nextcloud/apps/comments/lib/Listener/CommentsEntityEventListener.php

<?php

declare(strict_types=1);

/**
 * @copyright 2020 Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @author Christoph Wurst <christoph@winzerhof-wurst.at>
 *
 * @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\Comments\Listener;

use OCP\Comments\CommentsEntityEvent;
use OCP\EventDispatcher\Event;
use OCP\EventDispatcher\IEventListener;
use OCP\Files\IRootFolder;

/** @template-implements IEventListener<CommentsEntityEvent> */
class CommentsEntityEventListener implements IEventListener {
	public function __construct(
		private IRootFolder $rootFolder,
		private ?string $userId = null,
	) {
	}

	public function handle(Event $event): void {
		if (!($event instanceof CommentsEntityEvent)) {
			// Unrelated
			return;
		}

		$event->addEntityCollection('files', function ($name): bool {
			$nodes = $this->rootFolder->getUserFolder($this->userId)->getById((int)$name);
			return !empty($nodes);
		});
	}
}