public async Task <DomainValidationResult <IChallenge> > DeleteChallengeAsync(IChallenge challenge, CancellationToken cancellationToken = default)
{
var result = new DomainValidationResult <IChallenge>();
if (!challenge.CanDelete())
{
result.AddFailedPreconditionError("Challenge can't be deleted.");
}
if (result.IsValid)
{
_challengeRepository.Delete(challenge);
await _challengeRepository.CommitAsync(true, cancellationToken);
return(challenge.Cast <Challenge>());
}
return(result);
}
