///
/// Copyright (c) 2021 Sensus Slovensko a.s.
///
using System;
using System.Threading;

namespace Common
{
    public class BackgroundBeep
    {
        static Thread beepThread;
        static AutoResetEvent signalBeep;

        static BackgroundBeep()
        {
            signalBeep = new AutoResetEvent(false);
            beepThread = new Thread(() =>
            {
                while (true)
                {
                    signalBeep.WaitOne();       /// waits for an event
                    Console.Beep(500, 400);     /// frequency (Hz), duration (ms)
                }
            }, 1);
            beepThread.IsBackground = true;
            beepThread.Start();
        }

        /// <summary>
        /// Invokes one beep in a separate thread (non-blocking function)
        /// </summary>
        public static void Beep()
        {
            signalBeep.Set();
        }
    }
}