https://reatimes.vn/sw.js

1// Core assets
2let coreAssets = [];
3
4// On install, cache core assets
5self.addEventListener('install', function (event) {
6	self.skipWaiting();
7	// Cache core assets
8	event.waitUntil(caches.open('app').then(function (cache) {
9		for (let asset of coreAssets) {
10			cache.add(new Request(asset));
11		}
12		return cache;
13	}));
14
15});
16
17self.addEventListener('activate', function(event) {
18  event.waitUntil(clients.claim());
19});
20
21// Listen for request events
22self.addEventListener('fetch', function (event) {
23
24	// Get the request
25	let request = event.request;
26
27
28	// Bug fix
29	// https://stackoverflow.com/a/49719964
30	if (event.request.cache === 'only-if-cached' && event.request.mode !== 'same-origin') return;
31
32	// HTML files
33	// Network-first
34	if (
35		(
36			//request.url.startsWith(self.location.origin) || 
37			request.url.startsWith('https://adminplayer.sohatv.vn') ||
38			request.url.startsWith('https://player.sohatv.vn') || 
39			request.url.startsWith('https://ims.mediacdn.vn')
40		) &&
41		!request.url.startsWith(self.location.origin + '/sw.js') &&
42		!request.url.startsWith(self.location.origin + '/manifest.json')
43	) {
44		event.respondWith(
45			fetch(request).then(function (response) {
46
47				// Create a copy of the response and save it to the cache
48				let copy = response.clone();
49				event.waitUntil(caches.open('app').then(function (cache) {
50					return cache.put(request, copy);
51				}));
52
53				// Return the response
54				return response;
55
56			}).catch(function (error) {
57
58				// If there's no item in cache, respond with a fallback
59				return caches.match(request).then(function (response) {
60					return response || caches.match('/offline.html');
61				});
62
63			})
64		);
65	}
66
67	// Static
68	// Offline-first
69	if (
70		request.url.includes('https://static.contineljs.com/fonts/') ||
71		request.url.includes('https://cdnstoremedia.com/adt/cpc/tvcads/files/images/') ||
72		request.url.includes('https://static.mediacdn.vn')
73	) {
74		event.respondWith(
75			caches.match(request).then(function (response) {
76				return response || fetch(request).then(function (response) {
77
78					// Save a copy of it in cache
79					let copy = response.clone();
80					event.waitUntil(caches.open('app').then(function (cache) {
81						return cache.put(request, copy);
82					}));
83
84					// Return the response
85					return response;
86
87				});
88			})
89		);
90	}
91});