public ActionResult <int> GetTripCount()
        {
            TripHistory th = TripHistory.GetInstance();

            return(th.GetTripCount());
        }
 public ActionResult <bool> AddTrip(string location, string date, string feeling)
 {
     return(TripHistory.GetInstance().AddTrip(location, date, feeling));
 }
        public ActionResult <IEnumerable <Trip> > GetTripList()
        {
            TripHistory th = TripHistory.GetInstance();

            return(th.GetTripList());
        }