-- Id: 15027

-- http://fxcodebase.com/code/viewtopic.php?f=17&t=62855

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-- Indicator profile initialization routine
function Init()
    indicator:name("MACD with bar's coloring");
    indicator:description("");
    indicator:requiredSource(core.Tick);
    indicator:type(core.Oscillator);
	
	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("1. MACD Calculation");
    indicator.parameters:addInteger("SN1", "Short EMA", "", 12, 2, 1000);
    indicator.parameters:addInteger("LN1", "Long EMA", "", 26, 2, 1000);
	
	indicator.parameters:addGroup("2. MACD Calculation");
    indicator.parameters:addInteger("SN2", "Short EMA", "", 21, 2, 1000);
    indicator.parameters:addInteger("LN2", "Long EMA", "", 34, 2, 1000);
	
	indicator.parameters:addGroup("3. MACD Calculation");
    indicator.parameters:addInteger("SN3", "Short EMA", "", 34, 2, 1000);
    indicator.parameters:addInteger("LN3", "Long EMA", "", 144, 2, 1000);
 
	
	indicator.parameters:addGroup("1. Line Style");
    indicator.parameters:addColor("color1", "Line color", "", core.rgb(0, 255, 0));
	indicator.parameters:addInteger("width1", "Line Width", "", 1, 1, 5);
    indicator.parameters:addInteger("style1", "Line Style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style1", core.FLAG_LINE_STYLE);	

    indicator.parameters:addGroup("2. Line Style");
    indicator.parameters:addColor("color2", "Line color", "", core.rgb(255, 0, 0));
	indicator.parameters:addInteger("width2", "Line Width", "", 1, 1, 5);
    indicator.parameters:addInteger("style2", "Line Style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style2", core.FLAG_LINE_STYLE);	

    indicator.parameters:addGroup("3. Line Style");
    indicator.parameters:addColor("color3", "Line color", "", core.rgb(0, 0, 255));
	indicator.parameters:addInteger("width3", "Line Width", "", 1, 1, 5);
    indicator.parameters:addInteger("style3", "Line Style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style3", core.FLAG_LINE_STYLE);


    indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addColor("UpTrendColor", "Up Trend Color", "", core.rgb(0, 0, 255));
	indicator.parameters:addColor("DownTrendColor", "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:addBoolean("ShowAlert", "Show Alert", "", true);
	
	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, "1.MACD/2.MACD");	
	Parameters (2, "1.MACD/3.MACD");
	Parameters (3, "2.MACD/3.MACD");
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 = 3;

local Up={};
local Down={};
local Label={};
local ON={};
local Size;
local Email;
local SendEmail;
local  RecurrentSound ,SoundFile  ;
local Show;
local Alert;
local PlaySound;
local Live;
local FIRST=true;
local OnlyOnce;
local U={};
local D={};
local UpTrendColor, DownTrendColor;
local OnlyOnceFlag;
local font;
local ShowAlert;

-- Indicator instance initialization routine

-- Parameters block
local SN={};
local LN={};
 

local firstPeriodMACD; 
local source = nil;

local EMAS={};
local EMAL={};
 
local first={};
local width={};
local color={};
local style={};

-- Streams block
local MACD={};
 

-- Routine
function Prepare(nameOnly)

    source = instance.source;
	
	OnlyOnceFlag=true;
	FIRST=true;
	OnlyOnce = instance.parameters.OnlyOnce;
	ShowAlert = instance.parameters.ShowAlert;
	Show = instance.parameters.Show;
	Live = instance.parameters.Live;
	UpTrendColor = instance.parameters.UpTrendColor;
	DownTrendColor = instance.parameters.DownTrendColor;
	Size=instance.parameters.Size;
	
	   -- Base name of the indicator.
    local name = profile:id() .. "(" .. source:name() .. ")";
	instance:name(name);
	if nameOnly then
		return;
	end
    font = core.host:execute("createFont", "Wingdings", Size, false, false);
	
    local i;
    for i= 1 , 3 , 1 do
    SN[i] =instance.parameters:getInteger("SN"..i);
    LN[i] =instance.parameters:getInteger("LN"..i);
	color[i]=instance.parameters:getDouble("color"..i);
	style[i]=instance.parameters:getInteger("style"..i);
	width[i]=instance.parameters:getInteger("width"..i);
	
		 if (LN[i] <= SN[i]) then
		   error(i .. ". MACD Short EMA period must be smaller than long EMA period");
		end
		
		
		  -- Create short and long EMAs for the source
    EMAS[i] = core.indicators:create("EMA", source, SN[i]);
    EMAL[i] = core.indicators:create("EMA", source, LN[i]);
	first[i] =  EMAL[i].DATA:first();
	
	MACD[i] = instance:addStream("MACD".. i , core.Line, name, i.. ". MACD",color[i], first[i]); 
    MACD[i]:setPrecision(math.max(2, instance.source:getPrecision()));
	MACD[i]:setWidth(width[i]);
    MACD[i]:setStyle(style[i]);
	end 

    Initialization();
 
end


function  Initialization ()
    
	 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;	 
	end
		 
end	

-- Indicator calculation routine
function Update(period, mode)
   
    local i;
	
	for i= 1 , 3, 1 do
    EMAS[i]:update(mode);
    EMAL[i]:update(mode);	
	
		if period > first[i] then
		MACD[i][period] = EMAS[i].DATA[period] - EMAL[i].DATA[period];
		end
	end
	
	  core.host:execute ("removeLabel", source:serial(period)); 
  
	if period < (math.max(first[1], first[2],first[3])+1) then
	return;
	end
	
    Activate (1, period);
	Activate (2, period);
	Activate (3, period); 
end


function ReleaseInstance()
       core.host:execute("deleteFont", font);
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  MACD[1][period] > MACD[2][period] 
			and   MACD[1][period-1] <= MACD[2][period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[2][period], core.CR_CHART, core.H_Center, core.V_Bottom, font, UpTrendColor, "\225");

 						 
						   
			
			 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);
							  SendAlert("Crossed over");  
							        
									Pop(Label[id], " Cross Over " );  	
								    
								 
							  end
			elseif  MACD[1][period] < MACD[2][period] 
			and   MACD[1][period-1] >= MACD[2][period-1] 
            then			
			
			            			 
			               core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[2][period], core.CR_CHART, core.H_Center, core.V_Top, font, DownTrendColor, "\226");						   
						   
		     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);	
								 
									Pop(Label[id], " Cross Under " );  	
								    SendAlert("Crossed under");
							 
			                  end			   
	         end
			
	  
	 
	  end
	  
	  if id == 2  and ON[id]  then
	  
	       
			if  MACD[1][period] > MACD[3][period] 
			and   MACD[1][period-1] <= MACD[3][period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[3][period], core.CR_CHART, core.H_Center, core.V_Bottom, font, UpTrendColor, "\225");

 						 
						   
			
			 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);
							  SendAlert("Crossed over");  
							        
									Pop(Label[id], " Cross Over " );  	
								    
								 
							  end
			elseif  MACD[1][period] < MACD[3][period] 
			and   MACD[1][period-1] >= MACD[3][period-1] 
            then			
			
			            			 
			               core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[3][period], core.CR_CHART, core.H_Center, core.V_Top, font, DownTrendColor, "\226");						   
						   
		     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);	
								 
									Pop(Label[id], " Cross Under " );  	
								    SendAlert("Crossed under");
							 
			                  end			   
	         end
			
	  
	 
	  end
	  
	  if id == 3  and ON[id]  then
	  
	       
			if  MACD[2][period] > MACD[3][period] 
			and   MACD[2][period-1] <= MACD[3][period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[3][period], core.CR_CHART, core.H_Center, core.V_Bottom, font, UpTrendColor, "\225");

 						 
						   
			
			 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);
							  SendAlert("Crossed over");  
							        
									Pop(Label[id], " Cross Over " );  	
								    
								 
							  end
			elseif  MACD[2][period] < MACD[3][period] 
			and   MACD[2][period-1] >= MACD[3][period-1] 
            then			
			
			            			 
			               core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, MACD[3][period], core.CR_CHART, core.H_Center, core.V_Top, font, DownTrendColor, "\226");						   
						   
		     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);	
								 
									Pop(Label[id], " Cross Under " );  	
								    SendAlert("Crossed under");
							 
			                  end			   
	         end
			
	  
	 
	  end
	  
        if FIRST then
        FIRST=false;      
        end		

end


function AsyncOperationFinished (cookie, success, message)
end


function Pop(label , note)
  
   if not Show then
   return;
   end
 
  core.host:execute ("prompt", 1, label ,   " ( " .. source:instrument() .. " ) "  ..   label .. " : " .. note );
 
end


function SendAlert(message)
    if not ShowAlert then
        return;
    end
 
 
     terminal:alertMessage(source:instrument(), source[NOW], message, source:date(NOW));
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 Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec;  
 
    local Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec;    
    local text = Note  .. delim ..  Symbol   .. delim .. Time;
	 
	
 
  terminal:alertEmail(Email, profile:id(), text);
end