import markdownIt from 'markdown-it';
import markdownItAnchor from 'markdown-it-anchor';
import markdownItFootnote from 'markdown-it-footnote';
import markdownItLinkAttributes from 'markdown-it-link-attributes';
import markdownItPrism from 'markdown-it-prism';

export const markdownLib = markdownIt({ html: true, linkify: true })
  .use(markdownItAnchor, {
    level: [1, 2],
    permalink: markdownItAnchor.permalink.headerLink({
      safariReaderFix: true
    })
  })
  .use(markdownItLinkAttributes, [
    {
      matcher(href) {
        return href.match(/^https?:\/\//);
      },
      attrs: {
        rel: 'noopener'
      }
    }
  ])
  .use(markdownItFootnote)
  .use(markdownItPrism);