package vehicle

import (
	"time"

	"github.com/evcc-io/evcc/api"
	"github.com/evcc-io/evcc/util"
	"github.com/evcc-io/evcc/util/request"
	"github.com/evcc-io/evcc/vehicle/vag/loginapps"
	"github.com/evcc-io/evcc/vehicle/vag/vwidentity"
	"github.com/evcc-io/evcc/vehicle/vw/weconnect"
)

// https://github.com/TA2k/ioBroker.vw-connect

// VW is an api.Vehicle implementation for ID cars
type VW struct {
	*embed
	*weconnect.Provider // provides the api implementations
}

func init() {
	registry.Add("vw", NewVWFromConfig)
}

// NewVWFromConfig creates a new vehicle
func NewVWFromConfig(other map[string]any) (api.Vehicle, error) {
	cc := struct {
		embed               `mapstructure:",squash"`
		User, Password, VIN string
		Cache               time.Duration
		Timeout             time.Duration
	}{
		Cache:   interval,
		Timeout: request.Timeout,
	}

	if err := util.DecodeOther(other, &cc); err != nil {
		return nil, err
	}

	if cc.User == "" || cc.Password == "" {
		return nil, api.ErrMissingCredentials
	}

	v := &VW{
		embed: &cc.embed,
	}

	log := util.NewLogger("vw").Redact(cc.User, cc.Password, cc.VIN)

	q, err := vwidentity.LoginWithAuthURL(log, weconnect.LoginURL, weconnect.AuthParams, cc.User, cc.Password)
	if err != nil {
		return nil, err
	}

	apps := loginapps.New(log)
	token, err := apps.Exchange(q)
	if err != nil {
		return nil, err
	}

	api := weconnect.NewAPI(log, apps.TokenSource(token))
	api.Client.Timeout = cc.Timeout

	vehicle, err := ensureVehicleEx(
		cc.VIN, api.Vehicles,
		func(v weconnect.Vehicle) (string, error) {
			return v.VIN, nil
		},
	)

	if err == nil {
		v.fromVehicle(vehicle.Nickname, 0)
		v.Provider = weconnect.NewProvider(api, vehicle.VIN, cc.Cache)
	}

	return v, err
}