public async Task <IActionResult> CreateQuiz([FromBody][Bind("Topic", "Category", "Description", "ImagePath", "Questions")] Quiz quiz)
{
if (quiz.Id != 0)
{
return(BadRequest("Invalid ID"));
}
quiz.Category = QuizUtil.CategoryFromIndex(int.TryParse(quiz.Category, out var i) ? i : (int?)null);
if (quiz.Category == null)
{
return(BadRequest("Invalid category!"));
}
if (!QuizUtil.QuestionsValid(quiz.Questions))
{
return(BadRequest("Invalid question format!"));
}
if (!ModelState.IsValid)
{
return(BadRequest("Invalid quiz format!"));
}
quiz.OwnerUsername = _um.GetUserName(User);
_db.Add(quiz);
await _db.SaveChangesAsync();
var user = await _um.GetUserAsync(User);
user.MyQuizzes.Add(quiz);
await _um.UpdateAsync(user);
return(Ok());
}
public async Task <IActionResult> UpdateQuiz([FromBody][Bind("Topic", "Category", "Description", "ImagePath", "Questions")] Quiz quizForm)
{
if (!ModelState.IsValid)
{
return(BadRequest("Model state not valid!"));
}
var quiz = await _db.Quizzes
.Where(q => q.Id == quizForm.Id)
.Include(q => q.Questions)
.FirstOrDefaultAsync();
if (quiz == null)
{
return(BadRequest("Quiz not found!"));
}
if (quiz.OwnerId != _um.GetUserId(User))
{
return(BadRequest("You are not the owner of this quiz!"));
}
if (!QuizUtil.QuestionsValid(quiz.Questions))
{
return(BadRequest("Question format not valid!"));
}
if (await _db.QuizzesTaken.AnyAsync(q => q.Quiz == quiz))
{
return(BadRequest("You cannot edit this quiz because someone has already taken it. You can however delete it, and create a new."));
}
try
{
if (quizForm.Category != quiz.Category)
{
quiz.Category = QuizUtil.CategoryFromIndex(int.TryParse(quiz.Category, out var i) ? i : (int?)null);
if (quiz.Category == null)
{
return(BadRequest("Invalid category!"));
}
}
quiz.Topic = quizForm.Topic;
quiz.Description = quizForm.Description;
quiz.ImagePath = quizForm.ImagePath;
_db.Questions.RemoveRange(quiz.Questions);
quiz.Questions = quizForm.Questions;
await _db.SaveChangesAsync();
} catch (DbUpdateConcurrencyException) {
return(BadRequest("Woopsie! Database error! :("));
}
return(Ok());
}