-- More information about this indicator can be found at:
-- https://fxcodebase.com/code/viewtopic.php?f=17&t=73004

--+------------------------------------------------------------------------------------------------+
--|                                                            Copyright © 2022, 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("Displaced Moving Average Channel ");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);

  
 	indicator.parameters:addGroup("Calculation");	
    indicator.parameters:addInteger("Period", "Period", "", 5, 1, 2000);
	indicator.parameters:addString("Method", "MA Method", "Method" , "MVA");
    indicator.parameters:addStringAlternative("Method", "MVA", "MVA" , "MVA");
    indicator.parameters:addStringAlternative("Method", "EMA", "EMA" , "EMA");
    indicator.parameters:addStringAlternative("Method", "LWMA", "LWMA" , "LWMA");
    indicator.parameters:addStringAlternative("Method", "TMA", "TMA" , "TMA");
    indicator.parameters:addStringAlternative("Method", "SMMA", "SMMA" , "SMMA");
    indicator.parameters:addStringAlternative("Method", "KAMA", "KAMA" , "KAMA");
    indicator.parameters:addStringAlternative("Method", "VIDYA", "VIDYA" , "VIDYA");
    indicator.parameters:addStringAlternative("Method", "WMA", "WMA" , "WMA");	
	
    indicator.parameters:addInteger("Shift", "Shift", "", 0  );
	
	 indicator.parameters:addGroup("Line Style");	
    indicator.parameters:addInteger("width", "Line width", "", 1, 1, 5);
    indicator.parameters:addInteger("style", "Line style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style", core.FLAG_LINE_STYLE);
	
	indicator.parameters:addColor("color1", "High Line Color", "", core.rgb(0, 255, 0)); 
	indicator.parameters:addColor("color2", "Low Line Color", "", core.rgb(255, 0, 0)); 
	
	
	 indicator.parameters:addGroup("Cloud Style");		
	indicator.parameters:addInteger("Transparency", "Transparency", "", 40,0,100);	 
	indicator.parameters:addColor("color", "Cloud Color", "", core.rgb(255, 255, 0)); 	
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;
local Period,Method, Shift; 
local Indicator;
	
-- Routine
 function Prepare(nameOnly)   
 
    
	Period=instance.parameters.Period;
	Method=instance.parameters.Method;
	Shift=instance.parameters.Shift;
   Transparency= instance.parameters.Transparency;
   Transparency= 100-Transparency;		
	
	source = instance.source
 
    local name = profile:id() .. "(" ..  instance.source:name().. "," ..  Period.. "," ..  Method.. "," ..  Shift   .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
	
	low= core.indicators:create(Method, source.low, Period );
	high= core.indicators:create(Method, source.high, Period );	
	first=high.DATA:first() ; 
	
 
 
	
	
    High = instance:addStream("High", core.Line, name, "High", instance.parameters.color1, first,Shift  );
    High:setPrecision(math.max(2, instance.source:getPrecision()));
    High:setWidth(instance.parameters.width);
    High:setStyle(instance.parameters.style); 


    Low = instance:addStream("Low", core.Line, name, "Low", instance.parameters.color2, first,Shift );
    Low:setPrecision(math.max(2, instance.source:getPrecision()));
    Low:setWidth(instance.parameters.width);
    Low:setStyle(instance.parameters.style); 

	instance:createChannelGroup("Group","Group" , High, Low, instance.parameters.color, Transparency);	
end


function Update(period, mode)

	low:update(mode); 
	high:update(mode); 
	
	 if period <= first or period+Shift < source:first() then
	 return;
     end
 
	  	
	High[period+Shift]= high.DATA[period];
	Low[period+Shift]= low.DATA[period];	
end


--+------------------------------------------------------------------------------------------------+
--|                                                                    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/ |
--+------------------------------------------------------------------------------------------------+


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