-- Id: 1250
-- More information about this indicator can be found at:
-- http://fxcodebase.com/

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function Init()
    strategy:name("Play Sound when new candle appears");
	strategy:setTag("NonOptimizableParameters", "Email,SendEmail,SoundFile,RecurrentSound,PlaySound,ShowAlert");
    strategy:description("");

    strategy.parameters:addGroup("Price");
    strategy.parameters:addString("Period", "Time frame", "", "m1");
    strategy.parameters:setFlag("Period", core.FLAG_PERIODS);

    strategy.parameters:addGroup("Alert");
    strategy.parameters:addBoolean("PlaySound", "Play Sound", "", true);
    strategy.parameters:addFile("SoundFile", "Sound file", "", "");
end

local gSource;
local SoundFile;

function Prepare()
    if instance.parameters.PlaySound then
        SoundFile = instance.parameters.SoundFile;
    else
        SoundFile = nil;
    end

    assert(not(PlaySound) or (PlaySound and SoundFile ~= ""), "Sound file must be specified");

    assert(instance.parameters.Period ~= "t1", "Can't be applied on ticks!");
    gSource = ExtSubscribe(1, nil, instance.parameters.Period, true, "bar");
    local name = profile:id() .. "(" .. gSource:name() .. ")";
    instance:name(name);
end

function ExtUpdate(id, source, period)
    if id == 1 then
        terminal:alertSound(SoundFile, false);
    end
end

dofile(core.app_path() .. "\\strategies\\standard\\include\\helper.lua");