export default defineEventHandler((event) => {
  const baseUrl = String(useRuntimeConfig().public.siteUrl).replace(/\/$/, '')
  setHeader(event, 'Content-Type', 'text/plain; charset=utf-8')
  setHeader(event, 'Cache-Control', 'public, max-age=3600')
  return `User-agent: *\nAllow: /\nDisallow: /admin\nDisallow: /api/admin\nDisallow: /api/auth\n\nSitemap: ${baseUrl}/sitemap.xml\n`
})