import {unified} from 'unified'
import remarkParse from 'remark-parse'
import remarkRehype from 'remark-rehype'
import rehypeStringify from 'rehype-stringify'

export default function (line, lineData, doc) {
  const blockLevel = lineData.level

  let md = ''

  function finalize() {
    return unified()
    .use(remarkParse)
    .use(remarkRehype)
    .use(rehypeStringify)
    .process(md)
  }

  async function markdownContents(line, lineData, doc) {
    if (lineData.level <= blockLevel) {
      const final = String(await finalize())
      page.body += final
      return doc.repeat(baseHandler)
    }

    md += line.slice(blockLevel + 1) + '\n'
    return doc.next(markdownContents)
  }

  return doc.next(markdownContents)
}