public IActionResult AddGuestOnCheckin(string FullName, string Gender, string IdCard, int bookingid)
        {
            if (!GuestDAO.CheckIsExistGuestByIdCard(IdCard))
            {
                var guestid = GuestDAO.InsertGuest(new Guest()
                {
                    FullName     = FullName,
                    Gender       = Gender,
                    IDCardNumber = IdCard
                });

                var stay = StayDAO.InsertStay(new Stay()
                {
                    GuestID   = guestid,
                    BookingID = bookingid,
                    FromDate  = DateTime.Now,
                    ToDate    = null
                });

                return(Json(stay));
            }
            else
            {
                var guestid = GuestDAO.GetGuestByIdCardNumber(IdCard).GuestID;
                if (!StayDAO.CheckGuestStaying(guestid))
                {
                    var stay = StayDAO.InsertStay(new Stay()
                    {
                        GuestID   = guestid,
                        BookingID = bookingid,
                        FromDate  = DateTime.Now,
                        ToDate    = null
                    });

                    return(Json(stay));
                }
                else
                {
                    return(Json(null));
                }
            }
        }
        public IActionResult Checkin(int id, bool isEdit = true)
        {
            if (!Authentication.AuthenticateByCookie(HttpContext))
            {
                return(Redirect("/Receptionists/Authentication/Login?are=Receptionists&ctrl=Activities&act=Checkin"));
            }

            ViewBag.isEdit = isEdit;
            BookingModel model = BookingDAO.GetBookingModel(id);

            if (StayDAO.GetALLGuestsOfBooking(id).Count == 0)
            {
                StayDAO.InsertStay(new Stay()
                {
                    BookingID = model.BookingID,
                    Status    = null,
                    FromDate  = DateTime.Now,
                    GuestID   = model.Guest.GuestID,
                    ToDate    = null
                });
            }

            return(View(model));
        }