Merge branch 'master' into livetv-guidemanager

# Conflicts:
#	src/Jellyfin.LiveTv/LiveTvManager.cs

21 files changed, 94 insertions, 77 deletions

diff --git a/Jellyfin.Api/Controllers/ArtistsController.cs b/Jellyfin.Api/Controllers/ArtistsController.cs
index e7d3e694a..8b931f162 100644
--- a/Jellyfin.Api/Controllers/ArtistsController.cs
+++ b/Jellyfin.Api/Controllers/ArtistsController.cs
@@ -6,6 +6,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -126,7 +127,7 @@ public class ArtistsController : BaseJellyfinApiController
         User? user = null;
         BaseItem parentItem = _libraryManager.GetParentItem(parentId, userId);
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             user = _userManager.GetUserById(userId.Value);
         }
@@ -330,7 +331,7 @@ public class ArtistsController : BaseJellyfinApiController
         User? user = null;
         BaseItem parentItem = _libraryManager.GetParentItem(parentId, userId);
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             user = _userManager.GetUserById(userId.Value);
         }
@@ -469,7 +470,7 @@ public class ArtistsController : BaseJellyfinApiController
 
         var item = _libraryManager.GetArtist(name, dtoOptions);
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             var user = _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/ChannelsController.cs b/Jellyfin.Api/Controllers/ChannelsController.cs
index fdc16ee23..f83c71b57 100644
--- a/Jellyfin.Api/Controllers/ChannelsController.cs
+++ b/Jellyfin.Api/Controllers/ChannelsController.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Channels;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
@@ -126,7 +127,7 @@ public class ChannelsController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -201,7 +202,7 @@ public class ChannelsController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] Guid[] channelIds)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/FilterController.cs b/Jellyfin.Api/Controllers/FilterController.cs
index baeb8b81a..d6e043e6a 100644
--- a/Jellyfin.Api/Controllers/FilterController.cs
+++ b/Jellyfin.Api/Controllers/FilterController.cs
@@ -3,6 +3,7 @@ using System.Linq;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -53,7 +54,7 @@ public class FilterController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] MediaType[] mediaTypes)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -146,7 +147,7 @@ public class FilterController : BaseJellyfinApiController
         [FromQuery] bool? recursive)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/GenresController.cs b/Jellyfin.Api/Controllers/GenresController.cs
index 6cb1993e4..54d48aec2 100644
--- a/Jellyfin.Api/Controllers/GenresController.cs
+++ b/Jellyfin.Api/Controllers/GenresController.cs
@@ -6,6 +6,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -95,7 +96,7 @@ public class GenresController : BaseJellyfinApiController
             .AddClientFields(User)
             .AddAdditionalDtoOptions(enableImages, false, imageTypeLimit, enableImageTypes);
 
-        User? user = userId.Value.Equals(default)
+        User? user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -172,7 +173,7 @@ public class GenresController : BaseJellyfinApiController
 
         item ??= new Genre();
 
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/InstantMixController.cs b/Jellyfin.Api/Controllers/InstantMixController.cs
index 4dc2a4253..e7ff1f986 100644
--- a/Jellyfin.Api/Controllers/InstantMixController.cs
+++ b/Jellyfin.Api/Controllers/InstantMixController.cs
@@ -5,6 +5,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -76,7 +77,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var item = _libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -113,7 +114,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var album = _libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -150,7 +151,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var playlist = (Playlist)_libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -186,7 +187,7 @@ public class InstantMixController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -223,7 +224,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var item = _libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -260,7 +261,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var item = _libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
@@ -334,7 +335,7 @@ public class InstantMixController : BaseJellyfinApiController
     {
         var item = _libraryManager.GetItemById(id);
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
diff --git a/Jellyfin.Api/Controllers/ItemsController.cs b/Jellyfin.Api/Controllers/ItemsController.cs
index a1fc8e11b..d10fba920 100644
--- a/Jellyfin.Api/Controllers/ItemsController.cs
+++ b/Jellyfin.Api/Controllers/ItemsController.cs
@@ -5,6 +5,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
@@ -245,7 +246,7 @@ public class ItemsController : BaseJellyfinApiController
         var isApiKey = User.GetIsApiKey();
         // if api key is used (auth.IsApiKey == true), then `user` will be null throughout this method
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = !isApiKey && !userId.Value.Equals(default)
+        var user = !isApiKey && !userId.IsNullOrEmpty()
             ? _userManager.GetUserById(userId.Value) ?? throw new ResourceNotFoundException()
             : null;
 
@@ -840,7 +841,7 @@ public class ItemsController : BaseJellyfinApiController
         var ancestorIds = Array.Empty<Guid>();
 
         var excludeFolderIds = user.GetPreferenceValues<Guid>(PreferenceKind.LatestItemExcludes);
-        if (parentIdGuid.Equals(default) && excludeFolderIds.Length > 0)
+        if (parentIdGuid.IsEmpty() && excludeFolderIds.Length > 0)
         {
             ancestorIds = _libraryManager.GetUserRootFolder().GetChildren(user, true)
                 .Where(i => i is Folder)
diff --git a/Jellyfin.Api/Controllers/LibraryController.cs b/Jellyfin.Api/Controllers/LibraryController.cs
index de057bbab..a0bbc961f 100644
--- a/Jellyfin.Api/Controllers/LibraryController.cs
+++ b/Jellyfin.Api/Controllers/LibraryController.cs
@@ -146,12 +146,12 @@ public class LibraryController : BaseJellyfinApiController
         [FromQuery] bool inheritFromParent = false)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
-        var item = itemId.Equals(default)
-            ? (userId.Value.Equals(default)
+        var item = itemId.IsEmpty()
+            ? (userId.IsNullOrEmpty()
                 ? _libraryManager.RootFolder
                 : _libraryManager.GetUserRootFolder())
             : _libraryManager.GetItemById(itemId);
@@ -213,12 +213,12 @@ public class LibraryController : BaseJellyfinApiController
         [FromQuery] bool inheritFromParent = false)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
-        var item = itemId.Equals(default)
-            ? (userId.Value.Equals(default)
+        var item = itemId.IsEmpty()
+            ? (userId.IsNullOrEmpty()
                 ? _libraryManager.RootFolder
                 : _libraryManager.GetUserRootFolder())
             : _libraryManager.GetItemById(itemId);
@@ -339,7 +339,7 @@ public class LibraryController : BaseJellyfinApiController
     {
         var isApiKey = User.GetIsApiKey();
         var userId = User.GetUserId();
-        var user = !isApiKey && !userId.Equals(default)
+        var user = !isApiKey && !userId.IsEmpty()
             ? _userManager.GetUserById(userId) ?? throw new ResourceNotFoundException()
             : null;
         if (!isApiKey && user is null)
@@ -382,7 +382,7 @@ public class LibraryController : BaseJellyfinApiController
     {
         var isApiKey = User.GetIsApiKey();
         var userId = User.GetUserId();
-        var user = !isApiKey && !userId.Equals(default)
+        var user = !isApiKey && !userId.IsEmpty()
             ? _userManager.GetUserById(userId) ?? throw new ResourceNotFoundException()
             : null;
 
@@ -428,7 +428,7 @@ public class LibraryController : BaseJellyfinApiController
         [FromQuery] bool? isFavorite)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -471,7 +471,7 @@ public class LibraryController : BaseJellyfinApiController
 
         var baseItemDtos = new List<BaseItemDto>();
 
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -702,8 +702,8 @@ public class LibraryController : BaseJellyfinApiController
         [FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var item = itemId.Equals(default)
-            ? (userId.Value.Equals(default)
+        var item = itemId.IsEmpty()
+            ? (userId.IsNullOrEmpty()
                 ? _libraryManager.RootFolder
                 : _libraryManager.GetUserRootFolder())
             : _libraryManager.GetItemById(itemId);
@@ -718,7 +718,7 @@ public class LibraryController : BaseJellyfinApiController
             return new QueryResult<BaseItemDto>();
         }
 
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
diff --git a/Jellyfin.Api/Controllers/LiveTvController.cs b/Jellyfin.Api/Controllers/LiveTvController.cs
index 35cb97047..da68c72c9 100644
--- a/Jellyfin.Api/Controllers/LiveTvController.cs
+++ b/Jellyfin.Api/Controllers/LiveTvController.cs
@@ -15,6 +15,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.LiveTvDtos;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Net;
@@ -186,7 +187,7 @@ public class LiveTvController : BaseJellyfinApiController
             dtoOptions,
             CancellationToken.None);
 
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -218,10 +219,10 @@ public class LiveTvController : BaseJellyfinApiController
     public ActionResult<BaseItemDto> GetChannel([FromRoute, Required] Guid channelId, [FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
-        var item = channelId.Equals(default)
+        var item = channelId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(channelId);
 
@@ -391,7 +392,7 @@ public class LiveTvController : BaseJellyfinApiController
     public async Task<ActionResult<QueryResult<BaseItemDto>>> GetRecordingFolders([FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var folders = await _liveTvManager.GetRecordingFoldersAsync(user).ConfigureAwait(false);
@@ -414,10 +415,10 @@ public class LiveTvController : BaseJellyfinApiController
     public ActionResult<BaseItemDto> GetRecording([FromRoute, Required] Guid recordingId, [FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
-        var item = recordingId.Equals(default) ? _libraryManager.GetUserRootFolder() : _libraryManager.GetItemById(recordingId);
+        var item = recordingId.IsEmpty() ? _libraryManager.GetUserRootFolder() : _libraryManager.GetItemById(recordingId);
 
         var dtoOptions = new DtoOptions()
             .AddClientFields(User);
@@ -571,7 +572,7 @@ public class LiveTvController : BaseJellyfinApiController
         [FromQuery] bool enableTotalRecordCount = true)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -598,7 +599,7 @@ public class LiveTvController : BaseJellyfinApiController
             GenreIds = genreIds
         };
 
-        if (librarySeriesId.HasValue && !librarySeriesId.Equals(default))
+        if (!librarySeriesId.IsNullOrEmpty())
         {
             query.IsSeries = true;
 
@@ -627,7 +628,7 @@ public class LiveTvController : BaseJellyfinApiController
     [Authorize(Policy = Policies.LiveTvAccess)]
     public async Task<ActionResult<QueryResult<BaseItemDto>>> GetPrograms([FromBody] GetProgramsDto body)
     {
-        var user = body.UserId.Equals(default) ? null : _userManager.GetUserById(body.UserId);
+        var user = body.UserId.IsEmpty() ? null : _userManager.GetUserById(body.UserId);
 
         var query = new InternalItemsQuery(user)
         {
@@ -652,7 +653,7 @@ public class LiveTvController : BaseJellyfinApiController
             GenreIds = body.GenreIds
         };
 
-        if (!body.LibrarySeriesId.Equals(default))
+        if (!body.LibrarySeriesId.IsEmpty())
         {
             query.IsSeries = true;
 
@@ -711,7 +712,7 @@ public class LiveTvController : BaseJellyfinApiController
         [FromQuery] bool enableTotalRecordCount = true)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -750,7 +751,7 @@ public class LiveTvController : BaseJellyfinApiController
         [FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/MoviesController.cs b/Jellyfin.Api/Controllers/MoviesController.cs
index e1145481f..471bcd096 100644
--- a/Jellyfin.Api/Controllers/MoviesController.cs
+++ b/Jellyfin.Api/Controllers/MoviesController.cs
@@ -7,6 +7,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Dto;
@@ -69,7 +70,7 @@ public class MoviesController : BaseJellyfinApiController
         [FromQuery] int itemLimit = 8)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         var dtoOptions = new DtoOptions { Fields = fields }
diff --git a/Jellyfin.Api/Controllers/MusicGenresController.cs b/Jellyfin.Api/Controllers/MusicGenresController.cs
index 69b904264..5411baa3e 100644
--- a/Jellyfin.Api/Controllers/MusicGenresController.cs
+++ b/Jellyfin.Api/Controllers/MusicGenresController.cs
@@ -6,6 +6,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
@@ -95,7 +96,7 @@ public class MusicGenresController : BaseJellyfinApiController
             .AddClientFields(User)
             .AddAdditionalDtoOptions(enableImages, false, imageTypeLimit, enableImageTypes);
 
-        User? user = userId.Value.Equals(default)
+        User? user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -164,7 +165,7 @@ public class MusicGenresController : BaseJellyfinApiController
             return NotFound();
         }
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             var user = _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/PersonsController.cs b/Jellyfin.Api/Controllers/PersonsController.cs
index b4c6f490a..6ca308601 100644
--- a/Jellyfin.Api/Controllers/PersonsController.cs
+++ b/Jellyfin.Api/Controllers/PersonsController.cs
@@ -5,6 +5,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -83,7 +84,7 @@ public class PersonsController : BaseJellyfinApiController
             .AddClientFields(User)
             .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
-        User? user = userId.Value.Equals(default)
+        User? user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -129,7 +130,7 @@ public class PersonsController : BaseJellyfinApiController
             return NotFound();
         }
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             var user = _userManager.GetUserById(userId.Value);
             return _dtoService.GetBaseItemDto(item, dtoOptions, user);
diff --git a/Jellyfin.Api/Controllers/PlaylistsController.cs b/Jellyfin.Api/Controllers/PlaylistsController.cs
index c4c89ccde..921cc6031 100644
--- a/Jellyfin.Api/Controllers/PlaylistsController.cs
+++ b/Jellyfin.Api/Controllers/PlaylistsController.cs
@@ -9,6 +9,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.PlaylistDtos;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Playlists;
@@ -188,7 +189,7 @@ public class PlaylistsController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var user = userId.Equals(default)
+        var user = userId.IsEmpty()
             ? null
             : _userManager.GetUserById(userId);
 
diff --git a/Jellyfin.Api/Controllers/SearchController.cs b/Jellyfin.Api/Controllers/SearchController.cs
index 5b4594165..413b7b834 100644
--- a/Jellyfin.Api/Controllers/SearchController.cs
+++ b/Jellyfin.Api/Controllers/SearchController.cs
@@ -209,7 +209,7 @@ public class SearchController : BaseJellyfinApiController
                 break;
         }
 
-        if (!item.ChannelId.Equals(default))
+        if (!item.ChannelId.IsEmpty())
         {
             var channel = _libraryManager.GetItemById(item.ChannelId);
             result.ChannelName = channel?.Name;
diff --git a/Jellyfin.Api/Controllers/SessionController.cs b/Jellyfin.Api/Controllers/SessionController.cs
index 083515a94..52b58b8f1 100644
--- a/Jellyfin.Api/Controllers/SessionController.cs
+++ b/Jellyfin.Api/Controllers/SessionController.cs
@@ -10,6 +10,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Api.Models.SessionDtos;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Controller.Devices;
 using MediaBrowser.Controller.Library;
@@ -71,7 +72,7 @@ public class SessionController : BaseJellyfinApiController
             result = result.Where(i => string.Equals(i.DeviceId, deviceId, StringComparison.OrdinalIgnoreCase));
         }
 
-        if (controllableByUserId.HasValue && !controllableByUserId.Equals(default))
+        if (!controllableByUserId.IsNullOrEmpty())
         {
             result = result.Where(i => i.SupportsRemoteControl);
 
@@ -83,12 +84,12 @@ public class SessionController : BaseJellyfinApiController
 
             if (!user.HasPermission(PermissionKind.EnableRemoteControlOfOtherUsers))
             {
-                result = result.Where(i => i.UserId.Equals(default) || i.ContainsUser(controllableByUserId.Value));
+                result = result.Where(i => i.UserId.IsEmpty() || i.ContainsUser(controllableByUserId.Value));
             }
 
             if (!user.HasPermission(PermissionKind.EnableSharedDeviceControl))
             {
-                result = result.Where(i => !i.UserId.Equals(default));
+                result = result.Where(i => !i.UserId.IsEmpty());
             }
 
             result = result.Where(i =>
diff --git a/Jellyfin.Api/Controllers/StudiosController.cs b/Jellyfin.Api/Controllers/StudiosController.cs
index f434f60f5..708fc7436 100644
--- a/Jellyfin.Api/Controllers/StudiosController.cs
+++ b/Jellyfin.Api/Controllers/StudiosController.cs
@@ -5,6 +5,7 @@ using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -91,7 +92,7 @@ public class StudiosController : BaseJellyfinApiController
             .AddClientFields(User)
             .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
-        User? user = userId.Value.Equals(default)
+        User? user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -144,7 +145,7 @@ public class StudiosController : BaseJellyfinApiController
         var dtoOptions = new DtoOptions().AddClientFields(User);
 
         var item = _libraryManager.GetStudio(name);
-        if (!userId.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             var user = _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/SuggestionsController.cs b/Jellyfin.Api/Controllers/SuggestionsController.cs
index 675757fc5..2aa6d25a7 100644
--- a/Jellyfin.Api/Controllers/SuggestionsController.cs
+++ b/Jellyfin.Api/Controllers/SuggestionsController.cs
@@ -3,6 +3,7 @@ using System.ComponentModel.DataAnnotations;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -62,7 +63,7 @@ public class SuggestionsController : BaseJellyfinApiController
         [FromQuery] int? limit,
         [FromQuery] bool enableTotalRecordCount = false)
     {
-        var user = userId.Equals(default)
+        var user = userId.IsEmpty()
             ? null
             : _userManager.GetUserById(userId);
 
diff --git a/Jellyfin.Api/Controllers/TvShowsController.cs b/Jellyfin.Api/Controllers/TvShowsController.cs
index 55a30d469..3d84b61bf 100644
--- a/Jellyfin.Api/Controllers/TvShowsController.cs
+++ b/Jellyfin.Api/Controllers/TvShowsController.cs
@@ -111,7 +111,7 @@ public class TvShowsController : BaseJellyfinApiController
             },
             options);
 
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -150,7 +150,7 @@ public class TvShowsController : BaseJellyfinApiController
         [FromQuery] bool? enableUserData)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -222,7 +222,7 @@ public class TvShowsController : BaseJellyfinApiController
         [FromQuery] ItemSortBy? sortBy)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
@@ -284,7 +284,7 @@ public class TvShowsController : BaseJellyfinApiController
         }
 
         // This must be the last filter
-        if (adjacentTo.HasValue && !adjacentTo.Value.Equals(default))
+        if (!adjacentTo.IsNullOrEmpty())
         {
             episodes = UserViewBuilder.FilterForAdjacency(episodes, adjacentTo.Value).ToList();
         }
@@ -339,7 +339,7 @@ public class TvShowsController : BaseJellyfinApiController
         [FromQuery] bool? enableUserData)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
diff --git a/Jellyfin.Api/Controllers/UserController.cs b/Jellyfin.Api/Controllers/UserController.cs
index f9f27f148..ea10ee24f 100644
--- a/Jellyfin.Api/Controllers/UserController.cs
+++ b/Jellyfin.Api/Controllers/UserController.cs
@@ -8,6 +8,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.Models.UserDtos;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.Net;
@@ -532,7 +533,7 @@ public class UserController : BaseJellyfinApiController
     public ActionResult<UserDto> GetCurrentUser()
     {
         var userId = User.GetUserId();
-        if (userId.Equals(default))
+        if (userId.IsEmpty())
         {
             return BadRequest();
         }
diff --git a/Jellyfin.Api/Controllers/UserLibraryController.cs b/Jellyfin.Api/Controllers/UserLibraryController.cs
index 2c4fe9186..264e0a3db 100644
--- a/Jellyfin.Api/Controllers/UserLibraryController.cs
+++ b/Jellyfin.Api/Controllers/UserLibraryController.cs
@@ -8,6 +8,7 @@ using Jellyfin.Api.Extensions;
 using Jellyfin.Api.ModelBinders;
 using Jellyfin.Data.Entities;
 using Jellyfin.Data.Enums;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
@@ -84,7 +85,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -145,7 +146,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -185,7 +186,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -221,7 +222,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -257,7 +258,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -294,7 +295,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -330,7 +331,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -375,7 +376,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
@@ -558,7 +559,7 @@ public class UserLibraryController : BaseJellyfinApiController
             return NotFound();
         }
 
-        var item = itemId.Equals(default)
+        var item = itemId.IsEmpty()
             ? _libraryManager.GetUserRootFolder()
             : _libraryManager.GetItemById(itemId);
 
diff --git a/Jellyfin.Api/Controllers/VideosController.cs b/Jellyfin.Api/Controllers/VideosController.cs
index c231c147f..e6c319869 100644
--- a/Jellyfin.Api/Controllers/VideosController.cs
+++ b/Jellyfin.Api/Controllers/VideosController.cs
@@ -11,6 +11,7 @@ using Jellyfin.Api.Constants;
 using Jellyfin.Api.Extensions;
 using Jellyfin.Api.Helpers;
 using Jellyfin.Api.ModelBinders;
+using Jellyfin.Extensions;
 using MediaBrowser.Common.Api;
 using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Net;
@@ -96,12 +97,12 @@ public class VideosController : BaseJellyfinApiController
     public ActionResult<QueryResult<BaseItemDto>> GetAdditionalPart([FromRoute, Required] Guid itemId, [FromQuery] Guid? userId)
     {
         userId = RequestHelpers.GetUserId(User, userId);
-        var user = userId.Value.Equals(default)
+        var user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
 
-        var item = itemId.Equals(default)
-            ? (userId.Value.Equals(default)
+        var item = itemId.IsEmpty()
+            ? (userId.IsNullOrEmpty()
                 ? _libraryManager.RootFolder
                 : _libraryManager.GetUserRootFolder())
             : _libraryManager.GetItemById(itemId);
diff --git a/Jellyfin.Api/Controllers/YearsController.cs b/Jellyfin.Api/Controllers/YearsController.cs
index ca46c38c5..e4aa0ea42 100644
--- a/Jellyfin.Api/Controllers/YearsController.cs
+++ b/Jellyfin.Api/Controllers/YearsController.cs
@@ -90,7 +90,7 @@ public class YearsController : BaseJellyfinApiController
             .AddClientFields(User)
             .AddAdditionalDtoOptions(enableImages, enableUserData, imageTypeLimit, enableImageTypes);
 
-        User? user = userId.Value.Equals(default)
+        User? user = userId.IsNullOrEmpty()
             ? null
             : _userManager.GetUserById(userId.Value);
         BaseItem parentItem = _libraryManager.GetParentItem(parentId, userId);
@@ -110,7 +110,7 @@ public class YearsController : BaseJellyfinApiController
         {
             var folder = (Folder)parentItem;
 
-            if (userId.Equals(default))
+            if (userId.IsNullOrEmpty())
             {
                 items = recursive ? folder.GetRecursiveChildren(Filter) : folder.Children.Where(Filter).ToList();
             }
@@ -182,7 +182,7 @@ public class YearsController : BaseJellyfinApiController
         var dtoOptions = new DtoOptions()
             .AddClientFields(User);
 
-        if (!userId.Value.Equals(default))
+        if (!userId.IsNullOrEmpty())
         {
             var user = _userManager.GetUserById(userId.Value);
             return _dtoService.GetBaseItemDto(item, dtoOptions, user);