package bus

type BusStop struct {
    RouteId string
    Direction string
    StationSeq int
    StationId string
    Latitude float64
    Longtitude float64

    Name *map[string] string
    RouteStops *map[int] *BusStop
}

func ( busStop BusStop ) PrevStop() *BusStop {
    if v, hasKey := (*busStop.RouteStops)[ busStop.StationSeq - 1 ]; hasKey {
        return v
    }
    return nil
}

func ( busStop BusStop ) NextStop() *BusStop {
    if v, hasKey := (*busStop.RouteStops)[ busStop.StationSeq + 1 ]; hasKey {
        return v
    }
    return nil
}

type ByRouteId []BusStop

func (a ByRouteId) Len() int           { return len(a) }
func (a ByRouteId) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
func (a ByRouteId) Less(i, j int) bool { return a[i].RouteId < a[j].RouteId }