-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=66700

--+------------------------------------------------------------------+
--|                               Copyright © 2018, Gehtsoft USA LLC |
--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
--+------------------------------------------------------------------+
--|                                 Support our efforts by donating  |
--|                                    Paypal: https://goo.gl/9Rj74e |
--+------------------------------------------------------------------+
--|                                Patreon :  https://goo.gl/GdXWeN  |
--|                    BitCoin : 15VCJTLaz12Amr7adHSBtL9v8XomURo9RF  |
--|                BitCoin Cash: 1BEtS465S3Su438Kc58h2sqvVvHK9Mijtg  |
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--|                   LiteCoin : LLU8PSY2vsq7B9kRELLZQcKf5nJQrdeqwD  |
--+------------------------------------------------------------------+

local indi_alerts = {};
indi_alerts.drawing_layer = 2;
indi_alerts.inverted_arrows = false;

function Init()
	indicator:name("MACD Slow Stochastic Overlay")
	indicator:description("")
	indicator:requiredSource(core.Bar)
	indicator:type(core.Indicator)

	indicator.parameters:addGroup("MACD Calculation")
	indicator.parameters:addString("TF1", "Time frame", "", "Chart")
	indicator.parameters:addString("Price", "Data Source", "", "close")
	indicator.parameters:addStringAlternative("Price", "Open", "", "open")
	indicator.parameters:addStringAlternative("Price", "High", "", "high")
	indicator.parameters:addStringAlternative("Price", "Low", "", "low")
	indicator.parameters:addStringAlternative("Price", "Close", "", "close")
	indicator.parameters:addStringAlternative("Price", "Median", "", "median")
	indicator.parameters:addStringAlternative("Price", "Typical", "", "typical")
	indicator.parameters:addStringAlternative("Price", "Weighted ", "", "weighted")

	indicator.parameters:addInteger("SN", "Short EMA", "", 12, 2, 1000)
	indicator.parameters:addInteger("LN", "Long EMA", "", 26, 2, 1000)
	indicator.parameters:addInteger("IN", "Signal Line", "", 9, 2, 1000)

	indicator.parameters:addGroup("Slow Stochastic Calculation")
	indicator.parameters:addString("TF2", "Time frame", "", "Chart")
	indicator.parameters:addInteger("K", "K Period", "", 5, 2, 1000)
	indicator.parameters:addInteger("SD", "K Slowing Period", "", 3, 2, 1000)
	indicator.parameters:addInteger("OS_level", "Oversold level", "", 20);
	indicator.parameters:addInteger("OB_level", "Overbought level", "", 80);

	indicator.parameters:addGroup("RSI Calculation")
	indicator.parameters:addString("TF3", "Time frame", "", "Chart")
	indicator.parameters:addInteger("rsi_periods", "Period", "", 5, 2, 1000)
	indicator.parameters:addInteger("rsi_os_level", "Oversold level", "", 20);
	indicator.parameters:addInteger("rsi_ob_level", "Overbought level", "", 80);

	indicator.parameters:addGroup("Selector")
	indicator.parameters:addBoolean("One", "MACD Coloring", "", true)
	indicator.parameters:addBoolean("Two", "Stochastic Coloring", "", true)

	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("OB_entry", "Overbought entry color", "", core.rgb(128, 0, 0))
	indicator.parameters:addColor("OB_exit", "Overbought exit color", "", core.rgb(0, 128, 0))
	indicator.parameters:addColor("OS_entry", "Oversold entry color", "", core.rgb(128, 0, 0))
	indicator.parameters:addColor("OS_exit", "Oversold exit color", "", core.rgb(0, 128, 0))

	indi_alerts:AddParameters(indicator.parameters);
    indi_alerts:AddAlert("RSI/Overbought");
    indi_alerts:AddAlert("RSI/Oversold");
end

-- Sources v1.1
local sources = {}
sources.last_id = 1
sources.ids = {}
sources.items = {}
function sources:Request(id, source, tf)
	local ids = {}
	ids.loading_id = self.last_id
	ids.loaded_id = self.last_id + 1
	ids.loaded = false
	self.last_id = self.last_id + 2
	self.ids[id] = ids

	self.items[id] = core.host:execute("getSyncHistory", source:instrument(), tf, source:isBid(), 100, ids.loaded_id, ids.loading_id)
	return self.items[id];
end
function sources:AsyncOperationFinished(cookie, successful, message, message1, message2)
	for index, ids in pairs(self.ids) do
		if ids.loaded_id == cookie then
			ids.loaded = true
			self.allLoaded = nil
			return true
		elseif ids.loading_id == cookie then
			ids.loaded = false
			self.allLoaded = false
			return false
		end
	end
	return false
end
function sources:IsAllLoaded()
	if self.allLoaded == nil then
		for index, ids in pairs(self.ids) do
			if not ids.loaded then
				self.allLoaded = false
				return false
			end
		end
		self.allLoaded = true
	end
	return self.allLoaded
end

local Up, Down
local first
local source = nil

local K, SK, D, Stochastic

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

local SN, LN, IN, Price

local TF = {}
local weekoffset, dayoffset

local loading = {}
local Source = {}

local macd

local One, Two
local OB_entry;
local OB_exit;
local OS_entry;
local OS_exit;
local OS_level;
local OB_level;
local show_rsi;

local TF3;
local rsi_periods;
local rsi_os_level;
local rsi_ob_level;
local rsi;

function GetSource(id, tf)
	if tf == "Chart" then
		return source;
	end
	return sources:Request(id, source, tf);
end

function Prepare(nameOnly)
	indi_alerts:Prepare();
    indi_alerts.source = instance.source;
    if indi_alerts.drawing_layer >= 100 then
        instance:drawOnMainChart(true);
    else
        instance:ownerDrawn(true);
	end
	
	local name = profile:id() .. "(" .. instance.source:name() .. ")"
	instance:name(name)

	if (nameOnly) then
		return
	end

	TF3 = instance.parameters.TF3;
	rsi_periods = instance.parameters.rsi_periods;
	rsi_os_level = instance.parameters.rsi_os_level;
	rsi_ob_level = instance.parameters.rsi_ob_level;
	Up = instance.parameters.Up
	Down = instance.parameters.Down
	OB_entry = instance.parameters.OB_entry;
	OB_exit = instance.parameters.OB_exit;
	OS_entry = instance.parameters.OS_entry;
	OS_exit = instance.parameters.OS_exit;
	OS_level = instance.parameters.OS_level;
	OB_level = instance.parameters.OB_level;

	dayoffset = core.host:execute("getTradingDayOffset")
	weekoffset = core.host:execute("getTradingWeekOffset")

	IN = instance.parameters.IN
	SN = instance.parameters.SN
	LN = instance.parameters.LN
	Price = instance.parameters.Price

	K = instance.parameters.K
	SD = instance.parameters.SD

	One = instance.parameters.One
	Two = instance.parameters.Two

	if (LN <= SN) then
		error("The short EMA period must be smaller than long EMA period")
	end

	source = instance.source
	first = source:first()

	local Source1 = GetSource(1, instance.parameters.TF1);
	macd = core.indicators:create("MACD", Source1.close, SN, LN, IN)
	first = macd.DATA:first();

	local Source2 = GetSource(2, instance.parameters.TF2);
	Stochastic = core.indicators:create("SSD", Source2, K, SD, 3)
	first = math.max(first, Stochastic.D:first())

	local Source3 = GetSource(3, instance.parameters.TF3);
	rsi = core.indicators:create("RSI", Source3, rsi_periods);
	first = math.max(first, rsi.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

function Draw(stage, context) indi_alerts:Draw(stage, context, source); end

-- Indicator calculation routine
function Update(period, mode)
	if not sources:IsAllLoaded() then
		return
	end

	open[period] = source.open[period]
	close[period] = source.close[period]
	high[period] = source.high[period]
	low[period] = source.low[period]

	if period < first then
		return
	end
	
	if One then
		macd:update(mode)
		local S1 = 0
		local p1 = core.findDate(macd.DATA, source:date(period), false);
		if macd.HISTOGRAM[p1] > macd.HISTOGRAM[p1 - 1] then
			open:setColor(period, Up)
		elseif macd.HISTOGRAM[p1] < macd.HISTOGRAM[p1 - 1] then
			open:setColor(period, Down)
		end
	end

	if Two then
		Stochastic:update(mode)
		local p2 = core.findDate(macd.DATA, source:date(period), false);
		if core.crossesUnder(Stochastic.K, OS_level, p2) then
			open:setColor(period, OS_entry);
		elseif core.crossesOver(Stochastic.K, OS_level, p2) then
			open:setColor(period, OS_exit);
		elseif core.crossesOver(Stochastic.K, OB_level, p2) then
			open:setColor(period, OB_entry);
		elseif core.crossesUnder(Stochastic.K, OB_level, p2) then
			open:setColor(period, OB_exit);
		end
	end
	rsi:update(mode);
	for _, alert in ipairs(indi_alerts.Alerts) do Activate(alert, period, period ~= source:size() - 1); end
end

function Activate(alert, period, historical_period)
    if indi_alerts.Live ~= "Live" then period = period - 1; end
    alert.Alert[period] = 0;
    if not alert.ON then
        if indi_alerts.FIRST then indi_alerts.FIRST = false; end
        return;
	end
	local p3 = core.findDate(rsi.DATA, source:date(period), false);
	if alert.id == 1 then
        if core.crossesOver(rsi.DATA, rsi_ob_level, p3) then
            alert:UpAlert(source, period, alert.Label .. ". Cross over", source.high[period], historical_period);
		elseif core.crossesUnder(rsi.DATA, rsi_ob_level, p3) then
            alert:DownAlert(source, period, alert.Label .. ". Cross under", source.low[period], historical_period);
        end
    end
    if alert.id == 2 then
        if core.crossesOver(rsi.DATA, rsi_os_level, p3) then
            alert:UpAlert(source, period, alert.Label .. ". Cross over", source.high[period], historical_period);
		elseif core.crossesUnder(rsi.DATA, rsi_os_level, p3) then
            alert:DownAlert(source, period, alert.Label .. ". Cross under", source.low[period], historical_period);
        end
	end

    if indi_alerts.FIRST then indi_alerts.FIRST = false; end
end

function AsyncOperationFinished(cookie, successful, message, message1, message2)
	indi_alerts:AsyncOperationFinished(cookie, success, message, message1, message2)
	if sources:AsyncOperationFinished(cookie, successful, message, message1, message2) and sources:IsAllLoaded() then
		instance:updateFrom(0);
	end
end

indi_alerts.Version = "1.10";
indi_alerts.last_id = 0;
indi_alerts.FIRST = true;
indi_alerts._alerts = {};
indi_alerts._advanced_alert_timer = nil;
function indi_alerts:AddParameters(parameters)
    indicator.parameters:addGroup("Alert Mode");  
    indicator.parameters:addString("Live", "End of Turn / Live", "", "Live");
    indicator.parameters:addStringAlternative("Live", "End of Turn", "", "End of Turn");
    indicator.parameters:addStringAlternative("Live", "Live", "", "Live");
    indicator.parameters:addBoolean("strategy_output", "Output for strategies", "Used by the strategies", false);

    indicator.parameters:addInteger("ToTime", "Convert the date to", "", 6)
    indicator.parameters:addIntegerAlternative("ToTime", "EST", "", 1)
    indicator.parameters:addIntegerAlternative("ToTime", "UTC", "", 2)
    indicator.parameters:addIntegerAlternative("ToTime", "Local", "", 3)
    indicator.parameters:addIntegerAlternative("ToTime", "Server", "", 4)
    indicator.parameters:addIntegerAlternative("ToTime", "Financial", "", 5)
    indicator.parameters:addIntegerAlternative("ToTime", "Display", "", 6)
    
    indicator.parameters:addGroup("Alert Style");
    indicator.parameters:addInteger("Size", "Label Size", "", 10, 1 , 100);
    
    indicator.parameters:addGroup("Alerts");
    indicator.parameters:addBoolean("Show", "Show Dialog box Alert", "", true);
    indicator.parameters:addBoolean("ShowAlert", "Show Alert", "", true);
    
    indicator.parameters:addGroup("Alerts Sound");
    indicator.parameters:addBoolean("PlaySound", "Play Sound", "", true);    
    indicator.parameters:addBoolean("RecurrentSound", "Recurrent Sound", "", false);
    
    indicator.parameters:addGroup("Alerts Email");
    indicator.parameters:addBoolean("SendEmail", "Send Email", "", true);
    indicator.parameters:addString("Email", "Email", "", "");
    indicator.parameters:setFlag("Email", core.FLAG_EMAIL);

    indicator.parameters:addGroup("External Alerts");
    indicator.parameters:addBoolean("use_advanced_alert", "Send Advanced Alert", "Telegram/Discord/other platform (like MT4)", false)
	indicator.parameters:addString("advanced_alert_key", "Advanced Alert Key",
		"You can get a key via @profit_robots_bot Telegram Bot. Visit ProfitRobots.com for Discord/other platform keys", "")
end

function indi_alerts:AsyncOperationFinished(cookie, success, message, message1, message2) if cookie == self._advanced_alert_timer and #self._alerts > 0 then if self._advanced_alert_key == nil then return; end local data = self:ArrayToJSON(self._alerts); self._alerts = {}; local req = http_lua.createRequest(); local query = string.format('{"Key":"%s","StrategyName":"%s","Platform":"FXTS2","Notifications":%s}', self._advanced_alert_key, string.gsub(self.StrategyName or "", '"', '\\"'), data); req:setRequestHeader("Content-Type", "application/json"); req:setRequestHeader("Content-Length", tostring(string.len(query))); req:start("http://profitrobots.com/api/v1/notification", "POST", query); end end
function indi_alerts:ToJSON(item)
    local json = {};
    function json:AddStr(name, value) local separator = ""; if self.str ~= nil then separator = ","; else self.str = ""; end self.str = self.str .. string.format("%s\"%s\":\"%s\"", separator, tostring(name), tostring(value)); end
    function json:AddNumber(name, value) local separator = ""; if self.str ~= nil then separator = ","; else self.str = ""; end self.str = self.str .. string.format("%s\"%s\":%f", separator, tostring(name), value or 0); end
    function json:AddBool(name, value) local separator = ""; if self.str ~= nil then separator = ","; else self.str = ""; end self.str = self.str .. string.format("%s\"%s\":%s", separator, tostring(name), value and "true" or "false"); end
    function json:ToString() return "{" .. (self.str or "") .. "}"; end
    local first = true; for idx,t in pairs(item) do  local stype = type(t) if stype == "number" then json:AddNumber(idx, t); elseif stype == "string" then json:AddStr(idx, t); elseif stype == "boolean" then json:AddBool(idx, t); elseif stype == "function" or stype == "table" then else core.host:trace(tostring(idx) .. " " .. tostring(stype)); end end
    return json:ToString();
end
function indi_alerts:ArrayToJSON(arr) local str = "["; for i, t in ipairs(self._alerts) do local json = self:ToJSON(t); if str == "[" then str = str .. json; else str = str .. "," .. json; end end return str .. "]"; end
function indi_alerts:AddAlert(Label)
    self.last_id = self.last_id + 1;
    indicator.parameters:addGroup(Label .. " Alert");

    indicator.parameters:addBoolean("ON" .. self.last_id , "Show " .. Label .." Alert" , "", true);

    indicator.parameters:addString("drawing_mode" .. self.last_id, "Drawing mode", "", "arrows");
    indicator.parameters:addStringAlternative("drawing_mode" .. self.last_id, "Arrows", "", "arrows");
    indicator.parameters:addStringAlternative("drawing_mode" .. self.last_id, "Vertical lines", "", "vlines");

    indicator.parameters:addFile("Up" .. self.last_id, Label .. " Cross Over Sound", "", "");
    indicator.parameters:setFlag("Up" .. self.last_id, core.FLAG_SOUND);
    indicator.parameters:addInteger("UpSymbol" .. self.last_id, "Up Symbol", "", 217);
    indicator.parameters:addColor("UpColor" .. self.last_id, "Up Color", "", core.rgb(0, 255, 0));
    
    indicator.parameters:addFile("Down" .. self.last_id, Label .. " Cross Under Sound", "", "");
    indicator.parameters:setFlag("Down" .. self.last_id, core.FLAG_SOUND);
    indicator.parameters:addInteger("DownSymbol" .. self.last_id, "Down Symbol", "", 218);
    indicator.parameters:addColor("DownColor" .. self.last_id, "Down Color", "", core.rgb(255, 0, 0));

    indicator.parameters:addString("Label" .. self.last_id, "Label", "", Label);
end

function indi_alerts:AddSingleAlert(Label)
    self.last_id = self.last_id + 1;
    indicator.parameters:addGroup(Label .. " Alert");

    indicator.parameters:addBoolean("ON" .. self.last_id , "Show " .. Label .." Alert" , "", true);

    indicator.parameters:addFile("Up" .. self.last_id, Label .. " Sound", "", "");
    indicator.parameters:setFlag("Up" .. self.last_id, core.FLAG_SOUND);
    indicator.parameters:addInteger("UpSymbol" .. self.last_id, "Symbol", "", 217);
    indicator.parameters:addColor("UpColor" .. self.last_id, "Color", "", core.rgb(0, 255, 0));
    
    indicator.parameters:addString("Label" .. self.last_id, "Label", "", Label);
end

indi_alerts.init = false;

function indi_alerts:DrawAlert(context, alert, period)
    if not alert.Alert:hasData(period) then
        return;
    end

    if alert.Alert[period] == 1 then
        local x = context:positionOfBar(period);
        if alert.DrawingMode == "arrows" then
            visible, y = context:pointOfPrice(alert.AlertLevel[period]);
            width, height = context:measureText(self.FONT_ID, alert.UpSymbol, 0);
            local x1 = x - width / 2;
            local x2 = x + width / 2;
            local y1, y2;
            if self.inverted_arrows then
                y1 = y;
                y2 = y + height;
            else
                y1 = y - height;
                y2 = y;
            end
			context:drawText(self.FONT_ID, alert.UpSymbol, alert.UpColor, -1, x1, y1, x2, y2, 0);
        else
            context:drawLine(alert.UpLinePen, x, context:top(), x, context:bottom());
        end
	elseif alert.Alert[period] == -1 then
        local x = context:positionOfBar(period);
        if alert.DrawingMode == "arrows" then
            visible, y = context:pointOfPrice(alert.AlertLevel[period]);
            width, height = context:measureText(self.FONT_ID, alert.DownSymbol, 0);
            local x1 = x - width / 2;
            local x2 = x + width / 2;
            local y1, y2;
            if self.inverted_arrows then
                y1 = y - height;
                y2 = y;
            else
                y1 = y;
                y2 = y + height;
            end
            context:drawText(self.FONT_ID, alert.DownSymbol, alert.DownColor, -1, x1, y1, x2, y2, 0);
        else
            context:drawLine(alert.DownLinePen, x, context:top(), x, context:bottom());
        end
    end
end
indi_alerts.NextId = 1;
function indi_alerts:Draw(stage, context)
    if stage ~= indi_alerts.drawing_layer then
        return;
    end
    if not self.init then
        local createFont = false;
        for _, level in ipairs(self.Alerts) do
            if level.DrawingMode == "vlines" then
                level.UpLinePen = self.NextId;
                self.NextId = self.NextId + 1;
                level.DownLinePen = self.NextId;
                self.NextId = self.NextId + 1;
                context:createPen(level.UpLinePen, context.SOLID, 1, level.UpColor);
                context:createPen(level.DownLinePen, context.SOLID, 1, level.DownColor);
            else
                createFont = true;
            end
        end
        if createFont and self.FONT_ID == nil then
            self.FONT_ID = self.NextId;
			self.NextId = self.NextId + 1;
            context:createFont(self.FONT_ID, "Wingdings", context:pointsToPixels(self.Size), context:pointsToPixels(self.Size), 0);
        end
        self.init = true;
    end
    for period = math.max(context:firstBar(), self.source:first()), math.min(context:lastBar(), self.source:size()-1), 1 do
        for _, level in ipairs(self.Alerts) do
            self:DrawAlert(context, level, period);
        end
    end
end
indi_alerts.Alerts = {};
function indi_alerts:GetTimezone()
    local tz = instance.parameters.ToTime;
    if tz == 1 then
        return core.TZ_EST
    elseif tz == 2 then
        return core.TZ_UTC
    elseif tz == 3 then
        return core.TZ_LOCAL
    elseif tz == 4 then
        return core.TZ_SERVER
    elseif tz == 5 then
        return core.TZ_FINANCIAL
    elseif tz == 6 then
        return core.TZ_TS
    end
end
function indi_alerts:Prepare()
    self.Show = instance.parameters.Show;
    self.Live = instance.parameters.Live;
    self.ShowAlert = instance.parameters.ShowAlert;
    self.ToTime = self:GetTimezone();
    
    self.Size = instance.parameters.Size;
    self.SendEmail = instance.parameters.SendEmail;

    self.PlaySound = instance.parameters.PlaySound;
    local i;
    for i = 1, 100 do 
        local on = instance.parameters:getBoolean("ON" .. i);
        if on == nil then
            break;
        end 
        local alert = {};
        alert.id = i;
        alert.Label = instance.parameters:getString("Label" .. i);
        alert.ON = on;
        alert.DrawingMode = instance.parameters:getString("drawing_mode" .. i);
        alert.UpSymbol = string.char(instance.parameters:getInteger("UpSymbol" .. i));
        local down_symbol = instance.parameters:getInteger("DownSymbol" .. i);
        if down_symbol ~= nil then
            alert.DownSymbol = string.char(down_symbol);
        end
        alert.UpColor = instance.parameters:getColor("UpColor" .. i);
        alert.DownColor = instance.parameters:getColor("DownColor" .. i);
        alert.Up = self.PlaySound and instance.parameters:getString("Up" .. i) or nil;
        alert.Down = self.PlaySound and instance.parameters:getString("Down" .. i) or nil;
        if alert.DownSymbol == nil then
            alert.DownSymbol = alert.UpSymbol;
            alert.DownColor = alert.UpColor;
            alert.Down = alert.Up;
        end
        assert(not(self.PlaySound) or (self.PlaySound and alert.Up ~= "") or (self.PlaySound and alert.Up ~= ""), "Sound file must be chosen"); 
        assert(not(self.PlaySound) or (self.PlaySound and alert.Down ~= "") or (self.PlaySound and alert.Down ~= ""), "Sound file must be chosen");
        alert.U = nil;
        alert.D = nil;
        if instance.parameters.strategy_output then
            alert.Alert = instance:addStream("strat_signal_" .. i, core.Dot, "strat_signal_" .. i, "Strategy signal #" .. i, core.rgb(0, 0, 0), 0, 0);
        else
            alert.Alert = instance:addInternalStream(0, 0);
        end
        alert.AlertLevel = instance:addInternalStream(0, 0);
        function alert:DownAlert(source, period, text, level, historical_period)
            shift = indi_alerts.Live ~= "Live" and 1 or 0;
            self.Alert[period] = -1;
            self.AlertLevel[period] = level;
            self.U = nil;
            if self.D ~= source:serial(period) and period == source:size() - 1 - shift and not indi_alerts.FIRST then
                self.D = source:serial(period);
                if not historical_period then
                    indi_alerts:SoundAlert(self.Down);
                    indi_alerts:EmailAlert(self.Label, text, period);
                    indi_alerts:SendAlert(self.Label, text, period);
                    if indi_alerts.Show then
                        indi_alerts:Pop(self.Label, text);
                    end
                end
            end
        end
        function alert:UpAlert(source, period, text, level, historical_period)
            shift = indi_alerts.Live ~= "Live" and 1 or 0;
            self.Alert[period] = 1;
            self.AlertLevel[period] = level;
            self.D = nil;
            if self.U ~= source:serial(period) and period == source:size() - 1 - shift and not indi_alerts.FIRST then
                self.U = source:serial(period);
                if not historical_period then
                    indi_alerts:SoundAlert(self.Up);
                    indi_alerts:EmailAlert(self.Label, text, period);
                    indi_alerts:SendAlert(self.Label, text, period);
                    if indi_alerts.Show then
                        indi_alerts:Pop(self.Label, text);
                    end
                end
            end
        end
        function alert:GetLast(period)
            for i = period, 0, -1 do
                if self.Alert:hasData(i) and self.Alert[i] ~= 0 then
                    return self.Alert[i], i, self.AlertLevel[i];
                end
            end
        end
        self.Alerts[#self.Alerts + 1] = alert;
    end

    self.Email = self.SendEmail and instance.parameters.Email or nil;
    assert(not(self.SendEmail) or (self.SendEmail and self.Email ~= ""), "E-mail address must be specified");
    self.RecurrentSound = instance.parameters.RecurrentSound;

    if instance.parameters.advanced_alert_key ~= "" and instance.parameters.use_advanced_alert then
        self._advanced_alert_key = instance.parameters.advanced_alert_key;
        require("http_lua");
        self._advanced_alert_timer = 1234;
        core.host:execute("setTimer", self._advanced_alert_timer, 1);
    end
end

function indi_alerts:Pop(label, note)
    core.host:execute("prompt", 1, label, self.source:instrument() .. " " .. label .. " : " .. note);
end

function indi_alerts:SoundAlert(Sound)
    if not self.PlaySound then
        return;
    end
    terminal:alertSound(Sound, self.RecurrentSound);
end

function indi_alerts:EmailAlert(label, Subject, period)
    if not self.SendEmail then
        return
    end

    local now = self.source:date(period);
    now = core.host:execute("convertTime", core.TZ_EST, self.ToTime, now);
    local DATA = core.dateToTable(now)
    local delim = "\013\010";  
    local Note = profile:id().. delim.. " Label : " ..label  .. delim .. " Alert : " .. Subject;   
    local Symbol = "Instrument : " .. self.source:instrument() ;
    local Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec; 
    local TF = "Time Frame : " .. source:barSize()
    local text = Note  .. delim ..  Symbol .. delim .. TF .. delim .. Time;
    terminal:alertEmail(self.Email, profile:id(), text);
end

function indi_alerts:SendAlert(label, Subject, period)
    if not self.ShowAlert then
        return;
    end
    
    local now = self.source:date(period);
    now = core.host:execute("convertTime", core.TZ_EST, self.ToTime, now);
    local DATA = core.dateToTable(now)
    local delim = "\013\010";  
    local Note = profile:id().. delim.. " Label : " ..label  .. delim .. " Alert : " .. Subject;
    local Symbol= "Instrument : " .. self.source:instrument() ;
    local Time =  " Date : " .. DATA.month.." / ".. DATA.day .." Time:  ".. DATA.hour  .." / ".. DATA.min .." / ".. DATA.sec;  
    local TF = "Time Frame : " .. source:barSize()
    local text = Note  .. delim ..  Symbol .. delim .. TF .. delim .. Time;
    terminal:alertMessage(self.source:instrument(), self.source[NOW], text, self.source:date(NOW));
end

function indi_alerts:AlertTelegram(message, instrument, timeframe) local alert = {}; alert.Text = message or ""; alert.Instrument = instrument or ""; alert.TimeFrame = timeframe or ""; self._alerts[#self._alerts + 1] = alert; end