/**
 * Admin: Benutzerverwaltung (Option B).
 * Nur ADMIN-Rolle hat Zugriff; USER werden zurueck zum Dashboard geleitet.
 */
import { redirect } from 'next/navigation';
import { requireDbUser } from '@/lib/api/context';
import { UserManagement } from '@/components/admin/UserManagement';
import { AppShell } from '@/components/layout/AppShell';

export default async function AdminUsersPage() {
  const user = await requireDbUser().catch(() => null);
  if (!user) {
    redirect('/login');
  }
  if (user.role !== 'ADMIN') {
    redirect('/dashboard');
  }

  return (
    <AppShell role={user.role} userEmail={user.email} username={user.username}>
      <h1 className="mb-6 text-2xl font-bold">Benutzerverwaltung</h1>
      <UserManagement currentUserId={user.id} />
    </AppShell>
  );
}