ignore-url.js

self.__precacheManifest = [].concat(self.__precacheManifest || []);

/* global workbox */
/** We are sure brotli is enabled for browsers supporting script type=module
 * so we do brotli support only for them.
 * We can do brolti support for other browsers but there is no good way of
 * feature detect the same at the time of pre-caching.
 */
if (process.env.ENABLE_BROTLI && process.env.ES_BUILD) {
	// Alter the precache manifest to precache brotli files instead of gzip files.
	self.__precacheManifest = self.__precacheManifest.map(asset => {
		if (/\.js$/.test(asset.url)) {
			asset.url = asset.url.replace(/\.esm\.js$/, '.esm.js.br');
		}
		return asset;
	});

	class BrotliRedirectPlugin {
		// Before saving the response in cache, we need to treat the headers.
		async cacheWillUpdate({ response }) {
			const clonedResponse = response.clone();
			if (/\.js\.br(\?.*)?$/.test(clonedResponse.url)) {
				const headers = new Headers(clonedResponse.headers);
				headers.set('content-type', 'application/javascript');
				return new Response(await clonedResponse.text(), { headers });
			}
			return response;
		}
	}
	workbox.precaching.addPlugins([new BrotliRedirectPlugin()]);
}

const precacheOptions = {};
if (process.env.ENABLE_BROTLI) {
	precacheOptions['urlManipulation'] = ({ url }) => {
		if (/\.esm\.js$/.test(url.href)) {
			url.href += '.br';
		}
		return [url];
	};
}

const isNav = event => event.request.mode === 'navigate';

workbox.routing.registerRoute(
  ({url, event}) => {
    return (url.pathname === '/special/url');
  },
  workbox.strategies.networkOnly()
);

/**
 * Adding this before `precacheAndRoute` lets us handle all
 * the navigation requests even if they are in precache.
 */
workbox.routing.registerRoute(
	({ event }) => isNav(event),
	new workbox.strategies.NetworkFirst({
		// this cache is plunged with every new service worker deploy so we dont need to care about purging the cache.
		cacheName: workbox.core.cacheNames.precache,
		networkTimeoutSeconds: 5, // if u dont start getting headers within 5 sec fallback to cache.
		plugins: [
			new workbox.cacheableResponse.Plugin({
				statuses: [200], // only cache valid responses, not opaque responses e.g. wifi portal.
			}),
		],
	})
);


workbox.precaching.precacheAndRoute(self.__precacheManifest, precacheOptions);

workbox.routing.setCatchHandler(({ event }) => {
	if (isNav(event))
		return caches.match(workbox.precaching.getCacheKeyForURL('/index.html'));
	return Response.error();
});