using System.Collections.ObjectModel;
using Seyounth.Hyosung.UI.Models;
using System.Windows.Media;
using CommunityToolkit.Mvvm.Messaging;
using Seyounth.Hyosung.Data.Models;
using Seyounth.Hyosung.Data.Services;
using Wpf.Ui.Controls;

namespace Seyounth.Hyosung.UI.ViewModels.Pages
{
    public partial class DataViewModel : ObservableObject, INavigationAware
    {
        public class SavePalletCompletedMessage;

        [ObservableProperty] private ObservableCollection<Variety> _varieties;

        [ObservableProperty] private ObservableCollection<Pallet> _pallets;

        [ObservableProperty] private ObservableCollection<Pallet> _honeyPallets = new();

        [ObservableProperty] private ObservableCollection<Pallet> _paperPallets = new();

        [ObservableProperty] private ObservableCollection<Pallet> _trays = new();

        private readonly IVarietyService _varietyService;
        private readonly IPalletService _palletService;

        public DataViewModel(IVarietyService varietyService, IPalletService palletService)
        {
            _varietyService = varietyService;
            _palletService = palletService;
        }

        public void OnNavigatedTo()
        {
            Pallets = new ObservableCollection<Pallet>(_palletService.GetPallets());
            HoneyPallets = new ObservableCollection<Pallet>(Pallets.Where(p => p.Type == PalletType.Honey));
            var papers = Pallets.Where(p => p.Type == PalletType.Paper).ToList();
            papers.Add(new Pallet());
            papers = papers.OrderBy(p => p.Length).ToList();
            PaperPallets = new ObservableCollection<Pallet>(papers);
            Trays = new ObservableCollection<Pallet>(Pallets.Where(p =>
                p.Type is PalletType.Plywood or PalletType.Wood));
            var varieties = _varietyService.GetAll().Select(v =>
            {
                // 匹配相同ID的托盘对象
                v.TopAndBottomPallet = HoneyPallets.FirstOrDefault(p => p.Id == v.TopAndBottomPallet.Id);
                v.MiddlePallet = HoneyPallets.FirstOrDefault(p => p.Id == v.MiddlePallet.Id);
                v.Tray = Trays.FirstOrDefault(p => p.Id == v.Tray.Id);
                v.PaperTray = v.PaperTray is null
                    ? PaperPallets.First()
                    : PaperPallets.FirstOrDefault(p =>
                        p.Id == v.PaperTray.Id);
                return v;
            });

            Varieties = new ObservableCollection<Variety>(varieties);
        }

        public void OnNavigatedFrom()
        {
        }

        [RelayCommand]
        private void AddVariety()
        {
            var variety = new Variety
            {
                /* 初始化默认值 */
            };
            Varieties.Add(variety);
        }

        [RelayCommand]
        private void OnDeleteVariety(object obj)
        {
            if (obj is Variety variety)
            {
                Varieties.Remove(variety);
                _varietyService.DeleteVarietyAsync(variety);
            }
            else
            {
                Console.Write("Object is not a variety");
            }
        }

        [RelayCommand]
        private async Task OnSaveVariety(object obj)
        {
            if (obj is Variety variety)
            {
                await _varietyService.AddVarietyAsync(variety);
                //Pallets = new ObservableCollection<Pallet>(_palletService.GetPallets());
            }

            WeakReferenceMessenger.Default.Send(new SavePalletCompletedMessage());
        }
    }
}