-- Id: 8137
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=27797

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function Init()
    indicator:name("RSI-Average indicator");
    indicator:description("RSI-Average indicator");
    indicator:requiredSource(core.Tick);
    indicator:type(core.Oscillator);

    indicator.parameters:addGroup("Calculation");
    indicator.parameters:addInteger("RSI_Period", "RSI period", "", 5);
    indicator.parameters:addInteger("MA_Period", "MA period", "", 3);
    indicator.parameters:addString("MA_Method", "MA method", "", "EMA");
    indicator.parameters:addStringAlternative("MA_Method", "MVA", "", "MVA");
    indicator.parameters:addStringAlternative("MA_Method", "EMA", "", "EMA");
    indicator.parameters:addStringAlternative("MA_Method", "KAMA", "", "KAMA");
    indicator.parameters:addStringAlternative("MA_Method", "Wilder", "", "Wilder");
    indicator.parameters:addStringAlternative("MA_Method", "LWMA", "", "LWMA");
    indicator.parameters:addStringAlternative("MA_Method", "SineWMA", "", "SineWMA");
    indicator.parameters:addStringAlternative("MA_Method", "TriMA", "", "TriMA");
    indicator.parameters:addStringAlternative("MA_Method", "LSMA", "", "LSMA");
    indicator.parameters:addStringAlternative("MA_Method", "SMMA", "", "SMMA");
    indicator.parameters:addStringAlternative("MA_Method", "HMA", "", "HMA");
    indicator.parameters:addStringAlternative("MA_Method", "ZeroLagEMA", "", "ZeroLagEMA");
    indicator.parameters:addStringAlternative("MA_Method", "DEMA", "", "DEMA");
    indicator.parameters:addStringAlternative("MA_Method", "T3", "", "T3");
    indicator.parameters:addStringAlternative("MA_Method", "ITrend", "", "ITrend");
    indicator.parameters:addStringAlternative("MA_Method", "Median", "", "Median");
    indicator.parameters:addStringAlternative("MA_Method", "GeoMean", "", "GeoMean");
    indicator.parameters:addStringAlternative("MA_Method", "REMA", "", "REMA");
    indicator.parameters:addStringAlternative("MA_Method", "ILRS", "", "ILRS");
    indicator.parameters:addStringAlternative("MA_Method", "IE/2", "", "IE/2");
    indicator.parameters:addStringAlternative("MA_Method", "TriMAgen", "", "TriMAgen");
    indicator.parameters:addStringAlternative("MA_Method", "JSmooth", "", "JSmooth");

    indicator.parameters:addGroup("Style");
    indicator.parameters:addColor("RSIclr", "RSI Color", "RSI Color", core.rgb(0, 255, 0));
    indicator.parameters:addColor("MAclr", "MA Color", "MA Color", core.rgb(255, 0, 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);
    indicator.parameters:addColor("UP_Arrow_clr", "UP arrow color", "UP arrow color", core.rgb(255, 255, 0));
    indicator.parameters:addColor("DN_Arrow_clr", "DN arrow color", "DN arrow color", core.rgb(0, 255, 255));
	
	indicator.parameters:addInteger("Size", "Arrow Size", "Size",10);
end

local first;
local source = nil;
local RSI_Period;
local MA_Period;
local MA_Method;
local RSI_Buff = nil;
local MA_Buff = nil;
local RSI;
local MA;
local UP_Arrow = nil;
local DN_Arrow = nil;
local Size;
 function Prepare(nameOnly) 
    source = instance.source;
    RSI_Period=instance.parameters.RSI_Period;
    MA_Period=instance.parameters.MA_Period;
    MA_Method=instance.parameters.MA_Method;
	Size=instance.parameters.Size;
	
	   local name = profile:id() .. "(" .. source:name() .. ", " .. instance.parameters.RSI_Period .. ", " .. instance.parameters.MA_Period .. ", " .. instance.parameters.MA_Method .. ")";
    instance:name(name);
	
	 if   (nameOnly) then
        return;
    end
   
	assert(core.indicators:findIndicator("AVERAGES") ~= nil, "Please, download and install AVERAGES.LUA indicator");    
	
    RSI = core.indicators:create("RSI", source, RSI_Period);
    MA = core.indicators:create("AVERAGES", RSI.DATA, MA_Method, MA_Period, false);
	
	first =MA.DATA:first();
 
	
    RSI_Buff = instance:addStream("RSI", core.Line, name .. ".RSI", "RSI", instance.parameters.RSIclr, first);
    RSI_Buff:setPrecision(math.max(2, instance.source:getPrecision()));
    MA_Buff = instance:addStream("MA", core.Line, name .. ".MA", "MA", instance.parameters.MAclr, first);
    MA_Buff:setPrecision(math.max(2, instance.source:getPrecision()));
    RSI_Buff:setWidth(instance.parameters.widthLinReg);
    RSI_Buff:setStyle(instance.parameters.styleLinReg);
    MA_Buff:setWidth(instance.parameters.widthLinReg);
    MA_Buff:setStyle(instance.parameters.styleLinReg);
    UP_Arrow = instance:createTextOutput ("Up", "Up", "Wingdings", Size, core.H_Center, core.V_Bottom, instance.parameters.UP_Arrow_clr);
    DN_Arrow = instance:createTextOutput ("Dn", "Dn", "Wingdings", Size, core.H_Center, core.V_Top, instance.parameters.DN_Arrow_clr);
end

function Update(period, mode)
   if (period>first) then
   
   UP_Arrow:setNoData (period);
   DN_Arrow:setNoData (period);
   
    RSI:update(mode);
    MA:update(mode);
    RSI_Buff[period] = RSI.DATA[period];
    MA_Buff[period] = MA.DATA[period];
    if RSI_Buff[period]>MA_Buff[period] and RSI_Buff[period-1]<MA_Buff[period-1] then
     UP_Arrow:set(period, MA_Buff[period], "\225", "Up");
    elseif RSI_Buff[period]<MA_Buff[period] and RSI_Buff[period-1]>MA_Buff[period-1] then
     DN_Arrow:set(period, MA_Buff[period], "\226", "Dn");
    end
   end 
end