-- Id: 22436
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=66727

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

	
	indicator.parameters:addGroup("Calculation");
	
	
	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("Period", "Short EMA", "", 200, 1, 1000); 

 
 
	
	 
	indicator.parameters:addGroup("Style");
	indicator.parameters:addColor("Up", "Up color", "", core.rgb(0, 255, 0));
	indicator.parameters:addColor("Down", "Down color", "", core.rgb(255, 0, 0));
	indicator.parameters:addColor("Neutral", "Neutral color", "", core.rgb(128, 128, 128));
	
   
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 Up,Down, Neutral;
local first;
local source = nil;

local Price;

local  open=nil;
local  close=nil;
local  high=nil;
local  low=nil;

local Period,Method,MA ;

local One, Two, Three;


 function Prepare(nameOnly)   
 
    local name = profile:id() .. "(" ..  instance.source:name()  .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end


    Up = instance.parameters.Up;
    Down= instance.parameters.Down;
    Neutral= instance.parameters.Neutral;
	
	Period= instance.parameters.Period;
	Method= instance.parameters.Method;
 
	
	 

	source = instance.source;
	
	
	
    assert(core.indicators:findIndicator(Method) ~= nil, Method .. " indicator must be installed");
		MA=core.indicators:create(Method,  source.close, Period);
		first= MA.DATA:first();

    	
	open = instance:addStream("openup", core.Line, name, "", core.rgb(0, 0, 0), first);
    high = instance:addStream("highup", core.Line, name, "", core.rgb(0, 0, 0), first);
    low = instance:addStream("lowup", core.Line, name, "", core.rgb(0, 0, 0), first);
    close = instance:addStream("closeup", core.Line, name, "", core.rgb(0, 0, 0), first);
    instance:createCandleGroup("OVERLAY", "OVERLAY", open, high, low, close);
		
end

-- Indicator calculation routine
function Update(period, mode)
	
    open[period] = source.open[period];
	close[period] = source.close[period];
	high[period] = source.high[period];
	low[period] = source.low[period];
	
			if period < first then
			open:setColor(period, Neutral);	
			return;
			end
			
			
			
			
	
 
	
			   MA:update(mode);
	 
		 
		
		
--bullish candlesticks
if source.close[period]>MA.DATA[period] then
  open:setColor(period, Up);		
end
 
--Neutral candlesticks above the MA
if source.close[period]>MA.DATA[period] and source.close[period]<source.open[period] then
 open:setColor(period, Neutral);		
end
 
--bearish candlesticks
if source.close[period]<MA.DATA[period] then
 open:setColor(period, Down);		
end
 
--Neutral candlesticks under the MA
if source.close[period]<MA.DATA[period] and source.close[period]>source.open[period] then
 open:setColor(period, Neutral);		
end



	 
			
		 
		
				

		
 end