public async Task <IActionResult> QuizStart([FromForm] QuizStartViewModel model)
{
var requiredQuiz = await _dbContext.Quizzes
.Where(e => e.Id == model.QuizId)
.FirstOrDefaultAsync()
.ConfigureAwait(false);
if (requiredQuiz == null)
{
return(StatusCode(404, $"Тест с заданным идентификатором ({model.QuizId}) не найден."));
}
var currentUser = await _userManager.GetUserAsync(HttpContext.User);
if (currentUser == null)
{
ModelState.AddModelError("UnknownUser", "Невозможно определить пользователя в этой сессии");
return(View(model));
}
var generatedQuiz = new GeneratedQuizDto
{
Tag = Guid.NewGuid().ToString().Replace("-", string.Empty),
StartTime = DateTime.Now,
SourceQuiz = requiredQuiz,
RespondentUser = currentUser,
UserAnswers = new List <UserAnswerDto>()
};
await _dbContext.UserQuizzes.AddAsync(generatedQuiz).ConfigureAwait(false);
await _dbContext.SaveChangesAsync().ConfigureAwait(false);
return(RedirectToAction("QuizProcess", "Testing", new { token = generatedQuiz.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 преобразование результатов теста в модель.
/// </summary>
/// <param name="dto">DTO результата тестирования.</param>
/// <returns>Перечисление моделей блоков теста.</returns>
private IEnumerable <ResultQuizBlockViewModel> TranslateSessionResultModel(GeneratedQuizDto dto)
{
foreach (var quizBlockDto in dto.SourceQuiz.QuizBlocks)
{
var quizBlockModel = new ResultQuizBlockViewModel();
quizBlockModel.BlockId = quizBlockDto.Id;
quizBlockModel.Question = new ResultQuestionBlockViewModel();
quizBlockModel.Question.Text = quizBlockDto.Question.Text;
quizBlockModel.Question.QuestionType = quizBlockDto.Question.QuestionType;
foreach (var answerBlockDto in quizBlockDto.Answers)
{
var answerBlockModel = new ResultAnswerBlockViewModel();
answerBlockModel.Text = answerBlockDto.Text;
answerBlockModel.AnswerType = answerBlockDto.AnswerType;
answerBlockModel.IsCorrect = answerBlockDto.IsCorrect;
answerBlockModel.IsAnswered = false;
quizBlockModel.Answers.Add(answerBlockModel);
var userAnswerDto = dto.UserAnswers.FirstOrDefault(e => e.QuizBlockId == quizBlockDto.Id);
if (userAnswerDto != null)
{
var userAnswerList = userAnswerDto.UserAnswer.Split(new[] { Environment.NewLine }, StringSplitOptions.None);
switch (answerBlockDto.AnswerType)
{
case AnswerBlockType.Text:
var firstUserAnswer = userAnswerList.First().Trim();
var firstBlockAnswer = answerBlockDto.Text.Trim();
answerBlockModel.IsAnswered = firstBlockAnswer.Equals(firstUserAnswer, StringComparison.InvariantCultureIgnoreCase);
answerBlockModel.Text += " / " + firstUserAnswer;
break;
case AnswerBlockType.Checkbox:
case AnswerBlockType.Radio:
answerBlockModel.IsAnswered = userAnswerList.Contains(answerBlockDto.Id.ToString());
break;
default:
throw new ArgumentOutOfRangeException(nameof(answerBlockDto.AnswerType));
}
}
answerBlockModel.AdditionalStyle = answerBlockModel.IsCorrect == answerBlockModel.IsAnswered
? answerBlockModel.IsCorrect
? "is-valid"
: ""
: "is-invalid";
}
yield return(quizBlockModel);
}
}
