import fs from 'fs'
import path from 'path'
import { compileMdx } from './compile.mjs'
import { jargon } from 'shared/jargon/index.mjs'

/*
 * Loads markdown/mdx from disk
 */
export const loadMdxFromDisk = async ({
  language, // The language code of the markdown to load (like 'en')
  site, // The site folder, one of 'dev' or 'org'
  slug, // The slug below that folder, like 'guides/plugins'
}) =>
  await fs.promises.readFile(path.resolve(`../../markdown/${site}/${slug}/${language}.md`), 'utf-8')

/*
 * Loads markdown/mdx from disk and compiles it for use
 * in static props.
 */
export const loadMdxAsStaticProps = async ({
  language, // The language code of the markdown to load (like 'en')
  site, // The site folder, one of 'dev' or 'org'
  slug = false, // The slug below that folder, like 'guides/plugins'
  slugs = [], // Or an array of slugs to load multiple files
}) => {
  const result = []
  if (slug) slugs = [slug]
  for (const s of slugs) {
    const md = await loadMdxFromDisk({ language, site, slug: s })
    const mdx = await compileMdx({
      md,
      site,
      slug: s,
      jargon: jargon[language],
    })
    result.push(mdx)
  }

  return slugs.length === 1 ? result[0] : result
}