<?php

defined('_JEXEC') or die('Access denied');

jimport('joomla.application.component.model');

require_once(dirname(__FILE__) . DS . 'piwik' . DS . 'PiwikTracker.php');

// This model is used for Piwik logging when no frontend is available.
class OpenAireModelPiwik extends JModelItem {
	const MAX_DATA = 200;
	const PAGE = 'page';
	
	private $tracker;

	// Construct a new OpenAireModelClaim.
	// $configuration the configuration to use
	public function __construct($configuration) {
		parent :: __construct($configuration);
		$parameters = JComponentHelper :: getParams('com_openaire');
		$this -> tracker = new PiwikTracker($parameters -> get('piwikSiteId'), $parameters -> get('piwikUrl'));
	}
	
	// Track a page view using Piwik.
	// $title the page title to track
	// $data the data to track
	public function track($title, $data) {
		$this -> tracker -> setCustomVariable(1, 'user', JFactory :: getUser() -> email, self :: PAGE);
		$this -> tracker -> setCustomVariable(2, 'session', JFactory :: getSession() -> getId(), self :: PAGE);
		$this -> tracker -> setCustomVariable(3, 'data', substr($data, 0, self :: MAX_DATA), self :: PAGE);
		$this -> tracker -> setCustomVariable(4, 'data', substr($data, self :: MAX_DATA, 2 * self :: MAX_DATA), self :: PAGE);
		$this -> tracker -> setCustomVariable(5, 'data', substr($data, 2 * self :: MAX_DATA, 3 * self :: MAX_DATA), self :: PAGE);
		$this -> tracker -> doTrackPageView($title);
	}
}