├── .editorconfig
├── .gitignore
├── README.md
├── package-lock.json
├── package.json
├── public
├── favicon.ico
├── index.html
└── manifest.json
└── src
├── App.js
├── Auth.js
├── index.css
├── index.js
└── serviceWorker.js
/.editorconfig:
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1 | # Editor configuration, see http://editorconfig.org
2 | root = true
3 |
4 | [*]
5 | charset = utf-8
6 | indent_style = space
7 | indent_size = 2
8 | insert_final_newline = true
9 | trim_trailing_whitespace = true
10 |
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/.gitignore:
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1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
2 |
3 | # dependencies
4 | /node_modules
5 | /.pnp
6 | .pnp.js
7 |
8 | # testing
9 | /coverage
10 |
11 | # production
12 | /build
13 |
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 |
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 |
25 | # webstorm files
26 | .idea/
27 |
28 | .env
29 |
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/README.md:
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1 | # Handling Authentication in React with Context and Hooks
2 |
3 | Identity management in React can be quite confusing because there are multiple ways you can handle the user sessions in your application. This tutorial will show how you can handle identity management in React by creating a global state for your authentication details with Context and update these details with Hooks.
4 |
5 | Read more at: https://auth0.com/blog/handling-authentication-in-react-with–context-and-hooks/
6 |
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/package.json:
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1 | {
2 | "name": "react-hooks-context-auth0",
3 | "version": "0.1.0",
4 | "private": true,
5 | "dependencies": {
6 | "auth0-js": "^9.10.2",
7 | "dotenv": "^8.0.0",
8 | "husky": "^2.2.0",
9 | "lint-staged": "^8.1.6",
10 | "prettier": "^1.17.0",
11 | "react": "^16.8.6",
12 | "react-dom": "^16.8.6",
13 | "react-scripts": "3.0.1"
14 | },
15 | "scripts": {
16 | "start": "react-scripts start",
17 | "build": "react-scripts build",
18 | "test": "react-scripts test",
19 | "eject": "react-scripts eject"
20 | },
21 | "eslintConfig": {
22 | "extends": "react-app"
23 | },
24 | "browserslist": {
25 | "production": [
26 | ">0.2%",
27 | "not dead",
28 | "not op_mini all"
29 | ],
30 | "development": [
31 | "last 1 chrome version",
32 | "last 1 firefox version",
33 | "last 1 safari version"
34 | ]
35 | },
36 | "husky": {
37 | "hooks": {
38 | "pre-commit": "lint-staged"
39 | }
40 | },
41 | "lint-staged": {
42 | "src/**/*.{js,jsx,ts,tsx,json,css,scss,md}": [
43 | "prettier --single-quote --write",
44 | "git add"
45 | ]
46 | },
47 | "prettier": {
48 | "singleQuote": true
49 | }
50 | }
51 |
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/public/favicon.ico:
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https://raw.githubusercontent.com/auth0-blog/auth0-hooks-context/c3d3a91edbb09c90f3eb0103d94c4f40d89d5cbf/public/favicon.ico
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/public/index.html:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
12 |
13 |
22 | React App
23 |
24 |
25 |
26 |
27 |
37 |
38 |
39 |
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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": ".",
12 | "display": "standalone",
13 | "theme_color": "#000000",
14 | "background_color": "#ffffff"
15 | }
16 |
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/src/App.js:
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1 | import React from 'react';
2 | import Auth from './Auth';
3 |
4 | const auth = new Auth();
5 | const MeetupContext = React.createContext();
6 | const UserContext = React.createContext();
7 |
8 | const initialState = {
9 | meetup: {
10 | title: 'Auth0 Online Meetup',
11 | date: Date(),
12 | attendees: ['Bob', 'Jessy', 'Christina', 'Adam']
13 | },
14 | user: {
15 | name: 'Roy'
16 | }
17 | };
18 |
19 | const reducer = (state, action) => {
20 | switch (action.type) {
21 | case 'subscribeUser':
22 | return {
23 | ...state,
24 | attendees: [...state.attendees, action.payload],
25 | subscribed: true
26 | };
27 | case 'unSubscribeUser':
28 | return {
29 | ...state,
30 | attendees: state.attendees.filter(
31 | attendee => attendee !== action.payload
32 | ),
33 | subscribed: false
34 | };
35 | case 'loginUser':
36 | return {
37 | ...state,
38 | isAuthenticated: action.payload.authenticated,
39 | name: action.payload.user.name
40 | };
41 | default:
42 | return state;
43 | }
44 | };
45 |
46 | const UserContextProvider = props => {
47 | const [state, dispatch] = React.useReducer(reducer, initialState.user);
48 | auth.handleAuthentication().then(() => {
49 | dispatch({
50 | type: 'loginUser',
51 | payload: {
52 | authenticated: true,
53 | user: auth.getProfile()
54 | }
55 | });
56 | });
57 | return (
58 |
64 | {props.children}
65 |
66 | );
67 | };
68 |
69 | const MeetupContextProvider = ({ user, ...props }) => {
70 | const [state, dispatch] = React.useReducer(reducer, initialState.meetup);
71 | return (
72 |
76 | dispatch({ type: 'subscribeUser', payload: user.name }),
77 | handleUnSubscribe: () =>
78 | dispatch({ type: 'unSubscribeUser', payload: user.name })
79 | }}
80 | >
81 | {props.children}
82 |
83 | );
84 | };
85 |
86 | const App = () => (
87 |
88 |
89 | {user => (
90 |
91 |
92 | {meetup => (
93 |
94 |
{meetup.title}
95 |
{meetup.date}
96 |
97 |
{`Attendees (${meetup.attendees.length})`}
98 | {meetup.attendees.map(attendant => (
99 |
{attendant}
100 | ))}
101 |
102 | {user.isAuthenticated ? (
103 | !meetup.subscribed ? (
104 |
107 | ) : (
108 |
111 | )
112 | ) : (
113 |
114 | )}
115 |
116 |
117 |
118 | )}
119 |
120 |
121 | )}
122 |
123 |
124 | );
125 |
126 | export default App;
127 |
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/src/Auth.js:
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1 | import auth0 from 'auth0-js';
2 |
3 | export default class Auth {
4 | constructor() {
5 | this.auth0 = new auth0.WebAuth({
6 | domain: process.env.REACT_APP_AUTH0_DOMAIN,
7 | audience: `https://${process.env.REACT_APP_AUTH0_DOMAIN}/userinfo`,
8 | clientID: process.env.REACT_APP_AUTH0_CLIENT_ID,
9 | redirectUri: 'http://localhost:3000/?callback',
10 | responseType: 'id_token',
11 | scope: 'openid profile'
12 | });
13 |
14 | this.handleAuthentication = this.handleAuthentication.bind(this);
15 | this.signIn = this.signIn.bind(this);
16 | }
17 |
18 | signIn() {
19 | this.auth0.authorize();
20 | }
21 |
22 | getProfile() {
23 | return this.profile;
24 | }
25 |
26 | handleAuthentication() {
27 | return new Promise((resolve, reject) => {
28 | this.auth0.parseHash((err, authResult) => {
29 | if (err) return reject(err);
30 | if (!authResult || !authResult.idToken) {
31 | return reject(err);
32 | }
33 |
34 | this.idToken = authResult.idToken;
35 | this.profile = authResult.idTokenPayload;
36 | // set the time that the id token will expire at
37 | this.expiresAt = authResult.idTokenPayload.exp * 1000;
38 | resolve();
39 | });
40 | });
41 | }
42 | }
43 |
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/src/index.css:
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1 | body {
2 | margin: 0;
3 | font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
4 | "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
5 | sans-serif;
6 | -webkit-font-smoothing: antialiased;
7 | -moz-osx-font-smoothing: grayscale;
8 | }
9 |
10 | code {
11 | font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New",
12 | monospace;
13 | }
14 |
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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 * as serviceWorker from './serviceWorker';
6 |
7 | ReactDOM.render(, document.getElementById('root'));
8 |
9 | // If you want your app to work offline and load faster, you can change
10 | // unregister() to register() below. Note this comes with some pitfalls.
11 | // Learn more about service workers: https://bit.ly/CRA-PWA
12 | serviceWorker.unregister();
13 |
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/src/serviceWorker.js:
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1 | // This optional code is used to register a service worker.
2 | // register() is not called by default.
3 |
4 | // This lets the app load faster on subsequent visits in production, and gives
5 | // it offline capabilities. However, it also means that developers (and users)
6 | // will only see deployed updates on subsequent visits to a page, after all the
7 | // existing tabs open on the page have been closed, since previously cached
8 | // resources are updated in the background.
9 |
10 | // To learn more about the benefits of this model and instructions on how to
11 | // opt-in, read https://bit.ly/CRA-PWA
12 |
13 | const isLocalhost = Boolean(
14 | window.location.hostname === 'localhost' ||
15 | // [::1] is the IPv6 localhost address.
16 | window.location.hostname === '[::1]' ||
17 | // 127.0.0.1/8 is considered localhost for IPv4.
18 | window.location.hostname.match(
19 | /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
20 | )
21 | );
22 |
23 | export function register(config) {
24 | if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
25 | // The URL constructor is available in all browsers that support SW.
26 | const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
27 | if (publicUrl.origin !== window.location.origin) {
28 | // Our service worker won't work if PUBLIC_URL is on a different origin
29 | // from what our page is served on. This might happen if a CDN is used to
30 | // serve assets; see https://github.com/facebook/create-react-app/issues/2374
31 | return;
32 | }
33 |
34 | window.addEventListener('load', () => {
35 | const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
36 |
37 | if (isLocalhost) {
38 | // This is running on localhost. Let's check if a service worker still exists or not.
39 | checkValidServiceWorker(swUrl, config);
40 |
41 | // Add some additional logging to localhost, pointing developers to the
42 | // service worker/PWA documentation.
43 | navigator.serviceWorker.ready.then(() => {
44 | console.log(
45 | 'This web app is being served cache-first by a service ' +
46 | 'worker. To learn more, visit https://bit.ly/CRA-PWA'
47 | );
48 | });
49 | } else {
50 | // Is not localhost. Just register service worker
51 | registerValidSW(swUrl, config);
52 | }
53 | });
54 | }
55 | }
56 |
57 | function registerValidSW(swUrl, config) {
58 | navigator.serviceWorker
59 | .register(swUrl)
60 | .then(registration => {
61 | registration.onupdatefound = () => {
62 | const installingWorker = registration.installing;
63 | if (installingWorker == null) {
64 | return;
65 | }
66 | installingWorker.onstatechange = () => {
67 | if (installingWorker.state === 'installed') {
68 | if (navigator.serviceWorker.controller) {
69 | // At this point, the updated precached content has been fetched,
70 | // but the previous service worker will still serve the older
71 | // content until all client tabs are closed.
72 | console.log(
73 | 'New content is available and will be used when all ' +
74 | 'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
75 | );
76 |
77 | // Execute callback
78 | if (config && config.onUpdate) {
79 | config.onUpdate(registration);
80 | }
81 | } else {
82 | // At this point, everything has been precached.
83 | // It's the perfect time to display a
84 | // "Content is cached for offline use." message.
85 | console.log('Content is cached for offline use.');
86 |
87 | // Execute callback
88 | if (config && config.onSuccess) {
89 | config.onSuccess(registration);
90 | }
91 | }
92 | }
93 | };
94 | };
95 | })
96 | .catch(error => {
97 | console.error('Error during service worker registration:', error);
98 | });
99 | }
100 |
101 | function checkValidServiceWorker(swUrl, config) {
102 | // Check if the service worker can be found. If it can't reload the page.
103 | fetch(swUrl)
104 | .then(response => {
105 | // Ensure service worker exists, and that we really are getting a JS file.
106 | const contentType = response.headers.get('content-type');
107 | if (
108 | response.status === 404 ||
109 | (contentType != null && contentType.indexOf('javascript') === -1)
110 | ) {
111 | // No service worker found. Probably a different app. Reload the page.
112 | navigator.serviceWorker.ready.then(registration => {
113 | registration.unregister().then(() => {
114 | window.location.reload();
115 | });
116 | });
117 | } else {
118 | // Service worker found. Proceed as normal.
119 | registerValidSW(swUrl, config);
120 | }
121 | })
122 | .catch(() => {
123 | console.log(
124 | 'No internet connection found. App is running in offline mode.'
125 | );
126 | });
127 | }
128 |
129 | export function unregister() {
130 | if ('serviceWorker' in navigator) {
131 | navigator.serviceWorker.ready.then(registration => {
132 | registration.unregister();
133 | });
134 | }
135 | }
136 |
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