import type { SiteDocument } from '../../server/utils/site-schema'

export async function useSiteDocument() {
  const route = useRoute()
  const isPreview = computed(() => route.query.preview === 'draft')
  const endpoint = computed(() => isPreview.value ? '/api/admin/site' : '/api/public/site')
  const headers = import.meta.server && isPreview.value ? useRequestHeaders(['cookie']) : undefined
  useHead(() => isPreview.value ? { meta: [{ name: 'robots', content: 'noindex, nofollow' }] } : {})
  const { data: response, error } = await useFetch<{ data: SiteDocument }>(endpoint, { headers })

  if (error.value) {
    if (isPreview.value && error.value.statusCode === 401) {
      throw createError({ statusCode: 401, statusMessage: '预览草稿前请先登录后台' })
    }
    throw error.value
  }

  return {
    site: computed(() => response.value!.data),
    isPreview,
  }
}

export function useAbsoluteUrl() {
  const config = useRuntimeConfig()
  const base = String(config.public.siteUrl).replace(/\/$/, '')
  return (path?: string | null) => {
    if (!path) return base
    if (/^https?:\/\//i.test(path)) return path
    return `${base}${path.startsWith('/') ? path : `/${path}`}`
  }
}