owncloud/core

<?php
/**
 * @author Joas Schilling <coding@schilljs.com>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Victor Dubiniuk <dubiniuk@owncloud.com>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OCA\Files_Versions\BackgroundJob;

use OCA\Files_Versions\AppInfo\Application;
use OCA\Files_Versions\Expiration;
use OCA\Files_Versions\Storage;
use OCP\IUser;
use OCP\IUserManager;

class ExpireVersions extends \OC\BackgroundJob\TimedJob {
    public const ITEMS_PER_SESSION = 1000;

    /**
     * @var Expiration
     */
    private $expiration;
    
    /**
     * @var IUserManager
     */
    private $userManager;

    public function __construct(IUserManager $userManager = null, Expiration $expiration = null) {
        // Run once per 30 minutes
        $this->setInterval(60 * 30);

        if ($expiration === null || $userManager === null) {
            $this->fixDIForJobs();
        } else {
            $this->expiration = $expiration;
            $this->userManager = $userManager;
        }
    }

    protected function fixDIForJobs() {
        $application = new Application();
        $this->expiration = $application->getContainer()->query('Expiration');
        $this->userManager = \OC::$server->getUserManager();
    }

    protected function run($argument) {
        $maxAge = $this->expiration->getMaxAgeAsTimestamp();
        if (!$maxAge) {
            return;
        }

        $this->userManager->callForSeenUsers(function (IUser $user) {
            $uid = $user->getUID();
            if (!$this->setupFS($uid)) {
                return;
            }
            Storage::expireOlderThanMaxForUser($uid);
        });
    }

    /**
     * Act on behalf on trash item owner
     * @param string $user
     * @return boolean
     */
    protected function setupFS($user) {
        \OC_Util::tearDownFS();
        \OC_Util::setupFS($user, false);

        // Check if this user has a versions directory
        $view = new \OC\Files\View('/' . $user);
        if (!$view->is_dir('/files_versions')) {
            return false;
        }

        return true;
    }
}