import NextAuth from "next-auth";
import Credentials from "next-auth/providers/credentials";
import bcrypt from "bcryptjs";
import { db } from "@/lib/db";
import type { Role } from "@prisma/client";

export const { handlers, auth, signIn, signOut } = NextAuth({
  session: { strategy: "jwt" },
  pages: { signIn: "/login" },
  providers: [
    Credentials({
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      authorize: async (credentials) => {
        const email = (credentials?.email as string | undefined)?.trim().toLowerCase();
        const password = credentials?.password as string | undefined;
        if (!email || !password) return null;

        const user = await db.user.findFirst({ where: { email, active: true } });
        if (!user) return null;

        const valid = await bcrypt.compare(password, user.passwordHash);
        if (!valid) return null;

        return {
          id: user.id,
          name: user.name,
          email: user.email,
          role: user.role,
        };
      },
    }),
  ],
  callbacks: {
    jwt({ token, user }) {
      if (user) {
        token.id = user.id!;
        token.role = user.role;
      }
      return token;
    },
    session({ session, token }) {
      session.user.id = token.id as string;
      session.user.role = token.role as Role;
      return session;
    },
  },
});