package weconnect

import (
	"fmt"
	"net/http"
	"strings"

	"github.com/evcc-io/evcc/util"
	"github.com/evcc-io/evcc/util/request"
	"golang.org/x/oauth2"
)

// https://identity-userinfo.vwgroup.io/oidc/userinfo
// https://customer-profile.apps.emea.vwapps.io/v1/customers/<userId>/realCarData

// BaseURL is the API base url
const BaseURL = "https://emea.bff.cariad.digital/vehicle/v1"

// API is an api.Vehicle implementation for VW ID cars
type API struct {
	*request.Helper
}

// Actions and action values
const (
	ActionCharge         = "charging"
	ActionChargeStart    = "start"
	ActionChargeStop     = "stop"
	ActionChargeSettings = "settings" // body: targetSOC_pct

	ActionClimatisation      = "climatisation"
	ActionClimatisationStart = "start"
	ActionClimatisationStop  = "stop"
)

// NewAPI creates a new vehicle
func NewAPI(log *util.Logger, ts oauth2.TokenSource) *API {
	v := &API{
		Helper: request.NewHelper(log),
	}

	v.Client.Transport = &oauth2.Transport{
		Source: ts,
		Base:   v.Client.Transport,
	}

	return v
}

// Vehicles implements the /vehicles response
func (v *API) Vehicles() ([]Vehicle, error) {
	var res Vehicles

	uri := fmt.Sprintf("%s/vehicles", BaseURL)
	req, err := request.New(http.MethodGet, uri, nil, request.AcceptJSON)

	if err == nil {
		err = v.DoJSON(req, &res)
	}

	return res.Data, err
}

// Status implements the /status response.
// It is callers responsibility to check for embedded (partial) errors.
func (v *API) Status(vin string) (res Status, err error) {
	uri := fmt.Sprintf("%s/vehicles/%s/selectivestatus?jobs=charging,fuelStatus,climatisation,measurements", BaseURL, vin)

	req, err := request.New(http.MethodGet, uri, nil, request.AcceptJSON)

	if err == nil {
		err = v.DoJSON(req, &res)
	}

	return res, err
}

// ParkingPosition implements the /parkingposition response
func (v *API) ParkingPosition(vin string) (ParkingPosition, error) {
	var res ParkingPosition
	uri := fmt.Sprintf("%s/vehicles/%s/parkingposition", BaseURL, vin)

	req, err := request.New(http.MethodGet, uri, nil, request.AcceptJSON)
	if err == nil {
		err = v.DoJSON(req, &res)
	}

	return res, err
}

// Action implements vehicle actions
func (v *API) Action(vin, action, value string) error {
	uri := fmt.Sprintf("%s/vehicles/%s/%s/%s", BaseURL, vin, action, value)

	req, err := request.New(http.MethodPost, uri, nil, request.AcceptJSON)

	if err == nil {
		var res any
		err = v.DoJSON(req, &res)
	}

	return err
}

// Any implements any api response
func (v *API) Any(uri, vin string) (any, error) {
	if strings.Contains(uri, "%s") {
		uri = fmt.Sprintf(uri, vin)
	}

	req, err := request.New(http.MethodGet, uri, nil, request.AcceptJSON)

	var res any
	if err == nil {
		err = v.DoJSON(req, &res)
	}

	return res, err
}