public QuizSolution SaveSolution(SolutionForEvaluationModel quizSolution, string userId)
{
var quiz = this.quizzes.GetById(quizSolution.ForQuizId);
if (quizSolution.SelectedAnswerIds.Count != quiz.NumberOfQuestions &&
quizSolution.SelectedAnswerIds.Count != quiz.Questions.Count)
{
throw new QuizEvaluationException("Invalid Solution: Questions count mismatch");
}
List <Answer> selectedAnswers = this.ExtractSelectedAnswers(quiz, quizSolution);
var newSolution = new QuizSolution
{
ByUserId = userId,
ForQuiz = quiz,
SelectedAnswers = selectedAnswers
};
try
{
this.solutions.Add(newSolution);
this.solutions.Save();
}
catch (Exception ex)
{
// Todo: Implement concrete exception cases
throw new QuizEvaluationException("Something went wrong while saving your solution.", ex);
}
return(newSolution);
}
public QuizEvaluationResult EvaluateSolution(QuizSolution quizSolution)
{
var result = new QuizEvaluationResult
{
ForQuizId = quizSolution.ForQuizId,
Title = quizSolution.ForQuiz.Title,
CorrectlyAnswered = new List<QuestionResultModel>(),
IncorrectlyAnswered = new List<QuestionResultModel>()
};
foreach (Answer answer in quizSolution.SelectedAnswers)
{
var questionResult = new QuestionResultModel
{
Question = answer.ForQuestion.Title,
IsCorrect = answer.IsCorrect,
ResultDescription = answer.ForQuestion.ResultDescription,
SelectedAnswer = answer.Text,
CorrectAnswer = answer.ForQuestion
.Answers.First(a => a.IsCorrect).Text
};
if (answer.IsCorrect)
{
result.CorrectlyAnswered.Add(questionResult);
}
else
{
result.IncorrectlyAnswered.Add(questionResult);
}
}
return result;
}
public QuizEvaluationResult EvaluateSolution(QuizSolution quizSolution)
{
var result = new QuizEvaluationResult
{
ForQuizId = quizSolution.ForQuizId,
Title = quizSolution.ForQuiz.Title,
CorrectlyAnswered = new List <QuestionResultModel>(),
IncorrectlyAnswered = new List <QuestionResultModel>()
};
foreach (Answer answer in quizSolution.SelectedAnswers)
{
var questionResult = new QuestionResultModel
{
Question = answer.ForQuestion.Title,
IsCorrect = answer.IsCorrect,
ResultDescription = answer.ForQuestion.ResultDescription,
SelectedAnswer = answer.Text,
CorrectAnswer = answer.ForQuestion
.Answers.First(a => a.IsCorrect).Text
};
if (answer.IsCorrect)
{
result.CorrectlyAnswered.Add(questionResult);
}
else
{
result.IncorrectlyAnswered.Add(questionResult);
}
}
return(result);
}
public IQuizEvaluationResult Evaluate(QuizSolution solution)
{
var result = this.CreateEvaluation(solution);
var answersByQuestionId = this.GetAnswersByQuestionId(solution);
return(this.AddSelectedAnswers(answersByQuestionId, result));
}
public QuizSolution SaveSolution(SolutionForEvaluationModel quizSolution, string userId)
{
var quiz = this.quizzes.GetById(quizSolution.ForQuizId);
if (quizSolution.SelectedAnswerIds.Count != quiz.NumberOfQuestions &&
quizSolution.SelectedAnswerIds.Count != quiz.Questions.Count)
{
throw new QuizEvaluationException("Invalid Solution: Questions count mismatch");
}
List<Answer> selectedAnswers = this.ExtractSelectedAnswers(quiz, quizSolution);
var newSolution = new QuizSolution
{
ByUserId = userId,
ForQuiz = quiz,
SelectedAnswers = selectedAnswers
};
try
{
this.solutions.Add(newSolution);
this.solutions.Save();
}
catch (Exception ex)
{
// Todo: Implement concrete exception cases
throw new QuizEvaluationException("Something went wrong while saving your solution.", ex);
}
return newSolution;
}
private IQuizEvaluationResult CreateEvaluation(QuizSolution solution)
{
var result = this.mapper.Map <QuizEvaluationResult>(solution.ForQuiz);
return(result);
}
private IDictionary <int, Answer> GetAnswersByQuestionId(QuizSolution solution)
{
var result = solution.SelectedAnswers.ToDictionary(key => key.ForQuestionId);
return(result);
}
public ActionResult QuizResult(Parameter p)
{
if (p.Id == 0)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
LoginDetails loginDetails = (LoginDetails)Session["loginDetails"];
if (loginDetails == null)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
int user = (int)Session["user"];
if (user != 2)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
object o = Session["selectedClass"];
if (o == null)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
int id = (int)o;
Course course = data.GetCourse(id);
if (course == null)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
Quiz q = data.GetQuiz(p.Id);
if (q == null)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
int count = (from x in course.Quizzes
where x.Id == q.Id
select x).Count();
if (count == 0)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
Student s = data.GetStudent(loginDetails.Username);
if (!data.DoesSolutionExist(q.Id, s.Id))
{
return(RedirectToAction("Quiz", new { Id = p.Id }));
}
QuizSolution qs = data.GetQuizSolution(q.Id, s.Id);
if (qs == null)
{
return(RedirectToAction("PageNotFoundError", "Home"));
}
return(View(new StudentCourseViewModel {
course = course, quiz = q, solution = qs, student = s
}));
}
