var serverIMUrl="http://www.espertoweb.com/moodle/blocks/instmsg/core/ajax_instmsg.php";
var userid="0";
var username="";
var pingTimer;
var _TTim;

var pathImage="http://www.espertoweb.com/moodle/blocks/instmsg/core/pix";
var chat_windows=0;

function openUsersList() {
	var data="op=getUsersList";
	var request = YAHOO.util.Connect.asyncRequest('GET', serverIMUrl+'?'+data, callback_openUsersList);
	
}

var showUsersList=function(ObjReq) {
	var listText = ObjReq.responseText;
	var users = YAHOO.lang.JSON.parse(listText);
	
	
	displayUsersList(users.list,true);
}

var showUsersListKO = function(o){
	if(o.responseText !== undefined){
		alert("Il server non risponde. Chiudi questo pannello e riprova.");
	}
}

var callback_openUsersList =
{
  success:showUsersList,
  failure: showUsersListKO,
  argument: { }
};



	
function displayUsersList(usersList) {	
	
	var str='<ul class="list">';
	var available='';
	
	for (var i=0;i<usersList.length;i++) {
		if (usersList[i].userid!=userid && usersList[i].status=="online") {
			str+='<li class="listentry"><div class="user">'+usersList[i].img+'<a href="javascript:;" onclick="startChat(\''+usersList[i].userid+'\',\''+usersList[i].username+'\');">'+usersList[i].fullname+'</a></div></li>';
		} else {
			//str+='<li class="listentry"><div class="user">'+usersList[i].img+usersList[i].fullname+'</div></li>';
		}
	};
	
	str+='</ul>';
	
	
	
	var name="userlist";
	if (wObjList[name]==null) {
	str='<div id="listContainer">'+str+'</div>';
	var butns='<button onclick=";wObjList[\''+name+'\'].w_obj.hide()">Chiudi</button>';
	var title="On Line User";
	
	var butns='';
	var panel=new Window();
	panel.containerId="content";
	panel.type="panel";
	panel.id=name;
	panel.title=title;
	panel.content=str;
	panel.width=330;
	panel.height=488;
	panel.buttons=butns;
	panel.close=true;
	panel.fixedcenter=false;
	panel.y=488;
	panel.show();
	} else {
		document.getElementById('listContainer').innerHTML=str;
		wObjList[name].w_obj.show();
	}
	//document.getElementById('listContainer').innerHTML=str;

}

function refreshUsersList(usersList) {	
	
	var str='<ul class="list">';
	var available='';
	
	for (var i=0;i<usersList.length;i++) {
		if (usersList[i].userid!=userid && usersList[i].status=="online") {
			str+='<li class="listentry"><div class="user">'+usersList[i].img+'<a href="javascript:;" onclick="startChat(\''+usersList[i].userid+'\',\''+usersList[i].username+'\');">'+usersList[i].fullname+'</a></div></li>';
		} else {
			//str+='<li class="listentry"><div class="user">'+usersList[i].img+usersList[i].fullname+'</div></li>';
		}
	};
	
	str+='</ul>';
	var name="userlist";
	if (wObjList[name]!=null) {
		document.getElementById('listContainer').innerHTML=str;
	}

}

function startChat(id_sender,name_sender) {
	
	if (id_sender==userid) return 0;
	
	var wChat=id_sender;
	if (wObjList[wChat]==null) {
		clearInterval(pingTimer);
		pingTimer=setInterval("ping()",5000);
		chat_windows++;
		getChatContent(wChat,name_sender);
	}

}


function getChatContent(wChat,name_sender) {

	var id_receiver=userid;
	var name_receiver=username;
	var id_sender=wChat;

	
	var data="op=getContent";
	data+="&wChat="+wChat;
	data+="&id_sender="+id_sender;
	data+="&id_receiver="+id_receiver;
	data+="&name_sender="+name_sender;
	data+="&name_receiver="+name_receiver;
	
	var request = YAHOO.util.Connect.asyncRequest('GET', serverIMUrl+'?'+data, callback_getChatContent);

	
}

var showChat=function(ObjReq) {
	var chatText = ObjReq.responseText;
	var chatObj = YAHOO.lang.JSON.parse(chatText);
	
	var wChat=chatObj.wChat;
	var name_sender=chatObj.name_sender;
	var msg="";
	str='<div class="chat">';
	str+='<div id="'+wChat+'_text'+'" class="chatText">';
	
	for (var i=0;i<chatObj.content.length;i++) {
		msg=unescape(chatObj.content[i].msg);
		msg=replaceEmoticon(msg);
		
		str+="<span class=\"timestamp\"> (" + chatObj.content[i].timestamp + ")</span> <strong class=\""+chatObj.content[i].userClass+"\">" + chatObj.content[i].userName + ":</strong> <span class=\""+chatObj.content[i].lineStatus+"\">" + msg + "</span><br />\n";
	}
	
	str+='</div>';
/*
	str+='<input type="text" name="'+wChat+'_inputBox'+'" id="'+wChat+'_inputBox'+'" onkeypress="keyHandler(event,'+"'"+wChat+"'"+');" style="width:350px;" /> <button onclick="sendLine(\''+wChat+'\')">'+_TTim._SEND+'</button>';
*/
	str+='<input type="text" name="'+wChat+'_inputBox'+'" id="'+wChat+'_inputBox'+'" onkeypress="keyHandler(event,'+"'"+wChat+"'"+');" style="width:350px;" /> <button onclick="sendLine(\''+wChat+'\')">Ok</button>';
	str+="</div>";
	
		str+="<a href=\"javascript:;\" onclick=\"javascript:window.open('http://www.espertoweb.com/moodle/blocks/instmsg/core/juke_box.php?chat_id="+wChat+"', 'myRemotejuke_box',        'height=400,width=450,alwaysLowered=0,alwaysRaised=0,channelmode=0,dependent=0,directories=0,fullscreen=0,hotkeys=1,location=0,menubar=0,resizable=1,scrollbars=1,status=0,titlebar=1,toolbar=0,z-lock=0','myWindowjuke_box');\">Juke Box</a>&nbsp;<div id=\"j"+wChat+"\" style=\"display:block;background:#fff;\"></div>";
		
	str+='<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" width="1" height="1" id="soundeffect" align=""> <param name="movie" value="http://www.espertoweb.com/moodle/blocks/instmsg/core/grilli.swf"> <param name="quality" value="high"> <parame name="bgcolor" value="#FFFFFF"> <embed src="http://www.espertoweb.com/moodle/blocks/instmsg/core/grilli.swf" quality="high" bgcolor="#FFFFFF" name="soundeffect" width="1" height="1" align="" type="application/x-shockwave-flash" pluginspace="http://www.macromedia.com/go/getflashplayer"></embed></object>';

	Stamp = new Date(); 
	var day = String(Stamp.getDate());
	var month = String(Stamp.getMonth()+1);
	var year = String(Stamp.getFullYear());
	 
	day = (day.length > 1) ? day : "0"+day; 
	month = (month.length > 1) ? month : "0"+month; 
	
	var name=wChat;
	//var title=_TTim._CHAT+": "+name_sender+" ("+ day + "/" + month + "/" + year+")";
	var title=name_sender+" ("+ day + "/" + month + "/" + year+")";
	
	var butns='<button onclick="updateTimers();wObjList[\''+name+'\'].w_obj.hide()">Chiudi</button>';
	var panel=new Window();
	panel.containerId="content";
	panel.type="panel";
	panel.id=name;
	panel.title=title;
	panel.content=str;
	panel.width=430;
	panel.height=488;
	panel.buttons=butns;
	panel.close=false;
	panel.fixedcenter=false;
	panel.y=488;
	panel.show();
		
	var chatBox=document.getElementById(wChat+'_text');
	setTimeout("setScroll('"+wChat+"_text')",500);			
}

var showChatKO = function(o){
	if(o.responseText !== undefined){
		//alert("Il server non risponde. Chiudi questo pannello e riprova.");
	}
}

var callback_getChatContent =
{
  success:showChat,
  failure: showChatKO,
  argument: { }
};



function setScroll(chatDiv) {
	var chatBox=document.getElementById(chatDiv);
	chatBox.scrollTop = chatBox.scrollHeight - chatBox.clientHeight;	
}

function keyHandler( e, wChat ) {
   var asc = document.all ? event.keyCode : e.which;
   
   if(asc == 13) {
      sendLine(wChat);
   }
   return asc != 13;
}

function sendLine(wChat) {
	var sentText=String(document.getElementById(wChat+'_inputBox').value);
	document.getElementById(wChat+'_inputBox').value='';
	if (sentText.length < 1) return true;
	
	document.getElementById(wChat+'_inputBox').value="";
	 Stamp = new Date(); 
	 var h = String(Stamp.getHours()); 
	 var m = String(Stamp.getMinutes()); 
	 var s = String(Stamp.getSeconds());
	 var day = String(Stamp.getDate());
	 var month = String(Stamp.getMonth()+1);
	 var year = String(Stamp.getFullYear());
	 
	 day = (day.length > 1) ? day : "0"+day; 
	 month = (month.length > 1) ? month : "0"+month; 
     h = (h.length > 1) ? h : "0"+h; 
	 m = (m.length > 1) ? m : "0"+m; 
	 s = (s.length > 1) ? s : "0"+s;
	
	var msg=replaceEmoticon(sentText);
	var chatBox=document.getElementById(wChat+'_text');
	chatBox.innerHTML = chatBox.innerHTML + "<span class=\"timestamp\"> (" + h + ":" + m + ":" + s + ")</span> <strong class=\"userA\">" + username + ":</strong> <span class=\"new\">" + msg + "</span><br />\n";
 	
    chatBox.scrollTop = chatBox.scrollHeight - chatBox.clientHeight;	 
	
		if (msg.indexOf('jukebox') != -1) {
		var parole=msg.split(" ");
		var song=parole[1];
		var jb = document.getElementById('j'+wChat);
		if (song=="stop") {
			jb.innerHTML="";
		} else {
			song='http://www.espertoweb.com/moodle/mod/chat/juke_box/'+song+'.mp3';
			jb.innerHTML="<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0\" width=\"56\" height=\"28\" id=\"mp3player_med\" align=\"middle\"><param name=\"allowScriptAccess\" value=\"sameDomain\" /><param name=\"movie\" value=\"http://www.espertoweb.com/moodle/mod/chat/juke_box/mp3player_med.swf?filemp3="+song+"\" /><param name=\"quality\" value=\"high\" /><param name=\"bgcolor\" value=\"#ffffff\" /><embed src=\"http://www.espertoweb.com/moodle/mod/chat/juke_box/mp3player_med.swf?filemp3="+song+"\" quality=\"high\" bgcolor=\"#ffffff\" width=\"56\" height=\"28\" name=\"mp3player_med\" align=\"middle\" allowScriptAccess=\"sameDomain\" type=\"application/x-shockwave-flash\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" /></object>";
		}
	
	}
		
	var id_sender=userid;
	var id_receiver=wChat;
	var msg=new String();
	
	msg=escape(sentText);
	var data="op=sendLine&wChat="+wChat+"&id_sender="+id_sender+"&id_receiver="+id_receiver+"&msg="+msg;
	var request = YAHOO.util.Connect.asyncRequest('GET', serverIMUrl+'?'+data, callback_sendLine);
	
}

var lineSent=function(ObjReq) {
	return true;
}

var lineSentKO = function(o){
	if(o.responseText !== undefined){
		//alert("Il server non risponde. Chiudi questo pannello e riprova.");
	}
}

var callback_sendLine =
{
  success:lineSent,
  failure: lineSentKO,
  argument: { }
};


function ping() {
	
	var id_receiver=userid;
	var name_receiver=username;
		
	var data="op=ping&id_receiver="+id_receiver+"&name_receiver="+name_receiver;
	var request = YAHOO.util.Connect.asyncRequest('GET', serverIMUrl+'?'+data, callback_ping);
	
}

var pingResponseKO = function(o){
	if(o.responseText !== undefined){
		//alert("Il server non risponde. Chiudi questo pannello e riprova.");
	}
}

var pingResponse=function(ObjReq) {
	var chatMsgsText = ObjReq.responseText;
	var chatMsgs = YAHOO.lang.JSON.parse(chatMsgsText);
	
	for (var i=0;i<chatMsgs.content.length;i++) {
		var wChat=chatMsgs.content[i].id_sender;
		
		if (wObjList[wChat]==null) {
			startChat(chatMsgs.content[i].id_sender,chatMsgs.content[i].name_sender);
			return true;
		}
		
		msg=unescape(chatMsgs.content[i].msg);
		msg=replaceEmoticon(msg);
		
		var chatBox=document.getElementById(wChat+'_text');
		
		chatBox.innerHTML = chatBox.innerHTML + "<span class=\"timestamp\"> (" + chatMsgs.content[i].timestamp + ")</span> <strong class=\"userB\">" + chatMsgs.content[i].name_sender + ":</strong> <span class=\"new\">" + msg + "</span><br />\n";
 		
				if (msg.indexOf('jukebox') != -1) {
		var parole=msg.split(" ");
		var song=parole[1];
		var jb = document.getElementById('j'+wChat);
		if (song=="stop") {
			jb.innerHTML="";
		} else {
			song='http://www.espertoweb.com/moodle/mod/chat/juke_box/'+song+'.mp3';
			jb.innerHTML="<object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" codebase=\"http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0\" width=\"56\" height=\"28\" id=\"mp3player_med\" align=\"middle\"><param name=\"allowScriptAccess\" value=\"sameDomain\" /><param name=\"movie\" value=\"http://www.espertoweb.com/moodle/mod/chat/juke_box/mp3player_med.swf?filemp3="+song+"\" /><param name=\"quality\" value=\"high\" /><param name=\"bgcolor\" value=\"#ffffff\" /><embed src=\"http://www.espertoweb.com/moodle/mod/chat/juke_box/mp3player_med.swf?filemp3="+song+"\" quality=\"high\" bgcolor=\"#ffffff\" width=\"56\" height=\"28\" name=\"mp3player_med\" align=\"middle\" allowScriptAccess=\"sameDomain\" type=\"application/x-shockwave-flash\" pluginspage=\"http://www.macromedia.com/go/getflashplayer\" /></object>";
		}
			
	}
		
		
    	chatBox.scrollTop = chatBox.scrollHeight - chatBox.clientHeight;	 
		window.focus();
		
	}
	
	var name="userlist";
	if (wObjList[name]!=null) {
		refreshUsersList(chatMsgs.list);
	}
		
}

var callback_ping =
{
  success:pingResponse,
  failure: pingResponseKO,
  argument: { }
};


function startPinging() {
	pingTimer=setInterval("ping()",15000);
}

function updateTimers() {
	chat_windows--;
	if (chat_windows==0) {
		clearInterval(pingTimer);
		pingTimer=setInterval("ping()",15000);	
	}

}

function getLang() {
	var data="op=getLang";
	var request = YAHOO.util.Connect.asyncRequest('GET', serverIMUrl+'?'+data, callback_getLang);

}

var getLangCompletedKO = function(o){
	if(o.responseText !== undefined){
		//alert("Il server non risponde. Chiudi questo pannello e riprova.");
	}
}

var getLangCompleted=function(ObjReq) {
	var langText = ObjReq.responseText;
	var _TTim = YAHOO.lang.JSON.parse(langText);
	startPinging();
}

var callback_getLang =
{
  success:getLangCompleted,
  failure: getLangCompletedKO,
  argument: { }
};

/* replacing emoticons with images */
function getChatEmoticon(name) {
	var ext="gif";
	var res ="<img alt=\""+name+"\" title=\""+name+"\" src=\"";
	res+=pathImage+"/"+name+"."+ext+"\" />";
	
	return res;
}

function replaceEmoticon(txt) {
	
		var res=txt;
		
		res=res.replace(/;[-]?\)/i, getChatEmoticon("wink_smile"));
		res=res.replace(/:[-]?\|/i, getChatEmoticon("whatchutalkingabout_smile"));
		res=res.replace(/:[-]?P/i, getChatEmoticon("tounge_smile"));
		res=res.replace(/o:[-]?\)/i, getChatEmoticon("angel_smile"));
		res=res.replace(/:[-]?\)/i, getChatEmoticon("regular_smile"));
		res=res.replace(/:[-]?\(/i, getChatEmoticon("sad_smile"));
		res=res.replace(/:?\'[-]?(\(|\[)/i, getChatEmoticon("cry_smile"));
		res=res.replace(/:[-]?o/i, getChatEmoticon("omg_smile"));
		res=res.replace(/8[-]?\)/i, getChatEmoticon("shades_smile"));
		res=res.replace(/:[-]?s/i, getChatEmoticon("confused_smile"));
		res=res.replace(/X[-]?\(/i, getChatEmoticon("devil_smile"));
		res=res.replace(/\=\(\(/i, getChatEmoticon("broken_heart"));
		res=res.replace(/:[-]?x/i, getChatEmoticon("heart"));
		res=res.replace(/:[-]?d/i, getChatEmoticon("teeth_smile"));
		res=res.replace(/\[OK\]/, getChatEmoticon("thumbs_up"));
		res=res.replace(/\[BAD\]/, getChatEmoticon("thumbs_down"));
		res=res.replace(/\[IDEA\]/, getChatEmoticon("lightbulb"));
		res=res.replace(/\[MAIL\]/, getChatEmoticon("envelope"));
		
		return res;
}
/*------------------------------------------------------------*/


function stopTimer() {
   clearInterval(pingTimer);
}

YAHOO.util.Event.addListener(window, "load", getLang);
//YAHOO.util.Event.addListener(window, "load", openUsersList);
YAHOO.util.Event.addListener(window, "unload", stopTimer);