<?php
/**
 * @brief		Dashboard extension: Background Queue Progress
 * @since		27 May 2014
 */

namespace IPS\core\extensions\core\Dashboard;

/* 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;
}

/**
 * Dashboard extension: Background Queue Progress
 */
class _BackgroundQueue
{
	/**
	* Can the current user view this dashboard item?
	*
	* @return	bool
	*/
	public function canView()
	{
		return TRUE;
	}

	/**
	 * Return the block to show on the dashboard
	 *
	 * @return	string
	 */
	public function getBlock()
	{
		$rows = array();

		$select = \IPS\Db::i()->select( '*', 'core_queue', array( 'app_enabled=?', 1 ), 'priority ASC, date ASC', array( 0, 100 ) )->join( 'core_applications', "app=app_directory" );
		$totalCount = \IPS\Db::i()->select( 'count(*)', 'core_queue', array( 'app_enabled=?', 1 ) )->join( 'core_applications', "app=app_directory" )->first();
		if ( \count( $select ) )
		{
			foreach ( $select as $queueData )
			{
				$extensions = \IPS\Application::load( $queueData['app'] )->extensions( 'core', 'Queue', FALSE );
				if ( isset( $extensions[ $queueData['key'] ] ) )
				{
					try
					{
						$class = new $extensions[ $queueData['key'] ];
						$rows[] = $class->getProgress( json_decode( $queueData['data'], TRUE ), $queueData['offset'] );
					}
					catch ( \OutOfRangeException $e ) { }
				}
			}			
		}

		return \IPS\Theme::i()->getTemplate( 'dashboard' )->backgroundQueue( $rows, $totalCount );
	}
}