Removed some unused fields

BDInfo/BDROM.cs

@@ -165,7 +165,7 @@ namespace BDInfo
                 foreach (var file in files)
                 {
                     PlaylistFiles.Add(
-                        file.Name.ToUpper(), new TSPlaylistFile(this, file, _fileSystem));
+                        file.Name.ToUpper(), new TSPlaylistFile(this, file));
                 }
             }
 
@@ -185,7 +185,7 @@ namespace BDInfo
                 foreach (var file in files)
                 {
                     StreamClipFiles.Add(
-                        file.Name.ToUpper(), new TSStreamClipFile(file, _fileSystem));
+                        file.Name.ToUpper(), new TSStreamClipFile(file));
                 }
             }
 

BDInfo/TSPlaylistFile.cs

@@ -28,7 +28,6 @@ namespace BDInfo
 {
     public class TSPlaylistFile
     {
-        private readonly IFileSystem _fileSystem;
         private FileSystemMetadata FileInfo = null;
         public string FileType = null;
         public bool IsInitialized = false;
@@ -64,21 +63,19 @@ namespace BDInfo
             new List<TSGraphicsStream>();
 
         public TSPlaylistFile(BDROM bdrom,
-            FileSystemMetadata fileInfo, IFileSystem fileSystem)
+            FileSystemMetadata fileInfo)
         {
             BDROM = bdrom;
             FileInfo = fileInfo;
-            _fileSystem = fileSystem;
             Name = fileInfo.Name.ToUpper();
         }
 
         public TSPlaylistFile(BDROM bdrom,
             string name,
-            List<TSStreamClip> clips, IFileSystem fileSystem)
+            List<TSStreamClip> clips)
         {
             BDROM = bdrom;
             Name = name;
-            _fileSystem = fileSystem;
             IsCustom = true;
             foreach (var clip in clips)
             {

BDInfo/TSStreamClipFile.cs

@@ -28,7 +28,6 @@ namespace BDInfo
 {
     public class TSStreamClipFile
     {
-        private readonly IFileSystem _fileSystem;
         public FileSystemMetadata FileInfo = null;
         public string FileType = null;
         public bool IsValid = false;
@@ -37,10 +36,9 @@ namespace BDInfo
         public Dictionary<ushort, TSStream> Streams =
             new Dictionary<ushort, TSStream>();
 
-        public TSStreamClipFile(FileSystemMetadata fileInfo, IFileSystem fileSystem)
+        public TSStreamClipFile(FileSystemMetadata fileInfo)
         {
             FileInfo = fileInfo;
-            _fileSystem = fileSystem;
             Name = fileInfo.Name.ToUpper();
         }
 

Emby.IsoMounting/IsoMounter/LinuxIsoManager.cs

@@ -19,7 +19,6 @@ namespace IsoMounter
 
         private readonly IEnvironmentInfo EnvironmentInfo;
         private readonly bool ExecutablesAvailable;
-        private readonly IFileSystem FileSystem;
         private readonly ILogger _logger;
         private readonly string MountCommand;
         private readonly string MountPointRoot;
@@ -31,11 +30,10 @@ namespace IsoMounter
 
         #region Constructor(s)
 
-        public LinuxIsoManager(ILogger logger, IFileSystem fileSystem, IEnvironmentInfo environment, IProcessFactory processFactory)
+        public LinuxIsoManager(ILogger logger, IEnvironmentInfo environment, IProcessFactory processFactory)
         {
 
             EnvironmentInfo = environment;
-            FileSystem = fileSystem;
             _logger = logger;
             ProcessFactory = processFactory;
 

Emby.Photos/PhotoProvider.cs

@@ -9,7 +9,6 @@ using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Drawing;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.IO;
 using Microsoft.Extensions.Logging;
 using TagLib;
 using TagLib.IFD;
@@ -21,13 +20,11 @@ namespace Emby.Photos
     public class PhotoProvider : ICustomMetadataProvider<Photo>, IForcedProvider, IHasItemChangeMonitor
     {
         private readonly ILogger _logger;
-        private readonly IFileSystem _fileSystem;
         private IImageProcessor _imageProcessor;
 
-        public PhotoProvider(ILogger logger, IFileSystem fileSystem, IImageProcessor imageProcessor)
+        public PhotoProvider(ILogger logger, IImageProcessor imageProcessor)
         {
             _logger = logger;
-            _fileSystem = fileSystem;
             _imageProcessor = imageProcessor;
         }
 

Emby.Server.Implementations/AppBase/BaseConfigurationManager.cs

@@ -79,7 +79,7 @@ namespace Emby.Server.Implementations.AppBase
             get
             {
                 // Lazy load
-                LazyInitializer.EnsureInitialized(ref _configuration, ref _configurationLoaded, ref _configurationSyncLock, () => (BaseApplicationConfiguration)ConfigurationHelper.GetXmlConfiguration(ConfigurationType, CommonApplicationPaths.SystemConfigurationFilePath, XmlSerializer, FileSystem));
+                LazyInitializer.EnsureInitialized(ref _configuration, ref _configurationLoaded, ref _configurationSyncLock, () => (BaseApplicationConfiguration)ConfigurationHelper.GetXmlConfiguration(ConfigurationType, CommonApplicationPaths.SystemConfigurationFilePath, XmlSerializer));
                 return _configuration;
             }
             protected set

Emby.Server.Implementations/AppBase/ConfigurationHelper.cs

@@ -1,7 +1,6 @@
 using System;
 using System.IO;
 using System.Linq;
-using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Serialization;
 
 namespace Emby.Server.Implementations.AppBase
@@ -18,9 +17,8 @@ namespace Emby.Server.Implementations.AppBase
         /// <param name="type">The type.</param>
         /// <param name="path">The path.</param>
         /// <param name="xmlSerializer">The XML serializer.</param>
-        /// <param name="fileSystem">The file system</param>
         /// <returns>System.Object.</returns>
-        public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer, IFileSystem fileSystem)
+        public static object GetXmlConfiguration(Type type, string path, IXmlSerializer xmlSerializer)
         {
             object configuration;
 

Emby.Server.Implementations/ApplicationHost.cs

@@ -440,7 +440,7 @@ namespace Emby.Server.Implementations
             {
                 if (_deviceId == null)
                 {
-                    _deviceId = new DeviceId(ApplicationPaths, LoggerFactory, FileSystemManager);
+                    _deviceId = new DeviceId(ApplicationPaths, LoggerFactory);
                 }
 
                 return _deviceId.Value;
@@ -780,7 +780,7 @@ namespace Emby.Server.Implementations
             InstallationManager = new InstallationManager(LoggerFactory, this, ApplicationPaths, HttpClient, JsonSerializer, ServerConfigurationManager, FileSystemManager, CryptographyProvider, PackageRuntime);
             RegisterSingleInstance(InstallationManager);
 
-            ZipClient = new ZipClient(FileSystemManager);
+            ZipClient = new ZipClient();
             RegisterSingleInstance(ZipClient);
 
             HttpResultFactory = new HttpResultFactory(LoggerFactory, FileSystemManager, JsonSerializer, CreateBrotliCompressor());
@@ -820,7 +820,7 @@ namespace Emby.Server.Implementations
             AuthenticationRepository = GetAuthenticationRepository();
             RegisterSingleInstance(AuthenticationRepository);
 
-            UserManager = new UserManager(LoggerFactory, ServerConfigurationManager, UserRepository, XmlSerializer, NetworkManager, () => ImageProcessor, () => DtoService, this, JsonSerializer, FileSystemManager, CryptographyProvider);
+            UserManager = new UserManager(LoggerFactory, ServerConfigurationManager, UserRepository, XmlSerializer, NetworkManager, () => ImageProcessor, () => DtoService, this, JsonSerializer, FileSystemManager);
             RegisterSingleInstance(UserManager);
 
             LibraryManager = new LibraryManager(this, LoggerFactory, TaskManager, UserManager, ServerConfigurationManager, UserDataManager, () => LibraryMonitor, FileSystemManager, () => ProviderManager, () => UserViewManager);
@@ -830,7 +830,7 @@ namespace Emby.Server.Implementations
             var musicManager = new MusicManager(LibraryManager);
             RegisterSingleInstance<IMusicManager>(new MusicManager(LibraryManager));
 
-            LibraryMonitor = new LibraryMonitor(LoggerFactory, TaskManager, LibraryManager, ServerConfigurationManager, FileSystemManager, EnvironmentInfo);
+            LibraryMonitor = new LibraryMonitor(LoggerFactory, LibraryManager, ServerConfigurationManager, FileSystemManager, EnvironmentInfo);
             RegisterSingleInstance(LibraryMonitor);
 
             RegisterSingleInstance<ISearchEngine>(() => new SearchEngine(LoggerFactory, LibraryManager, UserManager));
@@ -859,7 +859,7 @@ namespace Emby.Server.Implementations
             var encryptionManager = new EncryptionManager();
             RegisterSingleInstance<IEncryptionManager>(encryptionManager);
 
-            DeviceManager = new DeviceManager(AuthenticationRepository, JsonSerializer, LibraryManager, LocalizationManager, UserManager, FileSystemManager, LibraryMonitor, ServerConfigurationManager, LoggerFactory, NetworkManager);
+            DeviceManager = new DeviceManager(AuthenticationRepository, JsonSerializer, LibraryManager, LocalizationManager, UserManager, FileSystemManager, LibraryMonitor, ServerConfigurationManager);
             RegisterSingleInstance(DeviceManager);
 
             MediaSourceManager = new MediaSourceManager(ItemRepository, ApplicationPaths, LocalizationManager, UserManager, LibraryManager, LoggerFactory, JsonSerializer, FileSystemManager, UserDataManager, () => MediaEncoder);
@@ -871,7 +871,7 @@ namespace Emby.Server.Implementations
             ProviderManager = new ProviderManager(HttpClient, SubtitleManager, ServerConfigurationManager, LibraryMonitor, LoggerFactory, FileSystemManager, ApplicationPaths, () => LibraryManager, JsonSerializer);
             RegisterSingleInstance(ProviderManager);
 
-            DtoService = new DtoService(LoggerFactory, LibraryManager, UserDataManager, ItemRepository, ImageProcessor, ServerConfigurationManager, FileSystemManager, ProviderManager, () => ChannelManager, this, () => DeviceManager, () => MediaSourceManager, () => LiveTvManager);
+            DtoService = new DtoService(LoggerFactory, LibraryManager, UserDataManager, ItemRepository, ImageProcessor, ProviderManager, this, () => MediaSourceManager, () => LiveTvManager);
             RegisterSingleInstance(DtoService);
 
             ChannelManager = new ChannelManager(UserManager, DtoService, LibraryManager, LoggerFactory, ServerConfigurationManager, FileSystemManager, UserDataManager, JsonSerializer, LocalizationManager, HttpClient, ProviderManager);
@@ -1058,7 +1058,7 @@ namespace Emby.Server.Implementations
 
         protected virtual FFMpegInfo GetFFMpegInfo()
         {
-            return new FFMpegLoader(Logger, ApplicationPaths, HttpClient, ZipClient, FileSystemManager, GetFfmpegInstallInfo())
+            return new FFMpegLoader(ApplicationPaths, FileSystemManager, GetFfmpegInstallInfo())
                 .GetFFMpegInfo(StartupOptions);
         }
 

Emby.Server.Implementations/Archiving/ZipClient.cs

@@ -14,11 +14,9 @@ namespace Emby.Server.Implementations.Archiving
     /// </summary>
     public class ZipClient : IZipClient
     {
-        private readonly IFileSystem _fileSystem;
+        public ZipClient()
-
-        public ZipClient(IFileSystem fileSystem)
         {
-            _fileSystem = fileSystem;
+
         }
 
         /// <summary>

Emby.Server.Implementations/Collections/CollectionImageProvider.cs

@@ -10,14 +10,18 @@ using MediaBrowser.Controller.Entities.Movies;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Collections
 {
     public class CollectionImageProvider : BaseDynamicImageProvider<BoxSet>
     {
-        public CollectionImageProvider(IFileSystem fileSystem, IProviderManager providerManager, IApplicationPaths applicationPaths, IImageProcessor imageProcessor) : base(fileSystem, providerManager, applicationPaths, imageProcessor)
+        public CollectionImageProvider(
+            IFileSystem fileSystem,
+            IProviderManager providerManager,
+            IApplicationPaths applicationPaths,
+            IImageProcessor imageProcessor)
+            : base(fileSystem, providerManager, applicationPaths, imageProcessor)
         {
         }
 

Emby.Server.Implementations/Collections/CollectionManager.cs

@@ -342,14 +342,12 @@ namespace Emby.Server.Implementations.Collections
     {
         private readonly CollectionManager _collectionManager;
         private readonly IServerConfigurationManager _config;
-        private readonly IFileSystem _fileSystem;
         private ILogger _logger;
 
-        public CollectionManagerEntryPoint(ICollectionManager collectionManager, IServerConfigurationManager config, IFileSystem fileSystem, ILogger logger)
+        public CollectionManagerEntryPoint(ICollectionManager collectionManager, IServerConfigurationManager config, ILogger logger)
         {
             _collectionManager = (CollectionManager)collectionManager;
             _config = config;
-            _fileSystem = fileSystem;
             _logger = logger;
         }
 

Emby.Server.Implementations/Data/CleanDatabaseScheduledTask.cs

@@ -1,11 +1,8 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
-using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Controller.Persistence;
-using MediaBrowser.Model.IO;
 using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.Data
@@ -13,18 +10,12 @@ namespace Emby.Server.Implementations.Data
     public class CleanDatabaseScheduledTask : ILibraryPostScanTask
     {
         private readonly ILibraryManager _libraryManager;
-        private readonly IItemRepository _itemRepo;
         private readonly ILogger _logger;
-        private readonly IFileSystem _fileSystem;
-        private readonly IApplicationPaths _appPaths;
 
-        public CleanDatabaseScheduledTask(ILibraryManager libraryManager, IItemRepository itemRepo, ILogger logger, IFileSystem fileSystem, IApplicationPaths appPaths)
+        public CleanDatabaseScheduledTask(ILibraryManager libraryManager, ILogger logger)
         {
             _libraryManager = libraryManager;
-            _itemRepo = itemRepo;
             _logger = logger;
-            _fileSystem = fileSystem;
-            _appPaths = appPaths;
         }
 
         public Task Run(IProgress<double> progress, CancellationToken cancellationToken)

Emby.Server.Implementations/Devices/DeviceId.cs

@@ -11,7 +11,6 @@ namespace Emby.Server.Implementations.Devices
     {
         private readonly IApplicationPaths _appPaths;
         private readonly ILogger _logger;
-        private readonly IFileSystem _fileSystem;
 
         private readonly object _syncLock = new object();
 
@@ -86,19 +85,10 @@ namespace Emby.Server.Implementations.Devices
 
         private string _id;
 
-        public DeviceId(
+        public DeviceId(IApplicationPaths appPaths, ILoggerFactory loggerFactory)
-            IApplicationPaths appPaths,
-            ILoggerFactory loggerFactory,
-            IFileSystem fileSystem)
         {
-            if (fileSystem == null)
-            {
-                throw new ArgumentNullException(nameof(fileSystem));
-            }
-
             _appPaths = appPaths;
             _logger = loggerFactory.CreateLogger("SystemId");
-            _fileSystem = fileSystem;
         }
 
         public string Value => _id ?? (_id = GetDeviceId());

Emby.Server.Implementations/Devices/DeviceManager.cs

@@ -34,8 +34,6 @@ namespace Emby.Server.Implementations.Devices
         private readonly IFileSystem _fileSystem;
         private readonly ILibraryMonitor _libraryMonitor;
         private readonly IServerConfigurationManager _config;
-        private readonly ILogger _logger;
-        private readonly INetworkManager _network;
         private readonly ILibraryManager _libraryManager;
         private readonly ILocalizationManager _localizationManager;
 
@@ -55,17 +53,13 @@ namespace Emby.Server.Implementations.Devices
             IUserManager userManager,
             IFileSystem fileSystem,
             ILibraryMonitor libraryMonitor,
-            IServerConfigurationManager config,
+            IServerConfigurationManager config)
-            ILoggerFactory loggerFactory,
-            INetworkManager network)
         {
             _json = json;
             _userManager = userManager;
             _fileSystem = fileSystem;
             _libraryMonitor = libraryMonitor;
             _config = config;
-            _logger = loggerFactory.CreateLogger(nameof(DeviceManager));
-            _network = network;
             _libraryManager = libraryManager;
             _localizationManager = localizationManager;
             _authRepo = authRepo;
@@ -414,14 +408,12 @@ namespace Emby.Server.Implementations.Devices
     {
         private readonly DeviceManager _deviceManager;
         private readonly IServerConfigurationManager _config;
-        private readonly IFileSystem _fileSystem;
         private ILogger _logger;
 
-        public DeviceManagerEntryPoint(IDeviceManager deviceManager, IServerConfigurationManager config, IFileSystem fileSystem, ILogger logger)
+        public DeviceManagerEntryPoint(IDeviceManager deviceManager, IServerConfigurationManager config, ILogger logger)
         {
             _deviceManager = (DeviceManager)deviceManager;
             _config = config;
-            _fileSystem = fileSystem;
             _logger = logger;
         }
 

Emby.Server.Implementations/Dto/DtoService.cs

@@ -36,13 +36,9 @@ namespace Emby.Server.Implementations.Dto
         private readonly IItemRepository _itemRepo;
 
         private readonly IImageProcessor _imageProcessor;
-        private readonly IServerConfigurationManager _config;
-        private readonly IFileSystem _fileSystem;
         private readonly IProviderManager _providerManager;
 
-        private readonly Func<IChannelManager> _channelManagerFactory;
         private readonly IApplicationHost _appHost;
-        private readonly Func<IDeviceManager> _deviceManager;
         private readonly Func<IMediaSourceManager> _mediaSourceManager;
         private readonly Func<ILiveTvManager> _livetvManager;
 
@@ -52,12 +48,8 @@ namespace Emby.Server.Implementations.Dto
             IUserDataManager userDataRepository,
             IItemRepository itemRepo,
             IImageProcessor imageProcessor,
-            IServerConfigurationManager config,
-            IFileSystem fileSystem,
             IProviderManager providerManager,
-            Func<IChannelManager> channelManagerFactory,
             IApplicationHost appHost,
-            Func<IDeviceManager> deviceManager,
             Func<IMediaSourceManager> mediaSourceManager,
             Func<ILiveTvManager> livetvManager)
         {
@@ -66,12 +58,8 @@ namespace Emby.Server.Implementations.Dto
             _userDataRepository = userDataRepository;
             _itemRepo = itemRepo;
             _imageProcessor = imageProcessor;
-            _config = config;
-            _fileSystem = fileSystem;
             _providerManager = providerManager;
-            _channelManagerFactory = channelManagerFactory;
             _appHost = appHost;
-            _deviceManager = deviceManager;
             _mediaSourceManager = mediaSourceManager;
             _livetvManager = livetvManager;
         }

Emby.Server.Implementations/FFMpeg/FFMpegLoader.cs

@@ -3,27 +3,19 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using MediaBrowser.Common.Configuration;
-using MediaBrowser.Common.Net;
 using MediaBrowser.Model.IO;
-using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.FFMpeg
 {
     public class FFMpegLoader
     {
-        private readonly IHttpClient _httpClient;
         private readonly IApplicationPaths _appPaths;
-        private readonly ILogger _logger;
-        private readonly IZipClient _zipClient;
         private readonly IFileSystem _fileSystem;
         private readonly FFMpegInstallInfo _ffmpegInstallInfo;
 
-        public FFMpegLoader(ILogger logger, IApplicationPaths appPaths, IHttpClient httpClient, IZipClient zipClient, IFileSystem fileSystem, FFMpegInstallInfo ffmpegInstallInfo)
+        public FFMpegLoader(IApplicationPaths appPaths, IFileSystem fileSystem, FFMpegInstallInfo ffmpegInstallInfo)
         {
-            _logger = logger;
             _appPaths = appPaths;
-            _httpClient = httpClient;
-            _zipClient = zipClient;
             _fileSystem = fileSystem;
             _ffmpegInstallInfo = ffmpegInstallInfo;
         }
@@ -115,8 +107,7 @@ namespace Emby.Server.Implementations.FFMpeg
             var encoderFilename = Path.GetFileName(info.EncoderPath);
             var probeFilename = Path.GetFileName(info.ProbePath);
 
-            foreach (var directory in _fileSystem.GetDirectoryPaths(rootEncoderPath)
+            foreach (var directory in _fileSystem.GetDirectoryPaths(rootEncoderPath))
-                .ToList())
             {
                 var allFiles = _fileSystem.GetFilePaths(directory, true).ToList();
 

Emby.Server.Implementations/IO/FileRefresher.cs

@@ -17,31 +17,23 @@ namespace Emby.Server.Implementations.IO
     public class FileRefresher : IDisposable
     {
         private ILogger Logger { get; set; }
-        private ITaskManager TaskManager { get; set; }
         private ILibraryManager LibraryManager { get; set; }
         private IServerConfigurationManager ConfigurationManager { get; set; }
-        private readonly IFileSystem _fileSystem;
         private readonly List<string> _affectedPaths = new List<string>();
         private Timer _timer;
         private readonly object _timerLock = new object();
         public string Path { get; private set; }
 
         public event EventHandler<EventArgs> Completed;
-        private readonly IEnvironmentInfo _environmentInfo;
-        private readonly ILibraryManager _libraryManager;
 
-        public FileRefresher(string path, IFileSystem fileSystem, IServerConfigurationManager configurationManager, ILibraryManager libraryManager, ITaskManager taskManager, ILogger logger, IEnvironmentInfo environmentInfo, ILibraryManager libraryManager1)
+        public FileRefresher(string path, IServerConfigurationManager configurationManager, ILibraryManager libraryManager, ILogger logger)
         {
             logger.LogDebug("New file refresher created for {0}", path);
             Path = path;
 
-            _fileSystem = fileSystem;
             ConfigurationManager = configurationManager;
             LibraryManager = libraryManager;
-            TaskManager = taskManager;
             Logger = logger;
-            _environmentInfo = environmentInfo;
-            _libraryManager = libraryManager1;
             AddPath(path);
         }
 

Emby.Server.Implementations/IO/LibraryMonitor.cs

@@ -34,7 +34,7 @@ namespace Emby.Server.Implementations.IO
         /// <summary>
         /// Any file name ending in any of these will be ignored by the watchers
         /// </summary>
-        private readonly HashSet<string> _alwaysIgnoreFiles = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<string> _alwaysIgnoreFiles = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
             "small.jpg",
             "albumart.jpg",
@@ -44,7 +44,7 @@ namespace Emby.Server.Implementations.IO
             "TempSBE"
         };
 
-        private readonly string[] _alwaysIgnoreSubstrings = new string[]
+        private static readonly string[] _alwaysIgnoreSubstrings = new string[]
         {
             // Synology
             "eaDir",
@@ -53,7 +53,7 @@ namespace Emby.Server.Implementations.IO
             ".actors"
         };
 
-        private readonly HashSet<string> _alwaysIgnoreExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        private static readonly HashSet<string> _alwaysIgnoreExtensions = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
         {
             // thumbs.db
             ".db",
@@ -123,12 +123,6 @@ namespace Emby.Server.Implementations.IO
         /// <value>The logger.</value>
         private ILogger Logger { get; set; }
 
-        /// <summary>
-        /// Gets or sets the task manager.
-        /// </summary>
-        /// <value>The task manager.</value>
-        private ITaskManager TaskManager { get; set; }
-
         private ILibraryManager LibraryManager { get; set; }
         private IServerConfigurationManager ConfigurationManager { get; set; }
 
@@ -140,19 +134,12 @@ namespace Emby.Server.Implementations.IO
         /// </summary>
         public LibraryMonitor(
             ILoggerFactory loggerFactory,
-            ITaskManager taskManager,
             ILibraryManager libraryManager,
             IServerConfigurationManager configurationManager,
             IFileSystem fileSystem,
             IEnvironmentInfo environmentInfo)
         {
-            if (taskManager == null)
-            {
-                throw new ArgumentNullException(nameof(taskManager));
-            }
-
             LibraryManager = libraryManager;
-            TaskManager = taskManager;
             Logger = loggerFactory.CreateLogger(GetType().Name);
             ConfigurationManager = configurationManager;
             _fileSystem = fileSystem;
@@ -541,7 +528,7 @@ namespace Emby.Server.Implementations.IO
                     }
                 }
 
-                var newRefresher = new FileRefresher(path, _fileSystem, ConfigurationManager, LibraryManager, TaskManager, Logger, _environmentInfo, LibraryManager);
+                var newRefresher = new FileRefresher(path, ConfigurationManager, LibraryManager, Logger);
                 newRefresher.Completed += NewRefresher_Completed;
                 _activeRefreshers.Add(newRefresher);
             }

Emby.Server.Implementations/Library/CoreResolutionIgnoreRule.cs

@@ -1,5 +1,4 @@
 using System;
-using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using MediaBrowser.Controller.Entities;
@@ -7,7 +6,6 @@ using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Resolvers;
 using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
-using Microsoft.Extensions.Logging;
 
 namespace Emby.Server.Implementations.Library
 {
@@ -16,16 +14,14 @@ namespace Emby.Server.Implementations.Library
     /// </summary>
     public class CoreResolutionIgnoreRule : IResolverIgnoreRule
     {
-        private readonly IFileSystem _fileSystem;
         private readonly ILibraryManager _libraryManager;
-        private readonly ILogger _logger;
 
         private bool _ignoreDotPrefix;
 
         /// <summary>
         /// Any folder named in this list will be ignored - can be added to at runtime for extensibility
         /// </summary>
-        public static readonly Dictionary<string, string> IgnoreFolders = new List<string>
+        public static readonly string[] IgnoreFolders =
         {
                 "metadata",
                 "ps3_update",
@@ -50,13 +46,11 @@ namespace Emby.Server.Implementations.Library
                 // macos
                 ".AppleDouble"
 
-        }.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase);
+        };
 
-        public CoreResolutionIgnoreRule(IFileSystem fileSystem, ILibraryManager libraryManager, ILogger logger)
+        public CoreResolutionIgnoreRule(ILibraryManager libraryManager)
         {
-            _fileSystem = fileSystem;
             _libraryManager = libraryManager;
-            _logger = logger;
 
             _ignoreDotPrefix = Environment.OSVersion.Platform != PlatformID.Win32NT;
         }
@@ -117,7 +111,7 @@ namespace Emby.Server.Implementations.Library
             if (fileInfo.IsDirectory)
             {
                 // Ignore any folders in our list
-                if (IgnoreFolders.ContainsKey(filename))
+                if (IgnoreFolders.Contains(filename, StringComparer.OrdinalIgnoreCase))
                 {
                     return true;
                 }

Emby.Server.Implementations/Library/LibraryManager.cs

@@ -986,7 +986,7 @@ namespace Emby.Server.Implementations.Library
             // Ensure the location is available.
             Directory.CreateDirectory(ConfigurationManager.ApplicationPaths.PeoplePath);
 
-            return new PeopleValidator(this, _logger, ConfigurationManager, _fileSystem).ValidatePeople(cancellationToken, progress);
+            return new PeopleValidator(this, _logger, _fileSystem).ValidatePeople(cancellationToken, progress);
         }
 
         /// <summary>
@@ -2543,7 +2543,7 @@ namespace Emby.Server.Implementations.Library
 
             var resolvers = new IItemResolver[]
             {
-                new GenericVideoResolver<Trailer>(this, _fileSystem)
+                new GenericVideoResolver<Trailer>(this)
             };
 
             return ResolvePaths(files, directoryService, null, new LibraryOptions(), null, resolvers)

Emby.Server.Implementations/Library/Resolvers/BaseVideoResolver.cs

@@ -6,7 +6,6 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
@@ -18,11 +17,9 @@ namespace Emby.Server.Implementations.Library.Resolvers
         where T : Video, new()
     {
         protected readonly ILibraryManager LibraryManager;
-        protected readonly IFileSystem FileSystem;
 
-        protected BaseVideoResolver(ILibraryManager libraryManager, IFileSystem fileSystem)
+        protected BaseVideoResolver(ILibraryManager libraryManager)
         {
-            FileSystem = fileSystem;
             LibraryManager = libraryManager;
         }
 

Emby.Server.Implementations/Library/Resolvers/Movies/MovieResolver.cs

@@ -548,7 +548,8 @@ namespace Emby.Server.Implementations.Library.Resolvers.Movies
 
         private IImageProcessor _imageProcessor;
 
-        public MovieResolver(ILibraryManager libraryManager, IFileSystem fileSystem, IImageProcessor imageProcessor) : base(libraryManager, fileSystem)
+        public MovieResolver(ILibraryManager libraryManager, IImageProcessor imageProcessor)
+            : base(libraryManager)
         {
             _imageProcessor = imageProcessor;
         }

Emby.Server.Implementations/Library/Resolvers/PhotoResolver.cs

@@ -7,7 +7,6 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
@@ -15,13 +14,11 @@ namespace Emby.Server.Implementations.Library.Resolvers
     {
         private readonly IImageProcessor _imageProcessor;
         private readonly ILibraryManager _libraryManager;
-        private readonly IFileSystem _fileSystem;
 
-        public PhotoResolver(IImageProcessor imageProcessor, ILibraryManager libraryManager, IFileSystem fileSystem)
+        public PhotoResolver(IImageProcessor imageProcessor, ILibraryManager libraryManager)
         {
             _imageProcessor = imageProcessor;
             _libraryManager = libraryManager;
-            _fileSystem = fileSystem;
         }
 
         /// <summary>
@@ -113,8 +110,7 @@ namespace Emby.Server.Implementations.Library.Resolvers
                 return false;
             }
 
-            return imageProcessor.SupportedInputFormats.Contains((Path.GetExtension(path) ?? string.Empty).TrimStart('.'));
+            return imageProcessor.SupportedInputFormats.Contains(Path.GetExtension(path).TrimStart('.'), StringComparer.Ordinal);
-        }
+        }
-
     }
 }

Emby.Server.Implementations/Library/Resolvers/TV/EpisodeResolver.cs

@@ -3,7 +3,6 @@ using System.Linq;
 using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Library.Resolvers.TV
 {
@@ -74,7 +73,8 @@ namespace Emby.Server.Implementations.Library.Resolvers.TV
             return null;
         }
 
-        public EpisodeResolver(ILibraryManager libraryManager, IFileSystem fileSystem) : base(libraryManager, fileSystem)
+        public EpisodeResolver(ILibraryManager libraryManager)
+            : base(libraryManager)
         {
         }
     }

Emby.Server.Implementations/Library/Resolvers/VideoResolver.cs

@@ -1,13 +1,13 @@
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
-using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.Library.Resolvers
 {
     public class GenericVideoResolver<T> : BaseVideoResolver<T>
         where T : Video, new()
     {
-        public GenericVideoResolver(ILibraryManager libraryManager, IFileSystem fileSystem) : base(libraryManager, fileSystem)
+        public GenericVideoResolver(ILibraryManager libraryManager)
+            : base(libraryManager)
         {
         }
     }

Emby.Server.Implementations/Library/UserManager.cs

@@ -74,7 +74,6 @@ namespace Emby.Server.Implementations.Library
         private readonly Func<IDtoService> _dtoServiceFactory;
         private readonly IServerApplicationHost _appHost;
         private readonly IFileSystem _fileSystem;
-        private readonly ICryptoProvider _cryptographyProvider;
 
         private IAuthenticationProvider[] _authenticationProviders;
         private DefaultAuthenticationProvider _defaultAuthenticationProvider;
@@ -89,8 +88,7 @@ namespace Emby.Server.Implementations.Library
             Func<IDtoService> dtoServiceFactory,
             IServerApplicationHost appHost,
             IJsonSerializer jsonSerializer,
-            IFileSystem fileSystem,
+            IFileSystem fileSystem)
-            ICryptoProvider cryptographyProvider)
         {
             _logger = loggerFactory.CreateLogger(nameof(UserManager));
             UserRepository = userRepository;
@@ -101,7 +99,6 @@ namespace Emby.Server.Implementations.Library
             _appHost = appHost;
             _jsonSerializer = jsonSerializer;
             _fileSystem = fileSystem;
-            _cryptographyProvider = cryptographyProvider;
             ConfigurationManager = configurationManager;
             _users = Array.Empty<User>();
 

Emby.Server.Implementations/Library/Validators/PeopleValidator.cs

@@ -24,7 +24,6 @@ namespace Emby.Server.Implementations.Library.Validators
         /// </summary>
         private readonly ILogger _logger;
 
-        private readonly IServerConfigurationManager _config;
         private readonly IFileSystem _fileSystem;
 
         /// <summary>
@@ -32,11 +31,10 @@ namespace Emby.Server.Implementations.Library.Validators
         /// </summary>
         /// <param name="libraryManager">The library manager.</param>
         /// <param name="logger">The logger.</param>
-        public PeopleValidator(ILibraryManager libraryManager, ILogger logger, IServerConfigurationManager config, IFileSystem fileSystem)
+        public PeopleValidator(ILibraryManager libraryManager, ILogger logger, IFileSystem fileSystem)
         {
             _libraryManager = libraryManager;
             _logger = logger;
-            _config = config;
             _fileSystem = fileSystem;
         }
 

Emby.Server.Implementations/LiveTv/EmbyTV/EmbyTV.cs

@@ -105,8 +105,8 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             _mediaSourceManager = mediaSourceManager;
             _streamHelper = streamHelper;
 
-            _seriesTimerProvider = new SeriesTimerManager(fileSystem, jsonSerializer, _logger, Path.Combine(DataPath, "seriestimers"));
+            _seriesTimerProvider = new SeriesTimerManager(jsonSerializer, _logger, Path.Combine(DataPath, "seriestimers"));
-            _timerProvider = new TimerManager(fileSystem, jsonSerializer, _logger, Path.Combine(DataPath, "timers"), _logger);
+            _timerProvider = new TimerManager(jsonSerializer, _logger, Path.Combine(DataPath, "timers"), _logger);
             _timerProvider.TimerFired += _timerProvider_TimerFired;
 
             _config.NamedConfigurationUpdated += _config_NamedConfigurationUpdated;
@@ -1708,7 +1708,7 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         {
             if (mediaSource.RequiresLooping || !(mediaSource.Container ?? string.Empty).EndsWith("ts", StringComparison.OrdinalIgnoreCase) || (mediaSource.Protocol != MediaProtocol.File && mediaSource.Protocol != MediaProtocol.Http))
             {
-                return new EncodedRecorder(_logger, _fileSystem, _mediaEncoder, _config.ApplicationPaths, _jsonSerializer, _httpClient, _processFactory, _config, _assemblyInfo);
+                return new EncodedRecorder(_logger, _fileSystem, _mediaEncoder, _config.ApplicationPaths, _jsonSerializer, _processFactory, _config);
             }
 
             return new DirectRecorder(_logger, _httpClient, _fileSystem, _streamHelper);

Emby.Server.Implementations/LiveTv/EmbyTV/EncodedRecorder.cs

@@ -7,7 +7,6 @@ using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
 using MediaBrowser.Common.Configuration;
-using MediaBrowser.Common.Net;
 using MediaBrowser.Controller;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Library;
@@ -17,7 +16,6 @@ using MediaBrowser.Model.Diagnostics;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
 using MediaBrowser.Model.IO;
-using MediaBrowser.Model.Reflection;
 using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
@@ -27,7 +25,6 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
     {
         private readonly ILogger _logger;
         private readonly IFileSystem _fileSystem;
-        private readonly IHttpClient _httpClient;
         private readonly IMediaEncoder _mediaEncoder;
         private readonly IServerApplicationPaths _appPaths;
         private bool _hasExited;
@@ -38,19 +35,23 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         private readonly IJsonSerializer _json;
         private readonly TaskCompletionSource<bool> _taskCompletionSource = new TaskCompletionSource<bool>();
         private readonly IServerConfigurationManager _config;
-        private readonly IAssemblyInfo _assemblyInfo;
 
-        public EncodedRecorder(ILogger logger, IFileSystem fileSystem, IMediaEncoder mediaEncoder, IServerApplicationPaths appPaths, IJsonSerializer json, IHttpClient httpClient, IProcessFactory processFactory, IServerConfigurationManager config, IAssemblyInfo assemblyInfo)
+        public EncodedRecorder(
+            ILogger logger,
+            IFileSystem fileSystem,
+            IMediaEncoder mediaEncoder,
+            IServerApplicationPaths appPaths,
+            IJsonSerializer json,
+            IProcessFactory processFactory,
+            IServerConfigurationManager config)
         {
             _logger = logger;
             _fileSystem = fileSystem;
             _mediaEncoder = mediaEncoder;
             _appPaths = appPaths;
             _json = json;
-            _httpClient = httpClient;
             _processFactory = processFactory;
             _config = config;
-            _assemblyInfo = assemblyInfo;
         }
 
         private static bool CopySubtitles => false;

Emby.Server.Implementations/LiveTv/EmbyTV/ItemDataProvider.cs

@@ -17,15 +17,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         protected readonly ILogger Logger;
         private readonly string _dataPath;
         protected readonly Func<T, T, bool> EqualityComparer;
-        private readonly IFileSystem _fileSystem;
 
-        public ItemDataProvider(IFileSystem fileSystem, IJsonSerializer jsonSerializer, ILogger logger, string dataPath, Func<T, T, bool> equalityComparer)
+        public ItemDataProvider(IJsonSerializer jsonSerializer, ILogger logger, string dataPath, Func<T, T, bool> equalityComparer)
         {
             Logger = logger;
             _dataPath = dataPath;
             EqualityComparer = equalityComparer;
             _jsonSerializer = jsonSerializer;
-            _fileSystem = fileSystem;
         }
 
         public IReadOnlyList<T> GetAll()

Emby.Server.Implementations/LiveTv/EmbyTV/SeriesTimerManager.cs

@@ -1,6 +1,5 @@
 using System;
 using MediaBrowser.Controller.LiveTv;
-using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
 
@@ -8,8 +7,8 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 {
     public class SeriesTimerManager : ItemDataProvider<SeriesTimerInfo>
     {
-        public SeriesTimerManager(IFileSystem fileSystem, IJsonSerializer jsonSerializer, ILogger logger, string dataPath)
+        public SeriesTimerManager(IJsonSerializer jsonSerializer, ILogger logger, string dataPath)
-            : base(fileSystem, jsonSerializer, logger, dataPath, (r1, r2) => string.Equals(r1.Id, r2.Id, StringComparison.OrdinalIgnoreCase))
+            : base(jsonSerializer, logger, dataPath, (r1, r2) => string.Equals(r1.Id, r2.Id, StringComparison.OrdinalIgnoreCase))
         {
         }
 

Emby.Server.Implementations/LiveTv/EmbyTV/TimerManager.cs

@@ -5,7 +5,6 @@ using System.Linq;
 using System.Threading;
 using MediaBrowser.Controller.LiveTv;
 using MediaBrowser.Model.Events;
-using MediaBrowser.Model.IO;
 using MediaBrowser.Model.LiveTv;
 using MediaBrowser.Model.Serialization;
 using Microsoft.Extensions.Logging;
@@ -19,8 +18,8 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
 
         public event EventHandler<GenericEventArgs<TimerInfo>> TimerFired;
 
-        public TimerManager(IFileSystem fileSystem, IJsonSerializer jsonSerializer, ILogger logger, string dataPath, ILogger logger1)
+        public TimerManager(IJsonSerializer jsonSerializer, ILogger logger, string dataPath, ILogger logger1)
-            : base(fileSystem, jsonSerializer, logger, dataPath, (r1, r2) => string.Equals(r1.Id, r2.Id, StringComparison.OrdinalIgnoreCase))
+            : base(jsonSerializer, logger, dataPath, (r1, r2) => string.Equals(r1.Id, r2.Id, StringComparison.OrdinalIgnoreCase))
         {
             _logger = logger1;
         }

Emby.Server.Implementations/LiveTv/TunerHosts/BaseTunerHost.cs

@@ -9,7 +9,6 @@ using MediaBrowser.Common.Configuration;
 using MediaBrowser.Controller.Configuration;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.LiveTv;
-using MediaBrowser.Controller.MediaEncoding;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.LiveTv;
@@ -23,18 +22,16 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
         protected readonly IServerConfigurationManager Config;
         protected readonly ILogger Logger;
         protected IJsonSerializer JsonSerializer;
-        protected readonly IMediaEncoder MediaEncoder;
         protected readonly IFileSystem FileSystem;
 
         private readonly ConcurrentDictionary<string, ChannelCache> _channelCache =
             new ConcurrentDictionary<string, ChannelCache>(StringComparer.OrdinalIgnoreCase);
 
-        protected BaseTunerHost(IServerConfigurationManager config, ILogger logger, IJsonSerializer jsonSerializer, IMediaEncoder mediaEncoder, IFileSystem fileSystem)
+        protected BaseTunerHost(IServerConfigurationManager config, ILogger logger, IJsonSerializer jsonSerializer, IFileSystem fileSystem)
         {
             Config = config;
             Logger = logger;
             JsonSerializer = jsonSerializer;
-            MediaEncoder = mediaEncoder;
             FileSystem = fileSystem;
         }
 

Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHost.cs

@@ -31,15 +31,22 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
         private readonly IServerApplicationHost _appHost;
         private readonly ISocketFactory _socketFactory;
         private readonly INetworkManager _networkManager;
-        private readonly IEnvironmentInfo _environment;
 
-        public HdHomerunHost(IServerConfigurationManager config, ILogger logger, IJsonSerializer jsonSerializer, IMediaEncoder mediaEncoder, IFileSystem fileSystem, IHttpClient httpClient, IServerApplicationHost appHost, ISocketFactory socketFactory, INetworkManager networkManager, IEnvironmentInfo environment) : base(config, logger, jsonSerializer, mediaEncoder, fileSystem)
+        public HdHomerunHost(
+            IServerConfigurationManager config,
+            ILogger logger,
+            IJsonSerializer jsonSerializer,
+            IFileSystem fileSystem,
+            IHttpClient httpClient,
+            IServerApplicationHost appHost,
+            ISocketFactory socketFactory,
+            INetworkManager networkManager)
+            : base(config, logger, jsonSerializer, fileSystem)
         {
             _httpClient = httpClient;
             _appHost = appHost;
             _socketFactory = socketFactory;
             _networkManager = networkManager;
-            _environment = environment;
         }
 
         public string Name => "HD Homerun";

Emby.Server.Implementations/LiveTv/TunerHosts/M3UTunerHost.cs

@@ -26,15 +26,14 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
     {
         private readonly IHttpClient _httpClient;
         private readonly IServerApplicationHost _appHost;
-        private readonly IEnvironmentInfo _environment;
         private readonly INetworkManager _networkManager;
         private readonly IMediaSourceManager _mediaSourceManager;
 
-        public M3UTunerHost(IServerConfigurationManager config, IMediaSourceManager mediaSourceManager, ILogger logger, IJsonSerializer jsonSerializer, IMediaEncoder mediaEncoder, IFileSystem fileSystem, IHttpClient httpClient, IServerApplicationHost appHost, IEnvironmentInfo environment, INetworkManager networkManager) : base(config, logger, jsonSerializer, mediaEncoder, fileSystem)
+        public M3UTunerHost(IServerConfigurationManager config, IMediaSourceManager mediaSourceManager, ILogger logger, IJsonSerializer jsonSerializer, IFileSystem fileSystem, IHttpClient httpClient, IServerApplicationHost appHost, INetworkManager networkManager)
+            : base(config, logger, jsonSerializer, fileSystem)
         {
             _httpClient = httpClient;
             _appHost = appHost;
-            _environment = environment;
             _networkManager = networkManager;
             _mediaSourceManager = mediaSourceManager;
         }
@@ -52,7 +51,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
         {
             var channelIdPrefix = GetFullChannelIdPrefix(info);
 
-            var result = await new M3uParser(Logger, FileSystem, _httpClient, _appHost).Parse(info.Url, channelIdPrefix, info.Id, cancellationToken).ConfigureAwait(false);
+            var result = await new M3uParser(Logger, _httpClient, _appHost).Parse(info.Url, channelIdPrefix, info.Id, cancellationToken).ConfigureAwait(false);
 
             return result.Cast<ChannelInfo>().ToList();
         }
@@ -115,7 +114,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
         public async Task Validate(TunerHostInfo info)
         {
-            using (var stream = await new M3uParser(Logger, FileSystem, _httpClient, _appHost).GetListingsStream(info.Url, CancellationToken.None).ConfigureAwait(false))
+            using (var stream = await new M3uParser(Logger, _httpClient, _appHost).GetListingsStream(info.Url, CancellationToken.None).ConfigureAwait(false))
             {
 
             }

Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs

@@ -19,14 +19,12 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
     public class M3uParser
     {
         private readonly ILogger _logger;
-        private readonly IFileSystem _fileSystem;
         private readonly IHttpClient _httpClient;
         private readonly IServerApplicationHost _appHost;
 
-        public M3uParser(ILogger logger, IFileSystem fileSystem, IHttpClient httpClient, IServerApplicationHost appHost)
+        public M3uParser(ILogger logger, IHttpClient httpClient, IServerApplicationHost appHost)
         {
             _logger = logger;
-            _fileSystem = fileSystem;
             _httpClient = httpClient;
             _appHost = appHost;
         }