-- Id: 12127
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=3521

--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC |
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  |
--|                                    Paypal: https://goo.gl/9Rj74e |
--|                    BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF  |
--|                BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg  |
--|           Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D  |
--|                   LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD  |
--+------------------------------------------------------------------+

function Init()
    indicator:name("Variable moving average Cross With Alert");
    indicator:description("Two Variable moving average Cross");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
   
   
     indicator.parameters:addGroup("Mode");  
	indicator.parameters:addString("Live", "End of Turn / Live", "", "Live");
    indicator.parameters:addStringAlternative("Live", "End of Turn", "", "End of Turn");
	indicator.parameters:addStringAlternative("Live", "Live", "", "Live");
   
   
    indicator.parameters:addGroup("Calculation");	
	
	
	indicator.parameters:addString("Price1", "Price Source", "", "close");
    indicator.parameters:addStringAlternative("Price1", "OPEN", "", "open");
    indicator.parameters:addStringAlternative("Price1", "HIGH", "", "high");
    indicator.parameters:addStringAlternative("Price1", "LOW", "", "low");
    indicator.parameters:addStringAlternative("Price1","CLOSE", "", "close");
    indicator.parameters:addStringAlternative("Price1", "MEDIAN", "", "median");
    indicator.parameters:addStringAlternative("Price1", "TYPICAL", "", "typical");
    indicator.parameters:addStringAlternative("Price1", "WEIGHTED", "", "weighted");	
	

    indicator.parameters:addInteger("Frame1", "Period", "", 12, 2, 2000);
	indicator.parameters:addInteger("Smoothing1", "Smoothing", "", 6, 1, 200);
	
	indicator.parameters:addString("Price2", "Price Source", "", "close");
    indicator.parameters:addStringAlternative("Price2", "OPEN", "", "open");
    indicator.parameters:addStringAlternative("Price2", "HIGH", "", "high");
    indicator.parameters:addStringAlternative("Price2", "LOW", "", "low");
    indicator.parameters:addStringAlternative("Price2","CLOSE", "", "close");
    indicator.parameters:addStringAlternative("Price2", "MEDIAN", "", "median");
    indicator.parameters:addStringAlternative("Price2", "TYPICAL", "", "typical");
    indicator.parameters:addStringAlternative("Price2", "WEIGHTED", "", "weighted");	
	
	indicator.parameters:addInteger("Frame2", "Period", "", 24, 2, 2000);
	indicator.parameters:addInteger("Smoothing2", "Smoothing", "", 12, 1, 200);

	
	 indicator.parameters:addGroup("Indicator Style");   
    indicator.parameters:addColor("color1", "Fast MA color", "MA color", core.rgb(0,255,0));
	indicator.parameters:addInteger("width1", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style1", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style1", core.FLAG_LINE_STYLE);
	
	indicator.parameters:addColor("color2", "Slow MA color", "MA color", core.rgb(255,0,0));
	indicator.parameters:addInteger("width2", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style2", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style2", core.FLAG_LINE_STYLE);
	


	
	indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addColor("Up", "Up Trend Color", "", core.rgb(0, 0, 255));
	indicator.parameters:addColor("Down", "Down Trend Color", "", core.rgb(0, 0, 255));
	indicator.parameters:addInteger("Size", "Label Size", "", 10, 1 , 100);
	
	indicator.parameters:addGroup("Alerts Sound");   
    indicator.parameters:addBoolean("PlaySound", "Play Sound", "", true);	
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);
	
	indicator.parameters:addGroup("Alerts Email");   
	indicator.parameters:addBoolean("SendEmail", "Send Email", "", true);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);
	indicator.parameters:addBoolean("Show", "Show Dialog box Alert", "", true);
	indicator.parameters:addBoolean("OnlyOnce", "Alert Once", "Subsequent Alert will be ignored.", false);	
	
	Parameters (1, "VARMA Cross")
 
	

	
	
end

function Parameters ( id, Label )
  
  
   indicator.parameters:addGroup(Label .. " Alert");
  
    indicator.parameters:addBoolean("ON"..id , "Show " .. Label .." Alert" , "", true);
    

    indicator.parameters:addFile("Up"..id, Label .. " Cross Over Sound", "", "");
    indicator.parameters:setFlag("Up"..id, core.FLAG_SOUND);
	
	indicator.parameters:addFile("Down"..id, Label .. " Cross Under Sound", "", "");
    indicator.parameters:setFlag("Down"..id, core.FLAG_SOUND);
	
	 indicator.parameters:addString("Label"..id, "Label", "", Label);

end 

local 	Number = 1;

-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- TODO: Refine the first period calculation for each of the output streams.
-- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries
-- Parameters block
local Up={};
local Down={};
local Label={};
local ON={};
local first;
local source = nil;
local Line;
local up={};
local down={};
local Size;
local Email;
local SendEmail;
local  RecurrentSound ,SoundFile  ;
local Show;
local Alert;
local Indicator;
local PlaySound;
local Live;
local FIRST=true;
local Price2, Price1;
local OnlyOnce;
local U={};
local D={};

local Smoothing2,Smoothing1, Frame1, Frame2;
local  slow, Slow;
local Fast, fast;
local OnlyOnceFlag;

-- Streams block
 
-- Routine
function Prepare(nameOnly)   
    
	OnlyOnceFlag=true;
	FIRST=true;
	OnlyOnce = instance.parameters.OnlyOnce;
	Show = instance.parameters.Show;
	Live = instance.parameters.Live;
	Price2 = instance.parameters.Price2;
	Price1 = instance.parameters.Price1;
	Frame1 = instance.parameters.Frame1;	
	Frame2 = instance.parameters.Frame2;
    Smoothing1 = instance.parameters.Smoothing1;
	Smoothing2 = instance.parameters.Smoothing2;
	 
	assert(core.indicators:findIndicator( "VARMA" ) ~= nil, "Please, download and install  VARMA.LUA indicator");
     
	source = instance.source; 

    -- Base name of the indicator.
    local name = profile:id() .. "(" .. source:name() .. ", " .. Price1.. ", " .. Frame1 .. ", " .. Smoothing1 .. ", " .. Price2 .. ", " .. Frame2 .. ", " .. Smoothing2 .. ")";
	instance:name(name);
	if nameOnly then
		return;
	end
	
	 -- Create short and long EMAs for the source
    assert(core.indicators:findIndicator("VARMA") ~= nil, "VARMA" .. " indicator must be installed");
    slow = core.indicators:create("VARMA", source[Price1], Frame1 ,Smoothing1);
	fast = core.indicators:create("VARMA", source[Price2], Frame2 ,Smoothing2);
	
	first=math.max(slow.DATA:first(),fast.DATA:first() );

    Slow = instance:addStream("Slow", core.Line, name .. ".Slow", "Slow", instance.parameters.color2,  first);
	Slow:setWidth(instance.parameters.width2);
    Slow:setStyle(instance.parameters.style2);
	
	Fast = instance:addStream("Fast", core.Line, name .. ".Fast", "Fast", instance.parameters.color1,  first);
	Fast:setWidth(instance.parameters.width1);
    Fast:setStyle(instance.parameters.style1);
	   
	Initialization();
  
end


function  Initialization ()
     Size=instance.parameters.Size;
	 SendEmail = instance.parameters.SendEmail;
	 
	 local i;
	 for i = 1, Number , 1 do 
	  Label[i]=instance.parameters:getString("Label" .. i);
	  ON[i]=instance.parameters:getBoolean("ON" .. i);
	 end
	 
	 
	 

    if SendEmail then
        Email = instance.parameters.Email;
    else
        Email = nil;
    end
    assert(not(SendEmail) or (SendEmail and Email ~= ""), "E-mail address must be specified");
	
	
	 PlaySound = instance.parameters.PlaySound;
    if PlaySound then
    
	  for i = 1, Number , 1 do 
	  Up[i]=instance.parameters:getString("Up" .. i);
	  Down[i]=instance.parameters:getString("Down" .. i);
	  end
	
    else 
	
	  for i = 1, Number , 1 do 
       Up[i]=nil;
	  Down[i]=nil;
	  end
		
    end
    
        for i = 1, Number , 1 do 
	  assert(not(PlaySound) or (PlaySound and Up[i] ~= "") or (PlaySound and Up[i] ~= ""), "Sound file must be chosen"); 
	 assert(not(PlaySound) or (PlaySound and Down[i] ~= "") or (PlaySound and Down[i] ~= ""), "Sound file must be chosen");
	end
	 
    RecurrentSound = instance.parameters.RecurrentSound;
	
	for i = 1, Number , 1 do 
	U[i] = nil;
	D[i] = nil;
	
		if ON[i] then
		up[i] = instance:createTextOutput ("Up", "Up", "Wingdings", Size, core.H_Center, core.V_Center, instance.parameters.Up, 0);
		down[i] = instance:createTextOutput ("Dn", "Dn", "Wingdings", Size, core.H_Center, core.V_Center, instance.parameters.Down, 0);
		end
	end
		
	

	
end	


 function Calculate(period, mode)
 
   
	
	 slow:update(mode);
	 fast:update(mode);

	 if   period < first then
	return;
	end
	
	Slow[period]= slow.DATA[period];
	Fast[period]= fast.DATA[period];
 
 end
 

-- Indicator calculation routine
-- TODO: Add your code for calculation output values
function Update(period, mode) 



    Calculate(period, mode);
	
	
	local i;
	for i = 1, Number , 1 do
		  if ON[i] then
		 down[i]:setNoData (period); 
		 up[i]:setNoData (period);
		 end
   end	 
   
   if period < first then
return;
end
	
    Activate (1, period)
 
end

function Activate (id, period)

   local Shift=0;
   

   if Live~= "Live" then
	period=period-1;
	Shift=1;
	end
 
	  if id == 1  and ON[id]  then
	  
	       
			if Slow[period] > Fast[period]
			and Slow[period-1] <= Fast[period-1]
			then
			           
						     up[id]:set(period , Slow[period], "\108");	
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  then
							  OnlyOnceFlag=false;
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over", period);
							    
							        if Show then
									Pop(Label[id], " Cross Over " );  	
								    end
								 
							  end
			elseif  Slow[period] < Fast[period]
			and Slow[period-1] >= Fast[period-1]
            then			
			
			            			 
			               down[id]:set(period , Slow[period], "\108");	  						   
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1-Shift
							 and not FIRST 
							 then
							 OnlyOnceFlag=false;
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert( Label[id] , " Cross Under", period);	
								 if Show then
									Pop(Label[id], " Cross Under " );  	
								 end
							 
			                  end			   
	         end
			
	  
	 
	  end
	  
		   
        if FIRST then
        FIRST=false;      
        end		

end


function AsyncOperationFinished (cookie, success, message)
end


function Pop(label , note)

   core.host:execute ("prompt", 1, label ,
   " ( " .. source:instrument() .. " : " .. source:barSize() .. " ) "  ..   label .. " : " .. note );


end

function SoundAlert(Sound)
 if not PlaySound then
 return;
 end

  if OnlyOnce and OnlyOnceFlag== false then
 return;
 end
 
 terminal:alertSound(Sound, RecurrentSound);
end

 

function EmailAlert( label , Subject, period)

if not SendEmail then
return
end

 if OnlyOnce and OnlyOnceFlag== false then
 return;
 end
 
    local date = source:date(period);
	local DATA = core.dateToTable (date);
	
    
   local delim = "\013\010";  
   local Note=  profile:id().. delim.. " Label : " ..label  .. delim .. " Alert : " .. Subject ;   
   local Symbol= "Instrument : " .. source:instrument() ;
   local TF= "Time Frame : " .. source:barSize();    
   local Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec; 
   
     local text = Note  .. delim ..  Symbol .. delim .. TF .. delim ..Price .. delim .. Time;
 
  terminal:alertEmail(Email, profile:id(), text);
end