<?php
/**
 * @author Arthur Schiwon <blizzz@owncloud.com>
 * @author Christopher Schäpers <kondou@ts.unde.re>
 * @author Joas Schilling <nickvergessen@owncloud.com>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Robin McCorkell <rmccorkell@karoshi.org.uk>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2015, ownCloud, Inc.
 * @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/>
 *
 */

interface OC_User_Interface {

	/**
	* Check if backend implements actions
	* @param int $actions bitwise-or'ed actions
	* @return boolean
	*
	* Returns the supported actions as int to be
	* compared with \OC_User_Backend::CREATE_USER etc.
	*/
	public function implementsActions($actions);

	/**
	* delete a user
	* @param string $uid The username of the user to delete
	* @return bool
	*/
	public function deleteUser($uid);

	/**
	* Get a list of all users
	* @return array an array of all uids
	*
	* Get a list of all users.
	*/
	public function getUsers($search = '', $limit = null, $offset = null);

	/**
	* check if a user exists
	* @param string $uid the username
	* @return boolean
	*/
	public function userExists($uid);

	/**
	 * get display name of the user
	 * @param string $uid user ID of the user
	 * @return string display name
	 */
	public function getDisplayName($uid);

	/**
	 * Get a list of all display names
	 * @return array an array of  all displayNames (value) and the corresponding uids (key)
	 *
	 * Get a list of all display names and user ids.
	 */
	public function getDisplayNames($search = '', $limit = null, $offset = null);

	/**
	 * Check if a user list is available or not
	 * @return boolean if users can be listed or not
	 */
	public function hasUserListings();
}