metro-info/cgi-bin/platform_data.py

#!/srv/think.somethingorotherwhatever.com/venv/bin/python

import cgi
import cgitb
import requests
from pathlib import Path
from datetime import datetime, timedelta
import getpass

cgitb.enable()

form = cgi.FieldStorage()

print('Content-Type: application/json\n')

station = form['station'].value
platform = form['platform'].value

data_root = Path('..') / 'platform_data'

data_root.mkdir(exist_ok=True)

fname = data_root / f'{station}-{platform}.json'

if (not fname.exists()) or (datetime.now() - datetime.fromtimestamp(fname.stat().st_mtime) > timedelta(seconds=20)):
  req = requests.get(f'https://metro-rti.nexus.org.uk/api/times/{station}/{platform}')
  with open(fname, 'w') as f:
    f.write(req.text)

with open(fname) as f:
  print(f.read())