using MediaBrowser.Common.Net; using MediaBrowser.Controller.Configuration; using MediaBrowser.Controller.Entities; using MediaBrowser.Controller.Entities.Audio; using MediaBrowser.Controller.Providers; using MediaBrowser.Model.Entities; using MediaBrowser.Model.Logging; using MediaBrowser.Model.Serialization; using System; using System.Globalization; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading; using System.Threading.Tasks; namespace MediaBrowser.Providers.Music { public class LastfmArtistProvider : IRemoteMetadataProvider, IHasOrder { private readonly IJsonSerializer _json; private readonly IHttpClient _httpClient; internal static readonly SemaphoreSlim LastfmResourcePool = new SemaphoreSlim(4, 4); internal const string RootUrl = @"http://ws.audioscrobbler.com/2.0/?"; internal static string ApiKey = "7b76553c3eb1d341d642755aecc40a33"; private readonly IServerConfigurationManager _config; private readonly ILogger _logger; public LastfmArtistProvider(IHttpClient httpClient, IJsonSerializer json, IServerConfigurationManager config, ILogger logger) { _httpClient = httpClient; _json = json; _config = config; _logger = logger; } public async Task> GetMetadata(ItemId id, CancellationToken cancellationToken) { var result = new MetadataResult(); var musicBrainzId = id.GetProviderId(MetadataProviders.Musicbrainz); if (!String.IsNullOrWhiteSpace(musicBrainzId)) { cancellationToken.ThrowIfCancellationRequested(); result.Item = new MusicArtist(); result.HasMetadata = true; result.Item.SetProviderId(MetadataProviders.Musicbrainz, musicBrainzId); await FetchLastfmData(result.Item, musicBrainzId, cancellationToken).ConfigureAwait(false); } return result; } protected virtual async Task FetchLastfmData(MusicArtist item, string musicBrainzId, CancellationToken cancellationToken) { // Get artist info with provided id var url = RootUrl + String.Format("method=artist.getInfo&mbid={0}&api_key={1}&format=json", UrlEncode(musicBrainzId), ApiKey); LastfmGetArtistResult result; using (var json = await _httpClient.Get(new HttpRequestOptions { Url = url, ResourcePool = LastfmResourcePool, CancellationToken = cancellationToken, EnableHttpCompression = false }).ConfigureAwait(false)) { using (var reader = new StreamReader(json)) { var jsonText = await reader.ReadToEndAsync().ConfigureAwait(false); // Fix their bad json jsonText = jsonText.Replace("\"#text\"", "\"url\""); result = _json.DeserializeFromString(jsonText); } } if (result != null && result.artist != null) { ProcessArtistData(item, result.artist, musicBrainzId); } } private void ProcessArtistData(MusicArtist artist, LastfmArtist data, string musicBrainzId) { var yearFormed = 0; if (data.bio != null) { Int32.TryParse(data.bio.yearformed, out yearFormed); if (!artist.LockedFields.Contains(MetadataFields.Overview)) { artist.Overview = data.bio.content; } if (!string.IsNullOrEmpty(data.bio.placeformed) && !artist.LockedFields.Contains(MetadataFields.ProductionLocations)) { artist.AddProductionLocation(data.bio.placeformed); } } if (yearFormed > 0) { artist.PremiereDate = new DateTime(yearFormed, 1, 1, 0, 0, 0, DateTimeKind.Utc); artist.ProductionYear = yearFormed; } string imageSize; var url = LastfmHelper.GetImageUrl(data, out imageSize); LastfmHelper.SaveImageInfo(_config.ApplicationPaths, _logger, musicBrainzId, url, imageSize); } /// /// Determines whether the specified text has diacritics. /// /// The text. /// true if the specified text has diacritics; otherwise, false. private bool HasDiacritics(string text) { return !String.Equals(text, RemoveDiacritics(text), StringComparison.Ordinal); } /// /// Removes the diacritics. /// /// The text. /// System.String. private string RemoveDiacritics(string text) { return String.Concat( text.Normalize(NormalizationForm.FormD) .Where(ch => CharUnicodeInfo.GetUnicodeCategory(ch) != UnicodeCategory.NonSpacingMark) ).Normalize(NormalizationForm.FormC); } /// /// Encodes an URL. /// /// The name. /// System.String. private string UrlEncode(string name) { return WebUtility.UrlEncode(name); } public string Name { get { return "last.fm"; } } public int Order { get { return 1; } } } }