//Create Method
public static void Create(AppointmentModel appointment)
{
if (!IsProviderAvailable(appointment))
{
throw new Exception("The selected service provider is not available for an appointment at this time.");
}
if (!IsClientAvailable(appointment))
{
throw new Exception("The selected customer already has an appointment booked at this time.");
}
appointment.Id = Interlocked.Increment(ref appointmentCounter);
appointment.Provider = ServiceProviderRepository.Read(appointment.Provider.Id);
appointment.Client = CustomerRepository.Read(appointment.Client.Id);
_appointments.Add(appointment);
}
//Update Method
public static void Update(int id, AppointmentModel appointment)
{
if (!IsProviderAvailable(appointment))
{
throw new Exception("The selected service provider is not available for an appointment at this time.");
}
if (!IsClientAvailable(appointment))
{
throw new Exception("The selected customer already has an appointment booked at this time.");
}
var index = _appointments.FindIndex(x => x.Id == id);
_appointments.RemoveAt(index);
appointment.Id = id;
appointment.Provider = ServiceProviderRepository.Read(appointment.Provider.Id);
appointment.Client = CustomerRepository.Read(appointment.Client.Id);
_appointments.Insert(index, appointment);
}