public async Task <IDictionary <QuizAccessEnum, IList <BasicUser> > > GetQuizUsersAsync(Guid quizId, string userId)
{
var access = await _quizzesRepository.HaveWriteAccessToQuiz(userId, quizId);
if (!access)
{
return(null);
}
var quiz = await _quizzesRepository
.GetAll()
.Where(q => q.Id == quizId)
.Include(q => q.Accesses)
.SingleOrDefaultAsync();
return(quiz?.Accesses
.Where(a => a.Access != QuizAccessEnum.None)
.GroupBy(a => a.Access)
.Select(async a => new KeyValuePair <QuizAccessEnum, IList <BasicUser> >(
a.Key,
(await _auth0UsersService.GetBasicUsersListByIds(a.Select(ac => ac.UserId).ToList())).ToList()
))
.Select(a => a.Result)
.ToDictionary(a => a.Key, a => a.Value));
}
private async Task <object> GetQuizStatistics(Guid quizId)
{
var quiz = await _quizzesRepository
.GetAll()
.Where(q => q.Id == quizId)
.Include(q => q.Sessions)
.SingleOrDefaultAsync();
return(new {
Quiz = quiz,
NumberOfLearnSessions = quiz.Sessions.NumberOfLearnSessions,
NumberOfSolveSessions = quiz.Sessions.NumberOfSolveSessions,
SolvingStatistics = await GetSolvingStatistics(quizId),
LearningStatistics = await GetLearningStatistics(quizId)
});
}