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path: root/MediaBrowser.Api/VideosService.cs
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using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Querying;
using ServiceStack;
using System;
using System.Linq;

namespace MediaBrowser.Api
{
    [Route("/Videos/{Id}/AdditionalParts", "GET")]
    [Api(Description = "Gets additional parts for a video.")]
    public class GetAdditionalParts : IReturn<ItemsResult>
    {
        [ApiMember(Name = "UserId", Description = "Optional. Filter by user id, and attach user data", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
        public Guid? UserId { get; set; }

        /// <summary>
        /// Gets or sets the id.
        /// </summary>
        /// <value>The id.</value>
        [ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "GET")]
        public string Id { get; set; }
    }
    
    public class VideosService : BaseApiService
    {
        private readonly ILibraryManager _libraryManager;
        private readonly IUserManager _userManager;
        private readonly IDtoService _dtoService;

        public VideosService( ILibraryManager libraryManager, IUserManager userManager, IDtoService dtoService)
        {
            _libraryManager = libraryManager;
            _userManager = userManager;
            _dtoService = dtoService;
        }

        /// <summary>
        /// Gets the specified request.
        /// </summary>
        /// <param name="request">The request.</param>
        /// <returns>System.Object.</returns>
        public object Get(GetAdditionalParts request)
        {
            var user = request.UserId.HasValue ? _userManager.GetUserById(request.UserId.Value) : null;

            var item = string.IsNullOrEmpty(request.Id)
                           ? (request.UserId.HasValue
                                  ? user.RootFolder
                                  : (Folder)_libraryManager.RootFolder)
                           : _dtoService.GetItemByDtoId(request.Id, request.UserId);

            // Get everything
            var fields = Enum.GetNames(typeof(ItemFields))
                    .Select(i => (ItemFields)Enum.Parse(typeof(ItemFields), i, true))
                    .ToList();

            var video = (Video)item;

            var items = video.AdditionalPartIds.Select(_libraryManager.GetItemById)
                         .OrderBy(i => i.SortName)
                         .Select(i => _dtoService.GetBaseItemDto(i, fields, user, video))
                         .ToArray();

            var result = new ItemsResult
            {
                Items = items,
                TotalRecordCount = items.Length
            };

            return ToOptimizedResult(result);
        }
    }
}