eventespresso / event-espresso-core

core/domain/DomainFactory.php

Indentation +89 added lines, -89 removed lines

@@ -22,101 +22,101 @@
  */
 class DomainFactory
 {
-    /**
-     * @var DomainInterface[]
-     */
-    protected static $domains = [];
+	/**
+	 * @var DomainInterface[]
+	 */
+	protected static $domains = [];
 
 
-    /**
-     * @param string $domain_fqcn       [required] Fully Qualified Class Name for the Domain class
-     * @param string $main_file         [required] path to the main plugin file
-     * @param string $version           [required] version string for the plugin
-     * @return DomainInterface
-     * @throws DomainException
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function create(string $domain_fqcn, string $main_file, string $version): DomainInterface
-    {
-        $fqcn = new FullyQualifiedName($domain_fqcn);
-        return DomainFactory::getDomain($fqcn->string(), [$main_file, $version]);
-    }
+	/**
+	 * @param string $domain_fqcn       [required] Fully Qualified Class Name for the Domain class
+	 * @param string $main_file         [required] path to the main plugin file
+	 * @param string $version           [required] version string for the plugin
+	 * @return DomainInterface
+	 * @throws DomainException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function create(string $domain_fqcn, string $main_file, string $version): DomainInterface
+	{
+		$fqcn = new FullyQualifiedName($domain_fqcn);
+		return DomainFactory::getDomain($fqcn->string(), [$main_file, $version]);
+	}
 
 
-    /**
-     * @param FullyQualifiedName $domain_fqcn   [required] Fully Qualified Class Name for the Domain class
-     * @param array              $arguments     [required] array of arguments to be passed to the Domain class
-     *                                          constructor. Must at least include the following two value objects:
-     *                                          [
-     *                                              EventEspresso\core\domain\values\FilePath $plugin_file
-     *                                              EventEspresso\core\domain\values\Version $version
-     *                                          ]
-     * @return DomainInterface
-     * @throws DomainException
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function getShared(FullyQualifiedName $domain_fqcn, array $arguments): DomainInterface
-    {
-        return DomainFactory::getDomain($domain_fqcn->string(), $arguments);
-    }
+	/**
+	 * @param FullyQualifiedName $domain_fqcn   [required] Fully Qualified Class Name for the Domain class
+	 * @param array              $arguments     [required] array of arguments to be passed to the Domain class
+	 *                                          constructor. Must at least include the following two value objects:
+	 *                                          [
+	 *                                              EventEspresso\core\domain\values\FilePath $plugin_file
+	 *                                              EventEspresso\core\domain\values\Version $version
+	 *                                          ]
+	 * @return DomainInterface
+	 * @throws DomainException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function getShared(FullyQualifiedName $domain_fqcn, array $arguments): DomainInterface
+	{
+		return DomainFactory::getDomain($domain_fqcn->string(), $arguments);
+	}
 
 
-    /**
-     * @return DomainInterface
-     * @throws DomainException
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidFilePathException
-     * @throws InvalidInterfaceException
-     */
-    public static function getEventEspressoCoreDomain(): DomainInterface
-    {
-        $fqcn = 'EventEspresso\core\domain\Domain';
-        if (! isset(DomainFactory::$domains[ $fqcn ])) {
-            DomainFactory::getDomain($fqcn, [EVENT_ESPRESSO_MAIN_FILE, espresso_version()]);
-        }
-        return DomainFactory::$domains[ $fqcn ];
-    }
+	/**
+	 * @return DomainInterface
+	 * @throws DomainException
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidFilePathException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function getEventEspressoCoreDomain(): DomainInterface
+	{
+		$fqcn = 'EventEspresso\core\domain\Domain';
+		if (! isset(DomainFactory::$domains[ $fqcn ])) {
+			DomainFactory::getDomain($fqcn, [EVENT_ESPRESSO_MAIN_FILE, espresso_version()]);
+		}
+		return DomainFactory::$domains[ $fqcn ];
+	}
 
 
-    /**
-     * @param string $fqcn
-     * @param array  $arguments
-     * @return DomainInterface
-     */
-    private static function getDomain(string $fqcn, array $arguments): DomainInterface
-    {
-        if (! isset(DomainFactory::$domains[ $fqcn ])) {
-            if (! isset($arguments[0], $arguments[1])) {
-                throw new InvalidArgumentException(
-                    esc_html__(
-                        'You need to pass at least two arguments, representing the addon plugin file and version, in order to generate a Domain class',
-                        'event_espresso'
-                    )
-                );
-            }
-            $filepath = $arguments[0] instanceof FilePath ? $arguments[0] : new FilePath($arguments[0]);
-            $version  = $arguments[1] instanceof Version ? $arguments[1] : Version::fromString($arguments[1]);
-            $domain   = new $fqcn($filepath, $version);
-            if (! $domain instanceof DomainBase || ! $domain instanceof $fqcn) {
-                throw new DomainException(
-                    sprintf(
-                        esc_html__(
-                            'The requested Domain class "%1$s" could not be loaded.',
-                            'event_espresso'
-                        ),
-                        $fqcn
-                    )
-                );
-            }
-            DomainFactory::$domains[ $fqcn ] = $domain;
-            // we still need to share this with the core loader to facilitate automatic dependency injection
-            LoaderFactory::getLoader()->share($fqcn, $domain, [$filepath, $version, $domain->assetNamespace()]);
-        }
-        return DomainFactory::$domains[ $fqcn ];
-    }
+	/**
+	 * @param string $fqcn
+	 * @param array  $arguments
+	 * @return DomainInterface
+	 */
+	private static function getDomain(string $fqcn, array $arguments): DomainInterface
+	{
+		if (! isset(DomainFactory::$domains[ $fqcn ])) {
+			if (! isset($arguments[0], $arguments[1])) {
+				throw new InvalidArgumentException(
+					esc_html__(
+						'You need to pass at least two arguments, representing the addon plugin file and version, in order to generate a Domain class',
+						'event_espresso'
+					)
+				);
+			}
+			$filepath = $arguments[0] instanceof FilePath ? $arguments[0] : new FilePath($arguments[0]);
+			$version  = $arguments[1] instanceof Version ? $arguments[1] : Version::fromString($arguments[1]);
+			$domain   = new $fqcn($filepath, $version);
+			if (! $domain instanceof DomainBase || ! $domain instanceof $fqcn) {
+				throw new DomainException(
+					sprintf(
+						esc_html__(
+							'The requested Domain class "%1$s" could not be loaded.',
+							'event_espresso'
+						),
+						$fqcn
+					)
+				);
+			}
+			DomainFactory::$domains[ $fqcn ] = $domain;
+			// we still need to share this with the core loader to facilitate automatic dependency injection
+			LoaderFactory::getLoader()->share($fqcn, $domain, [$filepath, $version, $domain->assetNamespace()]);
+		}
+		return DomainFactory::$domains[ $fqcn ];
+	}
 }

Spacing +7 added lines, -7 removed lines

@@ -76,10 +76,10 @@ 
     public static function getEventEspressoCoreDomain(): DomainInterface
     {
         $fqcn = 'EventEspresso\core\domain\Domain';
-        if (! isset(DomainFactory::$domains[ $fqcn ])) {
+        if ( ! isset(DomainFactory::$domains[$fqcn])) {
             DomainFactory::getDomain($fqcn, [EVENT_ESPRESSO_MAIN_FILE, espresso_version()]);
         }
-        return DomainFactory::$domains[ $fqcn ];
+        return DomainFactory::$domains[$fqcn];
     }
 
 
@@ -90,8 +90,8 @@ 
      */
     private static function getDomain(string $fqcn, array $arguments): DomainInterface
     {
-        if (! isset(DomainFactory::$domains[ $fqcn ])) {
-            if (! isset($arguments[0], $arguments[1])) {
+        if ( ! isset(DomainFactory::$domains[$fqcn])) {
+            if ( ! isset($arguments[0], $arguments[1])) {
                 throw new InvalidArgumentException(
                     esc_html__(
                         'You need to pass at least two arguments, representing the addon plugin file and version, in order to generate a Domain class',
@@ -102,7 +102,7 @@ 
             $filepath = $arguments[0] instanceof FilePath ? $arguments[0] : new FilePath($arguments[0]);
             $version  = $arguments[1] instanceof Version ? $arguments[1] : Version::fromString($arguments[1]);
             $domain   = new $fqcn($filepath, $version);
-            if (! $domain instanceof DomainBase || ! $domain instanceof $fqcn) {
+            if ( ! $domain instanceof DomainBase || ! $domain instanceof $fqcn) {
                 throw new DomainException(
                     sprintf(
                         esc_html__(
@@ -113,10 +113,10 @@ 
                     )
                 );
             }
-            DomainFactory::$domains[ $fqcn ] = $domain;
+            DomainFactory::$domains[$fqcn] = $domain;
             // we still need to share this with the core loader to facilitate automatic dependency injection
             LoaderFactory::getLoader()->share($fqcn, $domain, [$filepath, $version, $domain->assetNamespace()]);
         }
-        return DomainFactory::$domains[ $fqcn ];
+        return DomainFactory::$domains[$fqcn];
     }
 }

core/domain/DomainBase.php

Indentation +227 added lines, -227 removed lines

@@ -17,231 +17,231 @@
 abstract class DomainBase implements DomainInterface
 {
 
-    const ASSETS_FOLDER = 'assets/';
-
-    /**
-     * Equivalent to `__FILE__` for main plugin file.
-     *
-     * @var FilePath
-     */
-    private $plugin_file;
-
-    /**
-     * String indicating version for plugin
-     *
-     * @var string
-     */
-    private $version;
-
-    /**
-     * @var string $plugin_basename
-     */
-    private $plugin_basename;
-
-    /**
-     * @var string $plugin_path
-     */
-    private $plugin_path;
-
-    /**
-     * @var string $plugin_url
-     */
-    private $plugin_url;
-
-    /**
-     * @var string $asset_namespace
-     */
-    private $asset_namespace;
-
-    /**
-     * @var string $assets_path
-     */
-    private $assets_path;
-
-    /**
-     * @var bool
-     */
-    protected $initialized = false;
-
-
-    /**
-     * Initializes internal properties.
-     *
-     * @param FilePath $plugin_file
-     * @param Version  $version
-     * @param string $asset_namespace
-     */
-    public function __construct(
-        FilePath $plugin_file,
-        Version $version,
-        string $asset_namespace = Domain::ASSET_NAMESPACE
-    ) {
-        $this->plugin_file = $plugin_file;
-        $this->version     = $version;
-        $this->initialize($asset_namespace);
-    }
-
-
-    /**
-     * @param string $asset_namespace
-     * @return void
-     * @since $VID:$
-     */
-    public function initialize($asset_namespace = Domain::ASSET_NAMESPACE)
-    {
-        if (! $this->initialized) {
-            $this->plugin_basename = plugin_basename($this->pluginFile());
-            $this->plugin_path     = plugin_dir_path($this->pluginFile());
-            $this->plugin_url      = plugin_dir_url($this->pluginFile());
-            $this->setAssetNamespace($asset_namespace);
-            $this->setDistributionAssetsPath();
-            $this->initialized = true;
-        }
-    }
-
-
-    /**
-     * @param string $asset_namespace
-     * @return void
-     */
-    public function setAssetNamespace($asset_namespace = Domain::ASSET_NAMESPACE)
-    {
-        if (! $this->asset_namespace) {
-            $this->asset_namespace = sanitize_key(
-                // convert directory separators to dashes and remove file extension
-                str_replace(['/', '.php'], ['-', ''], $asset_namespace)
-            );
-        }
-    }
-
-
-    /**
-     * @throws DomainException
-     * @since $VID:$
-     */
-    private function setDistributionAssetsPath()
-    {
-        $assets_folder_paths = [
-            $this->plugin_path . DomainBase::ASSETS_FOLDER,
-            $this->plugin_path . 'src/' . DomainBase::ASSETS_FOLDER,
-        ];
-        foreach ($assets_folder_paths as $assets_folder_path) {
-            if (is_readable($assets_folder_path)) {
-                $this->assets_path = trailingslashit($assets_folder_path);
-                // once we find a valid path, just break out of loop
-                break;
-            }
-        }
-    }
-
-
-    /**
-     * @return string
-     */
-    public function pluginFile(): string
-    {
-        return (string) $this->plugin_file;
-    }
-
-
-    /**
-     * @return FilePath
-     */
-    public function pluginFileObject(): FilePath
-    {
-        return $this->plugin_file;
-    }
-
-
-    /**
-     * @return string
-     */
-    public function pluginBasename(): string
-    {
-        return $this->plugin_basename;
-    }
-
-
-    /**
-     * @param string $additional_path
-     * @return string
-     */
-    public function pluginPath($additional_path = ''): string
-    {
-        return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_path . $additional_path
-            : $this->plugin_path;
-    }
-
-
-    /**
-     * @param string $additional_path
-     * @return string
-     */
-    public function pluginUrl($additional_path = ''): string
-    {
-        return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_url . $additional_path
-            : $this->plugin_url;
-    }
-
-
-    /**
-     * @return string
-     */
-    public function version(): string
-    {
-        return (string) $this->version;
-    }
-
-
-    /**
-     * @return Version
-     */
-    public function versionValueObject()
-    {
-        return $this->version;
-    }
-
-
-    /**
-     * @return string
-     */
-    public function distributionAssetsFolder(): string
-    {
-        return DomainBase::ASSETS_FOLDER;
-    }
-
-
-    /**
-     * @param string $additional_path
-     * @return string
-     */
-    public function distributionAssetsPath($additional_path = ''): string
-    {
-        return is_string($additional_path) && $additional_path !== ''
-            ? $this->assets_path . $additional_path
-            : $this->assets_path;
-    }
-
-
-    /**
-     * @param string $additional_path
-     * @return string
-     */
-    public function distributionAssetsUrl($additional_path = ''): string
-    {
-        return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_url . DomainBase::ASSETS_FOLDER . $additional_path
-            : $this->plugin_url . DomainBase::ASSETS_FOLDER;
-    }
-
-
-    /**
-     * @return string
-     */
-    public function assetNamespace(): string
-    {
-        return $this->asset_namespace;
-    }
+	const ASSETS_FOLDER = 'assets/';
+
+	/**
+	 * Equivalent to `__FILE__` for main plugin file.
+	 *
+	 * @var FilePath
+	 */
+	private $plugin_file;
+
+	/**
+	 * String indicating version for plugin
+	 *
+	 * @var string
+	 */
+	private $version;
+
+	/**
+	 * @var string $plugin_basename
+	 */
+	private $plugin_basename;
+
+	/**
+	 * @var string $plugin_path
+	 */
+	private $plugin_path;
+
+	/**
+	 * @var string $plugin_url
+	 */
+	private $plugin_url;
+
+	/**
+	 * @var string $asset_namespace
+	 */
+	private $asset_namespace;
+
+	/**
+	 * @var string $assets_path
+	 */
+	private $assets_path;
+
+	/**
+	 * @var bool
+	 */
+	protected $initialized = false;
+
+
+	/**
+	 * Initializes internal properties.
+	 *
+	 * @param FilePath $plugin_file
+	 * @param Version  $version
+	 * @param string $asset_namespace
+	 */
+	public function __construct(
+		FilePath $plugin_file,
+		Version $version,
+		string $asset_namespace = Domain::ASSET_NAMESPACE
+	) {
+		$this->plugin_file = $plugin_file;
+		$this->version     = $version;
+		$this->initialize($asset_namespace);
+	}
+
+
+	/**
+	 * @param string $asset_namespace
+	 * @return void
+	 * @since $VID:$
+	 */
+	public function initialize($asset_namespace = Domain::ASSET_NAMESPACE)
+	{
+		if (! $this->initialized) {
+			$this->plugin_basename = plugin_basename($this->pluginFile());
+			$this->plugin_path     = plugin_dir_path($this->pluginFile());
+			$this->plugin_url      = plugin_dir_url($this->pluginFile());
+			$this->setAssetNamespace($asset_namespace);
+			$this->setDistributionAssetsPath();
+			$this->initialized = true;
+		}
+	}
+
+
+	/**
+	 * @param string $asset_namespace
+	 * @return void
+	 */
+	public function setAssetNamespace($asset_namespace = Domain::ASSET_NAMESPACE)
+	{
+		if (! $this->asset_namespace) {
+			$this->asset_namespace = sanitize_key(
+				// convert directory separators to dashes and remove file extension
+				str_replace(['/', '.php'], ['-', ''], $asset_namespace)
+			);
+		}
+	}
+
+
+	/**
+	 * @throws DomainException
+	 * @since $VID:$
+	 */
+	private function setDistributionAssetsPath()
+	{
+		$assets_folder_paths = [
+			$this->plugin_path . DomainBase::ASSETS_FOLDER,
+			$this->plugin_path . 'src/' . DomainBase::ASSETS_FOLDER,
+		];
+		foreach ($assets_folder_paths as $assets_folder_path) {
+			if (is_readable($assets_folder_path)) {
+				$this->assets_path = trailingslashit($assets_folder_path);
+				// once we find a valid path, just break out of loop
+				break;
+			}
+		}
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function pluginFile(): string
+	{
+		return (string) $this->plugin_file;
+	}
+
+
+	/**
+	 * @return FilePath
+	 */
+	public function pluginFileObject(): FilePath
+	{
+		return $this->plugin_file;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function pluginBasename(): string
+	{
+		return $this->plugin_basename;
+	}
+
+
+	/**
+	 * @param string $additional_path
+	 * @return string
+	 */
+	public function pluginPath($additional_path = ''): string
+	{
+		return is_string($additional_path) && $additional_path !== ''
+			? $this->plugin_path . $additional_path
+			: $this->plugin_path;
+	}
+
+
+	/**
+	 * @param string $additional_path
+	 * @return string
+	 */
+	public function pluginUrl($additional_path = ''): string
+	{
+		return is_string($additional_path) && $additional_path !== ''
+			? $this->plugin_url . $additional_path
+			: $this->plugin_url;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function version(): string
+	{
+		return (string) $this->version;
+	}
+
+
+	/**
+	 * @return Version
+	 */
+	public function versionValueObject()
+	{
+		return $this->version;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function distributionAssetsFolder(): string
+	{
+		return DomainBase::ASSETS_FOLDER;
+	}
+
+
+	/**
+	 * @param string $additional_path
+	 * @return string
+	 */
+	public function distributionAssetsPath($additional_path = ''): string
+	{
+		return is_string($additional_path) && $additional_path !== ''
+			? $this->assets_path . $additional_path
+			: $this->assets_path;
+	}
+
+
+	/**
+	 * @param string $additional_path
+	 * @return string
+	 */
+	public function distributionAssetsUrl($additional_path = ''): string
+	{
+		return is_string($additional_path) && $additional_path !== ''
+			? $this->plugin_url . DomainBase::ASSETS_FOLDER . $additional_path
+			: $this->plugin_url . DomainBase::ASSETS_FOLDER;
+	}
+
+
+	/**
+	 * @return string
+	 */
+	public function assetNamespace(): string
+	{
+		return $this->asset_namespace;
+	}
 }

Spacing +9 added lines, -9 removed lines

@@ -89,7 +89,7 @@ 
      */
     public function initialize($asset_namespace = Domain::ASSET_NAMESPACE)
     {
-        if (! $this->initialized) {
+        if ( ! $this->initialized) {
             $this->plugin_basename = plugin_basename($this->pluginFile());
             $this->plugin_path     = plugin_dir_path($this->pluginFile());
             $this->plugin_url      = plugin_dir_url($this->pluginFile());
@@ -106,7 +106,7 @@ 
      */
     public function setAssetNamespace($asset_namespace = Domain::ASSET_NAMESPACE)
     {
-        if (! $this->asset_namespace) {
+        if ( ! $this->asset_namespace) {
             $this->asset_namespace = sanitize_key(
                 // convert directory separators to dashes and remove file extension
                 str_replace(['/', '.php'], ['-', ''], $asset_namespace)
@@ -122,8 +122,8 @@ 
     private function setDistributionAssetsPath()
     {
         $assets_folder_paths = [
-            $this->plugin_path . DomainBase::ASSETS_FOLDER,
-            $this->plugin_path . 'src/' . DomainBase::ASSETS_FOLDER,
+            $this->plugin_path.DomainBase::ASSETS_FOLDER,
+            $this->plugin_path.'src/'.DomainBase::ASSETS_FOLDER,
         ];
         foreach ($assets_folder_paths as $assets_folder_path) {
             if (is_readable($assets_folder_path)) {
@@ -169,7 +169,7 @@ 
     public function pluginPath($additional_path = ''): string
     {
         return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_path . $additional_path
+            ? $this->plugin_path.$additional_path
             : $this->plugin_path;
     }
 
@@ -181,7 +181,7 @@ 
     public function pluginUrl($additional_path = ''): string
     {
         return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_url . $additional_path
+            ? $this->plugin_url.$additional_path
             : $this->plugin_url;
     }
 
@@ -220,7 +220,7 @@ 
     public function distributionAssetsPath($additional_path = ''): string
     {
         return is_string($additional_path) && $additional_path !== ''
-            ? $this->assets_path . $additional_path
+            ? $this->assets_path.$additional_path
             : $this->assets_path;
     }
 
@@ -232,8 +232,8 @@ 
     public function distributionAssetsUrl($additional_path = ''): string
     {
         return is_string($additional_path) && $additional_path !== ''
-            ? $this->plugin_url . DomainBase::ASSETS_FOLDER . $additional_path
-            : $this->plugin_url . DomainBase::ASSETS_FOLDER;
+            ? $this->plugin_url.DomainBase::ASSETS_FOLDER.$additional_path
+            : $this->plugin_url.DomainBase::ASSETS_FOLDER;
     }
 
 

modules/messages/EED_Messages.module.php

Indentation +1320 added lines, -1320 removed lines

@@ -16,1333 +16,1333 @@
 class EED_Messages extends EED_Module
 {
 
-    /**
-     * This holds the EE_messages controller
-     *
-     * @deprecated 4.9.0
-     * @var EE_messages $_EEMSG
-     */
-    protected static $_EEMSG;
-
-    /**
-     * @type EE_Message_Resource_Manager $_message_resource_manager
-     */
-    protected static $_message_resource_manager;
-
-    /**
-     * This holds the EE_Messages_Processor business class.
-     *
-     * @type EE_Messages_Processor
-     */
-    protected static $_MSG_PROCESSOR;
-
-    /**
-     * holds all the paths for various messages components.
-     * Utilized by autoloader registry
-     *
-     * @var array
-     */
-    protected static $_MSG_PATHS;
-
-
-    /**
-     * This will hold an array of messages template packs that are registered in the messages system.
-     * Format is:
-     * array(
-     *    'template_pack_dbref' => EE_Messages_Template_Pack (instance)
-     * )
-     *
-     * @var EE_Messages_Template_Pack[]
-     */
-    protected static $_TMP_PACKS = array();
-
-
-    /**
-     * @return EED_Messages
-     */
-    public static function instance()
-    {
-        return parent::get_instance(__CLASS__);
-    }
-
-
-    /**
-     *  set_hooks - for hooking into EE Core, other modules, etc
-     *
-     * @since 4.5.0
-     * @return    void
-     */
-    public static function set_hooks()
-    {
-        // actions
-        add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
-        add_action(
-            'AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
-            array('EED_Messages', 'maybe_registration'),
-            10,
-            2
-        );
-        // filters
-        add_filter(
-            'FHEE__EE_Registration__receipt_url__receipt_url',
-            array('EED_Messages', 'registration_message_trigger_url'),
-            10,
-            4
-        );
-        add_filter(
-            'FHEE__EE_Registration__invoice_url__invoice_url',
-            array('EED_Messages', 'registration_message_trigger_url'),
-            10,
-            4
-        );
-        // register routes
-        self::_register_routes();
-    }
-
-    /**
-     *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
-     *
-     * @access    public
-     * @return    void
-     */
-    public static function set_hooks_admin()
-    {
-        // actions
-        add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
-        add_action(
-            'AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
-            array('EED_Messages', 'payment_reminder'),
-            10
-        );
-        add_action(
-            'AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
-            array('EED_Messages', 'maybe_registration'),
-            10,
-            3
-        );
-        add_action(
-            'AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send__with_registrations',
-            array('EED_Messages', 'send_newsletter_message'),
-            10,
-            2
-        );
-        add_action(
-            'AHEE__EES_Espresso_Cancelled__process_shortcode__transaction',
-            array('EED_Messages', 'cancelled_registration'),
-            10
-        );
-        add_action(
-            'AHEE__EE_Admin_Page___process_admin_payment_notification',
-            array('EED_Messages', 'process_admin_payment'),
-            10,
-            1
-        );
-        // filters
-        add_filter(
-            'FHEE__EE_Admin_Page___process_resend_registration__success',
-            array('EED_Messages', 'process_resend'),
-            10,
-            2
-        );
-        add_filter(
-            'FHEE__EE_Registration__receipt_url__receipt_url',
-            array('EED_Messages', 'registration_message_trigger_url'),
-            10,
-            4
-        );
-        add_filter(
-            'FHEE__EE_Registration__invoice_url__invoice_url',
-            array('EED_Messages', 'registration_message_trigger_url'),
-            10,
-            4
-        );
-    }
-
-
-    /**
-     * All the message triggers done by route go in here.
-     *
-     * @since 4.5.0
-     * @return void
-     */
-    protected static function _register_routes()
-    {
-        EE_Config::register_route('msg_url_trigger', 'Messages', 'run');
-        EE_Config::register_route('msg_cron_trigger', 'Messages', 'execute_batch_request');
-        EE_Config::register_route('msg_browser_trigger', 'Messages', 'browser_trigger');
-        EE_Config::register_route('msg_browser_error_trigger', 'Messages', 'browser_error_trigger');
-        do_action('AHEE__EED_Messages___register_routes');
-    }
-
-
-    /**
-     * This is called when a browser display trigger is executed.
-     * The browser display trigger is typically used when a already generated message is displayed directly in the
-     * browser.
-     *
-     * @since 4.9.0
-     * @param WP $WP
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function browser_trigger($WP)
-    {
-        // ensure controller is loaded
-        self::_load_controller();
-        $token = EE_Registry::instance()->REQ->get('token');
-        try {
-            $mtg = new EE_Message_Generated_From_Token($token, 'html', self::$_message_resource_manager);
-            self::$_MSG_PROCESSOR->generate_and_send_now($mtg);
-        } catch (EE_Error $e) {
-            $error_msg = __(
-                'Please note that a system message failed to send due to a technical issue.',
-                'event_espresso'
-            );
-            // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     * This is called when a browser error trigger is executed.
-     * When triggered this will grab the EE_Message matching the token in the request and use that to get the error
-     * message and display it.
-     *
-     * @since 4.9.0
-     * @param $WP
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function browser_error_trigger($WP)
-    {
-        $token = EE_Registry::instance()->REQ->get('token');
-        if ($token) {
-            $message = EEM_Message::instance()->get_one_by_token($token);
-            if ($message instanceof EE_Message) {
-                header('HTTP/1.1 200 OK');
-                $error_msg = nl2br($message->error_message());
-                ?>
+	/**
+	 * This holds the EE_messages controller
+	 *
+	 * @deprecated 4.9.0
+	 * @var EE_messages $_EEMSG
+	 */
+	protected static $_EEMSG;
+
+	/**
+	 * @type EE_Message_Resource_Manager $_message_resource_manager
+	 */
+	protected static $_message_resource_manager;
+
+	/**
+	 * This holds the EE_Messages_Processor business class.
+	 *
+	 * @type EE_Messages_Processor
+	 */
+	protected static $_MSG_PROCESSOR;
+
+	/**
+	 * holds all the paths for various messages components.
+	 * Utilized by autoloader registry
+	 *
+	 * @var array
+	 */
+	protected static $_MSG_PATHS;
+
+
+	/**
+	 * This will hold an array of messages template packs that are registered in the messages system.
+	 * Format is:
+	 * array(
+	 *    'template_pack_dbref' => EE_Messages_Template_Pack (instance)
+	 * )
+	 *
+	 * @var EE_Messages_Template_Pack[]
+	 */
+	protected static $_TMP_PACKS = array();
+
+
+	/**
+	 * @return EED_Messages
+	 */
+	public static function instance()
+	{
+		return parent::get_instance(__CLASS__);
+	}
+
+
+	/**
+	 *  set_hooks - for hooking into EE Core, other modules, etc
+	 *
+	 * @since 4.5.0
+	 * @return    void
+	 */
+	public static function set_hooks()
+	{
+		// actions
+		add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
+		add_action(
+			'AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
+			array('EED_Messages', 'maybe_registration'),
+			10,
+			2
+		);
+		// filters
+		add_filter(
+			'FHEE__EE_Registration__receipt_url__receipt_url',
+			array('EED_Messages', 'registration_message_trigger_url'),
+			10,
+			4
+		);
+		add_filter(
+			'FHEE__EE_Registration__invoice_url__invoice_url',
+			array('EED_Messages', 'registration_message_trigger_url'),
+			10,
+			4
+		);
+		// register routes
+		self::_register_routes();
+	}
+
+	/**
+	 *    set_hooks_admin - for hooking into EE Admin Core, other modules, etc
+	 *
+	 * @access    public
+	 * @return    void
+	 */
+	public static function set_hooks_admin()
+	{
+		// actions
+		add_action('AHEE__EE_Payment_Processor__update_txn_based_on_payment', array('EED_Messages', 'payment'), 10, 2);
+		add_action(
+			'AHEE__Transactions_Admin_Page___send_payment_reminder__process_admin_payment_reminder',
+			array('EED_Messages', 'payment_reminder'),
+			10
+		);
+		add_action(
+			'AHEE__EE_Registration_Processor__trigger_registration_update_notifications',
+			array('EED_Messages', 'maybe_registration'),
+			10,
+			3
+		);
+		add_action(
+			'AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send__with_registrations',
+			array('EED_Messages', 'send_newsletter_message'),
+			10,
+			2
+		);
+		add_action(
+			'AHEE__EES_Espresso_Cancelled__process_shortcode__transaction',
+			array('EED_Messages', 'cancelled_registration'),
+			10
+		);
+		add_action(
+			'AHEE__EE_Admin_Page___process_admin_payment_notification',
+			array('EED_Messages', 'process_admin_payment'),
+			10,
+			1
+		);
+		// filters
+		add_filter(
+			'FHEE__EE_Admin_Page___process_resend_registration__success',
+			array('EED_Messages', 'process_resend'),
+			10,
+			2
+		);
+		add_filter(
+			'FHEE__EE_Registration__receipt_url__receipt_url',
+			array('EED_Messages', 'registration_message_trigger_url'),
+			10,
+			4
+		);
+		add_filter(
+			'FHEE__EE_Registration__invoice_url__invoice_url',
+			array('EED_Messages', 'registration_message_trigger_url'),
+			10,
+			4
+		);
+	}
+
+
+	/**
+	 * All the message triggers done by route go in here.
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 */
+	protected static function _register_routes()
+	{
+		EE_Config::register_route('msg_url_trigger', 'Messages', 'run');
+		EE_Config::register_route('msg_cron_trigger', 'Messages', 'execute_batch_request');
+		EE_Config::register_route('msg_browser_trigger', 'Messages', 'browser_trigger');
+		EE_Config::register_route('msg_browser_error_trigger', 'Messages', 'browser_error_trigger');
+		do_action('AHEE__EED_Messages___register_routes');
+	}
+
+
+	/**
+	 * This is called when a browser display trigger is executed.
+	 * The browser display trigger is typically used when a already generated message is displayed directly in the
+	 * browser.
+	 *
+	 * @since 4.9.0
+	 * @param WP $WP
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function browser_trigger($WP)
+	{
+		// ensure controller is loaded
+		self::_load_controller();
+		$token = EE_Registry::instance()->REQ->get('token');
+		try {
+			$mtg = new EE_Message_Generated_From_Token($token, 'html', self::$_message_resource_manager);
+			self::$_MSG_PROCESSOR->generate_and_send_now($mtg);
+		} catch (EE_Error $e) {
+			$error_msg = __(
+				'Please note that a system message failed to send due to a technical issue.',
+				'event_espresso'
+			);
+			// add specific message for developers if WP_DEBUG in on
+			$error_msg .= '||' . $e->getMessage();
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 * This is called when a browser error trigger is executed.
+	 * When triggered this will grab the EE_Message matching the token in the request and use that to get the error
+	 * message and display it.
+	 *
+	 * @since 4.9.0
+	 * @param $WP
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function browser_error_trigger($WP)
+	{
+		$token = EE_Registry::instance()->REQ->get('token');
+		if ($token) {
+			$message = EEM_Message::instance()->get_one_by_token($token);
+			if ($message instanceof EE_Message) {
+				header('HTTP/1.1 200 OK');
+				$error_msg = nl2br($message->error_message());
+				?>
                 <!DOCTYPE html>
                 <html>
                 <head></head>
                 <body>
                 <?php echo empty($error_msg)
-                    ? esc_html__(
-                        'Unfortunately, we were unable to capture the error message for this message.',
-                        'event_espresso'
-                    )
-                    : wp_kses(
-                        $error_msg,
-                        array(
-                            'a'      => array(
-                                'href'  => array(),
-                                'title' => array(),
-                            ),
-                            'span'   => array(),
-                            'div'    => array(),
-                            'p'      => array(),
-                            'strong' => array(),
-                            'em'     => array(),
-                            'br'     => array(),
-                        )
-                    ); ?>
+					? esc_html__(
+						'Unfortunately, we were unable to capture the error message for this message.',
+						'event_espresso'
+					)
+					: wp_kses(
+						$error_msg,
+						array(
+							'a'      => array(
+								'href'  => array(),
+								'title' => array(),
+							),
+							'span'   => array(),
+							'div'    => array(),
+							'p'      => array(),
+							'strong' => array(),
+							'em'     => array(),
+							'br'     => array(),
+						)
+					); ?>
                 </body>
                 </html>
                 <?php
-                exit;
-            }
-        }
-        return;
-    }
-
-
-    /**
-     *  This runs when the msg_url_trigger route has initiated.
-     *
-     * @since 4.5.0
-     * @param WP $WP
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public function run($WP)
-    {
-        // ensure controller is loaded
-        self::_load_controller();
-        // attempt to process message
-        try {
-            /** @type EE_Message_To_Generate_From_Request $message_to_generate */
-            $message_to_generate = EE_Registry::instance()->load_lib('Message_To_Generate_From_Request');
-            self::$_MSG_PROCESSOR->generate_and_send_now($message_to_generate);
-        } catch (EE_Error $e) {
-            $error_msg = __(
-                'Please note that a system message failed to send due to a technical issue.',
-                'event_espresso'
-            );
-            // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
-            EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
-        }
-    }
-
-
-    /**
-     * This is triggered by the 'msg_cron_trigger' route.
-     *
-     * @param WP $WP
-     */
-    public function execute_batch_request($WP)
-    {
-        $this->run_cron();
-        header('HTTP/1.1 200 OK');
-        exit();
-    }
-
-
-    /**
-     * This gets executed on wp_cron jobs or when a batch request is initiated on its own separate non regular wp
-     * request.
-     */
-    public function run_cron()
-    {
-        self::_load_controller();
-        // get required vars
-        $cron_type = EE_Registry::instance()->REQ->get('type');
-        $transient_key = EE_Registry::instance()->REQ->get('key');
-
-        // now let's verify transient, if not valid exit immediately
-        if (! get_transient($transient_key)) {
-            /**
-             * trigger error so this gets in the error logs.  This is important because it happens on a non-user
-             * request.
-             */
-            trigger_error(esc_attr__('Invalid Request (Transient does not exist)', 'event_espresso'));
-        }
-
-        // if made it here, lets' delete the transient to keep the db clean
-        delete_transient($transient_key);
-
-        if (apply_filters('FHEE__EED_Messages__run_cron__use_wp_cron', true)) {
-            $method = 'batch_' . $cron_type . '_from_queue';
-            if (method_exists(self::$_MSG_PROCESSOR, $method)) {
-                self::$_MSG_PROCESSOR->$method();
-            } else {
-                // no matching task
-                /**
-                 * trigger error so this gets in the error logs.  This is important because it happens on a non user
-                 * request.
-                 */
-                trigger_error(
-                    esc_attr(
-                        sprintf(
-                            __('There is no task corresponding to this route %s', 'event_espresso'),
-                            $cron_type
-                        )
-                    )
-                );
-            }
-        }
-
-        do_action('FHEE__EED_Messages__run_cron__end');
-    }
-
-
-    /**
-     * This is used to retrieve the template pack for the given name.
-     * Retrieved packs are cached on the static $_TMP_PACKS array.  If there is no class matching the given name then
-     * the default template pack is returned.
-     *
-     * @deprecated 4.9.0  @see EEH_MSG_Template::get_template_pack()
-     * @param string $template_pack_name This should correspond to the dbref of the template pack (which is also used
-     *                                   in generating the Pack class name).
-     * @return EE_Messages_Template_Pack
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function get_template_pack($template_pack_name)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::get_template_pack($template_pack_name);
-    }
-
-
-    /**
-     * Retrieves an array of all template packs.
-     * Array is in the format array( 'dbref' => EE_Messages_Template_Pack )
-     *
-     * @deprecated 4.9.0  @see EEH_MSG_Template_Pack::get_template_pack_collection
-     * @return EE_Messages_Template_Pack[]
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function get_template_packs()
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-
-        // for backward compat, let's make sure this returns in the same format as originally.
-        $template_pack_collection = EEH_MSG_Template::get_template_pack_collection();
-        $template_pack_collection->rewind();
-        $template_packs = array();
-        while ($template_pack_collection->valid()) {
-            $template_packs[ $template_pack_collection->current()->dbref ] = $template_pack_collection->current();
-            $template_pack_collection->next();
-        }
-        return $template_packs;
-    }
-
-
-    /**
-     * This simply makes sure the autoloaders are registered for the EE_messages system.
-     *
-     * @since 4.5.0
-     * @return void
-     * @throws EE_Error
-     */
-    public static function set_autoloaders()
-    {
-        if (empty(self::$_MSG_PATHS)) {
-            self::_set_messages_paths();
-            foreach (self::$_MSG_PATHS as $path) {
-                EEH_Autoloader::register_autoloaders_for_each_file_in_folder($path);
-            }
-            // add aliases
-            EEH_Autoloader::add_alias('EE_messages', 'EE_messages');
-            EEH_Autoloader::add_alias('EE_messenger', 'EE_messenger');
-        }
-    }
-
-
-    /**
-     * Take care of adding all the paths for the messages components to the $_MSG_PATHS property
-     * for use by the Messages Autoloaders
-     *
-     * @since 4.5.0
-     * @return void.
-     */
-    protected static function _set_messages_paths()
-    {
-        self::$_MSG_PATHS = apply_filters(
-            'FHEE__EED_Messages___set_messages_paths___MSG_PATHS',
-            [
-                EE_LIBRARIES . 'messages/message_type',
-                EE_LIBRARIES . 'messages/messenger',
-                EE_LIBRARIES . 'messages/defaults',
-                EE_LIBRARIES . 'messages/defaults/email',
-                EE_LIBRARIES . 'messages/data_class',
-                EE_LIBRARIES . 'messages/validators',
-                EE_LIBRARIES . 'messages/validators/email',
-                EE_LIBRARIES . 'messages/validators/html',
-                EE_LIBRARIES . 'shortcodes',
-            ]
-        );
-    }
-
-
-    /**
-     * Takes care of loading dependencies
-     *
-     * @since 4.5.0
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected static function _load_controller()
-    {
-        if (! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
-            EE_Registry::instance()->load_core('Request_Handler');
-            self::set_autoloaders();
-            self::$_EEMSG = EE_Registry::instance()->load_lib('messages');
-            self::$_MSG_PROCESSOR = EE_Registry::instance()->load_lib('Messages_Processor');
-            self::$_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
-        }
-    }
-
-
-    /**
-     * @param EE_Transaction $transaction
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function payment_reminder(EE_Transaction $transaction)
-    {
-        self::_load_controller();
-        $data = array($transaction, null);
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('payment_reminder', $data);
-    }
-
-
-    /**
-     * Any messages triggers for after successful gateway payments should go in here.
-     *
-     * @param EE_Transaction  $transaction object
-     * @param EE_Payment|null $payment     object
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function payment(EE_Transaction $transaction, EE_Payment $payment = null)
-    {
-        // if there's no payment object, then we cannot do a payment type message!
-        if (! $payment instanceof EE_Payment) {
-            return;
-        }
-        self::_load_controller();
-        $data = array($transaction, $payment);
-        EE_Registry::instance()->load_helper('MSG_Template');
-        $message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
-        // if payment amount is less than 0 then switch to payment_refund message type.
-        $message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
-    }
-
-
-    /**
-     * @param EE_Transaction $transaction
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function cancelled_registration(EE_Transaction $transaction)
-    {
-        self::_load_controller();
-        $data = array($transaction, null);
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('cancelled_registration', $data);
-    }
-
-
-    /**
-     * Trigger for Registration messages
-     * Note that what registration message type is sent depends on what the reg status is for the registrations on the
-     * incoming transaction.
-     *
-     * @param EE_Registration $registration
-     * @param array           $extra_details
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     * @throws EntityNotFoundException
-     */
-    public static function maybe_registration(EE_Registration $registration, $extra_details = array())
-    {
-
-        if (! self::_verify_registration_notification_send($registration, $extra_details)) {
-            // no messages please
-            return;
-        }
-
-        // get all non-trashed registrations so we make sure we send messages for the right status.
-        $all_registrations = $registration->transaction()->registrations(
-            array(
-                array('REG_deleted' => false),
-                'order_by' => array(
-                    'Event.EVT_name'     => 'ASC',
-                    'Attendee.ATT_lname' => 'ASC',
-                    'Attendee.ATT_fname' => 'ASC',
-                ),
-            )
-        );
-        // cached array of statuses so we only trigger messages once per status.
-        $statuses_sent = array();
-        self::_load_controller();
-        $mtgs = array();
-
-        // loop through registrations and trigger messages once per status.
-        foreach ($all_registrations as $reg) {
-            // already triggered?
-            if (in_array($reg->status_ID(), $statuses_sent)) {
-                continue;
-            }
-
-            $message_type = EEH_MSG_Template::convert_reg_status_to_message_type($reg->status_ID());
-            $mtgs = array_merge(
-                $mtgs,
-                self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
-                    $message_type,
-                    array($registration->transaction(), null, $reg->status_ID())
-                )
-            );
-            $statuses_sent[] = $reg->status_ID();
-        }
-
-        if (count($statuses_sent) > 1) {
-            $mtgs = array_merge(
-                $mtgs,
-                self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
-                    'registration_summary',
-                    array($registration->transaction(), null)
-                )
-            );
-        }
-
-        // batch queue and initiate request
-        self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($mtgs);
-        self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
-    }
-
-
-    /**
-     * This is a helper method used to very whether a registration notification should be sent or
-     * not.  Prevents duplicate notifications going out for registration context notifications.
-     *
-     * @param EE_Registration $registration  [description]
-     * @param array           $extra_details [description]
-     * @return bool          true = send away, false = nope halt the presses.
-     */
-    protected static function _verify_registration_notification_send(
-        EE_Registration $registration,
-        $extra_details = array()
-    ) {
-        if (! $registration->is_primary_registrant()) {
-            return false;
-        }
-        // first we check if we're in admin and not doing front ajax
-        if (is_admin() && ! EE_FRONT_AJAX) {
-            // make sure appropriate admin params are set for sending messages
-            if (empty($_REQUEST['txn_reg_status_change']['send_notifications'])
-                || ! absint($_REQUEST['txn_reg_status_change']['send_notifications'])
-            ) {
-                // no messages sent please.
-                return false;
-            }
-        } else {
-            // frontend request (either regular or via AJAX)
-            // TXN is NOT finalized ?
-            if (! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
-                return false;
-            }
-            // return visit but nothing changed ???
-            if (isset($extra_details['revisit'], $extra_details['status_updates']) &&
-                $extra_details['revisit'] && ! $extra_details['status_updates']
-            ) {
-                return false;
-            }
-            // NOT sending messages && reg status is something other than "Not-Approved"
-            if (! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
-                $registration->status_ID() !== EEM_Registration::status_id_not_approved
-            ) {
-                return false;
-            }
-        }
-        // release the kraken
-        return true;
-    }
-
-
-    /**
-     * Simply returns an array indexed by Registration Status ID and the related message_type name associated with that
-     * status id.
-     *
-     * @deprecated 4.9.0  Use EEH_MSG_Template::reg_status_to_message_type_array()
-     *                    or EEH_MSG_Template::convert_reg_status_to_message_type
-     * @param string $reg_status
-     * @return array
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected static function _get_reg_status_array($reg_status = '')
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
-            ? EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
-            : EEH_MSG_Template::reg_status_to_message_type_array();
-    }
-
-
-    /**
-     * Simply returns the payment message type for the given payment status.
-     *
-     * @deprecated 4.9.0 Use EEH_MSG_Template::payment_status_to_message_type_array
-     *                   or EEH_MSG_Template::convert_payment_status_to_message_type
-     * @param string $payment_status The payment status being matched.
-     * @return bool|string The payment message type slug matching the status or false if no match.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    protected static function _get_payment_message_type($payment_status)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        return EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
-            ? EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
-            : false;
-    }
-
-
-    /**
-     * Message triggers for a resending already sent message(s) (via EE_Message list table)
-     *
-     * @access public
-     * @param array $req_data This is the $_POST & $_GET data sent from EE_Admin Pages
-     * @return bool success/fail
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function process_resend($req_data)
-    {
-        self::_load_controller();
-
-        // if $msgID in this request then skip to the new resend_message
-        if (EE_Registry::instance()->REQ->get('MSG_ID')) {
-            return self::resend_message();
-        }
-
-        // make sure any incoming request data is set on the REQ so that it gets picked up later.
-        $req_data = (array) $req_data;
-        foreach ($req_data as $request_key => $request_value) {
-            EE_Registry::instance()->REQ->set($request_key, $request_value);
-        }
-
-        if (! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request(
-        )) {
-            return false;
-        }
-
-        try {
-            self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($messages_to_send);
-            self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
-        } catch (EE_Error $e) {
-            EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
-            return false;
-        }
-        EE_Error::add_success(
-            __('Messages have been successfully queued for generation and sending.', 'event_espresso')
-        );
-        return true; // everything got queued.
-    }
-
-
-    /**
-     * Message triggers for a resending already sent message(s) (via EE_Message list table)
-     *
-     * @return bool
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function resend_message()
-    {
-        self::_load_controller();
-
-        $msgID = EE_Registry::instance()->REQ->get('MSG_ID');
-        if (! $msgID) {
-            EE_Error::add_error(
-                __(
-                    'Something went wrong because there is no "MSG_ID" value in the request',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-            return false;
-        }
-
-        self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send((array) $msgID);
-
-        // setup success message.
-        $count_ready_for_resend = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
-        EE_Error::add_success(
-            sprintf(
-                _n(
-                    'There was %d message queued for resending.',
-                    'There were %d messages queued for resending.',
-                    $count_ready_for_resend,
-                    'event_espresso'
-                ),
-                $count_ready_for_resend
-            )
-        );
-        return true;
-    }
-
-
-    /**
-     * Message triggers for manual payment applied by admin
-     *
-     * @param  EE_Payment $payment EE_payment object
-     * @return bool success/fail
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function process_admin_payment(EE_Payment $payment)
-    {
-        EE_Registry::instance()->load_helper('MSG_Template');
-        // we need to get the transaction object
-        $transaction = $payment->transaction();
-        if ($transaction instanceof EE_Transaction) {
-            $data = array($transaction, $payment);
-            $message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
-
-            // if payment amount is less than 0 then switch to payment_refund message type.
-            $message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
-
-            // if payment_refund is selected, but the status is NOT accepted.  Then change message type to false so NO message notification goes out.
-            $message_type = $message_type == 'payment_refund' && $payment->STS_ID() != EEM_Payment::status_id_approved
-                ? false : $message_type;
-
-            self::_load_controller();
-
-            self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
-
-            // get count of queued for generation
-            $count_to_generate = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(
-                array(
-                    EEM_Message::status_incomplete,
-                    EEM_Message::status_idle,
-                )
-            );
-
-            if ($count_to_generate > 0 && self::$_MSG_PROCESSOR->get_queue()->get_message_repository()->count() !== 0) {
-                add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
-                return true;
-            } else {
-                $count_failed = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(
-                    EEM_Message::instance()->stati_indicating_failed_sending()
-                );
-                /**
-                 * Verify that there are actually errors.  If not then we return a success message because the queue might have been emptied due to successful
-                 * IMMEDIATE generation.
-                 */
-                if ($count_failed > 0) {
-                    EE_Error::add_error(
-                        sprintf(
-                            _n(
-                                'The payment notification generation failed.',
-                                '%d payment notifications failed being sent.',
-                                $count_failed,
-                                'event_espresso'
-                            ),
-                            $count_failed
-                        ),
-                        __FILE__,
-                        __FUNCTION__,
-                        __LINE__
-                    );
-
-                    return false;
-                } else {
-                    add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
-                    return true;
-                }
-            }
-        } else {
-            EE_Error::add_error(
-                'Unable to generate the payment notification because the given value for the transaction is invalid.',
-                'event_espresso'
-            );
-            return false;
-        }
-    }
-
-
-    /**
-     * Callback for AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send_with_registrations trigger
-     *
-     * @since   4.3.0
-     * @param  EE_Registration[] $registrations an array of EE_Registration objects
-     * @param  int               $grp_id        a specific message template group id.
-     * @return void
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function send_newsletter_message($registrations, $grp_id)
-    {
-        // make sure mtp is id and set it in the EE_Request Handler later messages setup.
-        EE_Registry::instance()->REQ->set('GRP_ID', (int) $grp_id);
-        self::_load_controller();
-        self::$_MSG_PROCESSOR->generate_for_all_active_messengers('newsletter', $registrations);
-    }
-
-
-    /**
-     * Callback for FHEE__EE_Registration__invoice_url__invoice_url or FHEE__EE_Registration__receipt_url__receipt_url
-     *
-     * @since   4.3.0
-     * @param    string          $registration_message_trigger_url
-     * @param    EE_Registration $registration
-     * @param string             $messenger
-     * @param string             $message_type
-     * @return string
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function registration_message_trigger_url(
-        $registration_message_trigger_url,
-        EE_Registration $registration,
-        $messenger = 'html',
-        $message_type = 'invoice'
-    ) {
-        // whitelist $messenger
-        switch ($messenger) {
-            case 'pdf':
-                $sending_messenger = 'pdf';
-                $generating_messenger = 'html';
-                break;
-            case 'html':
-            default:
-                $sending_messenger = 'html';
-                $generating_messenger = 'html';
-                break;
-        }
-        // whitelist $message_type
-        switch ($message_type) {
-            case 'receipt':
-                $message_type = 'receipt';
-                break;
-            case 'invoice':
-            default:
-                $message_type = 'invoice';
-                break;
-        }
-        // verify that both the messenger AND the message type are active
-        if (EEH_MSG_Template::is_messenger_active($sending_messenger)
-            && EEH_MSG_Template::is_mt_active($message_type)
-        ) {
-            // need to get the correct message template group for this (i.e. is there a custom invoice for the event this registration is registered for?)
-            $template_query_params = array(
-                'MTP_is_active'    => true,
-                'MTP_messenger'    => $generating_messenger,
-                'MTP_message_type' => $message_type,
-                'Event.EVT_ID'     => $registration->event_ID(),
-            );
-            // get the message template group.
-            $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
-            // if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
-                // remove EVT_ID from query params so that global templates get picked up
-                unset($template_query_params['Event.EVT_ID']);
-                // get global template as the fallback
-                $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
-            }
-            // if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
-                return '';
-            }
-            // generate the URL
-            $registration_message_trigger_url = EEH_MSG_Template::generate_url_trigger(
-                $sending_messenger,
-                $generating_messenger,
-                'purchaser',
-                $message_type,
-                $registration,
-                $msg_template_group->ID(),
-                $registration->transaction_ID()
-            );
-        }
-        return $registration_message_trigger_url;
-    }
-
-
-    /**
-     * Use to generate and return a message preview!
-     *
-     * @param  string $type      This should correspond with a valid message type
-     * @param  string $context   This should correspond with a valid context for the message type
-     * @param  string $messenger This should correspond with a valid messenger.
-     * @param bool    $send      true we will do a test send using the messenger delivery, false we just do a regular
-     *                           preview
-     * @return bool|string The body of the message or if send is requested, sends.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function preview_message($type, $context, $messenger, $send = false)
-    {
-        self::_load_controller();
-        $mtg = new EE_Message_To_Generate(
-            $messenger,
-            $type,
-            array(),
-            $context,
-            true
-        );
-        $generated_preview_queue = self::$_MSG_PROCESSOR->generate_for_preview($mtg, $send);
-        if ($generated_preview_queue instanceof EE_Messages_Queue) {
-            // loop through all content for the preview and remove any persisted records.
-            $content = '';
-            foreach ($generated_preview_queue->get_message_repository() as $message) {
-                $content = $message->content();
-                if ($message->ID() > 0 && $message->STS_ID() !== EEM_Message::status_failed) {
-                    $message->delete();
-                }
-            }
-            return $content;
-        } else {
-            return $generated_preview_queue;
-        }
-    }
-
-
-    /**
-     * This is a method that allows for sending a message using a messenger matching the string given and the provided
-     * EE_Message_Queue object.  The EE_Message_Queue object is used to create a single aggregate EE_Message via the
-     * content found in the EE_Message objects in the queue.
-     *
-     * @since 4.9.0
-     * @param string            $messenger            a string matching a valid active messenger in the system
-     * @param string            $message_type         Although it seems contrary to the name of the method, a message
-     *                                                type name is still required to send along the message type to the
-     *                                                messenger because this is used for determining what specific
-     *                                                variations might be loaded for the generated message.
-     * @param EE_Messages_Queue $queue
-     * @param string            $custom_subject       Can be used to set what the custom subject string will be on the
-     *                                                aggregate EE_Message object.
-     * @return bool success or fail.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws ReflectionException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     */
-    public static function send_message_with_messenger_only(
-        $messenger,
-        $message_type,
-        EE_Messages_Queue $queue,
-        $custom_subject = ''
-    ) {
-        self::_load_controller();
-        /** @type EE_Message_To_Generate_From_Queue $message_to_generate */
-        $message_to_generate = EE_Registry::instance()->load_lib(
-            'Message_To_Generate_From_Queue',
-            array(
-                $messenger,
-                $message_type,
-                $queue,
-                $custom_subject,
-            )
-        );
-        return self::$_MSG_PROCESSOR->queue_for_sending($message_to_generate);
-    }
-
-
-    /**
-     * Generates Messages immediately for EE_Message IDs (but only for the correct status for generation)
-     *
-     * @since 4.9.0
-     * @param array $message_ids An array of message ids
-     * @return bool|EE_Messages_Queue false if nothing was generated, EE_Messages_Queue containing generated
-     *                           messages.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function generate_now($message_ids)
-    {
-        self::_load_controller();
-        $messages = EEM_Message::instance()->get_all(
-            array(
-                0 => array(
-                    'MSG_ID' => array('IN', $message_ids),
-                    'STS_ID' => EEM_Message::status_incomplete,
-                ),
-            )
-        );
-        $generated_queue = false;
-        if ($messages) {
-            $generated_queue = self::$_MSG_PROCESSOR->batch_generate_from_queue($messages);
-        }
-
-        if (! $generated_queue instanceof EE_Messages_Queue) {
-            EE_Error::add_error(
-                __(
-                    'The messages were not generated. This could mean there is already a batch being generated on a separate request, or because the selected messages are not ready for generation. Please wait a minute or two and try again.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return $generated_queue;
-    }
-
-
-    /**
-     * Sends messages immediately for the incoming message_ids that have the status of EEM_Message::status_resend or,
-     * EEM_Message::status_idle
-     *
-     * @since 4.9.0
-     * @param $message_ids
-     * @return bool|EE_Messages_Queue false if no messages sent.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function send_now($message_ids)
-    {
-        self::_load_controller();
-        $messages = EEM_Message::instance()->get_all(
-            array(
-                0 => array(
-                    'MSG_ID' => array('IN', $message_ids),
-                    'STS_ID' => array(
-                        'IN',
-                        array(EEM_Message::status_idle, EEM_Message::status_resend, EEM_Message::status_retry),
-                    ),
-                ),
-            )
-        );
-        $sent_queue = false;
-        if ($messages) {
-            $sent_queue = self::$_MSG_PROCESSOR->batch_send_from_queue($messages);
-        }
-
-        if (! $sent_queue instanceof EE_Messages_Queue) {
-            EE_Error::add_error(
-                __(
-                    'The messages were not sent. This could mean there is already a batch being sent on a separate request, or because the selected messages are not sendable. Please wait a minute or two and try again.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        } else {
-            // can count how many sent by using the messages in the queue
-            $sent_count = $sent_queue->count_STS_in_queue(EEM_Message::instance()->stati_indicating_sent());
-            if ($sent_count > 0) {
-                EE_Error::add_success(
-                    sprintf(
-                        _n(
-                            'There was %d message successfully sent.',
-                            'There were %d messages successfully sent.',
-                            $sent_count,
-                            'event_espresso'
-                        ),
-                        $sent_count
-                    )
-                );
-            } else {
-                EE_Error::overwrite_errors();
-                EE_Error::add_error(
-                    __(
-                        'No message was sent because of problems with sending. Either all the messages you selected were not a sendable message, they were ALREADY sent on a different scheduled task, or there was an error.
+				exit;
+			}
+		}
+		return;
+	}
+
+
+	/**
+	 *  This runs when the msg_url_trigger route has initiated.
+	 *
+	 * @since 4.5.0
+	 * @param WP $WP
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public function run($WP)
+	{
+		// ensure controller is loaded
+		self::_load_controller();
+		// attempt to process message
+		try {
+			/** @type EE_Message_To_Generate_From_Request $message_to_generate */
+			$message_to_generate = EE_Registry::instance()->load_lib('Message_To_Generate_From_Request');
+			self::$_MSG_PROCESSOR->generate_and_send_now($message_to_generate);
+		} catch (EE_Error $e) {
+			$error_msg = __(
+				'Please note that a system message failed to send due to a technical issue.',
+				'event_espresso'
+			);
+			// add specific message for developers if WP_DEBUG in on
+			$error_msg .= '||' . $e->getMessage();
+			EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
+		}
+	}
+
+
+	/**
+	 * This is triggered by the 'msg_cron_trigger' route.
+	 *
+	 * @param WP $WP
+	 */
+	public function execute_batch_request($WP)
+	{
+		$this->run_cron();
+		header('HTTP/1.1 200 OK');
+		exit();
+	}
+
+
+	/**
+	 * This gets executed on wp_cron jobs or when a batch request is initiated on its own separate non regular wp
+	 * request.
+	 */
+	public function run_cron()
+	{
+		self::_load_controller();
+		// get required vars
+		$cron_type = EE_Registry::instance()->REQ->get('type');
+		$transient_key = EE_Registry::instance()->REQ->get('key');
+
+		// now let's verify transient, if not valid exit immediately
+		if (! get_transient($transient_key)) {
+			/**
+			 * trigger error so this gets in the error logs.  This is important because it happens on a non-user
+			 * request.
+			 */
+			trigger_error(esc_attr__('Invalid Request (Transient does not exist)', 'event_espresso'));
+		}
+
+		// if made it here, lets' delete the transient to keep the db clean
+		delete_transient($transient_key);
+
+		if (apply_filters('FHEE__EED_Messages__run_cron__use_wp_cron', true)) {
+			$method = 'batch_' . $cron_type . '_from_queue';
+			if (method_exists(self::$_MSG_PROCESSOR, $method)) {
+				self::$_MSG_PROCESSOR->$method();
+			} else {
+				// no matching task
+				/**
+				 * trigger error so this gets in the error logs.  This is important because it happens on a non user
+				 * request.
+				 */
+				trigger_error(
+					esc_attr(
+						sprintf(
+							__('There is no task corresponding to this route %s', 'event_espresso'),
+							$cron_type
+						)
+					)
+				);
+			}
+		}
+
+		do_action('FHEE__EED_Messages__run_cron__end');
+	}
+
+
+	/**
+	 * This is used to retrieve the template pack for the given name.
+	 * Retrieved packs are cached on the static $_TMP_PACKS array.  If there is no class matching the given name then
+	 * the default template pack is returned.
+	 *
+	 * @deprecated 4.9.0  @see EEH_MSG_Template::get_template_pack()
+	 * @param string $template_pack_name This should correspond to the dbref of the template pack (which is also used
+	 *                                   in generating the Pack class name).
+	 * @return EE_Messages_Template_Pack
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function get_template_pack($template_pack_name)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::get_template_pack($template_pack_name);
+	}
+
+
+	/**
+	 * Retrieves an array of all template packs.
+	 * Array is in the format array( 'dbref' => EE_Messages_Template_Pack )
+	 *
+	 * @deprecated 4.9.0  @see EEH_MSG_Template_Pack::get_template_pack_collection
+	 * @return EE_Messages_Template_Pack[]
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function get_template_packs()
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+
+		// for backward compat, let's make sure this returns in the same format as originally.
+		$template_pack_collection = EEH_MSG_Template::get_template_pack_collection();
+		$template_pack_collection->rewind();
+		$template_packs = array();
+		while ($template_pack_collection->valid()) {
+			$template_packs[ $template_pack_collection->current()->dbref ] = $template_pack_collection->current();
+			$template_pack_collection->next();
+		}
+		return $template_packs;
+	}
+
+
+	/**
+	 * This simply makes sure the autoloaders are registered for the EE_messages system.
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 * @throws EE_Error
+	 */
+	public static function set_autoloaders()
+	{
+		if (empty(self::$_MSG_PATHS)) {
+			self::_set_messages_paths();
+			foreach (self::$_MSG_PATHS as $path) {
+				EEH_Autoloader::register_autoloaders_for_each_file_in_folder($path);
+			}
+			// add aliases
+			EEH_Autoloader::add_alias('EE_messages', 'EE_messages');
+			EEH_Autoloader::add_alias('EE_messenger', 'EE_messenger');
+		}
+	}
+
+
+	/**
+	 * Take care of adding all the paths for the messages components to the $_MSG_PATHS property
+	 * for use by the Messages Autoloaders
+	 *
+	 * @since 4.5.0
+	 * @return void.
+	 */
+	protected static function _set_messages_paths()
+	{
+		self::$_MSG_PATHS = apply_filters(
+			'FHEE__EED_Messages___set_messages_paths___MSG_PATHS',
+			[
+				EE_LIBRARIES . 'messages/message_type',
+				EE_LIBRARIES . 'messages/messenger',
+				EE_LIBRARIES . 'messages/defaults',
+				EE_LIBRARIES . 'messages/defaults/email',
+				EE_LIBRARIES . 'messages/data_class',
+				EE_LIBRARIES . 'messages/validators',
+				EE_LIBRARIES . 'messages/validators/email',
+				EE_LIBRARIES . 'messages/validators/html',
+				EE_LIBRARIES . 'shortcodes',
+			]
+		);
+	}
+
+
+	/**
+	 * Takes care of loading dependencies
+	 *
+	 * @since 4.5.0
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected static function _load_controller()
+	{
+		if (! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
+			EE_Registry::instance()->load_core('Request_Handler');
+			self::set_autoloaders();
+			self::$_EEMSG = EE_Registry::instance()->load_lib('messages');
+			self::$_MSG_PROCESSOR = EE_Registry::instance()->load_lib('Messages_Processor');
+			self::$_message_resource_manager = EE_Registry::instance()->load_lib('Message_Resource_Manager');
+		}
+	}
+
+
+	/**
+	 * @param EE_Transaction $transaction
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function payment_reminder(EE_Transaction $transaction)
+	{
+		self::_load_controller();
+		$data = array($transaction, null);
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('payment_reminder', $data);
+	}
+
+
+	/**
+	 * Any messages triggers for after successful gateway payments should go in here.
+	 *
+	 * @param EE_Transaction  $transaction object
+	 * @param EE_Payment|null $payment     object
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function payment(EE_Transaction $transaction, EE_Payment $payment = null)
+	{
+		// if there's no payment object, then we cannot do a payment type message!
+		if (! $payment instanceof EE_Payment) {
+			return;
+		}
+		self::_load_controller();
+		$data = array($transaction, $payment);
+		EE_Registry::instance()->load_helper('MSG_Template');
+		$message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
+		// if payment amount is less than 0 then switch to payment_refund message type.
+		$message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
+	}
+
+
+	/**
+	 * @param EE_Transaction $transaction
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function cancelled_registration(EE_Transaction $transaction)
+	{
+		self::_load_controller();
+		$data = array($transaction, null);
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('cancelled_registration', $data);
+	}
+
+
+	/**
+	 * Trigger for Registration messages
+	 * Note that what registration message type is sent depends on what the reg status is for the registrations on the
+	 * incoming transaction.
+	 *
+	 * @param EE_Registration $registration
+	 * @param array           $extra_details
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 * @throws EntityNotFoundException
+	 */
+	public static function maybe_registration(EE_Registration $registration, $extra_details = array())
+	{
+
+		if (! self::_verify_registration_notification_send($registration, $extra_details)) {
+			// no messages please
+			return;
+		}
+
+		// get all non-trashed registrations so we make sure we send messages for the right status.
+		$all_registrations = $registration->transaction()->registrations(
+			array(
+				array('REG_deleted' => false),
+				'order_by' => array(
+					'Event.EVT_name'     => 'ASC',
+					'Attendee.ATT_lname' => 'ASC',
+					'Attendee.ATT_fname' => 'ASC',
+				),
+			)
+		);
+		// cached array of statuses so we only trigger messages once per status.
+		$statuses_sent = array();
+		self::_load_controller();
+		$mtgs = array();
+
+		// loop through registrations and trigger messages once per status.
+		foreach ($all_registrations as $reg) {
+			// already triggered?
+			if (in_array($reg->status_ID(), $statuses_sent)) {
+				continue;
+			}
+
+			$message_type = EEH_MSG_Template::convert_reg_status_to_message_type($reg->status_ID());
+			$mtgs = array_merge(
+				$mtgs,
+				self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
+					$message_type,
+					array($registration->transaction(), null, $reg->status_ID())
+				)
+			);
+			$statuses_sent[] = $reg->status_ID();
+		}
+
+		if (count($statuses_sent) > 1) {
+			$mtgs = array_merge(
+				$mtgs,
+				self::$_MSG_PROCESSOR->setup_mtgs_for_all_active_messengers(
+					'registration_summary',
+					array($registration->transaction(), null)
+				)
+			);
+		}
+
+		// batch queue and initiate request
+		self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($mtgs);
+		self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
+	}
+
+
+	/**
+	 * This is a helper method used to very whether a registration notification should be sent or
+	 * not.  Prevents duplicate notifications going out for registration context notifications.
+	 *
+	 * @param EE_Registration $registration  [description]
+	 * @param array           $extra_details [description]
+	 * @return bool          true = send away, false = nope halt the presses.
+	 */
+	protected static function _verify_registration_notification_send(
+		EE_Registration $registration,
+		$extra_details = array()
+	) {
+		if (! $registration->is_primary_registrant()) {
+			return false;
+		}
+		// first we check if we're in admin and not doing front ajax
+		if (is_admin() && ! EE_FRONT_AJAX) {
+			// make sure appropriate admin params are set for sending messages
+			if (empty($_REQUEST['txn_reg_status_change']['send_notifications'])
+				|| ! absint($_REQUEST['txn_reg_status_change']['send_notifications'])
+			) {
+				// no messages sent please.
+				return false;
+			}
+		} else {
+			// frontend request (either regular or via AJAX)
+			// TXN is NOT finalized ?
+			if (! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
+				return false;
+			}
+			// return visit but nothing changed ???
+			if (isset($extra_details['revisit'], $extra_details['status_updates']) &&
+				$extra_details['revisit'] && ! $extra_details['status_updates']
+			) {
+				return false;
+			}
+			// NOT sending messages && reg status is something other than "Not-Approved"
+			if (! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
+				$registration->status_ID() !== EEM_Registration::status_id_not_approved
+			) {
+				return false;
+			}
+		}
+		// release the kraken
+		return true;
+	}
+
+
+	/**
+	 * Simply returns an array indexed by Registration Status ID and the related message_type name associated with that
+	 * status id.
+	 *
+	 * @deprecated 4.9.0  Use EEH_MSG_Template::reg_status_to_message_type_array()
+	 *                    or EEH_MSG_Template::convert_reg_status_to_message_type
+	 * @param string $reg_status
+	 * @return array
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected static function _get_reg_status_array($reg_status = '')
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
+			? EEH_MSG_Template::convert_reg_status_to_message_type($reg_status)
+			: EEH_MSG_Template::reg_status_to_message_type_array();
+	}
+
+
+	/**
+	 * Simply returns the payment message type for the given payment status.
+	 *
+	 * @deprecated 4.9.0 Use EEH_MSG_Template::payment_status_to_message_type_array
+	 *                   or EEH_MSG_Template::convert_payment_status_to_message_type
+	 * @param string $payment_status The payment status being matched.
+	 * @return bool|string The payment message type slug matching the status or false if no match.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	protected static function _get_payment_message_type($payment_status)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		return EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
+			? EEH_MSG_Template::convert_payment_status_to_message_type($payment_status)
+			: false;
+	}
+
+
+	/**
+	 * Message triggers for a resending already sent message(s) (via EE_Message list table)
+	 *
+	 * @access public
+	 * @param array $req_data This is the $_POST & $_GET data sent from EE_Admin Pages
+	 * @return bool success/fail
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function process_resend($req_data)
+	{
+		self::_load_controller();
+
+		// if $msgID in this request then skip to the new resend_message
+		if (EE_Registry::instance()->REQ->get('MSG_ID')) {
+			return self::resend_message();
+		}
+
+		// make sure any incoming request data is set on the REQ so that it gets picked up later.
+		$req_data = (array) $req_data;
+		foreach ($req_data as $request_key => $request_value) {
+			EE_Registry::instance()->REQ->set($request_key, $request_value);
+		}
+
+		if (! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request(
+		)) {
+			return false;
+		}
+
+		try {
+			self::$_MSG_PROCESSOR->batch_queue_for_generation_and_persist($messages_to_send);
+			self::$_MSG_PROCESSOR->get_queue()->initiate_request_by_priority();
+		} catch (EE_Error $e) {
+			EE_Error::add_error($e->getMessage(), __FILE__, __FUNCTION__, __LINE__);
+			return false;
+		}
+		EE_Error::add_success(
+			__('Messages have been successfully queued for generation and sending.', 'event_espresso')
+		);
+		return true; // everything got queued.
+	}
+
+
+	/**
+	 * Message triggers for a resending already sent message(s) (via EE_Message list table)
+	 *
+	 * @return bool
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function resend_message()
+	{
+		self::_load_controller();
+
+		$msgID = EE_Registry::instance()->REQ->get('MSG_ID');
+		if (! $msgID) {
+			EE_Error::add_error(
+				__(
+					'Something went wrong because there is no "MSG_ID" value in the request',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+			return false;
+		}
+
+		self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send((array) $msgID);
+
+		// setup success message.
+		$count_ready_for_resend = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
+		EE_Error::add_success(
+			sprintf(
+				_n(
+					'There was %d message queued for resending.',
+					'There were %d messages queued for resending.',
+					$count_ready_for_resend,
+					'event_espresso'
+				),
+				$count_ready_for_resend
+			)
+		);
+		return true;
+	}
+
+
+	/**
+	 * Message triggers for manual payment applied by admin
+	 *
+	 * @param  EE_Payment $payment EE_payment object
+	 * @return bool success/fail
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function process_admin_payment(EE_Payment $payment)
+	{
+		EE_Registry::instance()->load_helper('MSG_Template');
+		// we need to get the transaction object
+		$transaction = $payment->transaction();
+		if ($transaction instanceof EE_Transaction) {
+			$data = array($transaction, $payment);
+			$message_type = EEH_MSG_Template::convert_payment_status_to_message_type($payment->STS_ID());
+
+			// if payment amount is less than 0 then switch to payment_refund message type.
+			$message_type = $payment->amount() < 0 ? 'payment_refund' : $message_type;
+
+			// if payment_refund is selected, but the status is NOT accepted.  Then change message type to false so NO message notification goes out.
+			$message_type = $message_type == 'payment_refund' && $payment->STS_ID() != EEM_Payment::status_id_approved
+				? false : $message_type;
+
+			self::_load_controller();
+
+			self::$_MSG_PROCESSOR->generate_for_all_active_messengers($message_type, $data);
+
+			// get count of queued for generation
+			$count_to_generate = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(
+				array(
+					EEM_Message::status_incomplete,
+					EEM_Message::status_idle,
+				)
+			);
+
+			if ($count_to_generate > 0 && self::$_MSG_PROCESSOR->get_queue()->get_message_repository()->count() !== 0) {
+				add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
+				return true;
+			} else {
+				$count_failed = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(
+					EEM_Message::instance()->stati_indicating_failed_sending()
+				);
+				/**
+				 * Verify that there are actually errors.  If not then we return a success message because the queue might have been emptied due to successful
+				 * IMMEDIATE generation.
+				 */
+				if ($count_failed > 0) {
+					EE_Error::add_error(
+						sprintf(
+							_n(
+								'The payment notification generation failed.',
+								'%d payment notifications failed being sent.',
+								$count_failed,
+								'event_espresso'
+							),
+							$count_failed
+						),
+						__FILE__,
+						__FUNCTION__,
+						__LINE__
+					);
+
+					return false;
+				} else {
+					add_filter('FHEE__EE_Admin_Page___process_admin_payment_notification__success', '__return_true');
+					return true;
+				}
+			}
+		} else {
+			EE_Error::add_error(
+				'Unable to generate the payment notification because the given value for the transaction is invalid.',
+				'event_espresso'
+			);
+			return false;
+		}
+	}
+
+
+	/**
+	 * Callback for AHEE__Extend_Registrations_Admin_Page___newsletter_selected_send_with_registrations trigger
+	 *
+	 * @since   4.3.0
+	 * @param  EE_Registration[] $registrations an array of EE_Registration objects
+	 * @param  int               $grp_id        a specific message template group id.
+	 * @return void
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function send_newsletter_message($registrations, $grp_id)
+	{
+		// make sure mtp is id and set it in the EE_Request Handler later messages setup.
+		EE_Registry::instance()->REQ->set('GRP_ID', (int) $grp_id);
+		self::_load_controller();
+		self::$_MSG_PROCESSOR->generate_for_all_active_messengers('newsletter', $registrations);
+	}
+
+
+	/**
+	 * Callback for FHEE__EE_Registration__invoice_url__invoice_url or FHEE__EE_Registration__receipt_url__receipt_url
+	 *
+	 * @since   4.3.0
+	 * @param    string          $registration_message_trigger_url
+	 * @param    EE_Registration $registration
+	 * @param string             $messenger
+	 * @param string             $message_type
+	 * @return string
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function registration_message_trigger_url(
+		$registration_message_trigger_url,
+		EE_Registration $registration,
+		$messenger = 'html',
+		$message_type = 'invoice'
+	) {
+		// whitelist $messenger
+		switch ($messenger) {
+			case 'pdf':
+				$sending_messenger = 'pdf';
+				$generating_messenger = 'html';
+				break;
+			case 'html':
+			default:
+				$sending_messenger = 'html';
+				$generating_messenger = 'html';
+				break;
+		}
+		// whitelist $message_type
+		switch ($message_type) {
+			case 'receipt':
+				$message_type = 'receipt';
+				break;
+			case 'invoice':
+			default:
+				$message_type = 'invoice';
+				break;
+		}
+		// verify that both the messenger AND the message type are active
+		if (EEH_MSG_Template::is_messenger_active($sending_messenger)
+			&& EEH_MSG_Template::is_mt_active($message_type)
+		) {
+			// need to get the correct message template group for this (i.e. is there a custom invoice for the event this registration is registered for?)
+			$template_query_params = array(
+				'MTP_is_active'    => true,
+				'MTP_messenger'    => $generating_messenger,
+				'MTP_message_type' => $message_type,
+				'Event.EVT_ID'     => $registration->event_ID(),
+			);
+			// get the message template group.
+			$msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
+			// if we don't have an EE_Message_Template_Group then return
+			if (! $msg_template_group instanceof EE_Message_Template_Group) {
+				// remove EVT_ID from query params so that global templates get picked up
+				unset($template_query_params['Event.EVT_ID']);
+				// get global template as the fallback
+				$msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
+			}
+			// if we don't have an EE_Message_Template_Group then return
+			if (! $msg_template_group instanceof EE_Message_Template_Group) {
+				return '';
+			}
+			// generate the URL
+			$registration_message_trigger_url = EEH_MSG_Template::generate_url_trigger(
+				$sending_messenger,
+				$generating_messenger,
+				'purchaser',
+				$message_type,
+				$registration,
+				$msg_template_group->ID(),
+				$registration->transaction_ID()
+			);
+		}
+		return $registration_message_trigger_url;
+	}
+
+
+	/**
+	 * Use to generate and return a message preview!
+	 *
+	 * @param  string $type      This should correspond with a valid message type
+	 * @param  string $context   This should correspond with a valid context for the message type
+	 * @param  string $messenger This should correspond with a valid messenger.
+	 * @param bool    $send      true we will do a test send using the messenger delivery, false we just do a regular
+	 *                           preview
+	 * @return bool|string The body of the message or if send is requested, sends.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function preview_message($type, $context, $messenger, $send = false)
+	{
+		self::_load_controller();
+		$mtg = new EE_Message_To_Generate(
+			$messenger,
+			$type,
+			array(),
+			$context,
+			true
+		);
+		$generated_preview_queue = self::$_MSG_PROCESSOR->generate_for_preview($mtg, $send);
+		if ($generated_preview_queue instanceof EE_Messages_Queue) {
+			// loop through all content for the preview and remove any persisted records.
+			$content = '';
+			foreach ($generated_preview_queue->get_message_repository() as $message) {
+				$content = $message->content();
+				if ($message->ID() > 0 && $message->STS_ID() !== EEM_Message::status_failed) {
+					$message->delete();
+				}
+			}
+			return $content;
+		} else {
+			return $generated_preview_queue;
+		}
+	}
+
+
+	/**
+	 * This is a method that allows for sending a message using a messenger matching the string given and the provided
+	 * EE_Message_Queue object.  The EE_Message_Queue object is used to create a single aggregate EE_Message via the
+	 * content found in the EE_Message objects in the queue.
+	 *
+	 * @since 4.9.0
+	 * @param string            $messenger            a string matching a valid active messenger in the system
+	 * @param string            $message_type         Although it seems contrary to the name of the method, a message
+	 *                                                type name is still required to send along the message type to the
+	 *                                                messenger because this is used for determining what specific
+	 *                                                variations might be loaded for the generated message.
+	 * @param EE_Messages_Queue $queue
+	 * @param string            $custom_subject       Can be used to set what the custom subject string will be on the
+	 *                                                aggregate EE_Message object.
+	 * @return bool success or fail.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws ReflectionException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 */
+	public static function send_message_with_messenger_only(
+		$messenger,
+		$message_type,
+		EE_Messages_Queue $queue,
+		$custom_subject = ''
+	) {
+		self::_load_controller();
+		/** @type EE_Message_To_Generate_From_Queue $message_to_generate */
+		$message_to_generate = EE_Registry::instance()->load_lib(
+			'Message_To_Generate_From_Queue',
+			array(
+				$messenger,
+				$message_type,
+				$queue,
+				$custom_subject,
+			)
+		);
+		return self::$_MSG_PROCESSOR->queue_for_sending($message_to_generate);
+	}
+
+
+	/**
+	 * Generates Messages immediately for EE_Message IDs (but only for the correct status for generation)
+	 *
+	 * @since 4.9.0
+	 * @param array $message_ids An array of message ids
+	 * @return bool|EE_Messages_Queue false if nothing was generated, EE_Messages_Queue containing generated
+	 *                           messages.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function generate_now($message_ids)
+	{
+		self::_load_controller();
+		$messages = EEM_Message::instance()->get_all(
+			array(
+				0 => array(
+					'MSG_ID' => array('IN', $message_ids),
+					'STS_ID' => EEM_Message::status_incomplete,
+				),
+			)
+		);
+		$generated_queue = false;
+		if ($messages) {
+			$generated_queue = self::$_MSG_PROCESSOR->batch_generate_from_queue($messages);
+		}
+
+		if (! $generated_queue instanceof EE_Messages_Queue) {
+			EE_Error::add_error(
+				__(
+					'The messages were not generated. This could mean there is already a batch being generated on a separate request, or because the selected messages are not ready for generation. Please wait a minute or two and try again.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return $generated_queue;
+	}
+
+
+	/**
+	 * Sends messages immediately for the incoming message_ids that have the status of EEM_Message::status_resend or,
+	 * EEM_Message::status_idle
+	 *
+	 * @since 4.9.0
+	 * @param $message_ids
+	 * @return bool|EE_Messages_Queue false if no messages sent.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function send_now($message_ids)
+	{
+		self::_load_controller();
+		$messages = EEM_Message::instance()->get_all(
+			array(
+				0 => array(
+					'MSG_ID' => array('IN', $message_ids),
+					'STS_ID' => array(
+						'IN',
+						array(EEM_Message::status_idle, EEM_Message::status_resend, EEM_Message::status_retry),
+					),
+				),
+			)
+		);
+		$sent_queue = false;
+		if ($messages) {
+			$sent_queue = self::$_MSG_PROCESSOR->batch_send_from_queue($messages);
+		}
+
+		if (! $sent_queue instanceof EE_Messages_Queue) {
+			EE_Error::add_error(
+				__(
+					'The messages were not sent. This could mean there is already a batch being sent on a separate request, or because the selected messages are not sendable. Please wait a minute or two and try again.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		} else {
+			// can count how many sent by using the messages in the queue
+			$sent_count = $sent_queue->count_STS_in_queue(EEM_Message::instance()->stati_indicating_sent());
+			if ($sent_count > 0) {
+				EE_Error::add_success(
+					sprintf(
+						_n(
+							'There was %d message successfully sent.',
+							'There were %d messages successfully sent.',
+							$sent_count,
+							'event_espresso'
+						),
+						$sent_count
+					)
+				);
+			} else {
+				EE_Error::overwrite_errors();
+				EE_Error::add_error(
+					__(
+						'No message was sent because of problems with sending. Either all the messages you selected were not a sendable message, they were ALREADY sent on a different scheduled task, or there was an error.
 					If there was an error, you can look at the messages in the message activity list table for any error messages.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        }
-        return $sent_queue;
-    }
-
-
-    /**
-     * Generate and send immediately from the given $message_ids
-     *
-     * @param array $message_ids EE_Message entity ids.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function generate_and_send_now(array $message_ids)
-    {
-        $generated_queue = self::generate_now($message_ids);
-        // now let's just trigger sending immediately from this queue.
-        $messages_sent = $generated_queue instanceof EE_Messages_Queue
-            ? $generated_queue->execute()
-            : 0;
-        if ($messages_sent) {
-            EE_Error::add_success(
-                esc_html(
-                    sprintf(
-                        _n(
-                            'There was %d message successfully generated and sent.',
-                            'There were %d messages successfully generated and sent.',
-                            $messages_sent,
-                            'event_espresso'
-                        ),
-                        $messages_sent
-                    )
-                )
-            );
-            // errors would be added via the generate_now method.
-        }
-    }
-
-
-    /**
-     * This will queue the incoming message ids for resending.
-     * Note, only message_ids corresponding to messages with the status of EEM_Message::sent will be queued.
-     *
-     * @since 4.9.0
-     * @param array $message_ids An array of EE_Message IDs
-     * @return bool true means messages were successfully queued for resending, false means none were queued for
-     *                           resending.
-     * @throws EE_Error
-     * @throws InvalidArgumentException
-     * @throws InvalidDataTypeException
-     * @throws InvalidInterfaceException
-     * @throws ReflectionException
-     */
-    public static function queue_for_resending($message_ids)
-    {
-        self::_load_controller();
-        self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send($message_ids);
-
-        // get queue and count
-        $queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
-
-        if ($queue_count > 0
-        ) {
-            EE_Error::add_success(
-                sprintf(
-                    _n(
-                        '%d message successfully queued for resending.',
-                        '%d messages successfully queued for resending.',
-                        $queue_count,
-                        'event_espresso'
-                    ),
-                    $queue_count
-                )
-            );
-            /**
-             * @see filter usage in EE_Messages_Queue::initiate_request_by_priority
-             */
-        } elseif (apply_filters('FHEE__EE_Messages_Processor__initiate_request_by_priority__do_immediate_processing', true)
-            || EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request
-        ) {
-            $queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_sent);
-            if ($queue_count > 0) {
-                EE_Error::add_success(
-                    sprintf(
-                        _n(
-                            '%d message successfully sent.',
-                            '%d messages successfully sent.',
-                            $queue_count,
-                            'event_espresso'
-                        ),
-                        $queue_count
-                    )
-                );
-            } else {
-                EE_Error::add_error(
-                    __(
-                        'No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
-                        'event_espresso'
-                    ),
-                    __FILE__,
-                    __FUNCTION__,
-                    __LINE__
-                );
-            }
-        } else {
-            EE_Error::add_error(
-                __(
-                    'No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
-                    'event_espresso'
-                ),
-                __FILE__,
-                __FUNCTION__,
-                __LINE__
-            );
-        }
-        return (bool) $queue_count;
-    }
-
-
-    /**
-     * debug
-     *
-     * @param string          $class
-     * @param string          $func
-     * @param string          $line
-     * @param \EE_Transaction $transaction
-     * @param array           $info
-     * @param bool            $display_request
-     * @throws EE_Error
-     * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
-     */
-    protected static function log(
-        $class = '',
-        $func = '',
-        $line = '',
-        EE_Transaction $transaction,
-        $info = array(),
-        $display_request = false
-    ) {
-        if (defined('EE_DEBUG') && EE_DEBUG) {
-            if ($transaction instanceof EE_Transaction) {
-                // don't serialize objects
-                $info = EEH_Debug_Tools::strip_objects($info);
-                $info['TXN_status'] = $transaction->status_ID();
-                $info['TXN_reg_steps'] = $transaction->reg_steps();
-                if ($transaction->ID()) {
-                    $index = 'EE_Transaction: ' . $transaction->ID();
-                    EEH_Debug_Tools::log($class, $func, $line, $info, $display_request, $index);
-                }
-            }
-        }
-    }
-
-
-    /**
-     *  Resets all the static properties in this class when called.
-     */
-    public static function reset()
-    {
-        self::$_EEMSG = null;
-        self::$_message_resource_manager = null;
-        self::$_MSG_PROCESSOR = null;
-        self::$_MSG_PATHS = null;
-        self::$_TMP_PACKS = array();
-    }
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		}
+		return $sent_queue;
+	}
+
+
+	/**
+	 * Generate and send immediately from the given $message_ids
+	 *
+	 * @param array $message_ids EE_Message entity ids.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function generate_and_send_now(array $message_ids)
+	{
+		$generated_queue = self::generate_now($message_ids);
+		// now let's just trigger sending immediately from this queue.
+		$messages_sent = $generated_queue instanceof EE_Messages_Queue
+			? $generated_queue->execute()
+			: 0;
+		if ($messages_sent) {
+			EE_Error::add_success(
+				esc_html(
+					sprintf(
+						_n(
+							'There was %d message successfully generated and sent.',
+							'There were %d messages successfully generated and sent.',
+							$messages_sent,
+							'event_espresso'
+						),
+						$messages_sent
+					)
+				)
+			);
+			// errors would be added via the generate_now method.
+		}
+	}
+
+
+	/**
+	 * This will queue the incoming message ids for resending.
+	 * Note, only message_ids corresponding to messages with the status of EEM_Message::sent will be queued.
+	 *
+	 * @since 4.9.0
+	 * @param array $message_ids An array of EE_Message IDs
+	 * @return bool true means messages were successfully queued for resending, false means none were queued for
+	 *                           resending.
+	 * @throws EE_Error
+	 * @throws InvalidArgumentException
+	 * @throws InvalidDataTypeException
+	 * @throws InvalidInterfaceException
+	 * @throws ReflectionException
+	 */
+	public static function queue_for_resending($message_ids)
+	{
+		self::_load_controller();
+		self::$_MSG_PROCESSOR->setup_messages_from_ids_and_send($message_ids);
+
+		// get queue and count
+		$queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_resend);
+
+		if ($queue_count > 0
+		) {
+			EE_Error::add_success(
+				sprintf(
+					_n(
+						'%d message successfully queued for resending.',
+						'%d messages successfully queued for resending.',
+						$queue_count,
+						'event_espresso'
+					),
+					$queue_count
+				)
+			);
+			/**
+			 * @see filter usage in EE_Messages_Queue::initiate_request_by_priority
+			 */
+		} elseif (apply_filters('FHEE__EE_Messages_Processor__initiate_request_by_priority__do_immediate_processing', true)
+			|| EE_Registry::instance()->NET_CFG->core->do_messages_on_same_request
+		) {
+			$queue_count = self::$_MSG_PROCESSOR->get_queue()->count_STS_in_queue(EEM_Message::status_sent);
+			if ($queue_count > 0) {
+				EE_Error::add_success(
+					sprintf(
+						_n(
+							'%d message successfully sent.',
+							'%d messages successfully sent.',
+							$queue_count,
+							'event_espresso'
+						),
+						$queue_count
+					)
+				);
+			} else {
+				EE_Error::add_error(
+					__(
+						'No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
+						'event_espresso'
+					),
+					__FILE__,
+					__FUNCTION__,
+					__LINE__
+				);
+			}
+		} else {
+			EE_Error::add_error(
+				__(
+					'No messages were queued for resending. This usually only happens when all the messages flagged for resending are not a status that can be resent.',
+					'event_espresso'
+				),
+				__FILE__,
+				__FUNCTION__,
+				__LINE__
+			);
+		}
+		return (bool) $queue_count;
+	}
+
+
+	/**
+	 * debug
+	 *
+	 * @param string          $class
+	 * @param string          $func
+	 * @param string          $line
+	 * @param \EE_Transaction $transaction
+	 * @param array           $info
+	 * @param bool            $display_request
+	 * @throws EE_Error
+	 * @throws \EventEspresso\core\exceptions\InvalidSessionDataException
+	 */
+	protected static function log(
+		$class = '',
+		$func = '',
+		$line = '',
+		EE_Transaction $transaction,
+		$info = array(),
+		$display_request = false
+	) {
+		if (defined('EE_DEBUG') && EE_DEBUG) {
+			if ($transaction instanceof EE_Transaction) {
+				// don't serialize objects
+				$info = EEH_Debug_Tools::strip_objects($info);
+				$info['TXN_status'] = $transaction->status_ID();
+				$info['TXN_reg_steps'] = $transaction->reg_steps();
+				if ($transaction->ID()) {
+					$index = 'EE_Transaction: ' . $transaction->ID();
+					EEH_Debug_Tools::log($class, $func, $line, $info, $display_request, $index);
+				}
+			}
+		}
+	}
+
+
+	/**
+	 *  Resets all the static properties in this class when called.
+	 */
+	public static function reset()
+	{
+		self::$_EEMSG = null;
+		self::$_message_resource_manager = null;
+		self::$_MSG_PROCESSOR = null;
+		self::$_MSG_PATHS = null;
+		self::$_TMP_PACKS = array();
+	}
 }

Spacing +27 added lines, -27 removed lines

@@ -202,7 +202,7 @@ 
                 'event_espresso'
             );
             // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
+            $error_msg .= '||'.$e->getMessage();
             EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
         }
     }
@@ -289,7 +289,7 @@ 
                 'event_espresso'
             );
             // add specific message for developers if WP_DEBUG in on
-            $error_msg .= '||' . $e->getMessage();
+            $error_msg .= '||'.$e->getMessage();
             EE_Error::add_error($error_msg, __FILE__, __FUNCTION__, __LINE__);
         }
     }
@@ -320,7 +320,7 @@ 
         $transient_key = EE_Registry::instance()->REQ->get('key');
 
         // now let's verify transient, if not valid exit immediately
-        if (! get_transient($transient_key)) {
+        if ( ! get_transient($transient_key)) {
             /**
              * trigger error so this gets in the error logs.  This is important because it happens on a non-user
              * request.
@@ -332,7 +332,7 @@ 
         delete_transient($transient_key);
 
         if (apply_filters('FHEE__EED_Messages__run_cron__use_wp_cron', true)) {
-            $method = 'batch_' . $cron_type . '_from_queue';
+            $method = 'batch_'.$cron_type.'_from_queue';
             if (method_exists(self::$_MSG_PROCESSOR, $method)) {
                 self::$_MSG_PROCESSOR->$method();
             } else {
@@ -399,7 +399,7 @@ 
         $template_pack_collection->rewind();
         $template_packs = array();
         while ($template_pack_collection->valid()) {
-            $template_packs[ $template_pack_collection->current()->dbref ] = $template_pack_collection->current();
+            $template_packs[$template_pack_collection->current()->dbref] = $template_pack_collection->current();
             $template_pack_collection->next();
         }
         return $template_packs;
@@ -439,15 +439,15 @@ 
         self::$_MSG_PATHS = apply_filters(
             'FHEE__EED_Messages___set_messages_paths___MSG_PATHS',
             [
-                EE_LIBRARIES . 'messages/message_type',
-                EE_LIBRARIES . 'messages/messenger',
-                EE_LIBRARIES . 'messages/defaults',
-                EE_LIBRARIES . 'messages/defaults/email',
-                EE_LIBRARIES . 'messages/data_class',
-                EE_LIBRARIES . 'messages/validators',
-                EE_LIBRARIES . 'messages/validators/email',
-                EE_LIBRARIES . 'messages/validators/html',
-                EE_LIBRARIES . 'shortcodes',
+                EE_LIBRARIES.'messages/message_type',
+                EE_LIBRARIES.'messages/messenger',
+                EE_LIBRARIES.'messages/defaults',
+                EE_LIBRARIES.'messages/defaults/email',
+                EE_LIBRARIES.'messages/data_class',
+                EE_LIBRARIES.'messages/validators',
+                EE_LIBRARIES.'messages/validators/email',
+                EE_LIBRARIES.'messages/validators/html',
+                EE_LIBRARIES.'shortcodes',
             ]
         );
     }
@@ -466,7 +466,7 @@ 
      */
     protected static function _load_controller()
     {
-        if (! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
+        if ( ! self::$_MSG_PROCESSOR instanceof EE_Messages_Processor) {
             EE_Registry::instance()->load_core('Request_Handler');
             self::set_autoloaders();
             self::$_EEMSG = EE_Registry::instance()->load_lib('messages');
@@ -507,7 +507,7 @@ 
     public static function payment(EE_Transaction $transaction, EE_Payment $payment = null)
     {
         // if there's no payment object, then we cannot do a payment type message!
-        if (! $payment instanceof EE_Payment) {
+        if ( ! $payment instanceof EE_Payment) {
             return;
         }
         self::_load_controller();
@@ -554,7 +554,7 @@ 
     public static function maybe_registration(EE_Registration $registration, $extra_details = array())
     {
 
-        if (! self::_verify_registration_notification_send($registration, $extra_details)) {
+        if ( ! self::_verify_registration_notification_send($registration, $extra_details)) {
             // no messages please
             return;
         }
@@ -621,7 +621,7 @@ 
         EE_Registration $registration,
         $extra_details = array()
     ) {
-        if (! $registration->is_primary_registrant()) {
+        if ( ! $registration->is_primary_registrant()) {
             return false;
         }
         // first we check if we're in admin and not doing front ajax
@@ -636,7 +636,7 @@ 
         } else {
             // frontend request (either regular or via AJAX)
             // TXN is NOT finalized ?
-            if (! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
+            if ( ! isset($extra_details['finalized']) || $extra_details['finalized'] === false) {
                 return false;
             }
             // return visit but nothing changed ???
@@ -646,7 +646,7 @@ 
                 return false;
             }
             // NOT sending messages && reg status is something other than "Not-Approved"
-            if (! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
+            if ( ! apply_filters('FHEE__EED_Messages___maybe_registration__deliver_notifications', false) &&
                 $registration->status_ID() !== EEM_Registration::status_id_not_approved
             ) {
                 return false;
@@ -729,7 +729,7 @@ 
             EE_Registry::instance()->REQ->set($request_key, $request_value);
         }
 
-        if (! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request(
+        if ( ! $messages_to_send = self::$_MSG_PROCESSOR->setup_messages_to_generate_from_registration_ids_in_request(
         )) {
             return false;
         }
@@ -763,7 +763,7 @@ 
         self::_load_controller();
 
         $msgID = EE_Registry::instance()->REQ->get('MSG_ID');
-        if (! $msgID) {
+        if ( ! $msgID) {
             EE_Error::add_error(
                 __(
                     'Something went wrong because there is no "MSG_ID" value in the request',
@@ -955,14 +955,14 @@ 
             // get the message template group.
             $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
             // if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
+            if ( ! $msg_template_group instanceof EE_Message_Template_Group) {
                 // remove EVT_ID from query params so that global templates get picked up
                 unset($template_query_params['Event.EVT_ID']);
                 // get global template as the fallback
                 $msg_template_group = EEM_Message_Template_Group::instance()->get_one(array($template_query_params));
             }
             // if we don't have an EE_Message_Template_Group then return
-            if (! $msg_template_group instanceof EE_Message_Template_Group) {
+            if ( ! $msg_template_group instanceof EE_Message_Template_Group) {
                 return '';
             }
             // generate the URL
@@ -1093,7 +1093,7 @@ 
             $generated_queue = self::$_MSG_PROCESSOR->batch_generate_from_queue($messages);
         }
 
-        if (! $generated_queue instanceof EE_Messages_Queue) {
+        if ( ! $generated_queue instanceof EE_Messages_Queue) {
             EE_Error::add_error(
                 __(
                     'The messages were not generated. This could mean there is already a batch being generated on a separate request, or because the selected messages are not ready for generation. Please wait a minute or two and try again.',
@@ -1140,7 +1140,7 @@ 
             $sent_queue = self::$_MSG_PROCESSOR->batch_send_from_queue($messages);
         }
 
-        if (! $sent_queue instanceof EE_Messages_Queue) {
+        if ( ! $sent_queue instanceof EE_Messages_Queue) {
             EE_Error::add_error(
                 __(
                     'The messages were not sent. This could mean there is already a batch being sent on a separate request, or because the selected messages are not sendable. Please wait a minute or two and try again.',
@@ -1326,7 +1326,7 @@ 
                 $info['TXN_status'] = $transaction->status_ID();
                 $info['TXN_reg_steps'] = $transaction->reg_steps();
                 if ($transaction->ID()) {
-                    $index = 'EE_Transaction: ' . $transaction->ID();
+                    $index = 'EE_Transaction: '.$transaction->ID();
                     EEH_Debug_Tools::log($class, $func, $line, $info, $display_request, $index);
                 }
             }