jellyfin/MediaBrowser.Controller/Providers/Music/LastfmAlbumProvider.cs

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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
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using MoreLinq;
using System;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
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namespace MediaBrowser.Controller.Providers.Music
{
public class LastfmAlbumProvider : LastfmBaseProvider
{
private static readonly Task<string> BlankId = Task.FromResult("");
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private readonly IProviderManager _providerManager;
public LastfmAlbumProvider(IJsonSerializer jsonSerializer, IHttpClient httpClient, ILogManager logManager, IServerConfigurationManager configurationManager, IProviderManager providerManager)
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: base(jsonSerializer, httpClient, logManager, configurationManager)
{
_providerManager = providerManager;
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LocalMetaFileName = LastfmHelper.LocalAlbumMetaFileName;
}
protected override Task<string> FindId(BaseItem item, CancellationToken cancellationToken)
{
// We don't fetch by id
return BlankId;
}
protected override async Task FetchLastfmData(BaseItem item, string id, CancellationToken cancellationToken)
{
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var result = await GetAlbumResult(item, cancellationToken).ConfigureAwait(false);
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if (result != null && result.album != null)
{
LastfmHelper.ProcessAlbumData(item, result.album);
//And save locally if indicated
if (ConfigurationManager.Configuration.SaveLocalMeta)
{
var ms = new MemoryStream();
JsonSerializer.SerializeToStream(result.album, ms);
cancellationToken.ThrowIfCancellationRequested();
await _providerManager.SaveToLibraryFilesystem(item, Path.Combine(item.MetaLocation, LocalMetaFileName), ms, cancellationToken).ConfigureAwait(false);
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}
}
}
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private async Task<LastfmGetAlbumResult> GetAlbumResult(BaseItem item, CancellationToken cancellationToken)
{
var result = await GetAlbumResult(item.Parent.Name, item.Name, cancellationToken);
if (result != null && result.album != null)
{
return result;
}
var folder = (Folder)item;
// Get each song, distinct by the combination of AlbumArtist and Album
var songs = folder.Children.OfType<Audio>().DistinctBy(i => (i.AlbumArtist ?? string.Empty) + (i.Album ?? string.Empty), StringComparer.OrdinalIgnoreCase).ToList();
foreach (var song in songs.Where(song => !string.IsNullOrEmpty(song.Album) && !string.IsNullOrEmpty(song.AlbumArtist)))
{
result = await GetAlbumResult(song.AlbumArtist, song.Album, cancellationToken).ConfigureAwait(false);
if (result != null && result.album != null)
{
return result;
}
}
return null;
}
private async Task<LastfmGetAlbumResult> GetAlbumResult(string artist, string album, CancellationToken cancellationToken)
{
// Get albu info using artist and album name
var url = RootUrl + string.Format("method=album.getInfo&artist={0}&album={1}&api_key={2}&format=json", UrlEncode(artist), UrlEncode(album), ApiKey);
using (var json = await HttpClient.Get(url, LastfmResourcePool, cancellationToken).ConfigureAwait(false))
{
return JsonSerializer.DeserializeFromStream<LastfmGetAlbumResult>(json);
}
}
protected override Task FetchData(BaseItem item, CancellationToken cancellationToken)
{
return FetchLastfmData(item, string.Empty, cancellationToken);
}
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public override bool Supports(BaseItem item)
{
return item is MusicAlbum;
}
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protected override bool RefreshOnFileSystemStampChange
{
get
{
return true;
}
}
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}
}