54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
const VERSION = "2610"
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function processUrl(event) {
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const url = event.request.url;
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const fileName = url.split("/").pop();
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return {url, fileName};
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}
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self.addEventListener("install", () => {
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self.skipWaiting();
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});
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self.addEventListener("fetch", async (event) => {
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console.log(VERSION);
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const {url, fileName}=processUrl(event);
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event.respondWith(handleRequest(event, url, fileName));
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});
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async function handleRequest(event, url, fileName) {
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switch (fileName) {
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case "version":
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const response = new Response(VERSION);
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return response;
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case "latestVersion":
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return await fetch("/version.txt", {cache: "no-cache"})
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}
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const response = await getFromCache(event);
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if (response) {
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fetchAndCache(event, fileName); // Call this but don't await, allowing the cache to update in the background
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return response;
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}
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return fetchAndCache(event, fileName);
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}
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async function getFromCache(event) {
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const request = event.request;
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const cache = await caches.open(VERSION);
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const response = await cache.match(request);
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return response;
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}
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async function fetchAndCache(event, fileName) {
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const request = event.request;
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const response = await fetch(request, { cache: "no-cache" });
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if (response.status === 200) {
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// Only cache successful responses
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const cache = await caches.open(VERSION);
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await cache.put(request, response.clone());
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}
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return response;
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}
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