flutter_service_worker.js

'use strict';
const MANIFEST = 'flutter-app-manifest';
const TEMP = 'flutter-temp-cache';
const CACHE_NAME = 'flutter-app-cache';

const RESOURCES = {".git/COMMIT_EDITMSG": "a8297d555dd34879e8e48e1cf12acefa",
".git/config": "e75615f6d4b6def0ee53f7a662941e60",
".git/description": "a0a7c3fff21f2aea3cfa1d0316dd816c",
".git/HEAD": "cf7dd3ce51958c5f13fece957cc417fb",
".git/hooks/applypatch-msg.sample": "ce562e08d8098926a3862fc6e7905199",
".git/hooks/commit-msg.sample": "579a3c1e12a1e74a98169175fb913012",
".git/hooks/fsmonitor-watchman.sample": "a0b2633a2c8e97501610bd3f73da66fc",
".git/hooks/post-update.sample": "2b7ea5cee3c49ff53d41e00785eb974c",
".git/hooks/pre-applypatch.sample": "054f9ffb8bfe04a599751cc757226dda",
".git/hooks/pre-commit.sample": "305eadbbcd6f6d2567e033ad12aabbc4",
".git/hooks/pre-merge-commit.sample": "39cb268e2a85d436b9eb6f47614c3cbc",
".git/hooks/pre-push.sample": "2c642152299a94e05ea26eae11993b13",
".git/hooks/pre-rebase.sample": "56e45f2bcbc8226d2b4200f7c46371bf",
".git/hooks/pre-receive.sample": "2ad18ec82c20af7b5926ed9cea6aeedd",
".git/hooks/prepare-commit-msg.sample": "2b5c047bdb474555e1787db32b2d2fc5",
".git/hooks/push-to-checkout.sample": "c7ab00c7784efeadad3ae9b228d4b4db",
".git/hooks/update.sample": "647ae13c682f7827c22f5fc08a03674e",
".git/index": "a549b39f3662fba016dfa66e1f8239cc",
".git/info/exclude": "036208b4a1ab4a235d75c181e685e5a3",
".git/logs/HEAD": "4e59c716e2a28bd439bb39833aa611a4",
".git/logs/refs/heads/main": "c9c35b446bb21e9cd546776b5d7ef568",
".git/logs/refs/remotes/origin/main": "522785decae7ceaa93492bfad4868b28",
".git/objects/0e/b6ecc0fedd802b54e6601735c7a0f8ca53cd18": "e52975f33d2db96ee08e4a19af95e6b3",
".git/objects/14/62bdceed1650ae333b6adee408445a7435766d": "0b4d678d07b9f403b48378c396c8ba76",
".git/objects/4e/8b14efd19007c0064ba60cfcf97718b2e92ab7": "ee039059970e5639d31bae19c4a74e9e",
".git/objects/5f/524a545262943bc0ea07d4b44fdc91d1418e75": "b395905f5128aaa4d200bb662c44b8b3",
".git/objects/88/cfd48dff1169879ba46840804b412fe02fefd6": "e42aaae6a4cbfbc9f6326f1fa9e3380c",
".git/objects/8a/aa46ac1ae21512746f852a42ba87e4165dfdd1": "1d8820d345e38b30de033aa4b5a23e7b",
".git/objects/b7/49bfef07473333cf1dd31e9eed89862a5d52aa": "36b4020dca303986cad10924774fb5dc",
".git/objects/b9/2a0d854da9a8f73216c4a0ef07a0f0a44e4373": "f62d1eb7f51165e2a6d2ef1921f976f3",
".git/objects/d6/9c56691fbdb0b7efa65097c7cc1edac12a6d3e": "868ce37a3a78b0606713733248a2f579",
".git/objects/eb/9b4d76e525556d5d89141648c724331630325d": "37c0954235cbe27c4d93e74fe9a578ef",
".git/refs/heads/main": "31afd59e30a9a893c8e5f0cb6c44ccce",
".git/refs/remotes/origin/main": "31afd59e30a9a893c8e5f0cb6c44ccce",
"assets/AssetManifest.bin": "e2d258032de8c620ed7aaf7063705c9e",
"assets/AssetManifest.bin.json": "405ae4ac2efabaf77dbcde301abd1ed7",
"assets/AssetManifest.json": "99e0f2ed5dbd650275dc58465507ea95",
"assets/assets/cloud.json": "edcbcfc02d626a3ae8f2425dab383007",
"assets/assets/rain.json": "aa747542cd178ebb84dd3e1b8b3b83a7",
"assets/assets/sunny.json": "b047ac399b6f9cff4ba49f864080f879",
"assets/assets/thunder.json": "fe338e32ffc10c1758dbacc188cddce8",
"assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57",
"assets/fonts/MaterialIcons-Regular.otf": "0db35ae7a415370b89e807027510caf0",
"assets/NOTICES": "9b8707e47405198fae8a7f7fd1fa38f1",
"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "89ed8f4e49bcdfc0b5bfc9b24591e347",
"assets/shaders/ink_sparkle.frag": "ecc85a2e95f5e9f53123dcaf8cb9b6ce",
"canvaskit/canvaskit.js": "c86fbd9e7b17accae76e5ad116583dc4",
"canvaskit/canvaskit.js.symbols": "38cba9233b92472a36ff011dc21c2c9f",
"canvaskit/canvaskit.wasm": "3d2a2d663e8c5111ac61a46367f751ac",
"canvaskit/chromium/canvaskit.js": "43787ac5098c648979c27c13c6f804c3",
"canvaskit/chromium/canvaskit.js.symbols": "4525682ef039faeb11f24f37436dca06",
"canvaskit/chromium/canvaskit.wasm": "f5934e694f12929ed56a671617acd254",
"canvaskit/skwasm.js": "445e9e400085faead4493be2224d95aa",
"canvaskit/skwasm.js.symbols": "741d50ffba71f89345996b0aa8426af8",
"canvaskit/skwasm.wasm": "e42815763c5d05bba43f9d0337fa7d84",
"canvaskit/skwasm.worker.js": "bfb704a6c714a75da9ef320991e88b03",
"favicon.png": "5dcef449791fa27946b3d35ad8803796",
"flutter.js": "c71a09214cb6f5f8996a531350400a9a",
"icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1",
"icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1",
"icons/Icon-maskable-192.png": "c457ef57daa1d16f64b27b786ec2ea3c",
"icons/Icon-maskable-512.png": "301a7604d45b3e739efc881eb04896ea",
"index.html": "8eaffae03c74fc393a2381dc048d5458",
"/": "8eaffae03c74fc393a2381dc048d5458",
"main.dart.js": "ebe650b4f4577fb495177221a758631f",
"manifest.json": "c159c0afe043d08c523eff28dba5cd9e",
"version.json": "8be58cbee25fe29700d00c85d03fd6e0"};
// The application shell files that are downloaded before a service worker can
// start.
const CORE = ["main.dart.js",
"index.html",
"assets/AssetManifest.bin.json",
"assets/FontManifest.json"];

// During install, the TEMP cache is populated with the application shell files.
self.addEventListener("install", (event) => {
  self.skipWaiting();
  return event.waitUntil(
    caches.open(TEMP).then((cache) => {
      return cache.addAll(
        CORE.map((value) => new Request(value, {'cache': 'reload'})));
    })
  );
});
// During activate, the cache is populated with the temp files downloaded in
// install. If this service worker is upgrading from one with a saved
// MANIFEST, then use this to retain unchanged resource files.
self.addEventListener("activate", function(event) {
  return event.waitUntil(async function() {
    try {
      var contentCache = await caches.open(CACHE_NAME);
      var tempCache = await caches.open(TEMP);
      var manifestCache = await caches.open(MANIFEST);
      var manifest = await manifestCache.match('manifest');
      // When there is no prior manifest, clear the entire cache.
      if (!manifest) {
        await caches.delete(CACHE_NAME);
        contentCache = await caches.open(CACHE_NAME);
        for (var request of await tempCache.keys()) {
          var response = await tempCache.match(request);
          await contentCache.put(request, response);
        }
        await caches.delete(TEMP);
        // Save the manifest to make future upgrades efficient.
        await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
        // Claim client to enable caching on first launch
        self.clients.claim();
        return;
      }
      var oldManifest = await manifest.json();
      var origin = self.location.origin;
      for (var request of await contentCache.keys()) {
        var key = request.url.substring(origin.length + 1);
        if (key == "") {
          key = "/";
        }
        // If a resource from the old manifest is not in the new cache, or if
        // the MD5 sum has changed, delete it. Otherwise the resource is left
        // in the cache and can be reused by the new service worker.
        if (!RESOURCES[key] || RESOURCES[key] != oldManifest[key]) {
          await contentCache.delete(request);
        }
      }
      // Populate the cache with the app shell TEMP files, potentially overwriting
      // cache files preserved above.
      for (var request of await tempCache.keys()) {
        var response = await tempCache.match(request);
        await contentCache.put(request, response);
      }
      await caches.delete(TEMP);
      // Save the manifest to make future upgrades efficient.
      await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
      // Claim client to enable caching on first launch
      self.clients.claim();
      return;
    } catch (err) {
      // On an unhandled exception the state of the cache cannot be guaranteed.
      console.error('Failed to upgrade service worker: ' + err);
      await caches.delete(CACHE_NAME);
      await caches.delete(TEMP);
      await caches.delete(MANIFEST);
    }
  }());
});
// The fetch handler redirects requests for RESOURCE files to the service
// worker cache.
self.addEventListener("fetch", (event) => {
  if (event.request.method !== 'GET') {
    return;
  }
  var origin = self.location.origin;
  var key = event.request.url.substring(origin.length + 1);
  // Redirect URLs to the index.html
  if (key.indexOf('?v=') != -1) {
    key = key.split('?v=')[0];
  }
  if (event.request.url == origin || event.request.url.startsWith(origin + '/#') || key == '') {
    key = '/';
  }
  // If the URL is not the RESOURCE list then return to signal that the
  // browser should take over.
  if (!RESOURCES[key]) {
    return;
  }
  // If the URL is the index.html, perform an online-first request.
  if (key == '/') {
    return onlineFirst(event);
  }
  event.respondWith(caches.open(CACHE_NAME)
    .then((cache) =>  {
      return cache.match(event.request).then((response) => {
        // Either respond with the cached resource, or perform a fetch and
        // lazily populate the cache only if the resource was successfully fetched.
        return response || fetch(event.request).then((response) => {
          if (response && Boolean(response.ok)) {
            cache.put(event.request, response.clone());
          }
          return response;
        });
      })
    })
  );
});
self.addEventListener('message', (event) => {
  // SkipWaiting can be used to immediately activate a waiting service worker.
  // This will also require a page refresh triggered by the main worker.
  if (event.data === 'skipWaiting') {
    self.skipWaiting();
    return;
  }
  if (event.data === 'downloadOffline') {
    downloadOffline();
    return;
  }
});
// Download offline will check the RESOURCES for all files not in the cache
// and populate them.
async function downloadOffline() {
  var resources = [];
  var contentCache = await caches.open(CACHE_NAME);
  var currentContent = {};
  for (var request of await contentCache.keys()) {
    var key = request.url.substring(origin.length + 1);
    if (key == "") {
      key = "/";
    }
    currentContent[key] = true;
  }
  for (var resourceKey of Object.keys(RESOURCES)) {
    if (!currentContent[resourceKey]) {
      resources.push(resourceKey);
    }
  }
  return contentCache.addAll(resources);
}
// Attempt to download the resource online before falling back to
// the offline cache.
function onlineFirst(event) {
  return event.respondWith(
    fetch(event.request).then((response) => {
      return caches.open(CACHE_NAME).then((cache) => {
        cache.put(event.request, response.clone());
        return response;
      });
    }).catch((error) => {
      return caches.open(CACHE_NAME).then((cache) => {
        return cache.match(event.request).then((response) => {
          if (response != null) {
            return response;
          }
          throw error;
        });
      });
    })
  );
}