<?php
/**
 * Copyright 2009, 2010, 2011, 2012 AEGEE-Europe
 *
 * This file is part of AEGEE-Europe Online Membership System.
 *
 * AEGEE-Europe Online Membership System is free software: you can
 * redistribute it and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation, either
 * version 3 of the License, or (at your option) any later version.
 *
 * AEGEE-Europe Online Membership System 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with AEGEE-Europe Online Membership System.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

/**
 * Provide default layout module
 *
 * @license		http://opensource.org/licenses/gpl-license.php GNU Public License
 */

require_once(FILESYSTEMROOTPATH."include/classes/Access.php");

class EventsAccess extends Access {
	
	/**
	 * Define All Available Accesses of the Events Project
	 *
	 */
	public static function eventsConsts() {
		$Service = $GLOBALS['ClassFactory']->getAccessService();
		$accesses = $Service->loadAll();
		foreach ( $accesses as $const => $access ){
			define(strtoupper($const),$access);
		}
	}

	/**
	 * Check if the current logged in user has a certain access level
	 *
	 * @param int requiredLevel: required access level
	 * @param string BodyCode: BodyCode the access is required for
	 * @return boolean: true in case user has required access level, false otherwise
	 */
	public static function hasAccess($requiredLevel, $BodyCode = NULL) {
		if( in_array($requiredLevel, $_SESSION['sess_access_bodyCodes']['ALL_BODIES']) ) return true;
		if( isset($_SESSION['sess_access_bodyCodes'][$BodyCode]) ) {
			if( self::isAccess($requiredLevel) ) {
		 		if( in_array($requiredLevel, $_SESSION['sess_access_bodyCodes'][$BodyCode]) ) return true;
			}
		}
		return false;
	}

	/**
	 * Check if the provided access level exists
	 *
	 * @param int access: access level
	 * @return boolean: true in case the access level exists, false otherwise
	 */
	public static function isAccess($access) {
		if ( ! is_numeric($access) ) return false;
		$accesses=array_merge(self::getAccesses(), self::getEventsAccesses());
		sort($accesses);
		return in_array($access, $accesses);
	}

	/**
	 * Register in the $_SESSION all accesses a person has for the Events Project
	 *
	 */
	public static function loadEventsAccess() {
		if( ! $_SESSION['sess_access_events_set'] ) {
			$_SESSION['sess_access_events_set']=true;
			$Service = $GLOBALS['ClassFactory']->getAccessService();
			if( is_array($_SESSION[sess_access_bodyCodes])){
				foreach ($_SESSION[sess_access_bodyCodes] as $body=>$accesses){
					foreach ($accesses as $name=>$value){
						if(Access::isAccess($value)){//register pre-defined values of the core
							$_SESSION['sess_access_bodyCodes'][$body] = array_merge($_SESSION['sess_access_bodyCodes'][$body], $Service->loadStructural($value));
						}else{
							$_SESSION['sess_access_bodyCodes'][$body] = array_merge($_SESSION['sess_access_bodyCodes'][$body], $Service->loadNonStructural($name, 0));
							$_SESSION['sess_access_bodyCodes']['ALL_BODIES'] = array_merge($_SESSION['sess_access_bodyCodes']['ALL_BODIES'], $Service->loadNonStructural($name, 1));
						}
					}
				}
			}
		}
	}

	/**
	 * Get an array of all access levels of the Events Project
	 *
	 * @return array: array of accesses
	 */
	public static function getEventsAccesses() {
		$Service = $GLOBALS['ClassFactory']->getAccessService();
		return $Service->loadAllValues();
	}
}
?>