public async Task <Signature> Create([FromBody] BlockChain electionChain)
{
Signature result = null;
try
{
UOW.BeginTransaction();
Signature signature = this.GetSignatureFromBlockChain(electionChain);
// now check to make sure the nonce matches the expected nonce
(int expectedNonce, Guid ballotRequestId) = await this.signatureRepository.GetExpectedNonce(UOW, signature.BallotId);
if (ballotRequestId != Guid.Empty)
{
var br = await ballotRepository.BallotRequestGetById(Context, ballotRequestId);
// make sure the nonce and device id are correct
if (signature == null || expectedNonce != electionChain.GetLatestBlock().Nonce ||
(br != null && signature.DeviceId != br.DeviceId))
{
return(null);
}
Signature existingSignature = await this.GetByBallotId(signature.BallotId);
if (existingSignature != null)
{
result = await signatureRepository.UpdateBallotVotes(UOW, existingSignature, signature);
}
else
{
result = await this.InsertNewSignatureBallot(UOW, signature);
}
UOW.SaveChanges();
}
}
catch (Exception ex)
{
string err = ex.Message;
}
finally
{
UOW.CloseTransaction();
}
return(result);
}
