using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Imaging;
using XP.Camera.Calibration.ViewModels;
using XP.ImageProcessing.RoiControl.Controls;

namespace XP.Camera.Calibration.Controls;

public partial class CalibrationControl : UserControl
{
    private CalibrationViewModel? _viewModel;

    public CalibrationControl()
    {
        InitializeComponent();
        Loaded += CalibrationControl_Loaded;
    }

    private void CalibrationControl_Loaded(object sender, RoutedEventArgs e)
    {
        if (DataContext is CalibrationViewModel viewModel)
        {
            _viewModel = viewModel;
            _viewModel.PropertyChanged += OnViewModelPropertyChanged;
        }
    }

    private void OnViewModelPropertyChanged(object? sender, PropertyChangedEventArgs e)
    {
        if (e.PropertyName == nameof(CalibrationViewModel.OverlayImage))
        {
            UpdateDetectionOverlay();
        }
    }

    private void UpdateDetectionOverlay()
    {
        if (_viewModel?.OverlayImage == null)
        {
            roiCanvas.ClearDetectionOverlay();
            return;
        }

        var overlayCanvas = new Canvas
        {
            Width = _viewModel.OverlayImage.PixelWidth,
            Height = _viewModel.OverlayImage.PixelHeight,
            IsHitTestVisible = false
        };

        var image = new System.Windows.Controls.Image
        {
            Source = _viewModel.OverlayImage,
            Width = _viewModel.OverlayImage.PixelWidth,
            Height = _viewModel.OverlayImage.PixelHeight,
            IsHitTestVisible = false
        };

        overlayCanvas.Children.Add(image);
        roiCanvas.SetDetectionOverlayCanvas(overlayCanvas);
    }
}