[WIP] email share notification should be done in the background

apps/files_sharing/lib/Service/NotificationPublisher.php

@@ -20,6 +20,7 @@
  */
 namespace OCA\Files_Sharing\Service;
 
+use OCP\BackgroundJob\IJobList;
 use OCP\IURLGenerator;
 use OCP\IUserManager;
 use OCP\IGroupManager;
@@ -117,6 +118,12 @@ public function sendNotification(IShare $share) {
 
 			$this->notificationManager->notify($notification);
 		}
+
+		/**
+		 * Finally notify users via email This task would run
+		 * as a background job.
+		 */
+		$this->notificationManager->emailNotify($share->getFullId());
 	}
 
 	/**

lib/private/Notification/Manager.php

@@ -244,6 +244,16 @@ public function notify(INotification $notification) {
 		}
 	}
 
+	/**
+	 * @param string $shareFullId
+	 * @return null
+	 */
+	public function emailNotify($shareFullId) {
+		foreach ($this->getApps() as $app) {
+			$app->emailNotify($shareFullId);
+		}
+	}
+
 	/**
 	 * @param INotification $notification
 	 * @param string $languageCode The code of the language that should be used to prepare the notification

lib/public/Notification/IApp.php

@@ -49,4 +49,12 @@ public function markProcessed(INotification $notification);
 	 * @since 9.0.0
 	 */
 	public function getCount(INotification $notification);
+
+	/**
+	 * Notification of a share to user(s) by email is achieved by background job
+	 * @param string $shareFullId
+	 * @return null
+	 * @since 10.1.0
+	 */
+	public function emailNotify($shareFullId);
 }

lib/public/Notification/IManager.php

@@ -63,4 +63,11 @@ public function createNotification();
 	 * @since 9.0.0
 	 */
 	public function hasNotifiers();
+
+	/**
+	 * @param string $shareFullId
+	 * @return null
+	 * @since 10.1.0
+	 */
+	public function emailNotify($shareFullId);
 }