public async Task RegisterAttendeeAsync(RegisterAttendeeAtSeminar cmd)
{
cmd.Validate();
var seminar = await _seminarDao.GetAsync(cmd.Id);
if (seminar == null)
{
throw new ObjectAlreadyExitsException(cmd.Id, typeof(Seminar));
}
await _seminarDao.AddAttendeeAsync(seminar.RegisterAttendee(cmd));
}
public SeminarAttendee RegisterAttendee(RegisterAttendeeAtSeminar cmd)
{
var exist = RegisteredAttendees.Any(attendee => attendee.Id == cmd.AttendeeId);
if (exist)
{
throw new ObjectAlreadyExitsException(cmd.AttendeeId, typeof(SeminarAttendee));
}
var registeredAttendee = new SeminarAttendee
{
Id = cmd.AttendeeId,
SeminarId = cmd.Id,
RegistrationTime = DateTime.Now
};
RegisteredAttendees.Add(registeredAttendee);
return(registeredAttendee);
}
