How to authenticate firebase with GitHub in ReactJS ?

Last Updated : 08 Apr, 2021

The following approach covers how to authenticate firebase with GitHub in react. We have used the firebase module to achieve so.

Creating React Application And Installing Module:

Step 1: Create a React app using the following command:

npx create-react-app gfgapp

Step 2: After creating your project folder i.e. gfgapp, move to it using the following command:

cd gfgapp

Project structure: Our project structure will look like this.

Step 3: After creating the ReactJS application, Install the firebase module using the following command:

npm install firebase@8.3.1 --save

Step 4: Go to your firebase dashboard and create a new project and copy your credentials.

const firebaseConfig = {
      apiKey: "your api key",
      authDomain: "your credentials",
      projectId: "your credentials",
      storageBucket: "your credentials",
      messagingSenderId: "your credentials",
      appId: "your credentials"
};

Step 5: Initialize the Firebase into your project by creating Firebase.js file with the following code.

Firebase.js

import firebase from 'firebase'; 
  
const firebaseConfig = { 
    // Your Credentials 
  }; 
  
firebase.initializeApp(firebaseConfig); 
  
var auth = firebase.auth(); 
var provider = new firebase.auth.GithubAuthProvider(); 
export {auth , provider};

Step 6: Register your app as a developer application on GitHub and get your app’s OAuth 2.0 Client ID and Client Secret.

For Authorization callback URL go to your authentication section and click on Github sign-in method. After that copy the callback URL.

Step 7: Now Enable the Github sign-in method by entering your Client ID and Client Secret.

Step 8: Now install the npm package i.e. react-firebase-hooks using the following command.

npm i react-firebase-hooks

This package helps us to listen to the current state of the user.

Step 9: Create two files i.e. login.js and main.js with the following code.

login.js

import {auth , provider} from './firebase'; 
const Login = ()=>{ 
  
    // SignIn with GitHub 
    const submit = ()=>{ 
        auth.signInWithPopup(provider).catch(alert); 
    } 
    return ( 
        <div> 
            <center> 
            <button onClick={submit}> 
                SignIn with Github 
            </button> 
            </center> 
        </div> 
    ) 
} 
export default Login;

main.js

import {auth} from './firebase'; 
const Main = ()=>{ 
    const logout = ()=>{ 
        auth.signOut(); 
    } 
    return( 
        <div> 
            Welcome  
                 
            { 
                auth.currentUser.email 
            } 
                 
            <button onClick={logout}> 
                Logout 
            </button>   
        </div> 
    ) 
} 
export default Main;

Step 10: Finally Import all required files in App.js file as shown below.

App.js

import './App.css'; 
import Login from './login'; 
import {auth} from './firebase'; 
import Main from './main'; 
import {useAuthState} from 'react-firebase-hooks/auth'; 
function App() { 
  const [user] = useAuthState(auth); 
  return ( 
    user ? <Main/> : <Login/> 
  ); 
} 
  
export default App; 