import type { Root as MdastRoot } from 'mdast';
import { CONTINUE, visit } from 'unist-util-visit';

export function remarkSpaceListsOut() {
  return function (root: MdastRoot) {
    return spaceListsOut(root);
  };
}

// ReadMe-specific function since they sometimes stack `<ol>`
// elements right on top of each other
function spaceListsOut(root: MdastRoot) {
  return visit(root, 'list', (_, index, parent) => {
    if (!parent || typeof index !== 'number') return CONTINUE;
    if (index && index > 0 && parent.children[index - 1]?.type === 'list') {
      parent.children.splice(index, 0, {
        type: 'paragraph',
        children: [{ type: 'text', value: '' }],
      });
    }
  });
}