import { getRequestURL, setHeader } from 'h3'
import { buildRobotsTxt } from '../utils/sitemap'

/**
 * robots.txt 응답
 * @param {import('h3').H3Event} event - 요청 이벤트
 * @returns {Promise<string>} robots.txt 본문
 */
export default defineEventHandler(async (event) => {
  setHeader(event, 'Content-Type', 'text/plain; charset=utf-8')
  setHeader(event, 'Cache-Control', 'public, max-age=300')

  return buildRobotsTxt(getRequestURL(event).origin)
})