#!/usr/bin/env python3

import argparse
from os import environ
import requests
from requests.adapters import HTTPAdapter, Retry
from urllib.parse import urlencode

ZUKO_SESSIONS_API_URL = 'https://egress.api.zuko.io/sessions'

try:
  ZUKO_API_KEY = environ['ZUKO_API_KEY']
except KeyError:
  exit('The ZUKO_API_KEY environment variable must be set with your Zuko API key')

parser = argparse.ArgumentParser()
parser.add_argument('--form-uuid', '-f', required=True)
parser.add_argument('--start-time', '-s', required=True)
parser.add_argument('--end-time', '-e', required=True)
args = parser.parse_args()

def fetch_sessions(params):
  session = requests.Session()
  session.mount('https://', HTTPAdapter(max_retries=Retry(total=3, backoff_factor=3.0, status_forcelist=[429])))
  resp = session.get(
    ZUKO_SESSIONS_API_URL + "?" + urlencode(params),
    headers={
      'X-Api-Key': ZUKO_API_KEY
    }
  )
  resp.raise_for_status()
  next_page_id = resp.json().get('next_page_id')
  sessions = resp.json()['sessions']
  return [next_page_id, sessions]

params = {
  'form_uuid': args.form_uuid,
  'time[from]': args.start_time,
  'time[to]': args.end_time,
}

sessions = []
next_page_id = True

while next_page_id:
  next_page_id, batch = fetch_sessions(params)
  sessions += batch
  params['next_page_id'] = next_page_id

print('Fetched {} session(s) for form {} between {} and {}'
  .format(len(sessions), args.form_uuid, args.start_time, args.end_time))