How can I customize authentication in Next.js using NextAuth?

How can I customize authentication in Next.js using NextAuth?

You can customize authentication in Next.js with NextAuth by modifying the options in the NextAuth configuration. What specific customization are you looking for?

I want to add a custom sign-in page and handle user roles.

To add a custom sign-in page, you can set the pages option in your NextAuth configuration. For user roles, you can manage them in your database and use callbacks to set the session.

Can you show me an example of the configuration?

Sure! Here's a basic example:

import NextAuth from 'next-auth';
import Providers from 'next-auth/providers';

export default NextAuth({
  providers: [
    Providers.Google({
      clientId: process.env.GOOGLE_CLIENT_ID,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET,
    }),
  ],
  pages: {
    signIn: '/auth/signin',
  },
  callbacks: {
    async session(session, user) {
      session.user.role = user.role; // Add user role to session
      return session;
    },
  },
});

This sets up a custom sign-in page and includes user roles in the session.

That looks great! How do I create the custom sign-in page?

You can create a custom sign-in page by making a new component in your pages/auth directory. Use the signIn method from NextAuth to handle the authentication process.