public async Task HandleAsync(CreateSubmission command)
{
var speakersIds = command.SpeakersIds.Select(x => new AggregateId(x));
var speakers = await _speakerRepository.BrowserAsync(speakersIds);
if (speakers.Count() != speakersIds.Count())
{
throw new InvalidSpeakerNumberException(command.Id);
}
var submission = Submission.Create(command.Id, command.ConferenceId, command.Title, command.Description,
command.Level, command.Tags, speakers.ToList());
await _submissionRepository.AddAsync(submission);
var events = _eventMapper.MapAll(submission.Events);
await _messageBroker.PublishAsync(events.ToArray());
await _domainEventDispatcher.DispatchAsync(submission.Events.ToArray());
}
