flutter_service_worker.js

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

const RESOURCES = {"assets/assets/donate.png": "5eb9b78f6ff8302e60c24b14a8886b98",
"assets/assets/homepage.png": "0d15d2fd23541289657bfb6701e87aa6",
"assets/assets/localizationbanner.png": "9d581599211a18c8ffa29e7e195672f2",
"assets/assets/language.png": "5d503a5731b1ffd44ab481f684501e5d",
"assets/assets/file.json": "ba30ff56aceffeef043e9e6bd66345c4",
"assets/assets/localize.png": "7d0868b79c6179050017bd361dc33dbe",
"assets/assets/json.png": "cdd8a92d006717e902e4755cff5d217b",
"assets/assets/xmlIcon.png": "8666a7fe2febe28e7e817faace3d01cc",
"assets/assets/upload.png": "5fe84811ed073a26647f746f4485568c",
"assets/assets/download.png": "67ca1831bad2d169da2fc8561bb13d67",
"assets/assets/localized.png": "a486e686a3c8217851870a3d885f5a91",
"assets/assets/worldlocalized.png": "35d994fa21f174c3fa7a58f7fee8bbcb",
"assets/assets/Lcalization.png": "ad289916e624b2ad3e61b69297689d4c",
"assets/assets/jsonIcon.png": "df77d2f61d446287fb7e84723826fafa",
"assets/AssetManifest.bin": "7db30dc504fe74079c1de10eb23ca62f",
"assets/AssetManifest.json": "3099c1184a3d5b7df7f9fe1c5bd78323",
"assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57",
"assets/fonts/MaterialIcons-Regular.otf": "dab5be1463af81f07fc074a7e8467221",
"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "89ed8f4e49bcdfc0b5bfc9b24591e347",
"assets/packages/flutter_inappwebview/assets/t_rex_runner/t-rex.html": "16911fcc170c8af1c5457940bd0bf055",
"assets/packages/flutter_inappwebview/assets/t_rex_runner/t-rex.css": "5a8d0222407e388155d7d1395a75d5b9",
"assets/packages/youtube_player_iframe/assets/player.html": "dc7a0426386dc6fd0e4187079900aea8",
"assets/packages/fluttertoast/assets/toastify.js": "56e2c9cedd97f10e7e5f1cebd85d53e3",
"assets/packages/fluttertoast/assets/toastify.css": "a85675050054f179444bc5ad70ffc635",
"assets/NOTICES": "60f374cbd7f975e6c926d0e4ea2e8162",
"assets/shaders/ink_sparkle.frag": "f8b80e740d33eb157090be4e995febdf",
"flutter.js": "6fef97aeca90b426343ba6c5c9dc5d4a",
"index.html": "777d12d2cd5dfadb90088770a0a7cc47",
"/": "777d12d2cd5dfadb90088770a0a7cc47",
"localizeJson.png": "5544b8a07d117a05bff203a3d8faf0bb",
"favicon.png": "83a280d361de19785a534146385992bc",
"manifest.json": "64678b41222e8c50f1bc3a396e78a936",
"main.dart.js": "d6c71bc90c4a6a21164a33f39ab6cce1",
"icons/Icon-maskable-512.png": "99478dc1a466e377127ea8a5c899d39d",
"icons/Icon-512.png": "99478dc1a466e377127ea8a5c899d39d",
"icons/Icon-192.png": "e185c32186263446ef3c010899189ee9",
"icons/Icon-maskable-192.png": "e185c32186263446ef3c010899189ee9",
"canvaskit/skwasm.worker.js": "51253d3321b11ddb8d73fa8aa87d3b15",
"canvaskit/canvaskit.wasm": "42df12e09ecc0d5a4a34a69d7ee44314",
"canvaskit/skwasm.wasm": "1a074e8452fe5e0d02b112e22cdcf455",
"canvaskit/chromium/canvaskit.wasm": "be0e3b33510f5b7b0cc76cc4d3e50048",
"canvaskit/chromium/canvaskit.js": "96ae916cd2d1b7320fff853ee22aebb0",
"canvaskit/skwasm.js": "95f16c6690f955a45b2317496983dbe9",
"canvaskit/canvaskit.js": "bbf39143dfd758d8d847453b120c8ebb",
"favicon.ico": "366046cadcbec5a5a93787b5ed99a1cc",
"version.json": "38bc26489a6322e031d9186151c9d5be"};
// The application shell files that are downloaded before a service worker can
// start.
const CORE = ["main.dart.js",
"index.html",
"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)));
        // 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;
        });
      });
    })
  );
}