<?php
  
  /**
   * ownCloud - user interface
   *
   * @author Arthur Schiwon
   * @copyright 2012 Arthur Schiwon blizzz@owncloud.org
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
   * License as published by the Free Software Foundation; either
   * version 3 of the License, or any later version.
   *
   * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  interface OC_User_Interface {
  
  	/**

  	* Check if backend implements actions

  	* @param $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();

  }