jellyfin/MediaBrowser.Providers/Music/MusicBrainzArtistProvider.cs
2016-04-23 06:47:15 +02:00

183 lines
6.3 KiB
C#

using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Providers;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Xml;
namespace MediaBrowser.Providers.Music
{
public class MusicBrainzArtistProvider : IRemoteMetadataProvider<MusicArtist, ArtistInfo>
{
public async Task<IEnumerable<RemoteSearchResult>> GetSearchResults(ArtistInfo searchInfo, CancellationToken cancellationToken)
{
var musicBrainzId = searchInfo.GetMusicBrainzArtistId();
if (!string.IsNullOrWhiteSpace(musicBrainzId))
{
var url = string.Format("https://www.musicbrainz.org/ws/2/artist/?query=arid:{0}", musicBrainzId);
var doc = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, false, cancellationToken)
.ConfigureAwait(false);
return GetResultsFromResponse(doc);
}
else
{
// They seem to throw bad request failures on any term with a slash
var nameToSearch = searchInfo.Name.Replace('/', ' ');
var url = String.Format("https://www.musicbrainz.org/ws/2/artist/?query=artist:\"{0}\"", UrlEncode(nameToSearch));
var doc = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, true, cancellationToken).ConfigureAwait(false);
var results = GetResultsFromResponse(doc).ToList();
if (results.Count > 0)
{
return results;
}
if (HasDiacritics(searchInfo.Name))
{
// Try again using the search with accent characters url
url = String.Format("https://www.musicbrainz.org/ws/2/artist/?query=artistaccent:\"{0}\"", UrlEncode(nameToSearch));
doc = await MusicBrainzAlbumProvider.Current.GetMusicBrainzResponse(url, true, cancellationToken).ConfigureAwait(false);
return GetResultsFromResponse(doc);
}
}
return new List<RemoteSearchResult>();
}
private IEnumerable<RemoteSearchResult> GetResultsFromResponse(XmlDocument doc)
{
var ns = new XmlNamespaceManager(doc.NameTable);
ns.AddNamespace("mb", "https://musicbrainz.org/ns/mmd-2.0#");
var list = new List<RemoteSearchResult>();
var nodes = doc.SelectNodes("//mb:artist-list/mb:artist", ns);
if (nodes != null)
{
foreach (var node in nodes.Cast<XmlNode>())
{
if (node.Attributes != null)
{
string name = null;
string mbzId = node.Attributes["id"].Value;
var nameNode = node.SelectSingleNode("//mb:name", ns);
if (nameNode != null)
{
name = nameNode.InnerText;
}
if (!string.IsNullOrWhiteSpace(mbzId) && !string.IsNullOrWhiteSpace(name))
{
var result = new RemoteSearchResult
{
Name = name
};
result.SetProviderId(MetadataProviders.MusicBrainzArtist, mbzId);
list.Add(result);
}
}
}
}
return list;
}
public async Task<MetadataResult<MusicArtist>> GetMetadata(ArtistInfo id, CancellationToken cancellationToken)
{
var result = new MetadataResult<MusicArtist>
{
Item = new MusicArtist()
};
var musicBrainzId = id.GetMusicBrainzArtistId();
if (string.IsNullOrWhiteSpace(musicBrainzId))
{
var searchResults = await GetSearchResults(id, cancellationToken).ConfigureAwait(false);
var singleResult = searchResults.FirstOrDefault();
if (singleResult != null)
{
musicBrainzId = singleResult.GetProviderId(MetadataProviders.MusicBrainzArtist);
//result.Item.Name = singleResult.Name;
}
}
if (!string.IsNullOrWhiteSpace(musicBrainzId))
{
result.HasMetadata = true;
result.Item.SetProviderId(MetadataProviders.MusicBrainzArtist, musicBrainzId);
}
return result;
}
/// <summary>
/// Determines whether the specified text has diacritics.
/// </summary>
/// <param name="text">The text.</param>
/// <returns><c>true</c> if the specified text has diacritics; otherwise, <c>false</c>.</returns>
private bool HasDiacritics(string text)
{
return !String.Equals(text, RemoveDiacritics(text), StringComparison.Ordinal);
}
/// <summary>
/// Removes the diacritics.
/// </summary>
/// <param name="text">The text.</param>
/// <returns>System.String.</returns>
private string RemoveDiacritics(string text)
{
return String.Concat(
text.Normalize(NormalizationForm.FormD)
.Where(ch => CharUnicodeInfo.GetUnicodeCategory(ch) !=
UnicodeCategory.NonSpacingMark)
).Normalize(NormalizationForm.FormC);
}
/// <summary>
/// Encodes an URL.
/// </summary>
/// <param name="name">The name.</param>
/// <returns>System.String.</returns>
private string UrlEncode(string name)
{
return WebUtility.UrlEncode(name);
}
public string Name
{
get { return "MusicBrainz"; }
}
public Task<HttpResponseInfo> GetImageResponse(string url, CancellationToken cancellationToken)
{
throw new NotImplementedException();
}
}
}