// Retired service worker — this file no longer serves anything.
//
// The app used to register a worker that cached /_next/static/ and /assets/
// cache-first under a cache name with no build id. A release could not
// invalidate it, so browsers replayed the previous release's chunks against
// the new HTML and React never hydrated, which is what left the Catalog
// Studio on a blank white page. It also bought nothing: nginx already sends
// those two prefixes as `max-age=31536000, immutable` and their filenames are
// content-hashed, so the HTTP cache already handles them correctly.
//
// This file must stay at /sw.js and keep its install/activate handlers.
// Simply deleting it would leave every existing registration alive and in
// control of the page, with the old caching still running. Instead this
// worker does the opposite of what it used to: it deletes every cache and
// unregisters itself, then reloads open clients so they stop being
// controlled by it.
//
// Nothing registers it any more (see src/app/layout.tsx), so this only ever
// runs for browsers that already have a worker installed. Once a visitor
// loads the site again it uninstalls itself and never comes back.
//
// The manifest is unrelated and untouched — it is generated by
// src/app/manifest.ts and keeps the site installable without a worker.

self.addEventListener("install", () => self.skipWaiting());

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