-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=13375
-- Id: 5816

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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("ICH Bar");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Oscillator);
	
    indicator.parameters:addGroup("Calculation");	
	indicator.parameters:addInteger("TenkanSenPeriod", "Tenkan-sen period", "Tenkan-sen period", 9, 1, 1000);
    indicator.parameters:addInteger("KijunSenPeriod", "Kijun-sen period", "Kijun-sen period", 26, 1, 1000);
    indicator.parameters:addInteger("SenkouSpanPeriod", "Senkou Span B period", "Senkou Span B period", 52, 1, 1000);

	indicator.parameters:addGroup("Style");
	 indicator.parameters:addColor("Up", "Color for Up Trend", "", core.rgb(0, 255, 0));
    indicator.parameters:addColor("Dn", "Color for Down Trend", "", core.rgb(255, 0, 0));
	 indicator.parameters:addColor("No", "Color for No Trend", "", 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 Short={};

-- Streams block
local Indicator;
local Out = nil;
local Zero;
-- Routine
function Prepare(nameOnly)

	Type = instance.parameters.Type;
    source = instance.source;
    

    local name = profile:id() .. "(" .. source:name() .. ")";
	 name = name .. ", " ..  instance.parameters.TenkanSenPeriod .. ", " .. instance.parameters.KijunSenPeriod .. ", " .. instance.parameters.SenkouSpanPeriod ;    
    instance:name(name);
	
	 

    if (not (nameOnly)) then
		Indicator = core.indicators:create("ICH", source,  instance.parameters.TenkanSenPeriod , instance.parameters.KijunSenPeriod , instance.parameters.SenkouSpanPeriod);
   
	   Short["SL"] = Indicator:getStream(0);
	   Short["TL"] = Indicator:getStream(1);
	   Short["CS"] = Indicator:getStream(2);
	   Short["A"] = Indicator:getStream(3);
	   Short["B"] = Indicator:getStream(4);
	   
	   first= math.max(Short["A"]:first(), Short["B"]:first(), Short["SL"]:first(), Short["TL"]:first(),  Short["CS"]:first()) ;
	   
        Out = instance:addStream("Out", core.Bar, name, "Out", instance.parameters.Up, first);
		Zero = instance:addStream("Zero", core.Line, name, "Zero", instance.parameters.Up, first);    
		
		Out:setPrecision(math.max(2, instance.source:getPrecision()));
	    Zero:setPrecision(math.max(2, instance.source:getPrecision()));
		 
    end
end

-- Indicator calculation routine
-- TODO: Add your code for calculation output values
function Update(period, mode)
    if period < period or  not source:hasData(period) then
	return;
	end
	
	Zero[period]=0;
	
	 Indicator:update(mode);
	
	 
	  Out[period] = 1;
	 
	 if Short["SL"][period] > Short["TL"][period] 
	 and  Short["TL"][period] > Short["B"][period] 
	 then
	  Out:setColor(period, instance.parameters.Up);  
	  
	 elseif Short["SL"][period] < Short["TL"][period] 
	 and  Short["TL"][period] < Short["B"][period] 
	 then
	  Out:setColor(period, instance.parameters.Dn);  
	 else
	  Out:setColor(period, instance.parameters.No);  
	 end
	
       
    
end