import { NextAuthOptions } from "next-auth";
import GoogleProvider from "next-auth/providers/google";
import { PrismaAdapter } from "@next-auth/prisma-adapter";
import { prisma } from "@/lib/prisma";

export const authOptions: NextAuthOptions = {
  adapter: PrismaAdapter(prisma),
  providers: [
    GoogleProvider({
      clientId: process.env.GOOGLE_CLIENT_ID!,
      clientSecret: process.env.GOOGLE_CLIENT_SECRET!,
    }),
  ],
  callbacks: {
    async jwt({ token, account }) {
      if (account) {
        token.accessToken = account.access_token;
      }
      return token;
    },
    async session({ session, user, token }) {
      if (session?.user) {
        session.user.id = user?.id || (token?.sub as string);
        const dbUser = await prisma.user.findUnique({ where: { id: session.user.id } });
        session.user.role = dbUser?.role || 'EMPLOYEE';
      }
      return session;
    },
  },
  events: {
    async createUser({ user }) {
      const userCount = await prisma.user.count();
      if (userCount === 1) {
        await prisma.user.update({
          where: { id: user.id },
          data: { role: 'ADMIN' },
        });
      }
    },
  },
  pages: {
    signIn: "/auth/signin",
  },
};