Merge remote-tracking branch 'upstream/master' into search-rebased

7 files changed, 464 insertions, 74 deletions

diff --git a/Emby.Server.Implementations/Library/DotIgnoreIgnoreRule.cs b/Emby.Server.Implementations/Library/DotIgnoreIgnoreRule.cs
index ef5d24c70f..023c1e8915 100644
--- a/Emby.Server.Implementations/Library/DotIgnoreIgnoreRule.cs
+++ b/Emby.Server.Implementations/Library/DotIgnoreIgnoreRule.cs
@@ -1,6 +1,8 @@
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Text.RegularExpressions;
+using BitFaster.Caching.Lru;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Resolvers;
@@ -15,22 +17,36 @@ public class DotIgnoreIgnoreRule : IResolverIgnoreRule
 {
     private static readonly bool IsWindows = OperatingSystem.IsWindows();
 
-    private static FileInfo? FindIgnoreFile(DirectoryInfo directory)
-    {
-        for (var current = directory; current is not null; current = current.Parent)
-        {
-            var ignorePath = Path.Join(current.FullName, ".ignore");
-            if (File.Exists(ignorePath))
-            {
-                return new FileInfo(ignorePath);
-            }
-        }
+    private readonly FastConcurrentLru<string, IgnoreFileCacheEntry> _directoryCache;
+    private readonly FastConcurrentLru<string, ParsedIgnoreCacheEntry> _rulesCache;
 
-        return null;
+    /// <summary>
+    /// Initializes a new instance of the <see cref="DotIgnoreIgnoreRule"/> class.
+    /// </summary>
+    public DotIgnoreIgnoreRule()
+    {
+        var cacheSize = Math.Max(100, Environment.ProcessorCount * 100);
+        _directoryCache = new FastConcurrentLru<string, IgnoreFileCacheEntry>(
+            Environment.ProcessorCount,
+            cacheSize,
+            StringComparer.Ordinal);
+        _rulesCache = new FastConcurrentLru<string, ParsedIgnoreCacheEntry>(
+            Environment.ProcessorCount,
+            Math.Max(32, cacheSize / 4),
+            StringComparer.Ordinal);
     }
 
     /// <inheritdoc />
-    public bool ShouldIgnore(FileSystemMetadata fileInfo, BaseItem? parent) => IsIgnored(fileInfo, parent);
+    public bool ShouldIgnore(FileSystemMetadata fileInfo, BaseItem? parent) => IsIgnoredInternal(fileInfo, parent);
+
+    /// <summary>
+    /// Clears the directory lookup cache. The parsed rules cache is not cleared
+    /// as it validates file modification time on each access.
+    /// </summary>
+    public void ClearDirectoryCache()
+    {
+        _directoryCache.Clear();
+    }
 
     /// <summary>
     /// Checks whether or not the file is ignored.
@@ -38,40 +54,38 @@ public class DotIgnoreIgnoreRule : IResolverIgnoreRule
     /// <param name="fileInfo">The file information.</param>
     /// <param name="parent">The parent BaseItem.</param>
     /// <returns>True if the file should be ignored.</returns>
-    public static bool IsIgnored(FileSystemMetadata fileInfo, BaseItem? parent)
+    public bool IsIgnoredInternal(FileSystemMetadata fileInfo, BaseItem? parent)
     {
         var searchDirectory = fileInfo.IsDirectory
-            ? new DirectoryInfo(fileInfo.FullName)
-            : new DirectoryInfo(Path.GetDirectoryName(fileInfo.FullName) ?? string.Empty);
+            ? fileInfo.FullName
+            : Path.GetDirectoryName(fileInfo.FullName);
 
-        if (string.IsNullOrEmpty(searchDirectory.FullName))
+        if (string.IsNullOrEmpty(searchDirectory))
         {
             return false;
         }
 
-        var ignoreFile = FindIgnoreFile(searchDirectory);
+        var ignoreFile = FindIgnoreFileCached(searchDirectory);
         if (ignoreFile is null)
         {
             return false;
         }
 
-        // Fast path in case the ignore files isn't a symlink and is empty
-        if (ignoreFile.LinkTarget is null && ignoreFile.Length == 0)
+        var parsedEntry = GetParsedRules(ignoreFile);
+        if (parsedEntry is null)
         {
-            // Ignore directory if we just have the file
-            return true;
+            // File was deleted after we cached the path - clear the directory cache entry and return false
+            _directoryCache.TryRemove(searchDirectory, out _);
+            return false;
         }
 
-        var content = GetFileContent(ignoreFile);
-        return string.IsNullOrWhiteSpace(content)
-            || CheckIgnoreRules(fileInfo.FullName, content, fileInfo.IsDirectory);
-    }
+        // Empty file means ignore everything
+        if (parsedEntry.IsEmpty)
+        {
+            return true;
+        }
 
-    private static bool CheckIgnoreRules(string path, string ignoreFileContent, bool isDirectory)
-    {
-        // If file has content, base ignoring off the content .gitignore-style rules
-        var rules = ignoreFileContent.Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
-        return CheckIgnoreRules(path, rules, isDirectory);
+        return parsedEntry.Rules.IsIgnored(GetPathToCheck(fileInfo.FullName, fileInfo.IsDirectory));
     }
 
     /// <summary>
@@ -117,8 +131,8 @@ public class DotIgnoreIgnoreRule : IResolverIgnoreRule
             return true;
         }
 
-         // Mitigate the problem of the Ignore library not handling Windows paths correctly.
-         // See https://github.com/jellyfin/jellyfin/issues/15484
+        // Mitigate the problem of the Ignore library not handling Windows paths correctly.
+        // See https://github.com/jellyfin/jellyfin/issues/15484
         var pathToCheck = normalizePath ? path.NormalizePath('/') : path;
 
         // Add trailing slash for directories to match "folder/"
@@ -130,11 +144,196 @@ public class DotIgnoreIgnoreRule : IResolverIgnoreRule
         return ignore.IsIgnored(pathToCheck);
     }
 
-    private static string GetFileContent(FileInfo ignoreFile)
+    private FileInfo? FindIgnoreFileCached(string directory)
+    {
+        // Check if we have a cached result for this directory
+        if (_directoryCache.TryGet(directory, out var cached))
+        {
+            return cached.IgnoreFileDirectory is null
+                ? null
+                : new FileInfo(Path.Join(cached.IgnoreFileDirectory, ".ignore"));
+        }
+
+        DirectoryInfo startDir;
+        try
+        {
+            startDir = new DirectoryInfo(directory);
+        }
+        catch (ArgumentException)
+        {
+            return null;
+        }
+
+        // Walk up the directory tree to find .ignore file using DirectoryInfo.Parent
+        var checkedDirs = new List<string> { directory };
+
+        for (var current = startDir; current is not null; current = current.Parent)
+        {
+            var currentPath = current.FullName;
+
+            // Check if this intermediate directory is cached
+            if (current != startDir && _directoryCache.TryGet(currentPath, out var parentCached))
+            {
+                // Cache the result for all directories we checked
+                var entry = new IgnoreFileCacheEntry(parentCached.IgnoreFileDirectory);
+                foreach (var dir in checkedDirs)
+                {
+                    _directoryCache.AddOrUpdate(dir, entry);
+                }
+
+                return parentCached.IgnoreFileDirectory is null
+                    ? null
+                    : new FileInfo(Path.Join(parentCached.IgnoreFileDirectory, ".ignore"));
+            }
+
+            var ignoreFile = new FileInfo(Path.Join(currentPath, ".ignore"));
+            if (ignoreFile.Exists)
+            {
+                // Cache for all directories we checked
+                var entry = new IgnoreFileCacheEntry(currentPath);
+                foreach (var dir in checkedDirs)
+                {
+                    _directoryCache.AddOrUpdate(dir, entry);
+                }
+
+                return ignoreFile;
+            }
+
+            if (current != startDir)
+            {
+                checkedDirs.Add(currentPath);
+            }
+        }
+
+        // No .ignore file found - cache null result for all directories
+        var nullEntry = new IgnoreFileCacheEntry((string?)null);
+        foreach (var dir in checkedDirs)
+        {
+            _directoryCache.AddOrUpdate(dir, nullEntry);
+        }
+
+        return null;
+    }
+
+    private ParsedIgnoreCacheEntry? GetParsedRules(FileInfo ignoreFile)
+    {
+        if (!ignoreFile.Exists)
+        {
+            _rulesCache.TryRemove(ignoreFile.FullName, out _);
+            return null;
+        }
+
+        var lastModified = ignoreFile.LastWriteTimeUtc;
+        var fileLength = ignoreFile.Length;
+        var key = ignoreFile.FullName;
+
+        // Check cache
+        if (_rulesCache.TryGet(key, out var cached))
+        {
+            if (cached.FileLastModified == lastModified && cached.FileLength == fileLength)
+            {
+                return cached;
+            }
+
+            // Stale - need to reparse
+            _rulesCache.TryRemove(key, out _);
+        }
+
+        // Parse the file
+        var parsedEntry = ParseIgnoreFile(ignoreFile, lastModified, fileLength);
+        _rulesCache.AddOrUpdate(key, parsedEntry);
+        return parsedEntry;
+    }
+
+    private static ParsedIgnoreCacheEntry ParseIgnoreFile(FileInfo ignoreFile, DateTime lastModified, long fileLength)
     {
-        ignoreFile = FileSystemHelper.ResolveLinkTarget(ignoreFile, returnFinalTarget: true) ?? ignoreFile;
-        return ignoreFile.Exists
-            ? File.ReadAllText(ignoreFile.FullName)
-            : string.Empty;
+        if (ignoreFile.LinkTarget is null && fileLength == 0)
+        {
+            return new ParsedIgnoreCacheEntry
+            {
+                Rules = new Ignore.Ignore(),
+                FileLastModified = lastModified,
+                FileLength = fileLength,
+                IsEmpty = true
+            };
+        }
+
+        // Resolve symlinks
+        var resolvedFile = FileSystemHelper.ResolveLinkTarget(ignoreFile, returnFinalTarget: true) ?? ignoreFile;
+        if (!resolvedFile.Exists)
+        {
+            return new ParsedIgnoreCacheEntry
+            {
+                Rules = new Ignore.Ignore(),
+                FileLastModified = lastModified,
+                FileLength = fileLength,
+                IsEmpty = true
+            };
+        }
+
+        var content = File.ReadAllText(resolvedFile.FullName);
+        if (string.IsNullOrWhiteSpace(content))
+        {
+            return new ParsedIgnoreCacheEntry
+            {
+                Rules = new Ignore.Ignore(),
+                FileLastModified = lastModified,
+                FileLength = fileLength,
+                IsEmpty = true
+            };
+        }
+
+        var rules = content.Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+        var ignore = new Ignore.Ignore();
+        var validRulesAdded = 0;
+
+        foreach (var rule in rules)
+        {
+            try
+            {
+                ignore.Add(rule);
+                validRulesAdded++;
+            }
+            catch (RegexParseException)
+            {
+                // Ignore invalid patterns
+            }
+        }
+
+        // No valid rules means treat as empty (ignore all)
+        return new ParsedIgnoreCacheEntry
+        {
+            Rules = ignore,
+            FileLastModified = lastModified,
+            FileLength = fileLength,
+            IsEmpty = validRulesAdded == 0
+        };
+    }
+
+    private static string GetPathToCheck(string path, bool isDirectory)
+    {
+        // Normalize Windows paths
+        var pathToCheck = IsWindows ? path.NormalizePath('/') : path;
+
+        // Add trailing slash for directories to match "folder/"
+        if (isDirectory)
+        {
+            pathToCheck = string.Concat(pathToCheck.AsSpan().TrimEnd('/'), "/");
+        }
+
+        return pathToCheck;
+    }
+
+    private readonly record struct IgnoreFileCacheEntry(string? IgnoreFileDirectory);
+
+    private sealed class ParsedIgnoreCacheEntry
+    {
+        public required Ignore.Ignore Rules { get; init; }
+
+        public required DateTime FileLastModified { get; init; }
+
+        public required long FileLength { get; init; }
+
+        public required bool IsEmpty { get; init; }
     }
 }
diff --git a/Emby.Server.Implementations/Library/LibraryManager.cs b/Emby.Server.Implementations/Library/LibraryManager.cs
index 2bcb10e9e1..11f1496086 100644
--- a/Emby.Server.Implementations/Library/LibraryManager.cs
+++ b/Emby.Server.Implementations/Library/LibraryManager.cs
@@ -30,11 +30,13 @@ using MediaBrowser.Controller.Drawing;
 using MediaBrowser.Controller.Dto;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Entities.Audio;
+using MediaBrowser.Controller.Entities.Movies;
 using MediaBrowser.Controller.IO;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Controller.MediaEncoding;
 using MediaBrowser.Controller.Persistence;
+using MediaBrowser.Controller.Playlists;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Controller.Resolvers;
 using MediaBrowser.Controller.Sorting;
@@ -84,6 +86,7 @@ namespace Emby.Server.Implementations.Library
         private readonly ExtraResolver _extraResolver;
         private readonly IPathManager _pathManager;
         private readonly FastConcurrentLru<Guid, BaseItem> _cache;
+        private readonly DotIgnoreIgnoreRule _dotIgnoreIgnoreRule;
 
         /// <summary>
         /// The _root folder sync lock.
@@ -125,6 +128,7 @@ namespace Emby.Server.Implementations.Library
         /// <param name="directoryService">The directory service.</param>
         /// <param name="peopleRepository">The people repository.</param>
         /// <param name="pathManager">The path manager.</param>
+        /// <param name="dotIgnoreIgnoreRule">The .ignore rule handler.</param>
         public LibraryManager(
             IServerApplicationHost appHost,
             ILoggerFactory loggerFactory,
@@ -146,7 +150,8 @@ namespace Emby.Server.Implementations.Library
             NamingOptions namingOptions,
             IDirectoryService directoryService,
             IPeopleRepository peopleRepository,
-            IPathManager pathManager)
+            IPathManager pathManager,
+            DotIgnoreIgnoreRule dotIgnoreIgnoreRule)
         {
             _appHost = appHost;
             _logger = loggerFactory.CreateLogger<LibraryManager>();
@@ -171,6 +176,7 @@ namespace Emby.Server.Implementations.Library
             _namingOptions = namingOptions;
             _peopleRepository = peopleRepository;
             _pathManager = pathManager;
+            _dotIgnoreIgnoreRule = dotIgnoreIgnoreRule;
             _extraResolver = new ExtraResolver(loggerFactory.CreateLogger<ExtraResolver>(), namingOptions, directoryService);
 
             _configurationManager.ConfigurationUpdated += ConfigurationUpdated;
@@ -1303,6 +1309,7 @@ namespace Emby.Server.Implementations.Library
         public async Task ValidateMediaLibraryInternal(IProgress<double> progress, CancellationToken cancellationToken)
         {
             IsScanRunning = true;
+            ClearIgnoreRuleCache();
             LibraryMonitor.Stop();
 
             try
@@ -1311,6 +1318,7 @@ namespace Emby.Server.Implementations.Library
             }
             finally
             {
+                ClearIgnoreRuleCache();
                 LibraryMonitor.Start();
                 IsScanRunning = false;
             }
@@ -1318,6 +1326,7 @@ namespace Emby.Server.Implementations.Library
 
         public async Task ValidateTopLibraryFolders(CancellationToken cancellationToken, bool removeRoot = false)
         {
+            ClearIgnoreRuleCache();
             RootFolder.Children = null;
             await RootFolder.RefreshMetadata(cancellationToken).ConfigureAwait(false);
 
@@ -1360,6 +1369,14 @@ namespace Emby.Server.Implementations.Library
             {
                 _persistenceService.DeleteItem(toDelete.ToArray());
             }
+
+            ClearIgnoreRuleCache();
+        }
+
+        /// <inheritdoc />
+        public void ClearIgnoreRuleCache()
+        {
+            _dotIgnoreIgnoreRule.ClearDirectoryCache();
         }
 
         private async Task PerformLibraryValidation(IProgress<double> progress, CancellationToken cancellationToken)
@@ -1881,6 +1898,25 @@ namespace Emby.Server.Implementations.Library
                     query.TopParentIds = [Guid.NewGuid()];
                 }
             }
+            else if (parents.Count == 1 && parents.First() is Folder folder
+                && (folder is Playlist || folder is BoxSet)
+                && folder.LinkedChildren.Length > 0)
+            {
+                // Playlists and BoxSets store their contents in LinkedChildren and never
+                // populate AncestorIds for those items, so a recursive AncestorIds query
+                // would return zero rows. Resolve to the linked child IDs up front and
+                // route through the existing indexed ItemIds filter.
+                query.ItemIds = folder.LinkedChildren
+                    .Where(lc => lc.ItemId.HasValue && !lc.ItemId.Value.IsEmpty())
+                    .Select(lc => lc.ItemId!.Value)
+                    .ToArray();
+
+                // Empty linked-children should still return empty rather than scanning everything.
+                if (query.ItemIds.Length == 0)
+                {
+                    query.ItemIds = [Guid.NewGuid()];
+                }
+            }
             else
             {
                 // We need to be able to query from any arbitrary ancestor up the tree
@@ -3161,7 +3197,7 @@ namespace Emby.Server.Implementations.Library
         public IEnumerable<BaseItem> FindExtras(BaseItem owner, IReadOnlyList<FileSystemMetadata> fileSystemChildren, IDirectoryService directoryService)
         {
             // Apply .ignore rules
-            var filtered = fileSystemChildren.Where(c => !DotIgnoreIgnoreRule.IsIgnored(c, owner)).ToList();
+            var filtered = fileSystemChildren.Where(c => !_dotIgnoreIgnoreRule.ShouldIgnore(c, owner)).ToList();
             var isFolder = owner.IsFolder || (owner is Video video && (video.VideoType == VideoType.BluRay || video.VideoType == VideoType.Dvd));
             var ownerVideoInfo = VideoResolver.Resolve(owner.Path, isFolder, _namingOptions, libraryRoot: owner.ContainingFolderPath);
             if (ownerVideoInfo is null)
@@ -3253,7 +3289,7 @@ namespace Emby.Server.Implementations.Library
 
         public IReadOnlyList<PersonInfo> GetPeople(InternalPeopleQuery query)
         {
-            return _peopleRepository.GetPeople(query);
+            return _peopleRepository.GetPeople(query).Items;
         }
 
         public IReadOnlyList<PersonInfo> GetPeople(BaseItem item)
@@ -3274,24 +3310,33 @@ namespace Emby.Server.Implementations.Library
             return [];
         }
 
-        public IReadOnlyList<Person> GetPeopleItems(InternalPeopleQuery query)
+        public QueryResult<BaseItem> GetPeopleItems(InternalPeopleQuery query)
         {
-            return _peopleRepository.GetPeopleNames(query)
-            .Select(i =>
-            {
-                try
+            var queryResult = _peopleRepository.GetPeople(query);
+            var baseItems = queryResult.Items.Select(i =>
                 {
-                    return GetPerson(i);
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogError(ex, "Error getting person");
-                    return null;
-                }
-            })
-            .Where(i => i is not null)
-            .Where(i => query.User is null || i!.IsVisible(query.User))
-            .ToList()!; // null values are filtered out
+                    try
+                    {
+                        return GetPerson(i.Name);
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.LogError(ex, "error retrieving BaseItem for person: {0}", i.Name);
+                        return null;
+                    }
+                })
+                .Where(i => i is not null)
+                .Where(i => query.User is null || i!.IsVisible(query.User))
+                .OfType<BaseItem>()
+                .ToList()
+                .AsReadOnly();
+
+            return new QueryResult<BaseItem>
+            {
+                StartIndex = queryResult.StartIndex,
+                TotalRecordCount = queryResult.TotalRecordCount,
+                Items = baseItems,
+            };
         }
 
         public IReadOnlyList<string> GetPeopleNames(InternalPeopleQuery query)
diff --git a/Emby.Server.Implementations/Library/MediaSourceManager.cs b/Emby.Server.Implementations/Library/MediaSourceManager.cs
index c667fb0600..fdb4c7328b 100644
--- a/Emby.Server.Implementations/Library/MediaSourceManager.cs
+++ b/Emby.Server.Implementations/Library/MediaSourceManager.cs
@@ -23,6 +23,7 @@ using MediaBrowser.Common.Configuration;
 using MediaBrowser.Common.Extensions;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Controller.MediaEncoding;
@@ -423,7 +424,7 @@ namespace Emby.Server.Implementations.Library
             MediaStreamSelector.SetSubtitleStreamScores(source.MediaStreams, preferredSubs, user.SubtitleMode, audioLanguage);
         }
 
-        private void SetDefaultAudioStreamIndex(MediaSourceInfo source, UserItemData userData, User user, bool allowRememberingSelection)
+        private void SetDefaultAudioStreamIndex(MediaSourceInfo source, UserItemData userData, User user, bool allowRememberingSelection, string originalLanguage)
         {
             if (userData is not null && userData.AudioStreamIndex.HasValue && user.RememberAudioSelections && allowRememberingSelection)
             {
@@ -437,7 +438,42 @@ namespace Emby.Server.Implementations.Library
                 }
             }
 
-            var preferredAudio = NormalizeLanguage(user.AudioLanguagePreference);
+            if (string.Equals(user.AudioLanguagePreference, "OriginalLanguage", StringComparison.OrdinalIgnoreCase))
+            {
+                originalLanguage = !string.IsNullOrWhiteSpace(originalLanguage)
+                    ? originalLanguage.Split(',').FirstOrDefault()
+                    : null;
+
+                if (user.PlayDefaultAudioTrack)
+                {
+                    source.DefaultAudioStreamIndex = MediaStreamSelector.GetDefaultAudioStreamIndex(
+                        source.MediaStreams,
+                        NormalizeLanguage(originalLanguage),
+                        user.PlayDefaultAudioTrack);
+                    return;
+                }
+
+                var originalIndex = source.MediaStreams.FindIndex(i => i.Type == MediaStreamType.Audio && i.IsOriginal);
+
+                if (!string.IsNullOrWhiteSpace(originalLanguage) && originalIndex != -1)
+                {
+                    var mediaLanguageOriginal = source.MediaStreams[originalIndex].Language;
+                    if (NormalizeLanguage(mediaLanguageOriginal).Contains(NormalizeLanguage(originalLanguage).FirstOrDefault()))
+                    {
+                        source.DefaultAudioStreamIndex = originalIndex;
+                        return;
+                    }
+                }
+                else if (originalIndex != -1)
+                {
+                    source.DefaultAudioStreamIndex = originalIndex;
+                    return;
+                }
+            }
+
+            var preferredAudio = string.Equals(user.AudioLanguagePreference, "OriginalLanguage", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(originalLanguage)
+                ? NormalizeLanguage(originalLanguage)
+                : NormalizeLanguage(user.AudioLanguagePreference);
 
             source.DefaultAudioStreamIndex = MediaStreamSelector.GetDefaultAudioStreamIndex(source.MediaStreams, preferredAudio, user.PlayDefaultAudioTrack);
             if (user.PlayDefaultAudioTrack)
@@ -462,7 +498,19 @@ namespace Emby.Server.Implementations.Library
 
                 var allowRememberingSelection = item is null || item.EnableRememberingTrackSelections;
 
-                SetDefaultAudioStreamIndex(source, userData, user, allowRememberingSelection);
+                var originalLanguage = item?.OriginalLanguage ?? item switch
+                {
+                    Episode episode => episode.Series.OriginalLanguage,
+                    Video video => video.GetOwner() switch
+                    {
+                        Episode ownerEpisode => ownerEpisode.OriginalLanguage ?? ownerEpisode.Series.OriginalLanguage,
+                        BaseItem owner => owner.OriginalLanguage,
+                        null => null
+                    },
+                    _ => null
+                };
+
+                SetDefaultAudioStreamIndex(source, userData, user, allowRememberingSelection, originalLanguage);
                 SetDefaultSubtitleStreamIndex(source, userData, user, allowRememberingSelection);
             }
             else if (mediaType == MediaType.Audio)
diff --git a/Emby.Server.Implementations/Library/PathExtensions.cs b/Emby.Server.Implementations/Library/PathExtensions.cs
index fc63251ad0..cfa3e7c31d 100644
--- a/Emby.Server.Implementations/Library/PathExtensions.cs
+++ b/Emby.Server.Implementations/Library/PathExtensions.cs
@@ -70,6 +70,16 @@ namespace Emby.Server.Implementations.Library
                 return match ? imdbId.ToString() : null;
             }
 
+            // Allow tmdb as an alias for tmdbid
+            if (attribute.Equals("tmdbid", StringComparison.OrdinalIgnoreCase))
+            {
+                var tmdbValue = str.GetAttributeValue("tmdb");
+                if (tmdbValue is not null)
+                {
+                    return tmdbValue;
+                }
+            }
+
             return null;
         }
 
diff --git a/Emby.Server.Implementations/Library/PathManager.cs b/Emby.Server.Implementations/Library/PathManager.cs
index a9b7a1274b..ef5edb9afa 100644
--- a/Emby.Server.Implementations/Library/PathManager.cs
+++ b/Emby.Server.Implementations/Library/PathManager.cs
@@ -6,6 +6,7 @@ using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.IO;
+using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.Library;
 
@@ -14,18 +15,22 @@ namespace Emby.Server.Implementations.Library;
 /// </summary>
 public class PathManager : IPathManager
 {
+    private readonly ILogger<PathManager> _logger;
     private readonly IServerConfigurationManager _config;
     private readonly IApplicationPaths _appPaths;
 
     /// <summary>
     /// Initializes a new instance of the <see cref="PathManager"/> class.
     /// </summary>
+    /// <param name="logger">The logger.</param>
     /// <param name="config">The server configuration manager.</param>
     /// <param name="appPaths">The application paths.</param>
     public PathManager(
+        ILogger<PathManager> logger,
         IServerConfigurationManager config,
         IApplicationPaths appPaths)
     {
+        _logger = logger;
         _config = config;
         _appPaths = appPaths;
     }
@@ -35,31 +40,43 @@ public class PathManager : IPathManager
     private string AttachmentCachePath => Path.Combine(_appPaths.DataPath, "attachments");
 
     /// <inheritdoc />
-    public string GetAttachmentPath(string mediaSourceId, string fileName)
+    public string? GetAttachmentPath(string mediaSourceId, string fileName)
     {
-        return Path.Combine(GetAttachmentFolderPath(mediaSourceId), fileName);
+        var folder = GetAttachmentFolderPath(mediaSourceId);
+        return folder is null ? null : Path.Combine(folder, fileName);
     }
 
     /// <inheritdoc />
-    public string GetAttachmentFolderPath(string mediaSourceId)
+    public string? GetAttachmentFolderPath(string mediaSourceId)
     {
-        var id = Guid.Parse(mediaSourceId).ToString("D", CultureInfo.InvariantCulture).AsSpan();
+        if (!Guid.TryParse(mediaSourceId, out var parsed))
+        {
+            _logger.LogDebug("MediaSource Id '{MediaSourceId}' is not a GUID; no on-disk attachment folder.", mediaSourceId);
+            return null;
+        }
 
+        var id = parsed.ToString("D", CultureInfo.InvariantCulture).AsSpan();
         return Path.Join(AttachmentCachePath, id[..2], id);
     }
 
     /// <inheritdoc />
-    public string GetSubtitleFolderPath(string mediaSourceId)
+    public string? GetSubtitleFolderPath(string mediaSourceId)
     {
-        var id = Guid.Parse(mediaSourceId).ToString("D", CultureInfo.InvariantCulture).AsSpan();
+        if (!Guid.TryParse(mediaSourceId, out var parsed))
+        {
+            _logger.LogDebug("MediaSource Id '{MediaSourceId}' is not a GUID; no on-disk subtitle folder.", mediaSourceId);
+            return null;
+        }
 
+        var id = parsed.ToString("D", CultureInfo.InvariantCulture).AsSpan();
         return Path.Join(SubtitleCachePath, id[..2], id);
     }
 
     /// <inheritdoc />
-    public string GetSubtitlePath(string mediaSourceId, int streamIndex, string extension)
+    public string? GetSubtitlePath(string mediaSourceId, int streamIndex, string extension)
     {
-        return Path.Combine(GetSubtitleFolderPath(mediaSourceId), streamIndex.ToString(CultureInfo.InvariantCulture) + extension);
+        var folder = GetSubtitleFolderPath(mediaSourceId);
+        return folder is null ? null : Path.Combine(folder, streamIndex.ToString(CultureInfo.InvariantCulture) + extension);
     }
 
     /// <inheritdoc />
@@ -90,12 +107,23 @@ public class PathManager : IPathManager
     public IReadOnlyList<string> GetExtractedDataPaths(BaseItem item)
     {
         var mediaSourceId = item.Id.ToString("N", CultureInfo.InvariantCulture);
-        return [
-            GetAttachmentFolderPath(mediaSourceId),
-            GetSubtitleFolderPath(mediaSourceId),
-            GetTrickplayDirectory(item, false),
-            GetTrickplayDirectory(item, true),
-            GetChapterImageFolderPath(item)
-        ];
+        List<string> paths = [];
+        var attachmentFolder = GetAttachmentFolderPath(mediaSourceId);
+        if (attachmentFolder is not null)
+        {
+            paths.Add(attachmentFolder);
+        }
+
+        var subtitleFolder = GetSubtitleFolderPath(mediaSourceId);
+        if (subtitleFolder is not null)
+        {
+            paths.Add(subtitleFolder);
+        }
+
+        paths.Add(GetTrickplayDirectory(item, false));
+        paths.Add(GetTrickplayDirectory(item, true));
+        paths.Add(GetChapterImageFolderPath(item));
+
+        return paths;
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
index 5fd23c9f50..85bf20cc2a 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs
@@ -1,8 +1,10 @@
 #nullable disable
 
 using System;
+using System.IO;
 using System.Linq;
 using Emby.Naming.Common;
+using Emby.Server.Implementations.Library;
 using Jellyfin.Data.Enums;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
@@ -81,10 +83,34 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                     episode.ParentIndexNumber = 1;
                 }
 
+                SetProviderIdFromPath(episode, args.Path);
+
                 return episode;
             }
 
             return null;
         }
+
+        /// <summary>
+        /// Sets provider ids from the episode file name.
+        /// </summary>
+        /// <param name="item">The episode.</param>
+        /// <param name="path">The episode file path.</param>
+        private static void SetProviderIdFromPath(Episode item, string path)
+        {
+            var justName = Path.GetFileNameWithoutExtension(path.AsSpan());
+
+            var imdbId = justName.GetAttributeValue("imdbid");
+            item.TrySetProviderId(MetadataProvider.Imdb, imdbId);
+
+            var tvdbId = justName.GetAttributeValue("tvdbid");
+            item.TrySetProviderId(MetadataProvider.Tvdb, tvdbId);
+
+            var tvmazeId = justName.GetAttributeValue("tvmazeid");
+            item.TrySetProviderId(MetadataProvider.TvMaze, tvmazeId);
+
+            var tmdbId = justName.GetAttributeValue("tmdbid");
+            item.TrySetProviderId(MetadataProvider.Tmdb, tmdbId);
+        }
     }
 }
diff --git a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
index 6cb63a28a2..6e9a38fd34 100644
--- a/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
+++ b/Emby.Server.Implementations/Library/Resolvers/TV/SeasonResolver.cs
@@ -1,10 +1,15 @@
 #nullable disable
 
+using System;
 using System.Globalization;
+using System.IO;
+using System.Linq;
 using Emby.Naming.Common;
 using Emby.Naming.TV;
+using Emby.Server.Implementations.Library;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.Globalization;
 using Microsoft.Extensions.Logging;
 
@@ -77,6 +82,14 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
 
                         return null;
                     }
+
+                    var hasAnyVideo = Directory.EnumerateFiles(path, "*", SearchOption.AllDirectories)
+                        .Any(file => _namingOptions.VideoFileExtensions.Contains(Path.GetExtension(file)));
+
+                    if (!hasAnyVideo)
+                    {
+                        return null;
+                    }
                 }
 
                 if (season.IndexNumber.HasValue && string.IsNullOrEmpty(season.Name))
@@ -91,10 +104,31 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
                             args.LibraryOptions.PreferredMetadataLanguage);
                 }
 
+                SetProviderIdFromPath(season, path);
+
                 return season;
             }
 
             return null;
         }
+
+        /// <summary>
+        /// Sets provider ids from the season folder name.
+        /// </summary>
+        /// <param name="item">The season.</param>
+        /// <param name="path">The season folder path.</param>
+        private static void SetProviderIdFromPath(Season item, string path)
+        {
+            var justName = Path.GetFileName(path.AsSpan());
+
+            var tvdbId = justName.GetAttributeValue("tvdbid");
+            item.TrySetProviderId(MetadataProvider.Tvdb, tvdbId);
+
+            var tvmazeId = justName.GetAttributeValue("tvmazeid");
+            item.TrySetProviderId(MetadataProvider.TvMaze, tvmazeId);
+
+            var tmdbId = justName.GetAttributeValue("tmdbid");
+            item.TrySetProviderId(MetadataProvider.Tmdb, tmdbId);
+        }
     }
 }