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