Fix stacking query parameter

import { NavPageLink } from "./NavPageLink.mjs"

import { logout, isLoggedIn } from "../../account.mjs"

const hasQueryParam = (param, path) => param in m.parsePathname(path).params

export const Nav = {

    view() {

        return m("nav.box", [

                                      iconOnly: true,

                                  })

                                : m(NavPageLink, {

                                      href: `/login?next=${m.route.get() || "/"}`,

                                      href: hasQueryParam("next", m.route.get())

                                          ? m.route.get()

                                          : `/login?next=${m.route.get() || "/"}`,

                                      label: " Anmelden",

                                      icon: "fa-solid fa-right-to-bracket",

                                  }),