jellyfin/Emby.Server.Implementations/Sorting/ParentIndexNumberComparer.cs

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C#
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using System;
using Jellyfin.Data.Enums;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Sorting;
using MediaBrowser.Model.Querying;
namespace Emby.Server.Implementations.Sorting
{
/// <summary>
/// Class ParentIndexNumberComparer.
/// </summary>
public class ParentIndexNumberComparer : IBaseItemComparer
{
/// <summary>
/// Gets the name.
/// </summary>
/// <value>The name.</value>
public ItemSortBy Type => ItemSortBy.ParentIndexNumber;
/// <summary>
/// Compares the specified x.
/// </summary>
/// <param name="x">The x.</param>
/// <param name="y">The y.</param>
/// <returns>System.Int32.</returns>
public int Compare(BaseItem? x, BaseItem? y)
{
ArgumentNullException.ThrowIfNull(x);
ArgumentNullException.ThrowIfNull(y);
if (!x.ParentIndexNumber.HasValue && !y.ParentIndexNumber.HasValue)
{
return 0;
}
if (!x.ParentIndexNumber.HasValue)
{
return -1;
}
if (!y.ParentIndexNumber.HasValue)
{
return 1;
}
return x.ParentIndexNumber.Value.CompareTo(y.ParentIndexNumber.Value);
}
}
}