'use strict';
const MANIFEST = 'flutter-app-manifest';
const TEMP = 'flutter-temp-cache';
const CACHE_NAME = 'flutter-app-cache';
const RESOURCES = {
  "assets/AssetManifest.json": "d9150da08bcab79647bb00a0700488d6",
"assets/NOTICES": "d36d0f0303107cc04222d90bcf6c3902",
"assets/packages/window_manager/images/ic_chrome_minimize.png": "4282cd84cb36edf2efb950ad9269ca62",
"assets/packages/window_manager/images/ic_chrome_maximize.png": "af7499d7657c8b69d23b85156b60298c",
"assets/packages/window_manager/images/ic_chrome_close.png": "75f4b8ab3608a05461a31fc18d6b47c2",
"assets/packages/window_manager/images/ic_chrome_unmaximize.png": "4a90c1909cb74e8f0d35794e2f61d8bf",
"assets/FontManifest.json": "7b2a36307916a9721811788013e65289",
"assets/fonts/MaterialIcons-Regular.otf": "e7069dfd19b331be16bed984668fe080",
"favicon.png": "302ac04c14db027d016d1fe74c6a80a0",
"manifest.json": "7909dae66a9203092dc86b5a6162e79c",
"flutter.js": "1cfe996e845b3a8a33f57607e8b09ee4",
"main.dart.js": "7b37eda4ec51c839c0d91405e9313c4e",
"version.json": "3fea9d9c7b4ca6955aa03e762e0d2e13",
"icons/apple-touch-icon-192.png": "8cf0d5162941f467a77f023c414a1812",
"icons/icon-maskable-512.png": "aa798e6d780ff109da17c3a98d5f2619",
"icons/loading-animation.png": "41a96047dbd2463a50c46ad3bf6ff158",
"icons/icon-192.png": "81c4311263d0cad60c1f0496b4fa7c8f",
"icons/icon-maskable-192.png": "c1c2210feeb444cf800a5ce0d06eff16",
"icons/icon-512.png": "06b219f171b5a1af6dd8299ea1e116f2",
"python.js": "9eee2c1773af78bc45ee89ca2ac5724f",
"canvaskit/canvaskit.wasm": "3de12d898ec208a5f31362cc00f09b9e",
"canvaskit/canvaskit.js": "97937cb4c2c2073c968525a3e08c86a3",
"canvaskit/profiling/canvaskit.wasm": "371bc4e204443b0d5e774d64a046eb99",
"canvaskit/profiling/canvaskit.js": "c21852696bc1cc82e8894d851c01921a",
"python-worker.js": "584b1348a0892f13129c9c5f8d93b4ad",
"index.html": "a81454cb063a6c2279128747bb00ef4b",
"/": "a81454cb063a6c2279128747bb00ef4b"
};

// 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)));
        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 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;
        });
      });
    })
  );
}
