jellyfin/MediaBrowser.Providers/Folders/FolderMetadataService.cs

using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Providers.Manager;
using System.Collections.Generic;

namespace MediaBrowser.Providers.Folders
{
    public class FolderMetadataService : MetadataService<Folder, ItemLookupInfo>
    {
        public FolderMetadataService(IServerConfigurationManager serverConfigurationManager, ILogger logger, IProviderManager providerManager, IProviderRepository providerRepo, IFileSystem fileSystem, IUserDataManager userDataManager, ILibraryManager libraryManager) : base(serverConfigurationManager, logger, providerManager, providerRepo, fileSystem, userDataManager, libraryManager)
        {
        }

        public override int Order
        {
            get
            {
                // Make sure the type-specific services get picked first
                return 10;
            }
        }

        protected override void MergeData(MetadataResult<Folder> source, MetadataResult<Folder> target, List<MetadataFields> lockedFields, bool replaceData, bool mergeMetadataSettings)
        {
            ProviderUtils.MergeBaseItemData(source, target, lockedFields, replaceData, mergeMetadataSettings);
        }
    }
}