using CommunityToolkit.Mvvm.ComponentModel;
using CommunityToolkit.Mvvm.Input;
using System.Windows.Input;
using Microsoft.Maui.Controls;
using Microsoft.Maui.Networking;
using ZXing.Net.Maui;
using System.Collections.ObjectModel;
using System.ComponentModel;
using Jugenddienst_Stunden.Types;
using System.Globalization;


namespace Jugenddienst_Stunden.ViewModels {
	internal class StundenViewModel : ObservableObject, IQueryAttributable {
		public string Name => AppInfo.Name;
		public string Surname => AppInfo.VersionString;
		public string MoreInfoUrl => "https://aka.ms/maui";
		public string Message => "Hier werden deine geleisteten Arbeitsstunden aufgelistet";
		public string LoadOverview => "Lade Summen für " + DateTime.Today.ToString("MMMM");
		public static DateTime GetDay = DateTime.Today;
		public string ShowDay => "Zeit an Tag " + GetDay.ToString("ddd d. MMM") + ": ";

		public int id { get; set; }
		public ICommand NewEntryCommand { get; }
		public ICommand SelectEntryCommand { get; }

		public ICommand LoadDataCommand { get; private set; }

		public event EventHandler<string> AlertEvent;
		public event EventHandler<string> InfoEvent;


		public object Stunden { get; }


		private List<DayTime> _stunde;
		public List<DayTime> Stunde {
			get => _stunde;
		}
		private Hours _hour;
		public Hours Hours {
			get => _hour;
		}
		public string ZeitDone {
			get => _hour.zeit;
		}
		public string ZeitCalculated {
			get => _hour.zeit_total;
		}
		public string Nominal {
			get => _hour.nominal;
		}
		public string Overtime {
			get => _hour.overtime;
		}
		public string OvertimeMonth {
			get => _hour.overtime_month;
		}
		public string Holiday {
			get => _hour.holiday;
		}

		public TimeOnly DayTotal { get; set; }

		public List<DayTime> DayTimes {
			get => _hour.daytime;
			set {
				if (_hour.daytime != value) {
					_hour.daytime = value;
					OnPropertyChanged();
				}
			}
		}

		public DateTime MinimumDate {
			//get => _hour.MinDate;
			//get => DateTime.Today.AddDays(-21);
			get => DateTime.Today.AddDays(-365);
		}

		public DateTime MaximumDate {
			//get => _hour.MaxDate;
			get => DateTime.Today.AddDays(60);
		}

		private DateTime dateToday = DateTime.Today;
		public DateTime DateToday {
			get => dateToday;
			set {
				if (dateToday != value) {
					dateToday = value;
					GetDay = value;
					OnPropertyChanged();
					_ = LoadDay(value); // Use discard operator to explicitly ignore the returned Task  
										//RefreshProperties();
					OnPropertyChanged(nameof(TimeDay));
					OnPropertyChanged(nameof(ShowDay));
					OnPropertyChanged(nameof(DayTimes));
				}
			}
		}

		public DateTime Date {
			get => _hour.Date;
		}


		public List<TimeDay> ZeitTotalDaily {
			get => _hour.zeit_total_daily_api;
		}

		public string Title { get; set; } = Preferences.Default.Get("name", "") + " " + Preferences.Default.Get("surname", "");


		public List<TimeDay> TimeDay { get; set; }




		public StundenViewModel() {

			_hour = new Types.Hours();
			LoadDataCommand = new AsyncRelayCommand(LoadData);

			NewEntryCommand = new AsyncRelayCommand(NewEntryAsync);
			SelectEntryCommand = new AsyncRelayCommand<DayTime>(SelectEntryAsync);

			_ = LoadDay(DateTime.Today);
			OnPropertyChanged(nameof(DayTimes));
		}

		private async Task NewEntryAsync() {
			//Hier muss das Datum übergeben werden
			//await Shell.Current.GoToAsync(nameof(Views.StundePage));
			await Shell.Current.GoToAsync($"{nameof(Views.StundePage)}?date={dateToday.ToString("yyyy-MM-dd")}");
		}

		private async Task SelectEntryAsync(DayTime entry) {
			if (entry != null && entry.id != null)
				await Shell.Current.GoToAsync($"{nameof(Views.StundePage)}?load={entry.id}");
			else AlertEvent?.Invoke(this, "Auswahl enthält keine Daten");
		}


		private async Task LoadData() {
			try {
				_hour = await Models.Stunde.LoadData();
				RefreshProperties();
			} catch (Exception e) {
				AlertEvent?.Invoke(this, e.Message);
			}
		}

		public async Task LoadDay(DateTime date) {
			try {
				_hour.daytime = await Models.Stunde.LoadDay(date);
				////if (_hour.zeit_total_daily_api != null) {
				////TimeDay = _hour.zeit_total_daily_api.Where(static p => p.Day == GetDay.Day).ToList() ?? new List<TimeDay> { new TimeDay { Day = GetDay.Day, Hours = 0 } };
				//RefreshProperties();

				
				TimeSpan span = TimeSpan.Zero;
				foreach (DayTime dt in _hour.daytime) {
					span += dt.end - dt.begin;
				}
				DayTotal = TimeOnly.FromTimeSpan(span);
				OnPropertyChanged(nameof(ShowDay));
				OnPropertyChanged(nameof(TimeDay));
				OnPropertyChanged(nameof(DayTotal));
				OnPropertyChanged(nameof(DayTimes));
				////}
			} catch (Exception e) {
				DayTimes = new List<DayTime>();
				InfoEvent?.Invoke(this, e.Message);
			}
		}

		async void IQueryAttributable.ApplyQueryAttributes(IDictionary<string, object> query) {
			if (query.ContainsKey("date")) {
				await LoadDay(Convert.ToDateTime(query["date"]));
			}
		}

		private void RefreshProperties() {
			OnPropertyChanged(nameof(Nominal));
			OnPropertyChanged(nameof(Overtime));
			OnPropertyChanged(nameof(OvertimeMonth));
			OnPropertyChanged(nameof(ZeitCalculated));
			OnPropertyChanged(nameof(ZeitDone));
			OnPropertyChanged(nameof(Holiday));
			OnPropertyChanged(nameof(Hours));
			OnPropertyChanged(nameof(Title));
			OnPropertyChanged(nameof(ZeitTotalDaily));
			OnPropertyChanged(nameof(TimeDay));
			OnPropertyChanged(nameof(MinimumDate));
			OnPropertyChanged(nameof(MaximumDate));
			OnPropertyChanged(nameof(ShowDay));
			//OnPropertyChanged(nameof(DateToday));
		}


	}
}