//Author and copyright: Thomas Papenmeier (Stein), 2008

var servlet = "http://testserver.shadowmere.de/Shadowmere2/FWS";
var getQueryInterval;
var sentTime = 0;
var updateTime = 0;
var lastIncomingUpdateTime = 0;
var waitingForAnswer = false;
var chat = new Array();
var wideChat = false;
var chatClosed = false;
var internetExplorer = false;
var showChat = true;
var showAllianceChat = true;

function chatComparator(a,b) //Stein: a and b arrays
{
 var time1 = a[0];
 var time2 = b[0];
 var result = time1*1 - time2*1;
 return (result>0)?1:(result<0)?-1:0;
}

function initChat() 
{
 if (navigator.appName == "Microsoft Internet Explorer")
 {
  internetExplorer = true;
 }
 if (document.cookie)
 {
  a = document.cookie;
  var index = a.indexOf("chatclosed=");
  if (index != -1)
  {
   var semicolon = a.indexOf(";",index);
   if(semicolon == -1)
   {
    semicolon = a.length;
   }
   chatClosed = (a.substring(index+11,semicolon) == "true");
  }
  var indexChat = a.indexOf("chaton=");
  if (indexChat != -1)
  {
   var semicolon = a.indexOf(";",indexChat);
   if(semicolon == -1)
   {
    semicolon = a.length;
   }
   if (a.substring(indexChat+7,semicolon) == "false")
   {
    showChat = false;
   }
  }
  var indexAllianceChat = a.indexOf("alliancechaton=");
  if (indexAllianceChat != -1)
  {
   var semicolon = a.indexOf(";",indexAllianceChat);
   if(semicolon == -1)
   {
    semicolon = a.length;
   }
   if (a.substring(indexAllianceChat+15,semicolon) == "false")
   {
    showAllianceChat = false;
   }
  }
 }
 if (showChat && showAllianceChat)
 {
  document.getElementById("alltab").className = "activechattab";
  document.getElementById("chattab").className = "chattab";
  document.getElementById("alliancechattab").className = "chattab";
 }
 else if (showChat && !showAllianceChat)
 {
  document.getElementById("alltab").className = "chattab";
  document.getElementById("chattab").className = "activechattab";
  document.getElementById("alliancechattab").className = "chattab";
 }
 else //alliance chat
 {
  document.getElementById("alltab").className = "chattab";
  document.getElementById("chattab").className = "chattab";
  document.getElementById("alliancechattab").className = "activechattab";
  document.getElementById("chatinput").className = "alliancechat";
 }
 if (!chatClosed)
 {
  receiveFromServlet(chatxml);
//force scroll down
  var objDiv = document.getElementById("chattext");
  objDiv.scrollTop = objDiv.scrollHeight;
  getQueryInterval = window.setInterval("queryChat();",4000); //see also openchat
 }
 else
 {
  document.getElementById("chathead").style.display = "none";
  document.getElementById("chat").style.display = "none";
  document.getElementById("usersonline").firstChild.nodeValue = " ";
 }
}

function queryChat()
{
 //Stein: no auto query, if other query last 2 seconds
 curTime = new Date();
 if (sentTime + 4000 >= curTime.getTime())
 {
  return true;
 }
 sendToServlet("actionType=ajax&action=querychat");
 return true;
}

function sendChat()
{
 if (document.getElementById("chatinput").value != '') 
 {
  var chatLine = document.getElementById("chatinput").value;
  
  chatLine = toValidString(chatLine);
  
  if (!showChat && showAllianceChat)
  {
   chatLine = "#" + chatLine;
  }
  
  var success = sendToServlet("actionType=ajax&action=sendchat&message=" + chatLine);
  if (success)
  {
   document.getElementById("chatinput").value = "";
  }
 }
}

function sendToServlet(text) //Stein: also puts the response into the chat area
{
 if (waitingForAnswer)
 {
  if (sentTime + 3000 < curTime.getTime()) //Stein: It is 3 seconds since last query
  {
   waitingForAnswer = false;
  }
  else
  {
   setTimeout("sendToSevlet('" + text +"')",1000);
//   alert("The server is currently answering one of your queries. Please wait a few seconds!");
  }
 }
 waitingForAnswer = true;
 text += "&time=" + updateTime; //for chat and news
 var xmlHttp = null;
 // Mozilla, Opera, Safari sowie Internet Explorer 7
 if (typeof XMLHttpRequest != 'undefined')
 {
  xmlHttp = new XMLHttpRequest();
 }
 if (!xmlHttp)
 {
  // Internet Explorer 6 und älter
  try
  {
   xmlHttp  = new ActiveXObject("Msxml2.XMLHTTP");
  }
  catch(e)
  {
   try
   {
    xmlHttp  = new ActiveXObject("Microsoft.XMLHTTP");
   }
   catch(e)
   {
    xmlHttp  = null;
    alert("Your browser does not support AJAX!");
   }
  }
 }
 if (xmlHttp)
 {
  xmlHttp.open('POST', servlet, true);
  xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
  xmlHttp.onreadystatechange = function ()
  {
   if (xmlHttp.readyState == 4) //Stein: answer from server arrived. This is an object handler that is kind of threaded
   {
    waitingForAnswer = false;
    receiveFromServlet(xmlHttp.responseText);
   }
  };
  curTime = new Date();
  sentTime = curTime.getTime();
  xmlHttp.send(text);
 }
 return true;
}
 
//Stein: This also parses news
function receiveFromServlet(xml)
{
 //alert(xml);
 //Servlet requests login
 if (xml.indexOf("<nosession>") != -1) //Stein: not logged in
 {
  alert("login error, tell Stein");
  return;
 }
 
 var index = xml.indexOf("<chat>");
 while (index != -1)
 {
  var chatMessageString = xml.substring(xml.indexOf("<chat>",index)+6,xml.indexOf("</chat>",index));
  var time = getUnformattedNumberFromXML(chatMessageString,"time");
  if (time > lastIncomingUpdateTime) //Stein: used to stop double posts with slow connections
  {
   chat.push(getChatMessage(chatMessageString));
  }
  index += 1;
  index = xml.indexOf("<chat>",index);
 }
 lastIncomingUpdateTime = updateTime; //Stein: used to stop double posts
 updateChat();
 
 document.getElementById("usersonline").firstChild.nodeValue = getStringFromXML(xml,"usersonline")
   + " users online";
 
}

//----------------
function getChatMessage(xml)
{
 var time = getUnformattedNumberFromXML(xml,"time");
 var type = "chat";
 if (time > updateTime)
 {
  updateTime = time;
 }
 var channel = getStringFromXML(xml,"channel");
 var message = getStringFromXML(xml,"message");
 var username = getStringFromXML(xml,"username");
 var color = getStringFromXML(xml,"color");
 
 //convert links
 var messageParts = message.split("http://") ;
 message = "";
 for (var i=0;i<messageParts.length;i++)
 {
  if (i > 0) //all but first are new links
  {
   var linkEnd = messageParts[i].indexOf(" ");
   var messageEnd = messageParts[i].length;
   if (linkEnd == -1)
   {
    linkEnd = messageEnd;
   }
   var link = messageParts[i].substring(0,linkEnd);
   var rest = messageParts[i].substring(linkEnd,messageEnd);
   message += "<a href=\"http://" + link + "\" target=\"_blank\">http://" + link + "</a>";
   message += rest;
  }
  else
  {
   message += messageParts[i];
  }
 }
 //insert emoticons/smileys
 message = message.replace(/:@/g,"<img src=\"images/angry.jpg\">");
 message = message.replace(/:\(/g,"<img src=\"images/frown.jpg\">");
 message = message.replace(/\/bash/g,"<img src=\"images/blush.jpg\">");
 message = message.replace(/:'\(/g,"<img src=\"images/cry.jpg\">");
 message = message.replace(/\*\?/g,"<img src=\"images/dark.jpg\">");
 message = message.replace(/8\|/g,"<img src=\"images/disbelief.jpg\">");
 message = message.replace(/:\)/g,"<img src=\"images/th_smile.jpg\">");
 message = message.replace(/\/heart/g,"<img src=\"images/heart.jpg\">");
 message = message.replace(/:x/g,"<img src=\"images/kiss.jpg\">");
 message = message.replace(/:X/g,"<img src=\"images/kiss.jpg\">");
 message = message.replace(/:-\*/g,"<img src=\"images/kiss.jpg\">");
 message = message.replace(/\/roflmao/g,"<img src=\"images/roflmao.jpg\">");
 message = message.replace(/\/busypoo/g,"<img src=\"images/busypooping.jpg\">");
 message = message.replace(/:s/g,"<img src=\"images/disbelief.jpg\">");
 message = message.replace(/:S/g,"<img src=\"images/disbelief.jpg\">");
 message = message.replace(/:o/g,"<img src=\"images/ohdear.jpg\">");
 message = message.replace(/:O/g,"<img src=\"images/ohdear.jpg\">");
 message = message.replace(/\/poo/g,"<img src=\"images/Got_poo.jpg\">");
 message = message.replace(/:P/g,"<img src=\"images/tongue.jpg\">");
 message = message.replace(/:p/g,"<img src=\"images/tongue.jpg\">");
 message = message.replace(/:D/g,"<img src=\"images/grin.jpg\">");
 message = message.replace(/;\)/g,"<img src=\"images/wink.jpg\">");
 message = message.replace(/\/santa/g,"<img src=\"images/santa.jpg\">");
 message = message.replace(/\/vamp/g,"<img src=\"images/vamp.jpg\">");
 message = message.replace(/\/orc/g,"<img src=\"images/orc.jpg\">");
 message = message.replace(/\/moogly/g,"<img src=\"images/gomo.jpg\">");
 message = message.replace(/\/moo/g,"<img src=\"images/moo.jpg\">");
 message = message.replace(/\/lep/g,"<img src=\"images/lep.jpg\">");
 message = message.replace(/O_o/g,"<img src=\"images/bugeyed.jpg\">");
      
 var thirdPerson = false;
 if (xml.indexOf("<thirdperson>") != -1)
 {
  thirdPerson = true;
 }
 
 var hasAvatar = false;
 if (xml.indexOf("<avatar>") != -1)
 {
  hasAvatar = true;
 }
 var avatarURL = "";
 if (hasAvatar)
 {
  avatarURL = getStringFromXML(xml,"avatar");
 }

 //Stein:                                             0         1           2                    3                 4                 5                 6                                     7                               8
 message = new Array(time,type,channel,message,username,color,thirdPerson,hasAvatar,avatarURL);
 return message;
}

//--------------------------------------------------------------------
function getChatContent()
{
 var chatContent = "";
 chat.sort(chatComparator);
 for (var i=0;i<chat.length;i++)
 {
  if ((chat[i][1] == "chat") && 
   ((showChat && (chat[i][2] == "Lobby")) || (showAllianceChat && (chat[i][2] == "alliance"))))
  {
   if (chat[i][2] == "alliance")
   {
    chatContent += "<font color=#00FF00>[";
   }
   else
   {
    chatContent += "<font color=#FFFFCC>[";
   }
   date = new Date(chat[i][0]);
   chatContent += date.getHours() + ":";
   var mins = date.getMinutes();
   if (mins <= 9)
   {
    chatContent += "0";
   }
   chatContent += mins;
   chatContent += "] ";
   chatContent += "</font><font color=";
   chatContent += chat[i][5];
   chatContent += ">";
   if (chat[i][6]) //thirdPerson
   {
    chatContent +="*";
	chatContent += chat[i][4]; //userName
   }
   else
   {
    if (chat[i][7]) //hasAvatar
    {
     chatContent += "<img src=\"" + chat[i][8] + "\" title=\"" + chat[i][4] + "\">";
    }
    else //no avatar
    {
     chatContent +="&lt;";
     chatContent += chat[i][4]; //userName
     chatContent += "&gt;"
    } //Stein: end of no avatar
   } //Stein: end of thirdperson
   chatContent += " ";
   chatContent += chat[i][3];
   chatContent += "</font>";
   //Stein: insert line breaks
   if (i < chat.length-1)
   {
    chatContent += "<br>"
   }
  }
 }
 return chatContent;
} 

//-----------------------------------------------
function updateChat()
{
 var objDiv = document.getElementById("chattext");
 var scrollDown = true;
 if (objDiv.scrollTop + objDiv.clientHeight < objDiv.scrollHeight - 100) //Stein: user scrolled up; the -100 is because firefox stopped scrolling from time to time
 {
  scrollDown = false;
 }
 document.getElementById('chattext').innerHTML = getChatContent();
 //Stein: scroll down
 
 if (scrollDown)
 {
  objDiv.scrollTop = objDiv.scrollHeight;
 }
}

//--------------------------------------------------------
function updateChatCookie()
{
 var a = new Date();
 a = new Date(a.getTime() + 1000*60*60*24*365); // 1 year
 document.cookie = 'chaton=' + showChat + '; expires='+a.toGMTString()+';';
 document.cookie = 'alliancechaton=' + showAllianceChat + '; expires='+a.toGMTString()+';'; 
 updateChat();
}

//------------------------------------------------------------------
function allChatTab()
{
 showChat = true;
 showAllianceChat = true;
 document.getElementById("alltab").className = "activechattab";
 document.getElementById("chattab").className = "chattab";
 document.getElementById("alliancechattab").className = "chattab";
 document.getElementById("chatinput").className = "chatinput";
 updateChatCookie();
}

function chatTab()
{
 showChat = true;
 showAllianceChat = false;
 document.getElementById("alltab").className = "chattab";
 document.getElementById("chattab").className = "activechattab";
 document.getElementById("alliancechattab").className = "chattab";
 document.getElementById("chatinput").className = "chatinput";
 updateChatCookie();
}

function allianceChatTab()
{
 showChat = false;
 showAllianceChat = true;
 document.getElementById("alltab").className = "chattab";
 document.getElementById("chattab").className = "chattab";
 document.getElementById("alliancechattab").className = "activechattab";
 document.getElementById("chatinput").className = "alliancechat";
 updateChatCookie();
}

//-----------------------------------------------------
function changeWideChat()
{
 if (chatClosed)
 {
  openChat();
  return;  
 }
 if (wideChat)
 {
  document.getElementById("mitte").style.display = "block";
  document.getElementById("right").style.width = "22%";
  document.getElementById("widechatbutton").firstChild.nodeValue = "<";
  wideChat = false;
  //Stein: enforce scrolling, because the thin chat is farer down
  var objDiv = document.getElementById("chattext");
  objDiv.scrollTop = objDiv.scrollHeight;
 }
 else
 {
  document.getElementById("mitte").style.display = "none";
  document.getElementById("right").style.width = "80%";
  document.getElementById("widechatbutton").firstChild.nodeValue = ">";
  wideChat = true;
 }
}

function closeChat()
{
 if (wideChat)
 {
  changeWideChat();
  return;
 }
 clearInterval(getQueryInterval);
 document.getElementById("chat").style.display = "none";
 document.getElementById("chathead").style.display = "none";
 document.getElementById("usersonline").firstChild.nodeValue = " ";
 var a = new Date();
 a = new Date(a.getTime() + 1000*60*60*24*365); // 1 year
 document.cookie = 'chatclosed=true; expires='+a.toGMTString()+';'; 
 chatClosed = true;
}

function openChat()
{
 document.getElementById("chat").style.display = "block";
 document.getElementById("chathead").style.display = "block";
 getQueryInterval = window.setInterval("queryChat();",4000); //see also initChat
 var a = new Date();
 a = new Date(a.getTime() + 1000*60*60*24*365); // 1 year
 document.cookie = 'chatclosed=false; expires='+a.toGMTString()+';'; 
 chatClosed = false;
}

 //XML functions###########################################################################################
function getStringFromXML(xml,tag)
{
 var index1 = xml.indexOf("<" + tag + ">")+tag.length+2;
 var index2 = xml.indexOf("</" + tag + ">");
 if ((index1 == -1) || (index2 == -1) || (index1 == index2))
 {
  return "";
 }
 return xml.substring(index1,index2);
}
 
function getUnformattedNumberFromXML(xml,tag)
{
  var text = getStringFromXML(xml,tag);
  return text*1;
} 
 
function getNumberFromXML(xml,tag)
{
  var text = getStringFromXML(xml,tag);
  return formatNumber(text);
}

function formatNumber(text)
{
 var number = "";
 while (text.length > 3)
 {
  number =  "," + text.substring(text.length-3,text.length) + number;
  text = text.substring(0,text.length-3);
 }
 number = text + number;
 return number;
}
 
 //Stein: Shows a double as percent
function getDoublePercentFromXML(xml,tag)
{
  var text = getStringFromXML(xml,tag);
  return formatNumber("" + Math.round(text*100)) + "%";
}

function getBooleanFromXML(xml,tag)
{
 var result = getStringFromXML(xml,tag);
 return (result == "true");
}

//-------------------------------------------------------------
function toValidString(text)
{
 text = text.replace(/%/g,"%25");
 text = text.replace(/\+/g,"%2B");
 text = text.replace(/&/g,"%26");
 if (internetExplorer)
 {
  text = text.replace(/Ä/g,"%C4");
  text = text.replace(/Ö/g,"%D6");
  text = text.replace(/Ü/g,"%DC");
  text = text.replace(/ä/g,"%E4");
  text = text.replace(/ö/g,"%F6");
  text = text.replace(/ü/g,"%FC");
 }
 return text;
}