-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=63118

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-- Indicator profile initialization routine
-- Defines indicator profile properties and indicator parameters
-- TODO: Add minimal and maximal value of numeric parameters and default color of the streams

function Init()
    indicator:name("Two Indicator Cross Alert");
    indicator:description("");
   indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
   
    indicator.parameters:addGroup("Calculation");
    indicator.parameters:addString("INDICATOR1", "Indicator", "", "");
    indicator.parameters:setFlag("INDICATOR1", core.FLAG_INDICATOR);

    indicator.parameters:addInteger("Number1", "Data Stream Number", "", 1, 1, 100);
	
	
	indicator.parameters:addString("INDICATOR2", "Indicator", "", "");
    indicator.parameters:setFlag("INDICATOR2", core.FLAG_INDICATOR);

    indicator.parameters:addInteger("Number2", "Data Stream Number", "", 1, 1, 100);
		
	indicator.parameters:addGroup("Indicator Style");   
    indicator.parameters:addColor("color1", "1. Indicator color", "Line color", core.rgb(0,255,0));
	indicator.parameters:addInteger("width1", "Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style1", "Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style1", core.FLAG_LINE_STYLE);
	
	indicator.parameters:addColor("color2", "2. Indicator color", "Line color", core.rgb(255,0,0));
	indicator.parameters:addInteger("width2", "Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style2", "Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style2", core.FLAG_LINE_STYLE);
	
    indicator.parameters:addGroup("Alert Parameters");  
	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:addBoolean("Show", "Show Dialog box Alert", "", true);
	indicator.parameters:addBoolean("OnlyOnce", "Alert Once", "Subsequent Alert will be ignored.", false);	
	indicator.parameters:addBoolean("ShowAlert", "Show Alert", "", true);
	
	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:addGroup("Alerts Email");   
	indicator.parameters:addBoolean("SendEmail", "Send Email", "", true);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);

	
	Parameters (1, "Indicator 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;
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 OnlyOnce;
local U={};
local D={};
local UpTrendColor, DownTrendColor;
local OnlyOnceFlag;
local font;
local ShowAlert;
local first;
local FIRST;
local FirstPeriod
local source = nil;

local Number1, Number2;
local INDICATOR1, INDICATOR2;
local Count1, Count2;
local Indicator1,Indicator2;
local First, Second;
-- Routine
function Prepare(nameOnly)
    
	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;
	
	
 
    INDICATOR1 = instance.parameters.INDICATOR1;
	INDICATOR2 = instance.parameters.INDICATOR2;
	source = instance.source; 
	
	Number1 = instance.parameters.Number1;
    Number1 = Number - 1;
    
	Number2 = instance.parameters.Number2;
    Number2 = Number2 - 1;
    -- Base name of the indicator.
    local name = profile:id() .. "(" .. source:name() .. ", " .. INDICATOR1 .. ", " .. INDICATOR2 .. ")";
    instance:name(name);
	
	
	if   (nameOnly) then
        return;
    end
	
	font = core.host:execute("createFont", "Wingdings", Size, false, false);
	
	 -- Create short and long EMAs for the source
    local tmpprofile1 = core.indicators:findIndicator(instance.parameters:getString("INDICATOR1"));
    local tmpparams1 = instance.parameters:getCustomParameters("INDICATOR1");
	
	local tmpprofile2 = core.indicators:findIndicator(instance.parameters:getString("INDICATOR2"));
    local tmpparams2 = instance.parameters:getCustomParameters("INDICATOR2");
	
    if tmpprofile1:requiredSource() == core.Tick then
        Indicator1 = tmpprofile1:createInstance(source.close, tmpparams1);
    else
        Indicator1 = tmpprofile1:createInstance(source, tmpparams1);
    end
	
	 if tmpprofile2:requiredSource() == core.Tick then
        Indicator2 = tmpprofile2:createInstance(source.close, tmpparams2);
    else
        Indicator2 = tmpprofile2:createInstance(source, tmpparams2);
    end

    Count1 = Indicator1:getStreamCount();
	Count2 = Indicator2:getStreamCount();
	
    if Number1 >= Count1 then
        Number1 = Count1;
        assert(false, "Incorrect index of stream. The indicator has only " .. Count1 .. " stream(s).");
    end
	
	 if Number2 >= Count2 then
        Number2 = Count2;
        assert(false, "Incorrect index of stream. The indicator has only " .. Count2 .. " stream(s).");
    end
	
    
    INDEX1 = Indicator1:getStream(Number1);
	INDEX2 = Indicator2:getStream(Number2);
    FirstPeriod = math.max(source:first(), INDEX1:first(),  INDEX2:first());

    First = instance:addStream("First", core.Line, name .. ".First", "First", instance.parameters.color1 ,INDEX1:first());
	First:setWidth(instance.parameters.width1);
    First:setStyle(instance.parameters.style1);
	
	Second = instance:addStream("Second", core.Line, name .. ".Second", "Second", instance.parameters.color2,  INDEX2:first());
	Second:setWidth(instance.parameters.width2);
    Second:setStyle(instance.parameters.style2);
	   
	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
-- TODO: Add your code for calculation output values
function Update(period, mode) 



     Indicator1:update(mode);
	 Indicator2:update(mode);

	 if   period < FirstPeriod then
	return;
	end
	
	First[period]= INDEX1[period];
	Second[period]= INDEX2[period];

    core.host:execute ("removeLabel", source:serial(period)); 
   
 
    Activate (1, 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  First[period] > Second[period] 
			and  First[period-1] <= Second[period-1] 
			then
			           
						    
             core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, Second[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  First[period] < Second[period] 
			and   First[period-1] >= Second[period-1] 
            then			
			
			            			 
			               core.host:execute("drawLabel1", source:serial(period), source:date(period),  core.CR_CHART, Second[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() .. " : " .. source:barSize() .. " ) "  ..   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 TF= "Time Frame : " .. source:barSize();       
    local text = Note  .. delim ..  Symbol .. delim .. TF  .. delim .. Time;
 
	
 
   terminal:alertEmail(Email, profile:id(), text);
end