public async void DeleteQuiz(object sender, Windows.UI.Xaml.RoutedEventArgs e)
{
if (quizParams.Quiz == null)
{
DisplayErrorMessageAsync("Please select a quiz from the list");
return;
}
Quiz quiz = quizParams.Quiz;
var myHashId = HashGenerator.ComputeSha256Hash(IdentityService.GetAccountIdentifier());
if (myHashId != quizParams.Quiz.UserIdHash)
{
DisplayErrorMessageAsync("Error. UserId hash did not match quiz's UserId hash.");
return;
}
bool userConfirmed = await DisplayAreYouSureDialog().ConfigureAwait(true);
if (userConfirmed)
{
if (IdentityService.IsLoggedIn())
{
if (await QuizRequest.DeleteQuizAsync(quiz).ConfigureAwait(true))
{
NavigationService.Navigate(typeof(MainPage));
}
else
{
DisplayErrorMessageAsync("There was an error deleting the quiz.");
}
}
}
}
public async void FillQuizList()
{
//TODO: errorhandling no internet
var thisHashId = HashGenerator.ComputeSha256Hash(IdentityService.GetAccountIdentifier());
var quizList = await QuizRequest.GetQuizzesFromIdHashAsync(thisHashId).ConfigureAwait(true);
foreach (Quiz q in quizList)
{
QuizzesObservableCollection.Add(q);
}
}
public async void AddQuiz()
{
var myHashId = HashGenerator.ComputeSha256Hash(IdentityService.GetAccountIdentifier());
if (myHashId != quiz.UserIdHash)
{
DisplayErrorMessageAsync("Error. UserId hash did not match quiz's UserId hash.");
return;
}
if (QuizIsValid(quiz))
{
bool userConfirmed = await DisplayAreYouSureDialog().ConfigureAwait(true);
if (userConfirmed)
{
quiz.QuizName = QuizNameHeader;
//updating quiz and question's ICollections and deleting their ILists.
quiz.Questions.Clear();
foreach (Question q in quiz.QuestionList)
{
quiz.Questions.Add(q);
}
quiz.QuestionList.Clear();
foreach (var question in quiz.Questions)
{
question.Answers.Clear();
foreach (var answer in question.AnswersList)
{
question.Answers.Add(answer);
}
question.AnswersList.Clear();
}
if (IdentityService.IsLoggedIn())
{
if (await QuizRequest.UpdateQuizCascadingAsync(quiz).ConfigureAwait(true))
{
NavigationService.Navigate(typeof(MainPage));
}
else
{
DisplayErrorMessageAsync("There was an error updating the quiz.");
}
}
}
}
}
public async void AddQuiz()
{
if (QuizIsValid(quiz))
{
bool userConfirmed = await DisplayAreYouSureDialog().ConfigureAwait(true);
if (userConfirmed)
{
//updating quiz and question's ICollections and deleting their ILists.
quiz.Questions.Clear();
foreach (Question q in quiz.QuestionList)
{
quiz.Questions.Add(q);
}
quiz.QuestionList = null;
foreach (var q in quiz.Questions)
{
q.Answers.Clear();
foreach (var answer in q.AnswersList)
{
q.Answers.Add(answer);
}
q.AnswersList = null;
}
if (IdentityService.IsLoggedIn())
{
quiz.UserIdHash = HashGenerator.ComputeSha256Hash(IdentityService.GetAccountIdentifier());
}
if (await QuizRequest.AddQuizToDbAsync(quiz).ConfigureAwait(true))
{
Quizzes.Add(quiz);
NavigationService.Navigate(typeof(MainPage));
}
else
{
DisplayErrorMessageAsync("There was an unknown error adding your quiz to the database.");
}
}
}
}
