753 lines
28 KiB
C#
753 lines
28 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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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.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.Providers;
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using MediaBrowser.Model.Serialization;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.Logging;
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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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private Stopwatch _stopWatchMusicBrainz = new Stopwatch();
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public readonly string MusicBrainzBaseUrl;
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// The Jellyfin user-agent is unrestricted but source IP must not exceed
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// one request per second, therefore we rate limit to avoid throttling.
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// Be prudent, use a value slightly above the minimun required.
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// https://musicbrainz.org/doc/XML_Web_Service/Rate_Limiting
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private const long MusicBrainzQueryIntervalMs = 1050u;
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public MusicBrainzAlbumProvider(
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IHttpClient httpClient,
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IApplicationHost appHost,
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ILogger logger,
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IJsonSerializer json,
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IConfiguration configuration)
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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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MusicBrainzBaseUrl = configuration["MusicBrainz:BaseUrl"];
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// Use a stopwatch to ensure we don't exceed the MusicBrainz rate limit
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_stopWatchMusicBrainz.Start();
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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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var releaseGroupId = searchInfo.GetReleaseGroupId();
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string url;
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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 if (!string.IsNullOrEmpty(releaseGroupId))
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{
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url = string.Format("/ws/2/release?release-group={0}", releaseGroupId);
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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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// I'm sure there is a better way but for now it resolves search for 12" Mixes
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var queryName = searchInfo.Name.Replace("\"", string.Empty);
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url = string.Format("/ws/2/release/?query=\"{0}\" AND artist:\"{1}\"",
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WebUtility.UrlEncode(queryName),
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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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using (var response = await GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false))
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{
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using (var stream = response.Content)
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{
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return GetResultsFromResponse(stream);
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}
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}
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}
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return Enumerable.Empty<RemoteSearchResult>();
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}
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private IEnumerable<RemoteSearchResult> GetResultsFromResponse(Stream stream)
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{
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using (var oReader = new StreamReader(stream, Encoding.UTF8))
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{
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var settings = new XmlReaderSettings()
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{
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ValidationType = ValidationType.None,
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CheckCharacters = false,
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IgnoreProcessingInstructions = true,
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IgnoreComments = true
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};
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using (var reader = XmlReader.Create(oReader, settings))
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{
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var results = ReleaseResult.Parse(reader);
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return results.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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ProductionYear = i.Year
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};
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if (i.Artists.Count > 0)
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{
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result.AlbumArtist = new RemoteSearchResult
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{
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SearchProviderName = Name,
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Name = i.Artists[0].Item1
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};
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result.AlbumArtist.SetProviderId(MetadataProviders.MusicBrainzArtist, i.Artists[0].Item2);
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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.MusicBrainzReleaseGroup, i.ReleaseGroupId);
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}
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return result;
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});
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}
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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 we have a release group Id but not a release Id...
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if (string.IsNullOrWhiteSpace(releaseId) && !string.IsNullOrWhiteSpace(releaseGroupId))
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{
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releaseId = await GetReleaseIdFromReleaseGroupId(releaseGroupId, cancellationToken).ConfigureAwait(false);
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result.HasMetadata = true;
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}
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if (string.IsNullOrWhiteSpace(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 (releaseResult != null)
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{
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if (!string.IsNullOrWhiteSpace(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.IsNullOrWhiteSpace(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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result.Item.ProductionYear = releaseResult.Year;
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result.Item.Overview = releaseResult.Overview;
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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.IsNullOrWhiteSpace(releaseId) && string.IsNullOrWhiteSpace(releaseGroupId))
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{
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releaseGroupId = await GetReleaseGroupFromReleaseId(releaseId, cancellationToken).ConfigureAwait(false);
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result.HasMetadata = true;
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}
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if (!string.IsNullOrWhiteSpace(releaseId) || !string.IsNullOrWhiteSpace(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 => "MusicBrainz";
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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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using (var response = await GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false))
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using (var stream = response.Content)
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using (var oReader = new StreamReader(stream, Encoding.UTF8))
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{
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var settings = new XmlReaderSettings()
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{
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ValidationType = ValidationType.None,
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CheckCharacters = false,
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IgnoreProcessingInstructions = true,
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IgnoreComments = true
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};
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using (var reader = XmlReader.Create(oReader, settings))
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{
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return ReleaseResult.Parse(reader).FirstOrDefault();
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}
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}
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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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using (var response = await GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false))
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using (var stream = response.Content)
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using (var oReader = new StreamReader(stream, Encoding.UTF8))
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{
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var settings = new XmlReaderSettings()
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{
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ValidationType = ValidationType.None,
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CheckCharacters = false,
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IgnoreProcessingInstructions = true,
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IgnoreComments = true
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};
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using (var reader = XmlReader.Create(oReader, settings))
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{
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return ReleaseResult.Parse(reader).FirstOrDefault();
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}
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}
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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 string Overview;
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public int? Year;
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public List<ValueTuple<string, string>> Artists = new List<ValueTuple<string, string>>();
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public static IEnumerable<ReleaseResult> Parse(XmlReader reader)
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{
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reader.MoveToContent();
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reader.Read();
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "release-list":
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{
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if (reader.IsEmptyElement)
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{
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reader.Read();
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continue;
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}
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using (var subReader = reader.ReadSubtree())
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{
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return ParseReleaseList(subReader);
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}
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return Enumerable.Empty<ReleaseResult>();
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}
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private static IEnumerable<ReleaseResult> ParseReleaseList(XmlReader reader)
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{
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reader.MoveToContent();
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reader.Read();
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "release":
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{
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if (reader.IsEmptyElement)
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{
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reader.Read();
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continue;
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}
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var releaseId = reader.GetAttribute("id");
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using (var subReader = reader.ReadSubtree())
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{
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var release = ParseRelease(subReader, releaseId);
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if (release != null)
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{
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yield return release;
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}
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}
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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}
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private static ReleaseResult ParseRelease(XmlReader reader, string releaseId)
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{
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var result = new ReleaseResult
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{
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ReleaseId = releaseId
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};
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reader.MoveToContent();
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reader.Read();
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// http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "title":
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{
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result.Title = reader.ReadElementContentAsString();
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break;
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}
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case "date":
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{
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var val = reader.ReadElementContentAsString();
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if (DateTime.TryParse(val, out var date))
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{
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result.Year = date.Year;
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}
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break;
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}
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case "annotation":
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{
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result.Overview = reader.ReadElementContentAsString();
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break;
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}
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case "release-group":
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{
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result.ReleaseGroupId = reader.GetAttribute("id");
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reader.Skip();
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break;
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}
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case "artist-credit":
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{
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// TODO
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/*
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* <artist-credit>
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<name-credit>
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<artist id="e225cda5-882d-4b80-b8a3-b36d7175b1ea">
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<name>SARCASTIC+ZOOKEEPER</name>
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<sort-name>SARCASTIC+ZOOKEEPER</sort-name>
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</artist>
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</name-credit>
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</artist-credit>
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*/
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using (var subReader = reader.ReadSubtree())
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{
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var artist = ParseArtistCredit(subReader);
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if (!string.IsNullOrEmpty(artist.Item1))
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{
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result.Artists.Add(artist);
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}
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}
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return result;
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}
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}
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private static ValueTuple<string, string> ParseArtistCredit(XmlReader reader)
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{
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reader.MoveToContent();
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reader.Read();
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// http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "name-credit":
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{
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using (var subReader = reader.ReadSubtree())
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{
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return ParseArtistNameCredit(subReader);
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}
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return new ValueTuple<string, string>();
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}
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private static (string, string) ParseArtistNameCredit(XmlReader reader)
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{
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reader.MoveToContent();
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reader.Read();
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// http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "artist":
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{
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var id = reader.GetAttribute("id");
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using (var subReader = reader.ReadSubtree())
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{
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return ParseArtistArtistCredit(subReader, id);
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}
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return (null, null);
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}
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private static (string name, string id) ParseArtistArtistCredit(XmlReader reader, string artistId)
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{
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reader.MoveToContent();
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reader.Read();
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string name = null;
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// http://stackoverflow.com/questions/2299632/why-does-xmlreader-skip-every-other-element-if-there-is-no-whitespace-separator
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// Loop through each element
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while (!reader.EOF && reader.ReadState == ReadState.Interactive)
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{
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if (reader.NodeType == XmlNodeType.Element)
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{
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switch (reader.Name)
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{
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case "name":
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{
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name = reader.ReadElementContentAsString();
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break;
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}
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default:
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{
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reader.Skip();
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break;
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}
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}
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}
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else
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{
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reader.Read();
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}
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}
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return (name, artistId);
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}
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private async Task<string> GetReleaseIdFromReleaseGroupId(string releaseGroupId, CancellationToken cancellationToken)
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{
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var url = string.Format("/ws/2/release?release-group={0}", releaseGroupId);
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|
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using (var response = await GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false))
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using (var stream = response.Content)
|
|
using (var oReader = new StreamReader(stream, Encoding.UTF8))
|
|
{
|
|
var settings = new XmlReaderSettings()
|
|
{
|
|
ValidationType = ValidationType.None,
|
|
CheckCharacters = false,
|
|
IgnoreProcessingInstructions = true,
|
|
IgnoreComments = true
|
|
};
|
|
|
|
using (var reader = XmlReader.Create(oReader, settings))
|
|
{
|
|
var result = ReleaseResult.Parse(reader).FirstOrDefault();
|
|
|
|
if (result != null)
|
|
{
|
|
return result.ReleaseId;
|
|
}
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the release group id internal.
|
|
/// </summary>
|
|
/// <param name="releaseEntryId">The release entry id.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>Task{System.String}.</returns>
|
|
private async Task<string> GetReleaseGroupFromReleaseId(string releaseEntryId, CancellationToken cancellationToken)
|
|
{
|
|
var url = string.Format("/ws/2/release-group/?query=reid:{0}", releaseEntryId);
|
|
|
|
using (var response = await GetMusicBrainzResponse(url, cancellationToken).ConfigureAwait(false))
|
|
using (var stream = response.Content)
|
|
using (var oReader = new StreamReader(stream, Encoding.UTF8))
|
|
{
|
|
var settings = new XmlReaderSettings()
|
|
{
|
|
ValidationType = ValidationType.None,
|
|
CheckCharacters = false,
|
|
IgnoreProcessingInstructions = true,
|
|
IgnoreComments = true
|
|
};
|
|
|
|
using (var reader = XmlReader.Create(oReader, settings))
|
|
{
|
|
reader.MoveToContent();
|
|
reader.Read();
|
|
|
|
// Loop through each element
|
|
while (!reader.EOF && reader.ReadState == ReadState.Interactive)
|
|
{
|
|
if (reader.NodeType == XmlNodeType.Element)
|
|
{
|
|
switch (reader.Name)
|
|
{
|
|
case "release-group-list":
|
|
{
|
|
if (reader.IsEmptyElement)
|
|
{
|
|
reader.Read();
|
|
continue;
|
|
}
|
|
using (var subReader = reader.ReadSubtree())
|
|
{
|
|
return GetFirstReleaseGroupId(subReader);
|
|
}
|
|
}
|
|
default:
|
|
{
|
|
reader.Skip();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
reader.Read();
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
}
|
|
}
|
|
|
|
private string GetFirstReleaseGroupId(XmlReader reader)
|
|
{
|
|
reader.MoveToContent();
|
|
reader.Read();
|
|
|
|
// Loop through each element
|
|
while (!reader.EOF && reader.ReadState == ReadState.Interactive)
|
|
{
|
|
if (reader.NodeType == XmlNodeType.Element)
|
|
{
|
|
switch (reader.Name)
|
|
{
|
|
case "release-group":
|
|
{
|
|
return reader.GetAttribute("id");
|
|
}
|
|
default:
|
|
{
|
|
reader.Skip();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
reader.Read();
|
|
}
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Makes request to MusicBrainz server and awaits a response.
|
|
/// </summary>
|
|
internal async Task<HttpResponseInfo> GetMusicBrainzResponse(string url, CancellationToken cancellationToken)
|
|
{
|
|
if (_stopWatchMusicBrainz.ElapsedMilliseconds < MusicBrainzQueryIntervalMs)
|
|
{
|
|
// MusicBrainz is extremely adamant about limiting to one request per second
|
|
var delayMs = MusicBrainzQueryIntervalMs - _stopWatchMusicBrainz.ElapsedMilliseconds;
|
|
await Task.Delay((int)delayMs, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
_logger.LogDebug("MusicBrainz time since previous request: {0}ms", _stopWatchMusicBrainz.ElapsedMilliseconds);
|
|
_stopWatchMusicBrainz.Restart();
|
|
|
|
var options = new HttpRequestOptions
|
|
{
|
|
Url = MusicBrainzBaseUrl.TrimEnd('/') + url,
|
|
CancellationToken = cancellationToken,
|
|
UserAgent = _appHost.ApplicationUserAgent,
|
|
BufferContent = false
|
|
};
|
|
|
|
return await _httpClient.SendAsync(options, "GET").ConfigureAwait(false);
|
|
}
|
|
|
|
public int Order => 0;
|
|
|
|
public Task<HttpResponseInfo> GetImageResponse(string url, CancellationToken cancellationToken)
|
|
{
|
|
throw new NotImplementedException();
|
|
}
|
|
}
|
|
}
|