public TestsViewModel(PageService pageService, UserService userService, TestsRestClient testsClient, StudentsRestClient studentsClient, QuestionsRestClient questionsRestClient, StudentAnswersRestClient studentAnswersClient)
{
_pageService = pageService;
_userService = userService;
_testsClient = testsClient;
_studentsClient = studentsClient;
_questionsClient = questionsRestClient;
_studentAnswersClient = studentAnswersClient;
Tests.Clear();
Tests = new ObservableCollection <dynamic>(HttpResponseMessageConverter.GetResult <List <dynamic> >(_testsClient.GetTests()));
}
public AddOrEditQuestionViewModel(PageService pageService, QuestionsRestClient questionsClient)
{
_pageService = pageService;
_questionsClient = questionsClient;
if (!IsAdding)
{
if (QuestionId != null)
{
var question = HttpResponseMessageConverter.GetResult <dynamic>(_questionsClient.GetQuestionById((int)QuestionId));
Name = question.name;
Photo = Convert.FromBase64String(Convert.ToString(question.photo));
}
}
}
public int GetCountCorrectedAnswers()
{
var userId = Convert.ToInt32(_userService.UserInformation.id);
var studentId = Convert.ToInt32(HttpResponseMessageConverter.GetResult <dynamic>(_studentsClient.StudentByUserId(userId)).id);
var studentAnswers = HttpResponseMessageConverter.GetResult <List <dynamic> >(_studentAnswersClient.GetStudentAnswers(studentId, Convert.ToInt32(TestId)));
var countCorrectedAnswers = 0;
foreach (var studentAnswer in studentAnswers)
{
if (Convert.ToBoolean(studentAnswer.answer.isCorrect))
{
countCorrectedAnswers += 1;
}
}
return(countCorrectedAnswers);
}
public AddOrEditAnswerViewModel(PageService pageService, AnswersRestClient answersClient)
{
_pageService = pageService;
_answersClient = answersClient;
if (!IsAdding)
{
if (AnswerId != null)
{
var answer = HttpResponseMessageConverter.GetResult <dynamic>(_answersClient.GetAnswerById((int)AnswerId));
IsСorrect = (bool?)answer.isCorrect;
Name = answer.name;
}
}
}
public void FormQuestions()
{
var random = new Random();
var questions = new ObservableCollection <dynamic>(HttpResponseMessageConverter.GetResult <List <dynamic> >(_questionsClient.GetQuestionsByTestId((int)TestId)));
FormCounters(questions.Count);
for (int i = 0; i < CountQuestions; i++)
{
while (true)
{
var item = questions[random.Next(0, questions.Count)];
if (!Questions.Contains(item))
{
Questions.Add(item);
break;
}
}
}
}
public PassingTheTestViewModel(PageService pageService, UserService userService, TestsRestClient testsClient, AnswersRestClient answersClient, StudentsRestClient studentsClient, QuestionsRestClient questionsClient, StudentAnswersRestClient studentAnswersClient)
{
_pageService = pageService;
_userService = userService;
_testsClient = testsClient;
_answersClient = answersClient;
_studentsClient = studentsClient;
_questionsClient = questionsClient;
_studentAnswersClient = studentAnswersClient;
if (TestId != null)
{
Test = HttpResponseMessageConverter.GetResult <dynamic>(_testsClient.GetTestById((int)TestId));
InitTimer();
FormQuestions();
ActiveQuestion = Questions[0];
Answers.Clear();
Answers = new ObservableCollection <dynamic>(HttpResponseMessageConverter.GetResult <List <dynamic> >(_answersClient.GetAnswersByQuestionId(Convert.ToInt32(ActiveQuestion.id))));
}
}
public DetailsOfTheStudentPassingTheTestViewModel(PageService pageService, DetailsOfTheTestRestClient detailsOfTheClient)
{
_pageService = pageService;
_detailsOfTheClient = detailsOfTheClient;
if (StudentId != null)
{
DetailsOfTheStudentPassingTheTest.Clear();
DetailsOfTheStudentPassingTheTest = new ObservableCollection <dynamic>(HttpResponseMessageConverter.GetResult <List <dynamic> >(_detailsOfTheClient.GetDetailsOfTheStudentPassingTheTest(Convert.ToInt32(TestId), Convert.ToInt32(StudentId))));
}
}
