export async function registerServiceWorker() {
  if (!("serviceWorker" in navigator)) {
    return;
  }

  try {
    const registrations = await navigator.serviceWorker.getRegistrations();
    await Promise.all(registrations.map((registration) => registration.unregister()));

    if ("caches" in window) {
      const cacheNames = await window.caches.keys();
      await Promise.all(
        cacheNames
          .filter((name) => name.startsWith("oapix-static"))
          .map((name) => window.caches.delete(name))
      );
    }
  } catch (error) {
    console.error("service worker cleanup failed", error);
  }
}