import { Value, Block } from 'slate';

import Options from '../options';
import getCurrentItem from './getCurrentItem';

/**
 * Get depth of current block in a document list
 */
const getItemDepth = (opts: Options) => (
  value: Value,
  block?: Block
): number => {
  const { document, startBlock } = value;
  block = block || startBlock;

  const currentItem = getCurrentItem(opts)(value, block);
  if (!currentItem) {
    return 0;
  }

  const list = document.getParent(currentItem.key) as Block;

  return 1 + getItemDepth(opts)(value, list);
};

export default getItemDepth;