#nullable disable

using MediaBrowser.Controller.Entities;

namespace MediaBrowser.Controller.Sorting
{
    /// <summary>
    /// Helpers shared by the comparers that sort on user data.
    /// </summary>
    public static class UserBaseItemComparerExtensions
    {
        /// <summary>
        /// Gets the user data for an item, preferring the batch the sort prefetched.
        /// </summary>
        /// <param name="comparer">The comparer.</param>
        /// <param name="item">The item.</param>
        /// <returns>The item's user data.</returns>
        public static UserItemData GetUserData(this IUserBaseItemComparer comparer, BaseItem item)
        {
            if (comparer.PrefetchedUserData is not null && comparer.PrefetchedUserData.TryGetValue(item.Id, out var userData))
            {
                return userData;
            }

            return comparer.UserDataManager.GetUserData(comparer.User, item);
        }
    }
}