-- More information about this indicator can be found at:
-- https://fxcodebase.com/code/viewtopic.php?f=17&t=71987

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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("Smoothy");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);

  
 	indicator.parameters:addGroup("Calculation");	
    indicator.parameters:addInteger("length1", "1. line length", "", 55, 1, 2000);
    indicator.parameters:addInteger("length2", "2. line length", "", 55, 1, 2000);	
	indicator.parameters:addString("Method", "MA Method", "Method" , "EMA");
    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: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", "1. Line Color", "", core.rgb(0, 255, 0)); 
	 indicator.parameters:addColor("color2", "2. Line Color", "", core.rgb(255, 0, 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 length1,length2,Method; 
local HA;
	
-- Routine
 function Prepare(nameOnly)   
 
    
	length1=instance.parameters.length1;
	length2=instance.parameters.length2;	
	Method=instance.parameters.Method;
	source = instance.source
 
    local name = profile:id() .. "(" ..  instance.source:name().. "," ..  length1.. "," ..  length2 .. "," ..  Method .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
	
	HA= core.indicators:create("HA", source);
	MA1= core.indicators:create(Method, HA.close,length1);
	MA2= core.indicators:create(Method, MA1.DATA,length1);
	MA3= core.indicators:create(Method, MA2.DATA,length1);		
    TMA1= instance:addInternalStream(0, 0);	
	first=MA3.DATA:first() ; 	
	
  
	MA4= core.indicators:create(Method, TMA1,length1);
	MA5= core.indicators:create(Method, MA4.DATA,length1);
	MA6= core.indicators:create(Method, MA5.DATA,length1);   
   TMA2= instance:addInternalStream(0, 0);	

	MA11= core.indicators:create(Method, source.median,length2);
	MA12= core.indicators:create(Method, MA11.DATA,length2);
	MA13= core.indicators:create(Method, MA12.DATA,length2);		
    TMA11= instance:addInternalStream(0, 0);	 
	
  
	MA14= core.indicators:create(Method, TMA11,length2);
	MA15= core.indicators:create(Method, MA14.DATA,length2);
	MA16= core.indicators:create(Method, MA15.DATA,length2);   
   TMA12= instance:addInternalStream(0, 0);		
 
	
	
    Line1 = instance:addStream("Line1", core.Line, name, "1. Line", instance.parameters.color1, MA6.DATA:first() );
    Line1:setPrecision(math.max(2, instance.source:getPrecision()));
    Line1:setWidth(instance.parameters.width);
    Line1:setStyle(instance.parameters.style);
    Line1:addLevel(0);	


    Line2 = instance:addStream("Line2", core.Line, name, "2. Line", instance.parameters.color2,  MA16.DATA:first()  );
    Line2:setPrecision(math.max(2, instance.source:getPrecision()));
    Line2:setWidth(instance.parameters.width);
    Line2:setStyle(instance.parameters.style);
    Line2:addLevel(0);	 
end


function Update(period, mode)

	HA:update(mode); 
	MA1:update(mode);
	MA2:update(mode);
	MA3:update(mode);

	 if period <= first then
	 return;
	 end
	 
	TMA1[period]=3*MA1.DATA[period]-3*MA2.DATA[period]+MA3.DATA[period]; 
 
	MA4:update(mode);
	MA5:update(mode);
	MA6:update(mode);

	 if period <= MA6.DATA:first() then
	 return;
	 end	
	
	TMA2[period]=3*MA4.DATA[period]-3*MA5.DATA[period]+MA6.DATA[period]
	local IPEK=TMA1[period]-TMA2[period]
	Line1[period]= TMA1[period]+IPEK;
	
	
	MA11:update(mode);
	MA12:update(mode);
	MA13:update(mode);

	 if period <= MA13.DATA:first() then
	 return;
	 end
	 
	TMA11[period]=3*MA11.DATA[period]-3*MA12.DATA[period]+MA13.DATA[period]; 
 
	MA14:update(mode);
	MA15:update(mode);
	MA16:update(mode);

	 if period <= MA16.DATA:first() then
	 return;
	 end	
	
	TMA12[period]=3*MA14.DATA[period]-3*MA15.DATA[period]+MA16.DATA[period]
	local IPEK=TMA11[period]-TMA12[period]
	Line2[period]= TMA11[period]+IPEK;	
	
end