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using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Providers.TV;
namespace MediaBrowser.Providers.Music
{
class FanartUpdatesPostScanTask : ILibraryPostScanTask
{
private const string UpdatesUrl = "http://api.fanart.tv/webservice/newmusic/{0}/{1}/";
/// <summary>
/// The _HTTP client
/// </summary>
private readonly IHttpClient _httpClient;
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// The _config
/// </summary>
private readonly IServerConfigurationManager _config;
private readonly IJsonSerializer _jsonSerializer;
private readonly IFileSystem _fileSystem;
private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
public FanartUpdatesPostScanTask(IJsonSerializer jsonSerializer, IServerConfigurationManager config, ILogger logger, IHttpClient httpClient, IFileSystem fileSystem)
{
_jsonSerializer = jsonSerializer;
_config = config;
_logger = logger;
_httpClient = httpClient;
_fileSystem = fileSystem;
}
/// <summary>
/// Runs the specified progress.
/// </summary>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
{
var options = FanartSeriesProvider.Current.GetFanartOptions();
if (!options.EnableAutomaticUpdates)
{
progress.Report(100);
return;
}
var path = FanartArtistProvider.GetArtistDataPath(_config.CommonApplicationPaths);
Directory.CreateDirectory(path);
var timestampFile = Path.Combine(path, "time.txt");
var timestampFileInfo = new FileInfo(timestampFile);
// Don't check for updates every single time
if (timestampFileInfo.Exists && (DateTime.UtcNow - _fileSystem.GetLastWriteTimeUtc(timestampFileInfo)).TotalDays < 3)
{
return;
}
// Find out the last time we queried for updates
var lastUpdateTime = timestampFileInfo.Exists ? File.ReadAllText(timestampFile, Encoding.UTF8) : string.Empty;
var existingDirectories = Directory.EnumerateDirectories(path).Select(Path.GetFileName).ToList();
// If this is our first time, don't do any updates and just record the timestamp
if (!string.IsNullOrEmpty(lastUpdateTime))
{
var artistsToUpdate = await GetArtistIdsToUpdate(existingDirectories, lastUpdateTime, options, cancellationToken).ConfigureAwait(false);
progress.Report(5);
await UpdateArtists(artistsToUpdate, progress, cancellationToken).ConfigureAwait(false);
}
var newUpdateTime = Convert.ToInt64(DateTimeToUnixTimestamp(DateTime.UtcNow)).ToString(UsCulture);
File.WriteAllText(timestampFile, newUpdateTime, Encoding.UTF8);
progress.Report(100);
}
/// <summary>
/// Gets the artist ids to update.
/// </summary>
/// <param name="existingArtistIds">The existing series ids.</param>
/// <param name="lastUpdateTime">The last update time.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{IEnumerable{System.String}}.</returns>
private async Task<IEnumerable<string>> GetArtistIdsToUpdate(IEnumerable<string> existingArtistIds, string lastUpdateTime, FanartOptions options, CancellationToken cancellationToken)
{
var url = string.Format(UpdatesUrl, FanartArtistProvider.ApiKey, lastUpdateTime);
if (!string.IsNullOrWhiteSpace(options.UserApiKey))
{
url += "&client_key=" + options.UserApiKey;
}
// First get last time
using (var stream = await _httpClient.Get(new HttpRequestOptions
{
Url = url,
CancellationToken = cancellationToken,
EnableHttpCompression = true,
ResourcePool = FanartArtistProvider.Current.FanArtResourcePool
}).ConfigureAwait(false))
{
// If empty fanart will return a string of "null", rather than an empty list
using (var reader = new StreamReader(stream))
{
var json = await reader.ReadToEndAsync().ConfigureAwait(false);
if (string.Equals(json, "null", StringComparison.OrdinalIgnoreCase))
{
return new List<string>();
}
var existingDictionary = existingArtistIds.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase);
var updates = _jsonSerializer.DeserializeFromString<List<FanArtUpdate>>(json);
return updates.Select(i => i.id).Where(existingDictionary.ContainsKey);
}
}
}
/// <summary>
/// Updates the artists.
/// </summary>
/// <param name="idList">The id list.</param>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task UpdateArtists(IEnumerable<string> idList, IProgress<double> progress, CancellationToken cancellationToken)
{
var list = idList.ToList();
var numComplete = 0;
foreach (var id in list)
{
await UpdateArtist(id, cancellationToken).ConfigureAwait(false);
numComplete++;
double percent = numComplete;
percent /= list.Count;
percent *= 95;
progress.Report(percent + 5);
}
}
/// <summary>
/// Updates the artist.
/// </summary>
/// <param name="musicBrainzId">The musicBrainzId.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private Task UpdateArtist(string musicBrainzId, CancellationToken cancellationToken)
{
_logger.Info("Updating artist " + musicBrainzId);
return FanartArtistProvider.Current.DownloadArtistXml(musicBrainzId, cancellationToken);
}
/// <summary>
/// Dates the time to unix timestamp.
/// </summary>
/// <param name="dateTime">The date time.</param>
/// <returns>System.Double.</returns>
private static double DateTimeToUnixTimestamp(DateTime dateTime)
{
return (dateTime - new DateTime(1970, 1, 1).ToUniversalTime()).TotalSeconds;
}
public class FanArtUpdate
{
public string id { get; set; }
public string name { get; set; }
public string new_images { get; set; }
public string total_images { get; set; }
}
}
}
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