findAppIcons method

Implementation

Map<String, List<Map<String, String>>> findAppIcons(
    Map<String, dynamic> data, List<String> sectionsToDownload) {
  Map<String, List<Map<String, String>>> imageNodes = {};

  void traverseNodes(dynamic node, String folderName) {
    if (node == null || node['children'] == null) return;

    for (var child in node['children']) {
      if (child['type'] == 'FRAME' || child['type'] == 'COMPONENT_SET') {
        // Recursively traverse nested frames & component sets (for variants)

        traverseNodes(child, folderName);
      } else if (child['type'] == 'COMPONENT') {
        imageNodes[folderName]!.add({
          'id': child['id'],
          'name': child['name'],
        });
      } else if (child['type'] == 'INSTANCE') {
        // Extract instances but don’t go deeper
        imageNodes[folderName]!.add({
          'id': child['id'],
          'name': child['name'],
        });
      } else {
        continue;
      }
    }
  }

  for (var page in data['document']['children'] ?? []) {
    for (var node in page['children'] ?? []) {
      if (!node['name'].startsWith('APP_ASSET_') || node['type'] != 'FRAME') {
        continue;
      }

      String folderName = node['name'].replaceFirst('APP_ASSET_', '');

      // Only include specified sections (or all if empty)
      if (sectionsToDownload.isNotEmpty &&
          !sectionsToDownload.contains(folderName)) {
        continue;
      }

      imageNodes[folderName] = [];

      // Start recursive traversal
      traverseNodes(node, folderName);
    }
  }

  return imageNodes;
}