public JoinRoomViewModel GetRoomModel(int chatroomId)
{
var modelList = GetAll();
var model = new JoinRoomViewModel()
{
Chatrooms = modelList
};
if (chatroomId != 0)
{
model.ChatroomId = chatroomId;
}
else
{
model.ChatroomId = GetByName(configuration["DefaultChatSettings:ChatName"]).Id;
}
foreach (var chat in modelList)
{
if (chat.Type == Enums.ChatType.Public && chat.Id == model.ChatroomId)
{
model.PrivateRoomsClass = "hide";
model.ChatType = "private";
break;
}
}
if (string.IsNullOrEmpty(model.PrivateRoomsClass))
{
model.PublicRoomsClass = "hide";
model.ChatType = "public";
}
return(model);
}
public async Task <ScoreExamViewModel> SubmitExam(int JoinRoomId, int ExamId, string json)
{
var query = from jr in _context.Joinroom where jr.Id == JoinRoomId select jr;
var joinRoom = query.First();
if (joinRoom == null)
{
return(null);
}
var queryqs = from q in _context.Questions
join qd in _context.Questiondetails on q.Id equals qd.QuestionId
join a in _context.Answers on q.Id equals a.QuestionId
join e in _context.Exams on qd.ExamId equals e.Id
where qd.ExamId == ExamId
orderby q.Id
select new { q, a };
var questions = await queryqs.Select(x => new QuestionAndAnswer()
{
Id = x.q.Id,
QuestionType = x.q.QuestionType,
CorrectAnswers = x.a.CorrectAnswers
}).ToListAsync();
var data = JsonSerializer.Deserialize <Dictionary <string, string> >(json);
int i = 0;
int score = 0;
bool flag = true;
foreach (var kv in data)
{
if (questions[i].Id == int.Parse(kv.Key))
{
if (questions[i].CorrectAnswers.Length == 1)
{
if (questions[i].CorrectAnswers.Equals(kv.Value))
{
score++;
}
i++;
continue;
}
else
{
var arrquestion = questions[i].CorrectAnswers.Split(",");
var arrchose = kv.Value.Split(",");
i++;
if (arrquestion.Length != arrchose.Length)
{
continue;
}
flag = true;
foreach (var elem in arrchose)
{
if (!arrquestion.Contains(elem))
{
flag = false;
break;
}
}
if (flag)
{
score++;
}
}
}
}
joinRoom.Score = score;
joinRoom.TimeSubmitExam = DateTime.Now;
_context.SaveChanges();
JoinRoomViewModel joinRoomViewModel = new JoinRoomViewModel()
{
Id = joinRoom.Id,
RoomId = joinRoom.RoomId,
Score = score,
Email = joinRoom.Email,
FullName = joinRoom.FullName,
Mssv = joinRoom.Mssv,
UserId = joinRoom.UserId,
TimeSubmitExam = DateTime.Now
};
ScoreExamViewModel s = new ScoreExamViewModel()
{
Answers = questions,
Joinroom = joinRoomViewModel,
Score = score,
};
return(s);
}
public JoinRoomPage()
{
InitializeComponent();
this.BindingContext = this.viewModel = new JoinRoomViewModel();
}