-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=27808
-- Id: 8153

--+------------------------------------------------------------------+
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--|                                            http://fxcodebase.com |
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--|                                          mario.jemic@gmail.com   |
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--+------------------------------------------------------------------+

function Init()
    indicator:name("Fibo MA fan");
    indicator:description("");
    indicator:requiredSource(core.Tick);
    indicator:type(core.Indicator);

    indicator.parameters:addString("Method", "Method", "", "MVA");
    indicator.parameters:addStringAlternative("Method", "MVA", "", "MVA");
    indicator.parameters:addStringAlternative("Method", "EMA", "", "EMA");
    indicator.parameters:addStringAlternative("Method", "KAMA", "", "KAMA");
    indicator.parameters:addStringAlternative("Method", "Wilder", "", "Wilder");
    indicator.parameters:addStringAlternative("Method", "LWMA", "", "LWMA");
    indicator.parameters:addStringAlternative("Method", "SineWMA", "", "SineWMA");
    indicator.parameters:addStringAlternative("Method", "TriMA", "", "TriMA");
    indicator.parameters:addStringAlternative("Method", "LSMA", "", "LSMA");
    indicator.parameters:addStringAlternative("Method", "SMMA", "", "SMMA");
    indicator.parameters:addStringAlternative("Method", "HMA", "", "HMA");
    indicator.parameters:addStringAlternative("Method", "ZeroLagEMA", "", "ZeroLagEMA");
    indicator.parameters:addStringAlternative("Method", "DEMA", "", "DEMA");
    indicator.parameters:addStringAlternative("Method", "T3", "", "T3");
    indicator.parameters:addStringAlternative("Method", "ITrend", "", "ITrend");
    indicator.parameters:addStringAlternative("Method", "Median", "", "Median");
    indicator.parameters:addStringAlternative("Method", "GeoMean", "", "GeoMean");
    indicator.parameters:addStringAlternative("Method", "REMA", "", "REMA");
    indicator.parameters:addStringAlternative("Method", "ILRS", "", "ILRS");
    indicator.parameters:addStringAlternative("Method", "IE/2", "", "IE/2");
    indicator.parameters:addStringAlternative("Method", "TriMAgen", "", "TriMAgen");
    indicator.parameters:addStringAlternative("Method", "JSmooth", "", "JSmooth");

    indicator.parameters:addInteger("N", "Count of MA", "No description", 5);

    indicator.parameters:addColor("Color", "Color", "Color", core.rgb(255, 255, 0));
    indicator.parameters:addInteger("widthLinReg", "Line width", "Line width", 1, 1, 5);
    indicator.parameters:addInteger("styleLinReg", "Line style", "Line style", core.LINE_SOLID);
    indicator.parameters:setFlag("styleLinReg", core.FLAG_LINE_STYLE);
end

local Method;
local N;

local first;
local source = nil;
local MA={};

local Inds={};

function Prepare(nameOnly)
    N = instance.parameters.N;
    Method = instance.parameters.Method;
    source = instance.source;
    first = source:first();
    local Period=1;
    local Prev_Period=1;
    local New_Period;
    local Ind;
    local name = profile:id() .. "(" .. source:name() .. ", " .. Method .. N .. ")";
    instance:name(name);
    if nameOnly then
        return;
    end
    assert(core.indicators:findIndicator("AVERAGES") ~= nil, "Please, download and install AVERAGES.LUA indicator");    
	
    for i=1,N,1 do
     Ind=core.indicators:create("AVERAGES", source, Method, Period, false);
	 
	  first = math.max(first, Ind.DATA:first());
     Inds[i]=Ind;
     MA[i]=instance:addStream("MA" .. Period, core.Line, name .. ".MA" .. Period, "MA" .. Period, instance.parameters.Color, first);
     MA[i]:setWidth(instance.parameters.widthLinReg);
     MA[i]:setStyle(instance.parameters.styleLinReg);
     New_Period=Prev_Period+Period;
     Prev_Period=Period;
     Period=New_Period;
	 
	 
    end
end

function Update(period, mode)
 if (period>first) then
  local i;
  for i=1,N,1 do
   Inds[i]:update(mode);
   MA[i][period]=Inds[i].DATA[period];
  end
 end 
end