Added playlists view. Added messaging service. Added logic for adding and deleting playlists.

Harmonia.WinUI/ViewModels/PlaylistDetailViewModel.cs

@@ -7,6 +7,7 @@ using Harmonia.Core.Player;
 using Harmonia.Core.Playlists;
 using Harmonia.Core.Scanner;
 using Harmonia.WinUI.Caching;
+using Harmonia.WinUI.Messaging;
 using Harmonia.WinUI.Storage;
 using Microsoft.UI.Xaml.Media.Imaging;
 using System;
@@ -36,6 +37,7 @@ public partial class PlaylistDetailViewModel : ViewModelBase
     private readonly IAudioFileScanner _audioFileScanner;
     private readonly IAudioEngine _audioEngine;
     private readonly IStorageProvider _storageProvider;
+    private readonly IMessageService _messageService;
     private readonly DispatcherQueue _dispatcherQueue;
     private readonly ConcurrentDictionary<int, CancellationTokenSource> _imageCancellationTokens = [];
 
@@ -100,6 +102,7 @@ public partial class PlaylistDetailViewModel : ViewModelBase
     }
 
     public ICommand PlaySongCommand => new AsyncRelayCommand(PlaySongAsync, AreSongsSelected);
+    public ICommand NewPlaylistCommand => new AsyncRelayCommand(NewPlaylistAsync);
     public ICommand AddFilesCommand => new AsyncRelayCommand(AddFilesAsync);
     public ICommand AddFolderCommand => new AsyncRelayCommand(AddFolderAsync);
     public ICommand RemoveSongsCommand => new RelayCommand(RemoveSongs, AreSongsSelected);
@@ -110,6 +113,7 @@ public partial class PlaylistDetailViewModel : ViewModelBase
     public ICommand RefreshTagsCommand => new RelayCommand(RefreshTags);
     public ICommand RemoveMissingSongsCommand => new RelayCommand(RemoveMissingSongs);
     public ICommand RemoveDuplicateSongsCommand => new RelayCommand(RemoveDuplicateSongs);
+    public ICommand DeletePlaylistCommand => new AsyncRelayCommand(DeletePlaylistAsync);
 
     public bool IsUserUpdating { get; set; }
     private bool _isUserInitiatingSongChange;
@@ -125,10 +129,11 @@ public partial class PlaylistDetailViewModel : ViewModelBase
         IAudioFileScanner audioFileScanner,
         IAudioEngine audioEngine,
         IStorageProvider storageProvider,
-        IPlaylistManager playlistManager)
+        IPlaylistManager playlistManager,
+        IMessageService messageService)
     {
         _playlistManager = playlistManager;
-        //_playlistManager.CurrentPlaylistChanged += OnPlaylistChanged;
+        _playlistManager.CurrentPlaylistChanged += OnPlaylistChanged;
 
         _audioPlayer = audioPlayer;
         _audioPlayer.PlaylistChanged += OnPlaylistChanged;
@@ -139,6 +144,7 @@ public partial class PlaylistDetailViewModel : ViewModelBase
         _audioFileScanner = audioFileScanner;
         _audioEngine = audioEngine;
         _storageProvider = storageProvider;
+        _messageService = messageService;
         _dispatcherQueue = DispatcherQueue.GetForCurrentThread();
 
         FilteredPlaylistSongs.CollectionChanged += OnFilteredPlaylistSongsCollectionChanged;
@@ -185,7 +191,8 @@ public partial class PlaylistDetailViewModel : ViewModelBase
     private void OnPlaylistChanged(object? sender, EventArgs e)
     {
         Playlist?.PlaylistUpdated -= OnPlaylistUpdated;
-        Playlist = _audioPlayer.Playlist;
+        //Playlist = _audioPlayer.Playlist;
+        Playlist = _playlistManager.CurrentPlaylist;
         Playlist?.PlaylistUpdated += OnPlaylistUpdated;
 
         UpdateFilteredSongs();
@@ -369,6 +376,12 @@ public partial class PlaylistDetailViewModel : ViewModelBase
         return SelectedPlaylistSongs.Count > 0;
     }
 
+    private async Task NewPlaylistAsync(CancellationToken cancellationToken)
+    {
+        Playlist playlist = await _playlistManager.AddPlaylistAsync();
+        _playlistManager.CurrentPlaylist = playlist;
+    }
+
     private async Task AddFilesAsync(CancellationToken cancellationToken)
     {
         if (Playlist == null)
@@ -535,5 +548,30 @@ public partial class PlaylistDetailViewModel : ViewModelBase
         Playlist?.RemoveDuplicateSongs();
     }
 
+    private async Task DeletePlaylistAsync()
+    {
+        if (Playlist == null)
+            return;
+
+        bool confirmed = await _messageService.ConfirmAsync($"Delete Playlist - {Playlist.Name}", "Are you sure you want to delete this playlist?");
+
+        if (!confirmed)
+            return;
+
+        _playlistManager.RemovePlaylist(Playlist);
+
+        if (_playlistManager.CurrentPlaylist == Playlist)
+        {
+            if (_playlistManager.Playlists.Count > 0)
+            {
+                _playlistManager.CurrentPlaylist = _playlistManager.Playlists.ElementAt(0);
+            }
+            else
+            {
+                _playlistManager.CurrentPlaylist = null;
+            }
+        }
+    }
+
     #endregion
 }