Add migration to properly set playlist owner

Emby.Server.Implementations/Playlists/PlaylistManager.cs

@@ -563,5 +563,19 @@ namespace Emby.Server.Implementations.Playlists
                 }
             }
         }
+
+        public async Task UpdatePlaylist(Playlist playlist)
+        {
+            var currentPlaylist = (Playlist)_libraryManager.GetItemById(playlist.Id);
+            currentPlaylist.OwnerUserId = playlist.OwnerUserId;
+            currentPlaylist.Shares = playlist.Shares;
+
+            await playlist.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
+
+            if (playlist.IsFile)
+            {
+                SavePlaylistFile(currentPlaylist);
+            }
+        }
     }
 }

Jellyfin.Server/Migrations/MigrationRunner.cs

@@ -40,7 +40,8 @@ namespace Jellyfin.Server.Migrations
             typeof(Routines.ReaddDefaultPluginRepository),
             typeof(Routines.MigrateDisplayPreferencesDb),
             typeof(Routines.RemoveDownloadImagesInAdvance),
-            typeof(Routines.MigrateAuthenticationDb)
+            typeof(Routines.MigrateAuthenticationDb),
+            typeof(Routines.FixPlaylistOwner)
         };
 
         /// <summary>

Jellyfin.Server/Migrations/Routines/FixPlaylistOwner.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Linq;
+
+using Jellyfin.Data.Enums;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Playlists;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Server.Migrations.Routines;
+
+/// <summary>
+/// Properly set playlist owner.
+/// </summary>
+internal class FixPlaylistOwner : IMigrationRoutine
+{
+    private readonly ILogger<RemoveDuplicateExtras> _logger;
+    private readonly ILibraryManager _libraryManager;
+    private readonly IPlaylistManager _playlistManager;
+
+    public FixPlaylistOwner(
+        ILogger<RemoveDuplicateExtras> logger,
+        ILibraryManager libraryManager,
+        IPlaylistManager playlistManager)
+    {
+        _logger = logger;
+        _libraryManager = libraryManager;
+        _playlistManager = playlistManager;
+    }
+
+    /// <inheritdoc/>
+    public Guid Id => Guid.Parse("{615DFA9E-2497-4DBB-A472-61938B752C5B}");
+
+    /// <inheritdoc/>
+    public string Name => "FixPlaylistOwner";
+
+    /// <inheritdoc/>
+    public bool PerformOnNewInstall => false;
+
+    /// <inheritdoc/>
+    public void Perform()
+    {
+        var playlists = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            IncludeItemTypes = new[] { BaseItemKind.Playlist }
+        })
+        .Cast<Playlist>()
+        .Where(x => x.OwnerUserId.Equals(Guid.Empty))
+        .ToArray();
+
+        if (playlists.Length > 0)
+        {
+            foreach (var playlist in playlists)
+            {
+                var shares = playlist.Shares;
+                var firstEditShare = shares.First(x => x.CanEdit);
+                if (firstEditShare is not null && Guid.TryParse(firstEditShare.UserId, out var guid))
+                {
+                    playlist.OwnerUserId = guid;
+                    playlist.Shares = shares.Where(x => x != firstEditShare).ToArray();
+
+                    _playlistManager.UpdatePlaylist(playlist).GetAwaiter().GetResult();
+                }
+            }
+        }
+    }
+}

MediaBrowser.Controller/Playlists/IPlaylistManager.cs

@@ -64,5 +64,12 @@ namespace MediaBrowser.Controller.Playlists
         /// <param name="userId">The user id.</param>
         /// <returns>Task.</returns>
         Task RemovePlaylists(Guid userId);
+
+        /// <summary>
+        /// Updates a playlist.
+        /// </summary>
+        /// <param name="playlist">The updated playlist.</param>
+        /// <returns>Task.</returns>
+        Task UpdatePlaylist(Playlist playlist);
     }
 }