<?php
	/**
	 * Elgg cron library.
	 * 
	 * @package Elgg
	 * @subpackage Core
	 * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
	 * @author Curverider Ltd
	 * @copyright Curverider Ltd 2008-2009
	 * @link http://elgg.org/
	 */

	/** The cron exception. */
	class CronException extends Exception {}

	/**
	 * Initialisation 
	 *
	 */
	function cron_init()
	{
		// Register a pagehandler for cron
		register_page_handler('cron','cron_page_handler');
	}
		
	/**
	 * Cron handler for redirecting pages.
	 *
	 * @param unknown_type $page
	 */
	function cron_page_handler($page) 
	{
		global $CONFIG;
		
		if ($page[0])
		{
			switch (strtolower($page[0]))
			{
				case 'minute' :
				case 'fiveminute' :
				case 'fifteenmin' :
				case 'halfhour' :
				case 'hourly' : 
				case 'daily'  :
				case 'weekly' :
				case 'monthly':
				case 'yearly' : 
				case 'reboot' : set_input('period', $page[0]); break; 
				default : throw new CronException(sprintf(elgg_echo('CronException:unknownperiod'), $page[0]));
			}
			
			// Include cron handler
			include($CONFIG->path . "engine/handlers/cron_handler.php");
		}
		else
			forward(); 
	}


	// Register a startup event
	register_elgg_event_handler('init','system','cron_init');	

?>