Result Validate(NewPollDto newPollInfo, string authorNickname)
{
if (newPollInfo.AuthorId < 16)
{
return(Result.CreateError(Errors.InvalidAuthorId, InvalidAuthorIdMsg));
}
if (newPollInfo.GuestNicknames == null || newPollInfo.GuestNicknames.Length < 1)
{
return(Result.CreateError(Errors.NotEnoughGuests, NotEnoughGuestsMsg));
}
if (newPollInfo.GuestNicknames.Select(n => n.ToLowerInvariant()).Contains(authorNickname.ToLowerInvariant()))
{
return(Result.CreateError(Errors.AuthorCannotBeGuest, AuthorCannotBeGuestMsg));
}
if (string.IsNullOrWhiteSpace(newPollInfo.Question))
{
return(Result.CreateError(Errors.EmptyQuestion, EmptyQuestionMsg));
}
if (newPollInfo.Proposals == null || newPollInfo.Proposals.Length < 2)
{
return(Result.CreateError(Errors.NotEnoughProposals, NotEnoughProposalsMsg));
}
if (newPollInfo.Proposals.Any(p => string.IsNullOrWhiteSpace(p)))
{
return(Result.CreateError(Errors.EmptyProposal, EmptyProposalMsg));
}
return(Result.CreateSuccess());
}
public async Task <Result <Poll> > CreatePoll(IUnitOfWork unitOfWork, IPollRepository pollRepository, IUserRepository userRepository, NewPollDto newPollInfo)
{
Result <User> author = await userRepository.FindById(newPollInfo.AuthorId);
if (!author.IsSuccess)
{
return(Result.Map <Poll>(author));
}
Result validation = Validate(newPollInfo, author.Value.Nickname);
if (!validation.IsSuccess)
{
return(Result.Map <Poll>(validation));
}
Poll poll = new Poll(0, newPollInfo.AuthorId, newPollInfo.Question, false);
Result pollCreation = await pollRepository.Create(poll);
if (!pollCreation.IsSuccess)
{
return(Result.Map <Poll>(pollCreation));
}
foreach (string proposalText in newPollInfo.Proposals)
{
poll.AddProposal(proposalText);
}
Proposal noProposal = await pollRepository.GetNoProposal();
foreach (string guestNickname in newPollInfo.GuestNicknames)
{
Result <User> guest = await userRepository.FindByNickname(guestNickname);
if (!guest.IsSuccess)
{
return(Result.Map <Poll>(guest));
}
poll.AddGuest(guest.Value.UserId, noProposal);
}
await unitOfWork.SaveChanges();
return(Result.CreateSuccess(poll));
}