dndextended/src/lib/auth.ts

import NextAuth from "next-auth";
import Credentials from "next-auth/providers/credentials";
import { compare } from "bcryptjs";
import clientPromise from "./mongodb";

export const { handlers, signIn, signOut, auth } = NextAuth({
  providers: [
    Credentials({
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      async authorize(credentials) {
        const client = await clientPromise;
        const db = client.db("dndextended");

        const user = await db.collection("users").findOne({ email: credentials.email });
        if (!user) return null;

        const valid = await compare(credentials.password as string, user.password);
        if (!valid) return null;

        return {
          id: user._id.toString(),
          name: user.name,
          email: user.email,
          isAdmin: user.isAdmin === true,
        };
      },
    }),
  ],
  session: { strategy: "jwt" },
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.id = user.id;
        token.isAdmin = (user as { isAdmin?: boolean }).isAdmin === true;
      }
      return token;
    },
    async session({ session, token }) {
      if (token && session.user) {
        session.user.id = token.id as string;
        session.user.isAdmin = token.isAdmin === true;
      }
      return session;
    },
  },
  pages: {
    signIn: "/login",
  },
});