├── src
    ├── icon.png
    ├── index.css
    ├── index.js
    ├── App.js
    ├── push-notification.js
    ├── App.css
    └── registerServiceWorker.js
├── public
    ├── icon.png
    ├── favicon.ico
    ├── firebase-messaging-sw.js
    ├── manifest.json
    └── index.html
├── .gitignore
├── README.md
└── package.json


/src/icon.png:
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https://raw.githubusercontent.com/Leocardoso94/push-notification-demo/HEAD/src/icon.png


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/src/index.css:
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1 | body {
2 |   margin: 0;
3 |   padding: 0;
4 |   font-family: sans-serif;
5 | }
6 | 


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/public/icon.png:
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https://raw.githubusercontent.com/Leocardoso94/push-notification-demo/HEAD/public/icon.png


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/public/favicon.ico:
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https://raw.githubusercontent.com/Leocardoso94/push-notification-demo/HEAD/public/favicon.ico


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/public/firebase-messaging-sw.js:
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1 | importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-app.js');
2 | importScripts('https://www.gstatic.com/firebasejs/4.8.1/firebase-messaging.js');
3 | 
4 | firebase.initializeApp({
5 |     messagingSenderId: 'your messagingSenderId' // troque pelo seu sender id 
6 | });
7 | 
8 | const messaging = firebase.messaging();


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/src/index.js:
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 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom';
 3 | import './index.css';
 4 | import App from './App';
 5 | import registerServiceWorker from './registerServiceWorker';
 6 | import { initializeFirebase } from './push-notification';
 7 | 
 8 | ReactDOM.render(<App />, document.getElementById('root'));
 9 | registerServiceWorker();
10 | initializeFirebase(); 


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/.gitignore:
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 1 | # See https://help.github.com/ignore-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | 
 6 | # testing
 7 | /coverage
 8 | 
 9 | # production
10 | /build
11 | 
12 | # misc
13 | .DS_Store
14 | .env.local
15 | .env.development.local
16 | .env.test.local
17 | .env.production.local
18 | 
19 | npm-debug.log*
20 | yarn-debug.log*
21 | yarn-error.log*
22 | 


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/public/manifest.json:
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 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     }
10 |   ],
11 |   "start_url": "./index.html",
12 |   "display": "standalone",
13 |   "theme_color": "#000000",
14 |   "background_color": "#ffffff"
15 | }
16 | 


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/README.md:
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 1 | # Push Notification Demo
 2 | https://leocardoso94.github.io/push-notification-demo/
 3 | 
 4 | Repository to show how to receive notifications with firebase.
 5 | 
 6 | For more information see the articles:
 7 | 
 8 | English version: https://medium.freecodecamp.org/how-to-add-push-notifications-to-a-web-app-with-firebase-528a702e13e1
 9 | 
10 | Portuguese version: https://medium.com/trainingcenter/adicionando-push-notifications-a-um-web-app-com-firebase-2a20cf12b6fe
11 | 


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/src/App.js:
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 1 | import React from 'react';
 2 | import icon from './icon.png';
 3 | import './App.css';
 4 | import { askForPermissioToReceiveNotifications } from './push-notification';
 5 | 
 6 | const App = () => (
 7 |   <div className="App">
 8 |     <header className="App-header">
 9 |       <img src={icon} className="App-logo" alt="icon" />
10 |       <h1 className="App-title">Welcome to the push-notification demo !</h1>
11 |     </header>
12 |     <button onClick={askForPermissioToReceiveNotifications} >
13 |       Click here to receive notifications
14 |     </button>
15 |   </div>
16 | );
17 | 
18 | export default App;
19 | 


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/src/push-notification.js:
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 1 | import firebase from 'firebase';
 2 | 
 3 | export const initializeFirebase = () => {
 4 |   firebase.initializeApp({
 5 |     messagingSenderId: 'your messagingSenderId' // troque pelo seu sender id 
 6 |   });
 7 | 
 8 |   // use other service worker
 9 |   // navigator.serviceWorker
10 |   //   .register('/my-sw.js')
11 |   //   .then((registration) => {
12 |   //     firebase.messaging().useServiceWorker(registration);
13 |   //   });
14 | }
15 | 
16 | export const askForPermissioToReceiveNotifications = async () => {
17 |   try {
18 | 
19 |     const messaging = firebase.messaging();
20 | 
21 |     await messaging.requestPermission();
22 |     const token = await messaging.getToken();
23 |     console.log('user token: ', token);
24 | 
25 |     return token;
26 |   } catch (error) {
27 |     console.error(error);
28 |   }
29 | }
30 | 


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/src/App.css:
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 1 | .App {
 2 |   text-align: center;
 3 | }
 4 | 
 5 | .App-logo {
 6 |   animation: App-logo-spin infinite 5s linear;
 7 |   height: 80px;
 8 | }
 9 | 
10 | .App-header {
11 |   background-color: #222;
12 |   height: 150px;
13 |   padding: 20px;
14 |   color: white;
15 | }
16 | 
17 | .App-title {
18 |   font-size: 1.5em;
19 | }
20 | 
21 | .App-intro {
22 |   font-size: large;
23 | }
24 | 
25 | @keyframes App-logo-spin {
26 |   from { transform: rotate(0deg); }
27 |   to { transform: rotate(360deg); }
28 | }
29 | 
30 | button {
31 |   margin-top: 20px;
32 |   border-radius:  100px;
33 |   border: 0;
34 |   padding: 15px;
35 |   font-size: 18px;
36 |   cursor: pointer;
37 |   background-color: #222;
38 |   color: #fff;
39 |   transition: .3s ease-in-out;
40 | }
41 | 
42 | button:hover {
43 |   background-color: #fff;
44 |   color: #222;
45 |   border: 2px solid #222;
46 | }


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/package.json:
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 1 | {
 2 |   "name": "push-notifications-demo",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "firebase": "^5.0.4",
 7 |     "react": "^16.4.0",
 8 |     "react-dom": "^16.4.0",
 9 |     "react-scripts": "1.1.4"
10 |   },
11 |   "scripts": {
12 |     "start": "react-scripts start",
13 |     "build": "react-scripts build",
14 |     "test": "react-scripts test --env=jsdom",
15 |     "eject": "react-scripts eject",
16 |     "predeploy": "npm run build",
17 |     "deploy": "gh-pages -d build"
18 |   },
19 |   "main": "index.js",
20 |   "repository": "https://github.com/Leocardoso94/push-notification-demo.git",
21 |   "author": "Leonardo Cardoso <leocardosoti@gmail.com>",
22 |   "homepage": "https://leocardoso94.github.io/push-notification-demo",
23 |   "license": "MIT",
24 |   "devDependencies": {
25 |     "gh-pages": "^1.2.0"
26 |   }
27 | }
28 | 


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/public/index.html:
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 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 6 |     <meta name="theme-color" content="#000000">
 7 |     <!--
 8 |       manifest.json provides metadata used when your web app is added to the
 9 |       homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
10 |     -->
11 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
12 |     <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
13 |     <!--
14 |       Notice the use of %PUBLIC_URL% in the tags above.
15 |       It will be replaced with the URL of the `public` folder during the build.
16 |       Only files inside the `public` folder can be referenced from the HTML.
17 | 
18 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
19 |       work correctly both with client-side routing and a non-root public URL.
20 |       Learn how to configure a non-root public URL by running `npm run build`.
21 |     -->
22 |     <title>Push notification demo</title>
23 |   </head>
24 |   <body>
25 |     <noscript>
26 |       You need to enable JavaScript to run this app.
27 |     </noscript>
28 |     <div id="root"></div>
29 |     <!--
30 |       This HTML file is a template.
31 |       If you open it directly in the browser, you will see an empty page.
32 | 
33 |       You can add webfonts, meta tags, or analytics to this file.
34 |       The build step will place the bundled scripts into the <body> tag.
35 | 
36 |       To begin the development, run `npm start` or `yarn start`.
37 |       To create a production bundle, use `npm run build` or `yarn build`.
38 |     -->
39 |   </body>
40 | </html>
41 | 


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/src/registerServiceWorker.js:
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  1 | // In production, we register a service worker to serve assets from local cache.
  2 | 
  3 | // This lets the app load faster on subsequent visits in production, and gives
  4 | // it offline capabilities. However, it also means that developers (and users)
  5 | // will only see deployed updates on the "N+1" visit to a page, since previously
  6 | // cached resources are updated in the background.
  7 | 
  8 | // To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
  9 | // This link also includes instructions on opting out of this behavior.
 10 | 
 11 | const isLocalhost = Boolean(
 12 |   window.location.hostname === 'localhost' ||
 13 |     // [::1] is the IPv6 localhost address.
 14 |     window.location.hostname === '[::1]' ||
 15 |     // 127.0.0.1/8 is considered localhost for IPv4.
 16 |     window.location.hostname.match(
 17 |       /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
 18 |     )
 19 | );
 20 | 
 21 | export default function register() {
 22 |   if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
 23 |     // The URL constructor is available in all browsers that support SW.
 24 |     const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
 25 |     if (publicUrl.origin !== window.location.origin) {
 26 |       // Our service worker won't work if PUBLIC_URL is on a different origin
 27 |       // from what our page is served on. This might happen if a CDN is used to
 28 |       // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
 29 |       return;
 30 |     }
 31 | 
 32 |     window.addEventListener('load', () => {
 33 |       const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 34 | 
 35 |       if (isLocalhost) {
 36 |         // This is running on localhost. Lets check if a service worker still exists or not.
 37 |         checkValidServiceWorker(swUrl);
 38 | 
 39 |         // Add some additional logging to localhost, pointing developers to the
 40 |         // service worker/PWA documentation.
 41 |         navigator.serviceWorker.ready.then(() => {
 42 |           console.log(
 43 |             'This web app is being served cache-first by a service ' +
 44 |               'worker. To learn more, visit https://goo.gl/SC7cgQ'
 45 |           );
 46 |         });
 47 |       } else {
 48 |         // Is not local host. Just register service worker
 49 |         registerValidSW(swUrl);
 50 |       }
 51 |     });
 52 |   }
 53 | }
 54 | 
 55 | function registerValidSW(swUrl) {
 56 |   navigator.serviceWorker
 57 |     .register(swUrl)
 58 |     .then(registration => {
 59 |       registration.onupdatefound = () => {
 60 |         const installingWorker = registration.installing;
 61 |         installingWorker.onstatechange = () => {
 62 |           if (installingWorker.state === 'installed') {
 63 |             if (navigator.serviceWorker.controller) {
 64 |               // At this point, the old content will have been purged and
 65 |               // the fresh content will have been added to the cache.
 66 |               // It's the perfect time to display a "New content is
 67 |               // available; please refresh." message in your web app.
 68 |               console.log('New content is available; please refresh.');
 69 |             } else {
 70 |               // At this point, everything has been precached.
 71 |               // It's the perfect time to display a
 72 |               // "Content is cached for offline use." message.
 73 |               console.log('Content is cached for offline use.');
 74 |             }
 75 |           }
 76 |         };
 77 |       };
 78 |     })
 79 |     .catch(error => {
 80 |       console.error('Error during service worker registration:', error);
 81 |     });
 82 | }
 83 | 
 84 | function checkValidServiceWorker(swUrl) {
 85 |   // Check if the service worker can be found. If it can't reload the page.
 86 |   fetch(swUrl)
 87 |     .then(response => {
 88 |       // Ensure service worker exists, and that we really are getting a JS file.
 89 |       if (
 90 |         response.status === 404 ||
 91 |         response.headers.get('content-type').indexOf('javascript') === -1
 92 |       ) {
 93 |         // No service worker found. Probably a different app. Reload the page.
 94 |         navigator.serviceWorker.ready.then(registration => {
 95 |           registration.unregister().then(() => {
 96 |             window.location.reload();
 97 |           });
 98 |         });
 99 |       } else {
100 |         // Service worker found. Proceed as normal.
101 |         registerValidSW(swUrl);
102 |       }
103 |     })
104 |     .catch(() => {
105 |       console.log(
106 |         'No internet connection found. App is running in offline mode.'
107 |       );
108 |     });
109 | }
110 | 
111 | export function unregister() {
112 |   if ('serviceWorker' in navigator) {
113 |     navigator.serviceWorker.ready.then(registration => {
114 |       registration.unregister();
115 |     });
116 |   }
117 | }
118 | 


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