getPreviewURL.js

const isDraft = id => id.includes('drafts')

export default function resolveProductionUrl(document) {
  if (!isDraft(document._id)) return undefined

  const url = 'https://your-website.com'

  if (document._type === 'recipe') {
    return `${url}/rezepte/preview/?preview_id=${document._id}`
  }

  if (document._type === 'page') {
    return `${url}/preview/?preview_id=${document._id}`
  }

  return undefined
}