jellyfin/MediaBrowser.Providers/TV/SeriesMetadataService.cs
2024-06-20 22:03:01 +02:00

269 lines
11 KiB
C#

#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Globalization;
using MediaBrowser.Model.IO;
using MediaBrowser.Providers.Manager;
using Microsoft.Extensions.Logging;
namespace MediaBrowser.Providers.TV
{
public class SeriesMetadataService : MetadataService<Series, SeriesInfo>
{
private readonly ILocalizationManager _localizationManager;
public SeriesMetadataService(
IServerConfigurationManager serverConfigurationManager,
ILogger<SeriesMetadataService> logger,
IProviderManager providerManager,
IFileSystem fileSystem,
ILibraryManager libraryManager,
ILocalizationManager localizationManager)
: base(serverConfigurationManager, logger, providerManager, fileSystem, libraryManager)
{
_localizationManager = localizationManager;
}
public override async Task<ItemUpdateType> RefreshMetadata(BaseItem item, MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
{
if (item is Series series)
{
var seasons = series.GetRecursiveChildren(i => i is Season).ToList();
foreach (var season in seasons)
{
var hasUpdate = refreshOptions != null && season.BeforeMetadataRefresh(refreshOptions.ReplaceAllMetadata);
if (hasUpdate)
{
await season.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, cancellationToken).ConfigureAwait(false);
}
}
}
return await base.RefreshMetadata(item, refreshOptions, cancellationToken).ConfigureAwait(false);
}
/// <inheritdoc />
protected override async Task AfterMetadataRefresh(Series item, MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
{
await base.AfterMetadataRefresh(item, refreshOptions, cancellationToken).ConfigureAwait(false);
RemoveObsoleteEpisodes(item);
await CreateSeasonsAsync(item, cancellationToken).ConfigureAwait(false);
RemoveObsoleteSeasons(item);
}
/// <inheritdoc />
protected override void MergeData(MetadataResult<Series> source, MetadataResult<Series> target, MetadataField[] lockedFields, bool replaceData, bool mergeMetadataSettings)
{
base.MergeData(source, target, lockedFields, replaceData, mergeMetadataSettings);
var sourceItem = source.Item;
var targetItem = target.Item;
if (replaceData || string.IsNullOrEmpty(targetItem.AirTime))
{
targetItem.AirTime = sourceItem.AirTime;
}
if (replaceData || !targetItem.Status.HasValue)
{
targetItem.Status = sourceItem.Status;
}
if (replaceData || targetItem.AirDays is null || targetItem.AirDays.Length == 0)
{
targetItem.AirDays = sourceItem.AirDays;
}
}
private void RemoveObsoleteSeasons(Series series)
{
// TODO Legacy. It's not really "physical" seasons as any virtual seasons are always converted to non-virtual in CreateSeasonsAsync.
var physicalSeasonNumbers = new HashSet<int>();
var virtualSeasons = new List<Season>();
foreach (var existingSeason in series.Children.OfType<Season>())
{
if (existingSeason.LocationType != LocationType.Virtual && existingSeason.IndexNumber.HasValue)
{
physicalSeasonNumbers.Add(existingSeason.IndexNumber.Value);
}
else if (existingSeason.LocationType == LocationType.Virtual)
{
virtualSeasons.Add(existingSeason);
}
}
foreach (var virtualSeason in virtualSeasons)
{
var seasonNumber = virtualSeason.IndexNumber;
// If there's a physical season with the same number or no episodes in the season, delete it
if ((seasonNumber.HasValue && physicalSeasonNumbers.Contains(seasonNumber.Value))
|| virtualSeason.GetEpisodes().Count == 0)
{
Logger.LogInformation("Removing virtual season {SeasonNumber} in series {SeriesName}", virtualSeason.IndexNumber, series.Name);
LibraryManager.DeleteItem(
virtualSeason,
new DeleteOptions
{
// Internal metadata paths are removed regardless of this.
DeleteFileLocation = false
},
false);
}
}
}
private void RemoveObsoleteEpisodes(Series series)
{
var episodes = series.GetEpisodes(null, new DtoOptions(), true).OfType<Episode>().ToList();
var numberOfEpisodes = episodes.Count;
// TODO: O(n^2), but can it be done faster without overcomplicating it?
for (var i = 0; i < numberOfEpisodes; i++)
{
var currentEpisode = episodes[i];
// The outer loop only examines virtual episodes
if (!currentEpisode.IsVirtualItem)
{
continue;
}
// Virtual episodes without an episode number are practically orphaned and should be deleted
if (!currentEpisode.IndexNumber.HasValue)
{
DeleteEpisode(currentEpisode);
continue;
}
for (var j = i + 1; j < numberOfEpisodes; j++)
{
var comparisonEpisode = episodes[j];
// The inner loop is only for "physical" episodes
if (comparisonEpisode.IsVirtualItem
|| currentEpisode.ParentIndexNumber != comparisonEpisode.ParentIndexNumber
|| !comparisonEpisode.ContainsEpisodeNumber(currentEpisode.IndexNumber.Value))
{
continue;
}
DeleteEpisode(currentEpisode);
break;
}
}
}
private void DeleteEpisode(Episode episode)
{
Logger.LogInformation(
"Removing virtual episode S{SeasonNumber}E{EpisodeNumber} in series {SeriesName}",
episode.ParentIndexNumber,
episode.IndexNumber,
episode.SeriesName);
LibraryManager.DeleteItem(
episode,
new DeleteOptions
{
// Internal metadata paths are removed regardless of this.
DeleteFileLocation = false
},
false);
}
/// <summary>
/// Creates seasons for all episodes if they don't exist.
/// If no season number can be determined, a dummy season will be created.
/// </summary>
/// <param name="series">The series.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The async task.</returns>
private async Task CreateSeasonsAsync(Series series, CancellationToken cancellationToken)
{
var seriesChildren = series.GetRecursiveChildren(i => i is Episode || i is Season);
var seasons = seriesChildren.OfType<Season>().ToList();
var uniqueSeasonNumbers = seriesChildren
.OfType<Episode>()
.Select(e => e.ParentIndexNumber >= 0 ? e.ParentIndexNumber : null)
.Distinct();
// Loop through the unique season numbers
foreach (var seasonNumber in uniqueSeasonNumbers)
{
// Null season numbers will have a 'dummy' season created because seasons are always required.
var existingSeason = seasons.FirstOrDefault(i => i.IndexNumber == seasonNumber);
if (existingSeason is null)
{
var seasonName = GetValidSeasonNameForSeries(series, null, seasonNumber);
await CreateSeasonAsync(series, seasonName, seasonNumber, cancellationToken).ConfigureAwait(false);
}
else if (existingSeason.IsVirtualItem)
{
existingSeason.IsVirtualItem = false;
await existingSeason.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, cancellationToken).ConfigureAwait(false);
}
}
}
/// <summary>
/// Creates a new season, adds it to the database by linking it to the [series] and refreshes the metadata.
/// </summary>
/// <param name="series">The series.</param>
/// <param name="seasonName">The season name.</param>
/// <param name="seasonNumber">The season number.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>The newly created season.</returns>
private async Task CreateSeasonAsync(
Series series,
string? seasonName,
int? seasonNumber,
CancellationToken cancellationToken)
{
Logger.LogInformation("Creating Season {SeasonName} entry for {SeriesName}", seasonName, series.Name);
var season = new Season
{
Name = seasonName,
IndexNumber = seasonNumber,
Id = LibraryManager.GetNewItemId(
series.Id + (seasonNumber ?? -1).ToString(CultureInfo.InvariantCulture) + seasonName,
typeof(Season)),
IsVirtualItem = false,
SeriesId = series.Id,
SeriesName = series.Name,
SeriesPresentationUniqueKey = series.GetPresentationUniqueKey()
};
series.AddChild(season);
await season.RefreshMetadata(new MetadataRefreshOptions(new DirectoryService(FileSystem)), cancellationToken).ConfigureAwait(false);
}
private string GetValidSeasonNameForSeries(Series series, string? seasonName, int? seasonNumber)
{
if (string.IsNullOrEmpty(seasonName))
{
seasonName = seasonNumber switch
{
null => _localizationManager.GetLocalizedString("NameSeasonUnknown"),
0 => LibraryManager.GetLibraryOptions(series).SeasonZeroDisplayName,
_ => string.Format(CultureInfo.InvariantCulture, _localizationManager.GetLocalizedString("NameSeasonNumber"), seasonNumber.Value)
};
}
return seasonName;
}
}
}