add creation time on SocialAppNotification

Signed-off-by: Maxence Lange <maxence@artificial-owl.com>

lib/Interfaces/Internal/SocialAppNotificationInterface.php

@@ -110,6 +110,9 @@ class SocialAppNotificationInterface implements IActivityPubInterface {
 			return;
 		}
 
+		$notification->setPublished(date("c"));
+		$notification->convertPublished();
+
 		$this->miscService->log('Generating notification: ' . json_encode($notification, JSON_UNESCAPED_SLASHES), 1);
 		$this->streamRequest->save($notification);
 	}

lib/Interfaces/Object/FollowInterface.php

@@ -254,13 +254,15 @@ class FollowInterface implements IActivityPubInterface {
 	 * @param Follow $follow
 	 *
 	 * @throws ItemUnknownException
+	 * @throws SocialAppConfigException
 	 */
 	private function generateNotification(Follow $follow) {
 		/** @var SocialAppNotificationInterface $notificationInterface */
 		$notificationInterface =
 			AP::$activityPub->getInterfaceFromType(SocialAppNotification::TYPE);
 
-		$notification = new SocialAppNotification();
+		/** @var SocialAppNotification $notification */
+		$notification = AP::$activityPub->getItemFromType(SocialAppNotification::TYPE);
 		$notification->setAttributedTo($follow->getActorId())
 					 ->setId($follow->getId() . '/notification')
 					 ->setSummary('{actor} is following you')