using System;
using System.Linq;
using System.Threading;
using System.Windows;

namespace Bedtimer
{
    public partial class App : Application
    {
        private Mutex? _single;
        private TrayHost? _tray;

        private void OnStartup(object sender, StartupEventArgs e)
        {
            var args = Environment.GetCommandLineArgs();

            // 1) Elevated branches (exit immediately after doing the thing)
            if (args.Length > 1 && args[1] == "--save-admin")
            {
                Config.SaveFromArgs(args);
                Shutdown();
                return;
            }

            // Handle elevated autostart toggle:  Bedtimer.exe --autostart-admin on|off
            AutoStart.HandleAdminArgs(args); // returns normally when not matching

            // 2) Single-instance guard
            _single = new Mutex(true, @"Global\Bedtimer_Singleton", out bool isNew);
            if (!isNew)
            {
                Shutdown();
                return;
            }

            // 3) Optional bootstrap: enable autostart only if current process is admin
            //    (Non-admin users won't be prompted on first run; they can toggle from UI later.)
            if (!AutoStart.IsEnabled() && Config.IsProcessElevated())
            {
                // Will set HKLM\...\Run directly since we’re already elevated
                AutoStart.SetEnabled(true);
            }

            // 4) Start tray + overlay
            _tray = new TrayHost();
            _tray.Init();
        }

        private void OnExit(object sender, ExitEventArgs e)
        {
            _tray?.Dispose();
            _single?.Dispose();
        }
    }
}