flutter_service_worker.js

'use strict';
const MANIFEST = 'flutter-app-manifest';
const TEMP = 'flutter-temp-cache';
const CACHE_NAME = 'flutter-app-cache';
const RESOURCES = {
<<<<<<< HEAD
  "assets/AssetManifest.json": "fd66863a5c5a10cfe0a7db077db62859",
=======
  "assets/AssetManifest.json": "ea463781111147a55575f87a6947e3d4",
>>>>>>> 446f928263f8a43a5ade2ee926d53aabb15be88f
"assets/assets/Blocks.gif": "a1eb862011300c9dbacc208a8b678e2b",
"assets/assets/fonts/Poppins/Poppins-Black.ttf": "0573b9231a8316427ad6e751b52e87a4",
"assets/assets/fonts/Poppins/Poppins-Bold.ttf": "a3e0b5f427803a187c1b62c5919196aa",
"assets/assets/fonts/Poppins/Poppins-ExtraBold.ttf": "544fa4f2678a8285eb88b8dfe503c90c",
"assets/assets/fonts/Poppins/Poppins-Medium.ttf": "f61a4eb27371b7453bf5b12ab3648b9e",
"assets/assets/fonts/Poppins/Poppins-Regular.ttf": "8b6af8e5e8324edfd77af8b3b35d7f9c",
"assets/assets/fonts/Poppins/Poppins-SemiBold.ttf": "4cdacb8f89d588d69e8570edcbe49507",
"assets/assets/images/contact.png": "b655fdb88b3f44a8528016fd718b6a6a",
"assets/assets/images/flutter-splash-orignal.gif": "c0010916edd9bf72b96c8e68e1d0f1b7",
"assets/assets/images/flutter-splash.gif": "f922d0b28831a6689e416e337fed2999",
"assets/assets/images/hero-background-mobile.png": "c8f56e1609feb06b03c1fa250d0fa5eb",
"assets/assets/images/hero-background.png": "cdf11bca0e33c732a18f5be1f8aa4fb7",
"assets/assets/images/join-us.png": "85be39c35d5abc165c7f7d5eba4885a3",
"assets/assets/images/what-we-do.png": "b7914f349007d7dc6c1da0a656db71bf",
"assets/assets/Website%2520-%2520Reference.png": "87970587dc0d7f3d91a89754a3348730",
"assets/FontManifest.json": "abad732e8e807281f8deb9a7760f1adc",
"assets/fonts/MaterialIcons-Regular.otf": "1288c9e28052e028aba623321f7826ac",
<<<<<<< HEAD
"assets/NOTICES": "cb215ae738258fd02fb2940e74e8ae52",
=======
"assets/NOTICES": "f2afc5ff43f0b0fbe8eb4c0badd08942",
>>>>>>> 446f928263f8a43a5ade2ee926d53aabb15be88f
"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "115e937bb829a890521f72d2e664b632",
"favicon.ico": "3d5adcbedb96774ae754749222c02ce0",
"icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1",
"icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1",
"icons/logo-192.png": "2180c2ede707e085b3008587fc941042",
"icons/logo-512.png": "c027678118d8e16a8731a76aa7a4d77f",
"icons/logo.png": "e0b45cda49276532eb3914e3bc0df56d",
"icons/logo.svg": "671c822361af0adbf51c3e898f67032a",
"index.html": "e979c141235f3c1c43d79eff64a55ca9",
"/": "e979c141235f3c1c43d79eff64a55ca9",
<<<<<<< HEAD
"main.dart.js": "64b6ae7d291ceb67783978c8d535bd93",
=======
"main.dart.js": "e460ad98a8509b345f2232bd6ea17a00",
>>>>>>> 446f928263f8a43a5ade2ee926d53aabb15be88f
"manifest.json": "c2ae19221d674291cb06709c8f446ec0",
"splash.mp4": "daaa9efd6560e67a2aee925cb1213c69",
"splash.webm": "2e7cae510a88d32c57b131007dc4c5d4",
"styles.css": "f79bc14c344c0b2e5791b8c0abc75157",
"version.json": "aba5d29d9ab7de3ec07bdd70f3b0a467"
};

// 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 + '?revision=' + RESOURCES[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 in 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;
        });
      });
    })
  );
}