/// <summary>
/// The get quiz data by quiz id.
/// </summary>
/// <param name="quizId">
/// The quiz id.
/// </param>
/// <returns>
/// The <see cref="QuizDataDTO"/>.
/// </returns>
public QuizDataDTO getQuizDataByQuizID(int quizId)
{
var result = new QuizDataDTO {
quizVO = new QuizDTO(this.GetOneById(quizId).Value)
};
if (result.quizVO != null && result.quizVO.subModuleItemId.HasValue)
{
result.questions = this.GetQuizQuestionsBySMIId(result.quizVO.subModuleItemId.Value).ToArray();
result.distractors = this.GetQuizDistractorsBySMIId(result.quizVO.subModuleItemId.Value).ToArray();
}
return(result);
}
public QuizDataDTO getQuizDataByQuizGuid(Guid key)
{
var queryOver = new DefaultQueryOver <Quiz, int>().GetQueryOver().Where(x => x.Guid == key).Take(1);
var quiz = Repository.FindOne(queryOver).Value;
var result = new QuizDataDTO {
quizVO = new QuizDTO(quiz)
};
if (result.quizVO != null && result.quizVO.subModuleItemId.HasValue)
{
result.questions = this.GetQuizQuestionsBySMIId(result.quizVO.subModuleItemId.Value).ToArray();
result.distractors = this.GetQuizDistractorsBySMIId(result.quizVO.subModuleItemId.Value).ToArray();
}
return(result);
}
private int SaveQuestionResult(OfflineQuizAnswerDTO[] answers, QuizDataDTO quizData, QuizResult postQuizResult)
{
var score = 0;
foreach (var answer in answers)
{
var questionResult = new QuizQuestionResult();
var question = quizData.questions.First(x => x.questionId == answer.questionId);
//var distractors = quizData.questions.Where(x => x.questionId == answer.questionId).ToList();
var distractors = DistractorModel.GetAllByQuestionId(answer.questionId).ToList();
questionResult.Question = question.question;
var questionObj = QuestionModel.GetOneById(question.questionId).Value;
questionResult.QuestionRef = questionObj;
questionResult.QuestionType = questionObj.QuestionType;
questionResult.QuizResult = postQuizResult;
if (answer.trueFalseAnswer != null)
{
var shouldBeOneDistractor = distractors.FirstOrDefault();
if (shouldBeOneDistractor == null)
{
throw new InvalidOperationException("There should be a distractor for true/false question");
}
var isCorrect = answer.trueFalseAnswer.answer == (shouldBeOneDistractor.IsCorrect ?? false);
if (isCorrect)
{
score++;
}
questionResult.IsCorrect = isCorrect;
QuizQuestionResultModel.RegisterSave(questionResult, true);
}
if (answer.singleChoiceAnswer != null)
{
var quizDistractorAnswer = DistractorModel.GetOneById(answer.singleChoiceAnswer.answeredDistractorId).Value;
var quizQuestionResultAnswer = new QuizQuestionResultAnswer
{
QuizQuestionResult = questionResult,
Value = quizDistractorAnswer.DistractorName,
QuizDistractorAnswer = quizDistractorAnswer,
};
var distractor = distractors.FirstOrDefault(x => x.Id == quizDistractorAnswer.Id);
if (distractor == null)
{
throw new InvalidOperationException("How come answered distractor id is not present in question distractors???");
}
var isCorrect = distractor.IsCorrect ?? false;
if (isCorrect)
{
score++;
}
questionResult.IsCorrect = isCorrect;
QuizQuestionResultModel.RegisterSave(questionResult, true);
QuizQuestionResultAnswerModel.RegisterSave(quizQuestionResultAnswer);
}
if (answer.multiChoiceAnswer != null)
{
var correctDistractors = distractors.Where(x => x.IsCorrect ?? false).Select(x => x.Id);
var isCorrect = correctDistractors.SequenceEqual(answer.multiChoiceAnswer.answeredDistractorIds);
if (isCorrect)
{
score++;
}
questionResult.IsCorrect = isCorrect;
QuizQuestionResultModel.RegisterSave(questionResult, true);
foreach (var answeredDistractorId in answer.multiChoiceAnswer.answeredDistractorIds)
{
var distrator = distractors.First(x => x.Id == answeredDistractorId);
var quizQuestionResultAnswer = new QuizQuestionResultAnswer
{
QuizQuestionResult = questionResult,
Value = distrator.DistractorName,
QuizDistractorAnswer = distrator,
};
QuizQuestionResultAnswerModel.RegisterSave(quizQuestionResultAnswer);
}
}
}
return(score);
}