package app

import (
	"time"

	"forge.cadoles.com/Cadoles/emissary/internal/agent/controller/app/spec"
	"forge.cadoles.com/Cadoles/emissary/internal/jwk"
	"forge.cadoles.com/arcad/edge/pkg/app"
	"forge.cadoles.com/arcad/edge/pkg/module"
	"forge.cadoles.com/arcad/edge/pkg/module/auth"
	authModule "forge.cadoles.com/arcad/edge/pkg/module/auth"
	authHTTP "forge.cadoles.com/arcad/edge/pkg/module/auth/http"
	"github.com/dop251/goja"
	"github.com/lestrrat-go/jwx/v2/jwa"
	"github.com/pkg/errors"
)

const (
	RoleVisitor    string = "visitor"
	RoleUser       string = "user"
	RoleSuperuser  string = "superuser"
	RoleAdmin      string = "admin"
	RoleSuperadmin string = "superadmin"
)

func authModuleFactory(keySet jwk.Set) app.ServerModuleFactory {
	return module.Extends(
		authModule.ModuleFactory(
			authModule.WithJWT(func() (jwk.Set, error) {
				return keySet, nil
			}),
		),
		func(o *goja.Object) {
			if err := o.Set("ROLE_VISITOR", RoleVisitor); err != nil {
				panic(errors.New("could not set 'ROLE_VISITOR' property"))
			}

			if err := o.Set("ROLE_USER", RoleUser); err != nil {
				panic(errors.New("could not set 'ROLE_USER' property"))
			}

			if err := o.Set("ROLE_SUPERUSER", RoleSuperuser); err != nil {
				panic(errors.New("could not set 'ROLE_SUPERUSER' property"))
			}

			if err := o.Set("ROLE_ADMIN", RoleAdmin); err != nil {
				panic(errors.New("could not set 'ROLE_ADMIN' property"))
			}

			if err := o.Set("ROLE_SUPERADMIN", RoleSuperadmin); err != nil {
				panic(errors.New("could not set 'ROLE_SUPERADMIN' property"))
			}
		},
	)
}

func getAuthMount(auth *spec.Auth, keySet jwk.Set) (auth.MountFunc, error) {
	switch {
	case auth.Local != nil:
		var rawKey any = auth.Local.Key
		if strKey, ok := rawKey.(string); ok {
			rawKey = []byte(strKey)
		}

		key, err := jwk.FromRaw(rawKey)
		if err != nil {
			return nil, errors.WithStack(err)
		}

		cookieDuration := defaultCookieDuration
		if auth.Local.CookieDuration != "" {
			cookieDuration, err = time.ParseDuration(auth.Local.CookieDuration)
			if err != nil {
				return nil, errors.WithStack(err)
			}
		}

		return authModule.Mount(
			authHTTP.NewLocalHandler(
				jwa.HS256, key,
				authHTTP.WithRoutePrefix("/auth"),
				authHTTP.WithAccounts(auth.Local.Accounts...),
				authHTTP.WithCookieOptions(getCookieDomain, cookieDuration),
			),
			authModule.WithJWT(func() (jwk.Set, error) {
				return keySet, nil
			}),
		), nil

	default:
		return nil, nil
	}
}