public void RegisterBooking(BookingDto NewBookingDto)
        {
            //Console.ForegroundColor = ConsoleColor.DarkYellow;
            //Console.WriteLine("LibraryService - Reservando libro para su préstamo \n");
            //Console.ForegroundColor = ConsoleColor.White;
            
            BookingEntity bookingEntity = new BookingEntity();

            bookingEntity.BookId = NewBookingDto.BookId;
            bookingEntity.EndBookingDate = NewBookingDto.EndBookingDate;
            bookingEntity.LibraryAppUsername = NewBookingDto.LibraryAppUsername;
            bookingEntity.StartBookingDate = NewBookingDto.StartBookingDate;
            _dblibrary.RegisterBooking(bookingEntity);
        }
        /// <summary>
        /// 
        /// </summary>
        private void BookBookimgOp()
        {
            LibraryAppUserDto libUserDto = new LibraryAppUserDto();
            BookDto bookDto = new BookDto();
            DateTime endBooking;
            string inputLine = string.Empty;
            Console.TreatControlCAsInput = false;  


            do
            {
                Console.WriteLine("Introduzca el usuario: ");
                inputLine = Console.ReadLine();
                libUserDto = _userService.GetUser(inputLine);
                if (libUserDto == null)
                {
                    Console.ForegroundColor = ConsoleColor.Red;
                    Console.WriteLine("Nombre de usuario no válido");
                    Console.ForegroundColor = ConsoleColor.White;
                }

            } while (libUserDto == null);

            if (_libService.IsUserAllowed(libUserDto.Username))
            {
                do
                {
                    Console.WriteLine("Introduzca el libro: ");
                    inputLine = Console.ReadLine();
                    bookDto = _libService.GetBook(inputLine);
                    if (bookDto == null)
                    {
                        Console.ForegroundColor = ConsoleColor.Red;
                        Console.WriteLine("Nombre de libro no válido");
                        Console.ForegroundColor = ConsoleColor.White;
                    }
                    else 
                    {
                        if(_libService.IsBooked(bookDto.BookTitle))
                        {
                            Console.ForegroundColor = ConsoleColor.Red;
                            Console.WriteLine("Libro no disponible");
                            Console.ForegroundColor = ConsoleColor.White;
                            bookDto = null;
                        }
                    }
                    
                } while (bookDto == null);

                Console.WriteLine("Iniciando proceso de préstamo \n");
                BookingDto newBooking = new BookingDto();

                bool validDAte = false;
                do
                {
                    Console.WriteLine("Introduzca la fecha de la devolución: ");
                    Console.WriteLine("{dd/mm/aaaa} ej: 20/08/2016");
                    inputLine = Console.ReadLine();
                    validDAte = (Common.ValidateDate(inputLine, out endBooking) && (endBooking < DateTime.Today.AddDays(30)));

                    if (!validDAte)
                    {
                        Console.ForegroundColor = ConsoleColor.Red;
                        Console.WriteLine("Fecha de devolucióno no válida");
                        Console.ForegroundColor = ConsoleColor.White;
                    }

                } while (!validDAte);

                newBooking.BookId = bookDto.Id;
                newBooking.LibraryAppUsername = libUserDto.Username;
                newBooking.StartBookingDate = DateTime.Today;
                newBooking.EndBookingDate = endBooking;
                _libService.RegisterBooking(newBooking);

                Console.ForegroundColor = ConsoleColor.Green;
                Console.WriteLine("Préstamo registrado correctamente \n");
                Console.ForegroundColor = ConsoleColor.White;
            }
            else
            {
                Console.ForegroundColor = ConsoleColor.Red;
                Console.WriteLine("Se ha denagado el préstamo\n");
                Console.ForegroundColor = ConsoleColor.White;
            }
            Console.WriteLine("---------------------");
          
        }
        public BookingDto GetBooking(string Username, string bookTitle) 
        {
            //Console.ForegroundColor = ConsoleColor.DarkYellow;
            //Console.WriteLine("LibraryService - Obteniendo reserva del usuario {0} del libro {1}... \n", Username, bookTitle);
            //Console.ForegroundColor = ConsoleColor.White;
            BookingEntity bookingEntity = _dblibrary.GetBooking(Username, bookTitle);
            BookingDto bookingDto = new BookingDto();

            bookingDto.Id = bookingEntity.Id;
            bookingDto.BookId = bookingEntity.BookId;
            bookingDto.EndBookingDate = bookingEntity.EndBookingDate;
            bookingDto.StartBookingDate = bookingEntity.StartBookingDate;
            bookingDto.LibraryAppUsername = bookingEntity.LibraryAppUsername;
            bookingDto.UserReturnDate = bookingEntity.UserReturnDate;            

            return bookingDto;
        }