'use client';

import { useEffect } from 'react';
import { useRouter } from 'next/navigation';
import { authApi, wishlistsApi } from '@/lib/api';

export default function HomePage() {
  const router = useRouter();

  useEffect(() => {
    let cancelled = false;
    (async () => {
      const params = new URL(window.location.href).searchParams;
      const adm = params.get('adm');
      const usr = params.get('usr');
      try {
        if (adm) {
          await authApi.session({ adm });
          router.replace('/admin');
          return;
        }
        if (usr) {
          await authApi.session({ usr });
        }
        const who = await authApi.whoami();
        if (cancelled) return;
        if (who.role === 'admin') {
          router.replace('/admin');
          return;
        }
        // For guests (and after usr token auth), redirect to the single wishlist
        if (who.role === 'guest') {
          const lists = await wishlistsApi.getAllPublic();
          if (cancelled) return;
          if (lists.length > 0) {
            router.replace(`/${lists[0].slug}`);
          }
          return;
        }
        // Unauthenticated — redirect to wishlist anyway (GuestGuard will block them there)
        const lists = await wishlistsApi.getAllPublic();
        if (!cancelled && lists.length > 0) {
          router.replace(`/${lists[0].slug}`);
        }
      } catch {
        // ignore
      }
    })();
    return () => { cancelled = true; };
  }, [router]);

  return (
    <div className="min-h-screen flex items-center justify-center text-center px-6">
      <div className="max-w-xl">
        <p className="text-lg text-gray-500">Carregando…</p>
      </div>
    </div>
  );
}