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<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
 * @author Joas Schilling <coding@schilljs.com>
 * @author Morris Jobke <hey@morrisjobke.de>
 *
 * @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\User_LDAP\User;

use OCA\User_LDAP\Mapping\UserMapping;

/**
 * Class DeletedUsersIndex
 * @package OCA\User_LDAP
 */
class DeletedUsersIndex {
	/**
	 * @var \OCP\IConfig $config
	 */
	protected $config;

	/**
	 * @var \OCP\IDBConnection $db
	 */
	protected $db;

	/**
	 * @var \OCA\User_LDAP\Mapping\UserMapping $mapping
	 */
	protected $mapping;

	/**
	 * @var array $deletedUsers
	 */
	protected $deletedUsers;

	/**
	 * @param \OCP\IConfig $config
	 * @param \OCP\IDBConnection $db
	 * @param \OCA\User_LDAP\Mapping\UserMapping $mapping
	 */
	public function __construct(\OCP\IConfig $config, \OCP\IDBConnection $db, UserMapping $mapping) {
		$this->config = $config;
		$this->db = $db;
		$this->mapping = $mapping;
	}

	/**
	 * reads LDAP users marked as deleted from the database
	 * @return \OCA\User_LDAP\User\OfflineUser[]
	 */
	private function fetchDeletedUsers() {
		$deletedUsers = $this->config->getUsersForUserValue(
			'user_ldap', 'isDeleted', '1');

		$userObjects = array();
		foreach($deletedUsers as $user) {
			$userObjects[] = new OfflineUser($user, $this->config, $this->db, $this->mapping);
		}
		$this->deletedUsers = $userObjects;

		return $this->deletedUsers;
	}

	/**
	 * returns all LDAP users that are marked as deleted
	 * @return \OCA\User_LDAP\User\OfflineUser[]
	 */
	public function getUsers() {
		if(is_array($this->deletedUsers)) {
			return $this->deletedUsers;
		}
		return $this->fetchDeletedUsers();
	}

	/**
	 * whether at least one user was detected as deleted
	 * @return bool
	 */
	public function hasUsers() {
		if($this->deletedUsers === false) {
			$this->fetchDeletedUsers();
		}
		if(is_array($this->deletedUsers) && count($this->deletedUsers) > 0) {
			return true;
		}
		return false;
	}

	/**
	 * marks a user as deleted
	 * @param string $ocName
	 */
	public function markUser($ocName) {
		$this->config->setUserValue($ocName, 'user_ldap', 'isDeleted', '1');
	}
}