auth.ts

import NextAuth from "next-auth";
import { authConfig } from "./auth.config";
import Credentials from "next-auth/providers/credentials";
import {z} from 'zod';
import type { User } from "@/app/lib/definitions";
import bcrypt from 'bcrypt'
import { sql } from "@vercel/postgres";

async function getUser(email:string): Promise<User | undefined> {
     try{
        const user = await sql<User>`SELECT * FROM users WHERE email=${email}`;
  
        return user.rows[0]
     }catch(error){
        console.log('Failed to fetch user:',error);
        throw new Error('Failed to fetch user')
     }
}
export const {auth,signIn,signOut} = NextAuth({
    ...authConfig,
    providers:[
        Credentials({
        async authorize(credentials){
            const parsedCredentials = z
            .object({ email:z.string().email(), password:z.string().min(6) })
            .safeParse(credentials);
              console.log("test",parsedCredentials)
            if(parsedCredentials.success){
                 const  {email , password } = parsedCredentials.data;
                 const user = await getUser(email)
                 if(!user) return null;
                 const passwordsMatch = await bcrypt.compare(password,user.password)
                 if(passwordsMatch) return user;
            }
              console.log('Invalid credentials');
              return null
        },
    })
],
})