nextcloud/apps/provisioning_api/lib/Listener/UserDeletedListener.php

<?php

declare(strict_types=1);

/**
 * @copyright Copyright (c) 2020 Joas Schilling <coding@schilljs.com>
 *
 * @author Joas Schilling <coding@schilljs.com>
 *
 * @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\Provisioning_API\Listener;

use OC\KnownUser\KnownUserService;
use OCP\EventDispatcher\Event;
use OCP\EventDispatcher\IEventListener;
use OCP\User\Events\UserDeletedEvent;

/** @template-implements IEventListener<UserDeletedEvent> */
class UserDeletedListener implements IEventListener {

	/** @var KnownUserService */
	private $service;

	public function __construct(KnownUserService $service) {
		$this->service = $service;
	}

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

		$user = $event->getUser();

		// Delete all entries of this user
		$this->service->deleteKnownTo($user->getUID());

		// Delete all entries that other users know this user
		$this->service->deleteByContactUserId($user->getUID());
	}
}