private void UserEnter(User user, Room room, bool enter)
{
// 입장 기록 저장
EnterHistory enterHistory = new EnterHistory {
User = user, Room = room, enter = enter, created_at = DateTime.Now
};
db.EnterHistory.Add(enterHistory);
// 입장 여부에 따라 user_count 변경
room.user_count += enter ? 1 : -1;
room.user_count = room.user_count <0 ? 0 : room.user_count> room.user_limit ? room.user_limit : room.user_count;
db.Entry(room).State = EntityState.Modified;
db.SaveChanges();
}
public async Task JoinRoom(int user_id, int room_id)
{
Room room = getRoom(room_id);
User user = getUser(user_id);
EnterHistory recent_history = db.EnterHistory
.Where(a => a.user_id == user_id && a.room_id == room_id)
.OrderByDescending(a => a.created_at)
.FirstOrDefault();
await Groups.Add(Context.ConnectionId, room.Id.ToString());
// 나간 기록이 있다면 입장 알림
if (recent_history == null || recent_history.enter == false)
{
UserEnter(user, room, true);
SendGroup(room_id, user_id, user.hello_message);
}
}
