auth.ts

import GoogleProvider from "next-auth/providers/google";
import type { NextAuthOptions } from "next-auth";

export const authOptions: NextAuthOptions = {
  secret: process.env.NEXTAUTH_SECRET,
  providers: [
    GoogleProvider({
      clientId: process.env.GOOGLE_CLIENT_ID!,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET!,
    }),
  ],
  session: { strategy: "jwt" },
  pages: { signIn: "/auth/signin" },
  callbacks: {
    async session({ session, token }) {
      if (token.sub && session.user) {
        session.user.id = token.sub;
      }
      return session;
    },
    async jwt({ token, user }) {
      if (user) {
        token.sub = user.id;
      }
      return token;
    },
  },
};