var initTime=1714418851;
var sid='';

var interval;
var O, P;
var lastId=0;
var users=new Array();

function chatInit() {
  
  P=document.getElementById("chat");
  O=P.o=new objVars();
  O.first=false;
  O.next=false;
  O.last=false;
  
  advAJAX.post({
    url: base+'chat.html',
	cmd: '_initChat',
	onSuccess: function (res) {
	  
	  if (getAjaxResponse(res,"status")=='ok') {
	    writeUsersList(res);
		lastId=getAjaxResponse(res,"lastid");
	  
	    document.getElementById("textBox").disabled=false;
	    document.getElementById("textBoxButton").disabled=false;
	    document.getElementById("textBox").focus();
	  
	    interval=setInterval(getChatData,3000);
	  }
	  else if (error=getAjaxResponse(res,"error"))
	    alert (error);
	  else alert (UNKNOWN_ERROR);
	  
	  
	},
	timeout:5000,
	retry:2,
	retryDelay:1000
  
  });
  
}

function writeUsersList(res) {
	  var items=res.responseXML.getElementsByTagName('user');
	  var usersBox=document.getElementById("chatUsersBox");
	  if (usersBox.children.length)
	    usersBox.removeChild(usersBox.lastChild);
	  var list=new htmlTag1(usersBox,"div","usersList");
	  
	  for (i=0;i<items.length;i++) {
			writeNow(i);
		}

		function writeNow(i) {
	      var user=getAjaxArrayResponse(items[i],"name");
		  var avatar=getAjaxArrayResponse(items[i],"avatar");
		  var gender=getAjaxArrayResponse(items[i],"gender");
		  
		  var userO=new objVars();
		  userO.user=user;
		  userO.avatar=avatar;
		  userO.gender=gender;
		  users[user]=userO;
		  
		  
		  var a=new htmlTag(list,"a","userShowLittle");
		  a.obj.onclick=function() {showUser(user)};
		  a=a.append();
		  
		  var text=document.createTextNode(user);
		  a.appendChild(text);
		}
		
}


function writeMessages(res) {
      var items=res.responseXML.getElementsByTagName('message');  
	  
	  var textBox=document.getElementById("chatTextBox");
	  
	  for (i=0;i<items.length;i++) {
			writeNow(i);
		}
	  
  
	  function writeNow(i) {
	    var user=getAjaxArrayResponse(items[i],"username");
		var time=getAjaxArrayResponse(items[i],"time");
		var text=getAjaxArrayResponse(items[i],"text");
		var avatar=users[user].avatar;
		
		var message=new htmlTag1(textBox,"div","chatMessage");
		var avatarPart=new htmlTag1(message,"div","avatarPart");
		var userPart=new htmlTag1(message,"div","userPart");
		var chatuserLayer=new htmlTag1(userPart,"div","userLayer");
		
		var indic=new Image();
		indic.src='images/indicator.gif';
		indic.style.width='12px';
		indic.style.height='12px';
		indic.style.top='15px';
		avatarPart.appendChild(indic);
		
		var userName=document.createTextNode(user);
		chatuserLayer.appendChild(userName);
		
		var userAvatar=new Image();
		userAvatar.onload=function() {
		  avatarPart.removeChild(indic);
		  
		  var tmpW=50;
		  var tmpH=Math.round(tmpW/(userAvatar.width/userAvatar.height));
		  
		  if (tmpH>50) {
		    tmpH=50;
			tmpW=Math.round(tmpH*(userAvatar.width/userAvatar.height));
		  }
		  userAvatar.style.width=tmpW+'px';
		  userAvatar.style.height=tmpH+'px';
		  
		  avatarPart.appendChild(userAvatar);
		  textBox.scrollTop=textBox.scrollHeight;
		
		}
		
		if (avatar!='0')
		  userAvatar.src='avatars/'+user+'.jpg?'+avatar;
		else {
		
		  if (users[user].gender=='F')
		    userAvatar.src='images/avatarFemaleSmall.gif';
		  else
		    userAvatar.src='images/avatarMaleSmall.gif';
		
		
		
		}
		
		
		var timeLayer=new htmlTag1(userPart,"div","userTime");
		var userTime=document.createTextNode(time);
		timeLayer.appendChild(userTime);
		
		var messagePart=new htmlTag1(message,"div","messagePart");
		var msg=document.createTextNode(text);
		messagePart.appendChild(msg);
		
		if (i==items.length-1) {
		  lastId=getAjaxArrayResponse(items[i],"id");
		  removeOldies();
		  }
		
	  }
	  
	  function removeOldies() {
	
		while (textBox.children.length>100)
		  textBox.removeChild(textBox.children[0]);
	  
	  }
	  
	  

}

function getChatData() {
		if (O.busy) return;
		
		O.busy=true;
	    advAJAX.post({
		  url: base+'chat.php?p=chatModule',
		  cmd: '_getData',
		  sid: sid,
		  lastid: lastId,
		  timeout:5000,
		  onSuccess: function (res) {
		    writeUsersList(res);
			writeMessages(res);
			var newLastId=getAjaxResponse(res,"lastid");
			if (newLastId<lastId)
			  lastId=newLastId;
		  
		  },
		  
		  onFinalization: function () {
		    O.busy=false;    
		  
		  }
		
		});
		
		
	  

}

function sendChatMessage() {
	var obj=document.getElementById("chatPseudoForm");
	var text=obj.children[0];
	var but=obj.children[1];
	
	var msg=text.value;
	if (!msg) return;
	
	var item=new objVars();
	item.msg=msg;
	item.next=false;
	
    if (!O.first) {
	    O.first=item;
		O.last=item;
	    }
    else {
		O.last.next=item;
		O.last=item;
		}

	
	text.value='';
	
	
	
	if (!O.busy)
	  adPost();
	else 
	  var inter1=setInterval(adPost,100);
		
		
	  
	
	text.focus();
    

    function adPost() {
	  if (!O.busy) {
		O.busy=true;
		advAJAX.post({
		  url: base+'chat.php?p=chatModule',
		  cmd: '_newMsg',
		  sid: sid,
		  lastid: lastId,
		  text: O.first.msg,
		  timeout: 3000,
		  retry:2,
		  onSuccess: function(res) {
			writeUsersList(res);
			writeMessages(res);
			O.first=O.first.next;
			if (!O.first) O.last=false;
			
		  
		  },
		  onFinalization: function() {
			O.busy=false;
			clearInterval(interval);
	        interval=setInterval(getChatData,3000);

		  }
		
		
		});
		
		if (inter1!='undefined')
		  clearInterval(inter1);
		
	  }
    
	} 	

}

function keyPress(e) {
	// look for window.event in case event isn't passed in
	if (typeof e == 'undefined' && window.event) { e = window.event; }
	if (e.keyCode == 13)
	{
		sendChatMessage();
	}
}