forked from Maxluli/TinderPokemon
53 lines
1.5 KiB
JavaScript
53 lines
1.5 KiB
JavaScript
// This code executes in its own worker or thread
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self.addEventListener("install", event => {
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console.log("Service worker installed");
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});
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self.addEventListener("activate", event => {
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console.log("Service worker activated");
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});
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self.addEventListener("fetch", event => {
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// Stratégie Cache-First
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event.respondWith(
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caches
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.match(event.request) // On vérifie si la requête a déjà été mise en cache
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.then(cached => cached || fetch(event.request)) // sinon on requête le réseau
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.then(
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response =>
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cache(event.request, response) // on met à jour le cache
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.then(() => response) // et on résout la promesse avec l'objet Response
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)
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);
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});
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function cache(request, response) {
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if (response.type === "error" || response.type === "opaque") {
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return Promise.resolve(); // do not put in cache network errors
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}
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return caches
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.open(CACHE_NAME)
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.then(cache => cache.put(request, response.clone()));
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}
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const CACHE_NAME = "V2";
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self.addEventListener("activate", event => {
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// delete any unexpected caches
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event.waitUntil(
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caches
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.keys()
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.then(keys => keys.filter(key => key !== CACHE_NAME))
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.then(keys =>
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Promise.all(
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keys.map(key => {
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console.log(`Deleting cache ${key}`);
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return caches.delete(key);
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})
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)
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)
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);
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}); |