug'       => 'payment_options',
+					'has_hooks'  => true,
+				),
+				999 => array(
+					'file_path'  => SPCO_REG_STEPS_PATH . 'finalize_registration',
+					'class_name' => 'EE_SPCO_Reg_Step_Finalize_Registration',
+					'slug'       => 'finalize_registration',
+					'has_hooks'  => false,
+				),
+			);
+		}
+		return $reg_steps;
+	}
+
+
+
+	/**
+	 *    registration_checkout_for_admin
+	 *
+	 * @access    public
+	 * @return    string
+	 * @throws \EE_Error
+	 */
+	public static function registration_checkout_for_admin()
+	{
+		EED_Single_Page_Checkout::load_reg_steps();
+		EE_Registry::instance()->REQ->set('step', 'attendee_information');
+		EE_Registry::instance()->REQ->set('action', 'display_spco_reg_step');
+		EE_Registry::instance()->REQ->set('process_form_submission', false);
+		EED_Single_Page_Checkout::instance()->_initialize();
+		EED_Single_Page_Checkout::instance()->_display_spco_reg_form();
+		return EE_Registry::instance()->REQ->get_output();
+	}
+
+
+
+	/**
+	 * process_registration_from_admin
+	 *
+	 * @access public
+	 * @return \EE_Transaction
+	 * @throws \EE_Error
+	 */
+	public static function process_registration_from_admin()
+	{
+		EED_Single_Page_Checkout::load_reg_steps();
+		EE_Registry::instance()->REQ->set('step', 'attendee_information');
+		EE_Registry::instance()->REQ->set('action', 'process_reg_step');
+		EE_Registry::instance()->REQ->set('process_form_submission', true);
+		EED_Single_Page_Checkout::instance()->_initialize();
+		if (EED_Single_Page_Checkout::instance()->checkout->current_step->completed()) {
+			$final_reg_step = end(EED_Single_Page_Checkout::instance()->checkout->reg_steps);
+			if ($final_reg_step instanceof EE_SPCO_Reg_Step_Finalize_Registration) {
+				EED_Single_Page_Checkout::instance()->checkout->set_reg_step_initiated($final_reg_step);
+				if ($final_reg_step->process_reg_step()) {
+					$final_reg_step->set_completed();
+					EED_Single_Page_Checkout::instance()->checkout->update_txn_reg_steps_array();
+					return EED_Single_Page_Checkout::instance()->checkout->transaction;
+				}
+			}
+		}
+		return null;
+	}
+
+
+
+	/**
+	 *    run
+	 *
+	 * @access    public
+	 * @param WP_Query $WP_Query
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public function run($WP_Query)
+	{
+		if (
+			$WP_Query instanceof WP_Query
+			&& $WP_Query->is_main_query()
+			&& apply_filters('FHEE__EED_Single_Page_Checkout__run', true)
+			&& $this->_is_reg_checkout()
+		) {
+			$this->_initialize();
+		}
+	}
+
+
+
+	/**
+	 * determines whether current url matches reg page url
+	 *
+	 * @return bool
+	 */
+	protected function _is_reg_checkout()
+	{
+		// get current permalink for reg page without any extra query args
+		$reg_page_url = \get_permalink(EE_Config::instance()->core->reg_page_id);
+		// get request URI for current request, but without the scheme or host
+		$current_request_uri = \EEH_URL::filter_input_server_url('REQUEST_URI');
+		$current_request_uri = html_entity_decode($current_request_uri);
+		// get array of query args from the current request URI
+		$query_args = \EEH_URL::get_query_string($current_request_uri);
+		// grab page id if it is set
+		$page_id = isset($query_args['page_id']) ? absint($query_args['page_id']) : 0;
+		// and remove the page id from the query args (we will re-add it later)
+		unset($query_args['page_id']);
+		// now strip all query args from current request URI
+		$current_request_uri = remove_query_arg(array_keys($query_args), $current_request_uri);
+		// and re-add the page id if it was set
+		if ($page_id) {
+			$current_request_uri = add_query_arg('page_id', $page_id, $current_request_uri);
+		}
+		// remove slashes and ?
+		$current_request_uri = trim($current_request_uri, '?/');
+		// is current request URI part of the known full reg page URL ?
+		return ! empty($current_request_uri) && strpos($reg_page_url, $current_request_uri) !== false;
+	}
+
+
+
+	/**
+	 *    run
+	 *
+	 * @access    public
+	 * @param WP_Query $WP_Query
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public static function init($WP_Query)
+	{
+		EED_Single_Page_Checkout::instance()->run($WP_Query);
+	}
+
+
+
+	/**
+	 *    _initialize - initial module setup
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    void
+	 */
+	private function _initialize()
+	{
+		// ensure SPCO doesn't run twice
+		if (EED_Single_Page_Checkout::$_initialized) {
+			return;
+		}
+		try {
+			$this->_verify_session();
+			// setup the EE_Checkout object
+			$this->checkout = $this->_initialize_checkout();
+			// filter checkout
+			$this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize__checkout', $this->checkout);
+			// get the $_GET
+			$this->_get_request_vars();
+			if ($this->_block_bots()) {
+				return;
+			}
+			// filter continue_reg
+			$this->checkout->continue_reg = apply_filters('FHEE__EED_Single_Page_Checkout__init___continue_reg', true, $this->checkout);
+			// load the reg steps array
+			if ( ! $this->_load_and_instantiate_reg_steps()) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// set the current step
+			$this->checkout->set_current_step($this->checkout->step);
+			// and the next step
+			$this->checkout->set_next_step();
+			// verify that everything has been setup correctly
+			if ( ! ($this->_verify_transaction_and_get_registrations() && $this->_final_verifications())) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// lock the transaction
+			$this->checkout->transaction->lock();
+			// make sure all of our cached objects are added to their respective model entity mappers
+			$this->checkout->refresh_all_entities();
+			// set amount owing
+			$this->checkout->amount_owing = $this->checkout->transaction->remaining();
+			// initialize each reg step, which gives them the chance to potentially alter the process
+			$this->_initialize_reg_steps();
+			// DEBUG LOG
+			//$this->checkout->log( __CLASS__, __FUNCTION__, __LINE__ );
+			// get reg form
+			if( ! $this->_check_form_submission()) {
+				EED_Single_Page_Checkout::$_initialized = true;
+				return;
+			}
+			// checkout the action!!!
+			$this->_process_form_action();
+			// add some style and make it dance
+			$this->add_styles_and_scripts();
+			// kk... SPCO has successfully run
+			EED_Single_Page_Checkout::$_initialized = true;
+			// set no cache headers and constants
+			EE_System::do_not_cache();
+			// add anchor
+			add_action('loop_start', array($this, 'set_checkout_anchor'), 1);
+			// remove transaction lock
+			add_action('shutdown', array($this, 'unlock_transaction'), 1);
+		} catch (Exception $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+
+	/**
+	 *    _verify_session
+	 * checks that the session is valid and not expired
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 */
+	private function _verify_session()
+	{
+		if ( ! EE_Registry::instance()->SSN instanceof EE_Session) {
+			throw new EE_Error(__('The EE_Session class could not be loaded.', 'event_espresso'));
+		}
+		// is session still valid ?
+		if (EE_Registry::instance()->SSN->expired() && EE_Registry::instance()->REQ->get('e_reg_url_link', '') === '') {
+			$this->checkout = new EE_Checkout();
+			EE_Registry::instance()->SSN->reset_cart();
+			EE_Registry::instance()->SSN->reset_checkout();
+			EE_Registry::instance()->SSN->reset_transaction();
+			EE_Error::add_attention(EE_Registry::$i18n_js_strings['registration_expiration_notice'], __FILE__,
+				__FUNCTION__, __LINE__);
+			EE_Registry::instance()->SSN->reset_expired();
+		}
+	}
+
+
+
+	/**
+	 *    _initialize_checkout
+	 * loads and instantiates EE_Checkout
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return EE_Checkout
+	 */
+	private function _initialize_checkout()
+	{
+		// look in session for existing checkout
+		/** @type EE_Checkout $checkout */
+		$checkout = EE_Registry::instance()->SSN->checkout();
+		// verify
+		if ( ! $checkout instanceof EE_Checkout) {
+			// instantiate EE_Checkout object for handling the properties of the current checkout process
+			$checkout = EE_Registry::instance()->load_file(SPCO_INC_PATH, 'EE_Checkout', 'class', array(), false);
+		} else {
+			if ($checkout->current_step->is_final_step() && $checkout->exit_spco() === true) {
+				$this->unlock_transaction();
+				wp_safe_redirect($checkout->redirect_url);
+				exit();
+			}
+		}
+		$checkout = apply_filters('FHEE__EED_Single_Page_Checkout___initialize_checkout__checkout', $checkout);
+		// verify again
+		if ( ! $checkout instanceof EE_Checkout) {
+			throw new EE_Error(__('The EE_Checkout class could not be loaded.', 'event_espresso'));
+		}
+		// reset anything that needs a clean slate for each request
+		$checkout->reset_for_current_request();
+		return $checkout;
+	}
+
+
+
+	/**
+	 *    _get_request_vars
+	 *
+	 * @access    private
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	private function _get_request_vars()
+	{
+		// load classes
+		EED_Single_Page_Checkout::load_request_handler();
+		//make sure this request is marked as belonging to EE
+		EE_Registry::instance()->REQ->set_espresso_page(true);
+		// which step is being requested ?
+		$this->checkout->step = EE_Registry::instance()->REQ->get('step', $this->_get_first_step());
+		// which step is being edited ?
+		$this->checkout->edit_step = EE_Registry::instance()->REQ->get('edit_step', '');
+		// and what we're doing on the current step
+		$this->checkout->action = EE_Registry::instance()->REQ->get('action', 'display_spco_reg_step');
+		// timestamp
+		$this->checkout->uts = EE_Registry::instance()->REQ->get('uts', 0);
+		// returning to edit ?
+		$this->checkout->reg_url_link = EE_Registry::instance()->REQ->get('e_reg_url_link', '');
+		// or some other kind of revisit ?
+		$this->checkout->revisit = filter_var(
+			EE_Registry::instance()->REQ->get('revisit', false),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// and whether or not to generate a reg form for this request
+		$this->checkout->generate_reg_form = filter_var(
+			EE_Registry::instance()->REQ->get('generate_reg_form', true),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// and whether or not to process a reg form submission for this request
+		$this->checkout->process_form_submission = filter_var(
+			EE_Registry::instance()->REQ->get(
+				'process_form_submission',
+				$this->checkout->action === 'process_reg_step'
+			),
+			FILTER_VALIDATE_BOOLEAN
+		);
+		$this->checkout->process_form_submission = filter_var(
+			$this->checkout->action !== 'display_spco_reg_step'
+				? $this->checkout->process_form_submission
+				: false,
+			FILTER_VALIDATE_BOOLEAN
+		);
+		// $this->_display_request_vars();
+	}
+
+
+
+	/**
+	 *  _display_request_vars
+	 *
+	 * @access    protected
+	 * @return    void
+	 */
+	protected function _display_request_vars()
+	{
+		if ( ! WP_DEBUG) {
+			return;
+		}
+		EEH_Debug_Tools::printr($_REQUEST, '$_REQUEST', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->step, '$this->checkout->step', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->edit_step, '$this->checkout->edit_step', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->action, '$this->checkout->action', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->reg_url_link, '$this->checkout->reg_url_link', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->revisit, '$this->checkout->revisit', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->generate_reg_form, '$this->checkout->generate_reg_form', __FILE__, __LINE__);
+		EEH_Debug_Tools::printr($this->checkout->process_form_submission, '$this->checkout->process_form_submission', __FILE__, __LINE__);
+	}
+
+
+
+	/**
+	 * _block_bots
+	 * checks that the incoming request has either of the following set:
+	 *  a uts (unix timestamp) which indicates that the request was redirected from the Ticket Selector
+	 *  a REG URL Link, which indicates that the request is a return visit to SPCO for a valid TXN
+	 * so if you're not coming from the Ticket Selector nor returning for a valid IP...
+	 * then where you coming from man?
+	 *
+	 * @return boolean
+	 */
+	private function _block_bots()
+	{
+		$invalid_checkout_access = \EED_Invalid_Checkout_Access::getInvalidCheckoutAccess();
+		if ($invalid_checkout_access->checkoutAccessIsInvalid($this->checkout)) {
+			return true;
+		}
+		return false;
+	}
+
+
+
+	/**
+	 *    _get_first_step
+	 *  gets slug for first step in $_reg_steps_array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    string
+	 */
+	private function _get_first_step()
+	{
+		$first_step = reset(EED_Single_Page_Checkout::$_reg_steps_array);
+		return isset($first_step['slug']) ? $first_step['slug'] : 'attendee_information';
+	}
+
+
+
+	/**
+	 *    _load_and_instantiate_reg_steps
+	 *  instantiates each reg step based on the loaded reg_steps array
+	 *
+	 * @access    private
+	 * @throws EE_Error
+	 * @return    bool
+	 */
+	private function _load_and_instantiate_reg_steps()
+	{
+		// have reg_steps already been instantiated ?
+		if (
+			empty($this->checkout->reg_steps)
+			|| apply_filters('FHEE__Single_Page_Checkout__load_reg_steps__reload_reg_steps', false, $this->checkout)
+		) {
+			// if not, then loop through raw reg steps array
+			foreach (EED_Single_Page_Checkout::$_reg_steps_array as $order => $reg_step) {
+				if ( ! $this->_load_and_instantiate_reg_step($reg_step, $order)) {
+					return false;
+				}
+			}
+			EE_Registry::instance()->CFG->registration->skip_reg_confirmation = true;
+			EE_Registry::instance()->CFG->registration->reg_confirmation_last = true;
+			// skip the registration_confirmation page ?
+			if (EE_Registry::instance()->CFG->registration->skip_reg_confirmation) {
+				// just remove it from the reg steps array
+				$this->checkout->remove_reg_step('registration_confirmation', false);
+			} else if (
+				isset($this->checkout->reg_steps['registration_confirmation'])
+				&& EE_Registry::instance()->CFG->registration->reg_confirmation_last
+			) {
+				// set the order to something big like 100
+				$this->checkout->set_reg_step_order('registration_confirmation', 100);
+			}
+			// filter the array for good luck
+			$this->checkout->reg_steps = apply_filters(
+				'FHEE__Single_Page_Checkout__load_reg_steps__reg_steps',
+				$this->checkout->reg_steps
+			);
+			// finally re-sort based on the reg step class order properties
+			$this->checkout->sort_reg_steps();
+		} else {
+			foreach ($this->checkout->reg_steps as $reg_step) {
+				// set all current step stati to FALSE
+				$reg_step->set_is_current_step(false);
+			}
+		}
+		if (empty($this->checkout->reg_steps)) {
+			EE_Error::add_error(__('No Reg Steps were loaded..', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		// make reg step details available to JS
+		$this->checkout->set_reg_step_JSON_info();
+		return true;
+	}
+
+
+
+	/**
+	 *     _load_and_instantiate_reg_step
+	 *
+	 * @access    private
+	 * @param array $reg_step
+	 * @param int   $order
+	 * @return bool
+	 */
+	private function _load_and_instantiate_reg_step($reg_step = array(), $order = 0)
+	{
+		// we need a file_path, class_name, and slug to add a reg step
+		if (isset($reg_step['file_path'], $reg_step['class_name'], $reg_step['slug'])) {
+			// if editing a specific step, but this is NOT that step... (and it's not the 'finalize_registration' step)
+			if (
+				$this->checkout->reg_url_link
+				&& $this->checkout->step !== $reg_step['slug']
+				&& $reg_step['slug'] !== 'finalize_registration'
+			) {
+				return true;
+			}
+			// instantiate step class using file path and class name
+			$reg_step_obj = EE_Registry::instance()->load_file(
+				$reg_step['file_path'],
+				$reg_step['class_name'],
+				'class',
+				$this->checkout,
+				false
+			);
+			// did we gets the goods ?
+			if ($reg_step_obj instanceof EE_SPCO_Reg_Step) {
+				// set reg step order based on config
+				$reg_step_obj->set_order($order);
+				// add instantiated reg step object to the master reg steps array
+				$this->checkout->add_reg_step($reg_step_obj);
+			} else {
+				EE_Error::add_error(
+					__('The current step could not be set.', 'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+				return false;
+			}
+		} else {
+			if (WP_DEBUG) {
+				EE_Error::add_error(
+					sprintf(
+						__('A registration step could not be loaded. One or more of the following data points is invalid:%4$s%5$sFile Path: %1$s%6$s%5$sClass Name: %2$s%6$s%5$sSlug: %3$s%6$s%7$s', 'event_espresso'),
+						isset($reg_step['file_path']) ? $reg_step['file_path'] : '',
+						isset($reg_step['class_name']) ? $reg_step['class_name'] : '',
+						isset($reg_step['slug']) ? $reg_step['slug'] : '',
+						'<ul>',
+						'<li>',
+						'</li>',
+						'</ul>'
+					),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+			}
+			return false;
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * _verify_transaction_and_get_registrations
+	 *
+	 * @access private
+	 * @return bool
+	 */
+	private function _verify_transaction_and_get_registrations()
+	{
+		// was there already a valid transaction in the checkout from the session ?
+		if ( ! $this->checkout->transaction instanceof EE_Transaction) {
+			// get transaction from db or session
+			$this->checkout->transaction = $this->checkout->reg_url_link && ! is_admin()
+				? $this->_get_transaction_and_cart_for_previous_visit()
+				: $this->_get_cart_for_current_session_and_setup_new_transaction();
+			if ( ! $this->checkout->transaction instanceof EE_Transaction) {
+				EE_Error::add_error(
+					__('Your Registration and Transaction information could not be retrieved from the db.',
+						'event_espresso'),
+					__FILE__, __FUNCTION__, __LINE__
+				);
+				$this->checkout->transaction = EE_Transaction::new_instance();
+				// add some style and make it dance
+				$this->add_styles_and_scripts();
+				EED_Single_Page_Checkout::$_initialized = true;
+				return false;
+			}
+			// and the registrations for the transaction
+			$this->_get_registrations($this->checkout->transaction);
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * _get_transaction_and_cart_for_previous_visit
+	 *
+	 * @access private
+	 * @return mixed EE_Transaction|NULL
+	 */
+	private function _get_transaction_and_cart_for_previous_visit()
+	{
+		/** @var $TXN_model EEM_Transaction */
+		$TXN_model = EE_Registry::instance()->load_model('Transaction');
+		// because the reg_url_link is present in the request, this is a return visit to SPCO, so we'll get the transaction data from the db
+		$transaction = $TXN_model->get_transaction_from_reg_url_link($this->checkout->reg_url_link);
+		// verify transaction
+		if ($transaction instanceof EE_Transaction) {
+			// and get the cart that was used for that transaction
+			$this->checkout->cart = $this->_get_cart_for_transaction($transaction);
+			return $transaction;
+		} else {
+			EE_Error::add_error(__('Your Registration and Transaction information could not be retrieved from the db.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+			return null;
+		}
+	}
+
+
+
+	/**
+	 * _get_cart_for_transaction
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return EE_Cart
+	 */
+	private function _get_cart_for_transaction($transaction)
+	{
+		return $this->checkout->get_cart_for_transaction($transaction);
+	}
+
+
+
+	/**
+	 * get_cart_for_transaction
+	 *
+	 * @access public
+	 * @param EE_Transaction $transaction
+	 * @return EE_Cart
+	 */
+	public function get_cart_for_transaction(EE_Transaction $transaction)
+	{
+		return $this->checkout->get_cart_for_transaction($transaction);
+	}
+
+
+
+	/**
+	 * _get_transaction_and_cart_for_current_session
+	 *    generates a new EE_Transaction object and adds it to the $_transaction property.
+	 *
+	 * @access private
+	 * @return EE_Transaction
+	 * @throws \EE_Error
+	 */
+	private function _get_cart_for_current_session_and_setup_new_transaction()
+	{
+		//  if there's no transaction, then this is the FIRST visit to SPCO
+		// so load up the cart ( passing nothing for the TXN because it doesn't exist yet )
+		$this->checkout->cart = $this->_get_cart_for_transaction(null);
+		// and then create a new transaction
+		$transaction = $this->_initialize_transaction();
+		// verify transaction
+		if ($transaction instanceof EE_Transaction) {
+			// save it so that we have an ID for other objects to use
+			$transaction->save();
+			// and save TXN data to the cart
+			$this->checkout->cart->get_grand_total()->save_this_and_descendants_to_txn($transaction->ID());
+		} else {
+			EE_Error::add_error(__('A Valid Transaction could not be initialized.', 'event_espresso'), __FILE__, __FUNCTION__, __LINE__);
+		}
+		return $transaction;
+	}
+
+
+
+	/**
+	 *    generates a new EE_Transaction object and adds it to the $_transaction property.
+	 *
+	 * @access private
+	 * @return mixed EE_Transaction|NULL
+	 */
+	private function _initialize_transaction()
+	{
+		try {
+			// ensure cart totals have been calculated
+			$this->checkout->cart->get_grand_total()->recalculate_total_including_taxes();
+			// grab the cart grand total
+			$cart_total = $this->checkout->cart->get_cart_grand_total();
+			// create new TXN
+			$transaction = EE_Transaction::new_instance(
+				array(
+					'TXN_reg_steps' => $this->checkout->initialize_txn_reg_steps_array(),
+					'TXN_total'     => $cart_total > 0 ? $cart_total : 0,
+					'TXN_paid'      => 0,
+					'STS_ID'        => EEM_Transaction::failed_status_code,
+				)
+			);
+			// save it so that we have an ID for other objects to use
+			$transaction->save();
+			// set cron job for following up on TXNs after their session has expired
+			EE_Cron_Tasks::schedule_expired_transaction_check(
+				EE_Registry::instance()->SSN->expiration() + 1,
+				$transaction->ID()
+			);
+			return $transaction;
+		} catch (Exception $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+		}
+		return null;
+	}
+
+
+
+	/**
+	 * _get_registrations
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return void
+	 * @throws \EventEspresso\core\exceptions\InvalidEntityException
+	 * @throws \EE_Error
+	 */
+	private function _get_registrations(EE_Transaction $transaction)
+	{
+		// first step: grab the registrants  { : o
+		$registrations = $transaction->registrations($this->checkout->reg_cache_where_params, true);
+		// verify registrations have been set
+		if (empty($registrations)) {
+			// if no cached registrations, then check the db
+			$registrations = $transaction->registrations($this->checkout->reg_cache_where_params, false);
+			// still nothing ? well as long as this isn't a revisit
+			if (empty($registrations) && ! $this->checkout->revisit) {
+				// generate new registrations from scratch
+				$registrations = $this->_initialize_registrations($transaction);
+			}
+		}
+		// sort by their original registration order
+		usort($registrations, array('EED_Single_Page_Checkout', 'sort_registrations_by_REG_count'));
+		// then loop thru the array
+		foreach ($registrations as $registration) {
+			// verify each registration
+			if ($registration instanceof EE_Registration) {
+				// we display all attendee info for the primary registrant
+				if ($this->checkout->reg_url_link === $registration->reg_url_link()
+					&& $registration->is_primary_registrant()
+				) {
+					$this->checkout->primary_revisit = true;
+					break;
+				} else if ($this->checkout->revisit
+						   && $this->checkout->reg_url_link !== $registration->reg_url_link()
+				) {
+					// but hide info if it doesn't belong to you
+					$transaction->clear_cache('Registration', $registration->ID());
+				}
+				$this->checkout->set_reg_status_updated($registration->ID(), false);
+			}
+		}
+	}
+
+
+
+	/**
+	 *    adds related EE_Registration objects for each ticket in the cart to the current EE_Transaction object
+	 *
+	 * @access private
+	 * @param EE_Transaction $transaction
+	 * @return    array
+	 * @throws \EventEspresso\core\exceptions\InvalidEntityException
+	 * @throws \EE_Error
+	 */
+	private function _initialize_registrations(EE_Transaction $transaction)
+	{
+		$att_nmbr = 0;
+		$registrations = array();
+		if ($transaction instanceof EE_Transaction) {
+			/** @type EE_Registration_Processor $registration_processor */
+			$registration_processor = EE_Registry::instance()->load_class('Registration_Processor');
+			$this->checkout->total_ticket_count = $this->checkout->cart->all_ticket_quantity_count();
+			// now let's add the cart items to the $transaction
+			foreach ($this->checkout->cart->get_tickets() as $line_item) {
+				//do the following for each ticket of this type they selected
+				for ($x = 1; $x <= $line_item->quantity(); $x++) {
+					$att_nmbr++;
+					/** @var EventEspresso\core\services\commands\registration\CreateRegistrationCommand $CreateRegistrationCommand */
+					$CreateRegistrationCommand = EE_Registry::instance()
+															->create(
+																'EventEspresso\core\services\commands\registration\CreateRegistrationCommand',
+																array(
+																	$transaction,
+																	$line_item,
+																	$att_nmbr,
+																	$this->checkout->total_ticket_count,
+																)
+															);
+					// override capabilities for frontend registrations
+					if ( ! is_admin()) {
+						$CreateRegistrationCommand->setCapCheck(
+							new PublicCapabilities('', 'create_new_registration')
+						);
+					}
+					$registration = EE_Registry::instance()->BUS->execute($CreateRegistrationCommand);
+					if ( ! $registration instanceof EE_Registration) {
+						throw new InvalidEntityException($registration, 'EE_Registration');
+					}
+					$registrations[ $registration->ID() ] = $registration;
+				}
+			}
+			$registration_processor->fix_reg_final_price_rounding_issue($transaction);
+		}
+		return $registrations;
+	}
+
+
+
+	/**
+	 * sorts registrations by REG_count
+	 *
+	 * @access public
+	 * @param EE_Registration $reg_A
+	 * @param EE_Registration $reg_B
+	 * @return int
+	 */
+	public static function sort_registrations_by_REG_count(EE_Registration $reg_A, EE_Registration $reg_B)
+	{
+		// this shouldn't ever happen within the same TXN, but oh well
+		if ($reg_A->count() === $reg_B->count()) {
+			return 0;
+		}
+		return ($reg_A->count() > $reg_B->count()) ? 1 : -1;
+	}
+
+
+
+	/**
+	 *    _final_verifications
+	 * just makes sure that everything is set up correctly before proceeding
+	 *
+	 * @access    private
+	 * @return    bool
+	 * @throws \EE_Error
+	 */
+	private function _final_verifications()
+	{
+		// filter checkout
+		$this->checkout = apply_filters('FHEE__EED_Single_Page_Checkout___final_verifications__checkout', $this->checkout);
+		//verify that current step is still set correctly
+		if ( ! $this->checkout->current_step instanceof EE_SPCO_Reg_Step) {
+			EE_Error::add_error(
+				__('We\'re sorry but the registration process can not proceed because one or more registration steps were not setup correctly. Please refresh the page and try again or contact support.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+		// if returning to SPCO, then verify that primary registrant is set
+		if ( ! empty($this->checkout->reg_url_link)) {
+			$valid_registrant = $this->checkout->transaction->primary_registration();
+			if ( ! $valid_registrant instanceof EE_Registration) {
+				EE_Error::add_error(
+					__('We\'re sorry but there appears to be an error with the "reg_url_link" or the primary registrant for this transaction. Please refresh the page and try again or contact support.', 'event_espresso'),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+			$valid_registrant = null;
+			foreach ($this->checkout->transaction->registrations($this->checkout->reg_cache_where_params) as $registration) {
+				if (
+					$registration instanceof EE_Registration
+					&& $registration->reg_url_link() === $this->checkout->reg_url_link
+				) {
+					$valid_registrant = $registration;
+				}
+			}
+			if ( ! $valid_registrant instanceof EE_Registration) {
+				// hmmm... maybe we have the wrong session because the user is opening multiple tabs ?
+				if (EED_Single_Page_Checkout::$_checkout_verified) {
+					// clear the session, mark the checkout as unverified, and try again
+					EE_Registry::instance()->SSN->clear_session();
+					EED_Single_Page_Checkout::$_initialized = false;
+					EED_Single_Page_Checkout::$_checkout_verified = false;
+					$this->_initialize();
+					EE_Error::reset_notices();
+					return false;
+				}
+				EE_Error::add_error(
+					__('We\'re sorry but there appears to be an error with the "reg_url_link" or the transaction itself. Please refresh the page and try again or contact support.', 'event_espresso'),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+				return false;
+			}
+		}
+		// now that things have been kinda sufficiently verified,
+		// let's add the checkout to the session so that's available other systems
+		EE_Registry::instance()->SSN->set_checkout($this->checkout);
+		return true;
+	}
+
+
+
+	/**
+	 *    _initialize_reg_steps
+	 * first makes sure that EE_Transaction_Processor::set_reg_step_initiated() is called as required
+	 * then loops thru all of the active reg steps and calls the initialize_reg_step() method
+	 *
+	 * @access    private
+	 * @param bool $reinitializing
+	 * @throws \EE_Error
+	 */
+	private function _initialize_reg_steps($reinitializing = false)
+	{
+		$this->checkout->set_reg_step_initiated($this->checkout->current_step);
+		// loop thru all steps to call their individual "initialize" methods and set i18n strings for JS
+		foreach ($this->checkout->reg_steps as $reg_step) {
+			if ( ! $reg_step->initialize_reg_step()) {
+				// if not initialized then maybe this step is being removed...
+				if ( ! $reinitializing && $reg_step->is_current_step()) {
+					// if it was the current step, then we need to start over here
+					$this->_initialize_reg_steps(true);
+					return;
+				}
+				continue;
+			}
+			// add css and JS for current step
+			$reg_step->enqueue_styles_and_scripts();
+			// i18n
+			$reg_step->translate_js_strings();
+			if ($reg_step->is_current_step()) {
+				// the text that appears on the reg step form submit button
+				$reg_step->set_submit_button_text();
+			}
+		}
+		// dynamically creates hook point like: AHEE__Single_Page_Checkout___initialize_reg_step__attendee_information
+		do_action("AHEE__Single_Page_Checkout___initialize_reg_step__{$this->checkout->current_step->slug()}", $this->checkout->current_step);
+	}
+
+
+
+	/**
+	 * _check_form_submission
+	 *
+	 * @access private
+	 * @return boolean
+	 */
+	private function _check_form_submission()
+	{
+		//does this request require the reg form to be generated ?
+		if ($this->checkout->generate_reg_form) {
+			// ever heard that song by Blue Rodeo ?
+			try {
+				$this->checkout->current_step->reg_form = $this->checkout->current_step->generate_reg_form();
+				// if not displaying a form, then check for form submission
+				if (
+					$this->checkout->process_form_submission
+					&& $this->checkout->current_step->reg_form->was_submitted()
+				) {
+					// clear out any old data in case this step is being run again
+					$this->checkout->current_step->set_valid_data(array());
+					// capture submitted form data
+					$this->checkout->current_step->reg_form->receive_form_submission(
+						apply_filters('FHEE__Single_Page_Checkout___check_form_submission__request_params', EE_Registry::instance()->REQ->params(), $this->checkout)
+					);
+					// validate submitted form data
+					if ( ! $this->checkout->continue_reg || ! $this->checkout->current_step->reg_form->is_valid()) {
+						// thou shall not pass !!!
+						$this->checkout->continue_reg = false;
+						// any form validation errors?
+						if ($this->checkout->current_step->reg_form->submission_error_message() !== '') {
+							$submission_error_messages = array();
+							// bad, bad, bad registrant
+							foreach ($this->checkout->current_step->reg_form->get_validation_errors_accumulated() as $validation_error) {
+								if ($validation_error instanceof EE_Validation_Error) {
+									$submission_error_messages[] = sprintf(
+										__('%s : %s', 'event_espresso'),
+										$validation_error->get_form_section()->html_label_text(),
+										$validation_error->getMessage()
+									);
+								}
+							}
+							EE_Error::add_error(implode('<br />', $submission_error_messages), __FILE__, __FUNCTION__, __LINE__);
+						}
+						// well not really... what will happen is we'll just get redirected back to redo the current step
+						$this->go_to_next_step();
+						return false;
+					}
+				}
+			} catch (EE_Error $e) {
+				$e->get_error();
+			}
+		}
+		return true;
+	}
+
+
+
+	/**
+	 * _process_action
+	 *
+	 * @access private
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	private function _process_form_action()
+	{
+		// what cha wanna do?
+		switch ($this->checkout->action) {
+			// AJAX next step reg form
+			case 'display_spco_reg_step' :
+				$this->checkout->redirect = false;
+				if (EE_Registry::instance()->REQ->ajax) {
+					$this->checkout->json_response->set_reg_step_html($this->checkout->current_step->display_reg_form());
+				}
+				break;
+			default :
+				// meh... do one of those other steps first
+				if ( ! empty($this->checkout->action) && is_callable(array($this->checkout->current_step, $this->checkout->action))) {
+					// dynamically creates hook point like: AHEE__Single_Page_Checkout__before_attendee_information__process_reg_step
+					do_action("AHEE__Single_Page_Checkout__before_{$this->checkout->current_step->slug()}__{$this->checkout->action}", $this->checkout->current_step);
+					// call action on current step
+					if (call_user_func(array($this->checkout->current_step, $this->checkout->action))) {
+						// good registrant, you get to proceed
+						if (
+							$this->checkout->current_step->success_message() !== ''
+							&& apply_filters(
+								'FHEE__Single_Page_Checkout___process_form_action__display_success',
+								false
+							)
+						) {
+							EE_Error::add_success(
+								$this->checkout->current_step->success_message()
+								. '<br />' . $this->checkout->next_step->_instructions()
+							);
+						}
+						// pack it up, pack it in...
+						$this->_setup_redirect();
+					}
+					// dynamically creates hook point like: AHEE__Single_Page_Checkout__after_payment_options__process_reg_step
+					do_action("AHEE__Single_Page_Checkout__after_{$this->checkout->current_step->slug()}__{$this->checkout->action}", $this->checkout->current_step);
+				} else {
+					EE_Error::add_error(
+						sprintf(
+							__('The requested form action "%s" does not exist for the current "%s" registration step.', 'event_espresso'),
+							$this->checkout->action,
+							$this->checkout->current_step->name()
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+				}
+			// end default
+		}
+		// store our progress so far
+		$this->checkout->stash_transaction_and_checkout();
+		// advance to the next step! If you pass GO, collect $200
+		$this->go_to_next_step();
+	}
+
+
+
+	/**
+	 *        add_styles_and_scripts
+	 *
+	 * @access        public
+	 * @return        void
+	 */
+	public function add_styles_and_scripts()
+	{
+		// i18n
+		$this->translate_js_strings();
+		if ($this->checkout->admin_request) {
+			add_action('admin_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
+		} else {
+			add_action('wp_enqueue_scripts', array($this, 'enqueue_styles_and_scripts'), 10);
+		}
+	}
+
+
+
+	/**
+	 *        translate_js_strings
+	 *
+	 * @access        public
+	 * @return        void
+	 */
+	public function translate_js_strings()
+	{
+		EE_Registry::$i18n_js_strings['revisit'] = $this->checkout->revisit;
+		EE_Registry::$i18n_js_strings['e_reg_url_link'] = $this->checkout->reg_url_link;
+		EE_Registry::$i18n_js_strings['server_error'] = __('An unknown error occurred on the server while attempting to process your request. Please refresh the page and try again or contact support.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['invalid_json_response'] = __('An invalid response was returned from the server while attempting to process your request. Please refresh the page and try again or contact support.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['validation_error'] = __('There appears to be a problem with the form validation configuration! Please check the admin settings or contact support.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['invalid_payment_method'] = __('There appears to be a problem with the payment method configuration! Please refresh the page and try again or contact support.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['reg_step_error'] = __('This registration step could not be completed. Please refresh the page and try again.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['invalid_coupon'] = __('We\'re sorry but that coupon code does not appear to be valid. If this is incorrect, please contact the site administrator.', 'event_espresso');
+		EE_Registry::$i18n_js_strings['process_registration'] = sprintf(
+			__('Please wait while we process your registration.%sDo not refresh the page or navigate away while this is happening.%sThank you for your patience.', 'event_espresso'),
+			'<br/>',
+			'<br/>'
+		);
+		EE_Registry::$i18n_js_strings['language'] = get_bloginfo('language');
+		EE_Registry::$i18n_js_strings['EESID'] = EE_Registry::instance()->SSN->id();
+		EE_Registry::$i18n_js_strings['currency'] = EE_Registry::instance()->CFG->currency;
+		EE_Registry::$i18n_js_strings['datepicker_yearRange'] = '-150:+20';
+		EE_Registry::$i18n_js_strings['timer_years'] = __('years', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_months'] = __('months', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_weeks'] = __('weeks', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_days'] = __('days', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_hours'] = __('hours', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_minutes'] = __('minutes', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_seconds'] = __('seconds', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_year'] = __('year', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_month'] = __('month', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_week'] = __('week', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_day'] = __('day', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_hour'] = __('hour', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_minute'] = __('minute', 'event_espresso');
+		EE_Registry::$i18n_js_strings['timer_second'] = __('second', 'event_espresso');
+		EE_Registry::$i18n_js_strings['registration_expiration_notice'] = sprintf(
+			__(
+				'%1$sWe\'re sorry, but your registration time has expired.%2$s%3$s%4$sIf you still wish to complete your registration, please return to the %5$sEvent List%6$sEvent List%7$s and reselect your tickets if available. Please except our apologies for any inconvenience this may have caused.%8$s',
+				'event_espresso'
+			),
+			'<h4 class="important-notice">',
+			'</h4>',
+			'<br />',
+			'<p>',
+			'<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+			'">',
+			'</a>',
+			'</p>'
+		);
+		EE_Registry::$i18n_js_strings['ajax_submit'] = apply_filters('FHEE__Single_Page_Checkout__translate_js_strings__ajax_submit', true);
+		EE_Registry::$i18n_js_strings['session_extension'] = absint(
+			apply_filters('FHEE__EE_Session__extend_expiration__seconds_added', 10 * MINUTE_IN_SECONDS)
+		);
+		EE_Registry::$i18n_js_strings['session_expiration'] = gmdate(
+			'M d, Y H:i:s', EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)
+		);
+	}
+
+
+
+	/**
+	 *    enqueue_styles_and_scripts
+	 *
+	 * @access        public
+	 * @return        void
+	 * @throws \EE_Error
+	 */
+	public function enqueue_styles_and_scripts()
+	{
+		// load css
+		wp_register_style('single_page_checkout', SPCO_CSS_URL . 'single_page_checkout.css', array(), EVENT_ESPRESSO_VERSION);
+		wp_enqueue_style('single_page_checkout');
+		// load JS
+		wp_register_script('jquery_plugin', EE_THIRD_PARTY_URL . 'jquery	.plugin.min.js', array('jquery'), '1.0.1', true);
+		wp_register_script('jquery_countdown', EE_THIRD_PARTY_URL . 'jquery	.countdown.min.js', array('jquery_plugin'), '2.0.2', true);
+		wp_register_script('single_page_checkout', SPCO_JS_URL . 'single_page_checkout.js', array('espresso_core', 'underscore', 'ee_form_section_validation', 'jquery_countdown'), EVENT_ESPRESSO_VERSION, true);
+		if ($this->checkout->registration_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->registration_form->enqueue_js();
+		}
+		if ($this->checkout->current_step->reg_form instanceof EE_Form_Section_Proper) {
+			$this->checkout->current_step->reg_form->enqueue_js();
+		}
+		wp_enqueue_script('single_page_checkout');
+		/**
+		 * global action hook for enqueueing styles and scripts with
+		 * spco calls.
+		 */
+		do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts', $this);
+		/**
+		 * dynamic action hook for enqueueing styles and scripts with spco calls.
+		 * The hook will end up being something like AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__attendee_information
+		 */
+		do_action('AHEE__EED_Single_Page_Checkout__enqueue_styles_and_scripts__' . $this->checkout->current_step->slug(), $this);
+	}
+
+
+
+	/**
+	 *    display the Registration Single Page Checkout Form
+	 *
+	 * @access    private
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	private function _display_spco_reg_form()
+	{
+		// if registering via the admin, just display the reg form for the current step
+		if ($this->checkout->admin_request) {
+			EE_Registry::instance()->REQ->add_output($this->checkout->current_step->display_reg_form());
+		} else {
+			// add powered by EE msg
+			add_action('AHEE__SPCO__reg_form_footer', array('EED_Single_Page_Checkout', 'display_registration_footer'));
+			$empty_cart = count($this->checkout->transaction->registrations($this->checkout->reg_cache_where_params)) < 1
+				? true
+				: false;
+			EE_Registry::$i18n_js_strings['empty_cart'] = $empty_cart;
+			$cookies_not_set_msg = '';
+			if ($empty_cart && ! isset($_COOKIE['ee_cookie_test'])) {
+				$cookies_not_set_msg = apply_filters(
+					'FHEE__Single_Page_Checkout__display_spco_reg_form__cookies_not_set_msg',
+					sprintf(
+						__(
+							'%1$s%3$sIt appears your browser is not currently set to accept Cookies%4$s%5$sIn order to register for events, you need to enable cookies.%7$sIf you require assistance, then click the following link to learn how to %8$senable cookies%9$s%6$s%2$s',
+							'event_espresso'
+						),
+						'<div class="ee-attention">',
+						'</div>',
+						'<h6 class="important-notice">',
+						'</h6>',
+						'<p>',
+						'</p>',
+						'<br />',
+						'<a href="http://www.whatarecookies.com/enable.asp" target="_blank">',
+						'</a>'
+					)
+				);
+			}
+			$this->checkout->registration_form = new EE_Form_Section_Proper(
+				array(
+					'name'            => 'single-page-checkout',
+					'html_id'         => 'ee-single-page-checkout-dv',
+					'layout_strategy' =>
+						new EE_Template_Layout(
+							array(
+								'layout_template_file' => SPCO_TEMPLATES_PATH . 'registration_page_wrapper.template.php',
+								'template_args'        => array(
+									'empty_cart'              => $empty_cart,
+									'revisit'                 => $this->checkout->revisit,
+									'reg_steps'               => $this->checkout->reg_steps,
+									'next_step'               => $this->checkout->next_step instanceof EE_SPCO_Reg_Step
+										? $this->checkout->next_step->slug()
+										: '',
+									'cancel_page_url'         => $this->checkout->cancel_page_url,
+									'empty_msg'               => apply_filters(
+										'FHEE__Single_Page_Checkout__display_spco_reg_form__empty_msg',
+										sprintf(
+											__('You need to %1$sReturn to Events list%2$sselect at least one event%3$s before you can proceed with the registration process.',
+												'event_espresso'),
+											'<a href="' . get_post_type_archive_link('espresso_events') . '" title="',
+											'">',
+											'</a>'
+										)
+									),
+									'cookies_not_set_msg'     => $cookies_not_set_msg,
+									'registration_time_limit' => $this->checkout->get_registration_time_limit(),
+									'session_expiration'      =>
+										date('M d, Y H:i:s', EE_Registry::instance()->SSN->expiration() + (get_option('gmt_offset') * HOUR_IN_SECONDS)),
+								),
+							)
+						),
+				)
+			);
+			// load template and add to output sent that gets filtered into the_content()
+			EE_Registry::instance()->REQ->add_output($this->checkout->registration_form->get_html());
+		}
+	}
+
+
+
+	/**
+	 *    add_extra_finalize_registration_inputs
+	 *
+	 * @access    public
+	 * @param $next_step
+	 * @internal  param string $label
+	 * @return void
+	 */
+	public function add_extra_finalize_registration_inputs($next_step)
+	{
+		if ($next_step === 'finalize_registration') {
+			echo '<div id="spco-extra-finalize_registration-inputs-dv"></div>';
+		}
+	}
+
+
+
+	/**
+	 *    display_registration_footer
+	 *
+	 * @access    public
+	 * @return    string
+	 */
+	public static function display_registration_footer()
+	{
+		if (
+		apply_filters(
+			'FHEE__EE_Front__Controller__show_reg_footer',
+			EE_Registry::instance()->CFG->admin->show_reg_footer
+		)
+		) {
+			add_filter(
+				'FHEE__EEH_Template__powered_by_event_espresso__url',
+				function ($url) {
+					return apply_filters('FHEE__EE_Front_Controller__registration_footer__url', $url);
+				}
+			);
+			echo apply_filters(
+				'FHEE__EE_Front_Controller__display_registration_footer',
+				\EEH_Template::powered_by_event_espresso(
+					'',
+					'espresso-registration-footer-dv',
+					array('utm_content' => 'registration_checkout')
+				)
+			);
+		}
+		return '';
+	}
+
+
+
+	/**
+	 *    unlock_transaction
+	 *
+	 * @access    public
+	 * @return    void
+	 * @throws \EE_Error
+	 */
+	public function unlock_transaction()
+	{
+		if ($this->checkout->transaction instanceof EE_Transaction) {
+			$this->checkout->transaction->unlock();
+		}
+	}
+
+
+
+	/**
+	 *        _setup_redirect
+	 *
+	 * @access    private
+	 * @return void
+	 */
+	private function _setup_redirect()
+	{
+		if ($this->checkout->continue_reg && $this->checkout->next_step instanceof EE_SPCO_Reg_Step) {
+			$this->checkout->redirect = true;
+			if (empty($this->checkout->redirect_url)) {
+				$this->checkout->redirect_url = $this->checkout->next_step->reg_step_url();
+			}
+			$this->checkout->redirect_url = apply_filters(
+				'FHEE__EED_Single_Page_Checkout___setup_redirect__checkout_redirect_url',
+				$this->checkout->redirect_url,
+				$this->checkout
+			);
+		}
+	}
+
+
+
+	/**
+	 *   handle ajax message responses and redirects
+	 *
+	 * @access public
+	 * @return void
+	 * @throws \EE_Error
+	 */
+	public function go_to_next_step()
+	{
+		if (EE_Registry::instance()->REQ->ajax) {
+			// capture contents of output buffer we started earlier in the request, and insert into JSON response
+			$this->checkout->json_response->set_unexpected_errors(ob_get_clean());
+		}
+		$this->unlock_transaction();
+		// just return for these conditions
+		if (
+			$this->checkout->admin_request
+			|| $this->checkout->action === 'redirect_form'
+			|| $this->checkout->action === 'update_checkout'
+		) {
+			return;
+		}
+		// AJAX response
+		$this->_handle_json_response();
+		// redirect to next step or the Thank You page
+		$this->_handle_html_redirects();
+		// hmmm... must be something wrong, so let's just display the form again !
+		$this->_display_spco_reg_form();
+	}
+
+
+
+	/**
+	 *   _handle_json_response
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _handle_json_response()
+	{
+		// if this is an ajax request
+		if (EE_Registry::instance()->REQ->ajax) {
+			// DEBUG LOG
+			//$this->checkout->log(
+			//	__CLASS__, __FUNCTION__, __LINE__,
+			//	array(
+			//		'json_response_redirect_url' => $this->checkout->json_response->redirect_url(),
+			//		'redirect'                   => $this->checkout->redirect,
+			//		'continue_reg'               => $this->checkout->continue_reg,
+			//	)
+			//);
+			$this->checkout->json_response->set_registration_time_limit(
+				$this->checkout->get_registration_time_limit()
+			);
+			$this->checkout->json_response->set_payment_amount($this->checkout->amount_owing);
+			// just send the ajax (
+			$json_response = apply_filters(
+				'FHEE__EE_Single_Page_Checkout__JSON_response',
+				$this->checkout->json_response
+			);
+			echo $json_response;
+			exit();
+		}
+	}
+
+
+
+	/**
+	 *   _handle_redirects
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _handle_html_redirects()
+	{
+		// going somewhere ?
+		if ($this->checkout->redirect && ! empty($this->checkout->redirect_url)) {
+			// store notices in a transient
+			EE_Error::get_notices(false, true, true);
+			// DEBUG LOG
+			//$this->checkout->log(
+			//	__CLASS__, __FUNCTION__, __LINE__,
+			//	array(
+			//		'headers_sent' => headers_sent(),
+			//		'redirect_url'     => $this->checkout->redirect_url,
+			//		'headers_list'    => headers_list(),
+			//	)
+			//);
+			wp_safe_redirect($this->checkout->redirect_url);
+			exit();
+		}
+	}
+
+
+
+	/**
+	 *   set_checkout_anchor
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function set_checkout_anchor()
+	{
+		echo '<a id="checkout" style="float: left; margin-left: -999em;"></a>';
+	}
 
 
 

core/libraries/rest_api/controllers/config/Read.php

Indentation +22 added lines, -22 removed lines

@@ -42,27 +42,27 @@ 
 	
 	/**
 	 * Handles the request for public site info
-     * @global $wp_json_basic_auth_success boolean set by the basic auth plugin, indicates if the current user could be authenticated using basic auth data
-     * @global $wp_json_basic_auth_received_data boolean set by the basic auth plugin, indicates if basic auth data was somehow received
+	 * @global $wp_json_basic_auth_success boolean set by the basic auth plugin, indicates if the current user could be authenticated using basic auth data
+	 * @global $wp_json_basic_auth_received_data boolean set by the basic auth plugin, indicates if basic auth data was somehow received
 	 * @param \WP_REST_Request $request
 	 * @return \EE_Config|\WP_Error
 	 */
 	public static function handle_request_site_info( \WP_REST_Request $request) {
-	    global $wp_json_basic_auth_success, $wp_json_basic_auth_received_data;
-        $insecure_usage_of_basic_auth = apply_filters(
-            'EventEspresso__core__libraries__rest_api__controllers__config__handle_request_site_info__insecure_usage_of_basic_auth',
-            $wp_json_basic_auth_success && ! is_ssl(),
-            $request
-        );
-        if( $insecure_usage_of_basic_auth ) {
-            $warning = sprintf(
-                esc_html__( 'Your data is not secured with SSL. %1$sPlease see our recommendations.%2$s', 'event_espresso' ),
-                '<a href="https://eventespresso.com/wiki/rest-api-security-recommendations/">',
-                '</a>'
-            );
-        } else {
-            $warning = '';
-        }
+		global $wp_json_basic_auth_success, $wp_json_basic_auth_received_data;
+		$insecure_usage_of_basic_auth = apply_filters(
+			'EventEspresso__core__libraries__rest_api__controllers__config__handle_request_site_info__insecure_usage_of_basic_auth',
+			$wp_json_basic_auth_success && ! is_ssl(),
+			$request
+		);
+		if( $insecure_usage_of_basic_auth ) {
+			$warning = sprintf(
+				esc_html__( 'Your data is not secured with SSL. %1$sPlease see our recommendations.%2$s', 'event_espresso' ),
+				'<a href="https://eventespresso.com/wiki/rest-api-security-recommendations/">',
+				'</a>'
+			);
+		} else {
+			$warning = '';
+		}
 		return array(
 			'default_timezone' => array(
 				'pretty' => \EEH_DTT_Helper::get_timezone_string_for_display(),
@@ -70,11 +70,11 @@ 
 				'offset' => \EEH_DTT_Helper::get_site_timezone_gmt_offset(),
 			),
 			'default_currency' => \EE_Config::instance()->currency,
-            'authentication' => array(
-                'received_basic_auth_data' => (bool)$wp_json_basic_auth_received_data,
-                'insecure_usage_of_basic_auth' => (bool)$insecure_usage_of_basic_auth,
-                'warning' => $warning
-            )
+			'authentication' => array(
+				'received_basic_auth_data' => (bool)$wp_json_basic_auth_received_data,
+				'insecure_usage_of_basic_auth' => (bool)$insecure_usage_of_basic_auth,
+				'warning' => $warning
+			)
 		);
 	}
 }

Spacing +12 added lines, -12 removed lines

@@ -1,7 +1,7 @@ 
 <?php
 namespace EventEspresso\core\libraries\rest_api\controllers\config;
-if ( !defined( 'EVENT_ESPRESSO_VERSION' ) ) {
-	exit( 'No direct script access allowed' );
+if ( ! defined('EVENT_ESPRESSO_VERSION')) {
+	exit('No direct script access allowed');
 }
 
 /**
@@ -21,11 +21,11 @@ 
 	 * @param \WP_REST_Request $request
 	 * @return \EE_Config|\WP_Error
 	 */
-	public static function handle_request( \WP_REST_Request $request) {
+	public static function handle_request(\WP_REST_Request $request) {
 		$cap = \EE_Restriction_Generator_Base::get_default_restrictions_cap();
-		if( \EE_Capabilities::instance()->current_user_can( $cap, 'read_over_api' ) ){
+		if (\EE_Capabilities::instance()->current_user_can($cap, 'read_over_api')) {
 			return \EE_Config::instance();
-		}else{
+		} else {
 			return new \WP_Error(
 				'cannot_read_config',
 				sprintf(
@@ -35,7 +35,7 @@ 
 					),
 					$cap
 				),
-				array( 'status' => 403 )
+				array('status' => 403)
 			);
 		}
 	}
@@ -47,16 +47,16 @@ 
 	 * @param \WP_REST_Request $request
 	 * @return \EE_Config|\WP_Error
 	 */
-	public static function handle_request_site_info( \WP_REST_Request $request) {
+	public static function handle_request_site_info(\WP_REST_Request $request) {
 	    global $wp_json_basic_auth_success, $wp_json_basic_auth_received_data;
         $insecure_usage_of_basic_auth = apply_filters(
             'EventEspresso__core__libraries__rest_api__controllers__config__handle_request_site_info__insecure_usage_of_basic_auth',
             $wp_json_basic_auth_success && ! is_ssl(),
             $request
         );
-        if( $insecure_usage_of_basic_auth ) {
+        if ($insecure_usage_of_basic_auth) {
             $warning = sprintf(
-                esc_html__( 'Your data is not secured with SSL. %1$sPlease see our recommendations.%2$s', 'event_espresso' ),
+                esc_html__('Your data is not secured with SSL. %1$sPlease see our recommendations.%2$s', 'event_espresso'),
                 '<a href="https://eventespresso.com/wiki/rest-api-security-recommendations/">',
                 '</a>'
             );
@@ -66,13 +66,13 @@ 
 		return array(
 			'default_timezone' => array(
 				'pretty' => \EEH_DTT_Helper::get_timezone_string_for_display(),
-				'string' => get_option( 'timezone_string' ),
+				'string' => get_option('timezone_string'),
 				'offset' => \EEH_DTT_Helper::get_site_timezone_gmt_offset(),
 			),
 			'default_currency' => \EE_Config::instance()->currency,
             'authentication' => array(
-                'received_basic_auth_data' => (bool)$wp_json_basic_auth_received_data,
-                'insecure_usage_of_basic_auth' => (bool)$insecure_usage_of_basic_auth,
+                'received_basic_auth_data' => (bool) $wp_json_basic_auth_received_data,
+                'insecure_usage_of_basic_auth' => (bool) $insecure_usage_of_basic_auth,
                 'warning' => $warning
             )
 		);

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', '4.9.34.rc.004');
-        }
+		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', '4.9.34.rc.004');
+		}
 
-        // 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

modules/ticket_selector/TicketSelectorRowStandard.php

Indentation +392 added lines, -392 removed lines

@@ -19,398 +19,398 @@
 class TicketSelectorRowStandard extends TicketSelectorRow
 {
 
-    /**
-     * @var TicketDetails $ticket_details
-     */
-    protected $ticket_details;
-
-    /**
-     * @var \EE_Ticket_Selector_Config $template_settings
-     */
-    protected $template_settings;
-
-    /**
-     * @var \EE_Tax_Config $tax_settings
-     */
-    protected $tax_settings;
-
-    /**
-     * @var boolean $prices_displayed_including_taxes
-     */
-    protected $prices_displayed_including_taxes;
-
-    /**
-     * @var int $row
-     */
-    protected $row;
-
-    /**
-     * @var int $cols
-     */
-    protected $cols;
-
-    /**
-     * @var boolean $hidden_input_qty
-     */
-    protected $hidden_input_qty;
-
-    /**
-     * @var string $ticket_datetime_classes
-     */
-    protected $ticket_datetime_classes;
-
-
-
-    /**
-     * TicketDetails constructor.
-     *
-     * @param TicketDetails  $ticket_details
-     * @param \EE_Tax_Config $tax_settings
-     * @param int            $total_tickets
-     * @param int            $max_atndz
-     * @param int            $row
-     * @param int            $cols
-     * @param boolean        $required_ticket_sold_out
-     * @param string         $event_status
-     * @param string         $ticket_datetime_classes
-     * @throws EE_Error
-     * @throws UnexpectedEntityException
-     */
-    public function __construct(
-        TicketDetails $ticket_details,
-        \EE_Tax_Config $tax_settings,
-        $total_tickets,
-        $max_atndz,
-        $row,
-        $cols,
-        $required_ticket_sold_out,
-        $event_status,
-        $ticket_datetime_classes
-    ) {
-        $this->ticket = $ticket_details->getTicket();
-        $this->ticket_details = $ticket_details;
-        $this->template_settings = $ticket_details->getTemplateSettings();
-        $this->tax_settings = $tax_settings;
-        $this->total_tickets = $total_tickets;
-        $this->max_atndz = $max_atndz;
-        $this->row = $row;
-        $this->cols = $cols;
-        $this->date_format = $ticket_details->getDateFormat();
-        $this->ticket_datetime_classes = $ticket_datetime_classes;
-        parent::__construct($this->ticket, $max_atndz, $this->date_format, $event_status, $required_ticket_sold_out);
-    }
-
-
-
-    /**
-     * other ticket rows will need to know if a required ticket is sold out,
-     * so that they are not offered for sale
-     *
-     * @return boolean
-     */
-    public function getRequiredTicketSoldOut()
-    {
-        return $this->required_ticket_sold_out;
-    }
-
-
-
-    /**
-     * @return int
-     */
-    public function getCols()
-    {
-        return $this->cols;
-    }
-
-
-
-    /**
-     * getHtml
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    public function getHtml()
-    {
-        $min = 0;
-        $max = $this->ticket->max();
-        $remaining = $this->ticket->remaining();
-        if ($this->ticket->is_on_sale() && $this->ticket->is_remaining()) {
-            list($min, $max) = $this->setTicketMinAndMax($remaining);
-        } else {
-            // set flag if ticket is required (flag is set to start date so that future tickets are not blocked)
-            $this->required_ticket_sold_out = $this->ticket->required() && ! $remaining
-                ? $this->ticket->start_date()
-                : $this->required_ticket_sold_out;
-        }
-        list($ticket_price, $ticket_bundle) = $this->getTicketPriceDetails();
-        list($tkt_status, $ticket_status, $status_class) = $this->getTicketStatusClasses($remaining);
-        /**
-         * Allow plugins to hook in and abort the generation and display of this row to do
-         * something else if they want.
-         * For an addon to abort things, all they have to do is register a filter with this hook, and
-         * return a value that is NOT false.  Whatever is returned gets echoed instead of the
-         * current row.
-         *
-         * @var string|bool
-         */
-        $ticket_selector_row_html = apply_filters(
-            'FHEE__ticket_selector_chart_template__do_ticket_entire_row',
-            false,
-            $this->ticket,
-            $max,
-            $min,
-            $this->required_ticket_sold_out,
-            $ticket_price,
-            $ticket_bundle,
-            $ticket_status,
-            $status_class
-        );
-        if ($ticket_selector_row_html !== false) {
-            return $ticket_selector_row_html;
-        }
-        $ticket_selector_row_html = \EEH_HTML::tr(
-            '', '',
-            "tckt-slctr-tbl-tr {$status_class}{$this->ticket_datetime_classes} " . espresso_get_object_css_class($this->ticket)
-        );
-        /**
-         * Allow plugins to hook in and abort the generation and display of the contents of this
-         * row to do something else if they want.
-         * For an addon to abort things, all they have to do is register a filter with this hook, and
-         * return a value that is NOT false.  Whatever is returned gets echoed instead of the
-         * current row.
-         *
-         * @var string|bool
-         */
-        $new_row_cells_content = apply_filters(
-            'FHEE__ticket_selector_chart_template__do_ticket_inside_row',
-            false,
-            $this->ticket,
-            $max,
-            $min,
-            $this->required_ticket_sold_out,
-            $ticket_price,
-            $ticket_bundle,
-            $ticket_status,
-            $status_class
-        );
-        if ($new_row_cells_content !== false) {
-            return $ticket_selector_row_html
-                   . $new_row_cells_content
-                   . \EEH_HTML::trx();
-        }
-        $this->hidden_input_qty = $this->max_atndz > 1 ? true : false;
-
-        $ticket_selector_row_html .= $this->ticketNameTableCell();
-        $ticket_selector_row_html .= $this->ticketPriceTableCell($ticket_price, $ticket_bundle);
-        $ticket_selector_row_html .= \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-qty cntr');
-        $this->setTicketStatusDisplay($tkt_status, $ticket_status, $remaining);
-        if (empty($this->ticket_status_display)) {
-            if ($this->max_atndz === 1) {
-                // only ONE attendee is allowed to register at a time
-                $ticket_selector_row_html .= $this->onlyOneAttendeeCanRegister();
-            } else if ($max > 0) {
-                $ticket_selector_row_html .= $this->ticketQuantitySelector($min, $max);
-            }
-        }
-        $ticket_selector_row_html .= $this->ticket_status_display;
-        $ticket_selector_row_html .= $this->ticketQtyAndIdHiddenInputs();
-        $ticket_selector_row_html .= $this->ticket_details->display($ticket_price, $remaining, $this->cols);
-        $ticket_selector_row_html .= \EEH_HTML::tdx();
-        $ticket_selector_row_html .= \EEH_HTML::trx();
-
-
-        $this->row++;
-        return $ticket_selector_row_html;
-    }
-
-
-
-    /**
-     * setTicketMinAndMax
-     *
-     * @param int $remaining
-     * @return array
-     * @throws EE_Error
-     */
-    protected function setTicketMinAndMax($remaining)
-    {
-        // offer the number of $tickets_remaining or $this->max_atndz, whichever is smaller
-        $max = min($remaining, $this->max_atndz);
-        // but... we also want to restrict the number of tickets by the ticket max setting,
-        // however, the max still can't be higher than what was just set above
-        $max = $this->ticket->max() > 0 ? min($this->ticket->max(), $max) : $max;
-        // and we also want to restrict the minimum number of tickets by the ticket min setting
-        $min = $this->ticket->min() > 0 ? $this->ticket->min() : 0;
-        // and if the ticket is required, then make sure that min qty is at least 1
-        $min = $this->ticket->required() ? max($min, 1) : $min;
-        return array($min, $max);
-    }
-
-
-
-    /**
-     * getTicketPriceDetails
-     *
-     * @return array
-     * @throws EE_Error
-     */
-    protected function getTicketPriceDetails()
-    {
-        $ticket_price = $this->tax_settings->prices_displayed_including_taxes
-            ? $this->ticket->get_ticket_total_with_taxes()
-            : $this->ticket->get_ticket_subtotal();
-        $ticket_bundle = false;
-        $ticket_min = $this->ticket->min();
-        // for ticket bundles, set min and max qty the same
-        if ($ticket_min !== 0 && $ticket_min === $this->ticket->max()) {
-            $ticket_price *= $ticket_min;
-            $ticket_bundle = true;
-        }
-        $ticket_price = apply_filters(
-            'FHEE__ticket_selector_chart_template__ticket_price',
-            $ticket_price,
-            $this->ticket
-        );
-        return array($ticket_price, $ticket_bundle);
-    }
-
-
-
-
-    /**
-     * ticketNameTableCell
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    protected function ticketNameTableCell()
-    {
-        $html = \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-name');
-        $html .= \EEH_HTML::strong($this->ticket->get_pretty('TKT_name'));
-        $html .= $this->ticket_details->getShowHideLinks();
-        if ($this->ticket->required()) {
-            $html .= \EEH_HTML::p(
-                    apply_filters(
-                            'FHEE__ticket_selector_chart_template__ticket_required_message',
-                            esc_html__('This ticket is required and must be purchased.', 'event_espresso')
-                    ),
-                    '', 'ticket-required-pg'
-            );
-        }
-        $html .= \EEH_HTML::tdx();
-        return $html;
-    }
-
-
-
-    /**
-     * ticketPriceTableCell
-     *
-     * @param float $ticket_price
-     * @param bool  $ticket_bundle
-     * @return string
-     * @throws EE_Error
-     */
-    protected function ticketPriceTableCell($ticket_price, $ticket_bundle)
-    {
-        $html = '';
-        if (apply_filters('FHEE__ticket_selector_chart_template__display_ticket_price_details', true)) {
-            $html .= \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-price jst-rght');
-            $html .= \EEH_Template::format_currency($ticket_price);
-            $html .= $this->ticket->taxable()
-                ? \EEH_HTML::span( '*', '', 'taxable-tickets-asterisk grey-text' )
-                : '';
-            $html .= ' ';
-            $html .= \EEH_HTML::span(
-                $ticket_bundle
-                    ? apply_filters(
-                        'FHEE__ticket_selector_chart_template__per_ticket_bundle_text',
-                        __(' / bundle', 'event_espresso')
-                    )
-                    : apply_filters(
-                        'FHEE__ticket_selector_chart_template__per_ticket_text',
-                        __('', 'event_espresso')
-                    ),
-                '', 'smaller-text no-bold'
-            );
-            $html .= ' ';
-            $html .= \EEH_HTML::tdx();
-            $this->cols++;
-        }
-        return $html;
-    }
-
-
-
-    /**
-     * onlyOneAttendeeCanRegister
-     *
-     * @return string
-     */
-    protected function onlyOneAttendeeCanRegister()
-    {
-        // display submit button since we have tickets available
-        add_filter('FHEE__EE_Ticket_Selector__display_ticket_selector_submit', '__return_true');
-        $this->hidden_input_qty = false;
-        $html = '<input type="radio" name="tkt-slctr-qty-' . $this->EVT_ID . '"';
-        $html .= ' id="ticket-selector-tbl-qty-slct-' . $this->EVT_ID . '-' . $this->row . '"';
-        $html .= ' class="ticket-selector-tbl-qty-slct" value="' . $this->row . '-1"';
-        $html .= $this->total_tickets === 1 ? ' checked="checked"' : '';
-        $html .= ' title=""/>';
-        return $html;
-    }
-
-
-
-    /**
-     * ticketQuantitySelector
-     *
-     * @param int $min
-     * @param int $max
-     * @return string
-     * @throws EE_Error
-     */
-    protected function ticketQuantitySelector($min = 0, $max = 0)
-    {
-        // display submit button since we have tickets available
-        add_filter('FHEE__EE_Ticket_Selector__display_ticket_selector_submit', '__return_true');
-        $this->hidden_input_qty = false;
-        $html = '<select name="tkt-slctr-qty-' . $this->EVT_ID . '[]"';
-        $html .= ' id="ticket-selector-tbl-qty-slct-' . $this->EVT_ID . '-' . $this->row . '"';
-        $html .= ' class="ticket-selector-tbl-qty-slct">';
-        // this ensures that non-required tickets with non-zero MIN QTYs don't HAVE to be purchased
-        if ($min !== 0 && ! $this->ticket->required()) {
-            $html .= '<option value="0">&nbsp;0&nbsp;</option>';
-        }
-        // offer ticket quantities from the min to the max
-        for ($i = $min; $i <= $max; $i++) {
-            $html .= '<option value="' . $i . '">&nbsp;' . $i . '&nbsp;</option>';
-        }
-        $html .= '</select>';
-        return $html;
-    }
-
-
-
-    /**
-     * getHiddenInputs
-     *
-     * @return string
-     * @throws EE_Error
-     */
-    protected function ticketQtyAndIdHiddenInputs()
-    {
-        $html = '';
-        // depending on group reg we need to change the format for qty
-        if ($this->hidden_input_qty) {
-            $html .= '<input type="hidden" name="tkt-slctr-qty-' . $this->EVT_ID . '[]" value="0"/>';
-        }
-        $html .= '<input type="hidden" name="tkt-slctr-ticket-id-' . $this->EVT_ID . '[]"';
-        $html .= ' value="' . $this->ticket->ID() . '"/>';
-        return $html;
-    }
+	/**
+	 * @var TicketDetails $ticket_details
+	 */
+	protected $ticket_details;
+
+	/**
+	 * @var \EE_Ticket_Selector_Config $template_settings
+	 */
+	protected $template_settings;
+
+	/**
+	 * @var \EE_Tax_Config $tax_settings
+	 */
+	protected $tax_settings;
+
+	/**
+	 * @var boolean $prices_displayed_including_taxes
+	 */
+	protected $prices_displayed_including_taxes;
+
+	/**
+	 * @var int $row
+	 */
+	protected $row;
+
+	/**
+	 * @var int $cols
+	 */
+	protected $cols;
+
+	/**
+	 * @var boolean $hidden_input_qty
+	 */
+	protected $hidden_input_qty;
+
+	/**
+	 * @var string $ticket_datetime_classes
+	 */
+	protected $ticket_datetime_classes;
+
+
+
+	/**
+	 * TicketDetails constructor.
+	 *
+	 * @param TicketDetails  $ticket_details
+	 * @param \EE_Tax_Config $tax_settings
+	 * @param int            $total_tickets
+	 * @param int            $max_atndz
+	 * @param int            $row
+	 * @param int            $cols
+	 * @param boolean        $required_ticket_sold_out
+	 * @param string         $event_status
+	 * @param string         $ticket_datetime_classes
+	 * @throws EE_Error
+	 * @throws UnexpectedEntityException
+	 */
+	public function __construct(
+		TicketDetails $ticket_details,
+		\EE_Tax_Config $tax_settings,
+		$total_tickets,
+		$max_atndz,
+		$row,
+		$cols,
+		$required_ticket_sold_out,
+		$event_status,
+		$ticket_datetime_classes
+	) {
+		$this->ticket = $ticket_details->getTicket();
+		$this->ticket_details = $ticket_details;
+		$this->template_settings = $ticket_details->getTemplateSettings();
+		$this->tax_settings = $tax_settings;
+		$this->total_tickets = $total_tickets;
+		$this->max_atndz = $max_atndz;
+		$this->row = $row;
+		$this->cols = $cols;
+		$this->date_format = $ticket_details->getDateFormat();
+		$this->ticket_datetime_classes = $ticket_datetime_classes;
+		parent::__construct($this->ticket, $max_atndz, $this->date_format, $event_status, $required_ticket_sold_out);
+	}
+
+
+
+	/**
+	 * other ticket rows will need to know if a required ticket is sold out,
+	 * so that they are not offered for sale
+	 *
+	 * @return boolean
+	 */
+	public function getRequiredTicketSoldOut()
+	{
+		return $this->required_ticket_sold_out;
+	}
+
+
+
+	/**
+	 * @return int
+	 */
+	public function getCols()
+	{
+		return $this->cols;
+	}
+
+
+
+	/**
+	 * getHtml
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	public function getHtml()
+	{
+		$min = 0;
+		$max = $this->ticket->max();
+		$remaining = $this->ticket->remaining();
+		if ($this->ticket->is_on_sale() && $this->ticket->is_remaining()) {
+			list($min, $max) = $this->setTicketMinAndMax($remaining);
+		} else {
+			// set flag if ticket is required (flag is set to start date so that future tickets are not blocked)
+			$this->required_ticket_sold_out = $this->ticket->required() && ! $remaining
+				? $this->ticket->start_date()
+				: $this->required_ticket_sold_out;
+		}
+		list($ticket_price, $ticket_bundle) = $this->getTicketPriceDetails();
+		list($tkt_status, $ticket_status, $status_class) = $this->getTicketStatusClasses($remaining);
+		/**
+		 * Allow plugins to hook in and abort the generation and display of this row to do
+		 * something else if they want.
+		 * For an addon to abort things, all they have to do is register a filter with this hook, and
+		 * return a value that is NOT false.  Whatever is returned gets echoed instead of the
+		 * current row.
+		 *
+		 * @var string|bool
+		 */
+		$ticket_selector_row_html = apply_filters(
+			'FHEE__ticket_selector_chart_template__do_ticket_entire_row',
+			false,
+			$this->ticket,
+			$max,
+			$min,
+			$this->required_ticket_sold_out,
+			$ticket_price,
+			$ticket_bundle,
+			$ticket_status,
+			$status_class
+		);
+		if ($ticket_selector_row_html !== false) {
+			return $ticket_selector_row_html;
+		}
+		$ticket_selector_row_html = \EEH_HTML::tr(
+			'', '',
+			"tckt-slctr-tbl-tr {$status_class}{$this->ticket_datetime_classes} " . espresso_get_object_css_class($this->ticket)
+		);
+		/**
+		 * Allow plugins to hook in and abort the generation and display of the contents of this
+		 * row to do something else if they want.
+		 * For an addon to abort things, all they have to do is register a filter with this hook, and
+		 * return a value that is NOT false.  Whatever is returned gets echoed instead of the
+		 * current row.
+		 *
+		 * @var string|bool
+		 */
+		$new_row_cells_content = apply_filters(
+			'FHEE__ticket_selector_chart_template__do_ticket_inside_row',
+			false,
+			$this->ticket,
+			$max,
+			$min,
+			$this->required_ticket_sold_out,
+			$ticket_price,
+			$ticket_bundle,
+			$ticket_status,
+			$status_class
+		);
+		if ($new_row_cells_content !== false) {
+			return $ticket_selector_row_html
+				   . $new_row_cells_content
+				   . \EEH_HTML::trx();
+		}
+		$this->hidden_input_qty = $this->max_atndz > 1 ? true : false;
+
+		$ticket_selector_row_html .= $this->ticketNameTableCell();
+		$ticket_selector_row_html .= $this->ticketPriceTableCell($ticket_price, $ticket_bundle);
+		$ticket_selector_row_html .= \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-qty cntr');
+		$this->setTicketStatusDisplay($tkt_status, $ticket_status, $remaining);
+		if (empty($this->ticket_status_display)) {
+			if ($this->max_atndz === 1) {
+				// only ONE attendee is allowed to register at a time
+				$ticket_selector_row_html .= $this->onlyOneAttendeeCanRegister();
+			} else if ($max > 0) {
+				$ticket_selector_row_html .= $this->ticketQuantitySelector($min, $max);
+			}
+		}
+		$ticket_selector_row_html .= $this->ticket_status_display;
+		$ticket_selector_row_html .= $this->ticketQtyAndIdHiddenInputs();
+		$ticket_selector_row_html .= $this->ticket_details->display($ticket_price, $remaining, $this->cols);
+		$ticket_selector_row_html .= \EEH_HTML::tdx();
+		$ticket_selector_row_html .= \EEH_HTML::trx();
+
+
+		$this->row++;
+		return $ticket_selector_row_html;
+	}
+
+
+
+	/**
+	 * setTicketMinAndMax
+	 *
+	 * @param int $remaining
+	 * @return array
+	 * @throws EE_Error
+	 */
+	protected function setTicketMinAndMax($remaining)
+	{
+		// offer the number of $tickets_remaining or $this->max_atndz, whichever is smaller
+		$max = min($remaining, $this->max_atndz);
+		// but... we also want to restrict the number of tickets by the ticket max setting,
+		// however, the max still can't be higher than what was just set above
+		$max = $this->ticket->max() > 0 ? min($this->ticket->max(), $max) : $max;
+		// and we also want to restrict the minimum number of tickets by the ticket min setting
+		$min = $this->ticket->min() > 0 ? $this->ticket->min() : 0;
+		// and if the ticket is required, then make sure that min qty is at least 1
+		$min = $this->ticket->required() ? max($min, 1) : $min;
+		return array($min, $max);
+	}
+
+
+
+	/**
+	 * getTicketPriceDetails
+	 *
+	 * @return array
+	 * @throws EE_Error
+	 */
+	protected function getTicketPriceDetails()
+	{
+		$ticket_price = $this->tax_settings->prices_displayed_including_taxes
+			? $this->ticket->get_ticket_total_with_taxes()
+			: $this->ticket->get_ticket_subtotal();
+		$ticket_bundle = false;
+		$ticket_min = $this->ticket->min();
+		// for ticket bundles, set min and max qty the same
+		if ($ticket_min !== 0 && $ticket_min === $this->ticket->max()) {
+			$ticket_price *= $ticket_min;
+			$ticket_bundle = true;
+		}
+		$ticket_price = apply_filters(
+			'FHEE__ticket_selector_chart_template__ticket_price',
+			$ticket_price,
+			$this->ticket
+		);
+		return array($ticket_price, $ticket_bundle);
+	}
+
+
+
+
+	/**
+	 * ticketNameTableCell
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function ticketNameTableCell()
+	{
+		$html = \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-name');
+		$html .= \EEH_HTML::strong($this->ticket->get_pretty('TKT_name'));
+		$html .= $this->ticket_details->getShowHideLinks();
+		if ($this->ticket->required()) {
+			$html .= \EEH_HTML::p(
+					apply_filters(
+							'FHEE__ticket_selector_chart_template__ticket_required_message',
+							esc_html__('This ticket is required and must be purchased.', 'event_espresso')
+					),
+					'', 'ticket-required-pg'
+			);
+		}
+		$html .= \EEH_HTML::tdx();
+		return $html;
+	}
+
+
+
+	/**
+	 * ticketPriceTableCell
+	 *
+	 * @param float $ticket_price
+	 * @param bool  $ticket_bundle
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function ticketPriceTableCell($ticket_price, $ticket_bundle)
+	{
+		$html = '';
+		if (apply_filters('FHEE__ticket_selector_chart_template__display_ticket_price_details', true)) {
+			$html .= \EEH_HTML::td('', '', 'tckt-slctr-tbl-td-price jst-rght');
+			$html .= \EEH_Template::format_currency($ticket_price);
+			$html .= $this->ticket->taxable()
+				? \EEH_HTML::span( '*', '', 'taxable-tickets-asterisk grey-text' )
+				: '';
+			$html .= '&nbsp;';
+			$html .= \EEH_HTML::span(
+				$ticket_bundle
+					? apply_filters(
+						'FHEE__ticket_selector_chart_template__per_ticket_bundle_text',
+						__(' / bundle', 'event_espresso')
+					)
+					: apply_filters(
+						'FHEE__ticket_selector_chart_template__per_ticket_text',
+						__('', 'event_espresso')
+					),
+				'', 'smaller-text no-bold'
+			);
+			$html .= '&nbsp;';
+			$html .= \EEH_HTML::tdx();
+			$this->cols++;
+		}
+		return $html;
+	}
+
+
+
+	/**
+	 * onlyOneAttendeeCanRegister
+	 *
+	 * @return string
+	 */
+	protected function onlyOneAttendeeCanRegister()
+	{
+		// display submit button since we have tickets available
+		add_filter('FHEE__EE_Ticket_Selector__display_ticket_selector_submit', '__return_true');
+		$this->hidden_input_qty = false;
+		$html = '<input type="radio" name="tkt-slctr-qty-' . $this->EVT_ID . '"';
+		$html .= ' id="ticket-selector-tbl-qty-slct-' . $this->EVT_ID . '-' . $this->row . '"';
+		$html .= ' class="ticket-selector-tbl-qty-slct" value="' . $this->row . '-1"';
+		$html .= $this->total_tickets === 1 ? ' checked="checked"' : '';
+		$html .= ' title=""/>';
+		return $html;
+	}
+
+
+
+	/**
+	 * ticketQuantitySelector
+	 *
+	 * @param int $min
+	 * @param int $max
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function ticketQuantitySelector($min = 0, $max = 0)
+	{
+		// display submit button since we have tickets available
+		add_filter('FHEE__EE_Ticket_Selector__display_ticket_selector_submit', '__return_true');
+		$this->hidden_input_qty = false;
+		$html = '<select name="tkt-slctr-qty-' . $this->EVT_ID . '[]"';
+		$html .= ' id="ticket-selector-tbl-qty-slct-' . $this->EVT_ID . '-' . $this->row . '"';
+		$html .= ' class="ticket-selector-tbl-qty-slct">';
+		// this ensures that non-required tickets with non-zero MIN QTYs don't HAVE to be purchased
+		if ($min !== 0 && ! $this->ticket->required()) {
+			$html .= '<option value="0">&nbsp;0&nbsp;</option>';
+		}
+		// offer ticket quantities from the min to the max
+		for ($i = $min; $i <= $max; $i++) {
+			$html .= '<option value="' . $i . '">&nbsp;' . $i . '&nbsp;</option>';
+		}
+		$html .= '</select>';
+		return $html;
+	}
+
+
+
+	/**
+	 * getHiddenInputs
+	 *
+	 * @return string
+	 * @throws EE_Error
+	 */
+	protected function ticketQtyAndIdHiddenInputs()
+	{
+		$html = '';
+		// depending on group reg we need to change the format for qty
+		if ($this->hidden_input_qty) {
+			$html .= '<input type="hidden" name="tkt-slctr-qty-' . $this->EVT_ID . '[]" value="0"/>';
+		}
+		$html .= '<input type="hidden" name="tkt-slctr-ticket-id-' . $this->EVT_ID . '[]"';
+		$html .= ' value="' . $this->ticket->ID() . '"/>';
+		return $html;
+	}
 
 }
 // End of file TicketSelectorRowStandard.php