using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Threading.Tasks;
using System.Windows;
using TeamAAS.Camera;
using TeamAAS.Camera.Models;
using TeamAAS.Dialogs;

namespace TeamAAS.Views
{
    public partial class SearchDeviceWindow 
    {
        public List<CameraInfo> SelectedDevices { get; private set; } = new List<CameraInfo>();
        private ObservableCollection<CameraInfo> _results = new ObservableCollection<CameraInfo>();
        private List<BrandOption> _brands;

        public SearchDeviceWindow()
        {
            InitializeComponent();
            UiScaler.Attach(this); // 分辨率/DPI 自适应
            ResultListBox.ItemsSource = _results;

            try
            {
                _brands = new List<BrandOption>();
                var rawBrands = CameraManager.Instance.GetAvailableBrands();
                foreach (var (Brand, DisplayName, Installed) in rawBrands)
                {
                    _brands.Add(new BrandOption { Brand = Brand, DisplayName = DisplayName, Installed = Installed });
                }
                BrandComboBox.ItemsSource = _brands;

                foreach (var b in _brands)
                {
                    if (b.Installed)
                    {
                        BrandComboBox.SelectedValue = b.Brand;
                        break;
                    }
                }
            }
            catch (Exception ex)
            {
                StatusText.Text = $"加载品牌列表失败: {ex.Message}";
            }
        }

        private async void Search_Click(object sender, RoutedEventArgs e)
        {
            if (BrandComboBox.SelectedValue == null)
            {
                StatusText.Text = "请先选择相机品牌";
                return;
            }

            var brand = (string)BrandComboBox.SelectedValue;
            var brandInfo = _brands.Find(b => b.Brand == brand);

            if (!brandInfo.Installed)
            {
                StatusText.Text = $"⚠ {brandInfo.DisplayName} SDK 未安装，无法搜索";
                return;
            }

            LoadingIndicator.Visibility = Visibility.Visible;
            StatusText.Text = $"正在搜索 {brandInfo.DisplayName} 设备...";
            _results.Clear();
            AddButton.IsEnabled = false;

            try
            {
                var devices = await Task.Run(() => CameraManager.Instance.DiscoverByBrand(brand));

                foreach (var d in devices)
                {
                    _results.Add(d);
                }

                StatusText.Text = $"搜索完成，找到 {devices.Count} 个设备";
            }
            catch (Exception ex)
            {
                StatusText.Text = $"搜索失败: {ex.Message}";
            }
            finally
            {
                LoadingIndicator.Visibility = Visibility.Collapsed;
            }
        }

        private void Result_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            AddButton.IsEnabled = ResultListBox.SelectedItem != null;
        }

        private void Add_Click(object sender, RoutedEventArgs e)
        {
            var selected = ResultListBox.SelectedItem as CameraInfo;
            if (selected == null) return;

            var info = selected.Copy();
            info.Id = Guid.NewGuid();

            if (string.IsNullOrEmpty(info.CameraName))
            {
                info.CameraName = $"{CameraManager.Instance.GetBrandDisplayName(info.CameraBrand)}-{info.SerialNumber}";
            }

            SelectedDevices.Add(info);
            _results.Remove(selected);
            this.Close();
        }

        private void Close_Click(object sender, RoutedEventArgs e)
        {
            Close();
        }

        private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            DialogResult = SelectedDevices.Count > 0;
        }
    }

    public class BrandOption
    {
        public string Brand { get; set; }
        public string DisplayName { get; set; }
        public bool Installed { get; set; }
    }
}