import type { MetadataRoute } from 'next'

const siteUrl = process.env.NEXT_PUBLIC_SITE_URL

export default function robots(): MetadataRoute.Robots {
  if (!siteUrl) {
    return {
      rules: {
        userAgent: '*',
        allow: '/',
      },
    }
  }

  return {
    rules: {
      userAgent: '*',
      allow: '/',
    },
    sitemap: `${siteUrl}/sitemap.xml`,
  }
}