auth.ts

import NextAuth from "next-auth";
import { PrismaAdapter } from "@auth/prisma-adapter";
import { prisma } from "@/../lib/prisma";
import Credentials from "next-auth/providers/credentials";
import { LoginSchema } from "@/../lib/zod";
import { compareSync } from "bcrypt-ts";
import Google from "next-auth/providers/google";
import GitHub from "next-auth/providers/github";

export const { handlers, signIn, signOut, auth } = NextAuth({
  adapter: PrismaAdapter(prisma),
  session: {
    strategy: "jwt",
  },
  pages: {
    signIn: "/login",
  },
  providers: [
    Google,
    GitHub,
    Credentials({
      credentials: {
        email: {},
        password: {},
      },
      authorize: async (credentials) => {
        const validateFields = LoginSchema.safeParse(credentials);

        if (!validateFields.success) {
          return null;
        }

        const { email, password } = validateFields.data;

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

        if (!user || !user.password) {
          throw new Error("Invalid credentials");
        }

        const passwordMatch = compareSync(password, user.password);

        if (!passwordMatch) return null;

        return user;
      },
    }),
  ],
  //  callback
  callbacks: {
    authorized({ auth, request: { nextUrl } }) {
      const isLoggedIn = !!auth?.user;
      const ProtectedRoutes = ["/dashboard", "/user", "/product"];

      if (!isLoggedIn && ProtectedRoutes.includes(nextUrl.pathname)) {
        return Response.redirect(new URL("/login", nextUrl));
      }

      if (isLoggedIn && nextUrl.pathname.startsWith("/login")) {
        return Response.redirect(new URL("/dashboard", nextUrl));
      }

      return true;
    },
    jwt({ token, user }) {
      if (user) token.role = user.role;
      return token;
    },
    session({session, token}) {
      session.user.id = token.sub;
      session.user.role = token.role;
      return session;
    }
  },
});