Adjust notifier to Nextcloud 17

lib/AppInfo/Application.php

@@ -141,12 +141,7 @@ public function registerNavigationEntry() {
 
 	public function registerNotifications() {
 		$notificationManager = \OC::$server->getNotificationManager();
-		$self = &$this;
-		$notificationManager->registerNotifier(function() use (&$self) {
-			return $self->getContainer()->query(Notifier::class);
-		}, function() {
-			return ['id' => 'deck', 'name' => 'Deck'];
-		});
+		$notificationManager->registerNotifierService(Notifier::class);
 	}
 
 	/**

lib/Notification/Notifier.php

@@ -57,14 +57,34 @@ public function __construct(
 		$this->boardMapper = $boardMapper;
 	}
 
+	/**
+	 * Identifier of the notifier, only use [a-z0-9_]
+	 *
+	 * @return string
+	 * @since 17.0.0
+	 */
+	public function getID(): string {
+		return 'deck';
+	}
+
+	/**
+	 * Human readable name describing the notifier
+	 *
+	 * @return string
+	 * @since 17.0.0
+	 */
+	public function getName(): string {
+		return $this->l10nFactory->get('deck')->t('Deck');
+	}
+
 	/**
 	 * @param INotification $notification
 	 * @param string $languageCode The code of the language that should be used to prepare the notification
 	 * @return INotification
 	 * @throws \InvalidArgumentException When the notification was not prepared by a notifier
 	 * @since 9.0.0
 	 */
-	public function prepare(INotification $notification, $languageCode) {
+	public function prepare(INotification $notification, string $languageCode): INotification {
 		$l = $this->l10nFactory->get('deck', $languageCode);
 		if ($notification->getApp() !== 'deck') {
 			throw new \InvalidArgumentException();