using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
using System.Windows.Input;
using XLIMS.CONTRACT;
using XLIMS.DATA.Models;
using XLIMS.MVVM.Base;
using XLIMS.TPRZ.Views;

namespace XLIMS.TPRZ.ViewModels
{
    public class MainViewModel : ViewModelBase,IActivityViewModel
    {
        #region Constructor
        public MainViewModel(ILimsService limsService, IDialogService dialogService)
        {
            _limsService = limsService;
            _dialogService = dialogService;
            _limsService.Spois.SetChanged += OnSpoisChanged;
            _limsService.Tips.SetChanged += OnTipsChanged;
            _limsService.Tprzs.SetChanged += OnTprzsChanged;
            LoadSpoiAsync();
        }
        #endregion //Constructor

        #region Events
        private async void OnSpoisChanged()
        {
            await LoadSpoiAsync();
        }
        private async void OnTipsChanged()
        {
            await LoadTipAsync();
        }
        private async void OnTprzsChanged()
        {
            await LoadTprzAsync();
        }
        #endregion //Events

        #region Fields
        private readonly IDialogService _dialogService;
        private readonly ILimsService _limsService;
        private bool _isLoading;
        private TipViewModel _currentTip;
        private TprzViewModel _currentTprz;
        private Spoi _currentSpoi;
        #endregion //Fields

        #region Properties
        public string Title => "ТПРМ";

        public object View => new MainView();
        public ObservableCollection<Spoi> AllSpois { get; set; } = new();
        public ObservableCollection<TipViewModel> AllTips { get; set; } = new();
        public ObservableCollection<TprzViewModel> AllTprzs { get; set; } = new();
        public Spoi CurrentSpoi
        {
            get => _currentSpoi;
            set 
            {
                _currentSpoi = value;
                if (_currentSpoi != null) LoadTipAsync();
                OnPropertyChanged(); 
            }
        }
        public TipViewModel CurrentTip
        {
            get => _currentTip;
            set 
            {
                _currentTip = value;
                if (_currentTip != null) LoadTprzAsync();
                OnPropertyChanged(); 
            }
        }
        public TprzViewModel CurrentTprz
        {
            get => _currentTprz;
            set { _currentTprz = value; OnPropertyChanged(); }
        }
        public bool IsLoading
        {
            get => _isLoading;
            set { _isLoading = value; OnPropertyChanged(); }
        }
        #endregion //Properties

        #region Methods
        public async Task LoadSpoiAsync()
        {
            IsLoading = true;

            try
            {
                // Параллельная загрузка данных из разных доменов через подсервисы
                var spoisTask = await _limsService.Spois.GetAllAsync();

                AllSpois = new ObservableCollection<Spoi>(spoisTask);
                OnPropertyChanged(nameof(AllSpois));
            }
            finally
            {
                IsLoading = false;
            }
        }
        public async Task LoadTipAsync()
        {
            IsLoading = true;

            try
            {
                // Параллельная загрузка данных из разных доменов через подсервисы
                var tipsTask = await _limsService.Tips.GetAllAsync();

                AllTips = new ObservableCollection<TipViewModel>(tipsTask.Where(e=>e.Idspoi==CurrentSpoi.Id).Select(s=>new TipViewModel(_limsService,null,s)));
                OnPropertyChanged(nameof(AllTips));
            }
            finally
            {
                IsLoading = false;
            }
        }
        public async Task LoadTprzAsync()
        {
            IsLoading = true;

            try
            {
                // Параллельная загрузка данных из разных доменов через подсервисы
                var tprzsTask = await _limsService.Tprzs.GetAllAsync();

                AllTprzs = new ObservableCollection<TprzViewModel>(tprzsTask.Where(e=>e.Idtip==CurrentTip.Id).Select(s => new TprzViewModel(_limsService,0,s)));
                OnPropertyChanged(nameof(AllTprzs));
            }
            finally
            {
                IsLoading = false;
            }
        }
        private void AddTip()
        {
            _dialogService.ShowDialog(new TipViewModel(_limsService,CurrentSpoi));
        }
        private void EditTip()
        {
            _dialogService.ShowDialog(CurrentTip);
        }
        private async Task DelTipAsync()
        {
            await CurrentTip.Remove();
            AllTips.Remove(CurrentTip);
            OnPropertyChanged(nameof(AllTips));
        }
        private void AddTprz()
        {
            _dialogService.ShowDialog(new TprzViewModel(_limsService,CurrentTip.Id));
        }
        private void EditTprz()
        {
            _dialogService.ShowDialog(CurrentTprz);
        }
        private async Task DelTprzAsync()
        {
            await CurrentTprz.Remove();
            AllTprzs.Remove(CurrentTprz);
            OnPropertyChanged(nameof(AllTprzs));
        }
        #endregion //Methods

        #region Commands
        public ICommand AddTipCommand => new RelayCommand(p => AddTip(),p=>CurrentSpoi!=null);
        public ICommand EditTipCommand => new RelayCommand(p => EditTip(), p => CurrentTip != null);
        public ICommand DelTipCommand => new AsyncRelayCommand(DelTipAsync, () => CurrentTip != null);
        public ICommand AddTprzCommand => new RelayCommand(p => AddTprz(),p=>CurrentTip!=null);
        public ICommand EditTprzCommand => new RelayCommand(p => EditTprz(), p => CurrentTprz != null);
        public ICommand DelTprzCommand => new AsyncRelayCommand(DelTprzAsync, () => CurrentTprz != null);

        
        #endregion //Commands
    }
}