public Appointment AddAppointment(Appointment appointment)
{
try
{
if (!IsAppointmentDateAvailableForGivenDoctor(appointment.AppointmentDate, appointment.Doctor.UserId))
{
throw new OccupiedAppointmentDateException(appointment.AppointmentDate, appointment.Doctor.UserId);
}
return(_appointmentDataAccess.AddAppointment(appointment).RemoveReferenceLoop());
}
catch (Exception e)
{
return(null);
}
}
