// no appendix -> add appendix
// title in front, no h1 -> add it
// no title in front, h1 -> read and put into frontMatter
// footnote -> footnote list
// break up bib
// if citation, no bib-list -> add citation-list

// if authors, no byline -> add byline

export default function(dom, data) {
  const article = dom.querySelector('d-article');
  const abstract = dom.querySelector('d-abstract');

  // let h1 = dom.querySelector('h1');
  // if (h1) {
  //   if (!data.title) {
  //     data.title = h1.textContent;
  //   }
  // } else {
    if (data.title) {
      let headline = dom.createElement('d-title');
      let h1 = dom.createElement('h1');
      headline.appendChild(h1);
      h1.textContent = data.title;
      abstract.parentNode.insertBefore(headline, abstract);
    }
    // if (data.description) {
    //   const h2 = dom.createElement('h2');
    //   h2.textContent = data.description;
    //   article.insertBefore(h2, h1.nextSibling);
    // }
  // }

  let byline = dom.querySelector('d-byline');
  if (!byline && data.authors) {
    byline = dom.createElement('d-byline');
    article.parentNode.insertBefore(byline, article);
    // const skipTags = ['H1', 'FIGURE', 'D-ABSTRACT'];
    // let candidate = h1;
    // while (skipTags.indexOf(candidate.tagName) !== -1) {
    //   candidate = candidate.nextSibling;
    // }
    // article.insertBefore(byline, candidate);
  }

  let appendix = dom.querySelector('d-appendix');
  if (!appendix) {
    appendix = dom.createElement('d-appendix');
    dom.body.appendChild(appendix);
  }

  let footnoteList = dom.querySelector('d-footnote-list');
  if (!footnoteList) {
    footnoteList = dom.createElement('d-footnote-list');
    appendix.appendChild(footnoteList);
  }

  let citationList = dom.querySelector('d-citation-list');
  if (!citationList) {
    citationList = dom.createElement('d-citation-list');
    appendix.appendChild(citationList);
  }

}