-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=60311
-- Id: 11136

--+------------------------------------------------------------------+
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--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
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--|                                          mario.jemic@gmail.com   |
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--+------------------------------------------------------------------+

function Init()
    indicator:name("SAR with Alert");
    indicator:description("");
    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:addDouble("Step", "Step", "", 0.02, 0.001, 1);
    indicator.parameters:addDouble("Max", "Max","", 0.2, 0.001, 10);

	indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addColor("up", "Up Color", "", core.rgb(0, 255, 0));
	indicator.parameters:addColor("down", "Down vColor", "", core.rgb(255, 0, 0));
	indicator.parameters:addInteger("Size", "Label Size", "", 3, 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);
	indicator.parameters:addBoolean("Show", "Show Dialog box Alert", "", true);
	
	Parameters (1, "SAR change")	
end

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


    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 Alert;
local Indicator;
local PlaySound;

local FIRST=true;
 

local U={};
local D={};

local Step,Max;
local  sar, SAR;
local Show;
local Live;
 
-- Routine
function Prepare(nameOnly)   
	 FIRST=true;
	Show = instance.parameters.Show;
	Live = instance.parameters.Live;	
	Step = instance.parameters.Step; 	
	Max = instance.parameters.Max;
	up= instance.parameters.up;
	down= instance.parameters.down;

   source = instance.source;	

    -- Base name of the indicator.
    local name = profile:id() .. "(" .. source:name() .. ", " .. Step .. ", " ..Max .. ")";
	instance:name(name);
	if nameOnly then
		return;
	end
	
	 -- Create short and long EMAs for the source
    sar = core.indicators:create("SAR", source, Step, Max);
	
	first= math.max(sar.UP:first(),sar.DN:first() );
	
   Initialization();
		
    SAR = instance:addStream("SAR", core.Dot, name .. ".SAR", "SAR", up,  first);
	SAR:setWidth(Size);
	   

  
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;		
	end
		
	

	
end	


 function Calculate(period, mode)
 
   
	
	sar:update(mode);

	if  period < first then
	return;
	end
	if sar.UP:hasData(period)then
	SAR[period]= sar.UP[period];
	SAR:setColor(period, up);
	elseif sar.DN:hasData(period)then
    SAR[period]= sar.DN[period]; 
	SAR:setColor(period, down);
	end
 end
 

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

    Calculate(period, mode);
	
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 sar.UP:hasData(period) 
			and not sar.UP:hasData(period-1) 
			then	   
			
			 D[id] = nil;
						   
							  if U[id]~=source:serial(period) 
							  and period == source:size()-1-Shift
							  and not FIRST 
							  then
							  U[id]=source:serial(period);
							  SoundAlert(Up[id]);
							  EmailAlert(  Label[id], " From Down To Up ", period);
							    
							        if Show then
									Pop(Label[id], " From Down To Up " );  	
								    end
								 
							  end
			elseif sar.DN:hasData(period) 
			and not sar.DN:hasData(period-1) 
            then			   
						   
		     U[id] = nil;
		   
			                 if  D[id]~=source:serial(period)
							 and period == source:size()-1-Shift
							 and not FIRST 
							 then
							 D[id]=source:serial(period);
							 SoundAlert(Down[id]);			 
							 EmailAlert( Label[id] , " From Up To Down ", period);	
								 if Show then
									Pop(Label[id], " From Up To Down " );  	
								 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()  ..   label .. " : " .. note );


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 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 .. Time;
	 
 terminal:alertEmail(Email, profile:id(), text);
end