import type { ContentNavNode } from '../types';

export function getBooks(): ContentNavNode[] {
  return Array.from(ERUDIT.contentNav.id2Books.values());
}

export function getBookIds(idType: 'full' | 'short' = 'full'): string[] {
  return getBooks().map((book) =>
    idType === 'short' ? book.shortId : book.fullId,
  );
}

export function getBookFor(
  nodeOrId: ContentNavNode | string,
): ContentNavNode | undefined {
  const node =
    typeof nodeOrId === 'string'
      ? ERUDIT.contentNav.getNode(nodeOrId)
      : nodeOrId;

  if (!node) {
    return;
  }

  const nodeFullId = node.fullId;
  let longestMatch: ContentNavNode | undefined;

  for (const book of ERUDIT.contentNav.id2Books.values()) {
    if (nodeFullId.startsWith(book.fullId)) {
      if (!longestMatch || book.fullId.length > longestMatch.fullId.length) {
        longestMatch = book;
      }
    }
  }

  return longestMatch;
}