auth.ts

import NextAuth, { type DefaultSession } from 'next-auth';
import GitHub from 'next-auth/providers/github';
import Google from 'next-auth/providers/google';

declare module 'next-auth' {
  interface Session {
    user: {
      /** The user's id. */
      id: string;
    } & DefaultSession['user'];
  }
}

export const {
  handlers: { GET, POST },
  auth,
} = NextAuth({
  providers: [
    GitHub,
    Google({
      clientId: process.env.GOOGLE_CLIENT_ID!,
      clientSecret: process.env.GOOGLE_SECRET!,
    }),
  ],
  callbacks: {
    signIn({ profile }) {
      if (profile?.email?.endsWith('@landing.ai')) {
        return !!profile;
      } else {
        return '/unauthorized';
      }
    },
    jwt({ token, profile }) {
      if (profile) {
        token.id = profile.id || profile.sub;
        token.image = profile.avatar_url || profile.picture;
      }
      return token;
    },
    session: ({ session, token }) => {
      if (session?.user && token?.id) {
        session.user.id = String(token.id);
      }
      return session;
    },
    authorized({ request, auth }) {
      return !!auth?.user || request.nextUrl.pathname === '/unauthorized'; // this ensures there is a logged in user for -every- request
    },
  },
  pages: {
    signIn: '/sign-in', // overrides the next-auth default signin page https://authjs.dev/guides/basics/pages
  },
});