Exemple #1
0
        /// <summary>
        /// dispatch the dvd
        /// </summary>
        /// <param name="dvdRequest"></param>
        /// <param name="dvds"></param>
        /// <returns></returns>
        private static bool dispatch(Rental dvdRequest, DVD dvd)
        {
            try
            {
                // add dvd to rental
                var therental = db.Rentals.First(r => r.RentalID == dvdRequest.RentalID);
                var theDVD = db.DVDs.First(d => d.DvdID == dvd.DvdID);
                therental.DateSent = DateTime.Now;
                therental.DateDue = DateTime.Now.AddDays(14);
                therental.QueuePosition = null;
                therental.Dvd = dvd;
                therental.DvdID = dvd.DvdID;
                db.SaveChanges();

                theDVD.Rentals.Add(therental);
                theDVD.State = "rented";

                // dispatch
                db.SaveChanges();
            }
            catch (Exception)
            {
                return false;
            }

            return true;
        }
Exemple #2
0
        /// <summary>
        /// checks if dvd is available, then dispatches it and sends user a message
        /// </summary>
        /// <param name="dvdRequest">the rental wanting a dvd</param>
        /// <returns>true if dispatched, false if not</returns>
        public static bool RequestDVD(Rental dvdRequest)
        {
            var dvds = db.DVDs.Where(d => d.MovieID == dvdRequest.MovieID && d.State.Equals("available"));

            if (dvds.Any())
            {
                return dispatch(dvdRequest, dvds.First()) && msgSend(dvdRequest.User, dvdRequest.Movie);
            }

            // no DVDs available
            return false;
        }
Exemple #3
0
 /// <summary>
 /// handles a returned dvd and realocates it
 /// </summary>
 /// <param name="dvdReturn"></param>
 /// <returns></returns>
 public static bool ReturnDVD(Rental dvdReturn)
 {
     try
     {
         // "return" dvd
         var toReturn = db.Rentals.First(r => r.RentalID == dvdReturn.RentalID);
         toReturn.DateReturned = DateTime.Now;
         toReturn.Dvd.State = "available";
         db.SaveChanges();
     }
     catch (Exception)
     {
         return false;
     }
     // hand over to newt user
     return realocateDVD(dvdReturn.Dvd);
 }
        /// <summary>
        /// the code which created a new queue item
        /// </summary>
        /// <param name="id"></param>
        private void rentMovie(int id)
        {
            try
            {
                var movie = db.Movies.First(m => m.MovieID == id);
                var user = db.Users.First(u => u.Username == User.Identity.Name);
                var position = 0;

                if (user.Queue.Any())
                {
                    if (user.Queue.Any(r => r.QueuePosition != null))
                    {
                        position = user.Queue.Count(r => r.QueuePosition != null) + 1;
                    }
                }

                var newQueueItem = new Rental
                {
                    DateDue = null,
                    DateOfRental = DateTime.Now,
                    DateReturned = null,
                    DateSent = null,
                    Movie = movie,
                    MovieID = movie.MovieID,
                    User = user,
                    UserID = user.UserID,
                    QueuePosition = position
                };
                db.Rentals.Add(newQueueItem);
                db.SaveChanges();

                user.Queue.Add(newQueueItem);
                movie.Rentals.Add(newQueueItem);
                db.SaveChanges();

                // try getting a dvd
                Dispatch.RequestDVD(newQueueItem);
            }
            catch (Exception)
            {

                throw new AddToQueueFailedException();
            }
        }