Add comment event handler for activities

Signed-off-by: Julius Härtl <jus@bitgrid.net>

lib/Activity/CommentEventHandler.php

@@ -0,0 +1,84 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Deck\Activity;
+
+use OCA\Deck\Db\CardMapper;
+use OCP\Comments\CommentsEvent;
+use \OCP\Comments\ICommentsEventHandler;
+
+class CommentEventHandler implements ICommentsEventHandler {
+
+	/** @var ActivityManager */
+	private $activityManager;
+	/** @var CardMapper */
+	private $cardMapper;
+
+	public function __construct(ActivityManager $activityManager, CardMapper $cardMapper) {
+		$this->cardMapper = $cardMapper;
+		$this->activityManager = $activityManager;
+	}
+
+	/**
+	 * @param CommentsEvent $event
+	 */
+	public function handle(CommentsEvent $event) {
+		if($event->getComment()->getObjectType() !== 'deckCard') {
+			return;
+		}
+
+		$eventType = $event->getEvent();
+		if( $eventType === CommentsEvent::EVENT_ADD
+		) {
+			$this->notificationHandler($event);
+			$this->activityHandler($event);
+			return;
+		}
+
+		$applicableEvents = [
+			CommentsEvent::EVENT_PRE_UPDATE,
+			CommentsEvent::EVENT_UPDATE,
+			CommentsEvent::EVENT_DELETE,
+		];
+		if(in_array($eventType, $applicableEvents)) {
+			$this->notificationHandler($event);
+			return;
+		}
+	}
+
+	/**
+	 * @param CommentsEvent $event
+	 */
+	private function activityHandler(CommentsEvent $event) {
+		$comment = $event->getComment();
+		$this->activityManager->triggerEvent(ActivityManager::DECK_OBJECT_CARD, $comment, ActivityManager::SUBJECT_CARD_COMMENT_CREATE, ['comment' => $comment->getId()]);
+
+	}
+
+	/**
+	 * @param CommentsEvent $event
+	 */
+	private function notificationHandler(CommentsEvent $event) {
+
+	}
+}