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using System;
using System.Globalization;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Enums;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.Library.Validators;
/// <summary>
/// Class GenresValidator.
/// </summary>
public class GenresValidator
{
/// <summary>
/// The library manager.
/// </summary>
private readonly ILibraryManager _libraryManager;
private readonly IItemRepository _itemRepo;
/// <summary>
/// The logger.
/// </summary>
private readonly ILogger<GenresValidator> _logger;
/// <summary>
/// Initializes a new instance of the <see cref="GenresValidator"/> class.
/// </summary>
/// <param name="libraryManager">The library manager.</param>
/// <param name="logger">The logger.</param>
/// <param name="itemRepo">The item repository.</param>
public GenresValidator(ILibraryManager libraryManager, ILogger<GenresValidator> logger, IItemRepository itemRepo)
{
_libraryManager = libraryManager;
_logger = logger;
_itemRepo = itemRepo;
}
/// <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 names = _itemRepo.GetGenreNames();
var existingGenreIds = _libraryManager.GetItemIds(new InternalItemsQuery
{
IncludeItemTypes = [BaseItemKind.Genre]
}).ToHashSet();
var existingGenres = _libraryManager.GetItemList(new InternalItemsQuery
{
IncludeItemTypes = [BaseItemKind.Genre]
}).Cast<Genre>()
.GroupBy(g => g.Name, StringComparer.OrdinalIgnoreCase)
.ToDictionary(g => g.Key, g => g.First(), StringComparer.OrdinalIgnoreCase);
var numComplete = 0;
var count = names.Count;
var refreshed = 0;
foreach (var name in names)
{
try
{
Genre? item = null;
if (existingGenres.TryGetValue(name, out var existingGenre))
{
item = existingGenre;
}
// Fall back to GetGenre if not found (creates new item if needed)
item ??= _libraryManager.GetGenre(name);
if (!existingGenreIds.Contains(item.Id))
{
await item.RefreshMetadata(cancellationToken).ConfigureAwait(false);
refreshed++;
}
}
catch (OperationCanceledException)
{
// Don't clutter the log
throw;
}
catch (Exception ex)
{
_logger.LogError(ex, "Error refreshing {GenreName}", name);
}
numComplete++;
double percent = numComplete;
percent /= count;
percent *= 100;
progress.Report(percent);
}
_logger.LogInformation("Refreshed metadata for {RefreshedCount} new genres out of {TotalCount} total", refreshed, count);
var deadEntities = _libraryManager.GetItemList(new InternalItemsQuery
{
IncludeItemTypes = [BaseItemKind.Genre, BaseItemKind.MusicGenre],
IsDeadGenre = true,
IsLocked = false
});
foreach (var item in deadEntities)
{
_logger.LogInformation("Deleting dead {ItemType} {ItemId} {ItemName}", item.GetType().Name, item.Id.ToString("N", CultureInfo.InvariantCulture), item.Name);
_libraryManager.DeleteItem(
item,
new DeleteOptions
{
DeleteFileLocation = false
},
false);
}
progress.Report(100);
}
}
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