-- Id: 20424
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=65667

--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC |
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  |
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--+------------------------------------------------------------------+

function AddParam(id, frame )

    indicator.parameters:addGroup(id.. ". Time Frame");
	 
	
	--indicator.parameters:addBoolean("USE".. id, "Use this Slot", "", true);	
	
	indicator.parameters:addString("On".. id , "Show This Slot", "","Alert");	  
    indicator.parameters:addStringAlternative("On".. id, "View", "View" , "View");
    indicator.parameters:addStringAlternative("On".. id, "Alert", "Alert" , "Alert");
	indicator.parameters:addStringAlternative("On".. id, "Off", "Off" , "Off");
	
    indicator.parameters:addString("TF" .. id,  "Time frame", "", frame);
    indicator.parameters:setFlag("TF" .. id, core.FLAG_PERIODS);
	
	indicator.parameters:addString("Pair" .. id, "Pair", "", "EUR/USD");
    indicator.parameters:setFlag("Pair" .. id, core.FLAG_INSTRUMENTS);
	
	indicator.parameters:addDouble("Step" .. id, "Step","", 0.02, 0.001, 1);
    indicator.parameters:addDouble("Max" .. id, "Max","", 0.2, 0.001, 10);
end


function Init()
    indicator:name("MTF MCP SAR");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
	
    indicator.parameters:addGroup("Calculation");	
	indicator.parameters:addBoolean("Chart" , "Use Chart Price Source", "", true); 
	
    AddParam(1, "m1");	
    AddParam(2, "m5");	
    AddParam(3, "m15");	
    AddParam(4, "m30");
    AddParam(5, "H1");
	AddParam(6, "H2");	
    AddParam(7, "H3");	
    AddParam(8, "H4");	
    AddParam(9, "H6");
    AddParam(10, "H8");
	AddParam(11, "D1");	
    AddParam(12, "W1");
    AddParam(13, "M1");
	
	
	 indicator.parameters:addGroup("Alerts Sound");   
	 
	indicator.parameters:addInteger("ToTime", "Convert the date to", "", 6);
    indicator.parameters:addIntegerAlternative("ToTime", "EST", "", 1);
    indicator.parameters:addIntegerAlternative("ToTime", "UTC", "", 2);
    indicator.parameters:addIntegerAlternative("ToTime", "Local", "", 3);
    indicator.parameters:addIntegerAlternative("ToTime", "Server", "", 4);
    indicator.parameters:addIntegerAlternative("ToTime", "Financial", "", 5);
	indicator.parameters:addIntegerAlternative("ToTime", "Display", "", 6);
	
    indicator.parameters:addBoolean("PlaySound", "Play Sound", "", true);	
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);
	
	indicator.parameters:addFile("Sound",   "Alert Sound", "", "");
    indicator.parameters:setFlag("Sound", core.FLAG_SOUND);
	indicator.parameters:addGroup("Alerts Dialog box");  
	indicator.parameters:addBoolean("Show", "Show Dialog box 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:addGroup("Style");
    indicator.parameters:addColor("UP", "Color for Up Trend", "", core.rgb(0, 255, 0));
    indicator.parameters:addColor("DN", "Color for Down Trend", "", core.rgb(255, 0, 0));	
	indicator.parameters:addColor("NO", "Color for Unclear Trend", "", core.rgb(255, 128, 0));
	
	indicator.parameters:addColor("AlertColor", "Alert Color", "", core.rgb(0, 0, 255));
	
	indicator.parameters:addColor("Label", "Label Color", "", core.rgb(0, 0, 0));
	indicator.parameters:addDouble("Size", "As % of Cell", "", 90);
	indicator.parameters:addInteger("VShift", "Vertical Shift ", "Shift", 75); 
end


local On={};
local Email;
local SendEmail; 
local Sound;
local RecurrentSound ,SoundFile  ;
local Show;
local PlaySound;

-- 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, DN, NO,VShift;
	local source = nil;
	local TF={};
	local Pair={};
	local L={};	
	local host;
	local offset;
	local weekoffset;
	local SourceData={};
	local loading={};  
	local Size;
	local USE={};
	local Count=13;
    local Number;
	local Chart ;
	local Label;
    local Indicator={};
	local day_offset, week_offset;
   
    local Last={};
	local AlertColor;
	local ToTime;
	
-- Routine
function Prepare(nameOnly)

    source = instance.source;
 
    local name = profile:id() .. "(" .. source:name()  .. ")";
    instance:name(name); 
    if   (nameOnly) then
        return;
    end


    	
	Chart=instance.parameters.Chart;
 
    UP=instance.parameters.UP;
	DN=instance.parameters.DN;
	NO=instance.parameters.NO;
	VShift=instance.parameters.VShift;
	
	ToTime= instance.parameters.ToTime;
	
	if ToTime == 1 then
	ToTime=core.TZ_EST;
	elseif ToTime == 2 then
	ToTime=core.TZ_UTC;
	elseif ToTime == 3 then
	ToTime=core.TZ_LOCAL;
	elseif ToTime == 4 then
	ToTime=core.TZ_SERVER;
	elseif ToTime == 5 then
	ToTime=core.TZ_FINANCIAL;
	elseif ToTime == 6 then
	ToTime=core.TZ_TS;
	end
	
	AlertColor=instance.parameters.AlertColor;
	
	Label=instance.parameters.Label;
    Shift=instance.parameters.Shift;
    Size=instance.parameters.Size;
	
    day_offset = core.host:execute("getTradingDayOffset");
    week_offset = core.host:execute("getTradingWeekOffset");
	
	 host = core.host;
    offset = host:execute("getTradingDayOffset");
    weekoffset = host:execute("getTradingWeekOffset");
	
	

    local i;
  
	
	Number=0;
--	AlertNumber=0;
	
    for i = 1, Count, 1 do
	
	  
	
	    USE[i]=instance.parameters:getString("On" .. i)~= "Off";
		
		
	   
	     if USE[i]  then
		 Number=Number+1;
		 
		  
		    On[Number]=instance.parameters:getString("On" .. i)== "Alert";
			
				 		    
		    if  Chart   then		
		    Pair[Number]=source:name();	  
            else
            Pair[Number]= instance.parameters:getString("Pair" .. i);
		    end
	      
			  TF[Number]= instance.parameters:getString("TF" .. i);	 
		 end   
		   
	  
    end
   
   	
 	local Test= core.indicators:create("SAR", source,  instance.parameters:getDouble("Step" .. 1),  instance.parameters:getDouble("Max" .. 1) );
	local First= math.max( Test:getStream(1):first(),Test:getStream(0):first());
	

    for i = 1, Number, 1 do	
	
	     
	  
	  	
	    if (TF[i] == source:barSize() and   Pair[i] == source:name())     then
		SourceData[i]=source;
		loading[i]= false;
		else 	
	    SourceData[i] = core.host:execute("getSyncHistory", Pair[i], TF[i], source:isBid(), First*2+1 , 200+i, 100+i);	   
		loading[i]= true;		
		end
		
		
		 Indicator[i] = core.indicators:create("SAR", SourceData[i],  instance.parameters:getDouble("Step" .. i),  instance.parameters:getDouble("Max" .. i) );
		
		
		 
    end
	
	 SendEmail = instance.parameters.SendEmail;
	 
	if SendEmail then
        Email = instance.parameters.Email;
    else
        Email = nil;
    end
    assert(not(SendEmail) or (SendEmail and Email ~= ""), "E-mail address must be specified");
	

	
	RecurrentSound= instance.parameters.RecurrentSound;
    Show= instance.parameters.Show; 
	PlaySound = instance.parameters.PlaySound;
	
    if PlaySound then 
	  Sound=instance.parameters.Sound; 
    else  
      Sound=nil;
	 end
	 
	 
	  assert(not(PlaySound) or (PlaySound and Sound ~= "") or (PlaySound and Sound ~= ""), "Sound file must be chosen"); 
	   
	 
	 instance:ownerDrawn(true);
     core.host:execute ("setTimer", 1, 1);
	 

end

function ReleaseInstance()
core.host:execute ("killTimer", 1);
end 


function   Initialization(id,period)

    local Candle;
    Candle = core.getcandle(TF[id], source:date(period), offset, weekoffset);

  
    if loading[id] or SourceData[id]:size() == 0 then
        return false ;
    end

    
    if period < source:first() then
        return false;
    end

    local p = core.findDate(SourceData[id], Candle, false);

    -- candle is not found
    if p < 0 then
        return false;
	else return p;	
    end
	
end	

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

 
function Draw(stage, context)
    if stage ~= 2 then
	return;
	end
	
	local Flag = false;	

	
	
	
    for j = 1, Number, 1 do			
		if loading[j] then	
		Flag=true;
		end	 
 
	end    
	local Background;
     	if Flag then
		return;
		end
      
	    local xCell = (context:right () -context:left ())/(Number+1);		
        local yCell = (context:bottom () -context:top ())/15;		    
		
		for i = 1, Number, 1 do 	
			local Color;
			Background=-1;
						 
			if Indicator[i]:getStream(1):hasData(Indicator[i]:getStream(1):size()-1)  then
			Color=UP;
			elseif Indicator[i]:getStream(0):hasData(Indicator[i]:getStream(0):size()-1) then
			Color=DN;
			else
			Color=NO;
			end		
		
		
		   if Last[i]== SourceData[i]:serial(SourceData[i]:size()-1) then
		   Background=AlertColor;
		   end
		   
			        		
			context:createFont (1, "Arial", (xCell/12)*(Size/100), yCell*(Size/100), 0);	
           
			 width, height = context:measureText (1, tostring(Pair[i]), 0)			
			 context:drawText (1, tostring(Pair[i]), Label, -1, context:left ()+(i-1)*xCell    , context:top ()+VShift+yCell/4, context:left ()+(i-1)*xCell + width, context:top ()+VShift+yCell/4 + height, 0);
			 
			  width, height = context:measureText (1, tostring(TF[i]), 0)				
		    context:drawText (1, tostring(TF[i]), Color, Background, context:left ()+(i-1)*xCell    , context:top ()+VShift+yCell*(5/4), context:left ()+(i-1)*xCell + width, context:top ()+VShift+yCell*(5/4) + height, 0);
			
		 end
	 
         		 
 
		
end

-- the function is called when the async operation is finished

function AsyncOperationFinished(cookie)

     local j;	 
	local Flag = false;	
	local Count=0;	
	
	
	
    for j = 1, Number, 1 do
		
			  if cookie == (100+j) then
			  loading[j] = true;
		      elseif  cookie == (200+j) then
			  loading[j] = false;  
			 	 
              end
			  
		if loading[j] then
		Count=Count+1;
		Flag=true;
		end	 
 
	end    
	
	
	if cookie== 1  and not Flag then
		
			for i = 1, Number, 1 do
			 
					Indicator [i]:update(core.UpdateLast); 		

                      Evaluate(i);					
			 
		       end    
		
		end 
	
     	if Flag then
		core.host:execute ("setStatus", " Loading ".. (Number-Count) .."/" .. Number);
		else
		core.host:execute ("setStatus", " Loaded ");
		 instance:updateFrom(0);
		end
		
		
	 	
   
        
		return core.ASYNC_REDRAW ;
   
end


function Evaluate(i)	

     if not On[i] 	 
	 then
	 return;
	 end
	 
	 
	  local   p=Initialization((source:size()-1),i);
	  
	  if p==false then
	  return;
	  end
	  
		 
		 if  (
		 not Indicator[i]:getStream(1):hasData(p)
		 and
		 not Indicator[i]:getStream(0):hasData(p)
		 ) 
		 or Last[i]== SourceData[i]:serial(p)
		 then
		 return;
		 end
	--serial 
 
		if  Indicator[i]:getStream(1):hasData(p)
		and not  Indicator[i]:getStream(1):hasData(p-1)
		and Last[i]~= SourceData[i]:serial(p) 
		then 
		 Last[i]= SourceData[i]:serial(p);
		 GiveAlert("Up SAR",i); 
		elseif Indicator[i]:getStream(0):hasData(p)
		and not  Indicator[i]:getStream(0):hasData(p-1)
		and Last[i]~= SourceData[i]:serial(p) 
		then
		 GiveAlert("Down SAR",i); 
		  Last[i]= SourceData[i]:serial(p);
		end
		  	         	 
	 
 
end


function GiveAlert(Label,i)

    
	SoundAlert(Sound);
	Pop("Alert",  Pair[i], Label   ); 
	EmailAlert(  "Alert",   Pair[i], Label  );
end



function EmailAlert( label ,  Instrument,Label )

if not SendEmail then
return
end

    now = core.host:execute("getServerTime");
	now= core.host:execute ("convertTime",  core.TZ_EST, ToTime, now);   
	local DATA = core.dateToTable (now);
	
    
   local delim = "\013\010";  
  
   local Time =  " Date : " .. DATA.month.." / ".. DATA.day .. delim .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec; 
   
     local text = " Instrument : " .. Instrument.. delim ..  Time.. delim  .. Label .. " : " ..label;
	 
   terminal:alertEmail(Email, Label .. " : " ..label , text);
end
 
function Pop(label , Instrument,Label )

   if not Show then
   return;
   end
   
    now = core.host:execute("getServerTime");
	now= core.host:execute ("convertTime",  core.TZ_EST, ToTime, now);   
	local DATA = core.dateToTable (now);
	
    
   local delim = "\013\010";  
  
   local Time =  " Date : " .. DATA.month.." / ".. DATA.day.. delim .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec; 
   
     local text = " Instrument : " .. Instrument.. delim ..  Time.. delim  ..  label .. " : " .. Label ;

   core.host:execute ("prompt", 1,   profile:id()  ,   text );


end

function SoundAlert(iAlert )
 if not PlaySound then
 return;
 end 
  
     terminal:alertSound(iAlert, RecurrentSound);
end

function   Initialization(period,id)

    local Candle;
    Candle = core.getcandle(source:barSize(), source:date(period), day_offset, week_offset);
  
    if loading[id] or SourceData[id]:size() == 0  then
        return false;
    end

    
    if period < source:first() then
        return false;
    end

    local P = core.findDate(SourceData[id], Candle, false);
	 

    -- candle is not found
    if P < 0    then
        return false;
	else return P;	
    end
			
end