<?
/*
File: TrackerLib.php
Author: Michael Hoover
Comments:
TrackerLib.php handles displaying the 'tracker' image with all of the necessary parameters attached.

*/

//function spl_autoload_register($class_name) {
    require_once($_SERVER['DOCUMENT_ROOT'].'/tracker/client/sources/Yahoo.php');
    require_once($_SERVER['DOCUMENT_ROOT'].'/tracker/client/sources/MIVA.php');
    require_once($_SERVER['DOCUMENT_ROOT'].'/tracker/client/sources/Unknown.php');
//}

class TrackerLib
{
	var $trackers = array("Yahoo", "MIVA");
	var $tracker = null;
	var $site;
	
	function __construct($site)
	{
		$this->site = $site;
		foreach ($this->trackers as $tracker)
		{
			$testtracker = new $tracker;
			if ($testtracker->IsTracking())
			{
				$this->tracker = $testtracker;
				$this->tracker->Load($this->site);
				break;
			}
		}
		if ($this->tracker == null)
		{
			$this->tracker = new Unknown();
			$this->tracker->Load($this->site);
		}
	}
	
	function URLParameters()
	{
		return "&spt_site=" . $this->site . $this->tracker->URLParameters();
	}
	
	function TrackerParameters()
	{
		return "&spt_site=" . $this->site . $this->tracker->TrackerParameters();
	}
	
	function FormParameters()
	{
		return "<input type=\"hidden\" name=\"spt_site\" value=\"" . $this->site . "\">\n" . $this->tracker->FormParameters();
	}
}
?>