/*
* public async Task ExecuteAsync(AskQuestionCommand command)
* {
* var question = _aggregateRepository.Instantiate(command.QuestionId);
*
* // TODO: Move this into model validation
* if (!IsUnique(command.SubjectsTags))
* //TODO: Custom exception for this
* throw new Exception();
*
* await question.FireEventAsync(new QuestionAskedEvent(command.QuestionId, command.UserId, command.Title, command.Description, command.OccurredAtUtc, DateTime.UtcNow));
*
* foreach (var subjectTag in command.SubjectsTags)
* await question.FireEventAsync(new QuestionTaggedEvent(command.QuestionId, subjectTag.SubjectTag, command.OccurredAtUtc, DateTime.UtcNow));
*
* await question.SaveAsync();
* }
*
*
*/
public async Task ExecuteAsync(AskQuestionCommand command)
{
var processTimeUtc = _date.CurrentDateUtc();
AssertSubjectTagsAreUnique(command.SubjectsTags);
var question = _aggregateRepository.Instantiate(command.QuestionId);
await question.FireEventAsync(new QuestionAskedEvent(
command.QuestionId,
command.UserId,
command.Title,
command.Description,
command.OccurredAtUtc,
processTimeUtc));
await question.SaveAsync();
}
public async Task ExecuteAsync(AcceptAnswerCommand command)
{
var processedAtUtc = _date.CurrentDateUtc();
var question = await _aggregateRepository.RetrieveAsync(command.QuestionId);
if (question.State.UserId != command.UserId)
{
throw new UserPermissionException();
}
if (question.State.HasAcceptedAnswer)
{
throw new AnswerAlreadyAcceptedException(command.QuestionId);
}
if (question.State.Answers.All(x => x.AnswerId != command.AnswerId))
{
throw new AnswerNotFoundException();
}
await question.FireEventAsync(new AnswerAcceptedEvent(command.QuestionId, command.AnswerId, command.OccurredAtUtc, processedAtUtc));
await question.SaveAsync();
}