Adding Google authentication via Auth.js to a Next.js app

If you want to add Google authentication to your Next.js app, you can do so using Auth.js. Auth.js is a library that provides a simple way to integrate authentication with popular identity providers such as Google, Facebook, and others.

Here’s how you can add Google authentication to your Next.js app using Auth.js:

1. Install Auth.js: First, you need to install Auth.js in your Next.js app. You can do this using npm or yarn by running the following command in your terminal:

   npm install @authjs/core

   yarn add @authjs/core

2. Create a Google client: Next, you need to create a Google client in the Google Developer Console. This client will allow your app to authenticate users with Google.
3. Set up Auth.js configuration: Once you have your Google client, you need to set up the Auth.js configuration in your Next.js app. This includes adding your Google client ID and setting up the desired authentication callbacks.

   import { createAuth } from '@authjs/core';
           
           const auth = createAuth({
             google: {
               clientId: 'YOUR_GOOGLE_CLIENT_ID',
             },
           });
           

4. Integrate authentication in your app: Finally, you can integrate the authentication flow in your Next.js app using Auth.js. This includes adding a login button that triggers the Google authentication flow, handling the authentication response, and managing the user’s session.

With these steps, you can easily add Google authentication to your Next.js app using Auth.js. This will allow your users to sign in with their Google accounts and access your app’s protected resources.