gann-hilo-swing/mql5/Indicators/GannHiLoSwing/SignalAlerts.mqh

//+------------------------------------------------------------------+
//|                                                 SignalAlerts.mqh |
//|                                      Copyright 2026, Allan Niñal |
//|                                  https://www.allanninal.dev/mql5 |
//+------------------------------------------------------------------+
//| Same alert semantics as Allan's signal indicators (UT Bot,       |
//| SuperTrend): one alert per closed-bar signal (pop-up, sound,     |
//| push, e-mail), never during the history load, never twice for    |
//| the same bar, silent in the tester. A scanner watches many       |
//| symbols, so the cells that signal in the same second are sent    |
//| as ONE message (push and e-mail are rate limited).               |
//+------------------------------------------------------------------+
// SPDX-License-Identifier: LicenseRef-PolyForm-Noncommercial-1.0.0 (see LICENSE)
#property strict

input group "Alerts"
input bool   InpAlertPopup = true;          // Pop-up alert
input bool   InpAlertSound = false;         // Play a sound
input string InpSoundFile  = "alert.wav";   // Sound file (terminal Sounds folder)
input bool   InpAlertPush  = true;          // Push notification (set up MetaQuotes ID in Options)
input bool   InpAlertEmail = false;         // E-mail (set up in Options)

//--- send one message to every channel that is switched on
void SignalAlertMessage(const string product,const string msg)
  {
   if(MQLInfoInteger(MQL_TESTER) || msg=="")
      return;
   string text=product+": "+msg;
   if(InpAlertPopup)
      Alert(text);
   if(InpAlertSound && InpSoundFile!="")
      PlaySound(InpSoundFile);
   if(InpAlertPush && TerminalInfoInteger(TERMINAL_NOTIFICATIONS_ENABLED))
      SendNotification(StringSubstr(text,0,255));
   if(InpAlertEmail && TerminalInfoInteger(TERMINAL_EMAIL_ENABLED))
      SendMail(product,text);
  }
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