Given a stop_id and time in seconds since midnight return the next
    trips to visit the stop.

def handle_json_GET_stoptrips(self, params):
    """Given a stop_id and time in seconds since midnight return the next
    trips to visit the stop."""
    schedule = self.server.schedule
    stop = schedule.GetStop(params.get('stop', None))
    time = int(params.get('time', 0))
    date = params.get('date', "")

    time_trips = stop.GetStopTimeTrips(schedule)
    time_trips.sort()  # OPT: use bisect.insort to make this O(N*ln(N)) -> O(N)
    # Keep the first 5 after param 'time'.
    # Need make a tuple to find correct bisect point
    time_trips = time_trips[bisect.bisect_left(time_trips, (time, 0)):]
    time_trips = time_trips[:5]
    # TODO: combine times for a route to show next 2 departure times
    result = []
    for time, (trip, index), tp in time_trips:
      service_id = trip.service_id
      service_period = schedule.GetServicePeriod(service_id)
      if date and not service_period.IsActiveOn(date):
        continue
      headsign = None
      # Find the most recent headsign from the StopTime objects
      for stoptime in trip.GetStopTimes()[index::-1]:
        if stoptime.stop_headsign:
          headsign = stoptime.stop_headsign
          break
      # If stop_headsign isn't found, look for a trip_headsign
      if not headsign:
        headsign = trip.trip_headsign
      route = schedule.GetRoute(trip.route_id)
      trip_name = ''
      if route.route_short_name:
        trip_name += route.route_short_name
      if route.route_long_name:
        if len(trip_name):
          trip_name += " - "
        trip_name += route.route_long_name
      if headsign:
        trip_name += " (Direction: %s)" % headsign

      result.append((time, (trip.trip_id, trip_name, trip.service_id), tp))
    return result