eventespresso / event-espresso-core

core/EE_System.core.php

Spacing +29 added lines, -29 removed lines

@@ -141,7 +141,7 @@ 
         EE_Maintenance_Mode $maintenance_mode = null
     ) {
         // check if class object is instantiated
-        if (! self::$_instance instanceof EE_System) {
+        if ( ! self::$_instance instanceof EE_System) {
             self::$_instance = new self($registry, $loader, $request, $maintenance_mode);
         }
         return self::$_instance;
@@ -263,7 +263,7 @@ 
         $this->capabilities = $this->loader->getShared('EE_Capabilities');
         add_action(
             'AHEE__EE_Capabilities__init_caps__before_initialization',
-            function () {
+            function() {
                 LoaderFactory::getLoader()->getShared('EE_Payment_Method_Manager');
             }
         );
@@ -304,7 +304,7 @@ 
     {
         // set autoloaders for all of the classes implementing EEI_Plugin_API
         // which provide helpers for EE plugin authors to more easily register certain components with EE.
-        EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_LIBRARIES . 'plugin_api');
+        EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_LIBRARIES.'plugin_api');
         $this->loader->getShared('EE_Request_Handler');
     }
 
@@ -324,14 +324,14 @@ 
         $load_callback,
         $plugin_file_constant
     ) {
-        if (! defined($version_constant)) {
+        if ( ! defined($version_constant)) {
             return;
         }
         $addon_version = constant($version_constant);
         if ($addon_version && version_compare($addon_version, $min_version_required, '<')) {
             remove_action('AHEE__EE_System__load_espresso_addons', $load_callback);
-            if (! function_exists('deactivate_plugins')) {
-                require_once ABSPATH . 'wp-admin/includes/plugin.php';
+            if ( ! function_exists('deactivate_plugins')) {
+                require_once ABSPATH.'wp-admin/includes/plugin.php';
             }
             deactivate_plugins(plugin_basename(constant($plugin_file_constant)));
             unset($_GET['activate'], $_REQUEST['activate'], $_GET['activate-multi'], $_REQUEST['activate-multi']);
@@ -345,7 +345,7 @@ 
                     $min_version_required
                 ),
                 __FILE__,
-                __FUNCTION__ . "({$addon_name})",
+                __FUNCTION__."({$addon_name})",
                 __LINE__
             );
             EE_Error::get_notices(false, true);
@@ -396,7 +396,7 @@ 
                 true
             )
         ) {
-            include_once EE_THIRD_PARTY . 'wp-api-basic-auth/basic-auth.php';
+            include_once EE_THIRD_PARTY.'wp-api-basic-auth/basic-auth.php';
         }
         do_action('AHEE__EE_System__load_espresso_addons__complete');
     }
@@ -498,11 +498,11 @@ 
     private function fix_espresso_db_upgrade_option($espresso_db_update = null)
     {
         do_action('FHEE__EE_System__manage_fix_espresso_db_upgrade_option__begin', $espresso_db_update);
-        if (! $espresso_db_update) {
+        if ( ! $espresso_db_update) {
             $espresso_db_update = get_option('espresso_db_update');
         }
         // check that option is an array
-        if (! is_array($espresso_db_update)) {
+        if ( ! is_array($espresso_db_update)) {
             // if option is FALSE, then it never existed
             if ($espresso_db_update === false) {
                 // make $espresso_db_update an array and save option with autoload OFF
@@ -522,10 +522,10 @@ 
                     // so it must be numerically-indexed, where values are versions installed...
                     // fix it!
                     $version_string = $should_be_array;
-                    $corrected_db_update[ $version_string ] = array('unknown-date');
+                    $corrected_db_update[$version_string] = array('unknown-date');
                 } else {
                     // ok it checks out
-                    $corrected_db_update[ $should_be_version_string ] = $should_be_array;
+                    $corrected_db_update[$should_be_version_string] = $should_be_array;
                 }
             }
             $espresso_db_update = $corrected_db_update;
@@ -608,13 +608,13 @@ 
      */
     public function update_list_of_installed_versions($version_history = null, $current_version_to_add = null)
     {
-        if (! $version_history) {
+        if ( ! $version_history) {
             $version_history = $this->fix_espresso_db_upgrade_option($version_history);
         }
         if ($current_version_to_add === null) {
             $current_version_to_add = espresso_version();
         }
-        $version_history[ $current_version_to_add ][] = date('Y-m-d H:i:s', time());
+        $version_history[$current_version_to_add][] = date('Y-m-d H:i:s', time());
         // re-save
         return update_option('espresso_db_update', $version_history);
     }
@@ -704,7 +704,7 @@ 
         if ($activation_history_for_addon) {
             // it exists, so this isn't a completely new install
             // check if this version already in that list of previously installed versions
-            if (! isset($activation_history_for_addon[ $version_to_upgrade_to ])) {
+            if ( ! isset($activation_history_for_addon[$version_to_upgrade_to])) {
                 // it a version we haven't seen before
                 if ($version_is_higher === 1) {
                     $req_type = EE_System::req_type_upgrade;
@@ -782,7 +782,7 @@ 
             foreach ($activation_history as $version => $times_activated) {
                 // check there is a record of when this version was activated. Otherwise,
                 // mark it as unknown
-                if (! $times_activated) {
+                if ( ! $times_activated) {
                     $times_activated = array('unknown-date');
                 }
                 if (is_string($times_activated)) {
@@ -813,7 +813,7 @@ 
     {
         $notices = EE_Error::get_notices(false);
         // if current user is an admin and it's not an ajax or rest request
-        if (! isset($notices['errors'])
+        if ( ! isset($notices['errors'])
             && $this->request->isAdmin()
             && apply_filters(
                 'FHEE__EE_System__redirect_to_about_ee__do_redirect',
@@ -883,7 +883,7 @@ 
     private function _parse_model_names()
     {
         // get all the files in the EE_MODELS folder that end in .model.php
-        $models = glob(EE_MODELS . '*.model.php');
+        $models = glob(EE_MODELS.'*.model.php');
         $model_names = array();
         $non_abstract_db_models = array();
         foreach ($models as $model) {
@@ -892,9 +892,9 @@ 
             $short_name = str_replace('EEM_', '', $classname);
             $reflectionClass = new ReflectionClass($classname);
             if ($reflectionClass->isSubclassOf('EEM_Base') && ! $reflectionClass->isAbstract()) {
-                $non_abstract_db_models[ $short_name ] = $classname;
+                $non_abstract_db_models[$short_name] = $classname;
             }
-            $model_names[ $short_name ] = $classname;
+            $model_names[$short_name] = $classname;
         }
         $this->registry->models = apply_filters('FHEE__EE_System__parse_model_names', $model_names);
         $this->registry->non_abstract_db_models = apply_filters(
@@ -929,7 +929,7 @@ 
             )
         );
         if ($domain->isCaffeinated()) {
-            require_once EE_CAFF_PATH . 'brewing_regular.php';
+            require_once EE_CAFF_PATH.'brewing_regular.php';
         }
     }
 
@@ -997,7 +997,7 @@ 
         $class_names = EEH_Class_Tools::get_class_names_for_all_callbacks_on_hook(
             'AHEE__EE_System__register_shortcodes_modules_and_addons'
         );
-        if (! empty($class_names)) {
+        if ( ! empty($class_names)) {
             $msg = __(
                 'The following plugins, addons, or modules appear to be incompatible with this version of Event Espresso and were automatically deactivated to avoid fatal errors:',
                 'event_espresso'
@@ -1009,7 +1009,7 @@ 
                             array('EE_', 'EEM_', 'EED_', 'EES_', 'EEW_'),
                             '',
                             $class_name
-                        ) . '</b></li>';
+                        ).'</b></li>';
             }
             $msg .= '</ul>';
             $msg .= __(
@@ -1078,7 +1078,7 @@ 
     private function _deactivate_incompatible_addons()
     {
         $incompatible_addons = get_option('ee_incompatible_addons', array());
-        if (! empty($incompatible_addons)) {
+        if ( ! empty($incompatible_addons)) {
             $active_plugins = get_option('active_plugins', array());
             foreach ($active_plugins as $active_plugin) {
                 foreach ($incompatible_addons as $incompatible_addon) {
@@ -1145,7 +1145,7 @@ 
     {
         do_action('AHEE__EE_System__load_controllers__start');
         // let's get it started
-        if (! $this->maintenance_mode->level()
+        if ( ! $this->maintenance_mode->level()
             && ($this->request->isFrontend() || $this->request->isFrontAjax())
         ) {
             do_action('AHEE__EE_System__load_controllers__load_front_controllers');
@@ -1198,7 +1198,7 @@ 
         do_action('AHEE__EE_System__core_loaded_and_ready');
         // always load template tags, because it's faster than checking if it's a front-end request, and many page
         // builders require these even on the front-end
-        require_once EE_PUBLIC . 'template_tags.php';
+        require_once EE_PUBLIC.'template_tags.php';
         // load handler for GraphQL requests
         if (class_exists('WPGraphQL') && $this->request->isGQL()) {
             try {
@@ -1275,13 +1275,13 @@ 
     public static function do_not_cache()
     {
         // set no cache constants
-        if (! defined('DONOTCACHEPAGE')) {
+        if ( ! defined('DONOTCACHEPAGE')) {
             define('DONOTCACHEPAGE', true);
         }
-        if (! defined('DONOTCACHCEOBJECT')) {
+        if ( ! defined('DONOTCACHCEOBJECT')) {
             define('DONOTCACHCEOBJECT', true);
         }
-        if (! defined('DONOTCACHEDB')) {
+        if ( ! defined('DONOTCACHEDB')) {
             define('DONOTCACHEDB', true);
         }
         // add no cache headers

Indentation +1320 added lines, -1320 removed lines

@@ -27,1324 +27,1324 @@
 final class EE_System implements ResettableInterface
 {
 
-    /**
-     * indicates this is a 'normal' request. Ie, not activation, nor upgrade, nor activation.
-     * So examples of this would be a normal GET request on the frontend or backend, or a POST, etc
-     */
-    const req_type_normal = 0;
-
-    /**
-     * Indicates this is a brand new installation of EE so we should install
-     * tables and default data etc
-     */
-    const req_type_new_activation = 1;
-
-    /**
-     * we've detected that EE has been reactivated (or EE was activated during maintenance mode,
-     * and we just exited maintenance mode). We MUST check the database is setup properly
-     * and that default data is setup too
-     */
-    const req_type_reactivation = 2;
-
-    /**
-     * indicates that EE has been upgraded since its previous request.
-     * We may have data migration scripts to call and will want to trigger maintenance mode
-     */
-    const req_type_upgrade = 3;
-
-    /**
-     * TODO  will detect that EE has been DOWNGRADED. We probably don't want to run in this case...
-     */
-    const req_type_downgrade = 4;
-
-    /**
-     * @deprecated since version 4.6.0.dev.006
-     * Now whenever a new_activation is detected the request type is still just
-     * new_activation (same for reactivation, upgrade, downgrade etc), but if we'r ein maintenance mode
-     * EE_System::initialize_db_if_no_migrations_required and EE_Addon::initialize_db_if_no_migrations_required
-     * will instead enqueue that EE plugin's db initialization for when we're taken out of maintenance mode.
-     * (Specifically, when the migration manager indicates migrations are finished
-     * EE_Data_Migration_Manager::initialize_db_for_enqueued_ee_plugins() will be called)
-     */
-    const req_type_activation_but_not_installed = 5;
-
-    /**
-     * option prefix for recording the activation history (like core's "espresso_db_update") of addons
-     */
-    const addon_activation_history_option_prefix = 'ee_addon_activation_history_';
-
-    /**
-     * @var EE_System $_instance
-     */
-    private static $_instance;
-
-    /**
-     * @var EE_Registry $registry
-     */
-    private $registry;
-
-    /**
-     * @var LoaderInterface $loader
-     */
-    private $loader;
-
-    /**
-     * @var EE_Capabilities $capabilities
-     */
-    private $capabilities;
-
-    /**
-     * @var RequestInterface $request
-     */
-    private $request;
-
-    /**
-     * @var EE_Maintenance_Mode $maintenance_mode
-     */
-    private $maintenance_mode;
-
-    /**
-     * Stores which type of request this is, options being one of the constants on EE_System starting with req_type_*.
-     * It can be a brand-new activation, a reactivation, an upgrade, a downgrade, or a normal request.
-     *
-     * @var int $_req_type
-     */
-    private $_req_type;
-
-    /**
-     * Whether or not there was a non-micro version change in EE core version during this request
-     *
-     * @var boolean $_major_version_change
-     */
-    private $_major_version_change = false;
-
-    /**
-     * A Context DTO dedicated solely to identifying the current request type.
-     *
-     * @var RequestTypeContextCheckerInterface $request_type
-     */
-    private $request_type;
-
-
-    /**
-     * @singleton method used to instantiate class object
-     * @param EE_Registry|null         $registry
-     * @param LoaderInterface|null     $loader
-     * @param RequestInterface|null    $request
-     * @param EE_Maintenance_Mode|null $maintenance_mode
-     * @return EE_System
-     */
-    public static function instance(
-        EE_Registry $registry = null,
-        LoaderInterface $loader = null,
-        RequestInterface $request = null,
-        EE_Maintenance_Mode $maintenance_mode = null
-    ) {
-        // check if class object is instantiated
-        if (! self::$_instance instanceof EE_System) {
-            self::$_instance = new self($registry, $loader, $request, $maintenance_mode);
-        }
-        return self::$_instance;
-    }
-
-
-    /**
-     * resets the instance and returns it
-     *
-     * @return EE_System
-     */
-    public static function reset()
-    {
-        self::$_instance->_req_type = null;
-        // make sure none of the old hooks are left hanging around
-        remove_all_actions('AHEE__EE_System__perform_activations_upgrades_and_migrations');
-        // we need to reset the migration manager in order for it to detect DMSs properly
-        EE_Data_Migration_Manager::reset();
-        self::instance()->detect_activations_or_upgrades();
-        self::instance()->perform_activations_upgrades_and_migrations();
-        return self::instance();
-    }
-
-
-    /**
-     * sets hooks for running rest of system
-     * provides "AHEE__EE_System__construct__complete" hook for EE Addons to use as their starting point
-     * starting EE Addons from any other point may lead to problems
-     *
-     * @param EE_Registry         $registry
-     * @param LoaderInterface     $loader
-     * @param RequestInterface    $request
-     * @param EE_Maintenance_Mode $maintenance_mode
-     */
-    private function __construct(
-        EE_Registry $registry,
-        LoaderInterface $loader,
-        RequestInterface $request,
-        EE_Maintenance_Mode $maintenance_mode
-    ) {
-        $this->registry = $registry;
-        $this->loader = $loader;
-        $this->request = $request;
-        $this->maintenance_mode = $maintenance_mode;
-        do_action('AHEE__EE_System__construct__begin', $this);
-        add_action(
-            'AHEE__EE_Bootstrap__load_espresso_addons',
-            array($this, 'loadCapabilities'),
-            5
-        );
-        add_action(
-            'AHEE__EE_Bootstrap__load_espresso_addons',
-            array($this, 'loadCommandBus'),
-            7
-        );
-        add_action(
-            'AHEE__EE_Bootstrap__load_espresso_addons',
-            array($this, 'loadPluginApi'),
-            9
-        );
-        // allow addons to load first so that they can register autoloaders, set hooks for running DMS's, etc
-        add_action(
-            'AHEE__EE_Bootstrap__load_espresso_addons',
-            array($this, 'load_espresso_addons')
-        );
-        // when an ee addon is activated, we want to call the core hook(s) again
-        // because the newly-activated addon didn't get a chance to run at all
-        add_action('activate_plugin', array($this, 'load_espresso_addons'), 1);
-        // detect whether install or upgrade
-        add_action(
-            'AHEE__EE_Bootstrap__detect_activations_or_upgrades',
-            array($this, 'detect_activations_or_upgrades'),
-            3
-        );
-        // load EE_Config, EE_Textdomain, etc
-        add_action(
-            'AHEE__EE_Bootstrap__load_core_configuration',
-            array($this, 'load_core_configuration'),
-            5
-        );
-        // load specifications for matching routes to current request
-        add_action(
-            'AHEE__EE_Bootstrap__load_core_configuration',
-            array($this, 'loadRouteMatchSpecifications')
-        );
-        // load EE_Config, EE_Textdomain, etc
-        add_action(
-            'AHEE__EE_Bootstrap__register_shortcodes_modules_and_widgets',
-            array($this, 'register_shortcodes_modules_and_widgets'),
-            7
-        );
-        // you wanna get going? I wanna get going... let's get going!
-        add_action(
-            'AHEE__EE_Bootstrap__brew_espresso',
-            array($this, 'brew_espresso'),
-            9
-        );
-        // other housekeeping
-        // exclude EE critical pages from wp_list_pages
-        add_filter(
-            'wp_list_pages_excludes',
-            array($this, 'remove_pages_from_wp_list_pages'),
-            10
-        );
-        // ALL EE Addons should use the following hook point to attach their initial setup too
-        // it's extremely important for EE Addons to register any class autoloaders so that they can be available when the EE_Config loads
-        do_action('AHEE__EE_System__construct__complete', $this);
-    }
-
-
-    /**
-     * load and setup EE_Capabilities
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public function loadCapabilities()
-    {
-        $this->capabilities = $this->loader->getShared('EE_Capabilities');
-        add_action(
-            'AHEE__EE_Capabilities__init_caps__before_initialization',
-            function () {
-                LoaderFactory::getLoader()->getShared('EE_Payment_Method_Manager');
-            }
-        );
-    }
-
-
-    /**
-     * create and cache the CommandBus, and also add middleware
-     * The CapChecker middleware requires the use of EE_Capabilities
-     * which is why we need to load the CommandBus after Caps are set up
-     *
-     * @return void
-     * @throws EE_Error
-     */
-    public function loadCommandBus()
-    {
-        $this->loader->getShared(
-            'CommandBusInterface',
-            array(
-                null,
-                apply_filters(
-                    'FHEE__EE_Load_Espresso_Core__handle_request__CommandBus_middleware',
-                    array(
-                        $this->loader->getShared('EventEspresso\core\services\commands\middleware\CapChecker'),
-                        $this->loader->getShared('EventEspresso\core\services\commands\middleware\AddActionHook'),
-                    )
-                ),
-            )
-        );
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     */
-    public function loadPluginApi()
-    {
-        // set autoloaders for all of the classes implementing EEI_Plugin_API
-        // which provide helpers for EE plugin authors to more easily register certain components with EE.
-        EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_LIBRARIES . 'plugin_api');
-        $this->loader->getShared('EE_Request_Handler');
-    }
-
-
-    /**
-     * @param string $addon_name
-     * @param string $version_constant
-     * @param string $min_version_required
-     * @param string $load_callback
-     * @param string $plugin_file_constant
-     * @return void
-     */
-    private function deactivateIncompatibleAddon(
-        $addon_name,
-        $version_constant,
-        $min_version_required,
-        $load_callback,
-        $plugin_file_constant
-    ) {
-        if (! defined($version_constant)) {
-            return;
-        }
-        $addon_version = constant($version_constant);
-        if ($addon_version && version_compare($addon_version, $min_version_required, '<')) {
-            remove_action('AHEE__EE_System__load_espresso_addons', $load_callback);
-            if (! function_exists('deactivate_plugins')) {
-                require_once ABSPATH . 'wp-admin/includes/plugin.php';
-            }
-            deactivate_plugins(plugin_basename(constant($plugin_file_constant)));
-            unset($_GET['activate'], $_REQUEST['activate'], $_GET['activate-multi'], $_REQUEST['activate-multi']);
-            EE_Error::add_error(
-                sprintf(
-                    esc_html__(
-                        'We\'re sorry, but the Event Espresso %1$s addon was deactivated because version %2$s or higher is required with this version of Event Espresso core.',
-                        'event_espresso'
-                    ),
-                    $addon_name,
-                    $min_version_required
-                ),
-                __FILE__,
-                __FUNCTION__ . "({$addon_name})",
-                __LINE__
-            );
-            EE_Error::get_notices(false, true);
-        }
-    }
-
-
-    /**
-     * load_espresso_addons
-     * allow addons to load first so that they can set hooks for running DMS's, etc
-     * this is hooked into both:
-     *    'AHEE__EE_Bootstrap__load_core_configuration'
-     *        which runs during the WP 'plugins_loaded' action at priority 5
-     *    and the WP 'activate_plugin' hook point
-     *
-     * @access public
-     * @return void
-     */
-    public function load_espresso_addons()
-    {
-        $this->deactivateIncompatibleAddon(
-            'Wait Lists',
-            'EE_WAIT_LISTS_VERSION',
-            '1.0.0.beta.074',
-            'load_espresso_wait_lists',
-            'EE_WAIT_LISTS_PLUGIN_FILE'
-        );
-        $this->deactivateIncompatibleAddon(
-            'Automated Upcoming Event Notifications',
-            'EE_AUTOMATED_UPCOMING_EVENT_NOTIFICATION_VERSION',
-            '1.0.0.beta.091',
-            'load_espresso_automated_upcoming_event_notification',
-            'EE_AUTOMATED_UPCOMING_EVENT_NOTIFICATION_PLUGIN_FILE'
-        );
-        do_action('AHEE__EE_System__load_espresso_addons');
-        // if the WP API basic auth plugin isn't already loaded, load it now.
-        // We want it for mobile apps. Just include the entire plugin
-        // also, don't load the basic auth when a plugin is getting activated, because
-        // it could be the basic auth plugin, and it doesn't check if its methods are already defined
-        // and causes a fatal error
-        if (($this->request->isWordPressApi() || $this->request->isApi())
-            && $this->request->getRequestParam('activate') !== 'true'
-            && ! function_exists('json_basic_auth_handler')
-            && ! function_exists('json_basic_auth_error')
-            && ! in_array(
-                $this->request->getRequestParam('action'),
-                array('activate', 'activate-selected'),
-                true
-            )
-        ) {
-            include_once EE_THIRD_PARTY . 'wp-api-basic-auth/basic-auth.php';
-        }
-        do_action('AHEE__EE_System__load_espresso_addons__complete');
-    }
-
-
-    /**
-     * detect_activations_or_upgrades
-     * Checks for activation or upgrade of core first;
-     * then also checks if any registered addons have been activated or upgraded
-     * This is hooked into 'AHEE__EE_Bootstrap__detect_activations_or_upgrades'
-     * which runs during the WP 'plugins_loaded' action at priority 3
-     *
-     * @access public
-     * @return void
-     */
-    public function detect_activations_or_upgrades()
-    {
-        // first off: let's make sure to handle core
-        $this->detect_if_activation_or_upgrade();
-        foreach ($this->registry->addons as $addon) {
-            if ($addon instanceof EE_Addon) {
-                // detect teh request type for that addon
-                $addon->detect_activation_or_upgrade();
-            }
-        }
-    }
-
-
-    /**
-     * detect_if_activation_or_upgrade
-     * Takes care of detecting whether this is a brand new install or code upgrade,
-     * and either setting up the DB or setting up maintenance mode etc.
-     *
-     * @access public
-     * @return void
-     */
-    public function detect_if_activation_or_upgrade()
-    {
-        do_action('AHEE__EE_System___detect_if_activation_or_upgrade__begin');
-        // check if db has been updated, or if its a brand-new installation
-        $espresso_db_update = $this->fix_espresso_db_upgrade_option();
-        $request_type = $this->detect_req_type($espresso_db_update);
-        // EEH_Debug_Tools::printr( $request_type, '$request_type', __FILE__, __LINE__ );
-        switch ($request_type) {
-            case EE_System::req_type_new_activation:
-                do_action('AHEE__EE_System__detect_if_activation_or_upgrade__new_activation');
-                $this->_handle_core_version_change($espresso_db_update);
-                break;
-            case EE_System::req_type_reactivation:
-                do_action('AHEE__EE_System__detect_if_activation_or_upgrade__reactivation');
-                $this->_handle_core_version_change($espresso_db_update);
-                break;
-            case EE_System::req_type_upgrade:
-                do_action('AHEE__EE_System__detect_if_activation_or_upgrade__upgrade');
-                // migrations may be required now that we've upgraded
-                $this->maintenance_mode->set_maintenance_mode_if_db_old();
-                $this->_handle_core_version_change($espresso_db_update);
-                break;
-            case EE_System::req_type_downgrade:
-                do_action('AHEE__EE_System__detect_if_activation_or_upgrade__downgrade');
-                // its possible migrations are no longer required
-                $this->maintenance_mode->set_maintenance_mode_if_db_old();
-                $this->_handle_core_version_change($espresso_db_update);
-                break;
-            case EE_System::req_type_normal:
-            default:
-                break;
-        }
-        do_action('AHEE__EE_System__detect_if_activation_or_upgrade__complete');
-    }
-
-
-    /**
-     * Updates the list of installed versions and sets hooks for
-     * initializing the database later during the request
-     *
-     * @param array $espresso_db_update
-     */
-    private function _handle_core_version_change($espresso_db_update)
-    {
-        $this->update_list_of_installed_versions($espresso_db_update);
-        // get ready to verify the DB is ok (provided we aren't in maintenance mode, of course)
-        add_action(
-            'AHEE__EE_System__perform_activations_upgrades_and_migrations',
-            array($this, 'initialize_db_if_no_migrations_required')
-        );
-    }
-
-
-    /**
-     * standardizes the wp option 'espresso_db_upgrade' which actually stores
-     * information about what versions of EE have been installed and activated,
-     * NOT necessarily the state of the database
-     *
-     * @param mixed $espresso_db_update           the value of the WordPress option.
-     *                                            If not supplied, fetches it from the options table
-     * @return array the correct value of 'espresso_db_upgrade', after saving it, if it needed correction
-     */
-    private function fix_espresso_db_upgrade_option($espresso_db_update = null)
-    {
-        do_action('FHEE__EE_System__manage_fix_espresso_db_upgrade_option__begin', $espresso_db_update);
-        if (! $espresso_db_update) {
-            $espresso_db_update = get_option('espresso_db_update');
-        }
-        // check that option is an array
-        if (! is_array($espresso_db_update)) {
-            // if option is FALSE, then it never existed
-            if ($espresso_db_update === false) {
-                // make $espresso_db_update an array and save option with autoload OFF
-                $espresso_db_update = array();
-                add_option('espresso_db_update', $espresso_db_update, '', 'no');
-            } else {
-                // option is NOT FALSE but also is NOT an array, so make it an array and save it
-                $espresso_db_update = array($espresso_db_update => array());
-                update_option('espresso_db_update', $espresso_db_update);
-            }
-        } else {
-            $corrected_db_update = array();
-            // if IS an array, but is it an array where KEYS are version numbers, and values are arrays?
-            foreach ($espresso_db_update as $should_be_version_string => $should_be_array) {
-                if (is_int($should_be_version_string) && ! is_array($should_be_array)) {
-                    // the key is an int, and the value IS NOT an array
-                    // so it must be numerically-indexed, where values are versions installed...
-                    // fix it!
-                    $version_string = $should_be_array;
-                    $corrected_db_update[ $version_string ] = array('unknown-date');
-                } else {
-                    // ok it checks out
-                    $corrected_db_update[ $should_be_version_string ] = $should_be_array;
-                }
-            }
-            $espresso_db_update = $corrected_db_update;
-            update_option('espresso_db_update', $espresso_db_update);
-        }
-        do_action('FHEE__EE_System__manage_fix_espresso_db_upgrade_option__complete', $espresso_db_update);
-        return $espresso_db_update;
-    }
-
-
-    /**
-     * Does the traditional work of setting up the plugin's database and adding default data.
-     * If migration script/process did not exist, this is what would happen on every activation/reactivation/upgrade.
-     * NOTE: if we're in maintenance mode (which would be the case if we detect there are data
-     * migration scripts that need to be run and a version change happens), enqueues core for database initialization,
-     * so that it will be done when migrations are finished
-     *
-     * @param boolean $initialize_addons_too if true, we double-check addons' database tables etc too;
-     * @param boolean $verify_schema         if true will re-check the database tables have the correct schema.
-     *                                       This is a resource-intensive job
-     *                                       so we prefer to only do it when necessary
-     * @return void
-     * @throws EE_Error
-     */
-    public function initialize_db_if_no_migrations_required($initialize_addons_too = false, $verify_schema = true)
-    {
-        $request_type = $this->detect_req_type();
-        // only initialize system if we're not in maintenance mode.
-        if ($this->maintenance_mode->level() !== EE_Maintenance_Mode::level_2_complete_maintenance) {
-            /** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
-            $rewrite_rules = $this->loader->getShared(
-                'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
-            );
-            $rewrite_rules->flush();
-            if ($verify_schema) {
-                EEH_Activation::initialize_db_and_folders();
-            }
-            EEH_Activation::initialize_db_content();
-            EEH_Activation::system_initialization();
-            if ($initialize_addons_too) {
-                $this->initialize_addons();
-            }
-        } else {
-            EE_Data_Migration_Manager::instance()->enqueue_db_initialization_for('Core');
-        }
-        if ($request_type === EE_System::req_type_new_activation
-            || $request_type === EE_System::req_type_reactivation
-            || (
-                $request_type === EE_System::req_type_upgrade
-                && $this->is_major_version_change()
-            )
-        ) {
-            add_action('AHEE__EE_System__initialize_last', array($this, 'redirect_to_about_ee'), 9);
-        }
-    }
-
-
-    /**
-     * Initializes the db for all registered addons
-     *
-     * @throws EE_Error
-     */
-    public function initialize_addons()
-    {
-        // foreach registered addon, make sure its db is up-to-date too
-        foreach ($this->registry->addons as $addon) {
-            if ($addon instanceof EE_Addon) {
-                $addon->initialize_db_if_no_migrations_required();
-            }
-        }
-    }
-
-
-    /**
-     * Adds the current code version to the saved wp option which stores a list of all ee versions ever installed.
-     *
-     * @param    array  $version_history
-     * @param    string $current_version_to_add version to be added to the version history
-     * @return    boolean success as to whether or not this option was changed
-     */
-    public function update_list_of_installed_versions($version_history = null, $current_version_to_add = null)
-    {
-        if (! $version_history) {
-            $version_history = $this->fix_espresso_db_upgrade_option($version_history);
-        }
-        if ($current_version_to_add === null) {
-            $current_version_to_add = espresso_version();
-        }
-        $version_history[ $current_version_to_add ][] = date('Y-m-d H:i:s', time());
-        // re-save
-        return update_option('espresso_db_update', $version_history);
-    }
-
-
-    /**
-     * Detects if the current version indicated in the has existed in the list of
-     * previously-installed versions of EE (espresso_db_update). Does NOT modify it (ie, no side-effect)
-     *
-     * @param array $espresso_db_update array from the wp option stored under the name 'espresso_db_update'.
-     *                                  If not supplied, fetches it from the options table.
-     *                                  Also, caches its result so later parts of the code can also know whether
-     *                                  there's been an update or not. This way we can add the current version to
-     *                                  espresso_db_update, but still know if this is a new install or not
-     * @return int one of the constants on EE_System::req_type_
-     */
-    public function detect_req_type($espresso_db_update = null)
-    {
-        if ($this->_req_type === null) {
-            $espresso_db_update = ! empty($espresso_db_update)
-                ? $espresso_db_update
-                : $this->fix_espresso_db_upgrade_option();
-            $this->_req_type = EE_System::detect_req_type_given_activation_history(
-                $espresso_db_update,
-                'ee_espresso_activation',
-                espresso_version()
-            );
-            $this->_major_version_change = $this->_detect_major_version_change($espresso_db_update);
-            $this->request->setIsActivation($this->_req_type !== EE_System::req_type_normal);
-        }
-        return $this->_req_type;
-    }
-
-
-    /**
-     * Returns whether or not there was a non-micro version change (ie, change in either
-     * the first or second number in the version. Eg 4.9.0.rc.001 to 4.10.0.rc.000,
-     * but not 4.9.0.rc.0001 to 4.9.1.rc.0001
-     *
-     * @param $activation_history
-     * @return bool
-     */
-    private function _detect_major_version_change($activation_history)
-    {
-        $previous_version = EE_System::_get_most_recently_active_version_from_activation_history($activation_history);
-        $previous_version_parts = explode('.', $previous_version);
-        $current_version_parts = explode('.', espresso_version());
-        return isset($previous_version_parts[0], $previous_version_parts[1], $current_version_parts[0], $current_version_parts[1])
-               && ($previous_version_parts[0] !== $current_version_parts[0]
-                   || $previous_version_parts[1] !== $current_version_parts[1]
-               );
-    }
-
-
-    /**
-     * Returns true if either the major or minor version of EE changed during this request.
-     * Eg 4.9.0.rc.001 to 4.10.0.rc.000, but not 4.9.0.rc.0001 to 4.9.1.rc.0001
-     *
-     * @return bool
-     */
-    public function is_major_version_change()
-    {
-        return $this->_major_version_change;
-    }
-
-
-    /**
-     * Determines the request type for any ee addon, given three piece of info: the current array of activation
-     * histories (for core that' 'espresso_db_update' wp option); the name of the WordPress option which is temporarily
-     * set upon activation of the plugin (for core it's 'ee_espresso_activation'); and the version that this plugin was
-     * just activated to (for core that will always be espresso_version())
-     *
-     * @param array  $activation_history_for_addon     the option's value which stores the activation history for this
-     *                                                 ee plugin. for core that's 'espresso_db_update'
-     * @param string $activation_indicator_option_name the name of the WordPress option that is temporarily set to
-     *                                                 indicate that this plugin was just activated
-     * @param string $version_to_upgrade_to            the version that was just upgraded to (for core that will be
-     *                                                 espresso_version())
-     * @return int one of the constants on EE_System::req_type_*
-     */
-    public static function detect_req_type_given_activation_history(
-        $activation_history_for_addon,
-        $activation_indicator_option_name,
-        $version_to_upgrade_to
-    ) {
-        $version_is_higher = self::_new_version_is_higher($activation_history_for_addon, $version_to_upgrade_to);
-        if ($activation_history_for_addon) {
-            // it exists, so this isn't a completely new install
-            // check if this version already in that list of previously installed versions
-            if (! isset($activation_history_for_addon[ $version_to_upgrade_to ])) {
-                // it a version we haven't seen before
-                if ($version_is_higher === 1) {
-                    $req_type = EE_System::req_type_upgrade;
-                } else {
-                    $req_type = EE_System::req_type_downgrade;
-                }
-                delete_option($activation_indicator_option_name);
-            } else {
-                // its not an update. maybe a reactivation?
-                if (get_option($activation_indicator_option_name, false)) {
-                    if ($version_is_higher === -1) {
-                        $req_type = EE_System::req_type_downgrade;
-                    } elseif ($version_is_higher === 0) {
-                        // we've seen this version before, but it's an activation. must be a reactivation
-                        $req_type = EE_System::req_type_reactivation;
-                    } else {// $version_is_higher === 1
-                        $req_type = EE_System::req_type_upgrade;
-                    }
-                    delete_option($activation_indicator_option_name);
-                } else {
-                    // we've seen this version before and the activation indicate doesn't show it was just activated
-                    if ($version_is_higher === -1) {
-                        $req_type = EE_System::req_type_downgrade;
-                    } elseif ($version_is_higher === 0) {
-                        // we've seen this version before and it's not an activation. its normal request
-                        $req_type = EE_System::req_type_normal;
-                    } else {// $version_is_higher === 1
-                        $req_type = EE_System::req_type_upgrade;
-                    }
-                }
-            }
-        } else {
-            // brand new install
-            $req_type = EE_System::req_type_new_activation;
-            delete_option($activation_indicator_option_name);
-        }
-        return $req_type;
-    }
-
-
-    /**
-     * Detects if the $version_to_upgrade_to is higher than the most recent version in
-     * the $activation_history_for_addon
-     *
-     * @param array  $activation_history_for_addon (keys are versions, values are arrays of times activated,
-     *                                             sometimes containing 'unknown-date'
-     * @param string $version_to_upgrade_to        (current version)
-     * @return int results of version_compare( $version_to_upgrade_to, $most_recently_active_version ).
-     *                                             ie, -1 if $version_to_upgrade_to is LOWER (downgrade);
-     *                                             0 if $version_to_upgrade_to MATCHES (reactivation or normal request);
-     *                                             1 if $version_to_upgrade_to is HIGHER (upgrade) ;
-     */
-    private static function _new_version_is_higher($activation_history_for_addon, $version_to_upgrade_to)
-    {
-        // find the most recently-activated version
-        $most_recently_active_version =
-            EE_System::_get_most_recently_active_version_from_activation_history($activation_history_for_addon);
-        return version_compare($version_to_upgrade_to, $most_recently_active_version);
-    }
-
-
-    /**
-     * Gets the most recently active version listed in the activation history,
-     * and if none are found (ie, it's a brand new install) returns '0.0.0.dev.000'.
-     *
-     * @param array $activation_history  (keys are versions, values are arrays of times activated,
-     *                                   sometimes containing 'unknown-date'
-     * @return string
-     */
-    private static function _get_most_recently_active_version_from_activation_history($activation_history)
-    {
-        $most_recently_active_version_activation = '1970-01-01 00:00:00';
-        $most_recently_active_version = '0.0.0.dev.000';
-        if (is_array($activation_history)) {
-            foreach ($activation_history as $version => $times_activated) {
-                // check there is a record of when this version was activated. Otherwise,
-                // mark it as unknown
-                if (! $times_activated) {
-                    $times_activated = array('unknown-date');
-                }
-                if (is_string($times_activated)) {
-                    $times_activated = array($times_activated);
-                }
-                foreach ($times_activated as $an_activation) {
-                    if ($an_activation !== 'unknown-date'
-                        && $an_activation
-                           > $most_recently_active_version_activation) {
-                        $most_recently_active_version = $version;
-                        $most_recently_active_version_activation = $an_activation === 'unknown-date'
-                            ? '1970-01-01 00:00:00'
-                            : $an_activation;
-                    }
-                }
-            }
-        }
-        return $most_recently_active_version;
-    }
-
-
-    /**
-     * This redirects to the about EE page after activation
-     *
-     * @return void
-     */
-    public function redirect_to_about_ee()
-    {
-        $notices = EE_Error::get_notices(false);
-        // if current user is an admin and it's not an ajax or rest request
-        if (! isset($notices['errors'])
-            && $this->request->isAdmin()
-            && apply_filters(
-                'FHEE__EE_System__redirect_to_about_ee__do_redirect',
-                $this->capabilities->current_user_can('manage_options', 'espresso_about_default')
-            )
-        ) {
-            $query_params = array('page' => 'espresso_about');
-            if (EE_System::instance()->detect_req_type() === EE_System::req_type_new_activation) {
-                $query_params['new_activation'] = true;
-            }
-            if (EE_System::instance()->detect_req_type() === EE_System::req_type_reactivation) {
-                $query_params['reactivation'] = true;
-            }
-            $url = add_query_arg($query_params, admin_url('admin.php'));
-            wp_safe_redirect($url);
-            exit();
-        }
-    }
-
-
-    /**
-     * load_core_configuration
-     * this is hooked into 'AHEE__EE_Bootstrap__load_core_configuration'
-     * which runs during the WP 'plugins_loaded' action at priority 5
-     *
-     * @return void
-     * @throws ReflectionException
-     * @throws Exception
-     */
-    public function load_core_configuration()
-    {
-        do_action('AHEE__EE_System__load_core_configuration__begin', $this);
-        $this->loader->getShared('EE_Load_Textdomain');
-        // load textdomain
-        EE_Load_Textdomain::load_textdomain();
-        // load caf stuff a chance to play during the activation process too.
-        $this->_maybe_brew_regular();
-        // load and setup EE_Config and EE_Network_Config
-        $config = $this->loader->getShared('EE_Config');
-        $this->loader->getShared('EE_Network_Config');
-        // setup autoloaders
-        // enable logging?
-        if ($config->admin->use_remote_logging) {
-            $this->loader->getShared('EE_Log');
-        }
-        // check for activation errors
-        $activation_errors = get_option('ee_plugin_activation_errors', false);
-        if ($activation_errors) {
-            EE_Error::add_error($activation_errors, __FILE__, __FUNCTION__, __LINE__);
-            update_option('ee_plugin_activation_errors', false);
-        }
-        // get model names
-        $this->_parse_model_names();
-        // configure custom post type definitions
-        $this->loader->getShared('EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions');
-        $this->loader->getShared('EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions');
-        do_action('AHEE__EE_System__load_core_configuration__complete', $this);
-    }
-
-
-    /**
-     * cycles through all of the models/*.model.php files, and assembles an array of model names
-     *
-     * @return void
-     * @throws ReflectionException
-     */
-    private function _parse_model_names()
-    {
-        // get all the files in the EE_MODELS folder that end in .model.php
-        $models = glob(EE_MODELS . '*.model.php');
-        $model_names = array();
-        $non_abstract_db_models = array();
-        foreach ($models as $model) {
-            // get model classname
-            $classname = EEH_File::get_classname_from_filepath_with_standard_filename($model);
-            $short_name = str_replace('EEM_', '', $classname);
-            $reflectionClass = new ReflectionClass($classname);
-            if ($reflectionClass->isSubclassOf('EEM_Base') && ! $reflectionClass->isAbstract()) {
-                $non_abstract_db_models[ $short_name ] = $classname;
-            }
-            $model_names[ $short_name ] = $classname;
-        }
-        $this->registry->models = apply_filters('FHEE__EE_System__parse_model_names', $model_names);
-        $this->registry->non_abstract_db_models = apply_filters(
-            'FHEE__EE_System__parse_implemented_model_names',
-            $non_abstract_db_models
-        );
-    }
-
-
-    /**
-     * The purpose of this method is to simply check for a file named "caffeinated/brewing_regular.php" for any hooks
-     * that need to be setup before our EE_System launches.
-     *
-     * @return void
-     * @throws DomainException
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws InvalidClassException
-     * @throws InvalidFilePathException
-     */
-    private function _maybe_brew_regular()
-    {
-        /** @var Domain $domain */
-        $domain = DomainFactory::getShared(
-            new FullyQualifiedName(
-                'EventEspresso\core\domain\Domain'
-            ),
-            array(
-                new FilePath(EVENT_ESPRESSO_MAIN_FILE),
-                Version::fromString(espresso_version()),
-            )
-        );
-        if ($domain->isCaffeinated()) {
-            require_once EE_CAFF_PATH . 'brewing_regular.php';
-        }
-    }
-
-
-    /**
-     * @since 4.9.71.p
-     * @throws Exception
-     */
-    public function loadRouteMatchSpecifications()
-    {
-        try {
-            $this->loader->getShared(
-                'EventEspresso\core\services\route_match\RouteMatchSpecificationManager'
-            );
-        } catch (Exception $exception) {
-            new ExceptionStackTraceDisplay($exception);
-        }
-        do_action('AHEE__EE_System__loadRouteMatchSpecifications');
-    }
-
-
-    /**
-     * register_shortcodes_modules_and_widgets
-     * generate lists of shortcodes and modules, then verify paths and classes
-     * This is hooked into 'AHEE__EE_Bootstrap__register_shortcodes_modules_and_widgets'
-     * which runs during the WP 'plugins_loaded' action at priority 7
-     *
-     * @access public
-     * @return void
-     * @throws Exception
-     */
-    public function register_shortcodes_modules_and_widgets()
-    {
-        if ($this->request->isFrontend() || $this->request->isIframe() || $this->request->isAjax()) {
-            try {
-                // load, register, and add shortcodes the new way
-                $this->loader->getShared(
-                    'EventEspresso\core\services\shortcodes\ShortcodesManager',
-                    array(
-                        // and the old way, but we'll put it under control of the new system
-                        EE_Config::getLegacyShortcodesManager(),
-                    )
-                );
-            } catch (Exception $exception) {
-                new ExceptionStackTraceDisplay($exception);
-            }
-        }
-        do_action('AHEE__EE_System__register_shortcodes_modules_and_widgets');
-        // check for addons using old hook point
-        if (has_action('AHEE__EE_System__register_shortcodes_modules_and_addons')) {
-            $this->_incompatible_addon_error();
-        }
-    }
-
-
-    /**
-     * _incompatible_addon_error
-     *
-     * @access public
-     * @return void
-     */
-    private function _incompatible_addon_error()
-    {
-        // get array of classes hooking into here
-        $class_names = EEH_Class_Tools::get_class_names_for_all_callbacks_on_hook(
-            'AHEE__EE_System__register_shortcodes_modules_and_addons'
-        );
-        if (! empty($class_names)) {
-            $msg = __(
-                'The following plugins, addons, or modules appear to be incompatible with this version of Event Espresso and were automatically deactivated to avoid fatal errors:',
-                'event_espresso'
-            );
-            $msg .= '<ul>';
-            foreach ($class_names as $class_name) {
-                $msg .= '<li><b>Event Espresso - '
-                        . str_replace(
-                            array('EE_', 'EEM_', 'EED_', 'EES_', 'EEW_'),
-                            '',
-                            $class_name
-                        ) . '</b></li>';
-            }
-            $msg .= '</ul>';
-            $msg .= __(
-                'Compatibility issues can be avoided and/or resolved by keeping addons and plugins updated to the latest version.',
-                'event_espresso'
-            );
-            // save list of incompatible addons to wp-options for later use
-            add_option('ee_incompatible_addons', $class_names, '', 'no');
-            if (is_admin()) {
-                EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
-            }
-        }
-    }
-
-
-    /**
-     * brew_espresso
-     * begins the process of setting hooks for initializing EE in the correct order
-     * This is happening on the 'AHEE__EE_Bootstrap__brew_espresso' hook point
-     * which runs during the WP 'plugins_loaded' action at priority 9
-     *
-     * @return void
-     */
-    public function brew_espresso()
-    {
-        do_action('AHEE__EE_System__brew_espresso__begin', $this);
-        // load some final core systems
-        add_action('init', array($this, 'set_hooks_for_core'), 1);
-        add_action('init', array($this, 'perform_activations_upgrades_and_migrations'), 3);
-        add_action('init', array($this, 'load_CPTs_and_session'), 5);
-        add_action('init', array($this, 'load_controllers'), 7);
-        add_action('init', array($this, 'core_loaded_and_ready'), 9);
-        add_action('init', array($this, 'initialize'), 10);
-        add_action('init', array($this, 'initialize_last'), 100);
-        if (is_admin() && apply_filters('FHEE__EE_System__brew_espresso__load_pue', true)) {
-            // pew pew pew
-            $this->loader->getShared('EventEspresso\core\services\licensing\LicenseService');
-            do_action('AHEE__EE_System__brew_espresso__after_pue_init');
-        }
-        do_action('AHEE__EE_System__brew_espresso__complete', $this);
-    }
-
-
-    /**
-     *    set_hooks_for_core
-     *
-     * @access public
-     * @return    void
-     * @throws EE_Error
-     */
-    public function set_hooks_for_core()
-    {
-        $this->_deactivate_incompatible_addons();
-        do_action('AHEE__EE_System__set_hooks_for_core');
-        $this->loader->getShared('EventEspresso\core\domain\values\session\SessionLifespan');
-        // caps need to be initialized on every request so that capability maps are set.
-        // @see https://events.codebasehq.com/projects/event-espresso/tickets/8674
-        $this->registry->CAP->init_caps();
-    }
-
-
-    /**
-     * Using the information gathered in EE_System::_incompatible_addon_error,
-     * deactivates any addons considered incompatible with the current version of EE
-     */
-    private function _deactivate_incompatible_addons()
-    {
-        $incompatible_addons = get_option('ee_incompatible_addons', array());
-        if (! empty($incompatible_addons)) {
-            $active_plugins = get_option('active_plugins', array());
-            foreach ($active_plugins as $active_plugin) {
-                foreach ($incompatible_addons as $incompatible_addon) {
-                    if (strpos($active_plugin, $incompatible_addon) !== false) {
-                        unset($_GET['activate']);
-                        espresso_deactivate_plugin($active_plugin);
-                    }
-                }
-            }
-        }
-    }
-
-
-    /**
-     *    perform_activations_upgrades_and_migrations
-     *
-     * @access public
-     * @return    void
-     */
-    public function perform_activations_upgrades_and_migrations()
-    {
-        do_action('AHEE__EE_System__perform_activations_upgrades_and_migrations');
-    }
-
-
-    /**
-     * @return void
-     * @throws DomainException
-     */
-    public function load_CPTs_and_session()
-    {
-        do_action('AHEE__EE_System__load_CPTs_and_session__start');
-        /** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies $register_custom_taxonomies */
-        $register_custom_taxonomies = $this->loader->getShared(
-            'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies'
-        );
-        $register_custom_taxonomies->registerCustomTaxonomies();
-        /** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes $register_custom_post_types */
-        $register_custom_post_types = $this->loader->getShared(
-            'EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes'
-        );
-        $register_custom_post_types->registerCustomPostTypes();
-        /** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms */
-        $register_custom_taxonomy_terms = $this->loader->getShared(
-            'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomyTerms'
-        );
-        $register_custom_taxonomy_terms->registerCustomTaxonomyTerms();
-        // load legacy Custom Post Types and Taxonomies
-        $this->loader->getShared('EE_Register_CPTs');
-        do_action('AHEE__EE_System__load_CPTs_and_session__complete');
-    }
-
-
-    /**
-     * load_controllers
-     * this is the best place to load any additional controllers that needs access to EE core.
-     * it is expected that all basic core EE systems, that are not dependant on the current request are loaded at this
-     * time
-     *
-     * @access public
-     * @return void
-     */
-    public function load_controllers()
-    {
-        do_action('AHEE__EE_System__load_controllers__start');
-        // let's get it started
-        if (! $this->maintenance_mode->level()
-            && ($this->request->isFrontend() || $this->request->isFrontAjax())
-        ) {
-            do_action('AHEE__EE_System__load_controllers__load_front_controllers');
-            $this->loader->getShared('EE_Front_Controller');
-        } elseif ($this->request->isAdmin() || $this->request->isAdminAjax()) {
-            do_action('AHEE__EE_System__load_controllers__load_admin_controllers');
-            $this->loader->getShared('EE_Admin');
-        } elseif ($this->request->isWordPressHeartbeat()) {
-            $this->loader->getShared('EventEspresso\core\domain\services\admin\ajax\WordpressHeartbeat');
-        }
-        do_action('AHEE__EE_System__load_controllers__complete');
-    }
-
-
-    /**
-     * core_loaded_and_ready
-     * all of the basic EE core should be loaded at this point and available regardless of M-Mode
-     *
-     * @access public
-     * @return void
-     * @throws Exception
-     */
-    public function core_loaded_and_ready()
-    {
-        if ($this->request->isAdmin()
-            || $this->request->isFrontend()
-            || $this->request->isIframe()
-            || $this->request->isWordPressApi()
-        ) {
-            try {
-                $this->loader->getShared('EventEspresso\core\services\assets\Registry');
-                $this->loader->getShared('EventEspresso\core\domain\services\assets\CoreAssetManager');
-                if ($this->canLoadBlocks()) {
-                    $this->loader->getShared(
-                        'EventEspresso\core\services\editor\BlockRegistrationManager'
-                    );
-                }
-            } catch (Exception $exception) {
-                new ExceptionStackTraceDisplay($exception);
-            }
-        }
-        if ($this->request->isAdmin()
-            || $this->request->isEeAjax()
-            || $this->request->isFrontend()
-        ) {
-            $this->loader->getShared('EE_Session');
-        }
-        // integrate WP_Query with the EE models
-        $this->loader->getShared('EE_CPT_Strategy');
-        do_action('AHEE__EE_System__core_loaded_and_ready');
-        // always load template tags, because it's faster than checking if it's a front-end request, and many page
-        // builders require these even on the front-end
-        require_once EE_PUBLIC . 'template_tags.php';
-        // load handler for GraphQL requests
-        if (class_exists('WPGraphQL') && $this->request->isGQL()) {
-            try {
-                $graphQL_manager = $this->loader->getShared(
-                    'EventEspresso\core\services\graphql\GraphQLManager'
-                );
-                $graphQL_manager->init();
-            } catch (Exception $exception) {
-                new ExceptionStackTraceDisplay($exception);
-            }
-        }
-        do_action('AHEE__EE_System__set_hooks_for_shortcodes_modules_and_addons');
-    }
-
-
-    /**
-     * initialize
-     * this is the best place to begin initializing client code
-     *
-     * @access public
-     * @return void
-     */
-    public function initialize()
-    {
-        do_action('AHEE__EE_System__initialize');
-    }
-
-
-    /**
-     * initialize_last
-     * this is run really late during the WP init hook point, and ensures that mostly everything else that needs to
-     * initialize has done so
-     *
-     * @access public
-     * @return void
-     */
-    public function initialize_last()
-    {
-        do_action('AHEE__EE_System__initialize_last');
-        /** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
-        $rewrite_rules = $this->loader->getShared(
-            'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
-        );
-        $rewrite_rules->flushRewriteRules();
-        add_action('admin_bar_init', array($this, 'addEspressoToolbar'));
-        if (($this->request->isAjax() || $this->request->isAdmin())
-            && $this->maintenance_mode->models_can_query()) {
-            $this->loader->getShared('EventEspresso\core\services\privacy\export\PersonalDataExporterManager');
-            $this->loader->getShared('EventEspresso\core\services\privacy\erasure\PersonalDataEraserManager');
-        }
-    }
-
-
-    /**
-     * @return void
-     * @throws EE_Error
-     */
-    public function addEspressoToolbar()
-    {
-        $this->loader->getShared(
-            'EventEspresso\core\domain\services\admin\AdminToolBar',
-            array($this->registry->CAP)
-        );
-    }
-
-
-    /**
-     * do_not_cache
-     * sets no cache headers and defines no cache constants for WP plugins
-     *
-     * @access public
-     * @return void
-     */
-    public static function do_not_cache()
-    {
-        // set no cache constants
-        if (! defined('DONOTCACHEPAGE')) {
-            define('DONOTCACHEPAGE', true);
-        }
-        if (! defined('DONOTCACHCEOBJECT')) {
-            define('DONOTCACHCEOBJECT', true);
-        }
-        if (! defined('DONOTCACHEDB')) {
-            define('DONOTCACHEDB', true);
-        }
-        // add no cache headers
-        add_action('send_headers', array('EE_System', 'nocache_headers'), 10);
-        // plus a little extra for nginx and Google Chrome
-        add_filter('nocache_headers', array('EE_System', 'extra_nocache_headers'), 10, 1);
-        // prevent browsers from prefetching of the rel='next' link, because it may contain content that interferes with the registration process
-        remove_action('wp_head', 'adjacent_posts_rel_link_wp_head');
-    }
-
-
-    /**
-     *    extra_nocache_headers
-     *
-     * @access    public
-     * @param $headers
-     * @return    array
-     */
-    public static function extra_nocache_headers($headers)
-    {
-        // for NGINX
-        $headers['X-Accel-Expires'] = 0;
-        // plus extra for Google Chrome since it doesn't seem to respect "no-cache", but WILL respect "no-store"
-        $headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, max-age=0';
-        return $headers;
-    }
-
-
-    /**
-     *    nocache_headers
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function nocache_headers()
-    {
-        nocache_headers();
-    }
-
-
-    /**
-     * simply hooks into "wp_list_pages_exclude" filter (for wp_list_pages method) and makes sure EE critical pages are
-     * never returned with the function.
-     *
-     * @param  array $exclude_array any existing pages being excluded are in this array.
-     * @return array
-     */
-    public function remove_pages_from_wp_list_pages($exclude_array)
-    {
-        return array_merge($exclude_array, $this->registry->CFG->core->get_critical_pages_array());
-    }
-
-
-    /**
-     * Return whether blocks can be registered/loaded or not.
-     * @return bool
-     */
-    private function canLoadBlocks()
-    {
-        return apply_filters('FHEE__EE_System__canLoadBlocks', true)
-               && function_exists('register_block_type')
-               // don't load blocks if in the Divi page builder editor context
-               // @see https://github.com/eventespresso/event-espresso-core/issues/814
-               && ! $this->request->getRequestParam('et_fb', false);
-    }
+	/**
+	 * indicates this is a 'normal' request. Ie, not activation, nor upgrade, nor activation.
+	 * So examples of this would be a normal GET request on the frontend or backend, or a POST, etc
+	 */
+	const req_type_normal = 0;
+
+	/**
+	 * Indicates this is a brand new installation of EE so we should install
+	 * tables and default data etc
+	 */
+	const req_type_new_activation = 1;
+
+	/**
+	 * we've detected that EE has been reactivated (or EE was activated during maintenance mode,
+	 * and we just exited maintenance mode). We MUST check the database is setup properly
+	 * and that default data is setup too
+	 */
+	const req_type_reactivation = 2;
+
+	/**
+	 * indicates that EE has been upgraded since its previous request.
+	 * We may have data migration scripts to call and will want to trigger maintenance mode
+	 */
+	const req_type_upgrade = 3;
+
+	/**
+	 * TODO  will detect that EE has been DOWNGRADED. We probably don't want to run in this case...
+	 */
+	const req_type_downgrade = 4;
+
+	/**
+	 * @deprecated since version 4.6.0.dev.006
+	 * Now whenever a new_activation is detected the request type is still just
+	 * new_activation (same for reactivation, upgrade, downgrade etc), but if we'r ein maintenance mode
+	 * EE_System::initialize_db_if_no_migrations_required and EE_Addon::initialize_db_if_no_migrations_required
+	 * will instead enqueue that EE plugin's db initialization for when we're taken out of maintenance mode.
+	 * (Specifically, when the migration manager indicates migrations are finished
+	 * EE_Data_Migration_Manager::initialize_db_for_enqueued_ee_plugins() will be called)
+	 */
+	const req_type_activation_but_not_installed = 5;
+
+	/**
+	 * option prefix for recording the activation history (like core's "espresso_db_update") of addons
+	 */
+	const addon_activation_history_option_prefix = 'ee_addon_activation_history_';
+
+	/**
+	 * @var EE_System $_instance
+	 */
+	private static $_instance;
+
+	/**
+	 * @var EE_Registry $registry
+	 */
+	private $registry;
+
+	/**
+	 * @var LoaderInterface $loader
+	 */
+	private $loader;
+
+	/**
+	 * @var EE_Capabilities $capabilities
+	 */
+	private $capabilities;
+
+	/**
+	 * @var RequestInterface $request
+	 */
+	private $request;
+
+	/**
+	 * @var EE_Maintenance_Mode $maintenance_mode
+	 */
+	private $maintenance_mode;
+
+	/**
+	 * Stores which type of request this is, options being one of the constants on EE_System starting with req_type_*.
+	 * It can be a brand-new activation, a reactivation, an upgrade, a downgrade, or a normal request.
+	 *
+	 * @var int $_req_type
+	 */
+	private $_req_type;
+
+	/**
+	 * Whether or not there was a non-micro version change in EE core version during this request
+	 *
+	 * @var boolean $_major_version_change
+	 */
+	private $_major_version_change = false;
+
+	/**
+	 * A Context DTO dedicated solely to identifying the current request type.
+	 *
+	 * @var RequestTypeContextCheckerInterface $request_type
+	 */
+	private $request_type;
+
+
+	/**
+	 * @singleton method used to instantiate class object
+	 * @param EE_Registry|null         $registry
+	 * @param LoaderInterface|null     $loader
+	 * @param RequestInterface|null    $request
+	 * @param EE_Maintenance_Mode|null $maintenance_mode
+	 * @return EE_System
+	 */
+	public static function instance(
+		EE_Registry $registry = null,
+		LoaderInterface $loader = null,
+		RequestInterface $request = null,
+		EE_Maintenance_Mode $maintenance_mode = null
+	) {
+		// check if class object is instantiated
+		if (! self::$_instance instanceof EE_System) {
+			self::$_instance = new self($registry, $loader, $request, $maintenance_mode);
+		}
+		return self::$_instance;
+	}
+
+
+	/**
+	 * resets the instance and returns it
+	 *
+	 * @return EE_System
+	 */
+	public static function reset()
+	{
+		self::$_instance->_req_type = null;
+		// make sure none of the old hooks are left hanging around
+		remove_all_actions('AHEE__EE_System__perform_activations_upgrades_and_migrations');
+		// we need to reset the migration manager in order for it to detect DMSs properly
+		EE_Data_Migration_Manager::reset();
+		self::instance()->detect_activations_or_upgrades();
+		self::instance()->perform_activations_upgrades_and_migrations();
+		return self::instance();
+	}
+
+
+	/**
+	 * sets hooks for running rest of system
+	 * provides "AHEE__EE_System__construct__complete" hook for EE Addons to use as their starting point
+	 * starting EE Addons from any other point may lead to problems
+	 *
+	 * @param EE_Registry         $registry
+	 * @param LoaderInterface     $loader
+	 * @param RequestInterface    $request
+	 * @param EE_Maintenance_Mode $maintenance_mode
+	 */
+	private function __construct(
+		EE_Registry $registry,
+		LoaderInterface $loader,
+		RequestInterface $request,
+		EE_Maintenance_Mode $maintenance_mode
+	) {
+		$this->registry = $registry;
+		$this->loader = $loader;
+		$this->request = $request;
+		$this->maintenance_mode = $maintenance_mode;
+		do_action('AHEE__EE_System__construct__begin', $this);
+		add_action(
+			'AHEE__EE_Bootstrap__load_espresso_addons',
+			array($this, 'loadCapabilities'),
+			5
+		);
+		add_action(
+			'AHEE__EE_Bootstrap__load_espresso_addons',
+			array($this, 'loadCommandBus'),
+			7
+		);
+		add_action(
+			'AHEE__EE_Bootstrap__load_espresso_addons',
+			array($this, 'loadPluginApi'),
+			9
+		);
+		// allow addons to load first so that they can register autoloaders, set hooks for running DMS's, etc
+		add_action(
+			'AHEE__EE_Bootstrap__load_espresso_addons',
+			array($this, 'load_espresso_addons')
+		);
+		// when an ee addon is activated, we want to call the core hook(s) again
+		// because the newly-activated addon didn't get a chance to run at all
+		add_action('activate_plugin', array($this, 'load_espresso_addons'), 1);
+		// detect whether install or upgrade
+		add_action(
+			'AHEE__EE_Bootstrap__detect_activations_or_upgrades',
+			array($this, 'detect_activations_or_upgrades'),
+			3
+		);
+		// load EE_Config, EE_Textdomain, etc
+		add_action(
+			'AHEE__EE_Bootstrap__load_core_configuration',
+			array($this, 'load_core_configuration'),
+			5
+		);
+		// load specifications for matching routes to current request
+		add_action(
+			'AHEE__EE_Bootstrap__load_core_configuration',
+			array($this, 'loadRouteMatchSpecifications')
+		);
+		// load EE_Config, EE_Textdomain, etc
+		add_action(
+			'AHEE__EE_Bootstrap__register_shortcodes_modules_and_widgets',
+			array($this, 'register_shortcodes_modules_and_widgets'),
+			7
+		);
+		// you wanna get going? I wanna get going... let's get going!
+		add_action(
+			'AHEE__EE_Bootstrap__brew_espresso',
+			array($this, 'brew_espresso'),
+			9
+		);
+		// other housekeeping
+		// exclude EE critical pages from wp_list_pages
+		add_filter(
+			'wp_list_pages_excludes',
+			array($this, 'remove_pages_from_wp_list_pages'),
+			10
+		);
+		// ALL EE Addons should use the following hook point to attach their initial setup too
+		// it's extremely important for EE Addons to register any class autoloaders so that they can be available when the EE_Config loads
+		do_action('AHEE__EE_System__construct__complete', $this);
+	}
+
+
+	/**
+	 * load and setup EE_Capabilities
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function loadCapabilities()
+	{
+		$this->capabilities = $this->loader->getShared('EE_Capabilities');
+		add_action(
+			'AHEE__EE_Capabilities__init_caps__before_initialization',
+			function () {
+				LoaderFactory::getLoader()->getShared('EE_Payment_Method_Manager');
+			}
+		);
+	}
+
+
+	/**
+	 * create and cache the CommandBus, and also add middleware
+	 * The CapChecker middleware requires the use of EE_Capabilities
+	 * which is why we need to load the CommandBus after Caps are set up
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function loadCommandBus()
+	{
+		$this->loader->getShared(
+			'CommandBusInterface',
+			array(
+				null,
+				apply_filters(
+					'FHEE__EE_Load_Espresso_Core__handle_request__CommandBus_middleware',
+					array(
+						$this->loader->getShared('EventEspresso\core\services\commands\middleware\CapChecker'),
+						$this->loader->getShared('EventEspresso\core\services\commands\middleware\AddActionHook'),
+					)
+				),
+			)
+		);
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function loadPluginApi()
+	{
+		// set autoloaders for all of the classes implementing EEI_Plugin_API
+		// which provide helpers for EE plugin authors to more easily register certain components with EE.
+		EEH_Autoloader::instance()->register_autoloaders_for_each_file_in_folder(EE_LIBRARIES . 'plugin_api');
+		$this->loader->getShared('EE_Request_Handler');
+	}
+
+
+	/**
+	 * @param string $addon_name
+	 * @param string $version_constant
+	 * @param string $min_version_required
+	 * @param string $load_callback
+	 * @param string $plugin_file_constant
+	 * @return void
+	 */
+	private function deactivateIncompatibleAddon(
+		$addon_name,
+		$version_constant,
+		$min_version_required,
+		$load_callback,
+		$plugin_file_constant
+	) {
+		if (! defined($version_constant)) {
+			return;
+		}
+		$addon_version = constant($version_constant);
+		if ($addon_version && version_compare($addon_version, $min_version_required, '<')) {
+			remove_action('AHEE__EE_System__load_espresso_addons', $load_callback);
+			if (! function_exists('deactivate_plugins')) {
+				require_once ABSPATH . 'wp-admin/includes/plugin.php';
+			}
+			deactivate_plugins(plugin_basename(constant($plugin_file_constant)));
+			unset($_GET['activate'], $_REQUEST['activate'], $_GET['activate-multi'], $_REQUEST['activate-multi']);
+			EE_Error::add_error(
+				sprintf(
+					esc_html__(
+						'We\'re sorry, but the Event Espresso %1$s addon was deactivated because version %2$s or higher is required with this version of Event Espresso core.',
+						'event_espresso'
+					),
+					$addon_name,
+					$min_version_required
+				),
+				__FILE__,
+				__FUNCTION__ . "({$addon_name})",
+				__LINE__
+			);
+			EE_Error::get_notices(false, true);
+		}
+	}
+
+
+	/**
+	 * load_espresso_addons
+	 * allow addons to load first so that they can set hooks for running DMS's, etc
+	 * this is hooked into both:
+	 *    'AHEE__EE_Bootstrap__load_core_configuration'
+	 *        which runs during the WP 'plugins_loaded' action at priority 5
+	 *    and the WP 'activate_plugin' hook point
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_espresso_addons()
+	{
+		$this->deactivateIncompatibleAddon(
+			'Wait Lists',
+			'EE_WAIT_LISTS_VERSION',
+			'1.0.0.beta.074',
+			'load_espresso_wait_lists',
+			'EE_WAIT_LISTS_PLUGIN_FILE'
+		);
+		$this->deactivateIncompatibleAddon(
+			'Automated Upcoming Event Notifications',
+			'EE_AUTOMATED_UPCOMING_EVENT_NOTIFICATION_VERSION',
+			'1.0.0.beta.091',
+			'load_espresso_automated_upcoming_event_notification',
+			'EE_AUTOMATED_UPCOMING_EVENT_NOTIFICATION_PLUGIN_FILE'
+		);
+		do_action('AHEE__EE_System__load_espresso_addons');
+		// if the WP API basic auth plugin isn't already loaded, load it now.
+		// We want it for mobile apps. Just include the entire plugin
+		// also, don't load the basic auth when a plugin is getting activated, because
+		// it could be the basic auth plugin, and it doesn't check if its methods are already defined
+		// and causes a fatal error
+		if (($this->request->isWordPressApi() || $this->request->isApi())
+			&& $this->request->getRequestParam('activate') !== 'true'
+			&& ! function_exists('json_basic_auth_handler')
+			&& ! function_exists('json_basic_auth_error')
+			&& ! in_array(
+				$this->request->getRequestParam('action'),
+				array('activate', 'activate-selected'),
+				true
+			)
+		) {
+			include_once EE_THIRD_PARTY . 'wp-api-basic-auth/basic-auth.php';
+		}
+		do_action('AHEE__EE_System__load_espresso_addons__complete');
+	}
+
+
+	/**
+	 * detect_activations_or_upgrades
+	 * Checks for activation or upgrade of core first;
+	 * then also checks if any registered addons have been activated or upgraded
+	 * This is hooked into 'AHEE__EE_Bootstrap__detect_activations_or_upgrades'
+	 * which runs during the WP 'plugins_loaded' action at priority 3
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function detect_activations_or_upgrades()
+	{
+		// first off: let's make sure to handle core
+		$this->detect_if_activation_or_upgrade();
+		foreach ($this->registry->addons as $addon) {
+			if ($addon instanceof EE_Addon) {
+				// detect teh request type for that addon
+				$addon->detect_activation_or_upgrade();
+			}
+		}
+	}
+
+
+	/**
+	 * detect_if_activation_or_upgrade
+	 * Takes care of detecting whether this is a brand new install or code upgrade,
+	 * and either setting up the DB or setting up maintenance mode etc.
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function detect_if_activation_or_upgrade()
+	{
+		do_action('AHEE__EE_System___detect_if_activation_or_upgrade__begin');
+		// check if db has been updated, or if its a brand-new installation
+		$espresso_db_update = $this->fix_espresso_db_upgrade_option();
+		$request_type = $this->detect_req_type($espresso_db_update);
+		// EEH_Debug_Tools::printr( $request_type, '$request_type', __FILE__, __LINE__ );
+		switch ($request_type) {
+			case EE_System::req_type_new_activation:
+				do_action('AHEE__EE_System__detect_if_activation_or_upgrade__new_activation');
+				$this->_handle_core_version_change($espresso_db_update);
+				break;
+			case EE_System::req_type_reactivation:
+				do_action('AHEE__EE_System__detect_if_activation_or_upgrade__reactivation');
+				$this->_handle_core_version_change($espresso_db_update);
+				break;
+			case EE_System::req_type_upgrade:
+				do_action('AHEE__EE_System__detect_if_activation_or_upgrade__upgrade');
+				// migrations may be required now that we've upgraded
+				$this->maintenance_mode->set_maintenance_mode_if_db_old();
+				$this->_handle_core_version_change($espresso_db_update);
+				break;
+			case EE_System::req_type_downgrade:
+				do_action('AHEE__EE_System__detect_if_activation_or_upgrade__downgrade');
+				// its possible migrations are no longer required
+				$this->maintenance_mode->set_maintenance_mode_if_db_old();
+				$this->_handle_core_version_change($espresso_db_update);
+				break;
+			case EE_System::req_type_normal:
+			default:
+				break;
+		}
+		do_action('AHEE__EE_System__detect_if_activation_or_upgrade__complete');
+	}
+
+
+	/**
+	 * Updates the list of installed versions and sets hooks for
+	 * initializing the database later during the request
+	 *
+	 * @param array $espresso_db_update
+	 */
+	private function _handle_core_version_change($espresso_db_update)
+	{
+		$this->update_list_of_installed_versions($espresso_db_update);
+		// get ready to verify the DB is ok (provided we aren't in maintenance mode, of course)
+		add_action(
+			'AHEE__EE_System__perform_activations_upgrades_and_migrations',
+			array($this, 'initialize_db_if_no_migrations_required')
+		);
+	}
+
+
+	/**
+	 * standardizes the wp option 'espresso_db_upgrade' which actually stores
+	 * information about what versions of EE have been installed and activated,
+	 * NOT necessarily the state of the database
+	 *
+	 * @param mixed $espresso_db_update           the value of the WordPress option.
+	 *                                            If not supplied, fetches it from the options table
+	 * @return array the correct value of 'espresso_db_upgrade', after saving it, if it needed correction
+	 */
+	private function fix_espresso_db_upgrade_option($espresso_db_update = null)
+	{
+		do_action('FHEE__EE_System__manage_fix_espresso_db_upgrade_option__begin', $espresso_db_update);
+		if (! $espresso_db_update) {
+			$espresso_db_update = get_option('espresso_db_update');
+		}
+		// check that option is an array
+		if (! is_array($espresso_db_update)) {
+			// if option is FALSE, then it never existed
+			if ($espresso_db_update === false) {
+				// make $espresso_db_update an array and save option with autoload OFF
+				$espresso_db_update = array();
+				add_option('espresso_db_update', $espresso_db_update, '', 'no');
+			} else {
+				// option is NOT FALSE but also is NOT an array, so make it an array and save it
+				$espresso_db_update = array($espresso_db_update => array());
+				update_option('espresso_db_update', $espresso_db_update);
+			}
+		} else {
+			$corrected_db_update = array();
+			// if IS an array, but is it an array where KEYS are version numbers, and values are arrays?
+			foreach ($espresso_db_update as $should_be_version_string => $should_be_array) {
+				if (is_int($should_be_version_string) && ! is_array($should_be_array)) {
+					// the key is an int, and the value IS NOT an array
+					// so it must be numerically-indexed, where values are versions installed...
+					// fix it!
+					$version_string = $should_be_array;
+					$corrected_db_update[ $version_string ] = array('unknown-date');
+				} else {
+					// ok it checks out
+					$corrected_db_update[ $should_be_version_string ] = $should_be_array;
+				}
+			}
+			$espresso_db_update = $corrected_db_update;
+			update_option('espresso_db_update', $espresso_db_update);
+		}
+		do_action('FHEE__EE_System__manage_fix_espresso_db_upgrade_option__complete', $espresso_db_update);
+		return $espresso_db_update;
+	}
+
+
+	/**
+	 * Does the traditional work of setting up the plugin's database and adding default data.
+	 * If migration script/process did not exist, this is what would happen on every activation/reactivation/upgrade.
+	 * NOTE: if we're in maintenance mode (which would be the case if we detect there are data
+	 * migration scripts that need to be run and a version change happens), enqueues core for database initialization,
+	 * so that it will be done when migrations are finished
+	 *
+	 * @param boolean $initialize_addons_too if true, we double-check addons' database tables etc too;
+	 * @param boolean $verify_schema         if true will re-check the database tables have the correct schema.
+	 *                                       This is a resource-intensive job
+	 *                                       so we prefer to only do it when necessary
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function initialize_db_if_no_migrations_required($initialize_addons_too = false, $verify_schema = true)
+	{
+		$request_type = $this->detect_req_type();
+		// only initialize system if we're not in maintenance mode.
+		if ($this->maintenance_mode->level() !== EE_Maintenance_Mode::level_2_complete_maintenance) {
+			/** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
+			$rewrite_rules = $this->loader->getShared(
+				'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
+			);
+			$rewrite_rules->flush();
+			if ($verify_schema) {
+				EEH_Activation::initialize_db_and_folders();
+			}
+			EEH_Activation::initialize_db_content();
+			EEH_Activation::system_initialization();
+			if ($initialize_addons_too) {
+				$this->initialize_addons();
+			}
+		} else {
+			EE_Data_Migration_Manager::instance()->enqueue_db_initialization_for('Core');
+		}
+		if ($request_type === EE_System::req_type_new_activation
+			|| $request_type === EE_System::req_type_reactivation
+			|| (
+				$request_type === EE_System::req_type_upgrade
+				&& $this->is_major_version_change()
+			)
+		) {
+			add_action('AHEE__EE_System__initialize_last', array($this, 'redirect_to_about_ee'), 9);
+		}
+	}
+
+
+	/**
+	 * Initializes the db for all registered addons
+	 *
+	 * @throws EE_Error
+	 */
+	public function initialize_addons()
+	{
+		// foreach registered addon, make sure its db is up-to-date too
+		foreach ($this->registry->addons as $addon) {
+			if ($addon instanceof EE_Addon) {
+				$addon->initialize_db_if_no_migrations_required();
+			}
+		}
+	}
+
+
+	/**
+	 * Adds the current code version to the saved wp option which stores a list of all ee versions ever installed.
+	 *
+	 * @param    array  $version_history
+	 * @param    string $current_version_to_add version to be added to the version history
+	 * @return    boolean success as to whether or not this option was changed
+	 */
+	public function update_list_of_installed_versions($version_history = null, $current_version_to_add = null)
+	{
+		if (! $version_history) {
+			$version_history = $this->fix_espresso_db_upgrade_option($version_history);
+		}
+		if ($current_version_to_add === null) {
+			$current_version_to_add = espresso_version();
+		}
+		$version_history[ $current_version_to_add ][] = date('Y-m-d H:i:s', time());
+		// re-save
+		return update_option('espresso_db_update', $version_history);
+	}
+
+
+	/**
+	 * Detects if the current version indicated in the has existed in the list of
+	 * previously-installed versions of EE (espresso_db_update). Does NOT modify it (ie, no side-effect)
+	 *
+	 * @param array $espresso_db_update array from the wp option stored under the name 'espresso_db_update'.
+	 *                                  If not supplied, fetches it from the options table.
+	 *                                  Also, caches its result so later parts of the code can also know whether
+	 *                                  there's been an update or not. This way we can add the current version to
+	 *                                  espresso_db_update, but still know if this is a new install or not
+	 * @return int one of the constants on EE_System::req_type_
+	 */
+	public function detect_req_type($espresso_db_update = null)
+	{
+		if ($this->_req_type === null) {
+			$espresso_db_update = ! empty($espresso_db_update)
+				? $espresso_db_update
+				: $this->fix_espresso_db_upgrade_option();
+			$this->_req_type = EE_System::detect_req_type_given_activation_history(
+				$espresso_db_update,
+				'ee_espresso_activation',
+				espresso_version()
+			);
+			$this->_major_version_change = $this->_detect_major_version_change($espresso_db_update);
+			$this->request->setIsActivation($this->_req_type !== EE_System::req_type_normal);
+		}
+		return $this->_req_type;
+	}
+
+
+	/**
+	 * Returns whether or not there was a non-micro version change (ie, change in either
+	 * the first or second number in the version. Eg 4.9.0.rc.001 to 4.10.0.rc.000,
+	 * but not 4.9.0.rc.0001 to 4.9.1.rc.0001
+	 *
+	 * @param $activation_history
+	 * @return bool
+	 */
+	private function _detect_major_version_change($activation_history)
+	{
+		$previous_version = EE_System::_get_most_recently_active_version_from_activation_history($activation_history);
+		$previous_version_parts = explode('.', $previous_version);
+		$current_version_parts = explode('.', espresso_version());
+		return isset($previous_version_parts[0], $previous_version_parts[1], $current_version_parts[0], $current_version_parts[1])
+			   && ($previous_version_parts[0] !== $current_version_parts[0]
+				   || $previous_version_parts[1] !== $current_version_parts[1]
+			   );
+	}
+
+
+	/**
+	 * Returns true if either the major or minor version of EE changed during this request.
+	 * Eg 4.9.0.rc.001 to 4.10.0.rc.000, but not 4.9.0.rc.0001 to 4.9.1.rc.0001
+	 *
+	 * @return bool
+	 */
+	public function is_major_version_change()
+	{
+		return $this->_major_version_change;
+	}
+
+
+	/**
+	 * Determines the request type for any ee addon, given three piece of info: the current array of activation
+	 * histories (for core that' 'espresso_db_update' wp option); the name of the WordPress option which is temporarily
+	 * set upon activation of the plugin (for core it's 'ee_espresso_activation'); and the version that this plugin was
+	 * just activated to (for core that will always be espresso_version())
+	 *
+	 * @param array  $activation_history_for_addon     the option's value which stores the activation history for this
+	 *                                                 ee plugin. for core that's 'espresso_db_update'
+	 * @param string $activation_indicator_option_name the name of the WordPress option that is temporarily set to
+	 *                                                 indicate that this plugin was just activated
+	 * @param string $version_to_upgrade_to            the version that was just upgraded to (for core that will be
+	 *                                                 espresso_version())
+	 * @return int one of the constants on EE_System::req_type_*
+	 */
+	public static function detect_req_type_given_activation_history(
+		$activation_history_for_addon,
+		$activation_indicator_option_name,
+		$version_to_upgrade_to
+	) {
+		$version_is_higher = self::_new_version_is_higher($activation_history_for_addon, $version_to_upgrade_to);
+		if ($activation_history_for_addon) {
+			// it exists, so this isn't a completely new install
+			// check if this version already in that list of previously installed versions
+			if (! isset($activation_history_for_addon[ $version_to_upgrade_to ])) {
+				// it a version we haven't seen before
+				if ($version_is_higher === 1) {
+					$req_type = EE_System::req_type_upgrade;
+				} else {
+					$req_type = EE_System::req_type_downgrade;
+				}
+				delete_option($activation_indicator_option_name);
+			} else {
+				// its not an update. maybe a reactivation?
+				if (get_option($activation_indicator_option_name, false)) {
+					if ($version_is_higher === -1) {
+						$req_type = EE_System::req_type_downgrade;
+					} elseif ($version_is_higher === 0) {
+						// we've seen this version before, but it's an activation. must be a reactivation
+						$req_type = EE_System::req_type_reactivation;
+					} else {// $version_is_higher === 1
+						$req_type = EE_System::req_type_upgrade;
+					}
+					delete_option($activation_indicator_option_name);
+				} else {
+					// we've seen this version before and the activation indicate doesn't show it was just activated
+					if ($version_is_higher === -1) {
+						$req_type = EE_System::req_type_downgrade;
+					} elseif ($version_is_higher === 0) {
+						// we've seen this version before and it's not an activation. its normal request
+						$req_type = EE_System::req_type_normal;
+					} else {// $version_is_higher === 1
+						$req_type = EE_System::req_type_upgrade;
+					}
+				}
+			}
+		} else {
+			// brand new install
+			$req_type = EE_System::req_type_new_activation;
+			delete_option($activation_indicator_option_name);
+		}
+		return $req_type;
+	}
+
+
+	/**
+	 * Detects if the $version_to_upgrade_to is higher than the most recent version in
+	 * the $activation_history_for_addon
+	 *
+	 * @param array  $activation_history_for_addon (keys are versions, values are arrays of times activated,
+	 *                                             sometimes containing 'unknown-date'
+	 * @param string $version_to_upgrade_to        (current version)
+	 * @return int results of version_compare( $version_to_upgrade_to, $most_recently_active_version ).
+	 *                                             ie, -1 if $version_to_upgrade_to is LOWER (downgrade);
+	 *                                             0 if $version_to_upgrade_to MATCHES (reactivation or normal request);
+	 *                                             1 if $version_to_upgrade_to is HIGHER (upgrade) ;
+	 */
+	private static function _new_version_is_higher($activation_history_for_addon, $version_to_upgrade_to)
+	{
+		// find the most recently-activated version
+		$most_recently_active_version =
+			EE_System::_get_most_recently_active_version_from_activation_history($activation_history_for_addon);
+		return version_compare($version_to_upgrade_to, $most_recently_active_version);
+	}
+
+
+	/**
+	 * Gets the most recently active version listed in the activation history,
+	 * and if none are found (ie, it's a brand new install) returns '0.0.0.dev.000'.
+	 *
+	 * @param array $activation_history  (keys are versions, values are arrays of times activated,
+	 *                                   sometimes containing 'unknown-date'
+	 * @return string
+	 */
+	private static function _get_most_recently_active_version_from_activation_history($activation_history)
+	{
+		$most_recently_active_version_activation = '1970-01-01 00:00:00';
+		$most_recently_active_version = '0.0.0.dev.000';
+		if (is_array($activation_history)) {
+			foreach ($activation_history as $version => $times_activated) {
+				// check there is a record of when this version was activated. Otherwise,
+				// mark it as unknown
+				if (! $times_activated) {
+					$times_activated = array('unknown-date');
+				}
+				if (is_string($times_activated)) {
+					$times_activated = array($times_activated);
+				}
+				foreach ($times_activated as $an_activation) {
+					if ($an_activation !== 'unknown-date'
+						&& $an_activation
+						   > $most_recently_active_version_activation) {
+						$most_recently_active_version = $version;
+						$most_recently_active_version_activation = $an_activation === 'unknown-date'
+							? '1970-01-01 00:00:00'
+							: $an_activation;
+					}
+				}
+			}
+		}
+		return $most_recently_active_version;
+	}
+
+
+	/**
+	 * This redirects to the about EE page after activation
+	 *
+	 * @return void
+	 */
+	public function redirect_to_about_ee()
+	{
+		$notices = EE_Error::get_notices(false);
+		// if current user is an admin and it's not an ajax or rest request
+		if (! isset($notices['errors'])
+			&& $this->request->isAdmin()
+			&& apply_filters(
+				'FHEE__EE_System__redirect_to_about_ee__do_redirect',
+				$this->capabilities->current_user_can('manage_options', 'espresso_about_default')
+			)
+		) {
+			$query_params = array('page' => 'espresso_about');
+			if (EE_System::instance()->detect_req_type() === EE_System::req_type_new_activation) {
+				$query_params['new_activation'] = true;
+			}
+			if (EE_System::instance()->detect_req_type() === EE_System::req_type_reactivation) {
+				$query_params['reactivation'] = true;
+			}
+			$url = add_query_arg($query_params, admin_url('admin.php'));
+			wp_safe_redirect($url);
+			exit();
+		}
+	}
+
+
+	/**
+	 * load_core_configuration
+	 * this is hooked into 'AHEE__EE_Bootstrap__load_core_configuration'
+	 * which runs during the WP 'plugins_loaded' action at priority 5
+	 *
+	 * @return void
+	 * @throws ReflectionException
+	 * @throws Exception
+	 */
+	public function load_core_configuration()
+	{
+		do_action('AHEE__EE_System__load_core_configuration__begin', $this);
+		$this->loader->getShared('EE_Load_Textdomain');
+		// load textdomain
+		EE_Load_Textdomain::load_textdomain();
+		// load caf stuff a chance to play during the activation process too.
+		$this->_maybe_brew_regular();
+		// load and setup EE_Config and EE_Network_Config
+		$config = $this->loader->getShared('EE_Config');
+		$this->loader->getShared('EE_Network_Config');
+		// setup autoloaders
+		// enable logging?
+		if ($config->admin->use_remote_logging) {
+			$this->loader->getShared('EE_Log');
+		}
+		// check for activation errors
+		$activation_errors = get_option('ee_plugin_activation_errors', false);
+		if ($activation_errors) {
+			EE_Error::add_error($activation_errors, __FILE__, __FUNCTION__, __LINE__);
+			update_option('ee_plugin_activation_errors', false);
+		}
+		// get model names
+		$this->_parse_model_names();
+		// configure custom post type definitions
+		$this->loader->getShared('EventEspresso\core\domain\entities\custom_post_types\CustomTaxonomyDefinitions');
+		$this->loader->getShared('EventEspresso\core\domain\entities\custom_post_types\CustomPostTypeDefinitions');
+		do_action('AHEE__EE_System__load_core_configuration__complete', $this);
+	}
+
+
+	/**
+	 * cycles through all of the models/*.model.php files, and assembles an array of model names
+	 *
+	 * @return void
+	 * @throws ReflectionException
+	 */
+	private function _parse_model_names()
+	{
+		// get all the files in the EE_MODELS folder that end in .model.php
+		$models = glob(EE_MODELS . '*.model.php');
+		$model_names = array();
+		$non_abstract_db_models = array();
+		foreach ($models as $model) {
+			// get model classname
+			$classname = EEH_File::get_classname_from_filepath_with_standard_filename($model);
+			$short_name = str_replace('EEM_', '', $classname);
+			$reflectionClass = new ReflectionClass($classname);
+			if ($reflectionClass->isSubclassOf('EEM_Base') && ! $reflectionClass->isAbstract()) {
+				$non_abstract_db_models[ $short_name ] = $classname;
+			}
+			$model_names[ $short_name ] = $classname;
+		}
+		$this->registry->models = apply_filters('FHEE__EE_System__parse_model_names', $model_names);
+		$this->registry->non_abstract_db_models = apply_filters(
+			'FHEE__EE_System__parse_implemented_model_names',
+			$non_abstract_db_models
+		);
+	}
+
+
+	/**
+	 * The purpose of this method is to simply check for a file named "caffeinated/brewing_regular.php" for any hooks
+	 * that need to be setup before our EE_System launches.
+	 *
+	 * @return void
+	 * @throws DomainException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws InvalidClassException
+	 * @throws InvalidFilePathException
+	 */
+	private function _maybe_brew_regular()
+	{
+		/** @var Domain $domain */
+		$domain = DomainFactory::getShared(
+			new FullyQualifiedName(
+				'EventEspresso\core\domain\Domain'
+			),
+			array(
+				new FilePath(EVENT_ESPRESSO_MAIN_FILE),
+				Version::fromString(espresso_version()),
+			)
+		);
+		if ($domain->isCaffeinated()) {
+			require_once EE_CAFF_PATH . 'brewing_regular.php';
+		}
+	}
+
+
+	/**
+	 * @since 4.9.71.p
+	 * @throws Exception
+	 */
+	public function loadRouteMatchSpecifications()
+	{
+		try {
+			$this->loader->getShared(
+				'EventEspresso\core\services\route_match\RouteMatchSpecificationManager'
+			);
+		} catch (Exception $exception) {
+			new ExceptionStackTraceDisplay($exception);
+		}
+		do_action('AHEE__EE_System__loadRouteMatchSpecifications');
+	}
+
+
+	/**
+	 * register_shortcodes_modules_and_widgets
+	 * generate lists of shortcodes and modules, then verify paths and classes
+	 * This is hooked into 'AHEE__EE_Bootstrap__register_shortcodes_modules_and_widgets'
+	 * which runs during the WP 'plugins_loaded' action at priority 7
+	 *
+	 * @access public
+	 * @return void
+	 * @throws Exception
+	 */
+	public function register_shortcodes_modules_and_widgets()
+	{
+		if ($this->request->isFrontend() || $this->request->isIframe() || $this->request->isAjax()) {
+			try {
+				// load, register, and add shortcodes the new way
+				$this->loader->getShared(
+					'EventEspresso\core\services\shortcodes\ShortcodesManager',
+					array(
+						// and the old way, but we'll put it under control of the new system
+						EE_Config::getLegacyShortcodesManager(),
+					)
+				);
+			} catch (Exception $exception) {
+				new ExceptionStackTraceDisplay($exception);
+			}
+		}
+		do_action('AHEE__EE_System__register_shortcodes_modules_and_widgets');
+		// check for addons using old hook point
+		if (has_action('AHEE__EE_System__register_shortcodes_modules_and_addons')) {
+			$this->_incompatible_addon_error();
+		}
+	}
+
+
+	/**
+	 * _incompatible_addon_error
+	 *
+	 * @access public
+	 * @return void
+	 */
+	private function _incompatible_addon_error()
+	{
+		// get array of classes hooking into here
+		$class_names = EEH_Class_Tools::get_class_names_for_all_callbacks_on_hook(
+			'AHEE__EE_System__register_shortcodes_modules_and_addons'
+		);
+		if (! empty($class_names)) {
+			$msg = __(
+				'The following plugins, addons, or modules appear to be incompatible with this version of Event Espresso and were automatically deactivated to avoid fatal errors:',
+				'event_espresso'
+			);
+			$msg .= '<ul>';
+			foreach ($class_names as $class_name) {
+				$msg .= '<li><b>Event Espresso - '
+						. str_replace(
+							array('EE_', 'EEM_', 'EED_', 'EES_', 'EEW_'),
+							'',
+							$class_name
+						) . '</b></li>';
+			}
+			$msg .= '</ul>';
+			$msg .= __(
+				'Compatibility issues can be avoided and/or resolved by keeping addons and plugins updated to the latest version.',
+				'event_espresso'
+			);
+			// save list of incompatible addons to wp-options for later use
+			add_option('ee_incompatible_addons', $class_names, '', 'no');
+			if (is_admin()) {
+				EE_Error::add_error($msg, __FILE__, __FUNCTION__, __LINE__);
+			}
+		}
+	}
+
+
+	/**
+	 * brew_espresso
+	 * begins the process of setting hooks for initializing EE in the correct order
+	 * This is happening on the 'AHEE__EE_Bootstrap__brew_espresso' hook point
+	 * which runs during the WP 'plugins_loaded' action at priority 9
+	 *
+	 * @return void
+	 */
+	public function brew_espresso()
+	{
+		do_action('AHEE__EE_System__brew_espresso__begin', $this);
+		// load some final core systems
+		add_action('init', array($this, 'set_hooks_for_core'), 1);
+		add_action('init', array($this, 'perform_activations_upgrades_and_migrations'), 3);
+		add_action('init', array($this, 'load_CPTs_and_session'), 5);
+		add_action('init', array($this, 'load_controllers'), 7);
+		add_action('init', array($this, 'core_loaded_and_ready'), 9);
+		add_action('init', array($this, 'initialize'), 10);
+		add_action('init', array($this, 'initialize_last'), 100);
+		if (is_admin() && apply_filters('FHEE__EE_System__brew_espresso__load_pue', true)) {
+			// pew pew pew
+			$this->loader->getShared('EventEspresso\core\services\licensing\LicenseService');
+			do_action('AHEE__EE_System__brew_espresso__after_pue_init');
+		}
+		do_action('AHEE__EE_System__brew_espresso__complete', $this);
+	}
+
+
+	/**
+	 *    set_hooks_for_core
+	 *
+	 * @access public
+	 * @return    void
+	 * @throws EE_Error
+	 */
+	public function set_hooks_for_core()
+	{
+		$this->_deactivate_incompatible_addons();
+		do_action('AHEE__EE_System__set_hooks_for_core');
+		$this->loader->getShared('EventEspresso\core\domain\values\session\SessionLifespan');
+		// caps need to be initialized on every request so that capability maps are set.
+		// @see https://events.codebasehq.com/projects/event-espresso/tickets/8674
+		$this->registry->CAP->init_caps();
+	}
+
+
+	/**
+	 * Using the information gathered in EE_System::_incompatible_addon_error,
+	 * deactivates any addons considered incompatible with the current version of EE
+	 */
+	private function _deactivate_incompatible_addons()
+	{
+		$incompatible_addons = get_option('ee_incompatible_addons', array());
+		if (! empty($incompatible_addons)) {
+			$active_plugins = get_option('active_plugins', array());
+			foreach ($active_plugins as $active_plugin) {
+				foreach ($incompatible_addons as $incompatible_addon) {
+					if (strpos($active_plugin, $incompatible_addon) !== false) {
+						unset($_GET['activate']);
+						espresso_deactivate_plugin($active_plugin);
+					}
+				}
+			}
+		}
+	}
+
+
+	/**
+	 *    perform_activations_upgrades_and_migrations
+	 *
+	 * @access public
+	 * @return    void
+	 */
+	public function perform_activations_upgrades_and_migrations()
+	{
+		do_action('AHEE__EE_System__perform_activations_upgrades_and_migrations');
+	}
+
+
+	/**
+	 * @return void
+	 * @throws DomainException
+	 */
+	public function load_CPTs_and_session()
+	{
+		do_action('AHEE__EE_System__load_CPTs_and_session__start');
+		/** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies $register_custom_taxonomies */
+		$register_custom_taxonomies = $this->loader->getShared(
+			'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomies'
+		);
+		$register_custom_taxonomies->registerCustomTaxonomies();
+		/** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes $register_custom_post_types */
+		$register_custom_post_types = $this->loader->getShared(
+			'EventEspresso\core\domain\services\custom_post_types\RegisterCustomPostTypes'
+		);
+		$register_custom_post_types->registerCustomPostTypes();
+		/** @var EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomyTerms $register_custom_taxonomy_terms */
+		$register_custom_taxonomy_terms = $this->loader->getShared(
+			'EventEspresso\core\domain\services\custom_post_types\RegisterCustomTaxonomyTerms'
+		);
+		$register_custom_taxonomy_terms->registerCustomTaxonomyTerms();
+		// load legacy Custom Post Types and Taxonomies
+		$this->loader->getShared('EE_Register_CPTs');
+		do_action('AHEE__EE_System__load_CPTs_and_session__complete');
+	}
+
+
+	/**
+	 * load_controllers
+	 * this is the best place to load any additional controllers that needs access to EE core.
+	 * it is expected that all basic core EE systems, that are not dependant on the current request are loaded at this
+	 * time
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function load_controllers()
+	{
+		do_action('AHEE__EE_System__load_controllers__start');
+		// let's get it started
+		if (! $this->maintenance_mode->level()
+			&& ($this->request->isFrontend() || $this->request->isFrontAjax())
+		) {
+			do_action('AHEE__EE_System__load_controllers__load_front_controllers');
+			$this->loader->getShared('EE_Front_Controller');
+		} elseif ($this->request->isAdmin() || $this->request->isAdminAjax()) {
+			do_action('AHEE__EE_System__load_controllers__load_admin_controllers');
+			$this->loader->getShared('EE_Admin');
+		} elseif ($this->request->isWordPressHeartbeat()) {
+			$this->loader->getShared('EventEspresso\core\domain\services\admin\ajax\WordpressHeartbeat');
+		}
+		do_action('AHEE__EE_System__load_controllers__complete');
+	}
+
+
+	/**
+	 * core_loaded_and_ready
+	 * all of the basic EE core should be loaded at this point and available regardless of M-Mode
+	 *
+	 * @access public
+	 * @return void
+	 * @throws Exception
+	 */
+	public function core_loaded_and_ready()
+	{
+		if ($this->request->isAdmin()
+			|| $this->request->isFrontend()
+			|| $this->request->isIframe()
+			|| $this->request->isWordPressApi()
+		) {
+			try {
+				$this->loader->getShared('EventEspresso\core\services\assets\Registry');
+				$this->loader->getShared('EventEspresso\core\domain\services\assets\CoreAssetManager');
+				if ($this->canLoadBlocks()) {
+					$this->loader->getShared(
+						'EventEspresso\core\services\editor\BlockRegistrationManager'
+					);
+				}
+			} catch (Exception $exception) {
+				new ExceptionStackTraceDisplay($exception);
+			}
+		}
+		if ($this->request->isAdmin()
+			|| $this->request->isEeAjax()
+			|| $this->request->isFrontend()
+		) {
+			$this->loader->getShared('EE_Session');
+		}
+		// integrate WP_Query with the EE models
+		$this->loader->getShared('EE_CPT_Strategy');
+		do_action('AHEE__EE_System__core_loaded_and_ready');
+		// always load template tags, because it's faster than checking if it's a front-end request, and many page
+		// builders require these even on the front-end
+		require_once EE_PUBLIC . 'template_tags.php';
+		// load handler for GraphQL requests
+		if (class_exists('WPGraphQL') && $this->request->isGQL()) {
+			try {
+				$graphQL_manager = $this->loader->getShared(
+					'EventEspresso\core\services\graphql\GraphQLManager'
+				);
+				$graphQL_manager->init();
+			} catch (Exception $exception) {
+				new ExceptionStackTraceDisplay($exception);
+			}
+		}
+		do_action('AHEE__EE_System__set_hooks_for_shortcodes_modules_and_addons');
+	}
+
+
+	/**
+	 * initialize
+	 * this is the best place to begin initializing client code
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function initialize()
+	{
+		do_action('AHEE__EE_System__initialize');
+	}
+
+
+	/**
+	 * initialize_last
+	 * this is run really late during the WP init hook point, and ensures that mostly everything else that needs to
+	 * initialize has done so
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public function initialize_last()
+	{
+		do_action('AHEE__EE_System__initialize_last');
+		/** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
+		$rewrite_rules = $this->loader->getShared(
+			'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
+		);
+		$rewrite_rules->flushRewriteRules();
+		add_action('admin_bar_init', array($this, 'addEspressoToolbar'));
+		if (($this->request->isAjax() || $this->request->isAdmin())
+			&& $this->maintenance_mode->models_can_query()) {
+			$this->loader->getShared('EventEspresso\core\services\privacy\export\PersonalDataExporterManager');
+			$this->loader->getShared('EventEspresso\core\services\privacy\erasure\PersonalDataEraserManager');
+		}
+	}
+
+
+	/**
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public function addEspressoToolbar()
+	{
+		$this->loader->getShared(
+			'EventEspresso\core\domain\services\admin\AdminToolBar',
+			array($this->registry->CAP)
+		);
+	}
+
+
+	/**
+	 * do_not_cache
+	 * sets no cache headers and defines no cache constants for WP plugins
+	 *
+	 * @access public
+	 * @return void
+	 */
+	public static function do_not_cache()
+	{
+		// set no cache constants
+		if (! defined('DONOTCACHEPAGE')) {
+			define('DONOTCACHEPAGE', true);
+		}
+		if (! defined('DONOTCACHCEOBJECT')) {
+			define('DONOTCACHCEOBJECT', true);
+		}
+		if (! defined('DONOTCACHEDB')) {
+			define('DONOTCACHEDB', true);
+		}
+		// add no cache headers
+		add_action('send_headers', array('EE_System', 'nocache_headers'), 10);
+		// plus a little extra for nginx and Google Chrome
+		add_filter('nocache_headers', array('EE_System', 'extra_nocache_headers'), 10, 1);
+		// prevent browsers from prefetching of the rel='next' link, because it may contain content that interferes with the registration process
+		remove_action('wp_head', 'adjacent_posts_rel_link_wp_head');
+	}
+
+
+	/**
+	 *    extra_nocache_headers
+	 *
+	 * @access    public
+	 * @param $headers
+	 * @return    array
+	 */
+	public static function extra_nocache_headers($headers)
+	{
+		// for NGINX
+		$headers['X-Accel-Expires'] = 0;
+		// plus extra for Google Chrome since it doesn't seem to respect "no-cache", but WILL respect "no-store"
+		$headers['Cache-Control'] = 'no-store, no-cache, must-revalidate, max-age=0';
+		return $headers;
+	}
+
+
+	/**
+	 *    nocache_headers
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function nocache_headers()
+	{
+		nocache_headers();
+	}
+
+
+	/**
+	 * simply hooks into "wp_list_pages_exclude" filter (for wp_list_pages method) and makes sure EE critical pages are
+	 * never returned with the function.
+	 *
+	 * @param  array $exclude_array any existing pages being excluded are in this array.
+	 * @return array
+	 */
+	public function remove_pages_from_wp_list_pages($exclude_array)
+	{
+		return array_merge($exclude_array, $this->registry->CFG->core->get_critical_pages_array());
+	}
+
+
+	/**
+	 * Return whether blocks can be registered/loaded or not.
+	 * @return bool
+	 */
+	private function canLoadBlocks()
+	{
+		return apply_filters('FHEE__EE_System__canLoadBlocks', true)
+			   && function_exists('register_block_type')
+			   // don't load blocks if in the Divi page builder editor context
+			   // @see https://github.com/eventespresso/event-espresso-core/issues/814
+			   && ! $this->request->getRequestParam('et_fb', false);
+	}
 }

caffeinated/admin/extend/events/Extend_Events_Admin_Page.core.php

Indentation +1417 added lines, -1417 removed lines

@@ -18,1421 +18,1421 @@
 class Extend_Events_Admin_Page extends Events_Admin_Page
 {
 
-    /**
-     * @var AdvancedEditorAdminFormSection
-     */
-    protected $advanced_editor_admin_form;
-
-    /**
-     * @var AdvancedEditorEntityData
-     */
-    protected $advanced_editor_data;
-
-
-    /**
-     * Extend_Events_Admin_Page constructor.
-     *
-     * @param bool $routing
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function __construct($routing = true)
-    {
-        if (! defined('EVENTS_CAF_TEMPLATE_PATH')) {
-            define('EVENTS_CAF_TEMPLATE_PATH', EE_CORE_CAF_ADMIN_EXTEND . 'events/templates/');
-            define('EVENTS_CAF_ASSETS', EE_CORE_CAF_ADMIN_EXTEND . 'events/assets/');
-            define('EVENTS_CAF_ASSETS_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'events/assets/');
-        }
-        parent::__construct($routing);
-    }
-
-
-    /**
-     * Sets routes.
-     *
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws Exception
-     */
-    protected function _extend_page_config()
-    {
-        $this->_admin_base_path = EE_CORE_CAF_ADMIN_EXTEND . 'events';
-        // is there a evt_id in the request?
-        $evt_id = ! empty($this->_req_data['EVT_ID']) && ! is_array($this->_req_data['EVT_ID'])
-            ? $this->_req_data['EVT_ID']
-            : 0;
-        $evt_id = ! empty($this->_req_data['post']) ? $this->_req_data['post'] : $evt_id;
-        // tkt_id?
-        $tkt_id = ! empty($this->_req_data['TKT_ID']) && ! is_array($this->_req_data['TKT_ID'])
-            ? $this->_req_data['TKT_ID']
-            : 0;
-        $new_page_routes = array(
-            'duplicate_event'          => array(
-                'func'       => '_duplicate_event',
-                'capability' => 'ee_edit_event',
-                'obj_id'     => $evt_id,
-                'noheader'   => true,
-            ),
-            'ticket_list_table'        => array(
-                'func'       => '_tickets_overview_list_table',
-                'capability' => 'ee_read_default_tickets',
-            ),
-            'trash_ticket'             => array(
-                'func'       => '_trash_or_restore_ticket',
-                'capability' => 'ee_delete_default_ticket',
-                'obj_id'     => $tkt_id,
-                'noheader'   => true,
-                'args'       => array('trash' => true),
-            ),
-            'trash_tickets'            => array(
-                'func'       => '_trash_or_restore_ticket',
-                'capability' => 'ee_delete_default_tickets',
-                'noheader'   => true,
-                'args'       => array('trash' => true),
-            ),
-            'restore_ticket'           => array(
-                'func'       => '_trash_or_restore_ticket',
-                'capability' => 'ee_delete_default_ticket',
-                'obj_id'     => $tkt_id,
-                'noheader'   => true,
-            ),
-            'restore_tickets'          => array(
-                'func'       => '_trash_or_restore_ticket',
-                'capability' => 'ee_delete_default_tickets',
-                'noheader'   => true,
-            ),
-            'delete_ticket'            => array(
-                'func'       => '_delete_ticket',
-                'capability' => 'ee_delete_default_ticket',
-                'obj_id'     => $tkt_id,
-                'noheader'   => true,
-            ),
-            'delete_tickets'           => array(
-                'func'       => '_delete_ticket',
-                'capability' => 'ee_delete_default_tickets',
-                'noheader'   => true,
-            ),
-            'import_page'              => array(
-                'func'       => '_import_page',
-                'capability' => 'import',
-            ),
-            'import'                   => array(
-                'func'       => '_import_events',
-                'capability' => 'import',
-                'noheader'   => true,
-            ),
-            'import_events'            => array(
-                'func'       => '_import_events',
-                'capability' => 'import',
-                'noheader'   => true,
-            ),
-            'export_events'            => array(
-                'func'       => '_events_export',
-                'capability' => 'export',
-                'noheader'   => true,
-            ),
-            'export_categories'        => array(
-                'func'       => '_categories_export',
-                'capability' => 'export',
-                'noheader'   => true,
-            ),
-            'sample_export_file'       => array(
-                'func'       => '_sample_export_file',
-                'capability' => 'export',
-                'noheader'   => true,
-            ),
-            'update_template_settings' => array(
-                'func'       => '_update_template_settings',
-                'capability' => 'manage_options',
-                'noheader'   => true,
-            ),
-        );
-        $this->_page_routes = array_merge($this->_page_routes, $new_page_routes);
-        // partial route/config override
-        $this->_page_config['import_events']['metaboxes'] = $this->_default_espresso_metaboxes;
-        $this->_page_config['create_new']['metaboxes'][] = '_premium_event_editor_meta_boxes';
-        $this->_page_config['create_new']['qtips'][] = 'EE_Event_Editor_Tips';
-        $this->_page_config['edit']['qtips'][] = 'EE_Event_Editor_Tips';
-        $this->_page_config['edit']['metaboxes'][] = '_premium_event_editor_meta_boxes';
-        $this->_page_config['default']['list_table'] = 'Extend_Events_Admin_List_Table';
-        // add tickets tab but only if there are more than one default ticket!
-        $tkt_count = EEM_Ticket::instance()->count_deleted_and_undeleted(
-            array(array('TKT_is_default' => 1)),
-            'TKT_ID',
-            true
-        );
-        if ($tkt_count > 1) {
-            $new_page_config = array(
-                'ticket_list_table' => array(
-                    'nav'           => array(
-                        'label' => esc_html__('Default Tickets', 'event_espresso'),
-                        'order' => 60,
-                    ),
-                    'list_table'    => 'Tickets_List_Table',
-                    'require_nonce' => false,
-                ),
-            );
-        }
-        // template settings
-        $new_page_config['template_settings'] = array(
-            'nav'           => array(
-                'label' => esc_html__('Templates', 'event_espresso'),
-                'order' => 30,
-            ),
-            'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
-            'help_tabs'     => array(
-                'general_settings_templates_help_tab' => array(
-                    'title'    => esc_html__('Templates', 'event_espresso'),
-                    'filename' => 'general_settings_templates',
-                ),
-            ),
-            'help_tour'     => array('Templates_Help_Tour'),
-            'require_nonce' => false,
-        );
-        $this->_page_config = array_merge($this->_page_config, $new_page_config);
-        // add filters and actions
-        // modifying _views
-        add_filter(
-            'FHEE_event_datetime_metabox_add_additional_date_time_template',
-            array($this, 'add_additional_datetime_button'),
-            10,
-            2
-        );
-        add_filter(
-            'FHEE_event_datetime_metabox_clone_button_template',
-            array($this, 'add_datetime_clone_button'),
-            10,
-            2
-        );
-        add_filter(
-            'FHEE_event_datetime_metabox_timezones_template',
-            array($this, 'datetime_timezones_template'),
-            10,
-            2
-        );
-        // filters for event list table
-        add_filter('FHEE__Extend_Events_Admin_List_Table__filters', array($this, 'list_table_filters'), 10, 2);
-        add_filter(
-            'FHEE__Events_Admin_List_Table__column_actions__action_links',
-            array($this, 'extra_list_table_actions'),
-            10,
-            2
-        );
-        // legend item
-        add_filter('FHEE__Events_Admin_Page___event_legend_items__items', array($this, 'additional_legend_items'));
-        add_action('admin_init', array($this, 'admin_init'));
-       // load additional handlers
-        $this->handleActionRequest();
-    }
-
-
-    private function getRequestAction()
-    {
-        return isset($this->_req_data['action']) ? sanitize_key($this->_req_data['action']) : null;
-    }
-
-
-    /**
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws Exception
-     */
-    private function handleActionRequest()
-    {
-        $action = $this->getRequestAction();
-        if ($action) {
-            // setup Advanced Editor ???
-            if ($action === 'default_event_settings' || $action === 'update_default_event_settings') {
-                $this->advanced_editor_admin_form = $this->loader->getShared(
-                    'EventEspresso\core\domain\services\admin\events\default_settings\AdvancedEditorAdminFormSection'
-                );
-            }
-            $admin_config = $this->loader->getShared('EE_Admin_Config');
-            // load handler for GraphQL requests and AdvancedEditorEntityData
-            if (($action === 'edit' || $action === 'create_new')
-                && $admin_config instanceof EE_Admin_Config
-                && class_exists('WPGraphQL')
-                && $admin_config->useAdvancedEditor()
-            ) {
-                try {
-                    /** @var EventEspresso\core\services\graphql\GraphQLManager $graphQL_manager */
-                    $graphQL_manager = $this->loader->getShared(
-                        'EventEspresso\core\services\graphql\GraphQLManager'
-                    );
-                    $graphQL_manager->init();
-                    $this->advanced_editor_data = $this->loader->getShared(
-                        'EventEspresso\core\domain\services\admin\events\editor\AdvancedEditorEntityData',
-                        [$this->_cpt_model_obj]
-                    );
-                } catch (Exception $exception) {
-                    new ExceptionStackTraceDisplay($exception);
-                }
-            }
-        }
-    }
-
-
-    /**
-     * admin_init
-     */
-    public function admin_init()
-    {
-        EE_Registry::$i18n_js_strings = array_merge(
-            EE_Registry::$i18n_js_strings,
-            array(
-                'image_confirm'          => esc_html__(
-                    'Do you really want to delete this image? Please remember to update your event to complete the removal.',
-                    'event_espresso'
-                ),
-                'event_starts_on'        => esc_html__('Event Starts on', 'event_espresso'),
-                'event_ends_on'          => esc_html__('Event Ends on', 'event_espresso'),
-                'event_datetime_actions' => esc_html__('Actions', 'event_espresso'),
-                'event_clone_dt_msg'     => esc_html__('Clone this Event Date and Time', 'event_espresso'),
-                'remove_event_dt_msg'    => esc_html__('Remove this Event Time', 'event_espresso'),
-            )
-        );
-    }
-
-
-    /**
-     * Add per page screen options to the default ticket list table view.
-     *
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _add_screen_options_ticket_list_table()
-    {
-        $this->_per_page_screen_option();
-    }
-
-
-    /**
-     * @param string $return
-     * @param int    $id
-     * @param string $new_title
-     * @param string $new_slug
-     * @return string
-     */
-    public function extra_permalink_field_buttons($return, $id, $new_title, $new_slug)
-    {
-        $return = parent::extra_permalink_field_buttons($return, $id, $new_title, $new_slug);
-        // make sure this is only when editing
-        if (! empty($id)) {
-            $href = EE_Admin_Page::add_query_args_and_nonce(
-                array('action' => 'duplicate_event', 'EVT_ID' => $id),
-                $this->_admin_base_url
-            );
-            $title = esc_attr__('Duplicate Event', 'event_espresso');
-            $return .= '<a href="'
-                       . $href
-                       . '" title="'
-                       . $title
-                       . '" id="ee-duplicate-event-button" class="button button-small"  value="duplicate_event">'
-                       . $title
-                       . '</a>';
-        }
-        return $return;
-    }
-
-
-    /**
-     * Set the list table views for the default ticket list table view.
-     */
-    public function _set_list_table_views_ticket_list_table()
-    {
-        $this->_views = array(
-            'all'     => array(
-                'slug'        => 'all',
-                'label'       => esc_html__('All', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'trash_tickets' => esc_html__('Move to Trash', 'event_espresso'),
-                ),
-            ),
-            'trashed' => array(
-                'slug'        => 'trashed',
-                'label'       => esc_html__('Trash', 'event_espresso'),
-                'count'       => 0,
-                'bulk_action' => array(
-                    'restore_tickets' => esc_html__('Restore from Trash', 'event_espresso'),
-                    'delete_tickets'  => esc_html__('Delete Permanently', 'event_espresso'),
-                ),
-            ),
-        );
-    }
-
-
-    /**
-     * Enqueue scripts and styles for the event editor.
-     */
-    public function load_scripts_styles_edit()
-    {
-        wp_register_script(
-            'ee-event-editor-heartbeat',
-            EVENTS_CAF_ASSETS_URL . 'event-editor-heartbeat.js',
-            array('ee_admin_js', 'heartbeat'),
-            EVENT_ESPRESSO_VERSION,
-            true
-        );
-        wp_enqueue_script('ee-accounting');
-        // styles
-        wp_enqueue_style('espresso-ui-theme');
-        wp_enqueue_script('event_editor_js');
-        wp_enqueue_script('ee-event-editor-heartbeat');
-    }
-
-
-    /**
-     * Returns template for the additional datetime.
-     *
-     * @param $template
-     * @param $template_args
-     * @return mixed
-     * @throws DomainException
-     */
-    public function add_additional_datetime_button($template, $template_args)
-    {
-        return EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_add_additional_time.template.php',
-            $template_args,
-            true
-        );
-    }
-
-
-    /**
-     * Returns the template for cloning a datetime.
-     *
-     * @param $template
-     * @param $template_args
-     * @return mixed
-     * @throws DomainException
-     */
-    public function add_datetime_clone_button($template, $template_args)
-    {
-        return EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_metabox_clone_button.template.php',
-            $template_args,
-            true
-        );
-    }
-
-
-    /**
-     * Returns the template for datetime timezones.
-     *
-     * @param $template
-     * @param $template_args
-     * @return mixed
-     * @throws DomainException
-     */
-    public function datetime_timezones_template($template, $template_args)
-    {
-        return EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_timezones.template.php',
-            $template_args,
-            true
-        );
-    }
-
-
-    /**
-     * Sets the views for the default list table view.
-     */
-    protected function _set_list_table_views_default()
-    {
-        parent::_set_list_table_views_default();
-        $new_views = array(
-            'today' => array(
-                'slug'        => 'today',
-                'label'       => esc_html__('Today', 'event_espresso'),
-                'count'       => $this->total_events_today(),
-                'bulk_action' => array(
-                    'trash_events' => esc_html__('Move to Trash', 'event_espresso'),
-                ),
-            ),
-            'month' => array(
-                'slug'        => 'month',
-                'label'       => esc_html__('This Month', 'event_espresso'),
-                'count'       => $this->total_events_this_month(),
-                'bulk_action' => array(
-                    'trash_events' => esc_html__('Move to Trash', 'event_espresso'),
-                ),
-            ),
-        );
-        $this->_views = array_merge($this->_views, $new_views);
-    }
-
-
-    /**
-     * Returns the extra action links for the default list table view.
-     *
-     * @param array    $action_links
-     * @param EE_Event $event
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function extra_list_table_actions(array $action_links, EE_Event $event)
-    {
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_read_registrations',
-            'espresso_registrations_reports',
-            $event->ID()
-        )
-        ) {
-            $reports_query_args = array(
-                'action' => 'reports',
-                'EVT_ID' => $event->ID(),
-            );
-            $reports_link = EE_Admin_Page::add_query_args_and_nonce($reports_query_args, REG_ADMIN_URL);
-            $action_links[] = '<a href="'
-                              . $reports_link
-                              . '" title="'
-                              . esc_attr__('View Report', 'event_espresso')
-                              . '"><div class="dashicons dashicons-chart-bar"></div></a>'
-                              . "\n\t";
-        }
-        if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
-            EE_Registry::instance()->load_helper('MSG_Template');
-            $action_links[] = EEH_MSG_Template::get_message_action_link(
-                'see_notifications_for',
-                null,
-                array('EVT_ID' => $event->ID())
-            );
-        }
-        return $action_links;
-    }
-
-
-    /**
-     * @param $items
-     * @return mixed
-     */
-    public function additional_legend_items($items)
-    {
-        if (EE_Registry::instance()->CAP->current_user_can(
-            'ee_read_registrations',
-            'espresso_registrations_reports'
-        )
-        ) {
-            $items['reports'] = array(
-                'class' => 'dashicons dashicons-chart-bar',
-                'desc'  => esc_html__('Event Reports', 'event_espresso'),
-            );
-        }
-        if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
-            $related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
-            // $related_for_icon can sometimes be a string so 'css_class' would be an illegal offset
-            // (can only use numeric offsets when treating strings as arrays)
-            if (is_array($related_for_icon) && isset($related_for_icon['css_class'], $related_for_icon['label'])) {
-                $items['view_related_messages'] = array(
-                    'class' => $related_for_icon['css_class'],
-                    'desc'  => $related_for_icon['label'],
-                );
-            }
-        }
-        return $items;
-    }
-
-
-    /**
-     * This is the callback method for the duplicate event route
-     * Method looks for 'EVT_ID' in the request and retrieves that event and its details and duplicates them
-     * into a new event.  We add a hook so that any plugins that add extra event details can hook into this
-     * action.  Note that the dupe will have **DUPLICATE** as its title and slug.
-     * After duplication the redirect is to the new event edit page.
-     *
-     * @return void
-     * @throws EE_Error If EE_Event is not available with given ID
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @access protected
-     */
-    protected function _duplicate_event()
-    {
-        // first make sure the ID for the event is in the request.
-        //  If it isn't then we need to bail and redirect back to overview list table (cause how did we get here?)
-        if (! isset($this->_req_data['EVT_ID'])) {
-            EE_Error::add_error(
-                esc_html__(
-                    'In order to duplicate an event an Event ID is required.  None was given.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            $this->_redirect_after_action(false, '', '', array(), true);
-            return;
-        }
-        // k we've got EVT_ID so let's use that to get the event we'll duplicate
-        $orig_event = EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID']);
-        if (! $orig_event instanceof EE_Event) {
-            throw new EE_Error(
-                sprintf(
-                    esc_html__('An EE_Event object could not be retrieved for the given ID (%s)', 'event_espresso'),
-                    $this->_req_data['EVT_ID']
-                )
-            );
-        }
-        // k now let's clone the $orig_event before getting relations
-        $new_event = clone $orig_event;
-        // original datetimes
-        $orig_datetimes = $orig_event->get_many_related('Datetime');
-        // other original relations
-        $orig_ven = $orig_event->get_many_related('Venue');
-        // reset the ID and modify other details to make it clear this is a dupe
-        $new_event->set('EVT_ID', 0);
-        $new_name = $new_event->name() . ' ' . esc_html__('**DUPLICATE**', 'event_espresso');
-        $new_event->set('EVT_name', $new_name);
-        $new_event->set(
-            'EVT_slug',
-            wp_unique_post_slug(
-                sanitize_title($orig_event->name()),
-                0,
-                'publish',
-                'espresso_events',
-                0
-            )
-        );
-        $new_event->set('status', 'draft');
-        // duplicate discussion settings
-        $new_event->set('comment_status', $orig_event->get('comment_status'));
-        $new_event->set('ping_status', $orig_event->get('ping_status'));
-        // save the new event
-        $new_event->save();
-        // venues
-        foreach ($orig_ven as $ven) {
-            $new_event->_add_relation_to($ven, 'Venue');
-        }
-        $new_event->save();
-        // now we need to get the question group relations and handle that
-        // first primary question groups
-        $orig_primary_qgs = $orig_event->get_many_related(
-            'Question_Group',
-            [['Event_Question_Group.EQG_primary' => true]]
-        );
-        if (! empty($orig_primary_qgs)) {
-            foreach ($orig_primary_qgs as $id => $obj) {
-                if ($obj instanceof EE_Question_Group) {
-                    $new_event->_add_relation_to($obj, 'Question_Group', ['EQG_primary' => true]);
-                }
-            }
-        }
-        // next additional attendee question groups
-        $orig_additional_qgs = $orig_event->get_many_related(
-            'Question_Group',
-            [['Event_Question_Group.EQG_additional' => true]]
-        );
-        if (! empty($orig_additional_qgs)) {
-            foreach ($orig_additional_qgs as $id => $obj) {
-                if ($obj instanceof EE_Question_Group) {
-                    $new_event->_add_relation_to($obj, 'Question_Group', ['EQG_additional' => true]);
-                }
-            }
-        }
-
-        $new_event->save();
-
-        // k now that we have the new event saved we can loop through the datetimes and start adding relations.
-        $cloned_tickets = array();
-        foreach ($orig_datetimes as $orig_dtt) {
-            if (! $orig_dtt instanceof EE_Datetime) {
-                continue;
-            }
-            $new_dtt = clone $orig_dtt;
-            $orig_tkts = $orig_dtt->tickets();
-            // save new dtt then add to event
-            $new_dtt->set('DTT_ID', 0);
-            $new_dtt->set('DTT_sold', 0);
-            $new_dtt->set_reserved(0);
-            $new_dtt->save();
-            $new_event->_add_relation_to($new_dtt, 'Datetime');
-            $new_event->save();
-            // now let's get the ticket relations setup.
-            foreach ((array) $orig_tkts as $orig_tkt) {
-                // it's possible a datetime will have no tickets so let's verify we HAVE a ticket first.
-                if (! $orig_tkt instanceof EE_Ticket) {
-                    continue;
-                }
-                // is this ticket archived?  If it is then let's skip
-                if ($orig_tkt->get('TKT_deleted')) {
-                    continue;
-                }
-                // does this original ticket already exist in the clone_tickets cache?
-                //  If so we'll just use the new ticket from it.
-                if (isset($cloned_tickets[ $orig_tkt->ID() ])) {
-                    $new_tkt = $cloned_tickets[ $orig_tkt->ID() ];
-                } else {
-                    $new_tkt = clone $orig_tkt;
-                    // get relations on the $orig_tkt that we need to setup.
-                    $orig_prices = $orig_tkt->prices();
-                    $new_tkt->set('TKT_ID', 0);
-                    $new_tkt->set('TKT_sold', 0);
-                    $new_tkt->set('TKT_reserved', 0);
-                    $new_tkt->save(); // make sure new ticket has ID.
-                    // price relations on new ticket need to be setup.
-                    foreach ($orig_prices as $orig_price) {
-                        $new_price = clone $orig_price;
-                        $new_price->set('PRC_ID', 0);
-                        $new_price->save();
-                        $new_tkt->_add_relation_to($new_price, 'Price');
-                        $new_tkt->save();
-                    }
-
-                    do_action(
-                        'AHEE__Extend_Events_Admin_Page___duplicate_event__duplicate_ticket__after',
-                        $orig_tkt,
-                        $new_tkt,
-                        $orig_prices,
-                        $orig_event,
-                        $orig_dtt,
-                        $new_dtt
-                    );
-                }
-                // k now we can add the new ticket as a relation to the new datetime
-                // and make sure its added to our cached $cloned_tickets array
-                // for use with later datetimes that have the same ticket.
-                $new_dtt->_add_relation_to($new_tkt, 'Ticket');
-                $new_dtt->save();
-                $cloned_tickets[ $orig_tkt->ID() ] = $new_tkt;
-            }
-        }
-        // clone taxonomy information
-        $taxonomies_to_clone_with = apply_filters(
-            'FHEE__Extend_Events_Admin_Page___duplicate_event__taxonomies_to_clone',
-            array('espresso_event_categories', 'espresso_event_type', 'post_tag')
-        );
-        // get terms for original event (notice)
-        $orig_terms = wp_get_object_terms($orig_event->ID(), $taxonomies_to_clone_with);
-        // loop through terms and add them to new event.
-        foreach ($orig_terms as $term) {
-            wp_set_object_terms($new_event->ID(), $term->term_id, $term->taxonomy, true);
-        }
-
-        // duplicate other core WP_Post items for this event.
-        // post thumbnail (feature image).
-        $feature_image_id = get_post_thumbnail_id($orig_event->ID());
-        if ($feature_image_id) {
-            update_post_meta($new_event->ID(), '_thumbnail_id', $feature_image_id);
-        }
-
-        // duplicate page_template setting
-        $page_template = get_post_meta($orig_event->ID(), '_wp_page_template', true);
-        if ($page_template) {
-            update_post_meta($new_event->ID(), '_wp_page_template', $page_template);
-        }
-
-        do_action('AHEE__Extend_Events_Admin_Page___duplicate_event__after', $new_event, $orig_event);
-        // now let's redirect to the edit page for this duplicated event if we have a new event id.
-        if ($new_event->ID()) {
-            $redirect_args = array(
-                'post'   => $new_event->ID(),
-                'action' => 'edit',
-            );
-            EE_Error::add_success(
-                esc_html__(
-                    'Event successfully duplicated.  Please review the details below and make any necessary edits',
-                    'event_espresso'
-                )
-            );
-        } else {
-            $redirect_args = array(
-                'action' => 'default',
-            );
-            EE_Error::add_error(
-                esc_html__('Not able to duplicate event.  Something went wrong.', 'event_espresso'),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        $this->_redirect_after_action(false, '', '', $redirect_args, true);
-    }
-
-
-    /**
-     * Generates output for the import page.
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _import_page()
-    {
-        $title = esc_html__('Import', 'event_espresso');
-        $intro = esc_html__(
-            'If you have a previously exported Event Espresso 4 information in a Comma Separated Value (CSV) file format, you can upload the file here: ',
-            'event_espresso'
-        );
-        $form_url = EVENTS_ADMIN_URL;
-        $action = 'import_events';
-        $type = 'csv';
-        $this->_template_args['form'] = EE_Import::instance()->upload_form(
-            $title,
-            $intro,
-            $form_url,
-            $action,
-            $type
-        );
-        $this->_template_args['sample_file_link'] = EE_Admin_Page::add_query_args_and_nonce(
-            array('action' => 'sample_export_file'),
-            $this->_admin_base_url
-        );
-        $content = EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'import_page.template.php',
-            $this->_template_args,
-            true
-        );
-        $this->_template_args['admin_page_content'] = $content;
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    /**
-     * _import_events
-     * This handles displaying the screen and running imports for importing events.
-     *
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _import_events()
-    {
-        require_once(EE_CLASSES . 'EE_Import.class.php');
-        $success = EE_Import::instance()->import();
-        $this->_redirect_after_action($success, 'Import File', 'ran', array('action' => 'import_page'), true);
-    }
-
-
-    /**
-     * _events_export
-     * Will export all (or just the given event) to a Excel compatible file.
-     *
-     * @access protected
-     * @return void
-     */
-    protected function _events_export()
-    {
-        if (isset($this->_req_data['EVT_ID'])) {
-            $event_ids = $this->_req_data['EVT_ID'];
-        } elseif (isset($this->_req_data['EVT_IDs'])) {
-            $event_ids = $this->_req_data['EVT_IDs'];
-        } else {
-            $event_ids = null;
-        }
-        // todo: I don't like doing this but it'll do until we modify EE_Export Class.
-        $new_request_args = array(
-            'export' => 'report',
-            'action' => 'all_event_data',
-            'EVT_ID' => $event_ids,
-        );
-        $this->_req_data = array_merge($this->_req_data, $new_request_args);
-        if (is_readable(EE_CLASSES . 'EE_Export.class.php')) {
-            require_once(EE_CLASSES . 'EE_Export.class.php');
-            $EE_Export = EE_Export::instance($this->_req_data);
-            $EE_Export->export();
-        }
-    }
-
-
-    /**
-     * handle category exports()
-     *
-     * @return void
-     */
-    protected function _categories_export()
-    {
-        // todo: I don't like doing this but it'll do until we modify EE_Export Class.
-        $new_request_args = array(
-            'export'       => 'report',
-            'action'       => 'categories',
-            'category_ids' => $this->_req_data['EVT_CAT_ID'],
-        );
-        $this->_req_data = array_merge($this->_req_data, $new_request_args);
-        if (is_readable(EE_CLASSES . 'EE_Export.class.php')) {
-            require_once(EE_CLASSES . 'EE_Export.class.php');
-            $EE_Export = EE_Export::instance($this->_req_data);
-            $EE_Export->export();
-        }
-    }
-
-
-    /**
-     * Creates a sample CSV file for importing
-     */
-    protected function _sample_export_file()
-    {
-        // require_once(EE_CLASSES . 'EE_Export.class.php');
-        EE_Export::instance()->export_sample();
-    }
-
-
-    /*************        Template Settings        *************/
-    /**
-     * Generates template settings page output
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _template_settings()
-    {
-        $this->_template_args['values'] = $this->_yes_no_values;
-        /**
-         * Note leaving this filter in for backward compatibility this was moved in 4.6.x
-         * from General_Settings_Admin_Page to here.
-         */
-        $this->_template_args = apply_filters(
-            'FHEE__General_Settings_Admin_Page__template_settings__template_args',
-            $this->_template_args
-        );
-        $this->_set_add_edit_form_tags('update_template_settings');
-        $this->_set_publish_post_box_vars(null, false, false, null, false);
-        $this->_template_args['admin_page_content'] = EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'template_settings.template.php',
-            $this->_template_args,
-            true
-        );
-        $this->display_admin_page_with_sidebar();
-    }
-
-
-    /**
-     * Handler for updating template settings.
-     *
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _update_template_settings()
-    {
-        /**
-         * Note leaving this filter in for backward compatibility this was moved in 4.6.x
-         * from General_Settings_Admin_Page to here.
-         */
-        EE_Registry::instance()->CFG->template_settings = apply_filters(
-            'FHEE__General_Settings_Admin_Page__update_template_settings__data',
-            EE_Registry::instance()->CFG->template_settings,
-            $this->_req_data
-        );
-        // update custom post type slugs and detect if we need to flush rewrite rules
-        $old_slug = EE_Registry::instance()->CFG->core->event_cpt_slug;
-        EE_Registry::instance()->CFG->core->event_cpt_slug = empty($this->_req_data['event_cpt_slug'])
-            ? EE_Registry::instance()->CFG->core->event_cpt_slug
-            : EEH_URL::slugify($this->_req_data['event_cpt_slug'], 'events');
-        $what = 'Template Settings';
-        $success = $this->_update_espresso_configuration(
-            $what,
-            EE_Registry::instance()->CFG->template_settings,
-            __FILE__,
-            __FUNCTION__,
-            __LINE__
-        );
-        if (EE_Registry::instance()->CFG->core->event_cpt_slug !== $old_slug) {
-            /** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
-            $rewrite_rules = LoaderFactory::getLoader()->getShared(
-                'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
-            );
-            $rewrite_rules->flush();
-        }
-        $this->_redirect_after_action($success, $what, 'updated', array('action' => 'template_settings'));
-    }
-
-
-    /**
-     * _premium_event_editor_meta_boxes
-     * add all metaboxes related to the event_editor
-     *
-     * @access protected
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _premium_event_editor_meta_boxes()
-    {
-        $this->verify_cpt_object();
-        add_meta_box(
-            'espresso_event_editor_event_options',
-            esc_html__('Event Registration Options', 'event_espresso'),
-            array($this, 'registration_options_meta_box'),
-            $this->page_slug,
-            'side',
-            'core'
-        );
-    }
-
-
-    /**
-     * override caf metabox
-     *
-     * @return void
-     * @throws DomainException
-     * @throws EE_Error
-     */
-    public function registration_options_meta_box()
-    {
-        $yes_no_values = array(
-            array('id' => true, 'text' => esc_html__('Yes', 'event_espresso')),
-            array('id' => false, 'text' => esc_html__('No', 'event_espresso')),
-        );
-        $default_reg_status_values = EEM_Registration::reg_status_array(
-            array(
-                EEM_Registration::status_id_cancelled,
-                EEM_Registration::status_id_declined,
-                EEM_Registration::status_id_incomplete,
-                EEM_Registration::status_id_wait_list,
-            ),
-            true
-        );
-        $template_args['active_status'] = $this->_cpt_model_obj->pretty_active_status(false);
-        $template_args['_event'] = $this->_cpt_model_obj;
-        $template_args['additional_limit'] = $this->_cpt_model_obj->additional_limit();
-        $template_args['default_registration_status'] = EEH_Form_Fields::select_input(
-            'default_reg_status',
-            $default_reg_status_values,
-            $this->_cpt_model_obj->default_registration_status()
-        );
-        $template_args['display_description'] = EEH_Form_Fields::select_input(
-            'display_desc',
-            $yes_no_values,
-            $this->_cpt_model_obj->display_description()
-        );
-        $template_args['display_ticket_selector'] = EEH_Form_Fields::select_input(
-            'display_ticket_selector',
-            $yes_no_values,
-            $this->_cpt_model_obj->display_ticket_selector(),
-            '',
-            '',
-            false
-        );
-        $template_args['EVT_default_registration_status'] = EEH_Form_Fields::select_input(
-            'EVT_default_registration_status',
-            $default_reg_status_values,
-            $this->_cpt_model_obj->default_registration_status()
-        );
-        $template_args['additional_registration_options'] = apply_filters(
-            'FHEE__Events_Admin_Page__registration_options_meta_box__additional_registration_options',
-            '',
-            $template_args,
-            $yes_no_values,
-            $default_reg_status_values
-        );
-        EEH_Template::display_template(
-            EVENTS_CAF_TEMPLATE_PATH . 'event_registration_options.template.php',
-            $template_args
-        );
-    }
-
-
-
-    /**
-     * wp_list_table_mods for caf
-     * ============================
-     */
-    /**
-     * hook into list table filters and provide filters for caffeinated list table
-     *
-     * @param array $old_filters    any existing filters present
-     * @param array $list_table_obj the list table object
-     * @return array                  new filters
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public function list_table_filters($old_filters, $list_table_obj)
-    {
-        $filters = array();
-        // first month/year filters
-        $filters[] = $this->espresso_event_months_dropdown();
-        $status = isset($this->_req_data['status']) ? $this->_req_data['status'] : null;
-        // active status dropdown
-        if ($status !== 'draft') {
-            $filters[] = $this->active_status_dropdown(
-                isset($this->_req_data['active_status']) ? $this->_req_data['active_status'] : ''
-            );
-            $filters[] = $this->venuesDropdown(
-                isset($this->_req_data['venue']) ? $this->_req_data['venue'] : ''
-            );
-        }
-        // category filter
-        $filters[] = $this->category_dropdown();
-        return array_merge($old_filters, $filters);
-    }
-
-
-    /**
-     * espresso_event_months_dropdown
-     *
-     * @access public
-     * @return string                dropdown listing month/year selections for events.
-     */
-    public function espresso_event_months_dropdown()
-    {
-        // what we need to do is get all PRIMARY datetimes for all events to filter on.
-        // Note we need to include any other filters that are set!
-        $status = isset($this->_req_data['status']) ? $this->_req_data['status'] : null;
-        // categories?
-        $category = isset($this->_req_data['EVT_CAT']) && $this->_req_data['EVT_CAT'] > 0
-            ? $this->_req_data['EVT_CAT']
-            : null;
-        // active status?
-        $active_status = isset($this->_req_data['active_status']) ? $this->_req_data['active_status'] : null;
-        $cur_date = isset($this->_req_data['month_range']) ? $this->_req_data['month_range'] : '';
-        return EEH_Form_Fields::generate_event_months_dropdown($cur_date, $status, $category, $active_status);
-    }
-
-
-    /**
-     * returns a list of "active" statuses on the event
-     *
-     * @param  string $current_value whatever the current active status is
-     * @return string
-     */
-    public function active_status_dropdown($current_value = '')
-    {
-        $select_name = 'active_status';
-        $values = array(
-            'none'     => esc_html__('Show Active/Inactive', 'event_espresso'),
-            'active'   => esc_html__('Active', 'event_espresso'),
-            'upcoming' => esc_html__('Upcoming', 'event_espresso'),
-            'expired'  => esc_html__('Expired', 'event_espresso'),
-            'inactive' => esc_html__('Inactive', 'event_espresso'),
-        );
-
-        return EEH_Form_Fields::select_input($select_name, $values, $current_value, '', 'wide');
-    }
-
-
-    /**
-     * returns a list of "venues"
-     *
-     * @param string $current_value whatever the current active status is
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function venuesDropdown($current_value = '')
-    {
-        $select_name = 'venue';
-        $values = array(
-            '' => esc_html__('All Venues', 'event_espresso'),
-        );
-        // populate the list of venues.
-        $venue_model = EE_Registry::instance()->load_model('Venue');
-        $venues = $venue_model->get_all(array('order_by' => array('VNU_name' => 'ASC')));
-
-        foreach ($venues as $venue) {
-            $values[ $venue->ID() ] = $venue->name();
-        }
-
-        return EEH_Form_Fields::select_input($select_name, $values, $current_value, '', 'wide');
-    }
-
-
-    /**
-     * output a dropdown of the categories for the category filter on the event admin list table
-     *
-     * @access  public
-     * @return string html
-     */
-    public function category_dropdown()
-    {
-        $cur_cat = isset($this->_req_data['EVT_CAT']) ? $this->_req_data['EVT_CAT'] : -1;
-        return EEH_Form_Fields::generate_event_category_dropdown($cur_cat);
-    }
-
-
-    /**
-     * get total number of events today
-     *
-     * @access public
-     * @return int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function total_events_today()
-    {
-        $start = EEM_Datetime::instance()->convert_datetime_for_query(
-            'DTT_EVT_start',
-            date('Y-m-d') . ' 00:00:00',
-            'Y-m-d H:i:s',
-            'UTC'
-        );
-        $end = EEM_Datetime::instance()->convert_datetime_for_query(
-            'DTT_EVT_start',
-            date('Y-m-d') . ' 23:59:59',
-            'Y-m-d H:i:s',
-            'UTC'
-        );
-        $where = array(
-            'Datetime.DTT_EVT_start' => array('BETWEEN', array($start, $end)),
-        );
-        $count = EEM_Event::instance()->count(array($where, 'caps' => 'read_admin'), 'EVT_ID', true);
-        return $count;
-    }
-
-
-    /**
-     * get total number of events this month
-     *
-     * @access public
-     * @return int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function total_events_this_month()
-    {
-        // Dates
-        $this_year_r = date('Y');
-        $this_month_r = date('m');
-        $days_this_month = date('t');
-        $start = EEM_Datetime::instance()->convert_datetime_for_query(
-            'DTT_EVT_start',
-            $this_year_r . '-' . $this_month_r . '-01 00:00:00',
-            'Y-m-d H:i:s',
-            'UTC'
-        );
-        $end = EEM_Datetime::instance()->convert_datetime_for_query(
-            'DTT_EVT_start',
-            $this_year_r . '-' . $this_month_r . '-' . $days_this_month . ' 23:59:59',
-            'Y-m-d H:i:s',
-            'UTC'
-        );
-        $where = array(
-            'Datetime.DTT_EVT_start' => array('BETWEEN', array($start, $end)),
-        );
-        $count = EEM_Event::instance()->count(array($where, 'caps' => 'read_admin'), 'EVT_ID', true);
-        return $count;
-    }
-
-
-    /** DEFAULT TICKETS STUFF **/
-
-    /**
-     * Output default tickets list table view.
-     *
-     * @throws DomainException
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function _tickets_overview_list_table()
-    {
-        $this->_search_btn_label = esc_html__('Tickets', 'event_espresso');
-        $this->display_admin_list_table_page_with_no_sidebar();
-    }
-
-
-    /**
-     * @param int  $per_page
-     * @param bool $count
-     * @param bool $trashed
-     * @return EE_Soft_Delete_Base_Class[]|int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function get_default_tickets($per_page = 10, $count = false, $trashed = false)
-    {
-        $orderby = empty($this->_req_data['orderby']) ? 'TKT_name' : $this->_req_data['orderby'];
-        $order = empty($this->_req_data['order']) ? 'ASC' : $this->_req_data['order'];
-        switch ($orderby) {
-            case 'TKT_name':
-                $orderby = array('TKT_name' => $order);
-                break;
-            case 'TKT_price':
-                $orderby = array('TKT_price' => $order);
-                break;
-            case 'TKT_uses':
-                $orderby = array('TKT_uses' => $order);
-                break;
-            case 'TKT_min':
-                $orderby = array('TKT_min' => $order);
-                break;
-            case 'TKT_max':
-                $orderby = array('TKT_max' => $order);
-                break;
-            case 'TKT_qty':
-                $orderby = array('TKT_qty' => $order);
-                break;
-        }
-        $current_page = isset($this->_req_data['paged']) && ! empty($this->_req_data['paged'])
-            ? $this->_req_data['paged']
-            : 1;
-        $per_page = isset($this->_req_data['perpage']) && ! empty($this->_req_data['perpage'])
-            ? $this->_req_data['perpage']
-            : $per_page;
-        $_where = array(
-            'TKT_is_default' => 1,
-            'TKT_deleted'    => $trashed,
-        );
-        $offset = ($current_page - 1) * $per_page;
-        $limit = array($offset, $per_page);
-        if (isset($this->_req_data['s'])) {
-            $sstr = '%' . $this->_req_data['s'] . '%';
-            $_where['OR'] = array(
-                'TKT_name'        => array('LIKE', $sstr),
-                'TKT_description' => array('LIKE', $sstr),
-            );
-        }
-        $query_params = array(
-            $_where,
-            'order_by' => $orderby,
-            'limit'    => $limit,
-            'group_by' => 'TKT_ID',
-        );
-        if ($count) {
-            return EEM_Ticket::instance()->count_deleted_and_undeleted(array($_where));
-        } else {
-            return EEM_Ticket::instance()->get_all_deleted_and_undeleted($query_params);
-        }
-    }
-
-
-    /**
-     * @param bool $trash
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected function _trash_or_restore_ticket($trash = false)
-    {
-        $success = 1;
-        $TKT = EEM_Ticket::instance();
-        // checkboxes?
-        if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
-            // if array has more than one element then success message should be plural
-            $success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
-            // cycle thru the boxes
-            foreach ($this->_req_data['checkbox'] as $TKT_ID) {
-                if ($trash) {
-                    if (! $TKT->delete_by_ID($TKT_ID)) {
-                        $success = 0;
-                    }
-                } elseif (! $TKT->restore_by_ID($TKT_ID)) {
-                    $success = 0;
-                }
-            }
-        } else {
-            // grab single id and trash
-            $TKT_ID = absint($this->_req_data['TKT_ID']);
-            if ($trash) {
-                if (! $TKT->delete_by_ID($TKT_ID)) {
-                    $success = 0;
-                }
-            } elseif (! $TKT->restore_by_ID($TKT_ID)) {
-                $success = 0;
-            }
-        }
-        $action_desc = $trash ? 'moved to the trash' : 'restored';
-        $query_args = array(
-            'action' => 'ticket_list_table',
-            'status' => $trash ? '' : 'trashed',
-        );
-        $this->_redirect_after_action($success, 'Tickets', $action_desc, $query_args);
-    }
-
-
-    /**
-     * Handles trashing default ticket.
-     *
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _delete_ticket()
-    {
-        $success = 1;
-        // checkboxes?
-        if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
-            // if array has more than one element then success message should be plural
-            $success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
-            // cycle thru the boxes
-            foreach ($this->_req_data['checkbox'] as $TKT_ID) {
-                // delete
-                if (! $this->_delete_the_ticket($TKT_ID)) {
-                    $success = 0;
-                }
-            }
-        } else {
-            // grab single id and trash
-            $TKT_ID = absint($this->_req_data['TKT_ID']);
-            if (! $this->_delete_the_ticket($TKT_ID)) {
-                $success = 0;
-            }
-        }
-        $action_desc = 'deleted';
-        $query_args = array(
-            'action' => 'ticket_list_table',
-            'status' => 'trashed',
-        );
-        // fail safe.  If the default ticket count === 1 then we need to redirect to event overview.
-        if (EEM_Ticket::instance()->count_deleted_and_undeleted(
-            array(array('TKT_is_default' => 1)),
-            'TKT_ID',
-            true
-        )
-        ) {
-            $query_args = array();
-        }
-        $this->_redirect_after_action($success, 'Tickets', $action_desc, $query_args);
-    }
-
-
-    /**
-     * @param int $TKT_ID
-     * @return bool|int
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    protected function _delete_the_ticket($TKT_ID)
-    {
-        $tkt = EEM_Ticket::instance()->get_one_by_ID($TKT_ID);
-        $tkt->_remove_relations('Datetime');
-        // delete all related prices first
-        $tkt->delete_related_permanently('Price');
-        return $tkt->delete_permanently();
-    }
+	/**
+	 * @var AdvancedEditorAdminFormSection
+	 */
+	protected $advanced_editor_admin_form;
+
+	/**
+	 * @var AdvancedEditorEntityData
+	 */
+	protected $advanced_editor_data;
+
+
+	/**
+	 * Extend_Events_Admin_Page constructor.
+	 *
+	 * @param bool $routing
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function __construct($routing = true)
+	{
+		if (! defined('EVENTS_CAF_TEMPLATE_PATH')) {
+			define('EVENTS_CAF_TEMPLATE_PATH', EE_CORE_CAF_ADMIN_EXTEND . 'events/templates/');
+			define('EVENTS_CAF_ASSETS', EE_CORE_CAF_ADMIN_EXTEND . 'events/assets/');
+			define('EVENTS_CAF_ASSETS_URL', EE_CORE_CAF_ADMIN_EXTEND_URL . 'events/assets/');
+		}
+		parent::__construct($routing);
+	}
+
+
+	/**
+	 * Sets routes.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws Exception
+	 */
+	protected function _extend_page_config()
+	{
+		$this->_admin_base_path = EE_CORE_CAF_ADMIN_EXTEND . 'events';
+		// is there a evt_id in the request?
+		$evt_id = ! empty($this->_req_data['EVT_ID']) && ! is_array($this->_req_data['EVT_ID'])
+			? $this->_req_data['EVT_ID']
+			: 0;
+		$evt_id = ! empty($this->_req_data['post']) ? $this->_req_data['post'] : $evt_id;
+		// tkt_id?
+		$tkt_id = ! empty($this->_req_data['TKT_ID']) && ! is_array($this->_req_data['TKT_ID'])
+			? $this->_req_data['TKT_ID']
+			: 0;
+		$new_page_routes = array(
+			'duplicate_event'          => array(
+				'func'       => '_duplicate_event',
+				'capability' => 'ee_edit_event',
+				'obj_id'     => $evt_id,
+				'noheader'   => true,
+			),
+			'ticket_list_table'        => array(
+				'func'       => '_tickets_overview_list_table',
+				'capability' => 'ee_read_default_tickets',
+			),
+			'trash_ticket'             => array(
+				'func'       => '_trash_or_restore_ticket',
+				'capability' => 'ee_delete_default_ticket',
+				'obj_id'     => $tkt_id,
+				'noheader'   => true,
+				'args'       => array('trash' => true),
+			),
+			'trash_tickets'            => array(
+				'func'       => '_trash_or_restore_ticket',
+				'capability' => 'ee_delete_default_tickets',
+				'noheader'   => true,
+				'args'       => array('trash' => true),
+			),
+			'restore_ticket'           => array(
+				'func'       => '_trash_or_restore_ticket',
+				'capability' => 'ee_delete_default_ticket',
+				'obj_id'     => $tkt_id,
+				'noheader'   => true,
+			),
+			'restore_tickets'          => array(
+				'func'       => '_trash_or_restore_ticket',
+				'capability' => 'ee_delete_default_tickets',
+				'noheader'   => true,
+			),
+			'delete_ticket'            => array(
+				'func'       => '_delete_ticket',
+				'capability' => 'ee_delete_default_ticket',
+				'obj_id'     => $tkt_id,
+				'noheader'   => true,
+			),
+			'delete_tickets'           => array(
+				'func'       => '_delete_ticket',
+				'capability' => 'ee_delete_default_tickets',
+				'noheader'   => true,
+			),
+			'import_page'              => array(
+				'func'       => '_import_page',
+				'capability' => 'import',
+			),
+			'import'                   => array(
+				'func'       => '_import_events',
+				'capability' => 'import',
+				'noheader'   => true,
+			),
+			'import_events'            => array(
+				'func'       => '_import_events',
+				'capability' => 'import',
+				'noheader'   => true,
+			),
+			'export_events'            => array(
+				'func'       => '_events_export',
+				'capability' => 'export',
+				'noheader'   => true,
+			),
+			'export_categories'        => array(
+				'func'       => '_categories_export',
+				'capability' => 'export',
+				'noheader'   => true,
+			),
+			'sample_export_file'       => array(
+				'func'       => '_sample_export_file',
+				'capability' => 'export',
+				'noheader'   => true,
+			),
+			'update_template_settings' => array(
+				'func'       => '_update_template_settings',
+				'capability' => 'manage_options',
+				'noheader'   => true,
+			),
+		);
+		$this->_page_routes = array_merge($this->_page_routes, $new_page_routes);
+		// partial route/config override
+		$this->_page_config['import_events']['metaboxes'] = $this->_default_espresso_metaboxes;
+		$this->_page_config['create_new']['metaboxes'][] = '_premium_event_editor_meta_boxes';
+		$this->_page_config['create_new']['qtips'][] = 'EE_Event_Editor_Tips';
+		$this->_page_config['edit']['qtips'][] = 'EE_Event_Editor_Tips';
+		$this->_page_config['edit']['metaboxes'][] = '_premium_event_editor_meta_boxes';
+		$this->_page_config['default']['list_table'] = 'Extend_Events_Admin_List_Table';
+		// add tickets tab but only if there are more than one default ticket!
+		$tkt_count = EEM_Ticket::instance()->count_deleted_and_undeleted(
+			array(array('TKT_is_default' => 1)),
+			'TKT_ID',
+			true
+		);
+		if ($tkt_count > 1) {
+			$new_page_config = array(
+				'ticket_list_table' => array(
+					'nav'           => array(
+						'label' => esc_html__('Default Tickets', 'event_espresso'),
+						'order' => 60,
+					),
+					'list_table'    => 'Tickets_List_Table',
+					'require_nonce' => false,
+				),
+			);
+		}
+		// template settings
+		$new_page_config['template_settings'] = array(
+			'nav'           => array(
+				'label' => esc_html__('Templates', 'event_espresso'),
+				'order' => 30,
+			),
+			'metaboxes'     => array_merge($this->_default_espresso_metaboxes, array('_publish_post_box')),
+			'help_tabs'     => array(
+				'general_settings_templates_help_tab' => array(
+					'title'    => esc_html__('Templates', 'event_espresso'),
+					'filename' => 'general_settings_templates',
+				),
+			),
+			'help_tour'     => array('Templates_Help_Tour'),
+			'require_nonce' => false,
+		);
+		$this->_page_config = array_merge($this->_page_config, $new_page_config);
+		// add filters and actions
+		// modifying _views
+		add_filter(
+			'FHEE_event_datetime_metabox_add_additional_date_time_template',
+			array($this, 'add_additional_datetime_button'),
+			10,
+			2
+		);
+		add_filter(
+			'FHEE_event_datetime_metabox_clone_button_template',
+			array($this, 'add_datetime_clone_button'),
+			10,
+			2
+		);
+		add_filter(
+			'FHEE_event_datetime_metabox_timezones_template',
+			array($this, 'datetime_timezones_template'),
+			10,
+			2
+		);
+		// filters for event list table
+		add_filter('FHEE__Extend_Events_Admin_List_Table__filters', array($this, 'list_table_filters'), 10, 2);
+		add_filter(
+			'FHEE__Events_Admin_List_Table__column_actions__action_links',
+			array($this, 'extra_list_table_actions'),
+			10,
+			2
+		);
+		// legend item
+		add_filter('FHEE__Events_Admin_Page___event_legend_items__items', array($this, 'additional_legend_items'));
+		add_action('admin_init', array($this, 'admin_init'));
+	   // load additional handlers
+		$this->handleActionRequest();
+	}
+
+
+	private function getRequestAction()
+	{
+		return isset($this->_req_data['action']) ? sanitize_key($this->_req_data['action']) : null;
+	}
+
+
+	/**
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws Exception
+	 */
+	private function handleActionRequest()
+	{
+		$action = $this->getRequestAction();
+		if ($action) {
+			// setup Advanced Editor ???
+			if ($action === 'default_event_settings' || $action === 'update_default_event_settings') {
+				$this->advanced_editor_admin_form = $this->loader->getShared(
+					'EventEspresso\core\domain\services\admin\events\default_settings\AdvancedEditorAdminFormSection'
+				);
+			}
+			$admin_config = $this->loader->getShared('EE_Admin_Config');
+			// load handler for GraphQL requests and AdvancedEditorEntityData
+			if (($action === 'edit' || $action === 'create_new')
+				&& $admin_config instanceof EE_Admin_Config
+				&& class_exists('WPGraphQL')
+				&& $admin_config->useAdvancedEditor()
+			) {
+				try {
+					/** @var EventEspresso\core\services\graphql\GraphQLManager $graphQL_manager */
+					$graphQL_manager = $this->loader->getShared(
+						'EventEspresso\core\services\graphql\GraphQLManager'
+					);
+					$graphQL_manager->init();
+					$this->advanced_editor_data = $this->loader->getShared(
+						'EventEspresso\core\domain\services\admin\events\editor\AdvancedEditorEntityData',
+						[$this->_cpt_model_obj]
+					);
+				} catch (Exception $exception) {
+					new ExceptionStackTraceDisplay($exception);
+				}
+			}
+		}
+	}
+
+
+	/**
+	 * admin_init
+	 */
+	public function admin_init()
+	{
+		EE_Registry::$i18n_js_strings = array_merge(
+			EE_Registry::$i18n_js_strings,
+			array(
+				'image_confirm'          => esc_html__(
+					'Do you really want to delete this image? Please remember to update your event to complete the removal.',
+					'event_espresso'
+				),
+				'event_starts_on'        => esc_html__('Event Starts on', 'event_espresso'),
+				'event_ends_on'          => esc_html__('Event Ends on', 'event_espresso'),
+				'event_datetime_actions' => esc_html__('Actions', 'event_espresso'),
+				'event_clone_dt_msg'     => esc_html__('Clone this Event Date and Time', 'event_espresso'),
+				'remove_event_dt_msg'    => esc_html__('Remove this Event Time', 'event_espresso'),
+			)
+		);
+	}
+
+
+	/**
+	 * Add per page screen options to the default ticket list table view.
+	 *
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _add_screen_options_ticket_list_table()
+	{
+		$this->_per_page_screen_option();
+	}
+
+
+	/**
+	 * @param string $return
+	 * @param int    $id
+	 * @param string $new_title
+	 * @param string $new_slug
+	 * @return string
+	 */
+	public function extra_permalink_field_buttons($return, $id, $new_title, $new_slug)
+	{
+		$return = parent::extra_permalink_field_buttons($return, $id, $new_title, $new_slug);
+		// make sure this is only when editing
+		if (! empty($id)) {
+			$href = EE_Admin_Page::add_query_args_and_nonce(
+				array('action' => 'duplicate_event', 'EVT_ID' => $id),
+				$this->_admin_base_url
+			);
+			$title = esc_attr__('Duplicate Event', 'event_espresso');
+			$return .= '<a href="'
+					   . $href
+					   . '" title="'
+					   . $title
+					   . '" id="ee-duplicate-event-button" class="button button-small"  value="duplicate_event">'
+					   . $title
+					   . '</a>';
+		}
+		return $return;
+	}
+
+
+	/**
+	 * Set the list table views for the default ticket list table view.
+	 */
+	public function _set_list_table_views_ticket_list_table()
+	{
+		$this->_views = array(
+			'all'     => array(
+				'slug'        => 'all',
+				'label'       => esc_html__('All', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'trash_tickets' => esc_html__('Move to Trash', 'event_espresso'),
+				),
+			),
+			'trashed' => array(
+				'slug'        => 'trashed',
+				'label'       => esc_html__('Trash', 'event_espresso'),
+				'count'       => 0,
+				'bulk_action' => array(
+					'restore_tickets' => esc_html__('Restore from Trash', 'event_espresso'),
+					'delete_tickets'  => esc_html__('Delete Permanently', 'event_espresso'),
+				),
+			),
+		);
+	}
+
+
+	/**
+	 * Enqueue scripts and styles for the event editor.
+	 */
+	public function load_scripts_styles_edit()
+	{
+		wp_register_script(
+			'ee-event-editor-heartbeat',
+			EVENTS_CAF_ASSETS_URL . 'event-editor-heartbeat.js',
+			array('ee_admin_js', 'heartbeat'),
+			EVENT_ESPRESSO_VERSION,
+			true
+		);
+		wp_enqueue_script('ee-accounting');
+		// styles
+		wp_enqueue_style('espresso-ui-theme');
+		wp_enqueue_script('event_editor_js');
+		wp_enqueue_script('ee-event-editor-heartbeat');
+	}
+
+
+	/**
+	 * Returns template for the additional datetime.
+	 *
+	 * @param $template
+	 * @param $template_args
+	 * @return mixed
+	 * @throws DomainException
+	 */
+	public function add_additional_datetime_button($template, $template_args)
+	{
+		return EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_add_additional_time.template.php',
+			$template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * Returns the template for cloning a datetime.
+	 *
+	 * @param $template
+	 * @param $template_args
+	 * @return mixed
+	 * @throws DomainException
+	 */
+	public function add_datetime_clone_button($template, $template_args)
+	{
+		return EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_metabox_clone_button.template.php',
+			$template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * Returns the template for datetime timezones.
+	 *
+	 * @param $template
+	 * @param $template_args
+	 * @return mixed
+	 * @throws DomainException
+	 */
+	public function datetime_timezones_template($template, $template_args)
+	{
+		return EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'event_datetime_timezones.template.php',
+			$template_args,
+			true
+		);
+	}
+
+
+	/**
+	 * Sets the views for the default list table view.
+	 */
+	protected function _set_list_table_views_default()
+	{
+		parent::_set_list_table_views_default();
+		$new_views = array(
+			'today' => array(
+				'slug'        => 'today',
+				'label'       => esc_html__('Today', 'event_espresso'),
+				'count'       => $this->total_events_today(),
+				'bulk_action' => array(
+					'trash_events' => esc_html__('Move to Trash', 'event_espresso'),
+				),
+			),
+			'month' => array(
+				'slug'        => 'month',
+				'label'       => esc_html__('This Month', 'event_espresso'),
+				'count'       => $this->total_events_this_month(),
+				'bulk_action' => array(
+					'trash_events' => esc_html__('Move to Trash', 'event_espresso'),
+				),
+			),
+		);
+		$this->_views = array_merge($this->_views, $new_views);
+	}
+
+
+	/**
+	 * Returns the extra action links for the default list table view.
+	 *
+	 * @param array    $action_links
+	 * @param EE_Event $event
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function extra_list_table_actions(array $action_links, EE_Event $event)
+	{
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_read_registrations',
+			'espresso_registrations_reports',
+			$event->ID()
+		)
+		) {
+			$reports_query_args = array(
+				'action' => 'reports',
+				'EVT_ID' => $event->ID(),
+			);
+			$reports_link = EE_Admin_Page::add_query_args_and_nonce($reports_query_args, REG_ADMIN_URL);
+			$action_links[] = '<a href="'
+							  . $reports_link
+							  . '" title="'
+							  . esc_attr__('View Report', 'event_espresso')
+							  . '"><div class="dashicons dashicons-chart-bar"></div></a>'
+							  . "\n\t";
+		}
+		if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
+			EE_Registry::instance()->load_helper('MSG_Template');
+			$action_links[] = EEH_MSG_Template::get_message_action_link(
+				'see_notifications_for',
+				null,
+				array('EVT_ID' => $event->ID())
+			);
+		}
+		return $action_links;
+	}
+
+
+	/**
+	 * @param $items
+	 * @return mixed
+	 */
+	public function additional_legend_items($items)
+	{
+		if (EE_Registry::instance()->CAP->current_user_can(
+			'ee_read_registrations',
+			'espresso_registrations_reports'
+		)
+		) {
+			$items['reports'] = array(
+				'class' => 'dashicons dashicons-chart-bar',
+				'desc'  => esc_html__('Event Reports', 'event_espresso'),
+			);
+		}
+		if (EE_Registry::instance()->CAP->current_user_can('ee_read_global_messages', 'view_filtered_messages')) {
+			$related_for_icon = EEH_MSG_Template::get_message_action_icon('see_notifications_for');
+			// $related_for_icon can sometimes be a string so 'css_class' would be an illegal offset
+			// (can only use numeric offsets when treating strings as arrays)
+			if (is_array($related_for_icon) && isset($related_for_icon['css_class'], $related_for_icon['label'])) {
+				$items['view_related_messages'] = array(
+					'class' => $related_for_icon['css_class'],
+					'desc'  => $related_for_icon['label'],
+				);
+			}
+		}
+		return $items;
+	}
+
+
+	/**
+	 * This is the callback method for the duplicate event route
+	 * Method looks for 'EVT_ID' in the request and retrieves that event and its details and duplicates them
+	 * into a new event.  We add a hook so that any plugins that add extra event details can hook into this
+	 * action.  Note that the dupe will have **DUPLICATE** as its title and slug.
+	 * After duplication the redirect is to the new event edit page.
+	 *
+	 * @return void
+	 * @throws EE_Error If EE_Event is not available with given ID
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @access protected
+	 */
+	protected function _duplicate_event()
+	{
+		// first make sure the ID for the event is in the request.
+		//  If it isn't then we need to bail and redirect back to overview list table (cause how did we get here?)
+		if (! isset($this->_req_data['EVT_ID'])) {
+			EE_Error::add_error(
+				esc_html__(
+					'In order to duplicate an event an Event ID is required.  None was given.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			$this->_redirect_after_action(false, '', '', array(), true);
+			return;
+		}
+		// k we've got EVT_ID so let's use that to get the event we'll duplicate
+		$orig_event = EEM_Event::instance()->get_one_by_ID($this->_req_data['EVT_ID']);
+		if (! $orig_event instanceof EE_Event) {
+			throw new EE_Error(
+				sprintf(
+					esc_html__('An EE_Event object could not be retrieved for the given ID (%s)', 'event_espresso'),
+					$this->_req_data['EVT_ID']
+				)
+			);
+		}
+		// k now let's clone the $orig_event before getting relations
+		$new_event = clone $orig_event;
+		// original datetimes
+		$orig_datetimes = $orig_event->get_many_related('Datetime');
+		// other original relations
+		$orig_ven = $orig_event->get_many_related('Venue');
+		// reset the ID and modify other details to make it clear this is a dupe
+		$new_event->set('EVT_ID', 0);
+		$new_name = $new_event->name() . ' ' . esc_html__('**DUPLICATE**', 'event_espresso');
+		$new_event->set('EVT_name', $new_name);
+		$new_event->set(
+			'EVT_slug',
+			wp_unique_post_slug(
+				sanitize_title($orig_event->name()),
+				0,
+				'publish',
+				'espresso_events',
+				0
+			)
+		);
+		$new_event->set('status', 'draft');
+		// duplicate discussion settings
+		$new_event->set('comment_status', $orig_event->get('comment_status'));
+		$new_event->set('ping_status', $orig_event->get('ping_status'));
+		// save the new event
+		$new_event->save();
+		// venues
+		foreach ($orig_ven as $ven) {
+			$new_event->_add_relation_to($ven, 'Venue');
+		}
+		$new_event->save();
+		// now we need to get the question group relations and handle that
+		// first primary question groups
+		$orig_primary_qgs = $orig_event->get_many_related(
+			'Question_Group',
+			[['Event_Question_Group.EQG_primary' => true]]
+		);
+		if (! empty($orig_primary_qgs)) {
+			foreach ($orig_primary_qgs as $id => $obj) {
+				if ($obj instanceof EE_Question_Group) {
+					$new_event->_add_relation_to($obj, 'Question_Group', ['EQG_primary' => true]);
+				}
+			}
+		}
+		// next additional attendee question groups
+		$orig_additional_qgs = $orig_event->get_many_related(
+			'Question_Group',
+			[['Event_Question_Group.EQG_additional' => true]]
+		);
+		if (! empty($orig_additional_qgs)) {
+			foreach ($orig_additional_qgs as $id => $obj) {
+				if ($obj instanceof EE_Question_Group) {
+					$new_event->_add_relation_to($obj, 'Question_Group', ['EQG_additional' => true]);
+				}
+			}
+		}
+
+		$new_event->save();
+
+		// k now that we have the new event saved we can loop through the datetimes and start adding relations.
+		$cloned_tickets = array();
+		foreach ($orig_datetimes as $orig_dtt) {
+			if (! $orig_dtt instanceof EE_Datetime) {
+				continue;
+			}
+			$new_dtt = clone $orig_dtt;
+			$orig_tkts = $orig_dtt->tickets();
+			// save new dtt then add to event
+			$new_dtt->set('DTT_ID', 0);
+			$new_dtt->set('DTT_sold', 0);
+			$new_dtt->set_reserved(0);
+			$new_dtt->save();
+			$new_event->_add_relation_to($new_dtt, 'Datetime');
+			$new_event->save();
+			// now let's get the ticket relations setup.
+			foreach ((array) $orig_tkts as $orig_tkt) {
+				// it's possible a datetime will have no tickets so let's verify we HAVE a ticket first.
+				if (! $orig_tkt instanceof EE_Ticket) {
+					continue;
+				}
+				// is this ticket archived?  If it is then let's skip
+				if ($orig_tkt->get('TKT_deleted')) {
+					continue;
+				}
+				// does this original ticket already exist in the clone_tickets cache?
+				//  If so we'll just use the new ticket from it.
+				if (isset($cloned_tickets[ $orig_tkt->ID() ])) {
+					$new_tkt = $cloned_tickets[ $orig_tkt->ID() ];
+				} else {
+					$new_tkt = clone $orig_tkt;
+					// get relations on the $orig_tkt that we need to setup.
+					$orig_prices = $orig_tkt->prices();
+					$new_tkt->set('TKT_ID', 0);
+					$new_tkt->set('TKT_sold', 0);
+					$new_tkt->set('TKT_reserved', 0);
+					$new_tkt->save(); // make sure new ticket has ID.
+					// price relations on new ticket need to be setup.
+					foreach ($orig_prices as $orig_price) {
+						$new_price = clone $orig_price;
+						$new_price->set('PRC_ID', 0);
+						$new_price->save();
+						$new_tkt->_add_relation_to($new_price, 'Price');
+						$new_tkt->save();
+					}
+
+					do_action(
+						'AHEE__Extend_Events_Admin_Page___duplicate_event__duplicate_ticket__after',
+						$orig_tkt,
+						$new_tkt,
+						$orig_prices,
+						$orig_event,
+						$orig_dtt,
+						$new_dtt
+					);
+				}
+				// k now we can add the new ticket as a relation to the new datetime
+				// and make sure its added to our cached $cloned_tickets array
+				// for use with later datetimes that have the same ticket.
+				$new_dtt->_add_relation_to($new_tkt, 'Ticket');
+				$new_dtt->save();
+				$cloned_tickets[ $orig_tkt->ID() ] = $new_tkt;
+			}
+		}
+		// clone taxonomy information
+		$taxonomies_to_clone_with = apply_filters(
+			'FHEE__Extend_Events_Admin_Page___duplicate_event__taxonomies_to_clone',
+			array('espresso_event_categories', 'espresso_event_type', 'post_tag')
+		);
+		// get terms for original event (notice)
+		$orig_terms = wp_get_object_terms($orig_event->ID(), $taxonomies_to_clone_with);
+		// loop through terms and add them to new event.
+		foreach ($orig_terms as $term) {
+			wp_set_object_terms($new_event->ID(), $term->term_id, $term->taxonomy, true);
+		}
+
+		// duplicate other core WP_Post items for this event.
+		// post thumbnail (feature image).
+		$feature_image_id = get_post_thumbnail_id($orig_event->ID());
+		if ($feature_image_id) {
+			update_post_meta($new_event->ID(), '_thumbnail_id', $feature_image_id);
+		}
+
+		// duplicate page_template setting
+		$page_template = get_post_meta($orig_event->ID(), '_wp_page_template', true);
+		if ($page_template) {
+			update_post_meta($new_event->ID(), '_wp_page_template', $page_template);
+		}
+
+		do_action('AHEE__Extend_Events_Admin_Page___duplicate_event__after', $new_event, $orig_event);
+		// now let's redirect to the edit page for this duplicated event if we have a new event id.
+		if ($new_event->ID()) {
+			$redirect_args = array(
+				'post'   => $new_event->ID(),
+				'action' => 'edit',
+			);
+			EE_Error::add_success(
+				esc_html__(
+					'Event successfully duplicated.  Please review the details below and make any necessary edits',
+					'event_espresso'
+				)
+			);
+		} else {
+			$redirect_args = array(
+				'action' => 'default',
+			);
+			EE_Error::add_error(
+				esc_html__('Not able to duplicate event.  Something went wrong.', 'event_espresso'),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		$this->_redirect_after_action(false, '', '', $redirect_args, true);
+	}
+
+
+	/**
+	 * Generates output for the import page.
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _import_page()
+	{
+		$title = esc_html__('Import', 'event_espresso');
+		$intro = esc_html__(
+			'If you have a previously exported Event Espresso 4 information in a Comma Separated Value (CSV) file format, you can upload the file here: ',
+			'event_espresso'
+		);
+		$form_url = EVENTS_ADMIN_URL;
+		$action = 'import_events';
+		$type = 'csv';
+		$this->_template_args['form'] = EE_Import::instance()->upload_form(
+			$title,
+			$intro,
+			$form_url,
+			$action,
+			$type
+		);
+		$this->_template_args['sample_file_link'] = EE_Admin_Page::add_query_args_and_nonce(
+			array('action' => 'sample_export_file'),
+			$this->_admin_base_url
+		);
+		$content = EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'import_page.template.php',
+			$this->_template_args,
+			true
+		);
+		$this->_template_args['admin_page_content'] = $content;
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	/**
+	 * _import_events
+	 * This handles displaying the screen and running imports for importing events.
+	 *
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _import_events()
+	{
+		require_once(EE_CLASSES . 'EE_Import.class.php');
+		$success = EE_Import::instance()->import();
+		$this->_redirect_after_action($success, 'Import File', 'ran', array('action' => 'import_page'), true);
+	}
+
+
+	/**
+	 * _events_export
+	 * Will export all (or just the given event) to a Excel compatible file.
+	 *
+	 * @access protected
+	 * @return void
+	 */
+	protected function _events_export()
+	{
+		if (isset($this->_req_data['EVT_ID'])) {
+			$event_ids = $this->_req_data['EVT_ID'];
+		} elseif (isset($this->_req_data['EVT_IDs'])) {
+			$event_ids = $this->_req_data['EVT_IDs'];
+		} else {
+			$event_ids = null;
+		}
+		// todo: I don't like doing this but it'll do until we modify EE_Export Class.
+		$new_request_args = array(
+			'export' => 'report',
+			'action' => 'all_event_data',
+			'EVT_ID' => $event_ids,
+		);
+		$this->_req_data = array_merge($this->_req_data, $new_request_args);
+		if (is_readable(EE_CLASSES . 'EE_Export.class.php')) {
+			require_once(EE_CLASSES . 'EE_Export.class.php');
+			$EE_Export = EE_Export::instance($this->_req_data);
+			$EE_Export->export();
+		}
+	}
+
+
+	/**
+	 * handle category exports()
+	 *
+	 * @return void
+	 */
+	protected function _categories_export()
+	{
+		// todo: I don't like doing this but it'll do until we modify EE_Export Class.
+		$new_request_args = array(
+			'export'       => 'report',
+			'action'       => 'categories',
+			'category_ids' => $this->_req_data['EVT_CAT_ID'],
+		);
+		$this->_req_data = array_merge($this->_req_data, $new_request_args);
+		if (is_readable(EE_CLASSES . 'EE_Export.class.php')) {
+			require_once(EE_CLASSES . 'EE_Export.class.php');
+			$EE_Export = EE_Export::instance($this->_req_data);
+			$EE_Export->export();
+		}
+	}
+
+
+	/**
+	 * Creates a sample CSV file for importing
+	 */
+	protected function _sample_export_file()
+	{
+		// require_once(EE_CLASSES . 'EE_Export.class.php');
+		EE_Export::instance()->export_sample();
+	}
+
+
+	/*************        Template Settings        *************/
+	/**
+	 * Generates template settings page output
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _template_settings()
+	{
+		$this->_template_args['values'] = $this->_yes_no_values;
+		/**
+		 * Note leaving this filter in for backward compatibility this was moved in 4.6.x
+		 * from General_Settings_Admin_Page to here.
+		 */
+		$this->_template_args = apply_filters(
+			'FHEE__General_Settings_Admin_Page__template_settings__template_args',
+			$this->_template_args
+		);
+		$this->_set_add_edit_form_tags('update_template_settings');
+		$this->_set_publish_post_box_vars(null, false, false, null, false);
+		$this->_template_args['admin_page_content'] = EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'template_settings.template.php',
+			$this->_template_args,
+			true
+		);
+		$this->display_admin_page_with_sidebar();
+	}
+
+
+	/**
+	 * Handler for updating template settings.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _update_template_settings()
+	{
+		/**
+		 * Note leaving this filter in for backward compatibility this was moved in 4.6.x
+		 * from General_Settings_Admin_Page to here.
+		 */
+		EE_Registry::instance()->CFG->template_settings = apply_filters(
+			'FHEE__General_Settings_Admin_Page__update_template_settings__data',
+			EE_Registry::instance()->CFG->template_settings,
+			$this->_req_data
+		);
+		// update custom post type slugs and detect if we need to flush rewrite rules
+		$old_slug = EE_Registry::instance()->CFG->core->event_cpt_slug;
+		EE_Registry::instance()->CFG->core->event_cpt_slug = empty($this->_req_data['event_cpt_slug'])
+			? EE_Registry::instance()->CFG->core->event_cpt_slug
+			: EEH_URL::slugify($this->_req_data['event_cpt_slug'], 'events');
+		$what = 'Template Settings';
+		$success = $this->_update_espresso_configuration(
+			$what,
+			EE_Registry::instance()->CFG->template_settings,
+			__FILE__,
+			__FUNCTION__,
+			__LINE__
+		);
+		if (EE_Registry::instance()->CFG->core->event_cpt_slug !== $old_slug) {
+			/** @var EventEspresso\core\domain\services\custom_post_types\RewriteRules $rewrite_rules */
+			$rewrite_rules = LoaderFactory::getLoader()->getShared(
+				'EventEspresso\core\domain\services\custom_post_types\RewriteRules'
+			);
+			$rewrite_rules->flush();
+		}
+		$this->_redirect_after_action($success, $what, 'updated', array('action' => 'template_settings'));
+	}
+
+
+	/**
+	 * _premium_event_editor_meta_boxes
+	 * add all metaboxes related to the event_editor
+	 *
+	 * @access protected
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _premium_event_editor_meta_boxes()
+	{
+		$this->verify_cpt_object();
+		add_meta_box(
+			'espresso_event_editor_event_options',
+			esc_html__('Event Registration Options', 'event_espresso'),
+			array($this, 'registration_options_meta_box'),
+			$this->page_slug,
+			'side',
+			'core'
+		);
+	}
+
+
+	/**
+	 * override caf metabox
+	 *
+	 * @return void
+	 * @throws DomainException
+	 * @throws EE_Error
+	 */
+	public function registration_options_meta_box()
+	{
+		$yes_no_values = array(
+			array('id' => true, 'text' => esc_html__('Yes', 'event_espresso')),
+			array('id' => false, 'text' => esc_html__('No', 'event_espresso')),
+		);
+		$default_reg_status_values = EEM_Registration::reg_status_array(
+			array(
+				EEM_Registration::status_id_cancelled,
+				EEM_Registration::status_id_declined,
+				EEM_Registration::status_id_incomplete,
+				EEM_Registration::status_id_wait_list,
+			),
+			true
+		);
+		$template_args['active_status'] = $this->_cpt_model_obj->pretty_active_status(false);
+		$template_args['_event'] = $this->_cpt_model_obj;
+		$template_args['additional_limit'] = $this->_cpt_model_obj->additional_limit();
+		$template_args['default_registration_status'] = EEH_Form_Fields::select_input(
+			'default_reg_status',
+			$default_reg_status_values,
+			$this->_cpt_model_obj->default_registration_status()
+		);
+		$template_args['display_description'] = EEH_Form_Fields::select_input(
+			'display_desc',
+			$yes_no_values,
+			$this->_cpt_model_obj->display_description()
+		);
+		$template_args['display_ticket_selector'] = EEH_Form_Fields::select_input(
+			'display_ticket_selector',
+			$yes_no_values,
+			$this->_cpt_model_obj->display_ticket_selector(),
+			'',
+			'',
+			false
+		);
+		$template_args['EVT_default_registration_status'] = EEH_Form_Fields::select_input(
+			'EVT_default_registration_status',
+			$default_reg_status_values,
+			$this->_cpt_model_obj->default_registration_status()
+		);
+		$template_args['additional_registration_options'] = apply_filters(
+			'FHEE__Events_Admin_Page__registration_options_meta_box__additional_registration_options',
+			'',
+			$template_args,
+			$yes_no_values,
+			$default_reg_status_values
+		);
+		EEH_Template::display_template(
+			EVENTS_CAF_TEMPLATE_PATH . 'event_registration_options.template.php',
+			$template_args
+		);
+	}
+
+
+
+	/**
+	 * wp_list_table_mods for caf
+	 * ============================
+	 */
+	/**
+	 * hook into list table filters and provide filters for caffeinated list table
+	 *
+	 * @param array $old_filters    any existing filters present
+	 * @param array $list_table_obj the list table object
+	 * @return array                  new filters
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public function list_table_filters($old_filters, $list_table_obj)
+	{
+		$filters = array();
+		// first month/year filters
+		$filters[] = $this->espresso_event_months_dropdown();
+		$status = isset($this->_req_data['status']) ? $this->_req_data['status'] : null;
+		// active status dropdown
+		if ($status !== 'draft') {
+			$filters[] = $this->active_status_dropdown(
+				isset($this->_req_data['active_status']) ? $this->_req_data['active_status'] : ''
+			);
+			$filters[] = $this->venuesDropdown(
+				isset($this->_req_data['venue']) ? $this->_req_data['venue'] : ''
+			);
+		}
+		// category filter
+		$filters[] = $this->category_dropdown();
+		return array_merge($old_filters, $filters);
+	}
+
+
+	/**
+	 * espresso_event_months_dropdown
+	 *
+	 * @access public
+	 * @return string                dropdown listing month/year selections for events.
+	 */
+	public function espresso_event_months_dropdown()
+	{
+		// what we need to do is get all PRIMARY datetimes for all events to filter on.
+		// Note we need to include any other filters that are set!
+		$status = isset($this->_req_data['status']) ? $this->_req_data['status'] : null;
+		// categories?
+		$category = isset($this->_req_data['EVT_CAT']) && $this->_req_data['EVT_CAT'] > 0
+			? $this->_req_data['EVT_CAT']
+			: null;
+		// active status?
+		$active_status = isset($this->_req_data['active_status']) ? $this->_req_data['active_status'] : null;
+		$cur_date = isset($this->_req_data['month_range']) ? $this->_req_data['month_range'] : '';
+		return EEH_Form_Fields::generate_event_months_dropdown($cur_date, $status, $category, $active_status);
+	}
+
+
+	/**
+	 * returns a list of "active" statuses on the event
+	 *
+	 * @param  string $current_value whatever the current active status is
+	 * @return string
+	 */
+	public function active_status_dropdown($current_value = '')
+	{
+		$select_name = 'active_status';
+		$values = array(
+			'none'     => esc_html__('Show Active/Inactive', 'event_espresso'),
+			'active'   => esc_html__('Active', 'event_espresso'),
+			'upcoming' => esc_html__('Upcoming', 'event_espresso'),
+			'expired'  => esc_html__('Expired', 'event_espresso'),
+			'inactive' => esc_html__('Inactive', 'event_espresso'),
+		);
+
+		return EEH_Form_Fields::select_input($select_name, $values, $current_value, '', 'wide');
+	}
+
+
+	/**
+	 * returns a list of "venues"
+	 *
+	 * @param string $current_value whatever the current active status is
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function venuesDropdown($current_value = '')
+	{
+		$select_name = 'venue';
+		$values = array(
+			'' => esc_html__('All Venues', 'event_espresso'),
+		);
+		// populate the list of venues.
+		$venue_model = EE_Registry::instance()->load_model('Venue');
+		$venues = $venue_model->get_all(array('order_by' => array('VNU_name' => 'ASC')));
+
+		foreach ($venues as $venue) {
+			$values[ $venue->ID() ] = $venue->name();
+		}
+
+		return EEH_Form_Fields::select_input($select_name, $values, $current_value, '', 'wide');
+	}
+
+
+	/**
+	 * output a dropdown of the categories for the category filter on the event admin list table
+	 *
+	 * @access  public
+	 * @return string html
+	 */
+	public function category_dropdown()
+	{
+		$cur_cat = isset($this->_req_data['EVT_CAT']) ? $this->_req_data['EVT_CAT'] : -1;
+		return EEH_Form_Fields::generate_event_category_dropdown($cur_cat);
+	}
+
+
+	/**
+	 * get total number of events today
+	 *
+	 * @access public
+	 * @return int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function total_events_today()
+	{
+		$start = EEM_Datetime::instance()->convert_datetime_for_query(
+			'DTT_EVT_start',
+			date('Y-m-d') . ' 00:00:00',
+			'Y-m-d H:i:s',
+			'UTC'
+		);
+		$end = EEM_Datetime::instance()->convert_datetime_for_query(
+			'DTT_EVT_start',
+			date('Y-m-d') . ' 23:59:59',
+			'Y-m-d H:i:s',
+			'UTC'
+		);
+		$where = array(
+			'Datetime.DTT_EVT_start' => array('BETWEEN', array($start, $end)),
+		);
+		$count = EEM_Event::instance()->count(array($where, 'caps' => 'read_admin'), 'EVT_ID', true);
+		return $count;
+	}
+
+
+	/**
+	 * get total number of events this month
+	 *
+	 * @access public
+	 * @return int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function total_events_this_month()
+	{
+		// Dates
+		$this_year_r = date('Y');
+		$this_month_r = date('m');
+		$days_this_month = date('t');
+		$start = EEM_Datetime::instance()->convert_datetime_for_query(
+			'DTT_EVT_start',
+			$this_year_r . '-' . $this_month_r . '-01 00:00:00',
+			'Y-m-d H:i:s',
+			'UTC'
+		);
+		$end = EEM_Datetime::instance()->convert_datetime_for_query(
+			'DTT_EVT_start',
+			$this_year_r . '-' . $this_month_r . '-' . $days_this_month . ' 23:59:59',
+			'Y-m-d H:i:s',
+			'UTC'
+		);
+		$where = array(
+			'Datetime.DTT_EVT_start' => array('BETWEEN', array($start, $end)),
+		);
+		$count = EEM_Event::instance()->count(array($where, 'caps' => 'read_admin'), 'EVT_ID', true);
+		return $count;
+	}
+
+
+	/** DEFAULT TICKETS STUFF **/
+
+	/**
+	 * Output default tickets list table view.
+	 *
+	 * @throws DomainException
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function _tickets_overview_list_table()
+	{
+		$this->_search_btn_label = esc_html__('Tickets', 'event_espresso');
+		$this->display_admin_list_table_page_with_no_sidebar();
+	}
+
+
+	/**
+	 * @param int  $per_page
+	 * @param bool $count
+	 * @param bool $trashed
+	 * @return EE_Soft_Delete_Base_Class[]|int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function get_default_tickets($per_page = 10, $count = false, $trashed = false)
+	{
+		$orderby = empty($this->_req_data['orderby']) ? 'TKT_name' : $this->_req_data['orderby'];
+		$order = empty($this->_req_data['order']) ? 'ASC' : $this->_req_data['order'];
+		switch ($orderby) {
+			case 'TKT_name':
+				$orderby = array('TKT_name' => $order);
+				break;
+			case 'TKT_price':
+				$orderby = array('TKT_price' => $order);
+				break;
+			case 'TKT_uses':
+				$orderby = array('TKT_uses' => $order);
+				break;
+			case 'TKT_min':
+				$orderby = array('TKT_min' => $order);
+				break;
+			case 'TKT_max':
+				$orderby = array('TKT_max' => $order);
+				break;
+			case 'TKT_qty':
+				$orderby = array('TKT_qty' => $order);
+				break;
+		}
+		$current_page = isset($this->_req_data['paged']) && ! empty($this->_req_data['paged'])
+			? $this->_req_data['paged']
+			: 1;
+		$per_page = isset($this->_req_data['perpage']) && ! empty($this->_req_data['perpage'])
+			? $this->_req_data['perpage']
+			: $per_page;
+		$_where = array(
+			'TKT_is_default' => 1,
+			'TKT_deleted'    => $trashed,
+		);
+		$offset = ($current_page - 1) * $per_page;
+		$limit = array($offset, $per_page);
+		if (isset($this->_req_data['s'])) {
+			$sstr = '%' . $this->_req_data['s'] . '%';
+			$_where['OR'] = array(
+				'TKT_name'        => array('LIKE', $sstr),
+				'TKT_description' => array('LIKE', $sstr),
+			);
+		}
+		$query_params = array(
+			$_where,
+			'order_by' => $orderby,
+			'limit'    => $limit,
+			'group_by' => 'TKT_ID',
+		);
+		if ($count) {
+			return EEM_Ticket::instance()->count_deleted_and_undeleted(array($_where));
+		} else {
+			return EEM_Ticket::instance()->get_all_deleted_and_undeleted($query_params);
+		}
+	}
+
+
+	/**
+	 * @param bool $trash
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected function _trash_or_restore_ticket($trash = false)
+	{
+		$success = 1;
+		$TKT = EEM_Ticket::instance();
+		// checkboxes?
+		if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
+			// if array has more than one element then success message should be plural
+			$success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
+			// cycle thru the boxes
+			foreach ($this->_req_data['checkbox'] as $TKT_ID) {
+				if ($trash) {
+					if (! $TKT->delete_by_ID($TKT_ID)) {
+						$success = 0;
+					}
+				} elseif (! $TKT->restore_by_ID($TKT_ID)) {
+					$success = 0;
+				}
+			}
+		} else {
+			// grab single id and trash
+			$TKT_ID = absint($this->_req_data['TKT_ID']);
+			if ($trash) {
+				if (! $TKT->delete_by_ID($TKT_ID)) {
+					$success = 0;
+				}
+			} elseif (! $TKT->restore_by_ID($TKT_ID)) {
+				$success = 0;
+			}
+		}
+		$action_desc = $trash ? 'moved to the trash' : 'restored';
+		$query_args = array(
+			'action' => 'ticket_list_table',
+			'status' => $trash ? '' : 'trashed',
+		);
+		$this->_redirect_after_action($success, 'Tickets', $action_desc, $query_args);
+	}
+
+
+	/**
+	 * Handles trashing default ticket.
+	 *
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _delete_ticket()
+	{
+		$success = 1;
+		// checkboxes?
+		if (! empty($this->_req_data['checkbox']) && is_array($this->_req_data['checkbox'])) {
+			// if array has more than one element then success message should be plural
+			$success = count($this->_req_data['checkbox']) > 1 ? 2 : 1;
+			// cycle thru the boxes
+			foreach ($this->_req_data['checkbox'] as $TKT_ID) {
+				// delete
+				if (! $this->_delete_the_ticket($TKT_ID)) {
+					$success = 0;
+				}
+			}
+		} else {
+			// grab single id and trash
+			$TKT_ID = absint($this->_req_data['TKT_ID']);
+			if (! $this->_delete_the_ticket($TKT_ID)) {
+				$success = 0;
+			}
+		}
+		$action_desc = 'deleted';
+		$query_args = array(
+			'action' => 'ticket_list_table',
+			'status' => 'trashed',
+		);
+		// fail safe.  If the default ticket count === 1 then we need to redirect to event overview.
+		if (EEM_Ticket::instance()->count_deleted_and_undeleted(
+			array(array('TKT_is_default' => 1)),
+			'TKT_ID',
+			true
+		)
+		) {
+			$query_args = array();
+		}
+		$this->_redirect_after_action($success, 'Tickets', $action_desc, $query_args);
+	}
+
+
+	/**
+	 * @param int $TKT_ID
+	 * @return bool|int
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	protected function _delete_the_ticket($TKT_ID)
+	{
+		$tkt = EEM_Ticket::instance()->get_one_by_ID($TKT_ID);
+		$tkt->_remove_relations('Datetime');
+		// delete all related prices first
+		$tkt->delete_related_permanently('Price');
+		return $tkt->delete_permanently();
+	}
 }