public static GivenQuestionDTO ConvertFromEntity(GivenQuestion entity)
{
var model = new GivenQuestionDTO
{
Id = entity.Id,
TestResultId = entity.TestResultId,
QuestionId = entity.QuestionId,
Question = new QuestionDTO
{
Id = entity.Question.Id,
ImageLink = entity.Question.ImageLink,
Text = entity.Question.Text,
TestId = entity.Question.TestId,
Weight = entity.Question.Weight
},
};
model.Question.Answers = new List <AnswerDTO>();
foreach (var answer in entity.Question.Answers)
{
model.Question.Answers.Add(new AnswerDTO
{
Id = answer.Id,
ImageLink = answer.ImageLink,
QuestionId = answer.QuestionId,
IsCorrect = answer.IsCorrect,
Text = answer.Text
});
}
model.Answers = new List <GivenAnswerDTO>();
if (entity.Answers != null)
{
foreach (var answer in entity.Answers)
{
model.Answers.Add(new GivenAnswerDTO
{
Id = answer.Id,
AnswerId = answer.AnswerId,
QuestionId = answer.QuestionId
});
}
}
return(model);
}
private double GetGradeForQuestion(GivenQuestion question, bool toCalculatePartial, int resultGrade, int countOfQuestions)
{
var countOfAnswers = question.Question.Answers.Count;
var countOfRightAnswers = 0;
var countOfWrongAnswers = 0;
var countOfAnswersOfUser = question.Answers.Count;
var countOfRightAnswersTarget = question.Question.Answers.Where(x => x.IsCorrect).Count();
double questionWeight = question.Question.Weight != 0 ?
question.Question.Weight :
(double)resultGrade / (double)countOfQuestions;
foreach (var answer in question.Answers)
{
var answerId = answer.AnswerId;
bool isCorrect = question.Question.Answers.FirstOrDefault(x => x.Id == answerId).IsCorrect;
if (isCorrect)
{
countOfRightAnswers++;
}
else
{
countOfWrongAnswers++;
}
}
if (!toCalculatePartial)
{
if (countOfRightAnswers == countOfRightAnswersTarget && countOfWrongAnswers == 0)
{
return(questionWeight);
}
else
{
return(0);
}
}
else
{
return(((double)countOfRightAnswers / (double)countOfAnswersOfUser) * questionWeight);
}
}
private double GetWeightOfQuestion(Test test, GivenQuestion question)
{
return(question.Question.Weight != 0 ? question.Question.Weight : (double)test.Grade / test.Questions.Count);
}
