private GenericOperationResult <QuizForStudentResult> PredfinedQuiz(int quizId, User student)
{
var result = OperationResult.GetGenericResultObject <QuizForStudentResult>();
try
{
var quiz = _quizRepository.GetItem(quizId);
if (quiz == null)
{
result.AddMessage(_messagesService.GetErrorMessage(ErrorMessageKeys.EntityNotFound));
return(result);
}
else
{
var data = new QuizForStudentResult();
data.Student = student;
data.Quiz = quiz;
result.SetData(data);
result.SetSuccess();
return(result);
}
}
catch (Exception e)
{
result.SetException();
result.AddExceptionMessage(e.Message);
return(result);
}
}
private GenericOperationResult <QuizForStudentResult> GenerateRandomQuiz(User student)
{
var result = OperationResult.GetGenericResultObject <QuizForStudentResult>();
try
{
var newRandomQuiz = new Quiz();
newRandomQuiz.Name = "Случаен Квиз";
newRandomQuiz.IsRandom = true;
newRandomQuiz.TypeId = 1;
newRandomQuiz.TeacherId = 1;
var allQuestions = _questionRepository.GetAllItems();
var allQuizes = _quizRepository.GetAllItems();
var allRandomQuizes = allQuizes.Where(x => x.IsRandom == true).ToList();
int nameNumber = 1;
if (allRandomQuizes.Count() > 0)
{
var randomQuizesName = allRandomQuizes.Select(x => x.Name);
var randomQuizNameNumbers = randomQuizesName.Select(x => Int32.Parse(x.Split(' ')[2]));
var maxNumber = randomQuizNameNumbers.Max();
nameNumber = maxNumber + 1;
}
newRandomQuiz.Name += " " + nameNumber.ToString();
// pick 5 random questions.
var randomQuestions = PickRandomQuestions(allQuestions, 5);
//add the random picked questions
foreach (var randomQuestion in randomQuestions)
{
newRandomQuiz.Questions.Add(randomQuestion);
}
_quizRepository.CreateItem(newRandomQuiz);
var quizForStudent = new QuizForStudentResult();
quizForStudent.Quiz = newRandomQuiz;
quizForStudent.Student = student;
result.SetSuccess();
result.SetData(quizForStudent);
}
catch (Exception ex)
{
result.SetException();
result.AddMessage(ex.Message);
result.AddExceptionMessage(ex.Message);
return(result);
}
return(result);
}
