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using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Controller.Resolvers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Naming.Audio;
using System;
using System.Collections.Generic;
using System.IO;
namespace MediaBrowser.Server.Implementations.Library.Resolvers.Audio
{
/// <summary>
/// Class MusicAlbumResolver
/// </summary>
public class MusicAlbumResolver : ItemResolver<MusicAlbum>
{
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly ILibraryManager _libraryManager;
public MusicAlbumResolver(ILogger logger, IFileSystem fileSystem, ILibraryManager libraryManager)
{
_logger = logger;
_fileSystem = fileSystem;
_libraryManager = libraryManager;
}
/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
public override ResolverPriority Priority
{
get { return ResolverPriority.Third; } // we need to be ahead of the generic folder resolver but behind the movie one
}
/// <summary>
/// Resolves the specified args.
/// </summary>
/// <param name="args">The args.</param>
/// <returns>MusicAlbum.</returns>
protected override MusicAlbum Resolve(ItemResolveArgs args)
{
if (!args.IsDirectory) return null;
//Avoid mis-identifying top folders
if (args.Parent == null) return null;
if (args.Parent.IsRoot) return null;
if (args.Parent is MusicAlbum) return null;
// Optimization
if (args.Parent is BoxSet || args.Parent is Series || args.Parent is Season)
{
return null;
}
var collectionType = args.GetCollectionType();
var isMusicMediaFolder = string.Equals(collectionType, CollectionType.Music,
StringComparison.OrdinalIgnoreCase);
// If there's a collection type and it's not music, don't allow it.
if (!isMusicMediaFolder)
{
return null;
}
return IsMusicAlbum(args) ? new MusicAlbum() : null;
}
/// <summary>
/// Determine if the supplied file data points to a music album
/// </summary>
/// <param name="path">The path.</param>
/// <param name="directoryService">The directory service.</param>
/// <param name="logger">The logger.</param>
/// <param name="fileSystem">The file system.</param>
/// <param name="libraryManager">The library manager.</param>
/// <returns><c>true</c> if [is music album] [the specified data]; otherwise, <c>false</c>.</returns>
public static bool IsMusicAlbum(string path, IDirectoryService directoryService, ILogger logger, IFileSystem fileSystem,
ILibraryManager libraryManager)
{
return ContainsMusic(directoryService.GetFileSystemEntries(path), true, directoryService, logger, fileSystem, libraryManager);
}
/// <summary>
/// Determine if the supplied resolve args should be considered a music album
/// </summary>
/// <param name="args">The args.</param>
/// <returns><c>true</c> if [is music album] [the specified args]; otherwise, <c>false</c>.</returns>
private bool IsMusicAlbum(ItemResolveArgs args)
{
// Args points to an album if parent is an Artist folder or it directly contains music
if (args.IsDirectory)
{
//if (args.Parent is MusicArtist) return true; //saves us from testing children twice
if (ContainsMusic(args.FileSystemChildren, true, args.DirectoryService, _logger, _fileSystem, _libraryManager)) return true;
}
return false;
}
/// <summary>
/// Determine if the supplied list contains what we should consider music
/// </summary>
/// <param name="list">The list.</param>
/// <param name="allowSubfolders">if set to <c>true</c> [allow subfolders].</param>
/// <param name="directoryService">The directory service.</param>
/// <param name="logger">The logger.</param>
/// <param name="fileSystem">The file system.</param>
/// <param name="libraryManager">The library manager.</param>
/// <returns><c>true</c> if the specified list contains music; otherwise, <c>false</c>.</returns>
private static bool ContainsMusic(IEnumerable<FileSystemInfo> list,
bool allowSubfolders,
IDirectoryService directoryService,
ILogger logger,
IFileSystem fileSystem,
ILibraryManager libraryManager)
{
var discSubfolderCount = 0;
foreach (var fileSystemInfo in list)
{
if ((fileSystemInfo.Attributes & FileAttributes.Directory) == FileAttributes.Directory)
{
if (allowSubfolders && IsAlbumSubfolder(fileSystemInfo, directoryService, logger, fileSystem, libraryManager))
{
discSubfolderCount++;
}
}
var fullName = fileSystemInfo.FullName;
if (libraryManager.IsAudioFile(fullName))
{
// Don't resolve these into audio files
if (string.Equals(fileSystem.GetFileNameWithoutExtension(fullName), BaseItem.ThemeSongFilename))
{
continue;
}
return true;
}
}
return discSubfolderCount > 0;
}
private static bool IsAlbumSubfolder(FileSystemInfo directory, IDirectoryService directoryService, ILogger logger, IFileSystem fileSystem, ILibraryManager libraryManager)
{
var path = directory.FullName;
if (IsMultiDiscFolder(path))
{
logger.Debug("Found multi-disc folder: " + path);
return ContainsMusic(directoryService.GetFileSystemEntries(path), false, directoryService, logger, fileSystem, libraryManager);
}
return false;
}
public static bool IsMultiDiscFolder(string path)
{
return IsMultiDiscAlbumFolder(path);
}
/// <summary>
/// Determines whether [is multi disc album folder] [the specified path].
/// </summary>
/// <param name="path">The path.</param>
/// <returns><c>true</c> if [is multi disc album folder] [the specified path]; otherwise, <c>false</c>.</returns>
private static bool IsMultiDiscAlbumFolder(string path)
{
var parser = new AlbumParser(new AudioOptions(), new Naming.Logging.NullLogger());
var result = parser.ParseMultiPart(path);
return result.IsMultiPart;
}
}
}
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