using MediaBrowser.Common.Extensions;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
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 SeriesPostScanTask : ILibraryPostScanTask
{
///
/// The _library manager
///
private readonly ILibraryManager _libraryManager;
private readonly IServerConfigurationManager _config;
private readonly ILogger _logger;
public SeriesPostScanTask(ILibraryManager libraryManager, ILogger logger, IServerConfigurationManager config)
{
_libraryManager = libraryManager;
_logger = logger;
_config = config;
}
public Task Run(IProgress progress, CancellationToken cancellationToken)
{
return RunInternal(progress, cancellationToken);
}
private async Task RunInternal(IProgress progress, CancellationToken cancellationToken)
{
var seriesList = _libraryManager.RootFolder
.RecursiveChildren
.OfType()
.ToList();
var seriesGroups = from series in seriesList
let tvdbId = series.GetProviderId(MetadataProviders.Tvdb)
where !string.IsNullOrEmpty(tvdbId)
group series by tvdbId into g
select g;
await new MissingEpisodeProvider(_logger, _config).Run(seriesGroups, cancellationToken).ConfigureAwait(false);
var numComplete = 0;
foreach (var series in seriesList)
{
cancellationToken.ThrowIfCancellationRequested();
var episodes = series.RecursiveChildren
.OfType()
.ToList();
var physicalEpisodes = episodes.Where(i => i.LocationType != LocationType.Virtual)
.ToList();
series.SeasonCount = episodes
.Select(i => i.ParentIndexNumber ?? 0)
.Where(i => i != 0)
.Distinct()
.Count();
series.SpecialFeatureIds = physicalEpisodes
.Where(i => i.ParentIndexNumber.HasValue && i.ParentIndexNumber.Value == 0)
.Select(i => i.Id)
.ToList();
series.DateLastEpisodeAdded = physicalEpisodes.Select(i => i.DateCreated)
.OrderByDescending(i => i)
.FirstOrDefault();
numComplete++;
double percent = numComplete;
percent /= seriesList.Count;
percent *= 100;
progress.Report(percent);
}
}
}
class MissingEpisodeProvider
{
private readonly IServerConfigurationManager _config;
private readonly ILogger _logger;
private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
public MissingEpisodeProvider(ILogger logger, IServerConfigurationManager config)
{
_logger = logger;
_config = config;
}
public async Task Run(IEnumerable> series, CancellationToken cancellationToken)
{
foreach (var seriesGroup in series)
{
await Run(seriesGroup, cancellationToken).ConfigureAwait(false);
}
}
private async Task Run(IGrouping group, CancellationToken cancellationToken)
{
var tvdbId = group.Key;
var seriesDataPath = TvdbSeriesProvider.GetSeriesDataPath(_config.ApplicationPaths, tvdbId);
var episodeFiles = Directory.EnumerateFiles(seriesDataPath, "*.xml", SearchOption.TopDirectoryOnly)
.Select(Path.GetFileNameWithoutExtension)
.Where(i => i.StartsWith("episode-", StringComparison.OrdinalIgnoreCase))
.ToList();
var episodeLookup = episodeFiles
.Select(i =>
{
var parts = i.Split('-');
if (parts.Length == 3)
{
int seasonNumber;
if (int.TryParse(parts[1], NumberStyles.Integer, UsCulture, out seasonNumber))
{
int episodeNumber;
if (int.TryParse(parts[2], NumberStyles.Integer, UsCulture, out episodeNumber))
{
return new Tuple(seasonNumber, episodeNumber);
}
}
}
return new Tuple(-1, -1);
})
.Where(i => i.Item1 != -1 && i.Item2 != -1)
.ToList();
var anySeasonsRemoved = await RemoveObsoleteOrMissingSeasons(group, episodeLookup, cancellationToken)
.ConfigureAwait(false);
var anyEpisodesRemoved = await RemoveObsoleteOrMissingEpisodes(group, episodeLookup, cancellationToken)
.ConfigureAwait(false);
var hasNewEpisodes = false;
var hasNewSeasons = false;
foreach (var series in group.Where(s => s.ContainsEpisodesWithoutSeasonFolders))
{
hasNewSeasons = await AddDummySeasonFolders(series, cancellationToken).ConfigureAwait(false);
}
if (_config.Configuration.EnableInternetProviders)
{
hasNewEpisodes = await AddMissingEpisodes(group.ToList(), seriesDataPath, episodeLookup, cancellationToken)
.ConfigureAwait(false);
}
if (hasNewSeasons || hasNewEpisodes || anySeasonsRemoved || anyEpisodesRemoved)
{
foreach (var series in group)
{
await series.RefreshMetadata(new MetadataRefreshOptions
{
}, cancellationToken)
.ConfigureAwait(false);
await series.ValidateChildren(new Progress(), cancellationToken, true)
.ConfigureAwait(false);
}
}
}
///
/// For series with episodes directly under the series folder, this adds dummy seasons to enable regular browsing and metadata
///
///
///
///
private async Task AddDummySeasonFolders(Series series, CancellationToken cancellationToken)
{
var existingEpisodes = series.RecursiveChildren
.OfType()
.ToList();
var hasChanges = false;
// Loop through the unique season numbers
foreach (var seasonNumber in existingEpisodes.Select(i => i.ParentIndexNumber ?? -1)
.Where(i => i >= 0)
.Distinct()
.ToList())
{
var hasSeason = series.Children.OfType()
.Any(i => i.IndexNumber.HasValue && i.IndexNumber.Value == seasonNumber);
if (!hasSeason)
{
await AddSeason(series, seasonNumber, cancellationToken).ConfigureAwait(false);
hasChanges = true;
}
}
return hasChanges;
}
///
/// Adds the missing episodes.
///
/// The series.
/// The series data path.
/// The episode lookup.
/// The cancellation token.
/// Task.
private async Task AddMissingEpisodes(List series, string seriesDataPath, IEnumerable> episodeLookup, CancellationToken cancellationToken)
{
var existingEpisodes = series.SelectMany(s => s.RecursiveChildren.OfType()).ToList();
var hasChanges = false;
foreach (var tuple in episodeLookup)
{
if (tuple.Item1 <= 0)
{
// Ignore season zeros
continue;
}
if (tuple.Item2 <= 0)
{
// Ignore episode zeros
continue;
}
var existingEpisode = GetExistingEpisode(existingEpisodes, tuple);
if (existingEpisode != null)
{
continue;
}
var airDate = GetAirDate(seriesDataPath, tuple.Item1, tuple.Item2);
if (!airDate.HasValue)
{
continue;
}
var now = DateTime.UtcNow;
var targetSeries = DetermineAppropriateSeries(series, tuple.Item1);
if (airDate.Value < now)
{
// tvdb has a lot of nearly blank episodes
_logger.Info("Creating virtual missing episode {0} {1}x{2}", targetSeries.Name, tuple.Item1, tuple.Item2);
await AddEpisode(targetSeries, tuple.Item1, tuple.Item2, cancellationToken).ConfigureAwait(false);
hasChanges = true;
}
else if (airDate.Value > now)
{
// tvdb has a lot of nearly blank episodes
_logger.Info("Creating virtual unaired episode {0} {1}x{2}", targetSeries.Name, tuple.Item1, tuple.Item2);
await AddEpisode(targetSeries, tuple.Item1, tuple.Item2, cancellationToken).ConfigureAwait(false);
hasChanges = true;
}
}
return hasChanges;
}
private Series DetermineAppropriateSeries(List series, int seasonNumber)
{
return series.FirstOrDefault(s => s.RecursiveChildren.OfType().Any(season => season.IndexNumber == seasonNumber)) ??
series.FirstOrDefault(s => s.RecursiveChildren.OfType().Any(season => season.IndexNumber == 1)) ??
series.OrderBy(s => s.RecursiveChildren.OfType().Select(season => season.IndexNumber).Min()).First();
}
///
/// Removes the virtual entry after a corresponding physical version has been added
///
private async Task RemoveObsoleteOrMissingEpisodes(IEnumerable series, IEnumerable> episodeLookup, CancellationToken cancellationToken)
{
var existingEpisodes = series.SelectMany(s => s.RecursiveChildren.OfType()).ToList();
var physicalEpisodes = existingEpisodes
.Where(i => i.LocationType != LocationType.Virtual)
.ToList();
var virtualEpisodes = existingEpisodes
.Where(i => i.LocationType == LocationType.Virtual)
.ToList();
var episodesToRemove = virtualEpisodes
.Where(i =>
{
if (i.IndexNumber.HasValue && i.ParentIndexNumber.HasValue)
{
var seasonNumber = i.ParentIndexNumber.Value;
var episodeNumber = i.IndexNumber.Value;
// If there's a physical episode with the same season and episode number, delete it
if (physicalEpisodes.Any(p =>
p.ParentIndexNumber.HasValue && p.ParentIndexNumber.Value == seasonNumber &&
p.ContainsEpisodeNumber(episodeNumber)))
{
return true;
}
// If the episode no longer exists in the remote lookup, delete it
if (!episodeLookup.Any(e => e.Item1 == seasonNumber && e.Item2 == episodeNumber))
{
return true;
}
return false;
}
return true;
})
.ToList();
var hasChanges = false;
foreach (var episodeToRemove in episodesToRemove)
{
_logger.Info("Removing missing/unaired episode {0} {1}x{2}", episodeToRemove.Series.Name, episodeToRemove.ParentIndexNumber, episodeToRemove.IndexNumber);
await episodeToRemove.Parent.RemoveChild(episodeToRemove, cancellationToken).ConfigureAwait(false);
hasChanges = true;
}
return hasChanges;
}
///
/// Removes the obsolete or missing seasons.
///
/// The series.
/// The episode lookup.
/// The cancellation token.
/// Task{System.Boolean}.
private async Task RemoveObsoleteOrMissingSeasons(IEnumerable series, IEnumerable> episodeLookup, CancellationToken cancellationToken)
{
var existingSeasons = series.SelectMany(s => s.Children.OfType()).ToList();
var physicalSeasons = existingSeasons
.Where(i => i.LocationType != LocationType.Virtual)
.ToList();
var virtualSeasons = existingSeasons
.Where(i => i.LocationType == LocationType.Virtual)
.ToList();
var seasonsToRemove = virtualSeasons
.Where(i =>
{
if (i.IndexNumber.HasValue)
{
var seasonNumber = i.IndexNumber.Value;
// If there's a physical season with the same number, delete it
if (physicalSeasons.Any(p => p.IndexNumber.HasValue && p.IndexNumber.Value == seasonNumber))
{
return true;
}
// If the season no longer exists in the remote lookup, delete it
if (episodeLookup.All(e => e.Item1 != seasonNumber))
{
return true;
}
return false;
}
return true;
})
.ToList();
var hasChanges = false;
foreach (var seasonToRemove in seasonsToRemove)
{
_logger.Info("Removing virtual season {0} {1}", seasonToRemove.Series.Name, seasonToRemove.IndexNumber);
await seasonToRemove.Parent.RemoveChild(seasonToRemove, cancellationToken).ConfigureAwait(false);
hasChanges = true;
}
return hasChanges;
}
///
/// Adds the episode.
///
/// The series.
/// The season number.
/// The episode number.
/// The cancellation token.
/// Task.
private async Task AddEpisode(Series series, int seasonNumber, int episodeNumber, CancellationToken cancellationToken)
{
var season = series.Children.OfType()
.FirstOrDefault(i => i.IndexNumber.HasValue && i.IndexNumber.Value == seasonNumber);
if (season == null)
{
season = await AddSeason(series, seasonNumber, cancellationToken).ConfigureAwait(false);
}
var name = string.Format("Episode {0}", episodeNumber.ToString(UsCulture));
var episode = new Episode
{
Name = name,
IndexNumber = episodeNumber,
ParentIndexNumber = seasonNumber,
Parent = season,
DisplayMediaType = typeof(Episode).Name,
Id = (series.Id + seasonNumber.ToString(UsCulture) + name).GetMBId(typeof(Episode))
};
await season.AddChild(episode, cancellationToken).ConfigureAwait(false);
await episode.RefreshMetadata(new MetadataRefreshOptions
{
}, cancellationToken).ConfigureAwait(false);
}
///
/// Adds the season.
///
/// The series.
/// The season number.
/// The cancellation token.
/// Task{Season}.
private async Task AddSeason(Series series, int seasonNumber, CancellationToken cancellationToken)
{
_logger.Info("Creating Season {0} entry for {1}", seasonNumber, series.Name);
var name = seasonNumber == 0 ? _config.Configuration.SeasonZeroDisplayName : string.Format("Season {0}", seasonNumber.ToString(UsCulture));
var season = new Season
{
Name = name,
IndexNumber = seasonNumber,
Parent = series,
DisplayMediaType = typeof(Season).Name,
Id = (series.Id + seasonNumber.ToString(UsCulture) + name).GetMBId(typeof(Season))
};
await series.AddChild(season, cancellationToken).ConfigureAwait(false);
await season.RefreshMetadata(new MetadataRefreshOptions
{
}, cancellationToken).ConfigureAwait(false);
return season;
}
///
/// Gets the existing episode.
///
/// The existing episodes.
/// The tuple.
/// Episode.
private Episode GetExistingEpisode(IEnumerable existingEpisodes, Tuple tuple)
{
return existingEpisodes
.FirstOrDefault(i => (i.ParentIndexNumber ?? -1) == tuple.Item1 && i.ContainsEpisodeNumber(tuple.Item2));
}
///
/// Gets the air date.
///
/// The series data path.
/// The season number.
/// The episode number.
/// System.Nullable{DateTime}.
private DateTime? GetAirDate(string seriesDataPath, int seasonNumber, int episodeNumber)
{
// First open up the tvdb xml file and make sure it has valid data
var filename = string.Format("episode-{0}-{1}.xml", seasonNumber.ToString(UsCulture), episodeNumber.ToString(UsCulture));
var xmlPath = Path.Combine(seriesDataPath, filename);
DateTime? airDate = null;
// It appears the best way to filter out invalid entries is to only include those with valid air dates
using (var streamReader = new StreamReader(xmlPath, Encoding.UTF8))
{
// Use XmlReader for best performance
using (var reader = XmlReader.Create(streamReader, new XmlReaderSettings
{
CheckCharacters = false,
IgnoreProcessingInstructions = true,
IgnoreComments = true,
ValidationType = ValidationType.None
}))
{
reader.MoveToContent();
// Loop through each element
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
switch (reader.Name)
{
case "EpisodeName":
{
var val = reader.ReadElementContentAsString();
if (string.IsNullOrWhiteSpace(val))
{
// Not valid, ignore these
return null;
}
break;
}
case "FirstAired":
{
var val = reader.ReadElementContentAsString();
if (!string.IsNullOrWhiteSpace(val))
{
DateTime date;
if (DateTime.TryParse(val, out date))
{
airDate = date.ToUniversalTime();
}
}
break;
}
default:
reader.Skip();
break;
}
}
}
}
}
return airDate;
}
}
}