package cmd

import (
	"cmp"
	"context"
	"errors"
	"fmt"
	"net"
	"net/http"
	"os"
	"regexp"
	"slices"
	"strconv"
	"strings"
	"sync"
	"time"

	paho "github.com/eclipse/paho.mqtt.golang"
	"github.com/evcc-io/evcc/api"
	"github.com/evcc-io/evcc/charger"
	"github.com/evcc-io/evcc/charger/eebus"
	"github.com/evcc-io/evcc/cmd/shutdown"
	"github.com/evcc-io/evcc/core"
	"github.com/evcc-io/evcc/core/site"
	"github.com/evcc-io/evcc/hems"
	"github.com/evcc-io/evcc/meter"
	"github.com/evcc-io/evcc/provider/golang"
	"github.com/evcc-io/evcc/provider/javascript"
	"github.com/evcc-io/evcc/provider/mqtt"
	"github.com/evcc-io/evcc/push"
	"github.com/evcc-io/evcc/server"
	"github.com/evcc-io/evcc/server/db"
	"github.com/evcc-io/evcc/server/db/settings"
	"github.com/evcc-io/evcc/server/oauth2redirect"
	"github.com/evcc-io/evcc/tariff"
	"github.com/evcc-io/evcc/util"
	"github.com/evcc-io/evcc/util/config"
	"github.com/evcc-io/evcc/util/locale"
	"github.com/evcc-io/evcc/util/machine"
	"github.com/evcc-io/evcc/util/modbus"
	"github.com/evcc-io/evcc/util/pipe"
	"github.com/evcc-io/evcc/util/request"
	"github.com/evcc-io/evcc/util/sponsor"
	"github.com/evcc-io/evcc/util/templates"
	"github.com/evcc-io/evcc/vehicle"
	"github.com/gorilla/handlers"
	"github.com/gorilla/mux"
	"github.com/libp2p/zeroconf/v2"
	"github.com/spf13/cast"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	"golang.org/x/sync/errgroup"
	"golang.org/x/text/currency"
)

var conf = globalConfig{
	Interval: 10 * time.Second,
	Log:      "info",
	Network: networkConfig{
		Schema: "http",
		Host:   "evcc.local",
		Port:   7070,
	},
	Mqtt: mqttConfig{
		Topic: "evcc",
	},
	Database: dbConfig{
		Type: "sqlite",
		Dsn:  "~/.evcc/evcc.db",
	},
}

var nameRE = regexp.MustCompile(`^[a-zA-Z0-9_.:-]+$`)

type globalConfig struct {
	Network      networkConfig
	Log          string
	SponsorToken string
	Plant        string // telemetry plant id
	Telemetry    bool
	Metrics      bool
	Profile      bool
	Levels       map[string]string
	Interval     time.Duration
	Database     dbConfig
	Mqtt         mqttConfig
	ModbusProxy  []proxyConfig
	Javascript   []javascriptConfig
	Go           []goConfig
	Influx       server.InfluxConfig
	EEBus        map[string]interface{}
	HEMS         config.Typed
	Messaging    messagingConfig
	Meters       []config.Named
	Chargers     []config.Named
	Vehicles     []config.Named
	Tariffs      tariffConfig
	Site         map[string]interface{}
	Loadpoints   []map[string]interface{}
	Circuits     []config.Named
}

type mqttConfig struct {
	mqtt.Config `mapstructure:",squash"`
	Topic       string
}

type javascriptConfig struct {
	VM     string
	Script string
}

type goConfig struct {
	VM     string
	Script string
}

type proxyConfig struct {
	Port            int
	ReadOnly        string
	modbus.Settings `mapstructure:",squash"`
}

type dbConfig struct {
	Type string
	Dsn  string
}

type messagingConfig struct {
	Events   map[string]push.EventTemplateConfig
	Services []config.Typed
}

type tariffConfig struct {
	Currency string
	Grid     config.Typed
	FeedIn   config.Typed
	Co2      config.Typed
	Planner  config.Typed
}

type networkConfig struct {
	Schema string
	Host   string
	Port   int
}

func (c networkConfig) HostPort() string {
	if c.Schema == "http" && c.Port == 80 || c.Schema == "https" && c.Port == 443 {
		return c.Host
	}
	return net.JoinHostPort(c.Host, strconv.Itoa(c.Port))
}

func (c networkConfig) URI() string {
	return fmt.Sprintf("%s://%s", c.Schema, c.HostPort())
}

func nameValid(name string) error {
	if !nameRE.MatchString(name) {
		return fmt.Errorf("name must not contain special characters or spaces: %s", name)
	}
	return nil
}

func tokenDanger(conf []config.Named) bool {
	problematic := []string{"tesla", "psa", "opel", "citroen", "ds", "peugeot"}

	for _, cc := range conf {
		if slices.Contains(problematic, cc.Type) {
			return true
		}
		template, ok := cc.Other["template"].(string)
		if ok && cc.Type == "template" && slices.Contains(problematic, template) {
			return true
		}
	}

	return false
}

func loadConfigFile(conf *globalConfig, checkDB bool) error {
	err := viper.ReadInConfig()

	if cfgFile = viper.ConfigFileUsed(); cfgFile == "" {
		return err
	}

	log.INFO.Println("using config file:", cfgFile)

	if err == nil {
		if err = viper.UnmarshalExact(conf); err != nil {
			err = fmt.Errorf("failed parsing config file: %w", err)
		}
	}

	// check service database
	if _, err := os.Stat(serviceDB); err == nil && checkDB && conf.Database.Dsn != serviceDB && tokenDanger(conf.Vehicles) {
		log.FATAL.Fatal(`

Found systemd service database at "` + serviceDB + `", evcc has been invoked with database "` + conf.Database.Dsn + `".
Running evcc with vehicles configured in evcc.yaml may lead to expiring the yaml configuration's vehicle tokens.
This is due to the fact, that the token refresh will be saved to the local instead of the service's database.
If you have vehicles with touchy tokens like PSA or Tesla, make sure to remove vehicle configuration from the yaml file.

If you know what you're doing, you can run evcc ignoring the service database with the --ignore-db flag.
`)
	}

	// parse log levels after reading config
	if err == nil {
		parseLogLevels()
	}

	return err
}

func configureCircuits(static []config.Named, names ...string) error {
	children := slices.Clone(static)

	// TODO: check for circular references
NEXT:
	for i, cc := range children {
		if cc.Name == "" {
			return fmt.Errorf("cannot create circuit: missing name")
		}

		if err := nameValid(cc.Name); err != nil {
			return fmt.Errorf("cannot create circuit: duplicate name: %s", cc.Name)
		}

		if parent := cast.ToString(cc.Property("parent")); parent != "" {
			if _, err := config.Circuits().ByName(parent); err != nil {
				continue
			}
		}

		log := util.NewLogger("circuit-" + cc.Name)
		instance, err := core.NewCircuitFromConfig(log, cc.Other)
		if err != nil {
			return fmt.Errorf("cannot create circuit '%s': %w", cc.Name, err)
		}

		// ensure config has title
		if instance.GetTitle() == "" {
			//lint:ignore SA1019 as Title is safe on ascii
			instance.SetTitle(strings.Title(cc.Name))
		}

		if err := config.Circuits().Add(config.NewStaticDevice(cc, instance)); err != nil {
			return err
		}

		children = slices.Delete(children, i, i+1)
		goto NEXT
	}

	if len(children) > 0 {
		return fmt.Errorf("circuit is missing parent: %s", children[0].Name)
	}

	// append devices from database
	configurable, err := config.ConfigurationsByClass(templates.Circuit)
	if err != nil {
		return err
	}

	children2 := slices.Clone(configurable)

NEXT2:
	for i, conf := range children2 {
		cc := conf.Named()

		if len(names) > 0 && !slices.Contains(names, cc.Name) {
			return nil
		}

		if parent := cast.ToString(cc.Property("parent")); parent != "" {
			if _, err := config.Circuits().ByName(parent); err != nil {
				continue
			}
		}

		log := util.NewLogger("circuit-" + cc.Name)
		instance, err := core.NewCircuitFromConfig(log, cc.Other)
		if err != nil {
			return fmt.Errorf("cannot create circuit '%s': %w", cc.Name, err)
		}

		// ensure config has title
		if instance.GetTitle() == "" {
			//lint:ignore SA1019 as Title is safe on ascii
			instance.SetTitle(strings.Title(cc.Name))
		}

		if err := config.Circuits().Add(config.NewConfigurableDevice(conf, instance)); err != nil {
			return err
		}

		children2 = slices.Delete(children2, i, i+1)
		goto NEXT2
	}

	if len(children2) > 0 {
		return fmt.Errorf("missing parent circuit: %s", children2[0].Named().Name)
	}

	var rootFound bool
	for _, dev := range config.Circuits().Devices() {
		c := dev.Instance()

		if c.GetParent() == nil {
			if rootFound {
				return errors.New("cannot have multiple root circuits")
			}
			rootFound = true
		}
	}

	if !rootFound && len(config.Circuits().Devices()) > 0 {
		return errors.New("root circuit required")
	}

	return nil
}

func configureMeters(static []config.Named, names ...string) error {
	for i, cc := range static {
		if cc.Name == "" {
			return fmt.Errorf("cannot create meter %d: missing name", i+1)
		}

		if len(names) > 0 && !slices.Contains(names, cc.Name) {
			continue
		}

		if err := nameValid(cc.Name); err != nil {
			log.WARN.Printf("create meter %d: %v", i+1, err)
		}

		instance, err := meter.NewFromConfig(cc.Type, cc.Other)
		if err != nil {
			return fmt.Errorf("cannot create meter '%s': %w", cc.Name, err)
		}

		if err := config.Meters().Add(config.NewStaticDevice(cc, instance)); err != nil {
			return err
		}
	}

	// append devices from database
	configurable, err := config.ConfigurationsByClass(templates.Meter)
	if err != nil {
		return err
	}

	for _, conf := range configurable {
		cc := conf.Named()

		if len(names) > 0 && !slices.Contains(names, cc.Name) {
			return nil
		}

		instance, err := meter.NewFromConfig(cc.Type, cc.Other)
		if err != nil {
			return fmt.Errorf("cannot create meter '%s': %w", cc.Name, err)
		}

		if err := config.Meters().Add(config.NewConfigurableDevice(conf, instance)); err != nil {
			return err
		}
	}

	return nil
}

func configureChargers(static []config.Named, names ...string) error {
	g, _ := errgroup.WithContext(context.Background())

	for i, cc := range static {
		if cc.Name == "" {
			return fmt.Errorf("cannot create charger %d: missing name", i+1)
		}

		if len(names) > 0 && !slices.Contains(names, cc.Name) {
			continue
		}

		if err := nameValid(cc.Name); err != nil {
			log.WARN.Printf("create charger %d: %v", i+1, err)
		}

		g.Go(func() error {
			instance, err := charger.NewFromConfig(cc.Type, cc.Other)
			if err != nil {
				return fmt.Errorf("cannot create charger '%s': %w", cc.Name, err)
			}

			return config.Chargers().Add(config.NewStaticDevice(cc, instance))
		})
	}

	// append devices from database
	configurable, err := config.ConfigurationsByClass(templates.Charger)
	if err != nil {
		return err
	}

	for _, conf := range configurable {
		g.Go(func() error {
			cc := conf.Named()

			if len(names) > 0 && !slices.Contains(names, cc.Name) {
				return nil
			}

			instance, err := charger.NewFromConfig(cc.Type, cc.Other)
			if err != nil {
				return fmt.Errorf("cannot create charger '%s': %w", cc.Name, err)
			}

			return config.Chargers().Add(config.NewConfigurableDevice(conf, instance))
		})
	}

	return g.Wait()
}

func vehicleInstance(cc config.Named) (api.Vehicle, error) {
	instance, err := vehicle.NewFromConfig(cc.Type, cc.Other)
	if err != nil {
		var ce *util.ConfigError
		if errors.As(err, &ce) {
			return nil, err
		}

		// wrap non-config vehicle errors to prevent fatals
		log.ERROR.Printf("creating vehicle %s failed: %v", cc.Name, err)
		instance = vehicle.NewWrapper(cc.Name, cc.Type, cc.Other, err)
	}

	// ensure vehicle config has title
	if instance.Title() == "" {
		//lint:ignore SA1019 as Title is safe on ascii
		instance.SetTitle(strings.Title(cc.Name))
	}

	return instance, nil
}

func configureVehicles(static []config.Named, names ...string) error {
	var mu sync.Mutex
	g, _ := errgroup.WithContext(context.Background())

	// stable-sort vehicles by name
	devs1 := make([]config.Device[api.Vehicle], 0, len(static))

	for i, cc := range static {
		if cc.Name == "" {
			return fmt.Errorf("cannot create vehicle %d: missing name", i+1)
		}

		if len(names) > 0 && !slices.Contains(names, cc.Name) {
			continue
		}

		if err := nameValid(cc.Name); err != nil {
			return fmt.Errorf("cannot create vehicle %d: %w", i+1, err)
		}

		g.Go(func() error {
			instance, err := vehicleInstance(cc)
			if err != nil {
				return fmt.Errorf("cannot create vehicle '%s': %w", cc.Name, err)
			}

			mu.Lock()
			defer mu.Unlock()
			devs1 = append(devs1, config.NewStaticDevice(cc, instance))

			return nil
		})
	}

	// append devices from database
	configurable, err := config.ConfigurationsByClass(templates.Vehicle)
	if err != nil {
		return err
	}

	// stable-sort vehicles by id
	devs2 := make([]config.ConfigurableDevice[api.Vehicle], 0, len(configurable))

	for _, conf := range configurable {
		g.Go(func() error {
			cc := conf.Named()

			if len(names) > 0 && !slices.Contains(names, cc.Name) {
				return nil
			}

			instance, err := vehicleInstance(cc)
			if err != nil {
				return fmt.Errorf("cannot create vehicle '%s': %w", cc.Name, err)
			}

			mu.Lock()
			defer mu.Unlock()
			devs2 = append(devs2, config.NewConfigurableDevice(conf, instance))

			return nil
		})
	}

	if err := g.Wait(); err != nil {
		return err
	}

	slices.SortFunc(devs1, func(i, j config.Device[api.Vehicle]) int {
		return cmp.Compare(strings.ToLower(i.Config().Name), strings.ToLower(j.Config().Name))
	})

	for _, dev := range devs1 {
		if err := config.Vehicles().Add(dev); err != nil {
			return err
		}
	}

	slices.SortFunc(devs2, func(i, j config.ConfigurableDevice[api.Vehicle]) int {
		return cmp.Compare(i.ID(), j.ID())
	})

	for _, dev := range devs2 {
		if err := config.Vehicles().Add(dev); err != nil {
			return err
		}
	}

	return nil
}

func configureEnvironment(cmd *cobra.Command, conf globalConfig) (err error) {
	// full http request log
	if cmd.Flags().Lookup(flagHeaders).Changed {
		request.LogHeaders = true
	}

	// setup machine id
	if conf.Plant != "" {
		err = machine.CustomID(conf.Plant)
	}

	// setup sponsorship (allow env override)
	if err == nil {
		err = sponsor.ConfigureSponsorship(conf.SponsorToken)
	}

	// setup translations
	if err == nil {
		err = locale.Init()
	}

	// setup persistence
	if err == nil && conf.Database.Dsn != "" {
		err = configureDatabase(conf.Database)
	}

	// setup mqtt client listener
	if err == nil && conf.Mqtt.Broker != "" {
		err = configureMQTT(conf.Mqtt)
	}

	// setup javascript VMs
	if err == nil {
		err = configureJavascript(conf.Javascript)
	}

	// setup go VMs
	if err == nil {
		err = configureGo(conf.Go)
	}

	// setup EEBus server
	if err == nil && conf.EEBus != nil {
		err = configureEEBus(conf.EEBus)
	}

	// setup config database
	if err == nil {
		err = config.Init(db.Instance)
	}

	return
}

// configureDatabase configures session database
func configureDatabase(conf dbConfig) error {
	if err := db.NewInstance(conf.Type, conf.Dsn); err != nil {
		return err
	}

	if err := settings.Init(); err != nil {
		return err
	}

	persistSettings := func() {
		if err := settings.Persist(); err != nil {
			log.ERROR.Println("cannot save settings:", err)
		}
	}

	// persist unsaved settings on shutdown
	shutdown.Register(persistSettings)

	// persist unsaved settings every 30 minutes
	go func() {
		for range time.Tick(30 * time.Minute) {
			persistSettings()
		}
	}()

	return nil
}

// configureInflux configures influx database
func configureInflux(conf server.InfluxConfig, site site.API, in <-chan util.Param) {
	influx := server.NewInfluxClient(
		conf.URL,
		conf.Token,
		conf.Org,
		conf.User,
		conf.Password,
		conf.Database,
	)

	// eliminate duplicate values
	dedupe := pipe.NewDeduplicator(30*time.Minute, "vehicleCapacity", "vehicleSoc", "vehicleRange", "vehicleOdometer", "chargedEnergy", "chargeRemainingEnergy")
	in = dedupe.Pipe(in)

	go influx.Run(site, in)
}

// setup mqtt
func configureMQTT(conf mqttConfig) error {
	log := util.NewLogger("mqtt")

	instance, err := mqtt.RegisteredClient(log, conf.Broker, conf.User, conf.Password, conf.ClientID, 1, conf.Insecure, func(options *paho.ClientOptions) {
		topic := fmt.Sprintf("%s/status", strings.Trim(conf.Topic, "/"))
		options.SetWill(topic, "offline", 1, true)

		oc := options.OnConnect
		options.SetOnConnectHandler(func(client paho.Client) {
			oc(client)                                   // original handler
			_ = client.Publish(topic, 1, true, "online") // alive - not logged
		})
	})
	if err != nil {
		return fmt.Errorf("failed configuring mqtt: %w", err)
	}

	mqtt.Instance = instance
	return nil
}

// setup javascript
func configureJavascript(conf []javascriptConfig) error {
	for _, cc := range conf {
		if _, err := javascript.RegisteredVM(cc.VM, cc.Script); err != nil {
			return fmt.Errorf("failed configuring javascript: %w", err)
		}
	}
	return nil
}

// setup go
func configureGo(conf []goConfig) error {
	for _, cc := range conf {
		if _, err := golang.RegisteredVM(cc.VM, cc.Script); err != nil {
			return fmt.Errorf("failed configuring go: %w", err)
		}
	}
	return nil
}

// setup HEMS
func configureHEMS(conf config.Typed, site *core.Site, httpd *server.HTTPd) error {
	hems, err := hems.NewFromConfig(conf.Type, conf.Other, site, httpd)
	if err != nil {
		return fmt.Errorf("failed configuring hems: %w", err)
	}

	go hems.Run()

	return nil
}

// setup MDNS
func configureMDNS(conf networkConfig) error {
	host := strings.TrimSuffix(conf.Host, ".local")

	zc, err := zeroconf.RegisterProxy("evcc", "_http._tcp", "local.", conf.Port, host, nil, []string{"path=/"}, nil)
	if err != nil {
		return fmt.Errorf("mDNS announcement: %w", err)
	}

	shutdown.Register(zc.Shutdown)

	return nil
}

// setup EEBus
func configureEEBus(conf map[string]interface{}) error {
	var err error
	if eebus.Instance, err = eebus.NewServer(conf); err != nil {
		return fmt.Errorf("failed configuring eebus: %w", err)
	}

	eebus.Instance.Run()
	shutdown.Register(eebus.Instance.Shutdown)

	return nil
}

// setup messaging
func configureMessengers(conf messagingConfig, vehicles push.Vehicles, valueChan chan util.Param, cache *util.Cache) (chan push.Event, error) {
	messageChan := make(chan push.Event, 1)

	messageHub, err := push.NewHub(conf.Events, vehicles, cache)
	if err != nil {
		return messageChan, fmt.Errorf("failed configuring push services: %w", err)
	}

	for _, service := range conf.Services {
		impl, err := push.NewFromConfig(service.Type, service.Other)
		if err != nil {
			return messageChan, fmt.Errorf("failed configuring push service %s: %w", service.Type, err)
		}
		messageHub.Add(impl)
	}

	go messageHub.Run(messageChan, valueChan)

	return messageChan, nil
}

func configureTariff(name string, conf config.Typed, t *api.Tariff, wg *sync.WaitGroup) {
	defer wg.Done()

	if conf.Type == "" {
		return
	}

	res, err := tariff.NewFromConfig(conf.Type, conf.Other)
	if err != nil {
		log.ERROR.Printf("failed configuring %s tariff: %v", name, err)
		return
	}

	*t = res
}

func configureTariffs(conf tariffConfig) (*tariff.Tariffs, error) {
	tariffs := tariff.Tariffs{
		Currency: currency.EUR,
	}

	if conf.Currency != "" {
		tariffs.Currency = currency.MustParseISO(conf.Currency)
	}

	var wg sync.WaitGroup
	wg.Add(4)

	go configureTariff("grid", conf.Grid, &tariffs.Grid, &wg)
	go configureTariff("feedin", conf.FeedIn, &tariffs.FeedIn, &wg)
	go configureTariff("co2", conf.Co2, &tariffs.Co2, &wg)
	go configureTariff("planner", conf.Planner, &tariffs.Planner, &wg)

	wg.Wait()

	return &tariffs, nil
}

func configureDevices(conf globalConfig) error {
	if err := configureMeters(conf.Meters); err != nil {
		return err
	}
	if err := configureChargers(conf.Chargers); err != nil {
		return err
	}
	if err := configureCircuits(conf.Circuits); err != nil {
		return err
	}
	return configureVehicles(conf.Vehicles)
}

func configureSiteAndLoadpoints(conf globalConfig) (*core.Site, error) {
	if err := configureDevices(conf); err != nil {
		return nil, err
	}

	loadpoints, err := configureLoadpoints(conf)
	if err != nil {
		return nil, fmt.Errorf("failed configuring loadpoints: %w", err)
	}

	tariffs, err := configureTariffs(conf.Tariffs)
	if err != nil {
		return nil, err
	}

	site, err := configureSite(conf.Site, loadpoints, tariffs)
	if err != nil {
		return nil, err
	}

	if len(config.Circuits().Devices()) > 0 {
		if err := validateCircuits(site, loadpoints); err != nil {
			return nil, err
		}
	}

	return site, nil
}

func validateCircuits(site site.API, loadpoints []*core.Loadpoint) error {
CONTINUE:
	for _, dev := range config.Circuits().Devices() {
		instance := dev.Instance()

		if instance.HasMeter() || site.GetCircuit() == instance {
			continue
		}

		for _, lp := range loadpoints {
			if lp.GetCircuit() == instance {
				continue CONTINUE
			}
		}

		return fmt.Errorf("circuit %s has no meter or loadpoint assigned", dev.Config().Name)
	}

	if site.GetCircuit() == nil {
		return errors.New("site has no circuit")
	}

	return nil
}

func configureSite(conf map[string]interface{}, loadpoints []*core.Loadpoint, tariffs *tariff.Tariffs) (*core.Site, error) {
	site, err := core.NewSiteFromConfig(log, conf, loadpoints, tariffs)
	if err != nil {
		return nil, fmt.Errorf("failed configuring site: %w", err)
	}

	if len(config.Circuits().Devices()) > 0 && site.GetCircuit() == nil {
		return nil, errors.New("site has no circuit")
	}

	return site, nil
}

func configureLoadpoints(conf globalConfig) ([]*core.Loadpoint, error) {
	if len(conf.Loadpoints) == 0 {
		return nil, errors.New("missing loadpoints")
	}

	var loadpoints []*core.Loadpoint

	for id, cfg := range conf.Loadpoints {
		log := util.NewLoggerWithLoadpoint("lp-"+strconv.Itoa(id+1), id+1)
		settings := &core.Settings{Key: "lp" + strconv.Itoa(id+1) + "."}

		lp, err := core.NewLoadpointFromConfig(log, settings, cfg)
		if err != nil {
			return nil, fmt.Errorf("failed configuring loadpoint: %w", err)
		}

		loadpoints = append(loadpoints, lp)
	}

	return loadpoints, nil
}

// configureAuth handles routing for devices. For now only api.AuthProvider related routes
func configureAuth(conf networkConfig, vehicles []api.Vehicle, router *mux.Router, paramC chan<- util.Param) {
	auth := router.PathPrefix("/oauth").Subrouter()
	auth.Use(handlers.CompressHandler)
	auth.Use(handlers.CORS(
		handlers.AllowedHeaders([]string{"Content-Type"}),
	))

	// wire the handler
	oauth2redirect.SetupRouter(auth)

	// initialize
	authCollection := util.NewAuthCollection(paramC)

	baseURI := conf.URI()
	baseAuthURI := fmt.Sprintf("%s/oauth", baseURI)

	var id int
	for _, v := range vehicles {
		if provider, ok := v.(api.AuthProvider); ok {
			id += 1

			basePath := fmt.Sprintf("vehicles/%d", id)
			callbackURI := fmt.Sprintf("%s/%s/callback", baseAuthURI, basePath)

			// register vehicle
			ap := authCollection.Register(fmt.Sprintf("oauth/%s", basePath), v.Title())

			provider.SetCallbackParams(baseURI, callbackURI, ap.Handler())

			auth.
				Methods(http.MethodPost).
				Path(fmt.Sprintf("/%s/login", basePath)).
				HandlerFunc(provider.LoginHandler())
			auth.
				Methods(http.MethodPost).
				Path(fmt.Sprintf("/%s/logout", basePath)).
				HandlerFunc(provider.LogoutHandler())

			log.INFO.Printf("ensure the oauth client redirect/callback is configured for %s: %s", v.Title(), callbackURI)
		}
	}

	authCollection.Publish()
}