public async Task <IActionResult> QuizProcess([FromForm] GeneratedQuizModel model)
{
var quizDto = await _dbContext.UserQuizzes
.Where(e => e.Id == model.Id)
.Include(e => e.UserAnswers)
.FirstOrDefaultAsync()
.ConfigureAwait(false);
if (quizDto == null)
{
return(StatusCode(404, $"Тест с заданным идентификатором ({model.Id}) не найден."));
}
quizDto.UserAnswers = new List <UserAnswerDto>();
quizDto.IsEnded = true;
quizDto.EndTime = DateTime.Now;
if (model.SourceQuiz.QuizBlocks != null)
{
foreach (var quizBlock in model.SourceQuiz.QuizBlocks)
{
var userAnswerString = "";
if (quizBlock.UserAnswer != null)
{
foreach (var userAnswer in quizBlock.UserAnswer)
{
if (!string.IsNullOrWhiteSpace(userAnswerString))
{
userAnswerString += Environment.NewLine;
}
int userAnswerInt;
if (int.TryParse(userAnswer, out userAnswerInt))
{
var answerBlock = quizBlock.Answers[userAnswerInt];
userAnswerString += answerBlock.Id;
}
else
{
userAnswerString += userAnswer;
}
}
}
quizDto.UserAnswers.Add(new UserAnswerDto
{
GeneratedQuizId = model.Id,
QuizBlockId = quizBlock.Id,
UserAnswer = userAnswerString,
});
}
}
_dbContext.UserQuizzes.Update(quizDto);
await _dbContext.SaveChangesAsync().ConfigureAwait(false);
return(RedirectToAction("Results", "Testing", new { token = quizDto.Tag }));
}
/// <summary>
/// Выполняет преобразование <see cref="GeneratedQuizDto"/> в <see cref="GeneratedQuizModel"/>.
/// </summary>
/// <param name="dto">Исходный объект.</param>
/// <returns>Преобразованный объект.</returns>
public static GeneratedQuizModel Translate(GeneratedQuizDto dto)
{
var model = new GeneratedQuizModel
{
Id = dto.Id,
StartTime = dto.StartTime,
SourceQuiz = Translate(dto.SourceQuiz),
};
return(model);
}
/// <summary>
/// Выполняет перемешивание вопросов и ответов в тесте.
/// </summary>
/// <param name="quiz">Исходный тест.</param>
/// <returns>Тест с перемешанными данными.</returns>
public static GeneratedQuizModel ShuffleQuizData(GeneratedQuizModel quiz)
{
var rnd = new Random(quiz.StartTime.Millisecond);
quiz.SourceQuiz.QuizBlocks = quiz.SourceQuiz.QuizBlocks.Shuffle(rnd).ToList();
foreach (var quizBlock in quiz.SourceQuiz.QuizBlocks)
{
quizBlock.Answers = quizBlock.Answers.Shuffle(rnd).ToList();
}
return(quiz);
}