"use strict"; // https://github.com/palantir/tslint/issues/144

/* tslint:disable */
// tslint:disable:no-console
// In production, we register a service worker to serve assets from local cache.

Object.defineProperty(exports, "__esModule", {
  value: true
}); // This lets the app load faster on subsequent visits in production, and gives
// it offline capabilities. However, it also means that developers (and users)
// will only see deployed updates on the 'N+1' visit to a page, since previously
// cached resources are updated in the background.
// To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
// This link also includes instructions on opting out of this behavior.

const isLocalhost = Boolean(window.location.hostname === 'localhost' || // [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' || // 127.0.0.1/8 is considered localhost for IPv4.
window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/));

function register() {
  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
    // The URL constructor is available in all browsers that support SW.
    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.toString());

    if (publicUrl.origin !== window.location.origin) {
      // Our service worker won't work if PUBLIC_URL is on a different origin
      // from what our page is served on. This might happen if a CDN is used to
      // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
      return;
    }

    window.addEventListener('load', () => {
      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;

      if (!isLocalhost) {
        // Is not local host. Just register service worker
        registerValidSW(swUrl);
      } else {
        // This is running on localhost. Lets check if a service worker still exists or not.
        checkValidServiceWorker(swUrl);
      }
    });
  }
}

exports.default = register;

function registerValidSW(swUrl) {
  navigator.serviceWorker.register(swUrl).then(registration => {
    registration.onupdatefound = () => {
      const installingWorker = registration.installing;

      if (installingWorker) {
        installingWorker.onstatechange = () => {
          if (installingWorker.state === 'installed') {
            if (navigator.serviceWorker.controller) {
              // At this point, the old content will have been purged and
              // the fresh content will have been added to the cache.
              // It's the perfect time to display a 'New content is
              // available; please refresh.' message in your web app.
              console.log('New content is available; please refresh.');
            } else {
              // At this point, everything has been precached.
              // It's the perfect time to display a
              // 'Content is cached for offline use.' message.
              console.log('Content is cached for offline use.');
            }
          }
        };
      }
    };
  }).catch(error => {
    console.error('Error during service worker registration:', error);
  });
}

function checkValidServiceWorker(swUrl) {
  // Check if the service worker can be found. If it can't reload the page.
  fetch(swUrl).then(response => {
    // Ensure service worker exists, and that we really are getting a JS file.
    if (response.status === 404 || response.headers.get('content-type').indexOf('javascript') === -1) {
      // No service worker found. Probably a different app. Reload the page.
      navigator.serviceWorker.ready.then(registration => {
        registration.unregister().then(() => {
          window.location.reload();
        });
      });
    } else {
      // Service worker found. Proceed as normal.
      registerValidSW(swUrl);
    }
  }).catch(() => {
    console.log('No internet connection found. App is running in offline mode.');
  });
}

function unregister() {
  if ('serviceWorker' in navigator) {
    navigator.serviceWorker.ready.then(registration => {
      registration.unregister();
    });
  }
}

exports.unregister = unregister; //# sourceMappingURL=registerServiceWorker.js.map