public VerificationRequest ValidateCode(VerificationCode code)
{
var validatedRequest = new VerificationRequest(this.UserId, this.VerificationType, this.Status, this.ExpiryDate, this.Code, this.Attempts);
validatedRequest.Attempts++;
if (this.Status != VerificationRequestStatus.Pending)
{
return(validatedRequest);
}
if (this.ExpiryDate < DateTime.UtcNow)
{
validatedRequest.Status = VerificationRequestStatus.Expired;
return(validatedRequest);
}
if (this.Code.Equals(code))
{
validatedRequest.Status = VerificationRequestStatus.Confirmed;
}
else if (validatedRequest.Attempts == 3)
{
validatedRequest.Status = VerificationRequestStatus.Failed;
}
return(validatedRequest);
}
public VerificationRequest(
string userId,
VerificationType verificationType,
VerificationRequestStatus status,
DateTime expiryDate,
VerificationCode code,
int attempts)
{
this.UserId = userId;
this.ExpiryDate = expiryDate;
this.VerificationType = verificationType;
this.Code = code;
this.Status = status;
this.Attempts = attempts;
}
public async Task <bool> VerifyCode(VerificationType type, string userId, VerificationCode code)
{
var storedCodeRequest = await this.verificationRequestRepository.GetVerificationRequest(type, userId);
if (storedCodeRequest == null)
{
this.logger.LogWarning("User ({userId}) tried to verify a code that hasn't been requested", userId);
return(false);
}
var validatedRequest = storedCodeRequest.ValidateCode(code);
await this.verificationRequestRepository.UpdateAttemptedRequest(validatedRequest);
// todo problem+json stuff KYC-36
return(validatedRequest.Status == VerificationRequestStatus.Confirmed);
}
public async Task <bool> GenerateCode(VerificationType type, string userId, Func <VerificationCode, Task> onSuccessfulGeneration)
{
var outstandingRequest = await this.verificationRequestRepository.GetVerificationRequest(type, userId);
if (outstandingRequest != null && outstandingRequest.IsActive())
{
this.logger.LogInformation("User {userId} tried to request an active code when one was already available", userId);
return(false);
}
var verificationRequest = VerificationRequest.GenerateNewVerificationRequest(userId, type, VerificationCode.Generate());
await this.verificationRequestRepository.StoreNewVerificationRequest(verificationRequest); // todo config the time KYC-43
try
{
await onSuccessfulGeneration(verificationRequest.Code);
}
catch (SenderException)
{
this.logger.LogWarning("Failed to dispatch verification code to user");
return(false);
}
return(true);
}
public static VerificationRequest GenerateNewVerificationRequest(string userId, VerificationType vericationType, VerificationCode code)
{
if (string.IsNullOrWhiteSpace(userId))
{
throw new ArgumentNullException(nameof(userId));
}
if (code == null)
{
throw new ArgumentNullException(nameof(code));
}
// todo configure expiry time KYC-43
return(new VerificationRequest(userId, vericationType, VerificationRequestStatus.Pending, DateTime.UtcNow.Add(TimeSpan.FromMinutes(15)), code, 0));
}
