// GET /api/__seo__/site: the CMS's site answer (GET <apiBase>/site, SEO
// plugin v0.2.0) through the layer's server and its cache, for useSeoSite()
// on the server and in the browser. Always 200 with {site: <answer> | null}:
// null with the layer off, with a backend before v0.2.0 (its /site answers
// 404) or with a backend that has not answered since start. Never
// route-cached ('/api/__seo__/**' cache false) and never indexed.

import { seoServerConfig } from '../../lib/config.ts'
import { siteAnswer } from '../../lib/site.ts'

export default defineEventHandler(async (event) => {
  setResponseHeaders(event, { 'cache-control': 'no-store', 'x-robots-tag': 'noindex' })
  const cfg = seoServerConfig(useRuntimeConfig(event))
  if (!cfg.enabled) return { site: null }
  const forwarded = event.context.seoForwardedFor as string | undefined
  const state = await siteAnswer(cfg, forwarded ? { 'x-forwarded-for': forwarded } : {})
  return { site: state.state === 'ok' ? state.site : null }
})