<?php
/**
 * @brief		clearsessions Task
 *
 * @copyright	(c) 2001 - SVN_YYYY Invision Power Services, Inc.
 *
 * @package		IPS Social Suite
 * @since		29 May 2015
 * @version		SVN_VERSION_NUMBER
 */

namespace IPS\core\tasks;

/* To prevent PHP errors (extending class does not exist) revealing path */
if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
{
	header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
	exit;
}

/**
 * clearsessions Task
 */
class _clearsessions extends \IPS\Task
{
	/**
	 * Execute
	 *
	 * If ran successfully, should return anything worth logging. Only log something
	 * worth mentioning (don't log "task ran successfully"). Return NULL (actual NULL, not '' or 0) to not log (which will be most cases).
	 * If an error occurs which means the task could not finish running, throw an \IPS\Task\Exception - do not log an error as a normal log.
	 * Tasks should execute within the time of a normal HTTP request.
	 *
	 * @return	mixed	Message to log or NULL
	 * @throws	\IPS\Task\Exception
	 */
	public function execute()
	{
		$timeout = 1440;

		if( function_exists('ini_get') )
		{
			$phpTimeout = @ini_get('session.gc_maxlifetime');
			$timeout	= $phpTimeout ?: $timeout;
		}

		\IPS\Db::i()->delete( 'core_sys_cp_sessions', array( 'session_running_time<?', ( time() - $timeout ) ) );
		\IPS\Session\Front::clearSessions( $timeout );

		return NULL;
	}
	
	/**
	 * Cleanup
	 *
	 * If your task takes longer than 15 minutes to run, this method
	 * will be called before execute(). Use it to clean up anything which
	 * may not have been done
	 *
	 * @return	void
	 */
	public function cleanup()
	{
		
	}
}