using System;
using Microsoft.UI.Dispatching;
using Microsoft.UI.Xaml;
using SimpleRayTracer.Interop;

// To learn more about WinUI, the WinUI project structure,
// and more about our project templates, see: http://aka.ms/winui-project-info.

namespace SimpleRayTracer
{
    /// <summary>
    /// An empty window that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainWindow : Window
    {
        private InteropSmokeTest? _smoke;
        private DispatcherQueueTimer? _timer;

        public MainWindow()
        {
            InitializeComponent();
        }

        private void RunSmokeTestButton_Click(object sender, RoutedEventArgs e)
        {
            RunSmokeTestButton.IsEnabled = false;
            StatusText.Text = "Starting...";

            try
            {
                _timer?.Stop();
                _timer = null;

                _smoke?.Dispose();
                _smoke = new InteropSmokeTest();

                _smoke.StartAsync(width: 640, height: 360);

                RenderImage.Source = _smoke.Bitmap;
                StatusText.Text = "Rendering...";

                _timer = DispatcherQueue.CreateTimer();
                _timer.Interval = TimeSpan.FromMilliseconds(33);
                _timer.Tick += (_, _) =>
                {
                    _smoke?.CopyLatestToBitmap();
                    if (_smoke?.IsDone == true)
                    {
                        StatusText.Text = "Done";
                        _timer?.Stop();
                    }
                };
                _timer.Start();
            }
            catch (Exception ex)
            {
                StatusText.Text = ex.Message;
                RunSmokeTestButton.IsEnabled = true;
            }
        }
    }
}