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

namespace XLIMS.PSV.ViewModels
{
    public class MainViewModel : ViewModelBase,IActivityViewModel
    {
        #region Constructor
        public MainViewModel(ILimsService limsService, IDialogService dialogService)
        {
            _limsService = limsService;
            _dialogService = dialogService;
             LoadSide();
            _limsService.Datas.SetChanged += Datas_SetChanged;
        }

        private void Datas_SetChanged()
        {
            
        }
        #endregion //Constructor

        #region Events
        #endregion //Events

        #region Fields
        private readonly ILimsService _limsService;
        private readonly IDialogService _dialogService;
        private SideItemViewModel _currentSideItem;
        private DocumentSet _currentPsv;
        private IGrouping<string,DataSet> _currentGroupPov;
        private DataSet _currentPov;
        #endregion //Fields
        
        #region Properties
        public ObservableCollection<SideItemViewModel> SideItems { get; set; } = new();
        public SideItemViewModel CurrentSideItem
        {
            get => _currentSideItem;
            set
            {
                _currentSideItem = value;
                if (_currentSideItem != null) { LoadPsvAsync(_currentSideItem.Index); }
                OnPropertyChanged();
            }
        }
        public ObservableCollection<DocumentSet> AllPsvs { get; set; } = new();
        public DocumentSet CurrentPsv
        {
            get => _currentPsv;
            set
            {
                _currentPsv = value;
                if (_currentPsv != null) { LoadDataAsync(_currentPsv); }
                OnPropertyChanged();
            }
        }
        public ObservableCollection<IGrouping<string,DataSet>> GroupedPovs { get; set; }
        public IGrouping<string, DataSet> CurrentGroupPov
        {
            get => _currentGroupPov;
            set { _currentGroupPov = value; OnPropertyChanged(); }
        }
        public DataSet CurrentPov
        {
            get => _currentPov;
            set { _currentPov = value; OnPropertyChanged(); }
        }
        public string Title => "ПСВ";
        public object View => new MainView();
       

        #endregion //Properties

        #region Methods
        public void LoadSide()
        {
            var side=new List<SideItemViewModel>();
            side.Add(new SideItemViewModel(1,"Срочные"));
            side.Add(new SideItemViewModel(2,"Открытые"));
            side.Add(new SideItemViewModel(3,"Архив"));
            SideItems = new ObservableCollection<SideItemViewModel>(side);
            OnPropertyChanged(nameof(SideItems));
        }
        public async Task LoadPsvAsync(int index)
        {
            try
            {
                var psvsTask = await _limsService.Documents.GetAllAsync();
                if (index == 1)
                {
                    AllPsvs = new ObservableCollection<DocumentSet>(psvsTask.Where(e => e.Name == "ПСВ" && (DateTime.Today - e.DocDate).Value.TotalDays > 15));
                }
                if (index == 2)
                {
                    AllPsvs = new ObservableCollection<DocumentSet>(psvsTask.Where(e => e.Name == "ПСВ"));
                }
                if (index == 3)
                {

                    AllPsvs = new ObservableCollection<DocumentSet>(psvsTask.Where(e => e.Name == "ПСВ" && e.Status == "close"));
                }
            }
            finally 
            {
                OnPropertyChanged(nameof(AllPsvs));
            }
        }
        public async Task LoadDataAsync(DocumentSet psv)
        {
            try
            {
                var povsTask = await Task.Run<IEnumerable<DataSet>>(()=>psv.DataSetDocuments.ToList());
                GroupedPovs = new ObservableCollection<IGrouping<string, DataSet>>(povsTask.GroupBy(e => e.Device.Dpzn + e.Device.Hrtc + e.Device.Gsrs));
            }
            finally
            {
                OnPropertyChanged(nameof(GroupedPovs));
            }
        }
        private void AddPsv()
        {
            _dialogService.ShowDialog(new PsvViewModel(_limsService, _dialogService));
        }
        private void EditPsv()
        {
            _dialogService.ShowDialog(new PsvViewModel(_limsService, _dialogService,CurrentPsv));
        }
        private async Task DelPsvAsync()
        {
            await _limsService.Documents.RemoveAsync(CurrentPsv);
            AllPsvs.Remove(CurrentPsv);
        }
        private void GoodPov() { }
        private void BadPov() 
        {
            _dialogService.ShowDialog(new BadViewModel(_limsService,CurrentPov));
        }
        #endregion //Methods

        #region Commands
        public ICommand AddPsvCommand => new RelayCommand(p => AddPsv());
        public ICommand EditPsvCommand => new RelayCommand(p => EditPsv(),p=>CurrentPsv!=null);
        public ICommand BadCommand => new RelayCommand(p => BadPov());
        public ICommand DelPsvCommand => new AsyncRelayCommand(DelPsvAsync,()=>CurrentPsv!=null);

        #endregion //Commands
    }
}