-- More information about this indicator can be found at:
-- https://fxcodebase.com/code/viewtopic.php?f=17&t=73169

--+------------------------------------------------------------------------------------------------+
--|                                                            Copyright © 2023, Gehtsoft USA LLC  | 
--|                                                                         http://fxcodebase.com  |
--+------------------------------------------------------------------------------------------------+
--|                                                                   Developed by : Mario Jemic   |                    
--|                                                                       mario.jemic@gmail.com    |
--|                                                        https://AppliedMachineLearning.systems  |
--|                                                                       https://mario-jemic.com/ |
--+------------------------------------------------------------------------------------------------+

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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("Engulfing Signal");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Oscillator);

 
	 indicator.parameters:addGroup("Line Style");	  
	 indicator.parameters:addColor("color", "Line Color", "", core.rgb(0, 255, 255)); 

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 first;
local source = nil; 
	
-- Routine
 function Prepare(nameOnly)   
 
	source = instance.source
 
    local name = profile:id() .. "(" ..  instance.source:name().. "," ..   ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
	
	 
	first=source:first() ; 
	
  
	
    Signal = instance:addStream("Signal", core.Bar, name, "Signal", instance.parameters.color, first );
    Signal:setPrecision(math.max(2, instance.source:getPrecision())); 
    Signal:addLevel(0);	
 
end


function Update(period, mode)

 

	if period <= first
	or  not source:hasData(period) 
	then
	return;
	end
	   
 
				 if math.max(source.close[period], source.open[period]) >= math.max(source.close[period-1], source.open[period-1]) 
				 and math.min(source.close[period], source.open[period]) <= math.max(source.close[period-1], source.open[period-1]) 
				 then	 
						 if source.close[period] > source.open[period] then			 
						 Signal[period]=1;
						 elseif source.close[period] < source.open[period] then	
						 Signal[period]=-1;					 
						 else
						 Signal[period]=0;	
						 end					 
				 else	 
				 Signal[period]=0;
				 end
	
 end				 

	  
	  
	
 


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--|                                                                    We appreciate your support. | 
--+------------------------------------------------------------------------------------------------+
--|                                                               Paypal: https://goo.gl/9Rj74e    |
--|                                                             Patreon :  https://goo.gl/GdXWeN   |  
--+------------------------------------------------------------------------------------------------+
--|                                                                   Developed by : Mario Jemic   |                    
--|                                                                       mario.jemic@gmail.com    |
--|                                                        https://AppliedMachineLearning.systems  |
--|                                                                       https://mario-jemic.com/ |
--+------------------------------------------------------------------------------------------------+


--+------------------------------------------------------------------------------------------------+
--|BitCoin                    : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF                                 |  
--|Ethereum                   : 0x8C110cD61538fb6d7A2B47858F0c0AaBd663068D                         |  
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--|SHIB Address               : 0x1817D9ebb000025609Bf5D61E269C64DC84DA735                         |              
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--|BitCoin Cash               : 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg                                 | 
--|LiteCoin                   : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD                                 |  
--+------------------------------------------------------------------------------------------------+