jellyfin/Emby.Server.Implementations/Playlists/PlaylistManager.cs
2020-08-21 22:01:19 +02:00

545 lines
20 KiB
C#

#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Entities;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Extensions;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Playlists;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Playlists;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using PlaylistsNET.Content;
using PlaylistsNET.Models;
using Genre = MediaBrowser.Controller.Entities.Genre;
using MusicAlbum = MediaBrowser.Controller.Entities.Audio.MusicAlbum;
namespace Emby.Server.Implementations.Playlists
{
public class PlaylistManager : IPlaylistManager
{
private readonly ILibraryManager _libraryManager;
private readonly IFileSystem _fileSystem;
private readonly ILibraryMonitor _iLibraryMonitor;
private readonly ILogger<PlaylistManager> _logger;
private readonly IUserManager _userManager;
private readonly IProviderManager _providerManager;
private readonly IConfiguration _appConfig;
public PlaylistManager(
ILibraryManager libraryManager,
IFileSystem fileSystem,
ILibraryMonitor iLibraryMonitor,
ILogger<PlaylistManager> logger,
IUserManager userManager,
IProviderManager providerManager,
IConfiguration appConfig)
{
_libraryManager = libraryManager;
_fileSystem = fileSystem;
_iLibraryMonitor = iLibraryMonitor;
_logger = logger;
_userManager = userManager;
_providerManager = providerManager;
_appConfig = appConfig;
}
public IEnumerable<Playlist> GetPlaylists(Guid userId)
{
var user = _userManager.GetUserById(userId);
return GetPlaylistsFolder(userId).GetChildren(user, true).OfType<Playlist>();
}
public async Task<PlaylistCreationResult> CreatePlaylist(PlaylistCreationRequest options)
{
var name = options.Name;
var folderName = _fileSystem.GetValidFilename(name);
var parentFolder = GetPlaylistsFolder(Guid.Empty);
if (parentFolder == null)
{
throw new ArgumentException();
}
if (string.IsNullOrEmpty(options.MediaType))
{
foreach (var itemId in options.ItemIdList)
{
var item = _libraryManager.GetItemById(itemId);
if (item == null)
{
throw new ArgumentException("No item exists with the supplied Id");
}
if (!string.IsNullOrEmpty(item.MediaType))
{
options.MediaType = item.MediaType;
}
else if (item is MusicArtist || item is MusicAlbum || item is MusicGenre)
{
options.MediaType = MediaType.Audio;
}
else if (item is Genre)
{
options.MediaType = MediaType.Video;
}
else
{
if (item is Folder folder)
{
options.MediaType = folder.GetRecursiveChildren(i => !i.IsFolder && i.SupportsAddingToPlaylist)
.Select(i => i.MediaType)
.FirstOrDefault(i => !string.IsNullOrEmpty(i));
}
}
if (!string.IsNullOrEmpty(options.MediaType))
{
break;
}
}
}
if (string.IsNullOrEmpty(options.MediaType))
{
options.MediaType = "Audio";
}
var user = _userManager.GetUserById(options.UserId);
var path = Path.Combine(parentFolder.Path, folderName);
path = GetTargetPath(path);
_iLibraryMonitor.ReportFileSystemChangeBeginning(path);
try
{
Directory.CreateDirectory(path);
var playlist = new Playlist
{
Name = name,
Path = path,
Shares = new[]
{
new Share
{
UserId = options.UserId.Equals(Guid.Empty) ? null : options.UserId.ToString("N", CultureInfo.InvariantCulture),
CanEdit = true
}
}
};
playlist.SetMediaType(options.MediaType);
parentFolder.AddChild(playlist, CancellationToken.None);
await playlist.RefreshMetadata(new MetadataRefreshOptions(new DirectoryService(_fileSystem)) { ForceSave = true }, CancellationToken.None)
.ConfigureAwait(false);
if (options.ItemIdList.Length > 0)
{
AddToPlaylistInternal(playlist.Id.ToString("N", CultureInfo.InvariantCulture), options.ItemIdList, user, new DtoOptions(false)
{
EnableImages = true
});
}
return new PlaylistCreationResult(playlist.Id.ToString("N", CultureInfo.InvariantCulture));
}
finally
{
// Refresh handled internally
_iLibraryMonitor.ReportFileSystemChangeComplete(path, false);
}
}
private string GetTargetPath(string path)
{
while (Directory.Exists(path))
{
path += "1";
}
return path;
}
private List<BaseItem> GetPlaylistItems(IEnumerable<Guid> itemIds, string playlistMediaType, User user, DtoOptions options)
{
var items = itemIds.Select(i => _libraryManager.GetItemById(i)).Where(i => i != null);
return Playlist.GetPlaylistItems(playlistMediaType, items, user, options);
}
public Task AddToPlaylistAsync(string playlistId, ICollection<Guid> itemIds, Guid userId)
{
var user = userId.Equals(Guid.Empty) ? null : _userManager.GetUserById(userId);
return AddToPlaylistInternal(playlistId, itemIds, user, new DtoOptions(false)
{
EnableImages = true
});
}
private async Task AddToPlaylistInternal(string playlistId, ICollection<Guid> newItemIds, User user, DtoOptions options)
{
// Retrieve the existing playlist
var playlist = _libraryManager.GetItemById(playlistId) as Playlist
?? throw new ArgumentException("No Playlist exists with Id " + playlistId);
// Retrieve all the items to be added to the playlist
var newItems = GetPlaylistItems(newItemIds, playlist.MediaType, user, options)
.Where(i => i.SupportsAddingToPlaylist);
// Filter out duplicate items, if necessary
if (!_appConfig.DoPlaylistsAllowDuplicates())
{
var existingIds = playlist.LinkedChildren.Select(c => c.ItemId).ToHashSet();
newItems = newItems
.Where(i => !existingIds.Contains(i.Id))
.Distinct();
}
// Create a list of the new linked children to add to the playlist
var childrenToAdd = newItems
.Select(i => LinkedChild.Create(i))
.ToList();
// Log duplicates that have been ignored, if any
int numDuplicates = newItemIds.Count - childrenToAdd.Count;
if (numDuplicates > 0)
{
_logger.LogWarning("Ignored adding {DuplicateCount} duplicate items to playlist {PlaylistName}.", numDuplicates, playlist.Name);
}
// Do nothing else if there are no items to add to the playlist
if (childrenToAdd.Count == 0)
{
return;
}
// Create a new array with the updated playlist items
var newLinkedChildren = new LinkedChild[playlist.LinkedChildren.Length + childrenToAdd.Count];
playlist.LinkedChildren.CopyTo(newLinkedChildren, 0);
childrenToAdd.CopyTo(newLinkedChildren, playlist.LinkedChildren.Length);
// Update the playlist in the repository
playlist.LinkedChildren = newLinkedChildren;
await playlist.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
// Update the playlist on disk
if (playlist.IsFile)
{
SavePlaylistFile(playlist);
}
// Refresh playlist metadata
_providerManager.QueueRefresh(
playlist.Id,
new MetadataRefreshOptions(new DirectoryService(_fileSystem))
{
ForceSave = true
},
RefreshPriority.High);
}
public async Task RemoveFromPlaylistAsync(string playlistId, IEnumerable<string> entryIds)
{
if (!(_libraryManager.GetItemById(playlistId) is Playlist playlist))
{
throw new ArgumentException("No Playlist exists with the supplied Id");
}
var children = playlist.GetManageableItems().ToList();
var idList = entryIds.ToList();
var removals = children.Where(i => idList.Contains(i.Item1.Id));
playlist.LinkedChildren = children.Except(removals)
.Select(i => i.Item1)
.ToArray();
await playlist.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
if (playlist.IsFile)
{
SavePlaylistFile(playlist);
}
_providerManager.QueueRefresh(
playlist.Id,
new MetadataRefreshOptions(new DirectoryService(_fileSystem))
{
ForceSave = true
},
RefreshPriority.High);
}
public async Task MoveItemAsync(string playlistId, string entryId, int newIndex)
{
if (!(_libraryManager.GetItemById(playlistId) is Playlist playlist))
{
throw new ArgumentException("No Playlist exists with the supplied Id");
}
var children = playlist.GetManageableItems().ToList();
var oldIndex = children.FindIndex(i => string.Equals(entryId, i.Item1.Id, StringComparison.OrdinalIgnoreCase));
if (oldIndex == newIndex)
{
return;
}
var item = playlist.LinkedChildren[oldIndex];
var newList = playlist.LinkedChildren.ToList();
newList.Remove(item);
if (newIndex >= newList.Count)
{
newList.Add(item);
}
else
{
newList.Insert(newIndex, item);
}
playlist.LinkedChildren = newList.ToArray();
await playlist.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, CancellationToken.None).ConfigureAwait(false);
if (playlist.IsFile)
{
SavePlaylistFile(playlist);
}
}
private void SavePlaylistFile(Playlist item)
{
// this is probably best done as a metadata provider
// saving a file over itself will require some work to prevent this from happening when not needed
var playlistPath = item.Path;
var extension = Path.GetExtension(playlistPath);
if (string.Equals(".wpl", extension, StringComparison.OrdinalIgnoreCase))
{
var playlist = new WplPlaylist();
foreach (var child in item.GetLinkedChildren())
{
var entry = new WplPlaylistEntry()
{
Path = NormalizeItemPath(playlistPath, child.Path),
TrackTitle = child.Name,
AlbumTitle = child.Album
};
if (child is IHasAlbumArtist hasAlbumArtist)
{
entry.AlbumArtist = hasAlbumArtist.AlbumArtists.Count > 0 ? hasAlbumArtist.AlbumArtists[0] : null;
}
if (child is IHasArtist hasArtist)
{
entry.TrackArtist = hasArtist.Artists.Count > 0 ? hasArtist.Artists[0] : null;
}
if (child.RunTimeTicks.HasValue)
{
entry.Duration = TimeSpan.FromTicks(child.RunTimeTicks.Value);
}
playlist.PlaylistEntries.Add(entry);
}
string text = new WplContent().ToText(playlist);
File.WriteAllText(playlistPath, text);
}
if (string.Equals(".zpl", extension, StringComparison.OrdinalIgnoreCase))
{
var playlist = new ZplPlaylist();
foreach (var child in item.GetLinkedChildren())
{
var entry = new ZplPlaylistEntry()
{
Path = NormalizeItemPath(playlistPath, child.Path),
TrackTitle = child.Name,
AlbumTitle = child.Album
};
if (child is IHasAlbumArtist hasAlbumArtist)
{
entry.AlbumArtist = hasAlbumArtist.AlbumArtists.Count > 0 ? hasAlbumArtist.AlbumArtists[0] : null;
}
if (child is IHasArtist hasArtist)
{
entry.TrackArtist = hasArtist.Artists.Count > 0 ? hasArtist.Artists[0] : null;
}
if (child.RunTimeTicks.HasValue)
{
entry.Duration = TimeSpan.FromTicks(child.RunTimeTicks.Value);
}
playlist.PlaylistEntries.Add(entry);
}
string text = new ZplContent().ToText(playlist);
File.WriteAllText(playlistPath, text);
}
if (string.Equals(".m3u", extension, StringComparison.OrdinalIgnoreCase))
{
var playlist = new M3uPlaylist
{
IsExtended = true
};
foreach (var child in item.GetLinkedChildren())
{
var entry = new M3uPlaylistEntry()
{
Path = NormalizeItemPath(playlistPath, child.Path),
Title = child.Name,
Album = child.Album
};
if (child is IHasAlbumArtist hasAlbumArtist)
{
entry.AlbumArtist = hasAlbumArtist.AlbumArtists.Count > 0 ? hasAlbumArtist.AlbumArtists[0] : null;
}
if (child.RunTimeTicks.HasValue)
{
entry.Duration = TimeSpan.FromTicks(child.RunTimeTicks.Value);
}
playlist.PlaylistEntries.Add(entry);
}
string text = new M3uContent().ToText(playlist);
File.WriteAllText(playlistPath, text);
}
if (string.Equals(".m3u8", extension, StringComparison.OrdinalIgnoreCase))
{
var playlist = new M3uPlaylist();
playlist.IsExtended = true;
foreach (var child in item.GetLinkedChildren())
{
var entry = new M3uPlaylistEntry()
{
Path = NormalizeItemPath(playlistPath, child.Path),
Title = child.Name,
Album = child.Album
};
if (child is IHasAlbumArtist hasAlbumArtist)
{
entry.AlbumArtist = hasAlbumArtist.AlbumArtists.Count > 0 ? hasAlbumArtist.AlbumArtists[0] : null;
}
if (child.RunTimeTicks.HasValue)
{
entry.Duration = TimeSpan.FromTicks(child.RunTimeTicks.Value);
}
playlist.PlaylistEntries.Add(entry);
}
string text = new M3uContent().ToText(playlist);
File.WriteAllText(playlistPath, text);
}
if (string.Equals(".pls", extension, StringComparison.OrdinalIgnoreCase))
{
var playlist = new PlsPlaylist();
foreach (var child in item.GetLinkedChildren())
{
var entry = new PlsPlaylistEntry()
{
Path = NormalizeItemPath(playlistPath, child.Path),
Title = child.Name
};
if (child.RunTimeTicks.HasValue)
{
entry.Length = TimeSpan.FromTicks(child.RunTimeTicks.Value);
}
playlist.PlaylistEntries.Add(entry);
}
string text = new PlsContent().ToText(playlist);
File.WriteAllText(playlistPath, text);
}
}
private string NormalizeItemPath(string playlistPath, string itemPath)
{
return MakeRelativePath(Path.GetDirectoryName(playlistPath), itemPath);
}
private static string MakeRelativePath(string folderPath, string fileAbsolutePath)
{
if (string.IsNullOrEmpty(folderPath))
{
throw new ArgumentException("Folder path was null or empty.", nameof(folderPath));
}
if (string.IsNullOrEmpty(fileAbsolutePath))
{
throw new ArgumentException("File absolute path was null or empty.", nameof(fileAbsolutePath));
}
if (!folderPath.EndsWith(Path.DirectorySeparatorChar))
{
folderPath += Path.DirectorySeparatorChar;
}
var folderUri = new Uri(folderPath);
var fileAbsoluteUri = new Uri(fileAbsolutePath);
// path can't be made relative
if (folderUri.Scheme != fileAbsoluteUri.Scheme)
{
return fileAbsolutePath;
}
var relativeUri = folderUri.MakeRelativeUri(fileAbsoluteUri);
string relativePath = Uri.UnescapeDataString(relativeUri.ToString());
if (fileAbsoluteUri.Scheme.Equals("file", StringComparison.CurrentCultureIgnoreCase))
{
relativePath = relativePath.Replace(Path.AltDirectorySeparatorChar, Path.DirectorySeparatorChar);
}
return relativePath;
}
public Folder GetPlaylistsFolder(Guid userId)
{
const string TypeName = "PlaylistsFolder";
return _libraryManager.RootFolder.Children.OfType<Folder>().FirstOrDefault(i => string.Equals(i.GetType().Name, TypeName, StringComparison.Ordinal)) ??
_libraryManager.GetUserRootFolder().Children.OfType<Folder>().FirstOrDefault(i => string.Equals(i.GetType().Name, TypeName, StringComparison.Ordinal));
}
}
}