public static async Task <bool> UpdateQuizCascadingAsync(Quiz quiz)
{
bool updateQuizSucceeded = await UpdateQuiz(quiz).ConfigureAwait(true);
if (!updateQuizSucceeded)
{
return(false);
}
foreach (var question in quiz.Questions)
{
//Updates question
bool updateQuestionSucceeded = await QuestionRequest.UpdateQuestion(question).ConfigureAwait(true);
if (!updateQuestionSucceeded)
{
return(false);
}
// updateQuestion() also creates new answers for new questions
if (question.QuestionId != 0)
{
foreach (var answer in question.Answers)
{
//Updates answer
bool updateAnswerSucceeded = await AnswerRequest.UpdateAnswer(answer).ConfigureAwait(true);
if (!updateAnswerSucceeded)
{
return(false);
}
}
}
}
return(true);
}
//returns the quiz with all its questions and answers
public static async Task <Quiz> GetCompleteQuizAsync(Quiz quiz)
{
var questionsTask = await QuestionRequest.GetQuestionListByQuizIdAsync(quiz.QuizId).ConfigureAwait(true);
Question[] questions = questionsTask;
foreach (Question question in questions)
{
var answersTask = await AnswerRequest.GetAnswerListByQuestionId(question.QuestionId).ConfigureAwait(true);
Answer[] answers = answersTask;
foreach (Answer answer in answers)
{
question.Answers.Add(answer);
}
quiz.Questions.Add(question);
}
return(quiz);
}