public IActionResult SubmitQuestion(UserAnswerDto userAnswerDto, int id)
{
var question = _questionRepository.GetQuestionId(userAnswerDto.QuestionId);
foreach (var answer in question.Answers)
{
if (answer.Correct && answer.Id == userAnswerDto.AnswerId)
{
_teamRepository.IncrementTeam(userAnswerDto.TeamId);
}
}
return(Ok(new MessageDto("Done")));
}
public async Task SaveResult(UserAnswerDto dto)
{
//save result
Result result = new Result
{
ExamId = dto.ExamId,
UserId = dto.UserId,
Time = dto.Time,
TotalCorrect = dto.TotalCorrect,
DateAt = DateTime.Now
};
await _context.Results.AddAsync(result);
await _context.SaveChangesAsync();
//get old fail
var failQuestions = await _context.FailQuestions.Where(s => s.UserId == dto.UserId).ToListAsync();
var failQuestionIds = failQuestions.Select(s => s.QuestionId);
//add new fail
var newFails = dto.Answers.Where(s => !s.IsRight).Select(s => s.QuestionId);
var needToAdd = newFails.Except(failQuestionIds)
.Select(s => new FailQuestion
{
QuestionId = s,
UserId = dto.UserId,
Times = 1,
Passed = false
});
await _context.FailQuestions.AddRangeAsync(needToAdd);
//update times fail
var increaseTimesIds = failQuestionIds.Intersect(newFails);
var increaseTimes = failQuestions.Where(s => increaseTimesIds.Contains(s.Id)).Select(s => s);
foreach (var old in increaseTimes)
{
old.Times += 1;
}
_context.FailQuestions.UpdateRange(increaseTimes);
//update passed
var newCorrects = dto.Answers.Where(s => s.IsRight).Select(s => s.QuestionId);
var passed = failQuestions.Where(s => newCorrects.Contains(s.QuestionId)).Select(s => s);
foreach (var old in passed)
{
old.Passed = true;
}
_context.FailQuestions.UpdateRange(passed);
await _context.SaveChangesAsync();
}
/// <summary>
/// Выполняет проверку ответов пользователя
/// </summary>
/// <param name="sourceQuizBlock">Исходный блок теста.</param>
/// <param name="answeredQuizBlock">Блок теста с ответом пользователя.</param>
/// <returns>Значение, показывающее, правильно ли ответил пользователь.</returns>
public static bool CheckQuizAnswer(QuizBlockDto sourceQuizBlock, UserAnswerDto answeredQuizBlock)
{
var userAnswerList = answeredQuizBlock.UserAnswer.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
var blockAnswerList = sourceQuizBlock.Answers.Where(e => e.IsCorrect).ToList();
//// Если нет пользовательских ответов - ответ некорректный.
if (!userAnswerList.Any())
{
return(false);
}
//// Проверим ответы.
var allIsCorrect = true;
foreach (var blockAnswer in blockAnswerList)
{
switch (blockAnswer.AnswerType)
{
case AnswerBlockType.Text:
var firstUserAnswer = userAnswerList.First().Trim();
var firstBlockAnswer = blockAnswer.Text.Trim();
allIsCorrect &= firstBlockAnswer.Equals(firstUserAnswer, StringComparison.InvariantCultureIgnoreCase);
break;
case AnswerBlockType.Checkbox:
case AnswerBlockType.Radio:
allIsCorrect &= userAnswerList.Contains(blockAnswer.Id.ToString());
break;
default:
throw new ArgumentOutOfRangeException(nameof(blockAnswer.AnswerType));
}
}
return(allIsCorrect);
}
