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#nullable disable
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Enums;
using Jellyfin.Extensions;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Playlists;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.IO;
using Microsoft.Extensions.Logging;
using PlaylistsNET.Content;
namespace MediaBrowser.Providers.Playlists;
/// <summary>
/// Local playlist provider.
/// </summary>
public class PlaylistItemsProvider : ILocalMetadataProvider<Playlist>,
IHasOrder,
IForcedProvider,
IHasItemChangeMonitor
{
private readonly IFileSystem _fileSystem;
private readonly ILibraryManager _libraryManager;
private readonly ILogger<PlaylistItemsProvider> _logger;
private readonly CollectionType[] _ignoredCollections = [CollectionType.livetv, CollectionType.boxsets, CollectionType.playlists];
/// <summary>
/// Initializes a new instance of the <see cref="PlaylistItemsProvider"/> class.
/// </summary>
/// <param name="logger">Instance of the <see cref="ILogger{PlaylistItemsProvider}"/> interface.</param>
/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
/// <param name="fileSystem">Instance of the <see cref="IFileSystem"/> interface.</param>
public PlaylistItemsProvider(ILogger<PlaylistItemsProvider> logger, ILibraryManager libraryManager, IFileSystem fileSystem)
{
_logger = logger;
_libraryManager = libraryManager;
_fileSystem = fileSystem;
}
/// <inheritdoc />
public string Name => "Playlist Item Provider";
/// <inheritdoc />
public int Order => 100;
/// <inheritdoc />
public Task<MetadataResult<Playlist>> GetMetadata(
ItemInfo info,
IDirectoryService directoryService,
CancellationToken cancellationToken)
{
var result = new MetadataResult<Playlist>()
{
Item = new Playlist
{
Path = info.Path
}
};
Fetch(result);
return Task.FromResult(result);
}
private void Fetch(MetadataResult<Playlist> result)
{
var item = result.Item;
var path = item.Path;
if (!Playlist.IsPlaylistFile(path))
{
return;
}
var extension = Path.GetExtension(path);
if (!Playlist.SupportedExtensions.Contains(extension ?? string.Empty, StringComparison.OrdinalIgnoreCase))
{
return;
}
var items = GetItems(path, extension).ToArray();
if (items.Length > 0)
{
result.HasMetadata = true;
item.LinkedChildren = items;
}
return;
}
private IEnumerable<LinkedChild> GetItems(string path, string extension)
{
var libraryRoots = _libraryManager.GetUserRootFolder().Children
.OfType<CollectionFolder>()
.Where(f => f.CollectionType.HasValue && !_ignoredCollections.Contains(f.CollectionType.Value))
.SelectMany(f => f.PhysicalLocations)
.Distinct()
.ToList();
using (var stream = File.OpenRead(path))
{
if (string.Equals(".wpl", extension, StringComparison.OrdinalIgnoreCase))
{
return GetWplItems(stream, path, libraryRoots);
}
if (string.Equals(".zpl", extension, StringComparison.OrdinalIgnoreCase))
{
return GetZplItems(stream, path, libraryRoots);
}
if (string.Equals(".m3u", extension, StringComparison.OrdinalIgnoreCase))
{
return GetM3uItems(stream, path, libraryRoots);
}
if (string.Equals(".m3u8", extension, StringComparison.OrdinalIgnoreCase))
{
return GetM3uItems(stream, path, libraryRoots);
}
if (string.Equals(".pls", extension, StringComparison.OrdinalIgnoreCase))
{
return GetPlsItems(stream, path, libraryRoots);
}
}
return Enumerable.Empty<LinkedChild>();
}
private IEnumerable<LinkedChild> GetPlsItems(Stream stream, string playlistPath, List<string> libraryRoots)
{
var content = new PlsContent();
var playlist = content.GetFromStream(stream);
return playlist.PlaylistEntries
.Select(i => GetLinkedChild(i.Path, playlistPath, libraryRoots))
.Where(i => i is not null);
}
private IEnumerable<LinkedChild> GetM3uItems(Stream stream, string playlistPath, List<string> libraryRoots)
{
var content = new M3uContent();
var playlist = content.GetFromStream(stream);
return playlist.PlaylistEntries
.Select(i => GetLinkedChild(i.Path, playlistPath, libraryRoots))
.Where(i => i is not null);
}
private IEnumerable<LinkedChild> GetZplItems(Stream stream, string playlistPath, List<string> libraryRoots)
{
var content = new ZplContent();
var playlist = content.GetFromStream(stream);
return playlist.PlaylistEntries
.Select(i => GetLinkedChild(i.Path, playlistPath, libraryRoots))
.Where(i => i is not null);
}
private IEnumerable<LinkedChild> GetWplItems(Stream stream, string playlistPath, List<string> libraryRoots)
{
var content = new WplContent();
var playlist = content.GetFromStream(stream);
return playlist.PlaylistEntries
.Select(i => GetLinkedChild(i.Path, playlistPath, libraryRoots))
.Where(i => i is not null);
}
private LinkedChild GetLinkedChild(string itemPath, string playlistPath, List<string> libraryRoots)
{
if (TryGetPlaylistItemPath(itemPath, playlistPath, libraryRoots, out var parsedPath))
{
return new LinkedChild
{
Path = parsedPath,
Type = LinkedChildType.Manual
};
}
return null;
}
private bool TryGetPlaylistItemPath(string itemPath, string playlistPath, List<string> libraryPaths, out string path)
{
path = null;
string pathToCheck = _fileSystem.MakeAbsolutePath(Path.GetDirectoryName(playlistPath), itemPath);
if (!File.Exists(pathToCheck))
{
return false;
}
foreach (var libraryPath in libraryPaths)
{
if (pathToCheck.StartsWith(libraryPath, StringComparison.OrdinalIgnoreCase))
{
path = pathToCheck;
return true;
}
}
return false;
}
/// <inheritdoc />
public bool HasChanged(BaseItem item, IDirectoryService directoryService)
{
var path = item.Path;
if (!string.IsNullOrWhiteSpace(path) && item.IsFileProtocol)
{
var file = directoryService.GetFile(path);
if (file is not null && item.HasChanged(file.LastWriteTimeUtc))
{
_logger.LogDebug("Refreshing {Path} due to date modified timestamp change.", path);
return true;
}
}
return false;
}
}
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