-- Id: 20582
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=31&t=65743


--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC | 
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |                    
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  | 
--|                                    Paypal: https://goo.gl/9Rj74e |
--+------------------------------------------------------------------+
--|                    BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF  |  
--|                BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg  | 
--|           Ethereum : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D  |  
--|                   LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD  |  
--+------------------------------------------------------------------+

function Init() --The strategy profile initialization
    strategy:name("Alligator MACD AO Strategy");
    strategy:description("");
	
	
	strategy:setTag("NonOptimizableParameters", "Email,SendEmail,SoundFile,RecurrentSound,PlaySound, ShowAlert");
	
	strategy.parameters:addGroup("Price");
    strategy.parameters:addString("Type", "Price Type", "", "Bid");
    strategy.parameters:addStringAlternative("Type", "Bid", "", "Bid");
    strategy.parameters:addStringAlternative("Type", "Ask", "", "Ask");
	
	strategy.parameters:addString("TF", "Time frame", "", "m1");
    strategy.parameters:setFlag("TF", core.FLAG_PERIODS);
    

    strategy.parameters:addGroup("MACD Calculation");
    strategy.parameters:addInteger("P1", "Fast period", "Fast period", 12, 1, 1000);
    strategy.parameters:addInteger("P2", "Slow period", "Slow period", 26, 1, 1000);
    strategy.parameters:addInteger("p3", "Signal period", "Signal period", 9, 1, 1000);
	
	strategy.parameters:addGroup("AO Calculation");
	strategy.parameters:addInteger("FM", "Fast period", "Fast period", 5, 2, 10000);
    strategy.parameters:addInteger("SM","Slow period", "Slow period",  35, 2, 10000);
	 strategy.parameters:addInteger("AO_Count", "AO_Count", "", 2);
	 
	 
	 
	 strategy.parameters:addGroup("1. Alligator Calculation");
    strategy.parameters:addInteger("JawN1", "Alligator Jaw smoothing periods", "", 13, 1, 300);
    strategy.parameters:addInteger("JawS1", "Alligator Jaw shifting periods", "", 8, 0, 300);

    strategy.parameters:addInteger("TeethN1", "Alligator Teeth smoothing periods", "", 8, 1, 300);
    strategy.parameters:addInteger("TeethS1", "Alligator Teeth shifting periods", "", 5, 0, 300);

    strategy.parameters:addInteger("LipsN1", "Alligator Lips smoothing periods", "", 5, 1, 300);
    strategy.parameters:addInteger("LipsS1", "Alligator Lips shifting periods", "", 3, 0, 300);

    strategy.parameters:addString("MTH1","Smoothing method", "", "SMMA");
    strategy.parameters:addStringAlternative("MTH1", "MVA", "", "MVA");
    strategy.parameters:addStringAlternative("MTH1", "EMA", "", "EMA");
    strategy.parameters:addStringAlternative("MTH1", "LWMA", "", "LWMA");
    strategy.parameters:addStringAlternative("MTH1", "LSMA", "", "REGRESSION");
    strategy.parameters:addStringAlternative("MTH1", "SMMA", "", "SMMA");
    strategy.parameters:addStringAlternative("MTH1", "Vidya1995", "", "VIDYA");
    strategy.parameters:addStringAlternative("MTH1", "Vidya1992", "", "VIDYA92");
    strategy.parameters:addStringAlternative("MTH1", "Wilders", "", "WMA");

	
	strategy.parameters:addGroup("2. Alligator Calculation");
    strategy.parameters:addInteger("JawN2", "Alligator Jaw smoothing periods", "", 65, 1, 300);
    strategy.parameters:addInteger("JawS2", "Alligator Jaw shifting periods", "", 8, 0, 300);

    strategy.parameters:addInteger("TeethN2", "Alligator Teeth smoothing periods", "", 40, 1, 300);
    strategy.parameters:addInteger("TeethS2", "Alligator Teeth shifting periods", "", 5, 0, 300);

    strategy.parameters:addInteger("LipsN2", "Alligator Lips smoothing periods", "", 25, 1, 300);
    strategy.parameters:addInteger("LipsS2", "Alligator Lips shifting periods", "", 3, 0, 300);

    strategy.parameters:addString("MTH2","Smoothing method", "", "SMMA");
    strategy.parameters:addStringAlternative("MTH2", "MVA", "", "MVA");
    strategy.parameters:addStringAlternative("MTH2", "EMA", "", "EMA");
    strategy.parameters:addStringAlternative("MTH2", "LWMA", "", "LWMA");
    strategy.parameters:addStringAlternative("MTH2", "LSMA", "", "REGRESSION");
    strategy.parameters:addStringAlternative("MTH2", "SMMA", "", "SMMA");
    strategy.parameters:addStringAlternative("MTH2", "Vidya1995", "", "VIDYA");
    strategy.parameters:addStringAlternative("MTH2", "Vidya1992", "", "VIDYA92");
    strategy.parameters:addStringAlternative("MTH2", "Wilders", "", "WMA");
 
	 
 
    CreateTradingParameters();
end

function CreateTradingParameters()
    strategy.parameters:addGroup("Execution Parameters");

    strategy.parameters:addBoolean("AllowTrade", "Allow strategy to trade", "", true);   
    strategy.parameters:setFlag("AllowTrade", core.FLAG_ALLOW_TRADE);
	
	 strategy.parameters:addString("AccountType", "Account Type", "", "Automatic");
    strategy.parameters:addStringAlternative("AccountType", "FIFO", "", "FIFO");
	strategy.parameters:addStringAlternative("AccountType", "non FIFO", "", "NON");
    strategy.parameters:addStringAlternative("AccountType", "Automatic", "", "Automatic");
	
  
	strategy.parameters:addString("EntryExecutionType", "Entry Execution Type", "", "EndOfTurn");
    strategy.parameters:addStringAlternative("EntryExecutionType", "End of Turn", "", "EndOfTurn");
	strategy.parameters:addStringAlternative("EntryExecutionType", "Live", "", "Live");	
	--*********************************************************************************************************
	strategy.parameters:addString("ExitExecutionType", "Exit Execution Type", "", "EndOfTurn");
    strategy.parameters:addStringAlternative("ExitExecutionType", "End of Turn", "", "EndOfTurn");
	strategy.parameters:addStringAlternative("ExitExecutionType", "Live", "", "Live");
	--*********************************************************************************************************
		
	 strategy.parameters:addGroup("Trade Parameters");
	
	strategy.parameters:addBoolean("CloseOnOpposite", "Close On Opposite", "", true);
    strategy.parameters:addString("CustomID", "Custom Identifier", "The identifier that can be used to distinguish strategy instances", "AMACDAOS");
	
	strategy.parameters:addBoolean("PositionCap", "Use Position Cap", "", true);
	
   
	
	strategy.parameters:addInteger("MaxNumberOfPositionInAnyDirection", "Max Number Of Open Position In Any Direction", "", 2);
	strategy.parameters:addInteger("MaxNumberOfPosition", "Max Number Of Position In One Direction", "", 1);
    	
    strategy.parameters:addString("ALLOWEDSIDE", "Allowed side", "Allowed side for trading or signaling, can be Sell, Buy or Both", "Both");
    strategy.parameters:addStringAlternative("ALLOWEDSIDE", "Both", "", "Both");
    strategy.parameters:addStringAlternative("ALLOWEDSIDE", "Buy", "", "Buy");
    strategy.parameters:addStringAlternative("ALLOWEDSIDE", "Sell", "", "Sell");
	
	strategy.parameters:addString("Direction", "Type of Signal / Trade", "", "direct");
    strategy.parameters:addStringAlternative("Direction", "Direct", "", "direct");
    strategy.parameters:addStringAlternative("Direction", "Reverse", "", "reverse");

    strategy.parameters:addString("Account", "Account to trade on", "", "");
    strategy.parameters:setFlag("Account", core.FLAG_ACCOUNT);
    strategy.parameters:addInteger("Amount", "Trade Amount in Lots", "", 1, 1, 1000000);
    strategy.parameters:addBoolean("SetLimit", "Set Limit Orders", "", false);
    strategy.parameters:addInteger("Limit", "Limit Order in pips", "", 30);
    strategy.parameters:addBoolean("SetStop", "Set Stop Orders", "", false);
    strategy.parameters:addInteger("Stop", "Stop Order in pips", "", 30);
    strategy.parameters:addBoolean("TrailingStop", "Trailing stop order", "", false);
	
	--*********************************************************************************************************
    strategy.parameters:addBoolean("Exit", "Use Optional Exit", "", true);
	--*********************************************************************************************************
	
	
    strategy.parameters:addGroup("Alerts");
    strategy.parameters:addBoolean("ShowAlert", "ShowAlert", "", true);
    strategy.parameters:addBoolean("PlaySound", "Play Sound", "", false);
    strategy.parameters:addFile("SoundFile", "Sound File", "", "");
    strategy.parameters:setFlag("SoundFile", core.FLAG_SOUND);
    strategy.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", true);
    strategy.parameters:addBoolean("SendEmail", "Send Email", "", false);
    strategy.parameters:addString("Email", "Email", "", "");
    strategy.parameters:setFlag("Email", core.FLAG_EMAIL);
	
	 strategy.parameters:addGroup("Time Parameters");
	 
	strategy.parameters:addInteger("ToTime", "Convert the date to", "", 6);
    strategy.parameters:addIntegerAlternative("ToTime", "EST", "", 1);
    strategy.parameters:addIntegerAlternative("ToTime", "UTC", "", 2);
    strategy.parameters:addIntegerAlternative("ToTime", "Local", "", 3);
    strategy.parameters:addIntegerAlternative("ToTime", "Server", "", 4);
    strategy.parameters:addIntegerAlternative("ToTime", "Financial", "", 5);
	strategy.parameters:addIntegerAlternative("ToTime", "Display", "", 6);
	
    strategy.parameters:addString("StartTime", "Start Time for Trading", "", "00:00:00");
    strategy.parameters:addString("StopTime", "Stop Time for Trading", "", "24:00:00");
	--*********************************************************************************************************
    strategy.parameters:addBoolean("ManageExit", "Use Exit  after Stop Time", "", true);
	--*********************************************************************************************************
    strategy.parameters:addBoolean("UseMandatoryClosing", "Use Mandatory Closing", "", false);
    strategy.parameters:addString("ExitTime", "Mandatory Closing  Time", "", "23:59:00");
    strategy.parameters:addInteger("ValidInterval", "Valid interval for operation in second", "", 60);
	
	
end

local AccountType;
local Source,TickSource;
local MaxNumberOfPositionInAnyDirection, MaxNumberOfPosition;
local SoundFile = nil;
local RecurrentSound = false;
local ALLOWEDSIDE;
local AllowTrade;
local Offer;
local CanClose;
local Account;
local Amount;
local SetLimit;
local Limit;
local SetStop;
local Stop;
local TrailingStop;
local ShowAlert;
local Email;
local SendEmail;
local BaseSize;
local EntyExecutionType, ExitExecutionType;
local CloseOnOpposite
local first;
local Direction;
local CustomID;
local PositionCap;
local TF;
local OpenTime, CloseTime, ExitTime;
local LastEntry, LastExit;
local ToTime;
local ValidInterval,UseMandatoryClosing;
--*********************************************************************************************************
local ManageExit,Exit;
--*********************************************************************************************************
--Indicator parameters
local MACD, P1,P2,P3;
local FM,SM, AO,AO_Count;
local JawN1 ,JawS1, TeethN1,TeethS1, LipsN1,  LipsS1, MTH1;
local JawN2 ,JawS2, TeethN2,TeethS2, LipsN2,  LipsS2, MTH2;
local Alligator1, Alligator2;
 
function Prepare( nameOnly)

     CustomID = instance.parameters.CustomID;
	 
	 
    name = profile:id() .. ", " .. instance.bid:name() .. ", " .. CustomID;
    instance:name(name);
	

    if nameOnly then
        return ;
    end
	
	P1 = instance.parameters.P1;
	P2 = instance.parameters.P2;
	P3 = instance.parameters.P3;
	FM = instance.parameters.FM;
	SM = instance.parameters.SM;
	AO_Count= instance.parameters.AO_Count;
	
	
	--Indicator parameters
	JawN1= instance.parameters.JawN1;
	JawS1= instance.parameters.JawS1;
	TeethN1= instance.parameters.TeethN1;
	TeethS1= instance.parameters.TeethS1;
	LipsN1= instance.parameters.LipsN1;
	LipsS1= instance.parameters.LipsS1;
	MTH1= instance.parameters.MTH1;
    JawN2 = instance.parameters.JawN2;
	JawS2= instance.parameters.JawS2;
	TeethN2= instance.parameters.TeethN2;
	TeethS2= instance.parameters.TeethS2;
	LipsN2= instance.parameters.LipsN2;
	LipsS2= instance.parameters.LipsS2;
	MTH2= instance.parameters.MTH2;
 
	AccountType = instance.parameters.AccountType;
	EntryExecutionType = instance.parameters.EntryExecutionType;
	ExitExecutionType= instance.parameters.ExitExecutionType;
    CloseOnOpposite = instance.parameters.CloseOnOpposite;
	MaxNumberOfPositionInAnyDirection = instance.parameters.MaxNumberOfPositionInAnyDirection;
	MaxNumberOfPosition = instance.parameters.MaxNumberOfPosition;
	Direction = instance.parameters.Direction == "direct";
	TF= instance.parameters.TF;
	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
		
	 
	PositionCap = instance.parameters.PositionCap;	
	ValidInterval = instance.parameters.ValidInterval;
	UseMandatoryClosing = instance.parameters.UseMandatoryClosing;
	 
	LastEntry=nil;
	LastExit=nil;
	--*********************************************************************************************************
	 ManageExit = instance.parameters.ManageExit;
	  Exit= instance.parameters.Exit;
	--*********************************************************************************************************
	
 
    assert(TF ~= "t1", "The time frame must not be tick");

   
    name = profile:id() .. ", " .. instance.bid:name() .. ", " .. CustomID;
    instance:name(name);
   
    PrepareTrading();

  
	
	--assert(core.indicators:findIndicator("EXTREME_TMA_LINE") ~= nil, "Please, download and install EXTREME_TMA_LINE.LUA indicator");          
	
 	if EntryExecutionType== "Live" 
	--****************************************************************************************************
	or ExitExecutionType== "Live"
	--******************************************************************************************************
	  then
	 TickSource = ExtSubscribe(1, nil, "t1", instance.parameters.Type == "Bid", "close");
 	end
	
    Source = ExtSubscribe(2, nil, TF, instance.parameters.Type == "Bid", "bar");
    MACD = core.indicators:create("MACD", Source.close, P1, P2,P3  );
	AO = core.indicators:create("AO", Source, FM, SM,core.rgb(0, 255, 0),core.rgb(255, 0, 0)  ); 
	
	 Alligator1 = core.indicators:create("ALLIGATOR", Source, JawN1 ,JawS1, TeethN1,TeethS1, LipsN1,  LipsS1, MTH1  );
	 Alligator2 = core.indicators:create("ALLIGATOR", Source, JawN2 ,JawS2, TeethN2,TeethS2, LipsN2,  LipsS2, MTH2 );
	 
	first=math.max(MACD.SIGNAL:first(),AO.DATA:first()); 
	
	
	ValidInterval = instance.parameters.ValidInterval;
	UseMandatoryClosing = instance.parameters.UseMandatoryClosing;
	
	 local valid;
    OpenTime, valid = ParseTime(instance.parameters.StartTime);
    assert(valid, "Time " .. instance.parameters.StartTime .. " is invalid");
    CloseTime, valid = ParseTime(instance.parameters.StopTime);
    assert(valid, "Time " .. instance.parameters.StopTime .. " is invalid");
    ExitTime, valid = ParseTime(instance.parameters.ExitTime);
    assert(valid, "Time " .. instance.parameters.ExitTime .. " is invalid");
	
	if UseMandatoryClosing then
        core.host:execute("setTimer", 100, math.max(ValidInterval / 2, 1));
    end
	
end


function ReleaseInstance()
core.host:execute ("killTimer", 100);

end
-- NG: create a function to parse time
function InRange(now, openTime, closeTime)
    if openTime < closeTime then
        return now >= openTime and now <= closeTime;
    end
    if openTime > closeTime then
        return now > openTime or now < closeTime;
    end

    return now == openTime;
end

function ParseTime(time)
    local Pos = string.find(time, ":");
    if Pos == nil then
        return nil, false;
    end
    local h = tonumber(string.sub(time, 1, Pos - 1));
    time = string.sub(time, Pos + 1);
    Pos = string.find(time, ":");
    if Pos == nil then
        return nil, false;
    end
    local m = tonumber(string.sub(time, 1, Pos - 1));
    local s = tonumber(string.sub(time, Pos + 1));
    return (h / 24.0 +  m / 1440.0 + s / 86400.0),                          -- time in ole format
           ((h >= 0 and h < 24 and m >= 0 and m < 60 and s >= 0 and s < 60) or (h == 24 and m == 0 and s == 0)); -- validity flag
end


function PrepareTrading()
    ALLOWEDSIDE = instance.parameters.ALLOWEDSIDE;

    local PlaySound = instance.parameters.PlaySound;
    if PlaySound then
        SoundFile = instance.parameters.SoundFile;
    else
        SoundFile = nil;
    end
    assert(not(PlaySound) or (PlaySound and SoundFile ~= ""), "Sound file must be chosen");

    ShowAlert = instance.parameters.ShowAlert;
    RecurrentSound = instance.parameters.RecurrentSound;

    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");

    AllowTrade = instance.parameters.AllowTrade;
    Account = instance.parameters.Account;
    Amount = instance.parameters.Amount;
    BaseSize = core.host:execute("getTradingProperty", "baseUnitSize", instance.bid:instrument(), Account);
    Offer = core.host:findTable("offers"):find("Instrument", instance.bid:instrument()).OfferID;
    --CanClose = core.host:execute("getTradingProperty", "canCreateMarketClose", instance.bid:instrument(), Account);
	
	if AccountType== "FIFO" then
	CanClose=false;
    elseif AccountType== "NON" then
	CanClose=true;
	else
	CanClose = core.host:execute("getTradingProperty", "canCreateMarketClose", instance.bid:instrument(), Account);
	end
	
    SetLimit = instance.parameters.SetLimit;
    Limit = instance.parameters.Limit;
    SetStop = instance.parameters.SetStop;
    Stop = instance.parameters.Stop;
    TrailingStop = instance.parameters.TrailingStop;
end
 

function CountFunction (period)
 
 
     local X=0;
	 local C=0;
     for p=  period-1 , Source:first(), -1 do
	 
	 
        C=C+1;
		if AO.DATA:colorI(p) ==  core.rgb(0, 255, 0)  then
		X=X+1;
		else
		X=X-1;
		end
		
		if C>= AO_Count then
		break;
		end
		
		
	 
	 end
     
     local Return =0;
	 
	 if X == AO_Count  then
	 Return=1;
	 elseif X == -AO_Count  then
	 Return=-1;
	 end
	 
	 return Return;
	 
end
function ExtUpdate(id, source, period)  -- The method called every time when a new bid or ask price appears.
   
   
    if AllowTrade then
        if not(checkReady("trades")) or not(checkReady("orders")) then
         return ;
        end
		
    end
	
    
	
	if period < 0
	then
        return;
    end
	


	if EntryExecutionType== "Live" 
	--****************************************************************************************************
	or ExitExecutionType== "Live" 
	--****************************************************************************************************
    then	
	      
	
			if id ~= 1 then
			return;
			end		
		    period= core.findDate (Source, TickSource:date(period), false);
	else	
			if id ~= 2 then       
			return;
			end
			
			
	end
	
	

	
  
    now = core.host:execute("getServerTime");
	now= core.host:execute ("convertTime",  core.TZ_EST, ToTime, now);
   -- get only time
    now = now - math.floor(now);
	
  
 
	
	    -- update indicators.
    MACD:update(core.UpdateLast);
	AO:update(core.UpdateLast);
    Alligator1:update(core.UpdateLast);
    Alligator2:update(core.UpdateLast);

	if period < first 
	then
        return;
    end
	
	
	local Count= CountFunction (period);
	
	if EntryExecutionType== "Live" and id==1 
	or EntryExecutionType~= "Live" and id~=1 then
    EntryFunction(now,period,Count);	
	end
	
	if ExitExecutionType== "Live" and id==1 
	or ExitExecutionType~= "Live" and id~=1 then
    ExitFunction(now,period,Count);
	end

end


function ExitFunction( now,period,Count)

 


      if not Exit then
	  return;
	  end
	   
 
 
	 

       if not InRange(now, OpenTime, CloseTime) 
	  and not ManageExit
	  then            
      return ;
      end
	  
	   if ( LastExit == Source:serial(period))   then
	 return;
	 end	  
	  


		            if   MACD.MACD[period]< MACD.SIGNAL[period]
					or   Count~=1
					or AO.DATA:colorI(period) ~=  core.rgb(0, 255, 0) 
					or Alligator1.Jaw[period+JawS1] <Alligator2.Jaw[period+JawS2]
					then
 
								if   Direction then
										   if haveTrades("B") then
											   exitSpecific("B");
											   Signal ("Close Long");
										   end
							   else 
										 if haveTrades("S") then
											   exitSpecific("S");
											   Signal ("Close Short");
										   end
								   
								end
								LastExit= Source:serial(period);
					  end
					  if  MACD.MACD[period]> MACD.SIGNAL[period] 
					  or   Count~=-1
					  or AO.DATA:colorI(period) ~=  core.rgb(255, 0, 0) 
					  or Alligator1.Jaw[period+JawS1] >Alligator2.Jaw[period+JawS2]
					  then
		   
								   if   Direction then    
										if haveTrades("S") then
										   exitSpecific("S");
										   Signal ("Close Short");
									   end 
								  
								  
							   else 
							   
									  if haveTrades("B") then
										   exitSpecific("B");
										   Signal ("Close Long");
									   end
								
							 
							 end
							 
							 LastExit= Source:serial(period);
				
					end
					
					
					
					
	 
                
end

function EntryFunction( now,period,Count)


    local Return=false;


      if not InRange(now, OpenTime, CloseTime) 
	  then  
      return Return;
      end
	  
     if ( LastEntry == Source:serial(period) )   then
	 return;
	 end	
	--JawS1
    -- only buy if we have a fast cross over slow and the price is above the moving averages.
    if   MACD.MACD[period]> MACD.SIGNAL[period]
	and Count==1
	and AO.DATA:colorI(period) ==  core.rgb(0, 255, 0) 
	and  Alligator1.Jaw[period+JawS1] >Alligator2.Jaw[period+JawS2]
	then	
          if Direction then
                BUY();
            else
                SELL();
            end
		LastEntry= Source:serial(period);
		Return=true;
    elseif MACD.MACD[period]< MACD.SIGNAL[period]
	and Count==-1
	and AO.DATA:colorI(period) ==  core.rgb(255, 0, 0) 
	and Alligator1.Jaw[period+JawS1] <Alligator2.Jaw[period+JawS2]
		then
            if Direction then
                SELL();
            else
                BUY();
            end
		LastEntry= Source:serial(period);
		Return=true;
    end
	
 	
	 
	 return Return;
	  
end
-- NG: Introduce async function for timer/monitoring for the order results
function ExtAsyncOperationFinished(cookie, success, message)

    if cookie == 100 then
        -- timer
        if UseMandatoryClosing and AllowTrade then
            now = core.host:execute("getServerTime");
            now= core.host:execute ("convertTime",  core.TZ_EST, ToTime, now);
            -- get only time
            now = now - math.floor(now);
			
            -- check whether the time is in the exit time period
            if now >= ExitTime and now < ExitTime +(ValidInterval / 86400.0) then
                if not checkReady("trades")  then
                    return ;
                end  
				
				     if haveTrades("B")  then
                     exitSpecific("B");
                     Signal ("Close Long");
					 end
					 
					 if haveTrades("S")  then
                     exitSpecific("S");
                     Signal ("Close Short");
					 end
            end
        end
    elseif cookie == 200 and not success then
        terminal:alertMessage(instance.bid:instrument(), instance.bid[instance.bid:size() - 1], "Open order failed" .. message, instance.bid:date(instance.bid:size() - 1));
    elseif cookie == 201 and not success then
        terminal:alertMessage(instance.bid:instrument(), instance.bid[instance.bid:size() - 1], "Close order failed" .. message, instance.bid:date(instance.bid:size() - 1));
		
	 end
	 
end

--===========================================================================--
--                    TRADING UTILITY FUNCTIONS                              --
--============================================================================--
function BUY()
    if AllowTrade then
        --if CanClose and CloseOnOpposite and  haveTrades("S") then
		if (CloseOnOpposite or Hedge) and  haveTrades("S")then
            -- close on opposite signal
            exitSpecific("S");
            Signal ("Close Short");
        end

        if ALLOWEDSIDE == "Sell"  then
            -- we are not allowed buys.
            return;
        end 

        enter("B",0);
    else
        Signal ("Buy Signal");	
    end
end   

function HEDGELONG ()
			
	  if ALLOWEDSIDE == "Buy" and haveTrades("B")  then
				-- we are not allowed sells.
				return;
	  end 
			
	 if not haveTrades("B")  then
     return;
     end		

     if AllowTrade then
	       
	 
	        local bCount= tradesCount("B"); 	
			
			if  bCount > 0  then				 
				exitSpecific("B");
				Signal ("Hedge Long");
				enter("S", bCount);
			end

		 
			 
    else
        Signal ("Hedge Long");	
    end

end
function HEDGESHORT ()

       if ALLOWEDSIDE == "Sell" and haveTrades("S")  then
				-- we are not allowed buys.
				return;
			end 
			
	 if not haveTrades("S")  then
     return;
     end	 

     if AllowTrade then
	       
		    local sCount= tradesCount("S"); 	  
			  
        
			if  sCount > 0  then				 
				exitSpecific("S");
				Signal ("Hedge Short");
				 enter("B", sCount);
			end
				 
			 
    else
        Signal ("Hedge Short");	
    end

end



    
function SELL ()		
    if AllowTrade then
        --if CanClose and CloseOnOpposite and  haveTrades("B") then
		if (CloseOnOpposite or Hedge) and  haveTrades("B") then
            -- close on opposite signal
            exitSpecific("B");
            Signal ("Close Long");
        end

        if ALLOWEDSIDE == "Buy"  then
            -- we are not allowed sells.
            return;
        end

        enter("S",0);
    else
        Signal ("Sell Signal");	
    end
end

function Signal (Label)
    if ShowAlert then
        terminal:alertMessage(instance.bid:instrument(), instance.bid[NOW],  Label, instance.bid:date(NOW));
    end

    if SoundFile ~= nil then
        terminal:alertSound(SoundFile, RecurrentSound);
    end

    if Email ~= nil then
        terminal:alertEmail(Email, profile:id().. " : " .. Label , FormatEmail(Source, NOW, Label));
		 
    end
end								

function checkReady(table)
    local rc;
    if Account == "TESTACC_ID" then
        -- run under debugger/simulator
        rc = true;
    else
        rc = core.host:execute("isTableFilled", table);
    end

    return rc;
end

 

function tradesCount(BuySell) 
    local enum, row;
    local count = 0;
    enum = core.host:findTable("trades"):enumerator();
    row = enum:next();
    while row ~= nil do
        if row.AccountID == Account 
		and row.OfferID == Offer 
		and row.QTXT == CustomID   
		and (row.BS == BuySell or BuySell == nil) then
            count = count + 1;
        end

        row = enum:next();
    end

    return count;
end

function haveTrades(BuySell) 
    local enum, row;
    local found = false;
    enum = core.host:findTable("trades"):enumerator();
    row = enum:next();
    while (row ~= nil) do
        if row.AccountID == Account
		and row.OfferID == Offer
		and  row.QTXT == CustomID 
		and (row.BS == BuySell or BuySell == nil) then
            found = true;
            break;
        end
 
        row = enum:next();
    end

    return found;
end

-- enter into the specified direction
function enter(BuySell, hCount)
    -- do not enter if position in the specified direction already exists
    if (tradesCount(BuySell) >= MaxNumberOfPosition
	or (tradesCount(nil) >= MaxNumberOfPositionInAnyDirection))	
	and PositionCap	
	then
        return true;
    end

    -- send the alert after the checks to see if we can trade.
    if (BuySell == "S") then
        Signal ("Sell Signal");	
    else
        Signal ("Buy Signal");	
    end

    return MarketOrder(BuySell,hCount);
end


-- enter into the specified direction
function MarketOrder(BuySell,hCount)

  --  if trade_in_progress then
	--return;
	--end

   -- trade_in_progress=true;
	
    local valuemap, success, msg;
    valuemap = core.valuemap();

    valuemap.Command = "CreateOrder";
    valuemap.OrderType = "OM";
    valuemap.OfferID = Offer;
    valuemap.AcctID = Account;
	if hCount > 0 then
	valuemap.Quantity = hCount * BaseSize;
	else
    valuemap.Quantity = Amount * BaseSize;
	end
    valuemap.BuySell = BuySell;
     valuemap.CustomID = CustomID;

    -- add stop/limit
    valuemap.PegTypeStop = "O";
    if SetStop then 
        if BuySell == "B" then
            valuemap.PegPriceOffsetPipsStop = -Stop;
        else
            valuemap.PegPriceOffsetPipsStop = Stop;
        end
    end
    if TrailingStop then
        valuemap.TrailStepStop = 1;
    end

    valuemap.PegTypeLimit = "O";
    if SetLimit then
        if BuySell == "B" then
            valuemap.PegPriceOffsetPipsLimit = Limit;
        else
            valuemap.PegPriceOffsetPipsLimit = -Limit;
        end
    end

    if (not CanClose) then
        valuemap.EntryLimitStop = 'Y'
    end

    success, msg = terminal:execute(200, valuemap);

    if not(success) then
        terminal:alertMessage(instance.bid:instrument(), instance.bid[instance.bid:size() - 1], "Open order failed" .. msg, instance.bid:date(instance.bid:size() - 1));
        return false;
    end

    return true;
end




function exitSpecific(BuySell)

 if not AllowTrade then
 return;
 end
 
--side
-- closes all positions of the specified direction (B for buy, S for sell)
 
    local enum, row, valuemap;

    enum = core.host:findTable("trades"):enumerator();
    while true do
        row = enum:next();
        if row == nil then
            break;
        end
        if row.AccountID == Account and
           row.OfferID == Offer and
           row.BS == BuySell and
           row.QTXT == CustomID then
            -- if trade has to be closed

						if CanClose then
										-- non-FIFO account, create a close market order
										valuemap = core.valuemap();
										valuemap.OrderType = "CM";
										valuemap.OfferID = Offer;
										valuemap.AcctID = Account;
										valuemap.Quantity = row.Lot;
										valuemap.TradeID = row.TradeID;
										valuemap.CustomID = CustomID;
										if row.BS == "B" then
											valuemap.BuySell = "S";
										else
											valuemap.BuySell = "B";
										end
										success, msg = terminal:execute(201, valuemap);
										 if not(success) then
											terminal:alertMessage(instance.bid:instrument(), instance.bid[instance.bid:size() - 1], "Close order failed" .. msg, instance.bid:date(instance.bid:size() - 1));
											return false;
										end
						  else
											-- FIFO account, create an opposite market order
											valuemap = core.valuemap();
											valuemap.OrderType = "OM";
											valuemap.OfferID = Offer;
											valuemap.AcctID = Account;
											--valuemap.Quantity = Amount*BaseSize;
							                valuemap.Quantity = row.Lot;
											valuemap.CustomID = CustomID;
											if row.BS == "B" then
												valuemap.BuySell = "S";
											else
												valuemap.BuySell = "B";
											end
											success, msg = terminal:execute(201, valuemap);
											 if not(success) then
												terminal:alertMessage(instance.bid:instrument(), instance.bid[instance.bid:size() - 1], "Close order failed" .. msg, instance.bid:date(instance.bid:size() - 1));
												return false;
											end
						end
        end
    end
end 

dofile(core.app_path() .. "\\strategies\\standard\\include\\helper.lua");
 