mirror of
https://github.com/jellyfin/jellyfin.git
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450 lines
15 KiB
C#
450 lines
15 KiB
C#
using MediaBrowser.Common;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller.Entities.Audio;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Providers;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Xml;
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using MediaBrowser.Model.Serialization;
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namespace MediaBrowser.Providers.Music
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{
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public class MusicBrainzAlbumProvider : IRemoteMetadataProvider<MusicAlbum, AlbumInfo>, IHasOrder
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{
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internal static MusicBrainzAlbumProvider Current;
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private readonly IHttpClient _httpClient;
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private readonly IApplicationHost _appHost;
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private readonly ILogger _logger;
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private readonly IJsonSerializer _json;
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public static string MusicBrainzBaseUrl = "https://www.musicbrainz.org";
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public MusicBrainzAlbumProvider(IHttpClient httpClient, IApplicationHost appHost, ILogger logger, IJsonSerializer json)
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{
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_httpClient = httpClient;
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_appHost = appHost;
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_logger = logger;
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_json = json;
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Current = this;
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}
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public async Task<IEnumerable<RemoteSearchResult>> GetSearchResults(AlbumInfo searchInfo, CancellationToken cancellationToken)
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{
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var releaseId = searchInfo.GetReleaseId();
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string url = null;
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var isNameSearch = false;
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if (!string.IsNullOrEmpty(releaseId))
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{
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url = string.Format("/ws/2/release/?query=reid:{0}", releaseId);
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}
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else
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{
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var artistMusicBrainzId = searchInfo.GetMusicBrainzArtistId();
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if (!string.IsNullOrWhiteSpace(artistMusicBrainzId))
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{
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url = string.Format("/ws/2/release/?query=\"{0}\" AND arid:{1}",
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WebUtility.UrlEncode(searchInfo.Name),
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artistMusicBrainzId);
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}
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else
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{
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isNameSearch = true;
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url = string.Format("/ws/2/release/?query=\"{0}\" AND artist:\"{1}\"",
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WebUtility.UrlEncode(searchInfo.Name),
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WebUtility.UrlEncode(searchInfo.GetAlbumArtist()));
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}
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}
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if (!string.IsNullOrWhiteSpace(url))
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{
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var doc = await GetMusicBrainzResponse(url, isNameSearch, cancellationToken).ConfigureAwait(false);
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return GetResultsFromResponse(doc);
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}
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return new List<RemoteSearchResult>();
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}
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private IEnumerable<RemoteSearchResult> GetResultsFromResponse(XmlDocument doc)
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{
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return ReleaseResult.Parse(doc).Select(i =>
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{
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var result = new RemoteSearchResult
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{
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Name = i.Title
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};
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if (!string.IsNullOrWhiteSpace(i.ReleaseId))
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{
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result.SetProviderId(MetadataProviders.MusicBrainzAlbum, i.ReleaseId);
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}
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if (!string.IsNullOrWhiteSpace(i.ReleaseGroupId))
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{
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result.SetProviderId(MetadataProviders.MusicBrainzAlbum, i.ReleaseGroupId);
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}
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return result;
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});
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}
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public async Task<MetadataResult<MusicAlbum>> GetMetadata(AlbumInfo id, CancellationToken cancellationToken)
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{
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var releaseId = id.GetReleaseId();
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var releaseGroupId = id.GetReleaseGroupId();
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var result = new MetadataResult<MusicAlbum>
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{
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Item = new MusicAlbum()
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};
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if (string.IsNullOrEmpty(releaseId))
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{
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var artistMusicBrainzId = id.GetMusicBrainzArtistId();
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var releaseResult = await GetReleaseResult(artistMusicBrainzId, id.GetAlbumArtist(), id.Name, cancellationToken).ConfigureAwait(false);
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if (!string.IsNullOrEmpty(releaseResult.ReleaseId))
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{
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releaseId = releaseResult.ReleaseId;
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result.HasMetadata = true;
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}
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if (!string.IsNullOrEmpty(releaseResult.ReleaseGroupId))
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{
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releaseGroupId = releaseResult.ReleaseGroupId;
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result.HasMetadata = true;
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}
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}
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// If we have a release Id but not a release group Id...
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if (!string.IsNullOrEmpty(releaseId) && string.IsNullOrEmpty(releaseGroupId))
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{
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releaseGroupId = await GetReleaseGroupId(releaseId, cancellationToken).ConfigureAwait(false);
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result.HasMetadata = true;
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}
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if (!string.IsNullOrEmpty(releaseId) || !string.IsNullOrEmpty(releaseGroupId))
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{
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result.HasMetadata = true;
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}
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if (result.HasMetadata)
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{
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if (!string.IsNullOrEmpty(releaseId))
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{
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result.Item.SetProviderId(MetadataProviders.MusicBrainzAlbum, releaseId);
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}
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if (!string.IsNullOrEmpty(releaseGroupId))
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{
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result.Item.SetProviderId(MetadataProviders.MusicBrainzReleaseGroup, releaseGroupId);
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}
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}
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return result;
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}
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public string Name
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{
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get { return "MusicBrainz"; }
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}
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private Task<ReleaseResult> GetReleaseResult(string artistMusicBrainId, string artistName, string albumName, CancellationToken cancellationToken)
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{
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if (!string.IsNullOrEmpty(artistMusicBrainId))
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{
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return GetReleaseResult(albumName, artistMusicBrainId, cancellationToken);
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}
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if (string.IsNullOrWhiteSpace(artistName))
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{
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return Task.FromResult(new ReleaseResult());
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}
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return GetReleaseResultByArtistName(albumName, artistName, cancellationToken);
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}
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private async Task<ReleaseResult> GetReleaseResult(string albumName, string artistId, CancellationToken cancellationToken)
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{
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var url = string.Format("/ws/2/release/?query=\"{0}\" AND arid:{1}",
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WebUtility.UrlEncode(albumName),
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artistId);
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var doc = await GetMusicBrainzResponse(url, true, cancellationToken).ConfigureAwait(false);
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return ReleaseResult.Parse(doc, 1).FirstOrDefault();
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}
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private async Task<ReleaseResult> GetReleaseResultByArtistName(string albumName, string artistName, CancellationToken cancellationToken)
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{
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var url = string.Format("/ws/2/release/?query=\"{0}\" AND artist:\"{1}\"",
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WebUtility.UrlEncode(albumName),
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WebUtility.UrlEncode(artistName));
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var doc = await GetMusicBrainzResponse(url, true, cancellationToken).ConfigureAwait(false);
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return ReleaseResult.Parse(doc, 1).FirstOrDefault();
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}
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private class ReleaseResult
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{
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public string ReleaseId;
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public string ReleaseGroupId;
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public string Title;
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public static List<ReleaseResult> Parse(XmlDocument doc, int? limit = null)
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{
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var docElem = doc.DocumentElement;
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var list = new List<ReleaseResult>();
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if (docElem == null)
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{
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return list;
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}
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var releaseList = docElem.FirstChild;
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if (releaseList == null)
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{
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return list;
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}
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var nodes = releaseList.ChildNodes;
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if (nodes != null)
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{
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foreach (var node in nodes.Cast<XmlNode>())
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{
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if (string.Equals(node.Name, "release", StringComparison.OrdinalIgnoreCase))
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{
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var releaseId = node.Attributes["id"].Value;
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var releaseGroupId = GetReleaseGroupIdFromReleaseNode(node);
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list.Add(new ReleaseResult
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{
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ReleaseId = releaseId,
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ReleaseGroupId = releaseGroupId,
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Title = GetTitleFromReleaseNode(node)
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});
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if (limit.HasValue && list.Count >= limit.Value)
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{
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break;
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}
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}
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}
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}
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return list;
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}
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private static string GetTitleFromReleaseNode(XmlNode node)
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{
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var subNodes = node.ChildNodes;
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if (subNodes != null)
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{
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foreach (var subNode in subNodes.Cast<XmlNode>())
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{
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if (string.Equals(subNode.Name, "title", StringComparison.OrdinalIgnoreCase))
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{
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return subNode.InnerText;
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}
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}
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}
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return null;
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}
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private static string GetReleaseGroupIdFromReleaseNode(XmlNode node)
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{
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var subNodes = node.ChildNodes;
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if (subNodes != null)
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{
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foreach (var subNode in subNodes.Cast<XmlNode>())
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{
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if (string.Equals(subNode.Name, "release-group", StringComparison.OrdinalIgnoreCase))
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{
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return subNode.Attributes["id"].Value;
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}
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}
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}
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return null;
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}
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}
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/// <summary>
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/// Gets the release group id internal.
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/// </summary>
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/// <param name="releaseEntryId">The release entry id.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{System.String}.</returns>
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private async Task<string> GetReleaseGroupId(string releaseEntryId, CancellationToken cancellationToken)
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{
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var url = string.Format("/ws/2/release-group/?query=reid:{0}", releaseEntryId);
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var doc = await GetMusicBrainzResponse(url, false, cancellationToken).ConfigureAwait(false);
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var docElem = doc.DocumentElement;
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if (docElem == null)
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{
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return null;
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}
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var releaseList = docElem.FirstChild;
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if (releaseList == null)
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{
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return null;
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}
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var nodes = releaseList.ChildNodes;
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if (nodes != null)
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{
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foreach (var node in nodes.Cast<XmlNode>())
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{
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if (string.Equals(node.Name, "release-group", StringComparison.OrdinalIgnoreCase))
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{
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return node.Attributes["id"].Value;
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}
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}
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}
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return null;
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}
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/// <summary>
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/// The _music brainz resource pool
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/// </summary>
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private readonly SemaphoreSlim _musicBrainzResourcePool = new SemaphoreSlim(1, 1);
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private long _lastMbzUrlQueryTicks = 0;
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private List<MbzUrl> _mbzUrls = null;
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private MbzUrl _chosenUrl;
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private async Task<MbzUrl> GetMbzUrl()
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{
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if (_chosenUrl == null || _mbzUrls == null || (DateTime.UtcNow.Ticks - _lastMbzUrlQueryTicks) > TimeSpan.FromHours(12).Ticks)
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{
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var urls = await RefreshMzbUrls().ConfigureAwait(false);
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if (urls.Count > 1)
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{
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_chosenUrl = urls[new Random().Next(0, urls.Count)];
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}
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else
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{
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_chosenUrl = urls[0];
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}
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}
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return _chosenUrl;
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}
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private async Task<List<MbzUrl>> RefreshMzbUrls()
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{
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List<MbzUrl> list;
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try
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{
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var options = new HttpRequestOptions
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{
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Url = "https://mb3admin.com/admin/service/standards/musicBrainzUrls",
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UserAgent = _appHost.Name + "/" + _appHost.ApplicationVersion
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};
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using (var stream = await _httpClient.Get(options).ConfigureAwait(false))
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{
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list = _json.DeserializeFromStream<List<MbzUrl>>(stream);
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}
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_lastMbzUrlQueryTicks = DateTime.UtcNow.Ticks;
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}
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catch (Exception ex)
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{
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_logger.ErrorException("Error getting music brainz info", ex);
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list = new List<MbzUrl>
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{
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new MbzUrl
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{
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url = MusicBrainzBaseUrl,
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throttleMs = 1000
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}
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};
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}
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_mbzUrls = list.ToList();
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return list;
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}
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/// <summary>
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/// Gets the music brainz response.
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/// </summary>
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/// <param name="url">The URL.</param>
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/// <param name="isSearch">if set to <c>true</c> [is search].</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{XmlDocument}.</returns>
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internal async Task<XmlDocument> GetMusicBrainzResponse(string url, bool isSearch, CancellationToken cancellationToken)
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{
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var urlInfo = await GetMbzUrl().ConfigureAwait(false);
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if (urlInfo.throttleMs > 0)
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{
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// MusicBrainz is extremely adamant about limiting to one request per second
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await Task.Delay(urlInfo.throttleMs, cancellationToken).ConfigureAwait(false);
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}
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url = urlInfo.url.TrimEnd('/') + url;
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var doc = new XmlDocument();
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var options = new HttpRequestOptions
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{
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Url = url,
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CancellationToken = cancellationToken,
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UserAgent = _appHost.Name + "/" + _appHost.ApplicationVersion,
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ResourcePool = _musicBrainzResourcePool
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};
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using (var xml = await _httpClient.Get(options).ConfigureAwait(false))
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{
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using (var oReader = new StreamReader(xml, Encoding.UTF8))
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{
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doc.Load(oReader);
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}
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}
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return doc;
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}
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public int Order
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{
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get { return 0; }
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}
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public Task<HttpResponseInfo> GetImageResponse(string url, CancellationToken cancellationToken)
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{
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throw new NotImplementedException();
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}
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internal class MbzUrl
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{
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public string url { get; set; }
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public int throttleMs { get; set; }
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}
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}
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}
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