import os
import json

def get_subfolders(folder_path):
  """Gets all subfolders within a given folder path."""
  return [f for f in os.listdir(folder_path) if os.path.isdir(os.path.join(folder_path, f))]

def main():
  """Main function to iterate over folders and create JSON output."""
  folders_to_scan = ['paper', 'spigot', 'bukkit']
  subfolder_data = {}

  for folder in folders_to_scan:
    subfolders = get_subfolders(folder)
    subfolder_data[folder] = subfolders

  with open('versions.json', 'w') as json_file:
    json.dump(subfolder_data, json_file, indent=2)

if __name__ == "__main__":
  main()