getLibraryContents function

Implementation

JsonMap? getLibraryContents(JsonMap response, List renderer) {
  final section = nav(
    response,
    SINGLE_COLUMN_TAB + SECTION_LIST,
    nullIfAbsent: true,
  );

  JsonMap? contents;
  if (section == null) {
    final numTabs = (nav(response, [...SINGLE_COLUMN, 'tabs']) as List).length;
    final libraryTab = numTabs < 3 ? TAB_1_CONTENT : TAB_2_CONTENT;
    contents =
        nav(
              response,
              SINGLE_COLUMN + libraryTab + SECTION_LIST_ITEM + renderer,
              nullIfAbsent: true,
            )
            as JsonMap?;
  } else {
    final results = findObjectByKey(section as List, 'itemSectionRenderer');
    if (results == null) {
      contents =
          nav(
                response,
                SINGLE_COLUMN_TAB + SECTION_LIST_ITEM + renderer,
                nullIfAbsent: true,
              )
              as JsonMap?;
    } else {
      contents =
          nav(results, ITEM_SECTION + renderer, nullIfAbsent: true) as JsonMap?;
    }
  }

  return contents;
}