from pathlib import Path
import json

try:
  file_path = (Path(__file__).parent / 'input_files' / 'part.geojson')
  output_file_path = (Path(__file__).parent / 'input_files' / 'selected_building.geojson').resolve()
  selected_building = 5755

  with open(file_path) as json_file:
    _geojson = json.loads(json_file.read())
  features = [_geojson['features'][selected_building - 1]]
  output_json = {"type": "FeatureCollection",
                 "features": features
                 }
  json_object = json.dumps(output_json, indent=4)
  with open(output_file_path, "w") as outfile:
    outfile.write(json_object)


except Exception as ex:
  print(ex)
  print('error: ', ex)