216 lines
8.7 KiB
JavaScript
216 lines
8.7 KiB
JavaScript
'use strict';
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const MANIFEST = 'flutter-app-manifest';
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const TEMP = 'flutter-temp-cache';
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const CACHE_NAME = 'flutter-app-cache';
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const RESOURCES = {"flutter_bootstrap.js": "469cc1d59df68a1b3445a309825b04f9",
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"version.json": "68a2c34273facd8746fcbed8e55f2cde",
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"index.html": "69e575b74f43e863d7f8f52df5d1e44e",
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"/": "69e575b74f43e863d7f8f52df5d1e44e",
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"main.dart.js": "953983983c12bbd0e29a1bdc3d8b7cf6",
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"flutter.js": "76f08d47ff9f5715220992f993002504",
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"favicon.png": "5dcef449791fa27946b3d35ad8803796",
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"icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1",
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"icons/Icon-maskable-192.png": "c457ef57daa1d16f64b27b786ec2ea3c",
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"icons/Icon-maskable-512.png": "301a7604d45b3e739efc881eb04896ea",
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"icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1",
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"manifest.json": "cfbf0d22783be7ed41922d90aa01f2fa",
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"assets/AssetManifest.json": "70c145777b7956eeb9b24e00d6b0cc8b",
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"assets/NOTICES": "4acbff2d4e2a38ecb315769b32809709",
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"assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57",
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"assets/AssetManifest.bin.json": "e16f9a6c08b2c78fad2a2258ccfed684",
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"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "b93248a553f9e8bc17f1065929d5934b",
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"assets/shaders/ink_sparkle.frag": "ecc85a2e95f5e9f53123dcaf8cb9b6ce",
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"assets/AssetManifest.bin": "2541e1c974f653f4e8a2e89701968e20",
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"assets/fonts/MaterialIcons-Regular.otf": "e7069dfd19b331be16bed984668fe080",
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"assets/assets/flags/en.png": "2809724958f27fd9458767407d8fda4c",
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"assets/assets/flags/fr.png": "98ed847d113e4f1899819db4904e9a3b",
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"assets/assets/flags/de.png": "9d5e371664c5262ba186790ab1b50008",
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"assets/assets/backgrounds/Service.jpg": "a23942d327d97ef09eff185edef8a7dc",
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"assets/assets/backgrounds/Speziell.jpg": "0d28117efe3580e5ab3e126983a8b099",
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"assets/assets/backgrounds/Ambiente.jpg": "7a803ff59921926f982055da06a652f1",
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"assets/assets/backgrounds/Anmerkungen.jpg": "e568c0fd7bde23c523ca28a4e657fae0",
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"assets/assets/backgrounds/Essen.jpg": "ccee347c345e48b3b54ae1878e68ddb1",
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"canvaskit/skwasm_st.js": "d1326ceef381ad382ab492ba5d96f04d",
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"canvaskit/skwasm.js": "f2ad9363618c5f62e813740099a80e63",
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"canvaskit/skwasm.js.symbols": "80806576fa1056b43dd6d0b445b4b6f7",
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"canvaskit/canvaskit.js.symbols": "68eb703b9a609baef8ee0e413b442f33",
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"canvaskit/skwasm.wasm": "f0dfd99007f989368db17c9abeed5a49",
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"canvaskit/chromium/canvaskit.js.symbols": "5a23598a2a8efd18ec3b60de5d28af8f",
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"canvaskit/chromium/canvaskit.js": "34beda9f39eb7d992d46125ca868dc61",
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"canvaskit/chromium/canvaskit.wasm": "64a386c87532ae52ae041d18a32a3635",
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"canvaskit/skwasm_st.js.symbols": "c7e7aac7cd8b612defd62b43e3050bdd",
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"canvaskit/canvaskit.js": "86e461cf471c1640fd2b461ece4589df",
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"canvaskit/canvaskit.wasm": "efeeba7dcc952dae57870d4df3111fad",
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"canvaskit/skwasm_st.wasm": "56c3973560dfcbf28ce47cebe40f3206"};
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// The application shell files that are downloaded before a service worker can
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// start.
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const CORE = ["main.dart.js",
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"index.html",
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"flutter_bootstrap.js",
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"assets/AssetManifest.bin.json",
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"assets/FontManifest.json"];
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// During install, the TEMP cache is populated with the application shell files.
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self.addEventListener("install", (event) => {
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self.skipWaiting();
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return event.waitUntil(
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caches.open(TEMP).then((cache) => {
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return cache.addAll(
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CORE.map((value) => new Request(value, {'cache': 'reload'})));
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})
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);
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});
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// During activate, the cache is populated with the temp files downloaded in
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// install. If this service worker is upgrading from one with a saved
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// MANIFEST, then use this to retain unchanged resource files.
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self.addEventListener("activate", function(event) {
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return event.waitUntil(async function() {
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try {
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var contentCache = await caches.open(CACHE_NAME);
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var tempCache = await caches.open(TEMP);
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var manifestCache = await caches.open(MANIFEST);
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var manifest = await manifestCache.match('manifest');
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// When there is no prior manifest, clear the entire cache.
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if (!manifest) {
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await caches.delete(CACHE_NAME);
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contentCache = await caches.open(CACHE_NAME);
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for (var request of await tempCache.keys()) {
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var response = await tempCache.match(request);
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await contentCache.put(request, response);
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}
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await caches.delete(TEMP);
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// Save the manifest to make future upgrades efficient.
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await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
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// Claim client to enable caching on first launch
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self.clients.claim();
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return;
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}
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var oldManifest = await manifest.json();
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var origin = self.location.origin;
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for (var request of await contentCache.keys()) {
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var key = request.url.substring(origin.length + 1);
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if (key == "") {
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key = "/";
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}
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// If a resource from the old manifest is not in the new cache, or if
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// the MD5 sum has changed, delete it. Otherwise the resource is left
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// in the cache and can be reused by the new service worker.
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if (!RESOURCES[key] || RESOURCES[key] != oldManifest[key]) {
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await contentCache.delete(request);
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}
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}
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// Populate the cache with the app shell TEMP files, potentially overwriting
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// cache files preserved above.
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for (var request of await tempCache.keys()) {
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var response = await tempCache.match(request);
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await contentCache.put(request, response);
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}
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await caches.delete(TEMP);
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// Save the manifest to make future upgrades efficient.
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await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
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// Claim client to enable caching on first launch
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self.clients.claim();
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return;
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} catch (err) {
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// On an unhandled exception the state of the cache cannot be guaranteed.
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console.error('Failed to upgrade service worker: ' + err);
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await caches.delete(CACHE_NAME);
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await caches.delete(TEMP);
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await caches.delete(MANIFEST);
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}
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}());
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});
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// The fetch handler redirects requests for RESOURCE files to the service
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// worker cache.
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self.addEventListener("fetch", (event) => {
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if (event.request.method !== 'GET') {
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return;
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}
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var origin = self.location.origin;
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var key = event.request.url.substring(origin.length + 1);
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// Redirect URLs to the index.html
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if (key.indexOf('?v=') != -1) {
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key = key.split('?v=')[0];
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}
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if (event.request.url == origin || event.request.url.startsWith(origin + '/#') || key == '') {
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key = '/';
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}
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// If the URL is not the RESOURCE list then return to signal that the
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// browser should take over.
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if (!RESOURCES[key]) {
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return;
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}
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// If the URL is the index.html, perform an online-first request.
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if (key == '/') {
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return onlineFirst(event);
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}
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event.respondWith(caches.open(CACHE_NAME)
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.then((cache) => {
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return cache.match(event.request).then((response) => {
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// Either respond with the cached resource, or perform a fetch and
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// lazily populate the cache only if the resource was successfully fetched.
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return response || fetch(event.request).then((response) => {
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if (response && Boolean(response.ok)) {
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cache.put(event.request, response.clone());
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}
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return response;
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});
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})
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})
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);
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});
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self.addEventListener('message', (event) => {
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// SkipWaiting can be used to immediately activate a waiting service worker.
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// This will also require a page refresh triggered by the main worker.
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if (event.data === 'skipWaiting') {
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self.skipWaiting();
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return;
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}
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if (event.data === 'downloadOffline') {
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downloadOffline();
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return;
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}
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});
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// Download offline will check the RESOURCES for all files not in the cache
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// and populate them.
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async function downloadOffline() {
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var resources = [];
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var contentCache = await caches.open(CACHE_NAME);
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var currentContent = {};
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for (var request of await contentCache.keys()) {
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var key = request.url.substring(origin.length + 1);
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if (key == "") {
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key = "/";
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}
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currentContent[key] = true;
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}
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for (var resourceKey of Object.keys(RESOURCES)) {
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if (!currentContent[resourceKey]) {
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resources.push(resourceKey);
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}
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}
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return contentCache.addAll(resources);
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}
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// Attempt to download the resource online before falling back to
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// the offline cache.
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function onlineFirst(event) {
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return event.respondWith(
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fetch(event.request).then((response) => {
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return caches.open(CACHE_NAME).then((cache) => {
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cache.put(event.request, response.clone());
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return response;
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});
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}).catch((error) => {
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return caches.open(CACHE_NAME).then((cache) => {
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return cache.match(event.request).then((response) => {
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if (response != null) {
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return response;
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}
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throw error;
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});
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});
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})
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);
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}
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