auth.ts

import NextAuth from 'next-auth';
import authConfig from '@/auth.config';
import {setupFirebaseApp} from '@/app/lib/firebase';
import {signInWithEmailAndPassword, getAuth} from 'firebase/auth';
import Credentials from 'next-auth/providers/credentials';
import {z} from 'zod';
import {User} from '@/app/lib/user';

export const {auth, signIn, signOut} = NextAuth({
  ...authConfig,
  providers: [
    Credentials({
      async authorize(credentials) {
        const firebaseApp = await setupFirebaseApp();

        const parsedCredentials = z
          .object({email: z.string().email(), password: z.string().min(6)})
          .safeParse(credentials);

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

          try {
            const userCredential = await signInWithEmailAndPassword(
              getAuth(firebaseApp),
              email,
              password
            );

            const user = new User(userCredential.user.uid, email);
            user.emailVerified = userCredential.user.emailVerified;

            if (user.email?.includes('admin_')) {
              user.isAdmin = true;
            }

            return user;
          } catch (error) {
            const message =
              error instanceof Error ? error.message : 'Unknown error';
            console.log('FIREBAE AUTH ERROR: ', message);
            return null;
          }
        }

        console.log('Invalid credentials');
        return null;
      },
    }),
  ],
});