// GridTracker ©2020 N0TTL 
var g_gtEngineInterval = null;
var g_chatRecvFunctions = {
    "uuid" : gtChatSetUUID,
    "list" : gtChatNewList,
    "info" : gtChatUpdateCall,
    "drop" : gtChatRemoveCall,
    "mesg" : gtChatMessage,
	"o"	   : gtSpotMessage
};

var ChatState = Object();
ChatState.none		= -1;
ChatState.idle		= 0;
ChatState.connect	= 1;
ChatState.connecting= 2
ChatState.connected	= 3;
ChatState.status	= 4;
ChatState.closed	= 5;
ChatState.error		= 6;

var g_gtStateToFunction = {
	"-1": gtSetIdle,
	"0"	: gtCanConnect,
	"1" : gtConnectChat,
	"2" : gtConnecting,
	"3" : gtChatSendUUID,
	"4"	: gtStatusCheck,
	"5" : gtInError,
	"6" : gtClosedSocket
};

var g_gtChatSocket = null;
var g_gtFlagPins = Object();
var g_gtMessages = Object();
var g_gtUnread = Object();
var g_gtIdToCid = Object();
var g_gtCallsigns = Object();
var g_gtSentAwayToCid = Object();

var g_gtState = ChatState.none;
var g_gtStatusCount = 0;
var g_gtStatusTime = 500;
var g_gtMaxChatMessages = 100;
var g_gtNeedUsersList = true;

var g_gtLiveStatusUpdate = false;

var myChatId = 0;

var myRoom = 0;
var g_gtChatlistChangeCount = 0;
var g_gtCurrentMessageCount = 0;


function gtConnectChat()
{
	if ( g_gtChatSocket != null )
	{
		// we should start over
		g_gtState = ChatState.error;
		return;
	}
	
	var rnd= parseInt (Math.random()*10)+18260;
	try 
	{
		g_gtState = ChatState.connecting;
		g_gtChatSocket = new WebSocket('wss://tagloomis.com:'+rnd);
	}
	catch (e) 
	{
		g_gtState = ChatState.error;
		return;
	}

	g_gtChatSocket.onopen = function()
	{
		g_gtState = ChatState.connected;
	};

	g_gtChatSocket.onmessage = function (evt) 
    { 
    	if ( g_appSettings.gtShareEnable == true )
    	{
			var jsmesg = false;
			try 
			{
				jsmesg = JSON.parse(evt.data);
			}
			catch(err) 
			{
				// bad message, dumping client
				g_gtState = ChatState.error;
				return;
			}
			if ( typeof jsmesg.type == "undefined" )
			{
				g_gtState = ChatState.error;
				delete jsmesg;
				return;
			}
		
			if ( jsmesg.type in g_chatRecvFunctions )
			{
				g_chatRecvFunctions[jsmesg.type](jsmesg);
				delete jsmesg;
			}
			else
			{
				g_gtState = ChatState.error;
				delete jsmesg;
				return;
			}
		}
    };

   g_gtChatSocket.onerror = function()
   { 
		g_gtState = ChatState.error;
   };
   
   g_gtChatSocket.onclose = function()
   { 
		g_gtState = ChatState.closed;
   };
}


function gtConnecting()
{

}


function gtInError()
{
	closeGtSocket();
}

function gtChatSendClose()
{
	msg = Object();
	msg.type = "close";
	msg.uuid = g_appSettings.chatUUID;
	
	sendGtJson(JSON.stringify(msg));
}

function closeGtSocket()
{
	if ( g_gtChatSocket != null )
	{
		gtChatSendClose();
		
		if ( g_gtChatSocket.readyState != WebSocket.CLOSED )
			g_gtChatSocket.close();

		if ( g_gtChatSocket.readyState === WebSocket.CLOSED )
		{	
			delete g_gtChatSocket;
			g_gtChatSocket = null;
			g_gtState = ChatState.none;
		}
	}
	else
		g_gtState = ChatState.none;
}


function gtClosedSocket()
{
	delete g_gtChatSocket;
	g_gtChatSocket = null;
	g_gtState = ChatState.none;
}


function gtCanConnect()
{
	g_gtState = ChatState.connect;
}


function gtSetIdle()
{
	g_gtStatusCount = 0;
	g_gtNeedUsersList = true;
	g_gtState = ChatState.idle;
	g_lastGtStatus = "";
}


function gtStatusCheck()
{
	if ( g_gtStatusCount > 0 )
	{
		g_gtStatusCount--;
	}
	if ( g_gtStatusCount == 0 || g_gtLiveStatusUpdate == true )
	{
		if ( g_gtLiveStatusUpdate == true )
		{
			g_gtLiveStatusUpdate = false;
		}
		else
		{
			g_lastGtStatus = "";
			g_gtStatusCount = g_gtStatusTime;
		}
		gtChatSendStatus();
	}
	if ( g_gtNeedUsersList == true  )
	{
		g_gtNeedUsersList = false;
		gtChatGetList();
	}

}


function sendGtJson( json )
{
	if ( g_gtChatSocket != null )
	{
		if ( g_gtChatSocket.readyState  === WebSocket.OPEN )
		{
			g_gtChatSocket.send(json);
		}
		else
		{
			if ( g_gtChatSocket.readyState === WebSocket.CLOSED )
			{
				g_gtState = ChatState.closed;
			}		
		}
	}
	else
		g_gtState = ChatState.closed;
}


var g_lastGtStatus = "";

function gtChatSendStatus()
{	
	var msg = Object();
	msg.type = "status";
	msg.uuid = g_appSettings.chatUUID;
	
	msg.call = myDEcall;
	msg.grid = myRawGrid;
	msg.freq = myRawFreq;
	msg.mode = myMode;
	msg.band = myBand;
	msg.canmsg = (g_appSettings.gtMsgEnable == true);
	msg.o = (g_appSettings.gtSpotEnable == true ? 1:0);
	msg = JSON.stringify(msg);
	
	if ( msg != g_lastGtStatus )
	{
		sendGtJson(msg);
		g_lastGtStatus = msg;
	}
}

function gtChatSendSpots( spotsObject )
{	
	var msg = Object();
	msg.type = "o";
	msg.uuid = g_appSettings.chatUUID;
	msg.o = spotsObject;
	msg = JSON.stringify(msg);
	sendGtJson(msg);

}

function gtChatRemoveCall(jsmesg)
{
	var id = jsmesg.id;
	if ( id in g_gtIdToCid )
	{
		var cid = g_gtIdToCid[id];
		if ( cid in g_gtFlagPins )
		{
			delete g_gtFlagPins[cid].ids[id];
			if ( Object.keys(g_gtFlagPins[cid].ids).length == 0 )
			{
				if ( g_gtFlagPins[cid].pin != null )
				{
					// remove pin from map here
					if ( g_layerSources["gtflags"].hasFeature(g_gtFlagPins[cid].pin) )
						g_layerSources["gtflags"].removeFeature(g_gtFlagPins[cid].pin);
					delete g_gtFlagPins[cid].pin;
					g_gtFlagPins[cid].pin = null;
				}
				g_gtFlagPins[cid].live = false;
				notifyNoChat(cid);
				if ( !(cid in g_gtMessages) )
				{
					delete g_gtCallsigns[g_gtFlagPins[cid].call];
					delete g_gtFlagPins[cid];
				}
				
				updateChatWindow();
			}
		}
		delete g_gtIdToCid[id];
	}
}


function gtChatUpdateCall(jsmesg)
{
	var id = jsmesg.id;
	var cid = jsmesg.cid;
			
	if ( cid in g_gtFlagPins )
	{
		g_gtFlagPins[cid].ids[id] = true;
		// Did they move grid location?
		if ( g_gtFlagPins[cid].pin != null )
		{
			// remove pin from map here
			if ( g_layerSources["gtflags"].hasFeature(g_gtFlagPins[cid].pin) )
				g_layerSources["gtflags"].removeFeature(g_gtFlagPins[cid].pin);
			delete g_gtFlagPins[cid].pin;
			g_gtFlagPins[cid].pin = null;
		}
	}
	else
	{
		g_gtFlagPins[cid] = Object();
		g_gtFlagPins[cid].pin = null;
	
		g_gtFlagPins[cid].ids = Object()
		g_gtFlagPins[cid].ids[id] = true;		
	}
	g_gtIdToCid[jsmesg.id] = jsmesg.cid;

	g_gtFlagPins[cid].cid = jsmesg.cid;
	g_gtFlagPins[cid].call = jsmesg.call;
	g_gtFlagPins[cid].grid = jsmesg.grid;
	g_gtFlagPins[cid].freq = jsmesg.freq;
	g_gtFlagPins[cid].band = jsmesg.band;
	g_gtFlagPins[cid].mode = jsmesg.mode;
	g_gtFlagPins[cid].canmsg = jsmesg.canmsg;
	g_gtFlagPins[cid].o = jsmesg.o;
	g_gtFlagPins[cid].dxcc = callsignToDxcc(jsmesg.call);
	g_gtFlagPins[cid].live = true;
	// Make a pin here
	if ( g_gtFlagPins[cid].pin == null )
	{
		makeGtPin(g_gtFlagPins[cid]);
		if ( g_gtFlagPins[cid].pin != null )
			g_layerSources["gtflags"].addFeature(g_gtFlagPins[cid].pin);
	}
	g_gtChatlistChangeCount++;
	g_gtCallsigns[g_gtFlagPins[cid].call] = cid;
	updateChatWindow();
}




function gtChatGetList()
{
	msg = Object();
	msg.type = "list";
	msg.uuid = g_appSettings.chatUUID;
	
	sendGtJson(JSON.stringify(msg));
}


function redrawPins()
{
	clearGtFlags();
	for ( cid in g_gtFlagPins )
	{
		if ( g_gtFlagPins[cid].pin != null )
		{
			delete g_gtFlagPins[cid].pin;
			g_gtFlagPins[cid].pin = null;
		}
		
		makeGtPin(g_gtFlagPins[cid]);
		
		if ( g_gtFlagPins[cid].pin != null )
			g_layerSources["gtflags"].addFeature(g_gtFlagPins[cid].pin);
	}
}

function makeGtPin( obj )
{
	try {
	if ( obj.pin )
	{
		if ( g_layerSources["gtflags"].hasFeature(obj.pin) )
			g_layerSources["gtflags"].removeFeature(obj.pin);
		delete obj.pin;
		obj.pin = null;
	}

	if (typeof obj.grid == 'undefined' ||  obj.grid == null )
		return;
	
	if ( obj.grid.length != 4 && obj.grid.length != 6 )
		return;
	
	if ( validateGridFromString(obj.grid,null) == false )
		return;
	
	if ( g_appSettings.gtFlagImgSrc == 2 && ( obj.mode != myMode || obj.band != myBand) )
		return;
	
	var LL = squareToLatLongAll(obj.grid);
	var myLonLat = [
		LL.lo2 - (LL.lo2 - LL.lo1) / 2,
		LL.la2 - ((LL.la2 - LL.la1) / 2)
	];

	obj.pin = iconFeature( ol.proj.fromLonLat(myLonLat), g_gtFlagIcon, 100);
	obj.pin.key = obj.cid;
	obj.pin.isGtFlag = true;
	obj.pin.size = 1;
	}
	catch (e)
	{
	}
	
}

function gtChatNewList(jsmesg)
{
	clearGtFlags();

	for ( cid in g_gtFlagPins )
	{
		g_gtFlagPins[cid].live = false;
		if ( !(cid in g_gtMessages) )
		{
			delete g_gtFlagPins[cid];
		}
	}
	
	for ( key in jsmesg.data.calls )
	{
		var cid = jsmesg.data.cid[key];
		var id = jsmesg.data.id[key];
		if ( id != myChatId )
		{
			if ( cid in g_gtFlagPins )
			{
				g_gtFlagPins[cid].ids[id] = true;
			}
			else
			{
				g_gtFlagPins[cid] = Object();
				g_gtFlagPins[cid].ids = Object()
				g_gtFlagPins[cid].ids[id] = true;
				g_gtFlagPins[cid].pin = null;
			}

			g_gtIdToCid[id] = cid;
			g_gtFlagPins[cid].call = jsmesg.data.calls[key];
			g_gtFlagPins[cid].grid = jsmesg.data.grid[key];
			g_gtFlagPins[cid].freq = jsmesg.data.freq[key];
			g_gtFlagPins[cid].band = jsmesg.data.band[key];
			g_gtFlagPins[cid].mode = jsmesg.data.mode[key];
			g_gtFlagPins[cid].cid = cid;
			g_gtFlagPins[cid].canmsg = jsmesg.data.canmsg[key];
			g_gtFlagPins[cid].o = jsmesg.data.o[key];
			g_gtFlagPins[cid].dxcc = callsignToDxcc(g_gtFlagPins[cid].call);
			g_gtFlagPins[cid].live = true;
			g_gtCallsigns[g_gtFlagPins[cid].call] = cid;	
			makeGtPin(g_gtFlagPins[cid]);
			if ( g_gtFlagPins[cid].pin != null )
				g_layerSources["gtflags"].addFeature(g_gtFlagPins[cid].pin);
		}
	}
	g_gtChatlistChangeCount++;
	
	updateChatWindow();
		

}

function appendToHistory(cid, jsmesg)
{
	if ( !(cid in g_gtMessages) )
	{
		g_gtMessages[cid] = Object();	
		g_gtMessages[cid].history = Array();
	}
	
	g_gtMessages[cid].history.push(jsmesg);
	while ( g_gtMessages[cid].history.length > g_gtMaxChatMessages )
	{
		g_gtMessages[cid].history.shift();
	}
}


function htmlEntities(str) {
    return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
} 

function gtChatMessage(jsmesg)
{
	if ( g_appSettings.gtMsgEnable == true )
	{
		var cid = jsmesg.cid;
		jsmesg.when = Date.now();
		try 
		{
			jsmesg.msg =  (new Buffer(jsmesg.msg,'base64').toString('utf8')); 
			jsmesg.msg = htmlEntities(jsmesg.msg);
		}
		catch (e) 
		{
			jsmesg.msg  = "Corrupt message recieved";
		}
		
		if ( jsmesg.call != null && jsmesg.call != "" && jsmesg.call != "NOCALL" )
		{
			appendToHistory(cid, jsmesg);
			g_gtUnread[cid] = true;
			g_gtCurrentMessageCount++;

			
			if ( newChatMessage(cid,jsmesg) == false )
				alertChatMessage();
			
			if ( g_msgSettings.msgAwaySelect == 1 && !(cid in g_gtSentAwayToCid) )
			{
				g_gtSentAwayToCid[cid] = true;
				gtSendMessage( "Away message [ " +g_msgSettings.msgAwayText+" ]", cid );
			}
		}
	
	}
}


function gtSendMessage(message, who)
{
	msg = Object();
	msg.type = "mesg";
	msg.uuid = g_appSettings.chatUUID;
	msg.cid = who;
	msg.msg = (new Buffer(message).toString('base64')); 
	sendGtJson(JSON.stringify(msg));
	msg.msg = htmlEntities(message);
	msg.id = 0;
	msg.when = Date.now();
	appendToHistory(who,msg);
}


function gtChatSendUUID()
{
	var msg = Object();
	msg.type = "uuid";
	if ( g_appSettings.chatUUID != "" )
		msg.uuid = g_appSettings.chatUUID;
	msg.call = myDEcall;
		
	sendGtJson(JSON.stringify(msg));
}


function gtChatSetUUID(jsmesg)
{
	g_appSettings.chatUUID = jsmesg.uuid;
	myChatId = jsmesg.id;

	gtChatSendStatus();
	
	g_gtState = ChatState.status;
}


function gtChatStateMachine()
{
	if ( g_appSettings.gtShareEnable == true && g_mapSettings.offlineMode == false )
	{
		var now = timeNowSec();
		g_gtStateToFunction[g_gtState]();
		
		if ( Object.keys(g_gtUnread).length > 0 && now % 2 == 0 )
		{
			msgImg.style.webkitFilter = "invert(1)";
		}
		else
			msgImg.style.webkitFilter = "";
		
		if ( g_msgSettings.msgFrequencySelect > 0 && Object.keys(g_gtUnread).length > 0 )
		{
			if ( now - g_lastChatMsgAlert > (g_msgSettings.msgFrequencySelect*60) )
			{
				alertChatMessage();
			}
		}
		
	}
	else
	{
		closeGtSocket();
		g_gtChatlistChangeCount = 0;
		g_lastGtStatus = "";
	}
}




function gtSpotMessage (jsmesg)
{
	addNewOAMSSpot( jsmesg.cid, jsmesg.db);
}

function gtChatSystemInit()
{
	g_gtEngineInterval = setInterval(gtChatStateMachine, 1000);
}

function showGtFlags()
{
	if (g_appSettings.gtFlagImgSrc > 0)
	{
		if (g_mapSettings.offlineMode == false)
		{
			redrawPins();
			g_layerVectors["gtflags"].setVisible(true);
		}
		else
		{
			 g_layerVectors["gtflags"].setVisible(false);
		}
	}
	else
		 g_layerVectors["gtflags"].setVisible(false);
}

function clearGtFlags()
{
    g_layerSources["gtflags"].clear();
}

function toggleGtMap()
{
    g_appSettings.gtFlagImgSrc += 1;
	g_appSettings.gtFlagImgSrc %= 3;
    gtFlagImg.src = g_gtFlagImageArray[g_appSettings.gtFlagImgSrc];
	if ( g_spotsEnabled == 1 && g_receptionSettings.mergeSpots == false)
		return;
    if (g_appSettings.gtFlagImgSrc > 0)
    {
		redrawPins();
        g_layerVectors["gtflags"].setVisible(true);
    }
    else
    {
        g_layerVectors["gtflags"].setVisible(false);
    }
}

function notifyNoChat(id)
{
	if (g_chatWindowHandle != null )
	{
		try {
		g_chatWindowHandle.window.notifyNoChat(id);
		}
		catch (e)
		{
		}
	}
}

function updateChatWindow()
{
	if (g_chatWindowHandle != null )
	{
		try {
		g_chatWindowHandle.window.updateEverything();
		}
		catch (e)
		{
		}
	}
}

function newChatMessage(id, jsmesg)
{
	var hasFocus= false;
	if ( g_msgSettings.msgActionSelect == 1 )
		showMessaging();
	
	if (g_chatWindowHandle != null )
	{
		try 
		{
			hasFocus = g_chatWindowHandle.window.newChatMessage(id,jsmesg);
		}
		catch (e)
		{
		}
		updateChatWindow();
	}
	return hasFocus;
}

var g_lastChatMsgAlert = 0;

function alertChatMessage( )
{
	{
		if ( g_msgSettings.msgAlertSelect == 1 ) // Text to speech
		{
			speakAlertString(g_msgSettings.msgAlertWord);
		}
		if ( g_msgSettings.msgAlertSelect == 2 ) // Audible
		{
			playAlertMediaFile( g_msgSettings.msgAlertMedia);
		}
		g_lastChatMsgAlert = timeNowSec();
	}
}