var Server = {
    dataReceivedCallback : null,
    errorCallback : null,
    doSort : false,
    retries : 0,
    curGuid : "",
    tzCorrection : 0,
    XHRObj : null
};


Server.init = function()
{
    var success = true;   

    if (this.XHRObj) {
        this.XHRObj.destroy();  
        this.XHRObj = null;
    }
    
    return success;
};

Server.setSort = function (val) {
	this.doSort = val;
};
//---------------------------------------------
Server.fetchVideoList = function(url) {

	$.ajax({
		url: url,
		type : "GET",
		success : function(data, status, XHR ) {
			Main.log("Server.fetchVideoList Success Response - status= " + status + " mime= " + XHR.responseType + " data= "+ data);

			$(data).find("item").each(function () {
				var title = $(this).find('title').text();
//				var link = $(this).find('link').text();
				var link = $(this).find('enclosure').attr('url');
				var guid = $(this).find('guid').text();
				var programme = $(this).find('programme').text();
				var description = $(this).find('description').text();
				var startVal = parseInt($(this).find('start').text());
				var durVal = parseInt($(this).find('duration').text());
				var fps = parseFloat($(this).find('fps').text());
				var ispes = $(this).find('ispes').text();
				var isnew = $(this).find('isnew').text();
				var num = parseInt($(this).find('number').text());
//				Main.log("Server.fetchVideoList: title= " + title + " start= " + startVal + " dur= " + durVal + " fps= " + fps);
				
				if (Main.state == Main.eLIVE) {
					Epg.guidTitle[guid] = title;
				}

                var title_list = title.split("~");
                Data.addItem( title_list, {link : link, prog: programme, desc: description, guid : guid, start: startVal, 
                			dur: durVal, ispes : ispes, isnew : isnew, fps : fps, num : num});              	
							
				}); // each

			Data.completed(Server.doSort);

            if (Server.dataReceivedCallback) {
                Server.dataReceivedCallback();
            }
			
		},
		error : function (jqXHR, status, error) {
			Main.logToServer("Server.fetchVideoList Error Response - status= " + status + " error= "+ error);
			Display.showPopup("Error with XML File: " + status);
			Server.retries ++;
		},
		parsererror : function () {
			Main.logToServer("Server.fetchVideoList parserError  " );
			Display.showPopup("Error in XML File");
			Server.retries ++;
            if (Server.errorCallback != null) {
            	Server.errorCallback("XmlError");
            }

		}
	});
};

Server.updateEntry = function(guid) {
	
	Server.curGuid = Data.getCurrentItem().childs[Main.selectedVideo].payload.guid;

	//url is sufficed with ?guid
	var url = Config.serverUrl + "/recordings.xml?guid="+guid;
	Main.logToServer(" Server.updateEntry: guid= " + guid);
	
	$.ajax({
		url: url,
		type : "GET",
		success : function(data, status, XHR ) {
			Main.logToServer("Server.updateEntry Success Response - status= " + status + " mime= " + XHR.responseType + " data= "+ data);

			$(data).find("item").each(function () {
				var title = $(this).find('title').text();
//				var link = $(this).find('link').text();
				var link = $(this).find('enclosure').attr('url');
				var guid = $(this).find('guid').text();
				var programme = $(this).find('programme').text();
				var description = $(this).find('description').text();
				var startVal = parseInt($(this).find('start').text());
				var durVal = parseInt($(this).find('duration').text());
				var fps = parseFloat($(this).find('fps').text());
				var ispes = $(this).find('ispes').text();
				var isnew = $(this).find('isnew').text();
				var num = parseInt($(this).find('number').text());
				Main.logToServer("Server.updateEntry: title= " + title + " start= " + startVal + " dur= " + durVal + " fps= " + fps);
				
                var title_list = title.split("~");
                Data.addItem( title_list, {link : link, prog: programme, desc: description, guid : guid, start: startVal, 
                			dur: durVal, ispes : ispes, isnew : isnew, fps : fps, num : num});              	
							
				}); // each

			Data.assets.sortPayload(Data.sortType);

			// check, whether Main.selectedVideo still points to the entry with guid
			if (Data.getCurrentItem().childs[Main.selectedVideo].payload.guid != Server.curGuid) {
				Main.logToServer("Server.updateEntry: curGuid has changed: curGuid= " + Server.curGuid);
				Main.logToServer("Server.updateEntry: selVid= "+ Data.getCurrentItem().childs[Main.selectedVideo].payload.guid);
				Main.selectedVideo = Main.selectedVideo+1;
				Main.logToServer("Server.updateEntry: curGuid has changed: selVid+1"+ Data.getCurrentItem().childs[Main.selectedVideo].payload.guid);
			}

			var first_item = Main.selectedVideo - Display.currentWindow;
		    if (first_item < 0 )
		    	first_item = 0;

        	Display.setVideoList(Main.selectedVideo, first_item); 
        	// Main.selectedVideo does not fit anymore!!!!!
        	// should do a general reset (jump to 0), when a new element is added
        	// should reset to zero
        	// plus update notif
			Main.logToServer(" done");
			
		},
		error : function (jqXHR, status, error) {
			Main.logToServer("Server.updateEntry Error Response - status= " + status + " error= "+ error);
			Display.showPopup("Error with XML File: " + status);
			Server.retries ++;
		},
		parsererror : function () {
			Main.logToServer("Server.updateEntry parserError  " );
			Display.showPopup("Error in XML File");
			Server.retries ++;
            if (Server.errorCallback != null) {
            	Server.errorCallback("XmlError");
            }

		}
	});
};

//---------------------------------------------

Server.updateVdrStatus = function (){
	Main.log ("get VDR Status");
	$.ajax({
		url: Config.serverUrl + "/vdrstatus.xml",
		type : "GET",
		success : function(data, status, XHR){
			var ts_vdr = $(data).find('vdrTime').text();
			
			try {
				var ts = ts_vdr.split("T")[1];
				var s = ts.split(":");
				if (s.length == 3) {
					var now = ((new Date).getHours());
					Config.tzCorrection = now - s[0];	
					// if Config.tzCorrection larger zero, then TV is ahead
					// thus, I need to substract Config.tzCorrection from the TV time
//					Config.tzCorrection = 1;	
					Main.logToServer("Server.updateVdrStatu: tzCor= " + Config.tzCorrection);
				}
				else
					Main.logToServer("tzCor WARNING");

			}
			catch (e) {
				Main.log ("ERROR in tzCor (Old plugin?): " + e);
			}

			var free = $(data).find('free').text() / 1024.0;
//			var used = $(data).find('used').text() / 1024.0;
//			var percent = $(data).find('percent').text();
	
			var unit = "GB";
			var free_str = free.toFixed(2);
			if (free_str.length > 6) {
				free = free / 1024.0;
				free_str = free.toFixed(2);
				unit = "TB";
			}
			$("#logoDisk").text("Free: " +free_str + unit);
			$("#selectDisk").text("Free: " +free_str + unit);
			
		},
		error: function(jqXHR, status, error){
			Main.log("VdrStatus: Error");
			}
	});
};


Server.getResume = function (guid) {
//	Main.log ("***** getResume *****");
	$.ajax({
		url: Config.serverUrl + "/getResume.xml",
		type : "POST",
		data : "filename:" + guid +"\n", 
		success : function(data, status, XHR ) {
			Main.log("**** Resome Success Response - status= " + status + " mime= " + XHR.responseType + " data= "+ data);

			var resume_str = $(data).find("resume").text();
			if (resume_str != "") {
				var resume_val = parseFloat(resume_str);
				Main.log("resume val= " + resume_val );
				Main.logToServer("resume val= " + resume_val );
				Player.resumePos = resume_val;
				Player.playVideo( resume_val);
			}
			else {
	    		Display.hide();
	        	Display.showProgress();
				Player.playVideo(-1);
			}

		},
		error : function (jqXHR, status, error) {
			Main.log("**** Resome Error Response - status= " + status + " error= "+ error);
    		Display.hide();
        	Display.showProgress();
			Player.playVideo(-1);
		}
	});
};

Server.saveResume = function() {
	var msg = ""; 
    msg += "filename:" + Data.getCurrentItem().childs[Main.selectedVideo].payload.guid + "\n"; 
    msg += "resume:"+ (Player.curPlayTime/1000) + "\n" ;
    	
	$.post(Config.serverUrl + "/setResume.xml", msg, function(data, textStatus, XHR) {
		Main.logToServer("SaveResume Status= " + XHR.status );
	}, "text");

};

Server.deleteRecording = function(guid) {
	Main.log("Server.deleteRecording guid=" + guid);
	Main.logToServer("Server.deleteRecording guid=" + guid);
	Notify.handlerShowNotify("Deleting...", false);

	$.ajax({
		url: Config.serverUrl + "/deleteRecording.xml?id=" +guid,
		type : "POST",
		success : function(data, status, XHR ) {
			Notify.showNotify("Deleted", true);
			Data.deleteElm(Main.selectedVideo);
			if (Main.selectedVideo >= Data.getVideoCount())
				Main.selectedVideo = Data.getVideoCount() -1;
			Server.updateVdrStatus();
			Display.setVideoList(Main.selectedVideo, (Main.selectedVideo - Display.currentWindow));
			Main.logToServer("Server.deleteRecording: Success" );
			},
		error : function (XHR, status, error) {
			Main.logToServer("Server.deleteRecording: Error" );

			// show popup
			Notify.showNotify("Error", true);
		}
	});
};

Server.deleteUrls = function (guid) {
	Main.log("Server.deleteUrls");
	Main.logToServer("Server.deleteUrls guid=" + guid);
	Notify.handlerShowNotify("Deleting...", false);

	$.ajax({
		url: Config.serverUrl + "/deleteYtUrl?guid=" +guid,
		type : "POST",
		success : function(data, status, XHR ) {
			Notify.showNotify("Deleted", true);
			Data.deleteElm(Main.selectedVideo);
			if (Main.selectedVideo >= Data.getVideoCount())
				Main.selectedVideo = Data.getVideoCount() -1;
			Server.updateVdrStatus();
			Display.setVideoList(Main.selectedVideo, (Main.selectedVideo - Display.currentWindow));
			Main.logToServer("Server.deleteUrls: Success" );
			},
		error : function (XHR, status, error) {
			Main.logToServer("Server.deleteUrls: Error" );
			Notify.showNotify(status, true);

			// show popup
//			Notify.showNotify("Error", true);
		}
	});

};

Server.notifyServer = function (state) {
	Main.log("Server.notifyServer state="+state +"&mac=" + Network.ownMac + "&ip=" + Network.ownIp);
	$.ajax({
		url: Config.serverUrl + "/clients?state="+state +"&mac=" + Network.ownMac + "&ip=" + Network.ownIp,
		type : "GET",
		success : function(data, status, XHR ) {
			Main.log("Config.notifyServer OK" ) ;
		},
		error : function (XHR, status, error) {
			Main.log("Config.notifyServer failed" ) ;
		}
	});	
};


var HeartbeatHandler = {
	timeoutObj : null,
	isActive : false
};


HeartbeatHandler.start = function(){
	if (this.isActive ==true)
		window.clearTimeout(this.timeoutObj);
		
	this.isActive = true;
	HeartbeatHandler.update();
};

HeartbeatHandler.update = function() {
	Server.notifyServer("running");
	this.timeoutObj = window.setTimeout(function() {HeartbeatHandler.update(); }, (60*1000)); // once every 1min
};

HeartbeatHandler.stop = function(){
	if (this.isActive == false )
		return;

	window.clearTimeout(this.timeoutObj);
	this.isActive = false;
};

function addTimer(guid) {
	this.successCallback = null;
	this.errorCallback = null;
	this.guid = guid;
	this.request();
};

addTimer.prototype.request = function () {
	var url =Config.serverUrl + "/addTimer.xml?guid="+this.guid;
	Main.log("addTimer request url= " + url);

	$.ajax({
		url: url,
		type : "GET",
		context : this,
		timeout : 400,
		success : function(data, status, XHR ) {
			Main.log ("addTimer for Inst= " + this.guid +" status: " + ((status != null) ? status : "null"));  	
		},
		error : function (XHR, status, error) {
	    	Main.log ("addTimer for Error Inst= " + this.guid+" status: " + ((status != null) ? status : "null")); 
	    	if (XHR.status == 400) {
	    		
	    		Display.showPopup("Timer creation failed channel= "+this.guid + " Text= " + XHR.responseText, true);	    		
	    	}
	    	else
	    		Display.showPopup("Timer creation failed channel= "+this.guid + " code= " + XHR.status, true);	    		
    		
		}
	});

};