public async Task <DomainValidationResult <Participant> > SnapshotChallengeParticipantAsync(
IChallenge challenge,
PlayerId gamePlayerId,
IDateTimeProvider synchronizedAt,
Func <IScoring, IImmutableSet <Match> > snapshotMatches,
CancellationToken cancellationToken = default
)
{
var result = new DomainValidationResult <Participant>();
if (!challenge.ParticipantExists(gamePlayerId))
{
result.AddFailedPreconditionError("Participant doesn't exists.");
}
if (result.IsValid)
{
var participant = challenge.FindParticipant(gamePlayerId);
var matches = snapshotMatches(challenge.Scoring);
participant.Snapshot(matches, synchronizedAt);
await _challengeRepository.CommitAsync(true, cancellationToken);
return(participant);
}
return(result);
}