auth.ts

import NextAuth from "next-auth";
import { PrismaAdapter } from "@auth/prisma-adapter";
import { PrismaClient } from "@prisma/client";
import authConfig from "./auth.config";
import { getUserById } from "./data/user";

const prisma = new PrismaClient();

export const { auth, handlers, signIn, signOut } = NextAuth({
  pages: {
    signIn: "/",
  },
  callbacks: {
    async session({ session, token }) {
      if (session.user && token.sub) {
        session.user.id = token.sub;
      }
      return session;
    },
    async jwt({ token }) {
      if (!token.sub) return token;
      const existingUser = await getUserById(token.sub);
      if (!existingUser) return null;
      token.name = existingUser.name;
      token.id = existingUser.id;
      return token;
    },
  },
  adapter: PrismaAdapter(prisma),
  session: { strategy: "jwt" },
  ...authConfig,
});