public IActionResult Checkquiz([FromBody] UserAnswersDto userAnswers)
{
try
{
if (userAnswers == null)
{
return(Json(new { Result = false, Message = "ERROR - Dane nie zostały przesłane." }));
}
var quiz = _context.Quiz.Where(q => q.Id == userAnswers.QuizId).FirstOrDefault();
if (quiz == null)
{
return(Json(new { Result = false, Message = "ERROR - Quiz o podanym Id nie istnieje." }));
}
int Points = 0;
var questionsDB = _context.Question.Where(q => q.QuizId == quiz.Id);
foreach (var item in userAnswers.QuestionAnswers)
{
var questionDB = questionsDB.Where(q => q.Id == item.QuestionId).FirstOrDefault();
bool CorrectAnswerOnQuestion = true;
if (questionDB != null)
{
var qAnswersDB = _context.Answer.Where(q => q.QuestionId == questionDB.Id);
foreach (var itemAnswer in qAnswersDB)
{
var x = item.SelectedAnswersId.Where(q => q == itemAnswer.Id);
if (((x == null || x.Count() == 0) && itemAnswer.Correct) ||
(x != null && x.Count() > 0 && !itemAnswer.Correct))
{
CorrectAnswerOnQuestion = false;
break;
}
}
if (CorrectAnswerOnQuestion)
{
Points += 1;
}
}
else
{
return(Json(new { Result = false, Message = "ERROR - Pytanie o podanym Id nie istnieje." }));
}
}
float score = (float)Points / (float)questionsDB.Count();
if (score > 0)
{
score *= 100;
}
return(Json(new { Result = true, score = score }));
}
catch (Exception e)
{
return(Json(new { Result = false, Message = "Nieznany bład", ErrorMessage = e.Message }));
}
}
public async Task <ActionResult <TestResultDto> > GetTestResult(int testId, [FromBody] UserAnswersDto userAnswersDto)
{
if (userAnswersDto != null && ModelState.IsValid)
{
var testResult = await _testService.GetTestResult(testId, userAnswersDto);
return(Ok(testResult));
}
return(BadRequest("Failed to update test"));
}
public async Task <TestResultDto> GetTestResult(int testId, UserAnswersDto userAnswersDto)
{
var testResult = ComputeResults(testId, userAnswersDto);
testResult.TestId = testId;
testResult.StartedAt = userAnswersDto.StartedAt;
testResult.EndedAt = userAnswersDto.EndedAt;
testResult.UserName = userAnswersDto.UserName;
await _testResultRepository.AddAsync(testResult);
return(_mapper.Map <TestResultDto>(testResult));
}
private TestResult ComputeResults(int testId, UserAnswersDto userAnswersDto)
{
var testResult = new TestResult();
var test = GetTestById(testId);
var testQuestions = test.Questions.ToList();
var userQApairs = userAnswersDto.QApairs.ToList();
foreach (var qapair in userQApairs)
{
if (qapair.AnswerId == 0)
{
testResult.SkippedCount++;
}
else
{
var testQuestion = testQuestions.FirstOrDefault(q => q.Id == qapair.QuestionId);
if (testQuestion == null)
{
throw new ArgumentException("No question with this id");
}
var answer = testQuestion.QuestionAnswers.FirstOrDefault(qa => qa.Id == qapair.AnswerId);
if (answer == null)
{
throw new ArgumentException("No answer with this id");
}
if (answer.IsCorrect)
{
testResult.CorrectCount++;
testResult.Points += testQuestion.Points;
}
else
{
testResult.IncorrectCount++;
}
}
}
return(testResult);
}
