using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using ServiceStack;

namespace MediaBrowser.Api.Movies
{
    /// <summary>
    /// Class GetSimilarTrailers
    /// </summary>
    [Route("/Trailers/{Id}/Similar", "GET")]
    [Api(Description = "Finds movies and trailers similar to a given trailer.")]
    public class GetSimilarTrailers : BaseGetSimilarItemsFromItem
    {
    }

    /// <summary>
    /// Class TrailersService
    /// </summary>
    public class TrailersService : BaseApiService
    {
        /// <summary>
        /// The _user manager
        /// </summary>
        private readonly IUserManager _userManager;

        /// <summary>
        /// The _user data repository
        /// </summary>
        private readonly IUserDataManager _userDataRepository;
        /// <summary>
        /// The _library manager
        /// </summary>
        private readonly ILibraryManager _libraryManager;

        private readonly IItemRepository _itemRepo;
        private readonly IDtoService _dtoService;

        /// <summary>
        /// Initializes a new instance of the <see cref="TrailersService"/> class.
        /// </summary>
        /// <param name="userManager">The user manager.</param>
        /// <param name="userDataRepository">The user data repository.</param>
        /// <param name="libraryManager">The library manager.</param>
        public TrailersService(IUserManager userManager, IUserDataManager userDataRepository, ILibraryManager libraryManager, IItemRepository itemRepo, IDtoService dtoService)
        {
            _userManager = userManager;
            _userDataRepository = userDataRepository;
            _libraryManager = libraryManager;
            _itemRepo = itemRepo;
            _dtoService = dtoService;
        }

        /// <summary>
        /// Gets the specified request.
        /// </summary>
        /// <param name="request">The request.</param>
        /// <returns>System.Object.</returns>
        public object Get(GetSimilarTrailers request)
        {
            var result = SimilarItemsHelper.GetSimilarItemsResult(_userManager,
                _itemRepo,
                _libraryManager,
                _userDataRepository,
                _dtoService,
                Logger,

                // Strip out secondary versions
                request, item => (item is Movie || item is Trailer) && !((Video)item).PrimaryVersionId.HasValue,

                SimilarItemsHelper.GetSimiliarityScore);

            return ToOptimizedSerializedResultUsingCache(result);
        }
    }
}