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using System;
using System.Collections.Generic;
using Jellyfin.Data.Enums;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Dto;
namespace Jellyfin.Server.Implementations.Item;
/// <summary>
/// Turns per-type counts into an <see cref="ItemCounts"/>.
/// </summary>
internal static class ItemCountBuilder
{
/// <summary>
/// Builds the counts of one by-name item.
/// </summary>
/// <param name="itemTypeLookup">The item type lookup.</param>
/// <param name="counts">The counted items, by type name. A type may repeat.</param>
/// <returns>The counts.</returns>
public static ItemCounts Build(IItemTypeLookup itemTypeLookup, IEnumerable<(string Type, int Count)> counts)
{
ArgumentNullException.ThrowIfNull(itemTypeLookup);
ArgumentNullException.ThrowIfNull(counts);
var lookup = itemTypeLookup.BaseItemKindNames;
var result = new ItemCounts();
foreach (var (type, count) in counts)
{
// Accumulated rather than assigned: a caller may group by something finer than the
// type and hand the same type over more than once.
if (string.Equals(type, lookup[BaseItemKind.MusicAlbum], StringComparison.Ordinal))
{
result.AlbumCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.MusicArtist], StringComparison.Ordinal))
{
result.ArtistCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Episode], StringComparison.Ordinal))
{
result.EpisodeCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Movie], StringComparison.Ordinal))
{
result.MovieCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.MusicVideo], StringComparison.Ordinal))
{
result.MusicVideoCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.LiveTvProgram], StringComparison.Ordinal))
{
result.ProgramCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Series], StringComparison.Ordinal))
{
result.SeriesCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Audio], StringComparison.Ordinal))
{
result.SongCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Trailer], StringComparison.Ordinal))
{
result.TrailerCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.BoxSet], StringComparison.Ordinal))
{
result.BoxSetCount += count;
}
else if (string.Equals(type, lookup[BaseItemKind.Book], StringComparison.Ordinal))
{
result.BookCount += count;
}
}
result.ItemCount = result.TotalItemCount();
return result;
}
/// <summary>
/// Replaces the episode count, which both by-name paths decide separately from the other
/// types because a genre or studio is usually written on the series rather than its episodes.
/// </summary>
/// <param name="counts">The counts to update.</param>
/// <param name="episodeCount">The episode count.</param>
public static void SetEpisodeCount(ItemCounts counts, int episodeCount)
{
ArgumentNullException.ThrowIfNull(counts);
counts.EpisodeCount = episodeCount;
counts.ItemCount = counts.TotalItemCount();
}
}
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