auth.config.ts

import Google from "next-auth/providers/google";
import bcrypt from "bcryptjs";
import type { NextAuthConfig } from "next-auth";
import Credentials from "next-auth/providers/credentials";
import { db } from "./lib/db";
import { z } from "zod";

const loginConfig = z.object({
  email: z.string().email(),
  password: z.string().min(1, {
    message: "Password is required",
  }),
});

export default {
  providers: [
    Google({
      clientId: process.env.GOOGLE_CLIENT_ID,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET,
    }),
    Credentials({
      async authorize(credentials) {
        const validatedFields = loginConfig.safeParse(credentials);

        if (validatedFields.success) {
          const { email, password } = validatedFields.data;

          const user = await db.user.findUnique({ where: { email } });

          if (!user || !user.password) return null;

          const passwordMatch = await bcrypt.compare(password, user.password);

          if (passwordMatch) return user;
        }

        return null;
      },
    }),
  ],
} satisfies NextAuthConfig;