/// <summary>
        /// Updates the appointment by saving the appt passed in.
        /// </summary>
        /// <param name="appt"> The appt that is being updated. </param>
        public static void UpdateAppointment(Appointment appt)
        {
            if (VerifyAppointmentStatus(appt))
            {
                using (RTDbContext Context = InitializeDatabaseContext())
                {
                    // Add appointment
                    Context.Appointments.AddOrUpdate(appt);

                    // Retrieve all coordinates for appointment
                    var coordsForAppt = Context.Coordinates.ToList <Coordinate>().Where(coord => coord.apptId == appt.Id);

                    // Delete coordinates
                    foreach (Coordinate c in coordsForAppt)
                    {
                        if (!appt.Coordinates.Any(co => co.Id == c.Id))
                        {
                            Context.Coordinates.Remove(c);
                            Context.SaveChangesAsync();
                        }
                    }

                    // Add coordinates
                    foreach (Coordinate c in appt.Coordinates)
                    {
                        c.apptId = appt.Id;
                        Context.Coordinates.AddOrUpdate(c);
                    }

                    Context.SaveChangesAsync();
                }
            }
        }
        /// <summary>
        /// Updates the current override to whatever is provided
        /// </summary>
        public static void SetOverrideForSensor(SensorItemEnum item, bool doOverride)
        {
            using (RTDbContext Context = InitializeDatabaseContext())
            {
                var overrides = Context.Override.Where <Override>(t => t.sensor_name == item.ToString()).ToList <Override>();

                if (overrides.Count() != 1)
                {
                    throw new InvalidOperationException();
                }

                Override current = overrides[0];
                current.Overridden = Convert.ToSByte(doOverride);

                Context.Override.AddOrUpdate(current);

                Context.SaveChangesAsync();
            }
        }