jellyfin/Emby.Server.Implementations/Library/Resolvers/Audio/MusicArtistResolver.cs

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using System;
using System.Linq;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Resolvers;
using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Library.Resolvers.Audio
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{
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/// <summary>
/// Class MusicArtistResolver
/// </summary>
public class MusicArtistResolver : ItemResolver<MusicArtist>
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{
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private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
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private readonly ILibraryManager _libraryManager;
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private readonly IServerConfigurationManager _config;
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public MusicArtistResolver(ILogger logger, IFileSystem fileSystem, ILibraryManager libraryManager, IServerConfigurationManager config)
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{
_logger = logger;
_fileSystem = fileSystem;
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_libraryManager = libraryManager;
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_config = config;
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}
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/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
public override ResolverPriority Priority => ResolverPriority.Second;
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/// <summary>
/// Resolves the specified args.
/// </summary>
/// <param name="args">The args.</param>
/// <returns>MusicArtist.</returns>
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protected override MusicArtist Resolve(ItemResolveArgs args)
{
if (!args.IsDirectory) return null;
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// Don't allow nested artists
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if (args.HasParent<MusicArtist>() || args.HasParent<MusicAlbum>())
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{
return null;
}
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, it can't be a series
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if (!isMusicMediaFolder)
{
return null;
}
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if (args.ContainsFileSystemEntryByName("artist.nfo"))
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{
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return new MusicArtist();
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}
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if (_config.Configuration.EnableSimpleArtistDetection)
{
return null;
}
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// Avoid mis-identifying top folders
if (args.Parent.IsRoot) return null;
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var directoryService = args.DirectoryService;
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var albumResolver = new MusicAlbumResolver(_logger, _fileSystem, _libraryManager);
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// If we contain an album assume we are an artist folder
return args.FileSystemChildren.Where(i => i.IsDirectory).Any(i => albumResolver.IsMusicAlbum(i.FullName, directoryService, args.GetLibraryOptions())) ? new MusicArtist() : null;
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}
}
}