next-learn/dashboard/15-final/app/api/auth/[...nextauth]/route.ts

import NextAuth, { NextAuthOptions } from 'next-auth';
import CredentialsProvider from 'next-auth/providers/credentials';
import bcrypt from 'bcrypt';
import { fetchUser } from '../../../lib/data';
import { User } from '@/app/lib/definitions';

const authOptions: NextAuthOptions = {
  providers: [
    CredentialsProvider({
      name: 'credentials',
      credentials: {},

      // TODO: Not sure how to type authorize function correctly
      // @ts-ignore
      async authorize(credentials: {
        email: string;
        password: string;
      }): Promise<User | null | undefined> {
        const { email, password } = credentials;

        try {
          const user = await fetchUser(email);

          if (!user) {
            return null;
          }

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

          if (!passwordsMatch) {
            console.log('Passwords do not match');
            return null;
          }

          return user;
        } catch (error) {
          console.log('Error: ', error);
        }
      },
    }),
  ],
  session: {
    strategy: 'jwt',
  },
  secret: process.env.NEXTAUTH_SECRET,
  pages: {
    signIn: '/login',
  },
};

const handler = NextAuth(authOptions);

export { handler as GET, handler as POST, authOptions };