public CreateAttemptTokenResponse CreateAttemptToken(CreateAttemptTokenRequest request)
{
CreateAttemptTokenResponse response = new CreateAttemptTokenResponse();
try
{
Common.Helpers.ValidationHelper.ValidateRequiredField(request.Token, "Token");
InterviewToken token = InterviewToken.FromBytes(EncryptionHelper.DecryptURL(Convert.FromBase64String(request.Token)));
DbContext context = DataController.CreateDbContext();
long randomizer = Common.Helpers.RandomHelper.RandomLong();
Guid mostRecentAttemptId = context.Attempts
.Where(a => a.InterviewQuestionID == request.QuestionID)
.OrderByDescending(a => a.CreatedDate)
.Select(a => a.ID)
.FirstOrDefault();
AttemptToken attemptToken = new AttemptToken(request.QuestionID, randomizer, mostRecentAttemptId);
response.AttemptToken = Convert.ToBase64String(EncryptionHelper.EncryptToken(attemptToken.AsBytes()));
}
catch (AuthenticationException ex)
{
throw new WebFaultException<string>(ex.Message, System.Net.HttpStatusCode.BadRequest);
}
catch (Common.Exceptions.ValidationException ex)
{
throw new WebFaultException<string>(ex.Message, System.Net.HttpStatusCode.BadRequest);
}
catch (Exception ex)
{
ExceptionHelper.Log(ex, null);
throw new WebFaultException<string>("An unknown error has occurred.", System.Net.HttpStatusCode.InternalServerError);
}
return response;
}