Merge remote-tracking branch 'origin/master' into HEAD

18 files changed, 265 insertions, 266 deletions

diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
index 4ad84579d..7a6aea9c1 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/AudioResolver.cs
@@ -1,10 +1,15 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Emby.Naming.Audio;
 using Emby.Naming.AudioBook;
+using Emby.Naming.Common;
+using Emby.Naming.Video;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
@@ -19,11 +24,11 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
     /// </summary>
     public class AudioResolver : ItemResolver<MediaBrowser.Controller.Entities.Audio.Audio>, IMultiItemResolver
     {
-        private readonly ILibraryManager LibraryManager;
+        private readonly NamingOptions _namingOptions;
 
-        public AudioResolver(ILibraryManager libraryManager)
+        public AudioResolver(NamingOptions namingOptions)
         {
-            LibraryManager = libraryManager;
+            _namingOptions = namingOptions;
         }
 
         /// <summary>
@@ -38,7 +43,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             string collectionType,
             IDirectoryService directoryService)
         {
-            var result = ResolveMultipleInternal(parent, files, collectionType, directoryService);
+            var result = ResolveMultipleInternal(parent, files, collectionType);
 
             if (result != null)
             {
@@ -54,12 +59,11 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         private MultiItemResolverResult ResolveMultipleInternal(
             Folder parent,
             List<FileSystemMetadata> files,
-            string collectionType,
-            IDirectoryService directoryService)
+            string collectionType)
         {
             if (string.Equals(collectionType, CollectionType.Books, StringComparison.OrdinalIgnoreCase))
             {
-                return ResolveMultipleAudio<AudioBook>(parent, files, directoryService, false, collectionType, true);
+                return ResolveMultipleAudio(parent, files, true);
             }
 
             return null;
@@ -85,14 +89,10 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                     return null;
                 }
 
-                var files = args.FileSystemChildren
-                    .Where(i => !LibraryManager.IgnoreFile(i, args.Parent))
-                    .ToList();
-
-                return FindAudio<AudioBook>(args, args.Path, args.Parent, files, args.DirectoryService, collectionType, false);
+                return FindAudioBook(args, false);
             }
 
-            if (LibraryManager.IsAudioFile(args.Path))
+            if (AudioFileParser.IsAudioFile(args.Path, _namingOptions))
             {
                 var extension = Path.GetExtension(args.Path);
 
@@ -105,7 +105,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                 var isMixedCollectionType = string.IsNullOrEmpty(collectionType);
 
                 // For conflicting extensions, give priority to videos
-                if (isMixedCollectionType && LibraryManager.IsVideoFile(args.Path))
+                if (isMixedCollectionType && VideoResolver.IsVideoFile(args.Path, _namingOptions))
                 {
                     return null;
                 }
@@ -139,29 +139,23 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             return null;
         }
 
-        private T FindAudio<T>(ItemResolveArgs args, string path, Folder parent, List<FileSystemMetadata> fileSystemEntries, IDirectoryService directoryService, string collectionType, bool parseName)
-            where T : MediaBrowser.Controller.Entities.Audio.Audio, new()
+        private AudioBook FindAudioBook(ItemResolveArgs args, bool parseName)
         {
             // TODO: Allow GetMultiDiscMovie in here
-            const bool supportsMultiVersion = false;
-
-            var result = ResolveMultipleAudio<T>(parent, fileSystemEntries, directoryService, supportsMultiVersion, collectionType, parseName) ??
-                new MultiItemResolverResult();
+            var result = ResolveMultipleAudio(args.Parent, args.GetActualFileSystemChildren(), parseName);
 
-            if (result.Items.Count == 1)
+            if (result == null || result.Items.Count != 1 || result.Items[0] is not AudioBook item)
             {
-                // If we were supporting this we'd be checking filesFromOtherItems
-                var item = (T)result.Items[0];
-                item.IsInMixedFolder = false;
-                item.Name = Path.GetFileName(item.ContainingFolderPath);
-                return item;
+                return null;
             }
 
-            return null;
+            // If we were supporting this we'd be checking filesFromOtherItems
+            item.IsInMixedFolder = false;
+            item.Name = Path.GetFileName(item.ContainingFolderPath);
+            return item;
         }
 
-        private MultiItemResolverResult ResolveMultipleAudio<T>(Folder parent, IEnumerable<FileSystemMetadata> fileSystemEntries, IDirectoryService directoryService, bool suppportMultiEditions, string collectionType, bool parseName)
-            where T : MediaBrowser.Controller.Entities.Audio.Audio, new()
+        private MultiItemResolverResult ResolveMultipleAudio(Folder parent, IEnumerable<FileSystemMetadata> fileSystemEntries, bool parseName)
         {
             var files = new List<FileSystemMetadata>();
             var items = new List<BaseItem>();
@@ -174,15 +168,13 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
                 {
                     leftOver.Add(child);
                 }
-                else if (!IsIgnored(child.Name))
+                else
                 {
                     files.Add(child);
                 }
             }
 
-            var namingOptions = ((LibraryManager)LibraryManager).GetNamingOptions();
-
-            var resolver = new AudioBookListResolver(namingOptions);
+            var resolver = new AudioBookListResolver(_namingOptions);
             var resolverResult = resolver.Resolve(files).ToList();
 
             var result = new MultiItemResolverResult
@@ -208,7 +200,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
 
                 var firstMedia = resolvedItem.Files[0];
 
-                var libraryItem = new T
+                var libraryItem = new AudioBook
                 {
                     Path = firstMedia.Path,
                     IsInMixedFolder = isInMixedFolder,
@@ -228,12 +220,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             return result;
         }
 
-        private bool ContainsFile(List<AudioBookInfo> result, FileSystemMetadata file)
+        private static bool ContainsFile(IEnumerable<AudioBookInfo> result, FileSystemMetadata file)
         {
             return result.Any(i => ContainsFile(i, file));
         }
 
-        private bool ContainsFile(AudioBookInfo result, FileSystemMetadata file)
+        private static bool ContainsFile(AudioBookInfo result, FileSystemMetadata file)
         {
             return result.Files.Any(i => ContainsFile(i, file)) ||
                 result.AlternateVersions.Any(i => ContainsFile(i, file)) ||
@@ -244,10 +236,5 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         {
             return string.Equals(result.Path, file.FullName, StringComparison.OrdinalIgnoreCase);
         }
-
-        private static bool IsIgnored(string filename)
-        {
-            return false;
-        }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/MusicAlbumResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/MusicAlbumResolver.cs
index bf32381eb..a9819a364 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/MusicAlbumResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/MusicAlbumResolver.cs
@@ -1,9 +1,12 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
 using Emby.Naming.Audio;
+using Emby.Naming.Common;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
@@ -20,20 +23,17 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
     public class MusicAlbumResolver : ItemResolver<MusicAlbum>
     {
         private readonly ILogger<MusicAlbumResolver> _logger;
-        private readonly IFileSystem _fileSystem;
-        private readonly ILibraryManager _libraryManager;
+        private readonly NamingOptions _namingOptions;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MusicAlbumResolver"/> class.
         /// </summary>
         /// <param name="logger">The logger.</param>
-        /// <param name="fileSystem">The file system.</param>
-        /// <param name="libraryManager">The library manager.</param>
-        public MusicAlbumResolver(ILogger<MusicAlbumResolver> logger, IFileSystem fileSystem, ILibraryManager libraryManager)
+        /// <param name="namingOptions">The naming options.</param>
+        public MusicAlbumResolver(ILogger<MusicAlbumResolver> logger, NamingOptions namingOptions)
         {
             _logger = logger;
-            _fileSystem = fileSystem;
-            _libraryManager = libraryManager;
+            _namingOptions = namingOptions;
         }
 
         /// <summary>
@@ -80,9 +80,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         /// <summary>
         /// Determine if the supplied file data points to a music album.
         /// </summary>
+        /// <param name="path">The path to check.</param>
+        /// <param name="directoryService">The directory service.</param>
+        /// <returns><c>true</c> if the provided path points to a music album, <c>false</c> otherwise.</returns>
         public bool IsMusicAlbum(string path, IDirectoryService directoryService)
         {
-            return ContainsMusic(directoryService.GetFileSystemEntries(path), true, directoryService, _logger, _fileSystem, _libraryManager);
+            return ContainsMusic(directoryService.GetFileSystemEntries(path), true, directoryService);
         }
 
         /// <summary>
@@ -96,7 +99,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
             if (args.IsDirectory)
             {
                 // if (args.Parent is MusicArtist) return true;  // saves us from testing children twice
-                if (ContainsMusic(args.FileSystemChildren, true, args.DirectoryService, _logger, _fileSystem, _libraryManager))
+                if (ContainsMusic(args.FileSystemChildren, true, args.DirectoryService))
                 {
                     return true;
                 }
@@ -111,13 +114,10 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
         private bool ContainsMusic(
             IEnumerable<FileSystemMetadata> list,
             bool allowSubfolders,
-            IDirectoryService directoryService,
-            ILogger<MusicAlbumResolver> logger,
-            IFileSystem fileSystem,
-            ILibraryManager libraryManager)
+            IDirectoryService directoryService)
         {
             // check for audio files before digging down into directories
-            var foundAudioFile = list.Any(fileSystemInfo => !fileSystemInfo.IsDirectory && libraryManager.IsAudioFile(fileSystemInfo.FullName));
+            var foundAudioFile = list.Any(fileSystemInfo => !fileSystemInfo.IsDirectory && AudioFileParser.IsAudioFile(fileSystemInfo.FullName, _namingOptions));
             if (foundAudioFile)
             {
                 // at least one audio file exists
@@ -132,21 +132,20 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
 
             var discSubfolderCount = 0;
 
-            var namingOptions = ((LibraryManager)_libraryManager).GetNamingOptions();
-            var parser = new AlbumParser(namingOptions);
+            var parser = new AlbumParser(_namingOptions);
 
             var directories = list.Where(fileSystemInfo => fileSystemInfo.IsDirectory);
 
             var result = Parallel.ForEach(directories, (fileSystemInfo, state) =>
             {
                 var path = fileSystemInfo.FullName;
-                var hasMusic = ContainsMusic(directoryService.GetFileSystemEntries(path), false, directoryService, logger, fileSystem, libraryManager);
+                var hasMusic = ContainsMusic(directoryService.GetFileSystemEntries(path), false, directoryService);
 
                 if (hasMusic)
                 {
                     if (parser.IsMultiPart(path))
                     {
-                        logger.LogDebug("Found multi-disc folder: " + path);
+                        _logger.LogDebug("Found multi-disc folder: {Path}", path);
                         Interlocked.Increment(ref discSubfolderCount);
                     }
                     else
diff --git a/Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs
index 60f82806f..27e18be42 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs
@@ -1,6 +1,9 @@
+#nullable disable
+
 using System;
 using System.Linq;
 using System.Threading.Tasks;
+using Emby.Naming.Common;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities.Audio;
 using MediaBrowser.Controller.Library;
@@ -17,27 +20,19 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
     public class MusicArtistResolver : ItemResolver<MusicArtist>
     {
         private readonly ILogger<MusicAlbumResolver> _logger;
-        private readonly IFileSystem _fileSystem;
-        private readonly ILibraryManager _libraryManager;
-        private readonly IServerConfigurationManager _config;
+        private NamingOptions _namingOptions;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MusicArtistResolver"/> class.
         /// </summary>
         /// <param name="logger">The logger for the created <see cref="MusicAlbumResolver"/> instances.</param>
-        /// <param name="fileSystem">The file system.</param>
-        /// <param name="libraryManager">The library manager.</param>
-        /// <param name="config">The configuration manager.</param>
+        /// <param name="namingOptions">The naming options.</param>
         public MusicArtistResolver(
             ILogger<MusicAlbumResolver> logger,
-            IFileSystem fileSystem,
-            ILibraryManager libraryManager,
-            IServerConfigurationManager config)
+            NamingOptions namingOptions)
         {
             _logger = logger;
-            _fileSystem = fileSystem;
-            _libraryManager = libraryManager;
-            _config = config;
+            _namingOptions = namingOptions;
         }
 
         /// <summary>
@@ -87,7 +82,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Audio
 
             var directoryService = args.DirectoryService;
 
-            var albumResolver = new MusicAlbumResolver(_logger, _fileSystem, _libraryManager);
+            var albumResolver = new MusicAlbumResolver(_logger, _namingOptions);
 
             // If we contain an album assume we are an artist folder
             var directories = args.FileSystemChildren.Where(i => i.IsDirectory);
diff --git a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
index 6e688693b..0ebf0e530 100644
--- a/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs
@@ -1,8 +1,12 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.IO;
 using System.Linq;
+using DiscUtils.Udf;
+using Emby.Naming.Common;
 using Emby.Naming.Video;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -14,17 +18,17 @@ namespace Emby.Server.Implementations.Library.Resolvers
     /// <summary>
     /// Resolves a Path into a Video or Video subclass.
     /// </summary>
-    /// <typeparam name="T"></typeparam>
+    /// <typeparam name="T">The type of item to resolve.</typeparam>
     public abstract class BaseVideoResolver<T> : MediaBrowser.Controller.Resolvers.ItemResolver<T>
         where T : Video, new()
     {
-        protected readonly ILibraryManager LibraryManager;
-
-        protected BaseVideoResolver(ILibraryManager libraryManager)
+        protected BaseVideoResolver(NamingOptions namingOptions)
         {
-            LibraryManager = libraryManager;
+            NamingOptions = namingOptions;
         }
 
+        protected NamingOptions NamingOptions { get; }
+
         /// <summary>
         /// Resolves the specified args.
         /// </summary>
@@ -45,11 +49,9 @@ namespace Emby.Server.Implementations.Library.Resolvers
         protected virtual TVideoType ResolveVideo<TVideoType>(ItemResolveArgs args, bool parseName)
               where TVideoType : Video, new()
         {
-            var namingOptions = ((LibraryManager)LibraryManager).GetNamingOptions();
+            var namingOptions = NamingOptions;
 
             // If the path is a file check for a matching extensions
-            var parser = new VideoResolver(namingOptions);
-
             if (args.IsDirectory)
             {
                 TVideoType video = null;
@@ -64,7 +66,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                     {
                         if (IsDvdDirectory(child.FullName, filename, args.DirectoryService))
                         {
-                            videoInfo = parser.ResolveDirectory(args.Path);
+                            videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
 
                             if (videoInfo == null)
                             {
@@ -80,9 +82,9 @@ namespace Emby.Server.Implementations.Library.Resolvers
                             break;
                         }
 
-                        if (IsBluRayDirectory(child.FullName, filename, args.DirectoryService))
+                        if (IsBluRayDirectory(filename))
                         {
-                            videoInfo = parser.ResolveDirectory(args.Path);
+                            videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
 
                             if (videoInfo == null)
                             {
@@ -100,7 +102,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                     }
                     else if (IsDvdFile(filename))
                     {
-                        videoInfo = parser.ResolveDirectory(args.Path);
+                        videoInfo = VideoResolver.ResolveDirectory(args.Path, namingOptions);
 
                         if (videoInfo == null)
                         {
@@ -130,14 +132,14 @@ namespace Emby.Server.Implementations.Library.Resolvers
             }
             else
             {
-                var videoInfo = parser.Resolve(args.Path, false, false);
+                var videoInfo = VideoResolver.Resolve(args.Path, false, namingOptions, false);
 
                 if (videoInfo == null)
                 {
                     return null;
                 }
 
-                if (LibraryManager.IsVideoFile(args.Path) || videoInfo.IsStub)
+                if (VideoResolver.IsVideoFile(args.Path, NamingOptions) || videoInfo.IsStub)
                 {
                     var path = args.Path;
 
@@ -165,13 +167,13 @@ namespace Emby.Server.Implementations.Library.Resolvers
 
         protected void SetVideoType(Video video, VideoFileInfo videoInfo)
         {
-            var extension = Path.GetExtension(video.Path);
-            video.VideoType = string.Equals(extension, ".iso", StringComparison.OrdinalIgnoreCase) ||
-                string.Equals(extension, ".img", StringComparison.OrdinalIgnoreCase) ?
-              VideoType.Iso :
-              VideoType.VideoFile;
+            var extension = Path.GetExtension(video.Path.AsSpan());
+            video.VideoType = extension.Equals(".iso", StringComparison.OrdinalIgnoreCase)
+                              || extension.Equals(".img", StringComparison.OrdinalIgnoreCase)
+                ? VideoType.Iso
+                : VideoType.VideoFile;
 
-            video.IsShortcut = string.Equals(extension, ".strm", StringComparison.OrdinalIgnoreCase);
+            video.IsShortcut = extension.Equals(".strm", StringComparison.OrdinalIgnoreCase);
             video.IsPlaceHolder = videoInfo.IsStub;
 
             if (videoInfo.IsStub)
@@ -193,14 +195,30 @@ namespace Emby.Server.Implementations.Library.Resolvers
         {
             if (video.VideoType == VideoType.Iso)
             {
-                if (video.Path.IndexOf("dvd", StringComparison.OrdinalIgnoreCase) != -1)
+                if (video.Path.Contains("dvd", StringComparison.OrdinalIgnoreCase))
                 {
                     video.IsoType = IsoType.Dvd;
                 }
-                else if (video.Path.IndexOf("bluray", StringComparison.OrdinalIgnoreCase) != -1)
+                else if (video.Path.Contains("bluray", StringComparison.OrdinalIgnoreCase))
                 {
                     video.IsoType = IsoType.BluRay;
                 }
+                else
+                {
+                    // use disc-utils, both DVDs and BDs use UDF filesystem
+                    using (var videoFileStream = File.Open(video.Path, FileMode.Open, FileAccess.Read))
+                    {
+                        UdfReader udfReader = new UdfReader(videoFileStream);
+                        if (udfReader.DirectoryExists("VIDEO_TS"))
+                        {
+                            video.IsoType = IsoType.Dvd;
+                        }
+                        else if (udfReader.DirectoryExists("BDMV"))
+                        {
+                            video.IsoType = IsoType.BluRay;
+                        }
+                    }
+                }
             }
         }
 
@@ -250,10 +268,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
 
         protected void Set3DFormat(Video video)
         {
-            var namingOptions = ((LibraryManager)LibraryManager).GetNamingOptions();
-
-            var resolver = new Format3DParser(namingOptions);
-            var result = resolver.Parse(video.Path);
+            var result = Format3DParser.Parse(video.Path, NamingOptions);
 
             Set3DFormat(video, result.Is3D, result.Format3D);
         }
@@ -261,6 +276,10 @@ namespace Emby.Server.Implementations.Library.Resolvers
         /// <summary>
         /// Determines whether [is DVD directory] [the specified directory name].
         /// </summary>
+        /// <param name="fullPath">The full path of the directory.</param>
+        /// <param name="directoryName">The name of the directory.</param>
+        /// <param name="directoryService">The directory service.</param>
+        /// <returns><c>true</c> if the provided directory is a DVD directory, <c>false</c> otherwise.</returns>
         protected bool IsDvdDirectory(string fullPath, string directoryName, IDirectoryService directoryService)
         {
             if (!string.Equals(directoryName, "video_ts", StringComparison.OrdinalIgnoreCase))
@@ -282,25 +301,13 @@ namespace Emby.Server.Implementations.Library.Resolvers
         }
 
         /// <summary>
-        /// Determines whether [is blu ray directory] [the specified directory name].
+        /// Determines whether [is bluray directory] [the specified directory name].
         /// </summary>
-        protected bool IsBluRayDirectory(string fullPath, string directoryName, IDirectoryService directoryService)
+        /// <param name="directoryName">The directory name.</param>
+        /// <returns>Whether the directory is a bluray directory.</returns>
+        protected bool IsBluRayDirectory(string directoryName)
         {
-            if (!string.Equals(directoryName, "bdmv", StringComparison.OrdinalIgnoreCase))
-            {
-                return false;
-            }
-
-            return true;
-            // var blurayExtensions = new[]
-            //{
-            //    ".mts",
-            //    ".m2ts",
-            //    ".bdmv",
-            //    ".mpls"
-            //};
-
-            // return directoryService.GetFiles(fullPath).Any(i => blurayExtensions.Contains(i.Extension ?? string.Empty, StringComparer.OrdinalIgnoreCase));
+            return string.Equals(directoryName, "bdmv", StringComparison.OrdinalIgnoreCase);
         }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
index 0525c7e30..e685c87f1 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Books/BookResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -47,13 +49,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.Books
         {
             var bookFiles = args.FileSystemChildren.Where(f =>
             {
-                var fileExtension = Path.GetExtension(f.FullName) ??
-                                    string.Empty;
+                var fileExtension = Path.GetExtension(f.FullName)
+                    ?? string.Empty;
 
                 return _validExtensions.Contains(
                     fileExtension,
-                                                StringComparer
-                                                    .OrdinalIgnoreCase);
+                    StringComparer.OrdinalIgnoreCase);
             }).ToList();
 
             // Don't return a Book if there is more (or less) than one document in the directory
diff --git a/Emby.Server.Implementations/Library/Resolvers/FolderResolver.cs b/Emby.Server.Implementations/Library/Resolvers/FolderResolver.cs
index 7dbce7a6e..db7703cd6 100644
--- a/Emby.Server.Implementations/Library/Resolvers/FolderResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/FolderResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Resolvers;
@@ -7,7 +9,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
     /// <summary>
     /// Class FolderResolver.
     /// </summary>
-    public class FolderResolver : FolderResolver<Folder>
+    public class FolderResolver : GenericFolderResolver<Folder>
     {
         /// <summary>
         /// Gets the priority.
@@ -30,24 +32,4 @@ namespace Emby.Server.Implementations.Library.Resolvers
             return null;
         }
     }
-
-    /// <summary>
-    /// Class FolderResolver.
-    /// </summary>
-    /// <typeparam name="TItemType">The type of the T item type.</typeparam>
-    public abstract class FolderResolver<TItemType> : ItemResolver<TItemType>
-        where TItemType : Folder, new()
-    {
-        /// <summary>
-        /// Sets the initial item values.
-        /// </summary>
-        /// <param name="item">The item.</param>
-        /// <param name="args">The args.</param>
-        protected override void SetInitialItemValues(TItemType item, ItemResolveArgs args)
-        {
-            base.SetInitialItemValues(item, args);
-
-            item.IsRoot = args.Parent == null;
-        }
-    }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
new file mode 100644
index 000000000..f109a5e9a
--- /dev/null
+++ b/Emby.Server.Implementations/Library/Resolvers/GenericFolderResolver.cs
@@ -0,0 +1,27 @@
+#nullable disable
+
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+
+namespace Emby.Server.Implementations.Library.Resolvers
+{
+    /// <summary>
+    /// Class FolderResolver.
+    /// </summary>
+    /// <typeparam name="TItemType">The type of the T item type.</typeparam>
+    public abstract class GenericFolderResolver<TItemType> : ItemResolver<TItemType>
+        where TItemType : Folder, new()
+    {
+        /// <summary>
+        /// Sets the initial item values.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="args">The args.</param>
+        protected override void SetInitialItemValues(TItemType item, ItemResolveArgs args)
+        {
+            base.SetInitialItemValues(item, args);
+
+            item.IsRoot = args.Parent == null;
+        }
+    }
+}
diff --git a/Emby.Server.Implementations/Library/Resolvers/VideoResolver.cs b/Emby.Server.Implementations/Library/Resolvers/GenericVideoResolver.cs
index 62268fce9..72341d9db 100644
--- a/Emby.Server.Implementations/Library/Resolvers/VideoResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/GenericVideoResolver.cs
@@ -1,15 +1,17 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
+using Emby.Naming.Common;
 using MediaBrowser.Controller.Entities;
-using MediaBrowser.Controller.Library;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
     public class GenericVideoResolver<T> : BaseVideoResolver<T>
         where T : Video, new()
     {
-        public GenericVideoResolver(ILibraryManager libraryManager)
-            : base(libraryManager)
+        public GenericVideoResolver(NamingOptions namingOptions)
+            : base(namingOptions)
         {
         }
     }
diff --git a/Emby.Server.Implementations/Library/Resolvers/ItemResolver.cs b/Emby.Server.Implementations/Library/Resolvers/ItemResolver.cs
index 9ca76095b..3f29ab191 100644
--- a/Emby.Server.Implementations/Library/Resolvers/ItemResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/ItemResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Resolvers;
@@ -7,11 +9,17 @@ namespace Emby.Server.Implementations.Library.Resolvers
     /// <summary>
     /// Class ItemResolver.
     /// </summary>
-    /// <typeparam name="T"></typeparam>
+    /// <typeparam name="T">The type of BaseItem.</typeparam>
     public abstract class ItemResolver<T> : IItemResolver
         where T : BaseItem, new()
     {
         /// <summary>
+        /// Gets the priority.
+        /// </summary>
+        /// <value>The priority.</value>
+        public virtual ResolverPriority Priority => ResolverPriority.First;
+
+        /// <summary>
         /// Resolves the specified args.
         /// </summary>
         /// <param name="args">The args.</param>
@@ -22,12 +30,6 @@ namespace Emby.Server.Implementations.Library.Resolvers
         }
 
         /// <summary>
-        /// Gets the priority.
-        /// </summary>
-        /// <value>The priority.</value>
-        public virtual ResolverPriority Priority => ResolverPriority.First;
-
-        /// <summary>
         /// Sets initial values on the newly resolved item.
         /// </summary>
         /// <param name="item">The item.</param>
diff --git a/Emby.Server.Implementations/Library/Resolvers/Movies/BoxSetResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Movies/BoxSetResolver.cs
index 295e9e120..e7abe1e6d 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Movies/BoxSetResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Movies/BoxSetResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.IO;
 using MediaBrowser.Controller.Entities;
@@ -10,7 +12,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
     /// <summary>
     /// Class BoxSetResolver.
     /// </summary>
-    public class BoxSetResolver : FolderResolver<BoxSet>
+    public class BoxSetResolver : GenericFolderResolver<BoxSet>
     {
         /// <summary>
         /// Resolves the specified args.
diff --git a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
index 714bc3a84..732be0fe5 100644
--- a/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs
@@ -1,9 +1,13 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text.RegularExpressions;
+using Emby.Naming.Common;
 using Emby.Naming.Video;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Movies;
@@ -21,6 +25,9 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
     /// </summary>
     public class MovieResolver : BaseVideoResolver<Video>, IMultiItemResolver
     {
+        private readonly IImageProcessor _imageProcessor;
+        private readonly StackResolver _stackResolver;
+
         private string[] _validCollectionTypes = new[]
         {
                 CollectionType.Movies,
@@ -30,17 +37,16 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 CollectionType.Photos
         };
 
-        private readonly IImageProcessor _imageProcessor;
-
         /// <summary>
         /// Initializes a new instance of the <see cref="MovieResolver"/> class.
         /// </summary>
-        /// <param name="libraryManager">The library manager.</param>
         /// <param name="imageProcessor">The image processor.</param>
-        public MovieResolver(ILibraryManager libraryManager, IImageProcessor imageProcessor)
-            : base(libraryManager)
+        /// <param name="namingOptions">The naming options.</param>
+        public MovieResolver(IImageProcessor imageProcessor, NamingOptions namingOptions)
+            : base(namingOptions)
         {
             _imageProcessor = imageProcessor;
+            _stackResolver = new StackResolver(NamingOptions);
         }
 
         /// <summary>
@@ -86,9 +92,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                     return null;
                 }
 
-                var files = args.FileSystemChildren
-                    .Where(i => !LibraryManager.IgnoreFile(i, args.Parent))
-                    .ToList();
+                var files = args.GetActualFileSystemChildren().ToList();
 
                 if (string.Equals(collectionType, CollectionType.MusicVideos, StringComparison.OrdinalIgnoreCase))
                 {
@@ -255,10 +259,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 }
             }
 
-            var namingOptions = ((LibraryManager)LibraryManager).GetNamingOptions();
-
-            var resolver = new VideoListResolver(namingOptions);
-            var resolverResult = resolver.Resolve(files, suppportMultiEditions).ToList();
+            var resolverResult = VideoListResolver.Resolve(files, NamingOptions, suppportMultiEditions).ToList();
 
             var result = new MultiItemResolverResult
             {
@@ -376,7 +377,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
         {
             var multiDiscFolders = new List<FileSystemMetadata>();
 
-            var libraryOptions = args.GetLibraryOptions();
+            var libraryOptions = args.LibraryOptions;
             var supportPhotos = string.Equals(collectionType, CollectionType.HomeVideos, StringComparison.OrdinalIgnoreCase) && libraryOptions.EnablePhotos;
             var photos = new List<FileSystemMetadata>();
 
@@ -398,7 +399,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                         return movie;
                     }
 
-                    if (IsBluRayDirectory(child.FullName, filename, directoryService))
+                    if (IsBluRayDirectory(filename))
                     {
                         var movie = new T
                         {
@@ -436,7 +437,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             if (result.Items.Count == 1)
             {
                 var videoPath = result.Items[0].Path;
-                var hasPhotos = photos.Any(i => !PhotoResolver.IsOwnedByResolvedMedia(LibraryManager, videoPath, i.Name));
+                var hasPhotos = photos.Any(i => !PhotoResolver.IsOwnedByResolvedMedia(videoPath, i.Name));
 
                 if (!hasPhotos)
                 {
@@ -479,7 +480,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                     return true;
                 }
 
-                if (subfolders.Any(s => IsBluRayDirectory(s.FullName, s.Name, directoryService)))
+                if (subfolders.Any(s => IsBluRayDirectory(s.Name)))
                 {
                     videoTypes.Add(VideoType.BluRay);
                     return true;
@@ -509,9 +510,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 return null;
             }
 
-            var namingOptions = ((LibraryManager)LibraryManager).GetNamingOptions();
-
-            var result = new StackResolver(namingOptions).ResolveDirectories(folderPaths).ToList();
+            var result = _stackResolver.ResolveDirectories(folderPaths).ToList();
 
             if (result.Count != 1)
             {
@@ -535,7 +534,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
             return returnVideo;
         }
 
-        private bool IsInvalid(Folder parent, string collectionType)
+        private bool IsInvalid(Folder parent, ReadOnlySpan<char> collectionType)
         {
             if (parent != null)
             {
@@ -545,12 +544,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
                 }
             }
 
-            if (string.IsNullOrEmpty(collectionType))
+            if (collectionType.IsEmpty)
             {
                 return false;
             }
 
-            return !_validCollectionTypes.Contains(collectionType, StringComparer.OrdinalIgnoreCase);
+            return !_validCollectionTypes.Contains(collectionType, StringComparison.OrdinalIgnoreCase);
         }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/PhotoAlbumResolver.cs b/Emby.Server.Implementations/Library/Resolvers/PhotoAlbumResolver.cs
index 3ac837057..7dd0ab185 100644
--- a/Emby.Server.Implementations/Library/Resolvers/PhotoAlbumResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/PhotoAlbumResolver.cs
@@ -1,4 +1,7 @@
+#nullable disable
+
 using System;
+using Emby.Naming.Common;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -10,22 +13,25 @@ namespace Emby.Server.Implementations.Library.Resolvers
     /// <summary>
     /// Class PhotoAlbumResolver.
     /// </summary>
-    public class PhotoAlbumResolver : FolderResolver<PhotoAlbum>
+    public class PhotoAlbumResolver : GenericFolderResolver<PhotoAlbum>
     {
         private readonly IImageProcessor _imageProcessor;
-        private ILibraryManager _libraryManager;
+        private readonly NamingOptions _namingOptions;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="PhotoAlbumResolver"/> class.
         /// </summary>
         /// <param name="imageProcessor">The image processor.</param>
-        /// <param name="libraryManager">The library manager.</param>
-        public PhotoAlbumResolver(IImageProcessor imageProcessor, ILibraryManager libraryManager)
+        /// <param name="namingOptions">The naming options.</param>
+        public PhotoAlbumResolver(IImageProcessor imageProcessor, NamingOptions namingOptions)
         {
             _imageProcessor = imageProcessor;
-            _libraryManager = libraryManager;
+            _namingOptions = namingOptions;
         }
 
+        /// <inheritdoc />
+        public override ResolverPriority Priority => ResolverPriority.Second;
+
         /// <summary>
         /// Resolves the specified args.
         /// </summary>
@@ -39,8 +45,8 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 // Must be an image file within a photo collection
                 var collectionType = args.GetCollectionType();
 
-                if (string.Equals(collectionType, CollectionType.Photos, StringComparison.OrdinalIgnoreCase) ||
-                    (string.Equals(collectionType, CollectionType.HomeVideos, StringComparison.OrdinalIgnoreCase) && args.GetLibraryOptions().EnablePhotos))
+                if (string.Equals(collectionType, CollectionType.Photos, StringComparison.OrdinalIgnoreCase)
+                    || (string.Equals(collectionType, CollectionType.HomeVideos, StringComparison.OrdinalIgnoreCase) && args.LibraryOptions.EnablePhotos))
                 {
                     if (HasPhotos(args))
                     {
@@ -68,7 +74,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
 
                     foreach (var siblingFile in files)
                     {
-                        if (PhotoResolver.IsOwnedByMedia(_libraryManager, siblingFile.FullName, filename))
+                        if (PhotoResolver.IsOwnedByMedia(_namingOptions, siblingFile.FullName, filename))
                         {
                             ownedByMedia = true;
                             break;
@@ -84,8 +90,5 @@ namespace Emby.Server.Implementations.Library.Resolvers
 
             return false;
         }
-
-        /// <inheritdoc />
-        public override ResolverPriority Priority => ResolverPriority.Second;
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/PhotoResolver.cs b/Emby.Server.Implementations/Library/Resolvers/PhotoResolver.cs
index bcfcee9c6..51d819303 100644
--- a/Emby.Server.Implementations/Library/Resolvers/PhotoResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/PhotoResolver.cs
@@ -1,9 +1,13 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using Emby.Naming.Common;
+using Emby.Naming.Video;
 using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -14,7 +18,8 @@ namespace Emby.Server.Implementations.Library.Resolvers
     public class PhotoResolver : ItemResolver<Photo>
     {
         private readonly IImageProcessor _imageProcessor;
-        private readonly ILibraryManager _libraryManager;
+        private readonly NamingOptions _namingOptions;
+
         private static readonly HashSet<string> _ignoreFiles = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
             "folder",
@@ -28,10 +33,11 @@ namespace Emby.Server.Implementations.Library.Resolvers
             "default"
         };
 
-        public PhotoResolver(IImageProcessor imageProcessor, ILibraryManager libraryManager)
+
+        public PhotoResolver(IImageProcessor imageProcessor, NamingOptions namingOptions)
         {
             _imageProcessor = imageProcessor;
-            _libraryManager = libraryManager;
+            _namingOptions = namingOptions;
         }
 
         /// <summary>
@@ -47,7 +53,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 var collectionType = args.CollectionType;
 
                 if (string.Equals(collectionType, CollectionType.Photos, StringComparison.OrdinalIgnoreCase)
-                    || (string.Equals(collectionType, CollectionType.HomeVideos, StringComparison.OrdinalIgnoreCase) && args.GetLibraryOptions().EnablePhotos))
+                    || (string.Equals(collectionType, CollectionType.HomeVideos, StringComparison.OrdinalIgnoreCase) && args.LibraryOptions.EnablePhotos))
                 {
                     if (IsImageFile(args.Path, _imageProcessor))
                     {
@@ -58,7 +64,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
 
                         foreach (var file in files)
                         {
-                            if (IsOwnedByMedia(_libraryManager, file.FullName, filename))
+                            if (IsOwnedByMedia(_namingOptions, file.FullName, filename))
                             {
                                 return null;
                             }
@@ -75,17 +81,12 @@ namespace Emby.Server.Implementations.Library.Resolvers
             return null;
         }
 
-        internal static bool IsOwnedByMedia(ILibraryManager libraryManager, string file, string imageFilename)
+        internal static bool IsOwnedByMedia(NamingOptions namingOptions, string file, string imageFilename)
         {
-            if (libraryManager.IsVideoFile(file))
-            {
-                return IsOwnedByResolvedMedia(libraryManager, file, imageFilename);
-            }
-
-            return false;
+            return VideoResolver.IsVideoFile(file, namingOptions) && IsOwnedByResolvedMedia(file, imageFilename);
         }
 
-        internal static bool IsOwnedByResolvedMedia(ILibraryManager libraryManager, string file, string imageFilename)
+        internal static bool IsOwnedByResolvedMedia(string file, string imageFilename)
             => imageFilename.StartsWith(Path.GetFileNameWithoutExtension(file), StringComparison.OrdinalIgnoreCase);
 
         internal static bool IsImageFile(string path, IImageProcessor imageProcessor)
diff --git a/Emby.Server.Implementations/Library/Resolvers/PlaylistResolver.cs b/Emby.Server.Implementations/Library/Resolvers/PlaylistResolver.cs
index 5f051321f..8ce59717d 100644
--- a/Emby.Server.Implementations/Library/Resolvers/PlaylistResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/PlaylistResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -14,9 +16,10 @@ namespace Emby.Server.Implementations.Library.Resolvers
     /// <summary>
     /// <see cref="IItemResolver"/> for <see cref="Playlist"/> library items.
     /// </summary>
-    public class PlaylistResolver : FolderResolver<Playlist>
+    public class PlaylistResolver : GenericFolderResolver<Playlist>
     {
-        private string[] _musicPlaylistCollectionTypes = new string[] {
+        private string[] _musicPlaylistCollectionTypes =
+        {
             string.Empty,
             CollectionType.Music
         };
diff --git a/Emby.Server.Implementations/Library/Resolvers/SpecialFolderResolver.cs b/Emby.Server.Implementations/Library/Resolvers/SpecialFolderResolver.cs
index 99f304190..6bb999641 100644
--- a/Emby.Server.Implementations/Library/Resolvers/SpecialFolderResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/SpecialFolderResolver.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -11,7 +13,7 @@ using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
-    public class SpecialFolderResolver : FolderResolver<Folder>
+    public class SpecialFolderResolver : GenericFolderResolver<Folder>
     {
         private readonly IFileSystem _fileSystem;
         private readonly IServerApplicationPaths _appPaths;
@@ -65,7 +67,6 @@ namespace Emby.Server.Implementations.Library.Resolvers
             return args.FileSystemChildren
                 .Where(i =>
                 {
-
                     try
                     {
                         return !i.IsDirectory &&
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
index 9b4cd7a3d..f72da3617 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
@@ -1,5 +1,8 @@
+#nullable disable
+
 using System;
 using System.Linq;
+using Emby.Naming.Common;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
@@ -15,9 +18,9 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
         /// <summary>
         /// Initializes a new instance of the <see cref="EpisodeResolver"/> class.
         /// </summary>
-        /// <param name="libraryManager">The library manager.</param>
-        public EpisodeResolver(ILibraryManager libraryManager)
-            : base(libraryManager)
+        /// <param name="namingOptions">The naming options.</param>
+        public EpisodeResolver(NamingOptions namingOptions)
+            : base(namingOptions)
         {
         }
 
@@ -35,31 +38,23 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 return null;
             }
 
-            var season = parent as Season;
-
             // Just in case the user decided to nest episodes.
             // Not officially supported but in some cases we can handle it.
-            if (season == null)
-            {
-                season = parent.GetParents().OfType<Season>().FirstOrDefault();
-            }
+
+            var season = parent as Season ?? parent.GetParents().OfType<Season>().FirstOrDefault();
 
             // If the parent is a Season or Series and the parent is not an extras folder, then this is an Episode if the VideoResolver returns something
             // Also handle flat tv folders
             if ((season != null ||
                  string.Equals(args.GetCollectionType(), CollectionType.TvShows, StringComparison.OrdinalIgnoreCase) ||
                  args.HasParent<Series>())
-                && (parent is Series || !BaseItem.AllExtrasTypesFolderNames.Contains(parent.Name, StringComparer.OrdinalIgnoreCase)))
+                && (parent is Series || !BaseItem.AllExtrasTypesFolderNames.ContainsKey(parent.Name)))
             {
                 var episode = ResolveVideo<Episode>(args, false);
 
                 if (episode != null)
                 {
-                    var series = parent as Series;
-                    if (series == null)
-                    {
-                        series = parent.GetParents().OfType<Series>().FirstOrDefault();
-                    }
+                    var series = parent as Series ?? parent.GetParents().OfType<Series>().FirstOrDefault();
 
                     if (series != null)
                     {
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
index 3332e1806..ea4851458 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
@@ -1,4 +1,7 @@
+#nullable disable
+
 using System.Globalization;
+using Emby.Naming.Common;
 using Emby.Naming.TV;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
@@ -10,24 +13,24 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
     /// <summary>
     /// Class SeasonResolver.
     /// </summary>
-    public class SeasonResolver : FolderResolver<Season>
+    public class SeasonResolver : GenericFolderResolver<Season>
     {
-        private readonly ILibraryManager _libraryManager;
         private readonly ILocalizationManager _localization;
         private readonly ILogger<SeasonResolver> _logger;
+        private readonly NamingOptions _namingOptions;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="SeasonResolver"/> class.
         /// </summary>
-        /// <param name="libraryManager">The library manager.</param>
+        /// <param name="namingOptions">The naming options.</param>
         /// <param name="localization">The localization.</param>
         /// <param name="logger">The logger.</param>
         public SeasonResolver(
-            ILibraryManager libraryManager,
+            NamingOptions namingOptions,
             ILocalizationManager localization,
             ILogger<SeasonResolver> logger)
         {
-            _libraryManager = libraryManager;
+            _namingOptions = namingOptions;
             _localization = localization;
             _logger = logger;
         }
@@ -41,7 +44,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
         {
             if (args.Parent is Series series && args.IsDirectory)
             {
-                var namingOptions = ((LibraryManager)_libraryManager).GetNamingOptions();
+                var namingOptions = _namingOptions;
 
                 var path = args.Path;
 
@@ -63,18 +66,15 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
 
                     var episodeInfo = resolver.Resolve(testPath, true);
 
-                    if (episodeInfo != null)
+                    if (episodeInfo?.EpisodeNumber != null && episodeInfo.SeasonNumber.HasValue)
                     {
-                        if (episodeInfo.EpisodeNumber.HasValue && episodeInfo.SeasonNumber.HasValue)
-                        {
-                            _logger.LogDebug(
-                                "Found folder underneath series with episode number: {0}. Season {1}. Episode {2}",
-                                path,
-                                episodeInfo.SeasonNumber.Value,
-                                episodeInfo.EpisodeNumber.Value);
-
-                            return null;
-                        }
+                        _logger.LogDebug(
+                            "Found folder underneath series with episode number: {0}. Season {1}. Episode {2}",
+                            path,
+                            episodeInfo.SeasonNumber.Value,
+                            episodeInfo.EpisodeNumber.Value);
+
+                        return null;
                     }
                 }
 
@@ -88,7 +88,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                             CultureInfo.InvariantCulture,
                             _localization.GetLocalizedString("NameSeasonNumber"),
                             seasonNumber,
-                            args.GetLibraryOptions().PreferredMetadataLanguage);
+                            args.LibraryOptions.PreferredMetadataLanguage);
                 }
 
                 return season;
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
index 4a9d2cf8c..4e15acd18 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/SeriesResolver.cs
@@ -1,12 +1,18 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Linq;
+using Emby.Naming.Common;
 using Emby.Naming.TV;
+using Emby.Naming.Video;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Controller.Providers;
 using MediaBrowser.Controller.Resolvers;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
@@ -17,23 +23,20 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
     /// <summary>
     /// Class SeriesResolver.
     /// </summary>
-    public class SeriesResolver : FolderResolver<Series>
+    public class SeriesResolver : GenericFolderResolver<Series>
     {
-        private readonly IFileSystem _fileSystem;
         private readonly ILogger<SeriesResolver> _logger;
-        private readonly ILibraryManager _libraryManager;
+        private readonly NamingOptions _namingOptions;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="SeriesResolver"/> class.
         /// </summary>
-        /// <param name="fileSystem">The file system.</param>
         /// <param name="logger">The logger.</param>
-        /// <param name="libraryManager">The library manager.</param>
-        public SeriesResolver(IFileSystem fileSystem, ILogger<SeriesResolver> logger, ILibraryManager libraryManager)
+        /// <param name="namingOptions">The naming options.</param>
+        public SeriesResolver(ILogger<SeriesResolver> logger,  NamingOptions namingOptions)
         {
-            _fileSystem = fileSystem;
             _logger = logger;
-            _libraryManager = libraryManager;
+            _namingOptions = namingOptions;
         }
 
         /// <summary>
@@ -56,25 +59,19 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                     return null;
                 }
 
+                var seriesInfo = Naming.TV.SeriesResolver.Resolve(_namingOptions, args.Path);
+
                 var collectionType = args.GetCollectionType();
                 if (string.Equals(collectionType, CollectionType.TvShows, StringComparison.OrdinalIgnoreCase))
                 {
-                    // if (args.ContainsFileSystemEntryByName("tvshow.nfo"))
-                    //{
-                    //    return new Series
-                    //    {
-                    //        Path = args.Path,
-                    //        Name = Path.GetFileName(args.Path)
-                    //    };
-                    //}
-
-                    var configuredContentType = _libraryManager.GetConfiguredContentType(args.Path);
+                    // TODO refactor into separate class or something, this is copied from LibraryManager.GetConfiguredContentType
+                    var configuredContentType = args.GetConfiguredContentType();
                     if (!string.Equals(configuredContentType, CollectionType.TvShows, StringComparison.OrdinalIgnoreCase))
                     {
                         return new Series
                         {
                             Path = args.Path,
-                            Name = Path.GetFileName(args.Path)
+                            Name = seriesInfo.Name
                         };
                     }
                 }
@@ -91,7 +88,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                         return new Series
                         {
                             Path = args.Path,
-                            Name = Path.GetFileName(args.Path)
+                            Name = seriesInfo.Name
                         };
                     }
 
@@ -100,12 +97,12 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                         return null;
                     }
 
-                    if (IsSeriesFolder(args.Path, args.FileSystemChildren, args.DirectoryService, _fileSystem, _logger, _libraryManager, false))
+                    if (IsSeriesFolder(args.Path, args.FileSystemChildren, false))
                     {
                         return new Series
                         {
                             Path = args.Path,
-                            Name = Path.GetFileName(args.Path)
+                            Name = seriesInfo.Name
                         };
                     }
                 }
@@ -114,13 +111,9 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
             return null;
         }
 
-        public static bool IsSeriesFolder(
+        private bool IsSeriesFolder(
             string path,
             IEnumerable<FileSystemMetadata> fileSystemChildren,
-            IDirectoryService directoryService,
-            IFileSystem fileSystem,
-            ILogger<SeriesResolver> logger,
-            ILibraryManager libraryManager,
             bool isTvContentType)
         {
             foreach (var child in fileSystemChildren)
@@ -129,21 +122,21 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 {
                     if (IsSeasonFolder(child.FullName, isTvContentType))
                     {
-                        logger.LogDebug("{Path} is a series because of season folder {Dir}.", path, child.FullName);
+                        _logger.LogDebug("{Path} is a series because of season folder {Dir}.", path, child.FullName);
                         return true;
                     }
                 }
                 else
                 {
                     string fullName = child.FullName;
-                    if (libraryManager.IsVideoFile(fullName))
+                    if (VideoResolver.IsVideoFile(path, _namingOptions))
                     {
                         if (isTvContentType)
                         {
                             return true;
                         }
 
-                        var namingOptions = ((LibraryManager)libraryManager).GetNamingOptions();
+                        var namingOptions = _namingOptions;
 
                         var episodeResolver = new Naming.TV.EpisodeResolver(namingOptions);
 
@@ -156,7 +149,7 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                 }
             }
 
-            logger.LogDebug("{Path} is not a series folder.", path);
+            _logger.LogDebug("{Path} is not a series folder.", path);
             return false;
         }