// Kill switch for the pre-rewrite service worker (formerly at repo root, see git history).
// That worker cached every same-origin GET (including session/bootstrap API calls) keyed only
// by frontend PACKAGE_VERSION -- a backend-only change (deploy, migration, cutover) never
// invalidated it, so browsers that had visited this origin before the rewrite kept getting
// stale API responses served instead of hitting the new backend, which looked like "login
// succeeds then immediately bounces back to the login page".
//
// This file's only job is to replace that worker in already-registered browsers and remove
// it entirely: purge its caches, unregister, then reload any open tabs so they load uncontrolled.
// The rewritten app (web/) does not use a service worker for anything -- do not add fetch
// caching logic here.
self.addEventListener('install', () => self.skipWaiting());

self.addEventListener('activate', event => {
  event.waitUntil((async () => {
    const keys = await caches.keys();
    await Promise.all(keys.map(key => caches.delete(key)));
    await self.registration.unregister();
    const clientsList = await self.clients.matchAll({ type: 'window' });
    for (const client of clientsList) {
      client.navigate(client.url);
    }
  })());
});