// Private method to save User test results.
private async Task <OperationDetails> SaveCurrentTestResults(int?id, string currentUserId, TestResultViewModel testResult)
{
bool isTopicTest;
OperationDetails operationDetails;
try
{
// I. Checks.
if (id != null)
{
if (!int.TryParse(id.ToString(), out int intId) || intId > 1 || intId < 0)
{
operationDetails = new OperationDetails(false, "Incorrect parameter id!", "TestController.SaveCurrentTestResults");
return(operationDetails);
}
if (intId == 1)
{
isTopicTest = true;
}
else
{
isTopicTest = false;
}
}
else
{
operationDetails = new OperationDetails(false, "Incorrect parameter id!", "TestController.SaveCurrentTestResults");
return(operationDetails);
}
// II. Create TestResultDTO object and set its properties.
TestResultDTO testResultDTO = new TestResultDTO()
{
UserProfileId = currentUserId,
Result = testResult.Result,
MaxScore = testResult.MaxScore,
IsPassedTest = testResult.IsPassedTest,
IsTopicTest = isTopicTest
};
// III. Add a test result to DB.
operationDetails = await TestResultService.CreateAsync(testResultDTO, currentUserId);
if (!operationDetails.Succedeed)
{
return(operationDetails);
}
// IV. Add test result details to DB.
foreach (var item in testResult.TestResultDetails)
{
TestResultDetailDTO testResultDetailDTO = new TestResultDetailDTO()
{
TestResultId = testResultDTO.TestResultId,
QuestionId = item.QuestionId,
IsProperAnswer = item.IsProperAnswer
};
operationDetails = await TestResultDetailService.CreateAsync(testResultDetailDTO, currentUserId);
if (!operationDetails.Succedeed)
{
return(operationDetails);
}
}
// V.
return(new OperationDetails(true, "Test results have successfully added to DB!", "TestController.SaveCurrentTestResults"));
}
catch (Exception ex)
{
return(new OperationDetails(false, "Failed to add test results to DB! Exception: " + ex.Message, "TestController.SaveCurrentTestResults"));
}
}
