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": "6e9db2906de092cfc00c6b5c9565fa12",
".git/config": "89d7f88064e322a5fcac9ae5342cbf0a",
".git/description": "a0a7c3fff21f2aea3cfa1d0316dd816c",
".git/FETCH_HEAD": "eeaf4f7593a8609887959a920408783c",
".git/HEAD": "cf7dd3ce51958c5f13fece957cc417fb",
".git/hooks/applypatch-msg.sample": "ce562e08d8098926a3862fc6e7905199",
".git/hooks/commit-msg.sample": "579a3c1e12a1e74a98169175fb913012",
".git/hooks/fsmonitor-watchman.sample": "ea587b0fae70333bce92257152996e70",
".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": "e6172543163812fd685d973c2f555872",
".git/info/exclude": "036208b4a1ab4a235d75c181e685e5a3",
".git/logs/HEAD": "7b498c71df52b9e4ea071e7779d04bc1",
".git/logs/refs/heads/main": "e597290f461ab23d6b8d74588f6b1684",
".git/logs/refs/remotes/origin/main": "ede0accf1cee0c990543660b8f20a97b",
".git/objects/03/eaddffb9c0e55fb7b5f9b378d9134d8d75dd37": "87850ce0a3dd72f458581004b58ac0d6",
".git/objects/05/cea77a2d2ae3625ebaa7fdfcc7088704f2e6ff": "6fb294156d18e58d20b0b543eba0b238",
".git/objects/0d/0df08f7c3e147a8ae36017cf81a96e35b73717": "106e868f28a72727fb6fb0fa71123633",
".git/objects/18/569a2b8bab2144ff5d7274b1db9d3caaa27aa5": "c8301039da6b6b5555ab369021e3a057",
".git/objects/20/835b2924ba0a8360be14470dd20d8060ac7560": "269af97573dd15548ad11950ed24b704",
".git/objects/24/b1f14dd348b07c9b8373758bde9ac14d16fd92": "dbf45d6c044044561758a334420e9569",
".git/objects/27/1ee2b88bd1953703ecc01a1715bdeb0eaa00ba": "06d5356a6f721e91a38703cdadbceedb",
".git/objects/27/7e4d09eecca0a30c06b00fa5f427c8dde4bb5e": "5b826f15040ecc5b2ff7b2827fbf2420",
".git/objects/27/ee4e5e685a4432e1adc16097f2386ad480357a": "ee0ed0d89f98772bfd9ef9c41b69c779",
".git/objects/2d/cf3542c874e33cd8ab86ceb6f0ec444228aa78": "66baad0ae5d874f09b6eee790095bc65",
".git/objects/31/60c96adeb06b1f48f2e885335802ac62a7ae40": "8d635d39017ecabcc891fff8f782ed08",
".git/objects/38/7e82037a696ae228395c4cf20723089de4334a": "6979a6c85492ebf0e0c3bb790d736ab3",
".git/objects/43/ec408c2ecc084a02fcd995449a1ea961558a60": "5ad8c9bf4a53a80f41630984c4acec06",
".git/objects/44/e998b1ef2b1e13219e42dc49ac233a4413a092": "8cdded827517cefa8c6652689a47a9ed",
".git/objects/46/4ab5882a2234c39b1a4dbad5feba0954478155": "2e52a767dc04391de7b4d0beb32e7fc4",
".git/objects/4a/8ef4663a0e6a9e5a84178a3f487d1bcba83375": "72fed3987c8215e7cbe7cbe08107e9c0",
".git/objects/4a/bf0d39e05129bd08c12c42e85271eec56df72f": "9a1424c37684875d0e3f986663f696b8",
".git/objects/4e/89617a3696bd10c155ec378f4a65a9f89e9e3a": "d8056e20bae90d092b619c895129e982",
".git/objects/50/3c79f67b76dcce2efb8cc423de7dcc09d01c2c": "2c4c23966301dc1ffb52afdc06374219",
".git/objects/52/480a63b1f184ea74afb06662aa98fa98864864": "6f8b2cf71be2b4830601f9db57eded45",
".git/objects/64/738d3165e99e3a783c7574b476a4e9174aaf49": "9a7ff543df33f01e3b54e5d7c9531f42",
".git/objects/66/2581fbc59e94693b25494af9da39309fd86f5c": "8fb1431dde2507e9cc7a9b0d953a84ce",
".git/objects/76/8651b2e249c2517c7b37bdbeea0a5d8bfbb707": "495b1c4fefa633f6afe4dc5840ebe18f",
".git/objects/79/ba7ea0836b93b3f178067bcd0a0945dbc26b3f": "f3e31aec622d6cf63f619aa3a6023103",
".git/objects/7e/983406902e51f5688457526bd31766edae17b0": "05363f4798cae46a0597f323b882bb33",
".git/objects/88/cfd48dff1169879ba46840804b412fe02fefd6": "e42aaae6a4cbfbc9f6326f1fa9e3380c",
".git/objects/88/e2898087bcd3fde19fab0bf30fa1d5487ada1c": "d04b1d79fa58fe0f57cde988100dd3c3",
".git/objects/8a/aa46ac1ae21512746f852a42ba87e4165dfdd1": "1d8820d345e38b30de033aa4b5a23e7b",
".git/objects/a1/3837a12450aceaa5c8e807c32e781831d67a8f": "bfe4910ea01eb3d69e9520c3b42a0adf",
".git/objects/ab/0e98497a51ead7821d1da35a24968ff314e50f": "557c35fe3928eb2af403d1b3926bb9ba",
".git/objects/b7/49bfef07473333cf1dd31e9eed89862a5d52aa": "36b4020dca303986cad10924774fb5dc",
".git/objects/b9/2a0d854da9a8f73216c4a0ef07a0f0a44e4373": "f62d1eb7f51165e2a6d2ef1921f976f3",
".git/objects/bd/2ce610e8c73aaf41aab9b4e46b0b72e8b61818": "be8bc1bd8a10bd235970fd1e80bfe753",
".git/objects/c3/a3d3d3283e2313751080267db96ab2f65e7d0a": "473c5069b097732ecb8993aa4ae46815",
".git/objects/c8/cf347c1904f155e178d071655961cf7b6aa78d": "76b3a3c0d6d43a9039264c14582c35cb",
".git/objects/d6/9c56691fbdb0b7efa65097c7cc1edac12a6d3e": "868ce37a3a78b0606713733248a2f579",
".git/objects/d9/f7704519603ef596272e3938a79695757216be": "54dcaac1d3fbb9d936459fc2c5210d7a",
".git/objects/e1/1d1765787809a183564b86fea9e2bc12d95a77": "d4f9d1879b6e8b3b12cf26af38bf4a2a",
".git/objects/e5/951dfb943474a56e611d9923405cd06c2dd28d": "c6fa51103d8db5478e1a43a661f6c68d",
".git/objects/e9/e575d0b36ebd696294496017834c26b62e1505": "8eca52e53d59927cc7c00a13888ea67b",
".git/objects/eb/9b4d76e525556d5d89141648c724331630325d": "37c0954235cbe27c4d93e74fe9a578ef",
".git/objects/ec/0db9e434ad4338437f7818cfb415742dbd8c09": "30ec235613e5cd056e964152bc305a12",
".git/objects/f0/15ab7fb86cd5c2f8df8a9b866222a9ac343091": "cdfc63ddb25ad28444ff5637ceff393b",
".git/objects/fa/606e8000ba063439785bf49026e16c81997112": "b050a486009b243adb77eef0db12ae1d",
".git/objects/fd/7d3589fbf7c24a999d5022b64cb14a6558d4d3": "4067e14f62037eeb26aa811ceccb5faf",
".git/ORIG_HEAD": "c31ca8181fd97494e09a527925bc7140",
".git/refs/heads/main": "00b81a577abca12e58930d2eeef1a581",
".git/refs/remotes/origin/main": "00b81a577abca12e58930d2eeef1a581",
"assets/AssetManifest.json": "2efbb41d7877d10aac9d091f58ccd7b9",
"assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57",
"assets/fonts/MaterialIcons-Regular.otf": "7e7a6cccddf6d7b20012a548461d5d81",
"assets/NOTICES": "5cb6bf739b281db4964dd64e29762733",
"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "6d342eb68f170c97609e9da345464e5e",
"canvaskit/canvaskit.js": "c2b4e5f3d7a3d82aed024e7249a78487",
"canvaskit/canvaskit.wasm": "4b83d89d9fecbea8ca46f2f760c5a9ba",
"canvaskit/profiling/canvaskit.js": "ae2949af4efc61d28a4a80fffa1db900",
"canvaskit/profiling/canvaskit.wasm": "95e736ab31147d1b2c7b25f11d4c32cd",
"favicon.png": "5dcef449791fa27946b3d35ad8803796",
"icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1",
"icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1",
"icons/Icon-maskable-192.png": "c457ef57daa1d16f64b27b786ec2ea3c",
"icons/Icon-maskable-512.png": "301a7604d45b3e739efc881eb04896ea",
"index.html": "cfe23414bc2ff6f3d11c76bc09e619ca",
"/": "cfe23414bc2ff6f3d11c76bc09e619ca",
"main.dart.js": "42bf866e280381b01d8b18c767bcbf20",
"manifest.json": "c1b66505e59ffe92faec0ecf80c9ce35",
"README.md": "c3e5fa6c48abcecee3f8451a338eeafc",
"usericon.gif": "5d55279e929debbf62e1a2179e2708be",
"version.json": "5c8d0bfaa789266fc903bf674ee5ab71"
};

// The application shell files that are downloaded before a service worker can
// start.
const CORE = [
  "/",
"main.dart.js",
"index.html",
"assets/NOTICES",
"assets/AssetManifest.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)));
        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)));
      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.
        return response || fetch(event.request).then((response) => {
          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;
        });
      });
    })
  );
}