AlertSound.cs

using System.Diagnostics;

namespace TimeCalc;

/// <summary>
/// Plays the alarm chime with whatever audio playback the platform provides.
/// Silently does nothing if no player/sound is available.
/// </summary>
internal static class AlertSound
{
    private static readonly string[] LinuxSounds =
    {
        "/usr/share/sounds/freedesktop/stereo/complete.oga",
        "/usr/share/sounds/freedesktop/stereo/bell.oga",
        "/usr/share/sounds/alsa/Front_Center.wav",
    };

    private static readonly string[] LinuxPlayers = { "paplay", "pw-play", "aplay" };

    public static void Play()
    {
        try
        {
            if (OperatingSystem.IsWindows())
            {
                TryRun("powershell",
                    "-NoProfile -Command \"(New-Object Media.SoundPlayer 'C:\\Windows\\Media\\chimes.wav').PlaySync()\"");
                return;
            }

            if (OperatingSystem.IsMacOS())
            {
                TryRun("afplay", "/System/Library/Sounds/Glass.aiff");
                return;
            }

            var sound = LinuxSounds.FirstOrDefault(File.Exists);
            if (sound is null)
                return;

            foreach (var player in LinuxPlayers)
                if (TryRun(player, sound))
                    return;
        }
        catch
        {
            // no audio available — stay silent
        }
    }

    private static bool TryRun(string command, string arguments)
    {
        try
        {
            using var process = Process.Start(new ProcessStartInfo(command, arguments)
            {
                UseShellExecute = false,
                CreateNoWindow = true,
            });

            if (process is null)
                return false;

            process.WaitForExit();
            return process.ExitCode == 0;
        }
        catch
        {
            return false;
        }
    }
}