PacketStation/frontend/src/components/TopBar.tsx

import { useEffect, useState, type ReactNode } from "react";
import { Link } from "react-router";
import logo from "../assets/logo.png";
import { setMotion, useMotion } from "../lib/motion";

/** The Motion on / Motion off switch (the old motionBtn), with a short toast on toggle. */
export function MotionButton() {
  const on = useMotion();
  const [toast, setToast] = useState<string | null>(null);
  useEffect(() => {
    if (!toast) return;
    const t = window.setTimeout(() => setToast(null), 2500);
    return () => window.clearTimeout(t);
  }, [toast]);
  return (
    <>
      <button
        className="btn sm ghost mbtn"
        type="button"
        aria-pressed={on}
        title={on ? "Turn animations off" : "Turn animations on"}
        onClick={() => {
          setMotion(!on);
          setToast(on ? "Motion off" : "Motion on");
        }}
      >
        <span className="mdot" aria-hidden="true" />
        {on ? "Motion on" : "Motion off"}
      </button>
      {toast ? (
        <div className="toast" role="status" data-testid="motion-toast">
          {toast}
        </div>
      ) : null}
    </>
  );
}

interface TopBarProps {
  /** The role switcher, drawn between the brand and the spacer. */
  nav?: ReactNode;
  /** Right-hand side: the signed-in user, the role chip, Account and Sign out. */
  children?: ReactNode;
  /** A strip above the bar, inside the sticky header so it stays in view (the build-version banner). */
  banner?: ReactNode;
}

/** Sticky shop header. Same markup classes as the old page's header.top. */
export function TopBar({ nav, children, banner }: TopBarProps) {
  return (
    <header className="top">
      {banner}
      <div className="top-in">
        <Link className="brand" to="/" aria-label="Packet Station home">
          <img alt="PESCO" src={logo} width={119} height={34} />
          <div className="nm">
            Packet <span>Station</span>
          </div>
        </Link>
        {nav}
        <MotionButton />
        <div className="sp" />
        {children ? <div className="who">{children}</div> : null}
      </div>
    </header>
  );
}