-- More information about this indicator can be found at:
-- https://fxcodebase.com/code/viewtopic.php?f=17&t=71934

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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("ATR Normalized Momentum");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Oscillator);
 
  
 	indicator.parameters:addGroup("Calculation");	
    indicator.parameters:addInteger("Period1", "Period", "", 5, 1, 2000);
    indicator.parameters:addInteger("Period2", "Smooth", "", 15, 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:addDouble("Levels", "Level", "", 1.62);
	
	 indicator.parameters:addGroup("Line Style");	  
	 indicator.parameters:addColor("Up", "Up Color", "", core.rgb(0, 255, 0)); 
	 indicator.parameters:addColor("Down", "Down 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 Period1, Period2,Levels,Method; 
local Indicator;
local ATR,MA;	
local Up, Down;
-- Routine
 function Prepare(nameOnly)   
 
    
	Period1=instance.parameters.Period1;
	Period2=instance.parameters.Period2;
	Levels=instance.parameters.Levels;
	Method=instance.parameters.Method;
	Up=instance.parameters.Up;
	Down=instance.parameters.Down;
	source = instance.source
 
    local name = profile:id() .. "(" ..  instance.source:name().. "," ..  Period1.. "," ..  Period2.. "," ..  Levels.. "," ..  Method  .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
	
	ATR= core.indicators:create("ATR", source, Period1);
	MA= core.indicators:create("MVA", source.close, Period2);	
	first=math.max(ATR.DATA:first(),MA.DATA:first())+Period2 ; 
	
  
	
    Line = instance:addStream("Line", core.Bar, name, "Line", Up, first );
    Line:setPrecision(math.max(2, instance.source:getPrecision())); 
    Line:addLevel(0);	
 
end


function Update(period, mode)

	ATR:update(mode); 
	MA:update(mode); 
	 if period < first then
	 return;
	 end
	 
 
 
	
	
	Line[period]=  (MA.DATA[period]-MA.DATA[period-Period2+1])/ATR.DATA[period];
	if Line[period]>0 then
	Line:setColor(period,  Up);	
	else
	Line:setColor(period,  Down);	
	end
	
	
end