public IActionResult QuestionAnswer(string questionAnswer, int questionId)
{
Console.WriteLine(questionId);
Console.WriteLine(questionAnswer);
var user = User.GetUserId();
var thisQuestion = _db.Questions.Include(questions => questions.Quiz).FirstOrDefault(questions => questions.QuestionId == questionId);
var thisQuiz = _db.CompletedQuizzes.FirstOrDefault(quizzes => quizzes.UserId == user && quizzes.QuizId == thisQuestion.QuizId);
CompletedQuestion newCompletedQuestion = new CompletedQuestion(thisQuiz.CompletedQuizId, user, thisQuestion.QuestionId, questionAnswer, thisQuestion.CorrectAnswer);
_db.CompletedQuestions.Add(newCompletedQuestion);
_db.SaveChanges();
return(Json(newCompletedQuestion.QuestionAnswer));
}
public ICollection <CompletedQuestion> MapQuestionsFromDto(IEnumerable <CompletedQuestionDto> questionsDto, SurveyDbContext context)
{
var completedQuestions = new List <CompletedQuestion>();
foreach (var q in questionsDto)
{
var question = context.Questions.Where(m => m.QuestionId == q.QuestionId)
.Include(m => m.QuestionType)
.Include(m => m.QuestionGroup)
.First();
var completedQuestion = new CompletedQuestion(question, q.Answer);
completedQuestions.Add(completedQuestion);
}
return(completedQuestions);
}
public void TestAddCompletedQuestionToCompletedSurvey()
{
var options = SqliteInMemory.CreateOptions <SurveyDbContext>();
using (var context = new SurveyDbContext(options))
{
context.Database.EnsureCreated();
context.SeedDataBaseWithSurveys();
var completedSurvey = context.CompletedSurveys.First();
var type = new QuestionType("Text");
var question = new Question("How has your sleep pattern been?", type);
var completedQuestion = new CompletedQuestion(question, "It's not been great.", completedSurvey);
var status = completedSurvey.AddQuestion(completedQuestion, context);
status.Errors.ShouldBeEmpty();
status.HasErrors.ShouldBeFalse();
status.Message.ShouldEqual("Success");
context.SaveChanges();
completedSurvey.CompletedQuestions.Count().ShouldEqual(2);
}
}
private void StartQuizButton_Click(object sender, EventArgs e)
{
//Hides the main form
this.Hide();
CalculateDifficulty cd = new CalculateDifficulty(); //Claculated difficulty is initilised
//Trys to decide which option the user wants.
//Adaptive question order: Questions answered incorrectly are presented more often than the correct ones
//Standard: Questions are presented normally
//If the user hasn`t selected an option a null exception is thrown
try
{
if (SelectModeComboBox.SelectedItem.ToString() == "Adaptive Questions Order")
{
foreach (CompletedQuestion cq in completedQuestion)
{
if ((cq.CalculatedDifficulty > 80) && (cq.XCompleted > 5))
{
//This removes the question from the quiz so that the user doesn`t answer this question that they have already answered correctly the majority of times
storedQuizQuestions.Remove(storedQuizQuestions.Find(x => x.QuestionId == cq.QuestionId));
}
}
}
}
catch (System.NullReferenceException)
{
//The null excpetion is caught and this message is displayed
MessageBox.Show("Please Select A Question Mode", "Error", MessageBoxButtons.OK);
return;
}
//The stored quiz question need to be shuffled so this line of code does that
List <StoredQuizQuestions> ShuffledQuizQuestions = storedQuizQuestions.OrderBy(x => Guid.NewGuid()).ToList();
foreach (StoredQuizQuestions QuizQuestion in ShuffledQuizQuestions)
{
StoredQuestions CurrentQuestion = (storedQuestions.Find(x => x.QuestionId == QuizQuestion.QuestionId)); //The current question is saved to the varaible called current question
CompletedQuestion CurrentCompletedQuestion = (completedQuestion.Find(x => x.QuestionId == QuizQuestion.QuestionId));
if (CurrentQuestion.PictureUrl == "") //If there is no picture URL then it doesn`t have a picture
{
var page2 = new TextQuestionForm(CurrentQuestion); //The next form is created
page2.Answered += (source, Correct) => //This event is used to return the answer that the user selects and treats it accordingly based upon if the correct bool is true or false
{
//Question is removed from both storedquestion and completedquestion
storedQuestions.Remove(CurrentQuestion);
completedQuestion.Remove(CurrentCompletedQuestion);
//If the user has ansewred correctly then the current quiz question`s XAnsweredCorrect will increase by one
if (Correct == true)
{
CurrentQuestion.XAnsweredCorrectly++;
CurrentCompletedQuestion.XCorrect++;
}
//Regardless of if the answer was answered correctly the times answered counter must also increment by one
CurrentQuestion.XAnswered++;
CurrentCompletedQuestion.XCompleted++;
//The difficulty rating must be recalculated
CurrentQuestion.CalculatedDifficulty = cd.CalcDifficulty(CurrentQuestion.XAnswered, CurrentQuestion.XAnsweredCorrectly);
CurrentCompletedQuestion.CalculatedDifficulty = cd.CalcDifficulty(CurrentCompletedQuestion.XCompleted, CurrentCompletedQuestion.XCorrect);
//The question is added back to the storedquestion and complted question lists
storedQuestions.Add(CurrentQuestion);
completedQuestion.Add(CurrentCompletedQuestion);
};
//Displays the question answering form
page2.ShowDialog();
}
else
{
var page2 = new PictureQuestionForm(CurrentQuestion);
page2.Answered += (source, Correct) =>
{
//Question is removed from both storedquestion and completedquestion
storedQuestions.Remove(CurrentQuestion);
completedQuestion.Remove(CurrentCompletedQuestion);
//If the user has ansewred correctly then the current quiz question`s XAnsweredCorrect will increase by one
if (Correct == true)
{
CurrentQuestion.XAnsweredCorrectly++;
CurrentCompletedQuestion.XCorrect++;
}
//Regardless of if the answer was answered correctly the times answered counter must also increment by one
CurrentQuestion.XAnswered++;
CurrentCompletedQuestion.XCompleted++;
//The difficulty rating must be recalculated
CurrentQuestion.CalculatedDifficulty = cd.CalcDifficulty(CurrentQuestion.XAnswered, CurrentQuestion.XAnsweredCorrectly);
CurrentCompletedQuestion.CalculatedDifficulty = cd.CalcDifficulty(CurrentCompletedQuestion.XCompleted, CurrentCompletedQuestion.XCorrect);
//The question is added back to the storedquestion and complted question lists
storedQuestions.Add(CurrentQuestion);
completedQuestion.Add(CurrentCompletedQuestion);
};
//Displays the question answering form
page2.ShowDialog();
}
}
//Question class is initilized
QuestionClass qc = new QuestionClass();
//The method update scored is called in order to refresh the scored that are in the database
qc.UpdateScores(storedQuestions, completedQuestion);
this.Show();
}
