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168 lines
5.9 KiB
C#
168 lines
5.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using Emby.Naming.Audio;
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using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Controller.Resolvers;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Library.Resolvers.Audio
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{
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/// <summary>
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/// Class MusicAlbumResolver.
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/// </summary>
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public class MusicAlbumResolver : ItemResolver<MusicAlbum>
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{
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private readonly ILogger<MusicAlbumResolver> _logger;
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private readonly IFileSystem _fileSystem;
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private readonly ILibraryManager _libraryManager;
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/// <summary>
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/// Initializes a new instance of the <see cref="MusicAlbumResolver"/> class.
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/// </summary>
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/// <param name="logger">The logger.</param>
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/// <param name="fileSystem">The file system.</param>
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/// <param name="libraryManager">The library manager.</param>
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public MusicAlbumResolver(ILogger<MusicAlbumResolver> logger, IFileSystem fileSystem, ILibraryManager libraryManager)
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{
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_logger = logger;
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_fileSystem = fileSystem;
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_libraryManager = libraryManager;
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}
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/// <summary>
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/// Gets the priority.
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/// </summary>
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/// <value>The priority.</value>
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public override ResolverPriority Priority => ResolverPriority.Second;
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/// <summary>
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/// Resolves the specified args.
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/// </summary>
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/// <param name="args">The args.</param>
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/// <returns>MusicAlbum.</returns>
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protected override MusicAlbum Resolve(ItemResolveArgs args)
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{
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var collectionType = args.GetCollectionType();
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var isMusicMediaFolder = string.Equals(collectionType, CollectionType.Music, StringComparison.OrdinalIgnoreCase);
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// If there's a collection type and it's not music, don't allow it.
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if (!isMusicMediaFolder)
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{
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return null;
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}
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if (!args.IsDirectory)
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{
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return null;
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}
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// Avoid mis-identifying top folders
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if (args.HasParent<MusicAlbum>())
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{
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return null;
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}
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if (args.Parent.IsRoot)
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{
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return null;
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}
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return IsMusicAlbum(args) ? new MusicAlbum() : null;
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}
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/// <summary>
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/// Determine if the supplied file data points to a music album.
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/// </summary>
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public bool IsMusicAlbum(string path, IDirectoryService directoryService)
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{
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return ContainsMusic(directoryService.GetFileSystemEntries(path), true, directoryService, _logger, _fileSystem, _libraryManager);
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}
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/// <summary>
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/// Determine if the supplied resolve args should be considered a music album.
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/// </summary>
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/// <param name="args">The args.</param>
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/// <returns><c>true</c> if [is music album] [the specified args]; otherwise, <c>false</c>.</returns>
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private bool IsMusicAlbum(ItemResolveArgs args)
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{
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// Args points to an album if parent is an Artist folder or it directly contains music
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if (args.IsDirectory)
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{
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// if (args.Parent is MusicArtist) return true; // saves us from testing children twice
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if (ContainsMusic(args.FileSystemChildren, true, args.DirectoryService, _logger, _fileSystem, _libraryManager))
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{
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return true;
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}
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}
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return false;
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}
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/// <summary>
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/// Determine if the supplied list contains what we should consider music.
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/// </summary>
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private bool ContainsMusic(
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IEnumerable<FileSystemMetadata> list,
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bool allowSubfolders,
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IDirectoryService directoryService,
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ILogger<MusicAlbumResolver> logger,
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IFileSystem fileSystem,
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ILibraryManager libraryManager)
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{
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// check for audio files before digging down into directories
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var foundAudioFile = list.Any(fileSystemInfo => !fileSystemInfo.IsDirectory && libraryManager.IsAudioFile(fileSystemInfo.FullName));
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if (foundAudioFile)
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{
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// at least one audio file exists
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return true;
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}
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if (!allowSubfolders)
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{
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// not music since no audio file exists and we're not looking into subfolders
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return false;
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}
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var discSubfolderCount = 0;
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var namingOptions = ((LibraryManager)_libraryManager).GetNamingOptions();
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var parser = new AlbumParser(namingOptions);
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var directories = list.Where(fileSystemInfo => fileSystemInfo.IsDirectory);
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var result = Parallel.ForEach(directories, (fileSystemInfo, state) =>
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{
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var path = fileSystemInfo.FullName;
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var hasMusic = ContainsMusic(directoryService.GetFileSystemEntries(path), false, directoryService, logger, fileSystem, libraryManager);
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if (hasMusic)
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{
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if (parser.IsMultiPart(path))
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{
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logger.LogDebug("Found multi-disc folder: " + path);
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Interlocked.Increment(ref discSubfolderCount);
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}
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else
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{
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// If there are folders underneath with music that are not multidisc, then this can't be a multi-disc album
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state.Stop();
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}
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}
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});
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if (!result.IsCompleted)
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{
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return false;
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}
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return discSubfolderCount > 0;
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}
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}
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}
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