-- https://fxcodebase.com/code/viewtopic.php?f=17&t=74155

-- +------------------------------------------------------------------------------------------------+
-- |                                                              Copyright 2025, Gehtsoft USA LLC  | 
-- |                                                                         http://fxcodebase.com  |
-- |                                                               Paypal:  https://goo.gl/9Rj74e   |
-- +------------------------------------------------------------------------------------------------+
-- |                                                                   Developed by : Mario Jemic   |                    
-- |                                                                       mario.jemic@gmail.com    |
-- |                                                                       https://mario-jemic.com/ | 
-- |                                                             Patreon :  http://tiny.cc/1ybwxz   |   
-- |                                                      Buy Me a Coffee:  http://tiny.cc/bj7vxz   |  
-- +-----------------+----------------------+-------------------------------------------------------+
-- |  Cryptocurrency |  Network             |  Address                                              |
-- +-----------------+----------------------+-------------------------------------------------------+
-- |  BTC            |  BTC                 |  16F5k43RXibTmna4np8bPVgmXM1CzjXFJJ                   | 
-- |  SOL            |  SOL                 |  3nh5rpUKopcYLNU4zGCdUFAkM3iRQq8VVUmuzVG6VDf2         | 
-- |  ETH            |  ERC20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           |
-- |  BNB            |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- |  USDT           |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- |  XRP            |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- +-----------------+----------------------+-------------------------------------------------------+ 
 
 
--//////////////////////////////////////////////////////////////////////////////
--\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

-- 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("Engulfing Signal");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
	
	indicator.parameters:addGroup("Calculation");	 
    indicator.parameters:addBoolean("Signal", "Signal Mode", "", false); 
    indicator.parameters:addBoolean("HL" , "Lower Low - Higher High","", false);	
  	
	indicator.parameters:addGroup("Line Style");	
	indicator.parameters:addInteger("Size", "Arrow Size", "", 20); 
   indicator.parameters:addColor("clrUP", "Up Arrow", "" ,  core.COLOR_UPCANDLE);
    indicator.parameters:addColor("clrDN",  "Down Arrow", "" , core.COLOR_DOWNCANDLE);	
	indicator.parameters:addColor("color", "Bar Color", "", core.rgb(0, 0, 255)); 

 
	indicator.parameters:addGroup("Indicator Style");   
    indicator.parameters:addColor("color1", "Fast MA color", "MA color", core.rgb(0,255,0));
	indicator.parameters:addInteger("width1", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style1", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style1", core.FLAG_LINE_STYLE);
	
	indicator.parameters:addColor("color2", "Slow MA color", "MA color", core.rgb(255,0,0));
	indicator.parameters:addInteger("width2", "MA Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("style2", "MA Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("style2", core.FLAG_LINE_STYLE);
	
	
end


 
--//////////////////////////////////////////////////////////////////////////////
--\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\


-- 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 Signal;	
local first;
local source = nil; 
local Bar;	
local up, down;
-- Routine
 function Prepare(nameOnly)   
  
	source = instance.source
	
	Signal=instance.parameters.Signal;  
	HL=instance.parameters.HL;
 
    local name = profile:id() .. "(" ..  instance.source:name()  .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
	
	first=source:first()+2;  
	
	 
	
	if Signal then
    Bar = instance:addStream("Bar", core.Bar, name, "Bar", instance.parameters.color, first );
    Bar:setPrecision(math.max(2, instance.source:getPrecision())); 
    Bar:addLevel(0);	
	else
    Bar = instance:addInternalStream(0, 0);	
	end
	
	
	 
	up = instance:createTextOutput ("Up", "Up", "Wingdings", instance.parameters.Size, core.H_Center, core.V_Bottom, instance.parameters.clrUP, 0);
    down = instance:createTextOutput ("Dn", "Dn", "Wingdings", instance.parameters.Size, core.H_Center, core.V_Top , instance.parameters.clrDN, 0);
 
			
end 

function ReleaseInstance()
core.host:execute ("killTimer", 3 );
end 
 


function Update(period, mode)

       up:setNoData(period);
    down:setNoData(period);
	
 
	
	if period <= first
	or not  source:hasData(period)
	then
	return;
	end
	
	 
 
	
	
	
 
	local max1=math.max(source.open[period],source.close[period]);
	local min1=math.min(source.open[period],source.close[period]);	 
	
	local max2=math.max(source.open[period-1],source.close[period-1]);
	local min2=math.min(source.open[period-1],source.close[period-1]);	 
	
    if source.close[period]  <  source.open[period]
	and source.close[period-1] > source.open[period-1] 
	and max1 >= max2
	and min1 <= min2	
	and (not HL or source.high[period] > source.high[period-1] and HL)	
	then
	BearCondition = true;
	else
	BearCondition = false;
    end	
 
            
    if source.close[period]  >  source.open[period]
	and source.close[period-1] < source.open[period-1]
	and max1 >= max2
	and min1 <= min2	
	and (not HL or source.low[period] < source.low[period-1] and HL)	
	then	  
	BullCondition = true;
	else
	BullCondition = false;
    end	
	
	
	if BullCondition
	then
	Bar[period]= 1;
    up:set(period, source.low[period] , "\217");	
	elseif BearCondition
    then	
    down:set(period, source.high[period] , "\218");	
	Bar[period]= -1;
    else
	Bar[period]= 0;	
	end
	
	 
end
      
-- https://fxcodebase.com/code/viewtopic.php?f=17&t=74155

-- +------------------------------------------------------------------------------------------------+
-- |                                                              Copyright 2025, Gehtsoft USA LLC  | 
-- |                                                                         http://fxcodebase.com  |
-- |                                                               Paypal:  https://goo.gl/9Rj74e   |
-- +------------------------------------------------------------------------------------------------+
-- |                                                                   Developed by : Mario Jemic   |                    
-- |                                                                       mario.jemic@gmail.com    |
-- |                                                                       https://mario-jemic.com/ | 
-- |                                                             Patreon :  http://tiny.cc/1ybwxz   |   
-- |                                                      Buy Me a Coffee:  http://tiny.cc/bj7vxz   |  
-- +-----------------+----------------------+-------------------------------------------------------+
-- |  Cryptocurrency |  Network             |  Address                                              |
-- +-----------------+----------------------+-------------------------------------------------------+
-- |  BTC            |  BTC                 |  16F5k43RXibTmna4np8bPVgmXM1CzjXFJJ                   | 
-- |  SOL            |  SOL                 |  3nh5rpUKopcYLNU4zGCdUFAkM3iRQq8VVUmuzVG6VDf2         | 
-- |  ETH            |  ERC20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           |
-- |  BNB            |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- |  USDT           |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- |  XRP            |  BEP20               |  0xe53aab6bc468a963a02d1319660ee60cf80fc8e7           | 
-- +-----------------+----------------------+-------------------------------------------------------+ 
--+------------------------------------------------------------------------------------------------+