jellyfin-server/MediaBrowser.Server.Implementations/Library/Validators/MusicGenresValidator.cs

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C#
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using System.Collections.Generic;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Logging;
using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Library.Validators
{
class MusicGenresValidator
{
/// <summary>
/// The _library manager
/// </summary>
private readonly ILibraryManager _libraryManager;
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
public MusicGenresValidator(ILibraryManager libraryManager, ILogger logger)
{
_libraryManager = libraryManager;
_logger = logger;
}
/// <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)
{
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var items = _libraryManager.RootFolder.GetRecursiveChildren(i => (i is IHasMusicGenres))
.SelectMany(i => i.Genres)
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.DistinctNames()
.ToList();
var numComplete = 0;
var count = items.Count;
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var validIds = new List<Guid>();
foreach (var name in items)
{
try
{
var itemByName = _libraryManager.GetMusicGenre(name);
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validIds.Add(itemByName.Id);
await itemByName.RefreshMetadata(cancellationToken).ConfigureAwait(false);
}
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catch (OperationCanceledException)
{
// Don't clutter the log
break;
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}
catch (Exception ex)
{
_logger.ErrorException("Error refreshing {0}", ex, name);
}
numComplete++;
double percent = numComplete;
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percent /= count;
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percent *= 100;
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progress.Report(percent);
}
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var allIds = _libraryManager.GetItemIds(new InternalItemsQuery
{
IncludeItemTypes = new[] { typeof(MusicGenre).Name }
});
var invalidIds = allIds
.Except(validIds)
.ToList();
foreach (var id in invalidIds)
{
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cancellationToken.ThrowIfCancellationRequested();
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var item = _libraryManager.GetItemById(id);
await _libraryManager.DeleteItem(item, new DeleteOptions
{
DeleteFileLocation = false
}).ConfigureAwait(false);
}
progress.Report(100);
}
}
}