-- Id: 19361

-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=61337

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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("Distance from the moving average");
    indicator:description("Distance from the moving average");
    indicator:requiredSource(core.Tick);
    indicator:type(core.Oscillator);
    indicator.parameters:addGroup("Calculation");	
	
	
    indicator.parameters:addInteger("Duration1", "1. MA Duration ", "MA Duration ", 60);
	indicator.parameters:addInteger("Duration2", "2. MA Duration ", "MA Duration", 120);
	
	indicator.parameters:addString("Type", "MA Duration Type", "", "seconds");
    indicator.parameters:addStringAlternative("Type", "Seconds", "", "seconds");
    indicator.parameters:addStringAlternative("Type", "Ticks", "", "ticks");
 
	
	indicator.parameters:addBoolean("Smoothing", "Uses Smoothing", "", true);
	
	
 
 
	
	indicator.parameters:addString("Mode", "Mode", "Mode", "Value");
	indicator.parameters:addStringAlternative("Mode", "Value", "Value" , "Value");
    indicator.parameters:addStringAlternative("Mode", "Pip", "Pip" , "Pip");
	
	indicator.parameters:addGroup("Style");	
    indicator.parameters:addColor("color1", "Color of Distance", "Color of Distance", 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:addColor("color2", "Color of Smoothed", "Color of Smoothed", 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("Alert Parameters");  
	indicator.parameters:addString("Live", "Execution", "", "End of Turn");
    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", "", false);	
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);

	
	indicator.parameters:addGroup("Alerts Email");   
	indicator.parameters:addBoolean("SendEmail", "Send Email", "", false);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);

	
	Parameters (1, "Distance/Smoothed");	
	Parameters (2, "Distance/Zero");	
	Parameters (3, "Smoothed/Zero");	
	
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 ShowAlert;
local Shift=0; 
local Alert={}; 
local AlertLevel={};

-- 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 Period1;
 
local Period2;
 
local Smoothing;
 
local source = nil;
 
local Mode;

local Duration1, Duration2, Type;
local MA;

-- Streams block
local Distance = nil;

local Second;

-- Routine
function Prepare(nameOnly)
 
   
    Duration1= instance.parameters.Duration1;
	Duration2= instance.parameters.Duration2;
	Type= instance.parameters.Type;
	
	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;
	
	
	
	Mode= instance.parameters.Mode;
	
	Smoothing= instance.parameters.Smoothing;
	
    source = instance.source;
	
	
	 local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(Duration1) .. ", " .. tostring(Duration2).. ", " .. tostring(Typ) .. ", " .. tostring(Mode) .. ")";
    instance:name(name);
	
	if   (nameOnly) then
        return;
    end
	
	local date1= core.datetime (2014, 1, 1, 1, 1, 0);
	local date2= core.datetime (2014, 1, 1, 1, 2, 0);
	Second= ((date2 - date1)/60);
 

   

   
        Distance = instance:addStream("Distance", core.Line, name, "Distance", instance.parameters.color1, source:first());
    Distance:setPrecision(math.max(2, instance.source:getPrecision()));
		Distance:setWidth(instance.parameters.width1);
        Distance:setStyle(instance.parameters.style1);
		
		if Smoothing then 
		MA = instance:addStream("Smoothed", core.Line, name, "Smoothed", instance.parameters.color2, source:first());
    MA:setPrecision(math.max(2, instance.source:getPrecision()));
		MA:setWidth(instance.parameters.width2);
        MA:setStyle(instance.parameters.style2);
		end
   
	
	  for i= 1, Number , 1 do
		Alert[i]=instance:addInternalStream(0, 0);
		AlertLevel[i]=instance:addInternalStream(0, 0);
     end
	
	Initialization();	
	instance:ownerDrawn(true);	 
	
	
end



local init = false;
 
function Draw(stage, context)
 
	 if stage~= 2 then
	  return;
	  end
	  
	  
	
        if not init then
           context:createFont (1, "Wingdings", context:pointsToPixels (Size), context:pointsToPixels (Size), 0);
            init = true;
        end
		
		

		
		for period= math.max(context:firstBar (),source:first()), math.min( context:lastBar (), source:size()-1), 1 do
		
		 
		
		 x, x1, x2= context:positionOfBar (period);
		 
		 for Level = 1 , Number ,  1 do
		   if Alert[Level]:hasData(period) then
		     
		    if Alert[Level][period]== 1 then
			visible, y = context:pointOfPrice (AlertLevel[Level][period]);
			
			  width, height = context:measureText (1,  "\225", 0);
              context:drawText (1,   "\225", UpTrendColor, -1,  x-width/2 ,  y-height , x+width/2 , y, 0 );	
   
			elseif Alert[Level][period]== -1 then
			visible, y = context:pointOfPrice (AlertLevel[Level][period]);
			width, height = context:measureText (1,  "\226", 0);
			 context:drawText (1,   "\226", DownTrendColor, -1,  x-width/2  ,  y , x+width/2 ,y+height, 0 );	
		    end
		  end
		    
		 
		end
		end
		
  
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 and (Email == "" or Email == nil )), "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  and (Up[i] == "" or Up[i] == nil ) ), "Sound file must be chosen");
        assert (not (PlaySoundand  and (Down[i] == "" or Down[i] == nil)), "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)

 
    if period < source:first() or not source:hasData(period) then
	return;
	end
	
	
	if Type == "seconds" then
	P1= core.findDate (source, source:date(period)- Second * Duration1, false);
	else
	P1= period-Duration1+1;
	end
	
	if P1==-1
	or P1< source:first()+1 	
    then
    return;
    end 
	 
		
        local MA1= mathex.avg(source,P1, period);
		
		
	    if Mode== "Pip" then
		Distance[period] = (source[period]-  MA1)/source:pipSize();
		else
        Distance[period] = source[period]-  MA1;
		end
		
		
		
	if not Smoothing then
    return;
    end	
	
	
	
    if Type == "seconds" then
	P2= core.findDate (source, source:date(period)- Second * Duration2, false);
	else
	P2= period-Duration2+1;
	end
	
	if P2==-1
	or P2< source:first()+1 	
    then
    return;
    end 
	  
	   local MA2= mathex.avg(Distance,P2, period);
	   MA[period] =  MA2;
	   
	   
	   
    if Live~= "Live" then
	period=period-1;
	Shift=1;
	else
	Shift=0;
	end
	
	
     if period <  source:first()+1 	 then
	 return;
	 end
	
      Activate (1, period);
	  Activate (2, period);
      Activate (3, period);
end


function Activate (id, period)


   Alert[id][period]=0;
   
   
  
  
	  if id == 1  and ON[id]  then
	  
	       
			if  Distance[period] > MA[period] 
			and   Distance[period-1] <= MA[period-1] 
			then
			           
						    
         
                Alert[id][period]= 1;	
 				AlertLevel[id][period]= MA[period] 
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							  then
							  
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over ", period);
							  SendAlert( Label[id]," Crossed over ", period); 
							  Pop(Label[id], " Cross Over ", period );  
							  OnlyOnceFlag=false;
							  end
							  
			elseif  Distance[period] < MA[period] 
			and   Distance[period-1] >= MA[period-1] 
            then			
			
			            			 
			                Alert[id][period]= -1;	
							AlertLevel[id][period]= MA[period] 
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1-Shift
							 and not FIRST 
							 and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							 then							
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert( Label[id] , " Cross Under ", period);								 
							 Pop(Label[id], " Cross Under ", period );  	
							 SendAlert( Label[id]," Crossed under ", period);
							 OnlyOnceFlag=false;
			                 end			   
	         end
			
	  
	 
	  end
	  
	  
	  if id == 2  and ON[id]  then
	  
	       
			if  Distance[period] > 0 
			and   Distance[period-1] <= 0
			then
			           
						    
         
                Alert[id][period]= 1;	
 				AlertLevel[id][period]= 0;
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							  then
							  
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over ", period);
							  SendAlert( Label[id]," Crossed over ", period); 
							  Pop(Label[id], " Cross Over ", period );  
							  OnlyOnceFlag=false;
							  end
							  
			elseif  Distance[period] < 0
			and   Distance[period-1] >= 0
            then			
			
			            			 
			                Alert[id][period]= -1;	
							AlertLevel[id][period]= 0;
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1-Shift
							 and not FIRST 
							 and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							 then							
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert( Label[id] , " Cross Under ", period);								 
							 Pop(Label[id], " Cross Under ", period );  	
							 SendAlert( Label[id]," Crossed under ", period);
							 OnlyOnceFlag=false;
			                 end			   
	         end
			
	  
	 
	  end
	  
	  
	   if id == 3  and ON[id]  then
	  
	       
			if  MA[period] > 0 
			and   MA[period-1] <= 0
			then
			           
						    
         
                Alert[id][period]= 1;	
 				AlertLevel[id][period]= 0;
						   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							  then
							  
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " Cross Over ", period);
							  SendAlert( Label[id]," Crossed over ", period); 
							  Pop(Label[id], " Cross Over ", period );  
							  OnlyOnceFlag=false;
							  end
							  
			elseif  MA[period] < 0
			and   MA[period-1] >= 0
            then			
			
			            			 
			                Alert[id][period]= -1;	
							AlertLevel[id][period]= 0;
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1-Shift
							 and not FIRST 
							 and  (not OnlyOnce or (OnlyOnce and OnlyOnceFlag~= false))
							 then							
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert( Label[id] , " Cross Under ", period);								 
							 Pop(Label[id], " Cross Under ", period );  	
							 SendAlert( Label[id]," Crossed under ", period);
							 OnlyOnceFlag=false;
			                 end			   
	         end
			
	  
	 
	  end
	  
		   
        if FIRST then
        FIRST=false;      
        end		

end


function AsyncOperationFinished (cookie, success, message)
end

 

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

  terminal:alertSound(Sound, RecurrentSound);
end

 


function EmailAlert( label , Subject, period)

if not SendEmail 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
	 
	 
	 
	 

function Pop(label , Subject, period)
  
   if not Show 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;
	
   
   core.host:execute ("prompt", 1, label , text );


end


function SendAlert(label ,Subject, period)
    if not ShowAlert 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:alertMessage(source:instrument(), source[NOW], text, source:date(NOW));
end