using Aurora;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using VisionCommon;
using VisionCommonUI;
using VisionUI;

namespace WeldingCommon.Views
{
    /// <summary>
    /// Interaction logic for WDSelectScoutField.xaml
    /// </summary>
    public partial class WDSelectScoutField : Window
    {
        public WDSelectScoutField(IAuroraEnvironment aurora)
        {
            InitializeComponent();

            var viewmodel = new WDSelectScoutFieldViewModel(aurora);
            DataContext = viewmodel;
            viewmodel.RequestClose += () => Close();
        }

        // 마우스 드래그 시작 위치
        public class RectangleAdorner : Adorner
        {
            private Point? mStartPoint;
            private Point? mEndPoint;
            private readonly Pen mPen;

            public RectangleAdorner(UIElement adornedElement) : base(adornedElement)
            {
                mPen = new Pen(Brushes.Red, 1) {
                    DashStyle = DashStyles.Dash
                };
            }

            public void Start(Point startPoint)
            {
                this.mStartPoint = startPoint;
                this.InvalidateVisual();
            }

            public void Update(Point endPoint)
            {
                this.mEndPoint = endPoint;
                this.InvalidateVisual();
            }

            public void Stop()
            {
                this.mStartPoint = null;
                this.mEndPoint = null;
                this.InvalidateVisual();
            }

            protected override void OnRender(DrawingContext drawingContext)
            {
                if (this.mStartPoint.HasValue && this.mEndPoint.HasValue) {
                    var rect = new Rect(this.mStartPoint.Value, this.mEndPoint.Value);
                    drawingContext.DrawRectangle(null, mPen, rect);
                }
            }
        }

        // 마우스 드래그 시작 위치
        Point? _DragStart = null;

        // ListBox에서 마우스 이벤트 처리
        private void ListBox_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            var listBox = (ListBox)sender;
            var adornerLayer = AdornerLayer.GetAdornerLayer(listBox);
            var adorner = new RectangleAdorner(listBox);
            adornerLayer.Add(adorner);
            adorner.Start(e.GetPosition(listBox));

            _DragStart = e.GetPosition(listBox);

            foreach (var item in listBox.Items) {
                var listBoxItem = (ListBoxItem)listBox.ItemContainerGenerator.ContainerFromItem(item);
                var itemRect = VisualTreeHelper.GetDescendantBounds(listBoxItem);
                var itemBounds = listBoxItem.TransformToAncestor(listBox).TransformBounds(itemRect);

                if (itemBounds.Contains(_DragStart.Value)) {
                    listBoxItem.IsSelected = !listBoxItem.IsSelected;
                }
            }
        }

        private void ListBox_PreviewMouseMove(object sender, MouseEventArgs e)
        {
            if (e.LeftButton == MouseButtonState.Pressed && _DragStart != null) {
                var listBox = (ListBox)sender;
                var adornerLayer = AdornerLayer.GetAdornerLayer(listBox);
                var adorner = (RectangleAdorner)adornerLayer.GetAdorners(listBox)[0];
                adorner.Update(e.GetPosition(listBox));
            }
        }

        private void ListBox_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            var listBox = (ListBox)sender;
            var adornerLayer = AdornerLayer.GetAdornerLayer(listBox);
            var adorner = (RectangleAdorner)adornerLayer.GetAdorners(listBox)[0];
            adornerLayer.Remove(adorner);

            if (_DragStart != null) {
                var dragEnd = e.GetPosition(listBox);

                // 사각형 영역 계산
                var rect = new Rect(_DragStart.Value, dragEnd);

                foreach (var item in listBox.Items) {
                    var listBoxItem = (ListBoxItem)listBox.ItemContainerGenerator.ContainerFromItem(item);
                    var itemRect = VisualTreeHelper.GetDescendantBounds(listBoxItem);
                    var itemBounds = listBoxItem.TransformToAncestor(listBox).TransformBounds(itemRect);

                    // 원래 코드
                    //if (itemBounds.Contains(rect)) {
                    //    listBoxItem.IsSelected = !listBoxItem.IsSelected;
                    //}
                    //else if (rect.IntersectsWith(itemBounds)) {
                    //    listBoxItem.IsSelected = true;
                    //}

                    if (rect.IntersectsWith(itemBounds)) {
                        listBoxItem.IsSelected = !listBoxItem.IsSelected;
                    }
                }
            }
            _DragStart = null;
        }

        private void Button_Click_EditPosIdx(object sender, RoutedEventArgs e) {
            var fovInfo = VisionRecipeManager.GetFovInfos().FirstOrDefault();
            var cameraDisplay = CameraDisplayManager.GetDisplay(fovInfo, eDisplayType.Machine_B);
            VisionCommonUI.ChildImageSettingWindow.Instance?.Show(fovInfo, cameraDisplay);
        }

        private void Button_Click_SelectAll(object sender, RoutedEventArgs e) {
            foreach (var item in ListBox.Items) {
                var listBoxItem = (ListBoxItem)ListBox.ItemContainerGenerator.ContainerFromItem(item);
                listBoxItem.IsSelected = true;
            }
        }

        private void Button_Click_DeSelectAll(object sender, RoutedEventArgs e) {
            foreach (var item in ListBox.Items) {
                var listBoxItem = (ListBoxItem)ListBox.ItemContainerGenerator.ContainerFromItem(item);
                listBoxItem.IsSelected = false;
            }
        }

        private void Button_Click_Invert(object sender, RoutedEventArgs e) {
            foreach (var item in ListBox.Items) {
                var listBoxItem = (ListBoxItem)ListBox.ItemContainerGenerator.ContainerFromItem(item);
                listBoxItem.IsSelected = !listBoxItem.IsSelected;
            }
        }

        private void Button_Click_Save(object sender, RoutedEventArgs e) {
            (this.DataContext as WDSelectScoutFieldViewModel).PerformCmdSave();
            if (VisionCommonUI.ChildImageSettingWindow.Instance.IsActive) {
                VisionCommonUI.ChildImageSettingWindow.Instance.Close();
            }
        }
    }
}