jellyfin-server/Emby.Server.Implementations/Library/MusicManager.cs

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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Playlists;
using System;
using System.Collections.Generic;
using System.Linq;
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using MediaBrowser.Controller.Dto;
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using MediaBrowser.Model.Querying;
namespace Emby.Server.Implementations.Library
{
public class MusicManager : IMusicManager
{
private readonly ILibraryManager _libraryManager;
public MusicManager(ILibraryManager libraryManager)
{
_libraryManager = libraryManager;
}
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public IEnumerable<Audio> GetInstantMixFromSong(Audio item, User user, DtoOptions dtoOptions)
{
var list = new List<Audio>
{
item
};
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return list.Concat(GetInstantMixFromGenres(item.Genres, user, dtoOptions));
}
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public IEnumerable<Audio> GetInstantMixFromArtist(MusicArtist item, User user, DtoOptions dtoOptions)
{
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return GetInstantMixFromGenres(item.Genres, user, dtoOptions);
}
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public IEnumerable<Audio> GetInstantMixFromAlbum(MusicAlbum item, User user, DtoOptions dtoOptions)
{
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return GetInstantMixFromGenres(item.Genres, user, dtoOptions);
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}
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public IEnumerable<Audio> GetInstantMixFromFolder(Folder item, User user, DtoOptions dtoOptions)
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{
var genres = item
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.GetRecursiveChildren(user, new InternalItemsQuery(user)
{
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IncludeItemTypes = new[] { typeof(Audio).Name },
DtoOptions = dtoOptions
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})
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.Cast<Audio>()
.SelectMany(i => i.Genres)
.Concat(item.Genres)
.DistinctNames();
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return GetInstantMixFromGenres(genres, user, dtoOptions);
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}
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public IEnumerable<Audio> GetInstantMixFromPlaylist(Playlist item, User user, DtoOptions dtoOptions)
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{
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return GetInstantMixFromGenres(item.Genres, user, dtoOptions);
}
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public IEnumerable<Audio> GetInstantMixFromGenres(IEnumerable<string> genres, User user, DtoOptions dtoOptions)
{
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var genreIds = genres.DistinctNames().Select(i =>
{
try
{
return _libraryManager.GetMusicGenre(i).Id.ToString("N");
}
catch
{
return null;
}
}).Where(i => i != null);
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return GetInstantMixFromGenreIds(genreIds, user, dtoOptions);
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}
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public IEnumerable<Audio> GetInstantMixFromGenreIds(IEnumerable<string> genreIds, User user, DtoOptions dtoOptions)
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{
return _libraryManager.GetItemList(new InternalItemsQuery(user)
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{
IncludeItemTypes = new[] { typeof(Audio).Name },
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GenreIds = genreIds.ToArray(),
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Limit = 200,
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SortBy = new[] { ItemSortBy.Random },
DtoOptions = dtoOptions
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}).Cast<Audio>();
}
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public IEnumerable<Audio> GetInstantMixFromItem(BaseItem item, User user, DtoOptions dtoOptions)
{
var genre = item as MusicGenre;
if (genre != null)
{
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return GetInstantMixFromGenreIds(new[] { item.Id.ToString("N") }, user, dtoOptions);
}
var playlist = item as Playlist;
if (playlist != null)
{
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return GetInstantMixFromPlaylist(playlist, user, dtoOptions);
}
var album = item as MusicAlbum;
if (album != null)
{
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return GetInstantMixFromAlbum(album, user, dtoOptions);
}
var artist = item as MusicArtist;
if (artist != null)
{
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return GetInstantMixFromArtist(artist, user, dtoOptions);
}
var song = item as Audio;
if (song != null)
{
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return GetInstantMixFromSong(song, user, dtoOptions);
}
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var folder = item as Folder;
if (folder != null)
{
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return GetInstantMixFromFolder(folder, user, dtoOptions);
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}
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return new Audio[] { };
}
}
}