Jugenddienst-Stunden/Jugenddienst Stunden/ViewModels/NoteViewModel.cs

using CommunityToolkit.Mvvm.Input;
using CommunityToolkit.Mvvm.ComponentModel;
using System.Windows.Input;

namespace Jugenddienst_Stunden.ViewModels;

internal class NoteViewModel : ObservableObject, IQueryAttributable {
	private Models.Note _note;

	public string Text {
		get => _note.Text;
		set {
			if (_note.Text != value) {
				_note.Text = value;
				OnPropertyChanged();
			}
		}
	}

	public DateTime Date => _note.Date;

	public string Identifier => _note.Filename;

	public ICommand SaveCommand { get; private set; }
	public ICommand DeleteCommand { get; private set; }

	public NoteViewModel() {
		_note = new Models.Note();
		SaveCommand = new AsyncRelayCommand(Save);
		DeleteCommand = new AsyncRelayCommand(Delete);
	}

	public NoteViewModel(Models.Note note) {
		_note = note;
		SaveCommand = new AsyncRelayCommand(Save);
		DeleteCommand = new AsyncRelayCommand(Delete);
	}

	private async Task Save() {
		_note.Date = DateTime.Now;
		_note.Save();
		await Shell.Current.GoToAsync($"..?saved={_note.Filename}");
	}

	private async Task Delete() {
		_note.Delete();
		await Shell.Current.GoToAsync($"..?deleted={_note.Filename}");
	}

	void IQueryAttributable.ApplyQueryAttributes(IDictionary<string, object> query) {
		if (query.ContainsKey("load")) {
			_note = Models.Note.Load(query["load"].ToString());
			RefreshProperties();
		}
	}

	public void Reload() {
		_note = Models.Note.Load(_note.Filename);
		RefreshProperties();
	}

	private void RefreshProperties() {
		OnPropertyChanged(nameof(Text));
		OnPropertyChanged(nameof(Date));
	}
}