import { PrismaAdapter } from "@next-auth/prisma-adapter";
import CredentialsProvider from "next-auth/providers/credentials";
import type { NextAuthOptions } from "next-auth";
import bcrypt from "bcryptjs";
import { prisma } from "./prisma";

export const authOptions: NextAuthOptions = {
  adapter: PrismaAdapter(prisma),
  session: { strategy: "jwt" },
  pages: {
    signIn: "/login",
  },
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.id = user.id;
      }
      if (!token.id) {
        token.id = token.sub ?? "";
      }
      return token;
    },
    async session({ session, token }) {
      if (session.user) {
        session.user.id = token.id || "";
      }
      return session;
    },
  },
  providers: [
    CredentialsProvider({
      name: "Credentials",
      credentials: {
        email: { label: "Email", type: "email" },
        password: { label: "Password", type: "password" },
      },
      async authorize(credentials) {
        const email = credentials?.email?.toLowerCase().trim();
        const password = credentials?.password;
        if (!email || !password) return null;

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

        if (!user.passwordHash) return null;

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

        return { id: user.id, name: user.name, email: user.email };
      },
    }),
  ],
};