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

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

        const user = await prisma.user.findUnique({ where: { email } });
        if (!user) return null;

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

        return { id: String(user.id), name: user.name, email: user.email, role: user.role };
      },
    }),
  ],
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.role = (user as { role?: string }).role;
      }
      return token;
    },
    async session({ session, token }) {
      if (session.user) {
        (session.user as { role?: string }).role = token.role as string | undefined;
      }
      return session;
    },
  },
});