mirror of
https://github.com/cse110-fa22-group29/cse110-fa22-group29.git
synced 2024-12-26 17:09:09 +00:00
68 lines
2.2 KiB
JavaScript
68 lines
2.2 KiB
JavaScript
const CACHE_NAME = "food-journal-v1";
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const ASSETS = [
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"index.html",
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"ReviewDetails.html",
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"CreatePage.html",
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"static/CoveredByYourGrace-Regular.ttf",
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"static/CreatePage.css",
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"static/Form.css",
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"static/homepage.css",
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"static/ReviewDetails.css",
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"assets/images/0-star.svg",
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"assets/images/1-star.svg",
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"assets/images/2-star.svg",
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"assets/images/3-star.svg",
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"assets/images/4-star.svg",
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"assets/images/5-star.svg",
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"assets/images/create_button.png",
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"assets/images/default_plate.png",
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"assets/images/delete_icon_for_interface.png",
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"assets/images/edit_button_for_interface.png",
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"assets/images/home_button_for_interface.png",
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"assets/images/favicon.ico",
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"assets/images/Logo.png",
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"assets/images/search_button.png",
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"assets/scripts/CreatePage.js",
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"assets/scripts/localStorage.js",
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"assets/scripts/main.js",
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"assets/scripts/ReviewCard.js",
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"assets/scripts/ReviewDetails.js",
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];
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/**
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* Adds the install listener where the app assets are added to the cache
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*/
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self.addEventListener("install", async () => {
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// open the cace
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const cache = await caches.open(CACHE_NAME);
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// add all elements in ASSETS to the cache, these are all the files requried for the app to run
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await cache.addAll(ASSETS);
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});
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/**
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* Adds an event listener on fetch events to serve cached resources while offline
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* Uses a network first structure to prioritize fetching from network in case of app updates.
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* If there are important updates, we want the user to get those if possible.
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*/
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self.addEventListener("fetch", (event) => {
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// add a response to the fetch event
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event.respondWith(
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caches.open(CACHE_NAME).then((cache) => {
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// try to return a network fetch response
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return fetch(event.request)
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.then((fetchedResponse) => {
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// if there is a response, add it to the cache
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cache.put(event.request, fetchedResponse.clone());
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// return the network response
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return fetchedResponse;
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})
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.catch(() => {
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// If there is not a network response, return the cached response
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// The ignoreVary option is used here to fix an issue where the service worker
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// would not serve certain requests unless the page was refreshed at least once
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return cache.match(event.request, { ignoreVary: true, ignoreSearch: true });
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});
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})
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);
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});
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