using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Net;
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 System.Xml;
namespace MediaBrowser.Providers.TV
{
///
/// Class TvdbPrescanTask
///
public class TvdbPrescanTask : ILibraryPostScanTask
{
///
/// The server time URL
///
private const string ServerTimeUrl = "http://thetvdb.com/api/Updates.php?type=none";
///
/// The updates URL
///
private const string UpdatesUrl = "http://thetvdb.com/api/Updates.php?type=all&time={0}";
///
/// The _HTTP client
///
private readonly IHttpClient _httpClient;
///
/// The _logger
///
private readonly ILogger _logger;
///
/// The _config
///
private readonly IServerConfigurationManager _config;
private readonly IFileSystem _fileSystem;
private readonly ILibraryManager _libraryManager;
///
/// Initializes a new instance of the class.
///
/// The logger.
/// The HTTP client.
/// The config.
public TvdbPrescanTask(ILogger logger, IHttpClient httpClient, IServerConfigurationManager config, IFileSystem fileSystem, ILibraryManager libraryManager)
{
_logger = logger;
_httpClient = httpClient;
_config = config;
_fileSystem = fileSystem;
_libraryManager = libraryManager;
}
protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
///
/// Runs the specified progress.
///
/// The progress.
/// The cancellation token.
/// Task.
public async Task Run(IProgress progress, CancellationToken cancellationToken)
{
if (!_config.Configuration.EnableInternetProviders)
{
progress.Report(100);
return;
}
var path = TvdbSeriesProvider.GetSeriesDataPath(_config.CommonApplicationPaths);
Directory.CreateDirectory(path);
var timestampFile = Path.Combine(path, "time.txt");
var timestampFileInfo = new FileInfo(timestampFile);
// Don't check for tvdb updates anymore frequently than 24 hours
if (timestampFileInfo.Exists && (DateTime.UtcNow - _fileSystem.GetLastWriteTimeUtc(timestampFileInfo)).TotalDays < 1)
{
return;
}
// Find out the last time we queried tvdb for updates
var lastUpdateTime = timestampFileInfo.Exists ? File.ReadAllText(timestampFile, Encoding.UTF8) : string.Empty;
string newUpdateTime;
var existingDirectories = Directory.EnumerateDirectories(path)
.Select(Path.GetFileName)
.ToList();
var seriesIdsInLibrary = _libraryManager.RootFolder.RecursiveChildren
.OfType()
.Select(i => i.GetProviderId(MetadataProviders.Tvdb))
.Where(i => !string.IsNullOrEmpty(i))
.ToList();
var missingSeries = seriesIdsInLibrary.Except(existingDirectories, StringComparer.OrdinalIgnoreCase)
.ToList();
// If this is our first time, update all series
if (string.IsNullOrEmpty(lastUpdateTime))
{
// First get tvdb server time
using (var stream = await _httpClient.Get(new HttpRequestOptions
{
Url = ServerTimeUrl,
CancellationToken = cancellationToken,
EnableHttpCompression = true,
ResourcePool = TvdbSeriesProvider.Current.TvDbResourcePool
}).ConfigureAwait(false))
{
newUpdateTime = GetUpdateTime(stream);
}
existingDirectories.AddRange(missingSeries);
await UpdateSeries(existingDirectories, path, null, progress, cancellationToken).ConfigureAwait(false);
}
else
{
var seriesToUpdate = await GetSeriesIdsToUpdate(existingDirectories, lastUpdateTime, cancellationToken).ConfigureAwait(false);
newUpdateTime = seriesToUpdate.Item2;
long lastUpdateValue;
long.TryParse(lastUpdateTime, NumberStyles.Any, UsCulture, out lastUpdateValue);
var nullableUpdateValue = lastUpdateValue == 0 ? (long?)null : lastUpdateValue;
var listToUpdate = seriesToUpdate.Item1.ToList();
listToUpdate.AddRange(missingSeries);
await UpdateSeries(listToUpdate, path, nullableUpdateValue, progress, cancellationToken).ConfigureAwait(false);
}
File.WriteAllText(timestampFile, newUpdateTime, Encoding.UTF8);
progress.Report(100);
}
///
/// Gets the update time.
///
/// The response.
/// System.String.
private string GetUpdateTime(Stream response)
{
var settings = new XmlReaderSettings
{
CheckCharacters = false,
IgnoreProcessingInstructions = true,
IgnoreComments = true,
ValidationType = ValidationType.None
};
using (var streamReader = new StreamReader(response, Encoding.UTF8))
{
// Use XmlReader for best performance
using (var reader = XmlReader.Create(streamReader, settings))
{
reader.MoveToContent();
// Loop through each element
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
switch (reader.Name)
{
case "Time":
{
return (reader.ReadElementContentAsString() ?? string.Empty).Trim();
}
default:
reader.Skip();
break;
}
}
}
}
}
return null;
}
///
/// Gets the series ids to update.
///
/// The existing series ids.
/// The last update time.
/// The cancellation token.
/// Task{IEnumerable{System.String}}.
private async Task, string>> GetSeriesIdsToUpdate(IEnumerable existingSeriesIds, string lastUpdateTime, CancellationToken cancellationToken)
{
// First get last time
using (var stream = await _httpClient.Get(new HttpRequestOptions
{
Url = string.Format(UpdatesUrl, lastUpdateTime),
CancellationToken = cancellationToken,
EnableHttpCompression = true,
ResourcePool = TvdbSeriesProvider.Current.TvDbResourcePool
}).ConfigureAwait(false))
{
var data = GetUpdatedSeriesIdList(stream);
var existingDictionary = existingSeriesIds.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase);
var seriesList = data.Item1
.Where(i => !string.IsNullOrWhiteSpace(i) && existingDictionary.ContainsKey(i));
return new Tuple, string>(seriesList, data.Item2);
}
}
private Tuple, string> GetUpdatedSeriesIdList(Stream stream)
{
string updateTime = null;
var idList = new List();
var settings = new XmlReaderSettings
{
CheckCharacters = false,
IgnoreProcessingInstructions = true,
IgnoreComments = true,
ValidationType = ValidationType.None
};
using (var streamReader = new StreamReader(stream, Encoding.UTF8))
{
// Use XmlReader for best performance
using (var reader = XmlReader.Create(streamReader, settings))
{
reader.MoveToContent();
// Loop through each element
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
switch (reader.Name)
{
case "Time":
{
updateTime = (reader.ReadElementContentAsString() ?? string.Empty).Trim();
break;
}
case "Series":
{
var id = (reader.ReadElementContentAsString() ?? string.Empty).Trim();
idList.Add(id);
break;
}
default:
reader.Skip();
break;
}
}
}
}
}
return new Tuple, string>(idList, updateTime);
}
///
/// Updates the series.
///
/// The series ids.
/// The series data path.
/// The last tv db update time.
/// The progress.
/// The cancellation token.
/// Task.
private async Task UpdateSeries(IEnumerable seriesIds, string seriesDataPath, long? lastTvDbUpdateTime, IProgress progress, CancellationToken cancellationToken)
{
var list = seriesIds.ToList();
var numComplete = 0;
// Gather all series into a lookup by tvdb id
var allSeries = _libraryManager.RootFolder.RecursiveChildren
.OfType()
.Where(i => !string.IsNullOrEmpty(i.GetProviderId(MetadataProviders.Tvdb)))
.ToLookup(i => i.GetProviderId(MetadataProviders.Tvdb));
foreach (var seriesId in list)
{
// Find the preferred language(s) for the movie in the library
var languages = allSeries[seriesId]
.Select(i => i.GetPreferredMetadataLanguage())
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
foreach (var language in languages)
{
try
{
await UpdateSeries(seriesId, seriesDataPath, lastTvDbUpdateTime, language, cancellationToken).ConfigureAwait(false);
}
catch (HttpException ex)
{
_logger.ErrorException("Error updating tvdb series id {0}, language {1}", ex, seriesId, language);
// Already logged at lower levels, but don't fail the whole operation, unless timed out
// We have to fail this to make it run again otherwise new episode data could potentially be missing
if (ex.IsTimedOut)
{
throw;
}
}
}
numComplete++;
double percent = numComplete;
percent /= list.Count;
percent *= 100;
progress.Report(percent);
}
}
///
/// Updates the series.
///
/// The id.
/// The series data path.
/// The last tv db update time.
/// The preferred metadata language.
/// The cancellation token.
/// Task.
private Task UpdateSeries(string id, string seriesDataPath, long? lastTvDbUpdateTime, string preferredMetadataLanguage, CancellationToken cancellationToken)
{
_logger.Info("Updating series from tvdb " + id + ", language " + preferredMetadataLanguage);
seriesDataPath = Path.Combine(seriesDataPath, id);
Directory.CreateDirectory(seriesDataPath);
return TvdbSeriesProvider.Current.DownloadSeriesZip(id, seriesDataPath, lastTvDbUpdateTime, preferredMetadataLanguage, cancellationToken);
}
}
}