<?php
/**
 * ownCloud
 *
 * @author Frank Karlitschek
 * @author Jakob Sack
 * @copyright 2010 Frank Karlitschek karlitschek@kde.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/>.
 *
 */

/**
 * This class is responsible for reading and writing config.php, the very basic
 * configuration file of owncloud.
 */
class OC_CONFIG{
	// associative array key => value
	private static $cache = array();

	// Is the cache filled?
	private static $init = false;

	/**
	 * @brief Lists all available config keys
	 * @returns array with key names
	 *
	 * This function returns all keys saved in config.php. Please note that it
	 * does not return the values.
	 */
	public static function getKeys(){
		// TODO: write function
		return array();
	}

	/**
	 * @brief Gets a value from config.php
	 * @param $key key
	 * @param $default = null default value
	 * @returns the value or $default
	 *
	 * This function gets the value from config.php. If it does not exist,
	 * $default will be returned.
	 */
	public static function getValue( $key, $default = null ){
		// TODO: write function
		return $default;
	}

	/**
	 * @brief Sets a value
	 * @param $key key
	 * @param $value value
	 * @returns true/false
	 *
	 * This function sets the value and writes the config.php. If the file can
	 * not be written, false will be returned.
	 */
	public static function setValue( $key, $value ){
		// TODO: write function
		return true;
	}

	/**
	 * @brief Removes a key from the config
	 * @param $key key
	 * @returns true/false
	 *
	 * This function removes a key from the config.php. If owncloud has no
	 * write access to config.php, the function will return false.
	 */
	public static function deleteKey( $key ){
		// TODO: write function
		return true;
	}
}
?>