public async Task <DomainValidationResult <Invitation> > SendInvitationAsync(ClanId clanId, UserId userId, UserId ownerId)
{
var result = new DomainValidationResult <Invitation>();
if (!await _clanRepository.IsOwnerAsync(clanId, ownerId))
{
result.AddDebugError("Permission required.");
}
if (await _clanRepository.IsMemberAsync(userId))
{
result.AddDebugError("Target already in a clan.");
}
if (await _invitationRepository.ExistsAsync(ownerId, clanId))
{
result.AddFailedPreconditionError("The invitation from this clan to that member already exist.");
}
if (result.IsValid)
{
var invitation = new Invitation(userId, clanId);
_invitationRepository.Create(invitation);
await _invitationRepository.UnitOfWork.CommitAsync();
return(invitation);
}
return(result);
}