public async Task StartQuiz(QuizServiceModel model, string username)
{
var user = await this.context.Users.FirstOrDefaultAsync(u => u.UserName == username);
var quiz = await this.context.Quizzes.Include(q => q.QuizQuestions).FirstOrDefaultAsync(q => q.Id == model.Id);
if (user == null || quiz == null)
{
return;
}
var results = new UserResult();
results.UserId = user.Id;
results.User = user;
results.QuizId = quiz.Id;
results.Quiz = quiz;
model.Result = results;
for (int i = 0; i < quiz.QuizQuestions.Count; i++)
{
for (int a = 0; a < model.Answers.Count; a++)
{
if (quiz.QuizQuestions[i].Id == model.Answers[a].QuestionId)
{
if (model.Answers[a].Answer == quiz.QuizQuestions[i].CorrectAnswer)
{
model.Result.UsersCorrectAnswers++;
}
else
{
model.Result.UsersWrongAnswers++;
}
}
i++;
}
}
model.Result.PointsEarned = model.Result.UsersCorrectAnswers;
user.TotalQuizPoints += model.Result.PointsEarned;
await this.context.UserResults.AddAsync(model.Result);
//if user meets the requirements of any achievement he`ll get the achievement after finishes the quiz
await this.achievementService.GetRookieAchievement(user);
await this.achievementService.GetHundrederAchievement(user);
await this.achievementService.GetExcellentAchievement(user);
await this.achievementService.GetMasterAchievement(user);
await this.context.SaveChangesAsync();
await this.notificationService.CreateQuizNotification(quiz, user, model);
}
public async Task CreateQuizNotification(Quiz quiz, QuizaldoUser user, QuizServiceModel model)
{
var notification = new Notification();
notification.Text = $"{user.UserName} has completed {quiz.Name} quiz with " +
$"{model.Result.UsersCorrectAnswers} correct and " +
$"{model.Result.UsersWrongAnswers} wrong answers.";
notification.CreatedOn = DateTime.Now;
notification.UserId = user.Id;
notification.User = user;
await this.context.Notifications.AddAsync(notification);
await this.context.SaveChangesAsync();
}
