package api

import (
	"encoding/json"
	"errors"

	"git.nemunai.re/filicop/server/models"
)

func init() {
	router.GET("/vehicles/:vid/locations/", apiHandler(vehicleHandler(func (vehicle filicop.Vehicle, _ []byte) (interface{}, error) {
		return vehicle.GetLocations()
	})))
	router.POST("/vehicles/:vid/locations/", apiHandler(vehicleHandler(addVehicleLocation)))
	router.DELETE("/vehicles/:vid/locations/", apiHandler(vehicleHandler(func (vehicle filicop.Vehicle, _ []byte) (interface{}, error) {
		return vehicle.ClearVehicleLocations()
	})))

	router.GET("/fleet/:fid/vehicles/:vid/locations/", apiHandler(vehicleInFleetHandler(func (vehicle filicop.Vehicle, _ []byte) (interface{}, error) {
		return vehicle.GetLocations()
	})))
	router.POST("/fleet/:fid/vehicles/:vid/locations/", apiHandler(vehicleInFleetHandler(addVehicleLocation)))
	router.DELETE("/fleet/:fid/vehicles/:vid/locations/", apiHandler(vehicleInFleetHandler(func (vehicle filicop.Vehicle, _ []byte) (interface{}, error) {
		return vehicle.ClearVehicleLocations()
	})))
}

func parseVehicleLocationJSON(body []byte, next func (filicop.Point) (filicop.VehicleLocation, error)) (filicop.VehicleLocation, error) {
	var up filicop.Point
	if err := json.Unmarshal(body, &up); err != nil {
		return filicop.VehicleLocation{}, err
	}

	if up.X == 0 || up.Y == 0 {
		return filicop.VehicleLocation{}, errors.New("Vehicle's coordinates are invalid")
	}

	return next(up)
}

func addVehicleLocation(vehicle filicop.Vehicle, body []byte) (interface{}, error) {
	return parseVehicleLocationJSON(body, vehicle.NewLocation)
}