private void ChceckInstore(Book book)
        {
            int added = book.InStore;
            if (added > 0 && db.Reservations.Where(r => r.BookID == book.BookID).ToList().Count() > 0)
            {
                List<Reservation> reservations = db.Reservations.Where(r => r.BookID == book.BookID).ToList();
                reservations = reservations.OrderBy(o => o.QueueNumber).ToList();
                reservations = reservations.Take(added).ToList();

                //int nr = 1;
                foreach (Reservation r in reservations)
                {
                    Borrow borrow = new Borrow();
                    borrow.BookID = r.book.BookID;
                    borrow.book = book;
                    borrow.BorrowDate = DateTime.Now;
                    borrow.ReturnDate = DateTime.Now;
                    borrow.Fine = 0;
                    borrow.User = r.User;
                    borrow.Status = "Waiting";
                    db.Borrows.Add(borrow);
                    db.Reservations.Remove(r);
                    book.InStore--;
                    //db.Books.Attach(dbBook);
                    //dbBook.InStore = b.InStore - 1;
                    db.Entry(book).State = EntityState.Modified;
                    db.SaveChanges();
                }

                reservations = db.Reservations.Where(r => r.BookID == book.BookID).ToList();
                reservations = reservations.OrderBy(o => o.QueueNumber).ToList();
                int nr = 1;
                foreach (Reservation r in reservations)
                {
                    r.QueueNumber = nr;
                    db.Entry(r).State = EntityState.Modified;
                    db.SaveChanges();
                    nr++;
                }
            }
        }
        public ActionResult DoBorrow()
        {
            if (Session["Cart" + User.Identity.Name] != null)
            {
                var db = new ApplicationDbContext();
                List<Book> cart = (List<Book>)Session["Cart" + User.Identity.Name];
                Session["Cart" + User.Identity.Name] = new List<Book>();
                foreach (Book b in cart)
                {
                    //Book dbBook = new Book { BookID = b.BookID };
                    Borrow borrow = new Borrow();
                    borrow.BookID = b.BookID;
                    //borrow.book = b; dodawalo autorow
                    borrow.BorrowDate = DateTime.Now;
                    borrow.ReturnDate = DateTime.Now;
                    borrow.Fine = 0;
                    borrow.User = db.Users.FirstOrDefault(u => u.UserName == User.Identity.Name);
                    borrow.Status = "Waiting";
                    db.Borrows.Add(borrow);
                    b.InStore--;
                    //db.Books.Attach(dbBook);
                    //dbBook.InStore = b.InStore - 1;
                    db.Entry(b).State = EntityState.Modified;
                    db.SaveChanges();
                }
                

                db.SaveChanges();
                TempData["notice"] = "Books will be ready soon!";
                return RedirectToAction("Index");
            }
            return View();
        }