using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
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.Navigation;
using System.Windows.Shapes;

namespace Wpf_AiSportsMicrospace
{
    /// <summary>
    /// Home.xaml 的交互逻辑
    /// </summary>
    public partial class Home : Window
    { 
        // 所有图片
        public ObservableCollection<CoverImage> AllImages { get; set; } = new ObservableCollection<CoverImage>();
        public ObservableCollection<CoverImage> VisibleImages { get; set; } = new ObservableCollection<CoverImage>();

        private int selectedIndex = 0;

        public Home()
        {
            InitializeComponent();

            // 示例图片路径
            string projectRoot = System.IO.Path.Combine(AppContext.BaseDirectory, @"..\..\..");
            string albumPath = System.IO.Path.Combine(projectRoot, "Resources", "Img", "Album"); 
            
            string badgePath = System.IO.Path.Combine(projectRoot, "Resources", "Img", "Badge");

            AllImages.Add(new CoverImage(System.IO.Path.Combine(albumPath, "1.jpg"), System.IO.Path.Combine(badgePath, "1.jpg")));
            AllImages.Add(new CoverImage(System.IO.Path.Combine(albumPath, "2.jpg"), System.IO.Path.Combine(badgePath, "2.jpg")));
            AllImages.Add(new CoverImage(System.IO.Path.Combine(albumPath, "3.jpg"), System.IO.Path.Combine(badgePath, "3.jpg")));
            AllImages.Add(new CoverImage(System.IO.Path.Combine(albumPath, "4.jpg"), System.IO.Path.Combine(badgePath, "4.jpg")));
            AllImages.Add(new CoverImage(System.IO.Path.Combine(albumPath, "5.jpg"), System.IO.Path.Combine(badgePath, "5.jpg")));

            VisibleImagesControl.ItemsSource = VisibleImages;

            // 默认选中中间图片
            selectedIndex = 2;
            UpdateVisibleImages();
        }
        private void Image_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (sender is Border border && border.DataContext is CoverImage img)
            {
                int index = AllImages.IndexOf(img);
                if (index >= 0)
                {
                    selectedIndex = index;
                    UpdateVisibleImages();
                }
            }
        }

        private void UpdateVisibleImages()
        {
            VisibleImages.Clear();
            for (int offset = -1; offset <= 1; offset++)
            {
                int idx = selectedIndex + offset;
                if (idx >= 0 && idx < AllImages.Count)
                {
                    var img = AllImages[idx];
                    img.IsSelected = offset == 0;
                    VisibleImages.Add(img);
                }
            }
        }
    }

    public class CoverImage : INotifyPropertyChanged
    {
        public string Path { get; set; }      // 主图路径
        public string BadgePath { get; set; } // 小徽章路径

        private bool _isSelected;
        public bool IsSelected
        {
            get => _isSelected;
            set { _isSelected = value; OnPropertyChanged(nameof(IsSelected)); }
        }

        public CoverImage(string path, string badgePath = null)
        {
            Path = path;
            BadgePath = badgePath;
        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string name) =>
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
    }
}