// xstatistics.js -- Report user information to Drupal
// $Id$

function XSTAT(url, imagesrc, filesize) {
  // methods
  this.send = XSTATsend;
  this.run = XSTATrun;
  
  // save constructor arguments
  this.url = url;
  this.imagesrc = imagesrc;
  this.filesize = filesize;
}

function XSTATrun() {
  var obj = this;
  // general technical information
  this.enabled_java = navigator.javaEnabled();
	this.user_agent = navigator.userAgent.toLowerCase();
	this.agent_os = navigator.platform;
  this.screen_resx = screen.width;
  this.screen_resy = screen.height;
  this.color_depth = screen.colorDepth;
  
  if (navigator.language) { 
    this.user_lang = navigator.language.toLowerCase(); 
  } else if (navigator.browserLanguage) { 
    this.user_lang = navigator.browserLanguage.toLowerCase();
  }

	// some data for later
	var agent_moz = (navigator.appName.indexOf("Netscape") != -1);
	var agent_ie= (this.user_agent.indexOf("msie") != -1);
	var os_win = ((this.user_agent.indexOf("win")!=-1) || (this.user_agent.indexOf("32bit")!=-1));
	
	// enabled plugins
	if (!os_win || agent_moz){
		var mimelist = '';
		for (var i=0; i < navigator.mimeTypes.length; i++) 
			mimelist += navigator.mimeTypes[i].type.toLowerCase();
			
		this.enabled_dir = plugMoz(mimelist, "application/x-director");
		this.enabled_flash = plugMoz(mimelist, "application/x-shockwave-flash");
		this.enabled_pdf = plugMoz(mimelist, "application/pdf");
		this.enabled_qt = plugMoz(mimelist, "video/quicktime");
		this.enabled_real = plugMoz(mimelist, "audio/x-pn-realaudio-plugin");
		this.enabled_wma = plugMoz(mimelist, "application/x-mplayer2");
		
	} else if (os_win && agent_ie){
		this.enabled_dir = plugIE("SWCtl.SWCtl.1");
		this.enabled_flash = plugIE("ShockwaveFlash.ShockwaveFlash.1");
		this.enabled_pdf = (plugIE("PDF.PdfCtrl.1") || plugIE('PDF.PdfCtrl.5')  || plugIE('PDF.PdfCtrl.6')); 
		this.enabled_qt = plugIE("QuickTimeCheckObject.QuickTimeCheck.1");
		this.enabled_real = plugIE("rmocx.RealPlayer G2 Control.1");
		this.enabled_wma = plugIE("MediaPlayer.MediaPlayer.1");
  }

  if (document.images) {
    var start = (new Date()).getTime();
    var pic = new Image(1,1);
    pic.src = this.imagesrc;
    var end = (new Date()).getTime();
    this.speed = compute_speed(start, end, this.filesize)
  }
}

function XSTATsend() {

  var end = (new Date()).getTime();
  
  // make up the GET uri
  var geturl = this.url + "?";
  geturl = geturl + "&java=" + this.enabled_java;
  geturl = geturl + "&os=" + escape(this.agent_os);
  geturl = geturl + "&resx=" + this.screen_resx;
  geturl = geturl + "&resy=" + this.screen_resy;
  geturl = geturl + "&color=" + this.color_depth;
  geturl = geturl + "&lang=" + escape(this.user_lang);
  
  geturl = geturl + "&director=" + this.enabled_dir;
  geturl = geturl + "&flash=" + this.enabled_flash;
  geturl = geturl + "&pdf=" + this.enabled_pdf;
  geturl = geturl + "&qt=" + this.enabled_qt;
  geturl = geturl + "&real=" + this.enabled_real;
  geturl = geturl + "&wma=" + this.enabled_wma;
  
  geturl = geturl + "&speed=" + this.speed;
  
  HTTPGet(geturl);
}

// helper functions
function compute_speed(start, end, filesize) {
  return (Math.floor((((filesize * 8) / ((end - start) / 1000)) / 1024) * 10) / 10);
}

function plugMoz(mimetypes, plugin) {
  return  (mimetypes.indexOf(plugin) != -1 && (navigator.mimeTypes[plugin].enabledPlugin != null));
}
	
function plugIE(plugin) {
  found = false;
  document.write('<SCR' + 'IPT LANGUAGE=VBScript>\n on error resume next \n found = IsObject(CreateObject("' + plugin + '"))</SCR' + 'IPT>\n');
  return found;
}