89 lines
3.0 KiB
JavaScript
89 lines
3.0 KiB
JavaScript
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const debug = false;
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const CACHE_NAME = 'csvxml-cache-v1';
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const urlsToCache = [
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'/index.htm',
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'/assets/js/jszip/dist/jszip.min.js',
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'/assets/js/csvxmlV2.min.js',
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'/assets/css/csvxml.min.css',
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'/assets/fonts/SourceSansPro-Regular.woff2',
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'/json/fields.de.json',
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'/json/fields.en.json',
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'/json/fields.hu.json',
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'/json/tls.de.json',
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'/json/tls.en.json',
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'/json/tls.hu.json',
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];
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self.addEventListener('install', function(event) {
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// Perform install steps
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event.waitUntil(
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Promise.all([
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caches.open(CACHE_NAME)
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.then(function(cache) {
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if (debug === true) console.log('Opened cache');
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return cache.addAll(urlsToCache.map(url => new Request(url, {credentials: 'same-origin'})));
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}),
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])
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);
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});
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self.addEventListener('fetch', function(event) {
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if (event.request.url.startsWith(location.origin) === false) return;
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event.respondWith(
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caches.match(event.request)
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.then(function(response) {
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if (response) {
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if (debug === true) console.log("Serving " + event.request.url + " from cache.");
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return response;
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}
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// IMPORTANT: Clone the request. A request is a stream and
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// can only be consumed once. Since we are consuming this
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// once by cache and once by the browser for fetch, we need
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// to clone the response.
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var fetchRequest = event.request.clone();
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return fetch(fetchRequest).then(
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function(response) {
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// Check if we received a valid response
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if(!response || response.status !== 200 || response.type !== 'basic') {
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return response;
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}
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var responseToCache = response.clone();
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caches.open(CACHE_NAME)
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.then(function(cache) {
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if (debug === true) console.log("Added " + event.request.url + "to cache");
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cache.put(event.request, responseToCache);
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});
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return response;
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}
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).catch(
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() => {
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console.log("Problem");
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if (event.request.url.indexOf("index.php?") == -1) return;
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else {
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console.log("Fixing");
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return caches.open(CACHE_NAME).then(
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function(cache) {
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// cache.keys().then(function(keys) { console.log(keys); })
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// return cache.match("index.php")
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});
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}
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}
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);
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})
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);
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});
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