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<?php
/**
 * @version		$Id$
 * @package		Google Tracking
 * @subpackage	Module
 * @author		Michal Unzeitig, ARTIO s.r.o.
 * @copyright	Copyright (C) 2009 ARTIO s.r.o., All rights reserved.
 * @license		GNU/GPL
 */
// security check
defined('_JEXEC') or die('Restricted access');
 
class plgSystemGACode extends JPlugin
{
 
	private $script1 = 
	"	var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
	document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));";
	private $script2 = 
	"	try {
		var pageTracker = _gat._getTracker("%s");
		pageTracker._trackPageview();%s
	} catch(err) {}";
	protected $uaCode;
	protected $trackVM;
	protected $vmCode;
	protected $triggered = false;
 
    function plgSystemGACode( &$subject )
    {
        parent::__construct($subject);
 
        // load plugin parameters
        $this->_plugin = & JPluginHelper::getPlugin('system', 'gacode');
        $this->_params = new JParameter($this->_plugin->params);
    }
 
    function __destruct()
    {
	    global $mainframe;
    	if ($this->triggered || $mainframe->isAdmin()) return;
 
    	// get configuration parameters
		$this->uaCode  = $this->_params->get('uaCode', '');
		$this->trackVM = $this->_params->get('trackVM', '');		
		$this->vmCode  = $this->trackVM ? "rn".$this->getVMTrackCode() : '';  
 
		// output general code
		$document = & JFactory::getDocument();				
		print("<script type="text/javascript">rn");
		print($this->script1);
		print("</script>rn");
		print("<script type="text/javascript">rn");
		printf($this->script2, $this->uaCode, $this->vmCode);
		print("</script>rn");
		ob_flush();
    }
 
    function onAfterDispatch()
    {
    	// do not run in admin
    	global $mainframe;
    	if ($mainframe->isAdmin()) return;
 
		// get configuration parameters
		$this->uaCode  = $this->_params->get('uaCode', '');
		$this->trackVM = $this->_params->get('trackVM', '');		
		$this->vmCode  = $this->trackVM ? $this->getVMTrackCode() : '';  
 
		// output general code
		$document = & JFactory::getDocument();
		$document->_custom[] = sprintf("<script type="text/javascript">");		
		$document->_custom[] = $this->script1;
		$document->_custom[] = sprintf("</script>");
		$document->_custom[] = sprintf("<script type="text/javascript">");
		$document->_custom[] = sprintf($this->script2, $this->uaCode, $this->vmCode);
		$document->_custom[] = sprintf("</script>");
 
		$this->triggered = true;
    }
 
	function getVMTrackCode()
	{
		$option = JRequest::getVar('option');
		$page = JRequest::getVar('page');
 
		if ($option != 'com_virtuemart' || $page != 'checkout.thankyou') return '';
		require_once(JPATH_ADMINISTRATOR.DS.'components'.DS.'com_virtuemart'.DS.'classes'.DS.'ps_database.php');
 
		$db = new ps_DB;
		//$order_id = $db->getEscaped(vmGet($vars, 'order_id'));
		$order_id = $GLOBALS['vars']['order_id'];
		//die(var_dump($order_id));
 
		$q = 'SELECT order_id, affiliate_id, order_total, order_tax, order_shipping, city, state, country'
		 . ' FROM #__{vm}_orders LEFT JOIN #__{vm}_order_user_info USING (order_id)'
		 . ' LEFT JOIN #__{vm}_affiliate_sale USING (order_id)'
		 . ' WHERE order_id = ' . $db->getEscaped($GLOBALS['vars']['order_id']);			
		$db->query($q);
 
		$code = sprintf('pageTracker._addTrans("%d", "%s", "%f", "%s", "%f", "%s", "%s", "%s");',
		$db->f('order_id'), $db->f('affiliate_id'), $db->f('order_total'), $db->f('order_tax'),
		$db->f('order_shipping'), $db->f('city'), $db->f('state'), $db->f('country'));
 
		$q = 'SELECT order_id, order_item_sku, order_item_name, GROUP_CONCAT(category_name SEPARATOR ', ') AS categories, product_final_price, product_quantity'
		 . ' FROM #__{vm}_order_item LEFT JOIN #__{vm}_product_category_xref USING (product_id)'
		 . ' LEFT JOIN #__{vm}_category AS c USING (category_id)'	 
		 . ' WHERE order_id = ' . $db->getEscaped($GLOBALS['vars']['order_id'])
		 . ' GROUP BY order_id, order_item_sku, order_item_name, product_final_price, product_quantity'
		 ;			
		$db->query($q);	
 
		while ($db->next_record()) {
			$code .= sprintf(' pageTracker._addItem("%d", "%s", "%s", "%s", "%f", "%f");',
			$db->f('order_id'), $db->f('order_item_sku'), $db->f('order_item_name'),
			$db->f('categories'), $db->f('product_final_price'), $db->f('product_quantity'));
		}
 
		$code .= ' pageTracker._trackTrans();';
 
		return $code;
	}
}
?>