exchange rate hipchat bot

hipchat-oxr.py

import json
import requests


def lambda_handler(event, context):
    message_id = event.get('message_id')
    if not message_id:
        return None

    ccypair = event.get('ccypair')
    if not ccypair:
        return None

    if not ccypair.startswith('/exchange '):
        return None

    currencies = ccypair.replace('/exchange ', '').strip().split('/', 2)
    base_currency = currencies[0].upper()
    quote_currency = currencies[1].upper()

    r = requests.get('https://currency-api.appspot.com/api/{base}/{quote}.json'.format(base=base_currency,
                                                                                       quote=quote_currency))
    response = r.json()

    if 'success' not in response or response['success'] is not True:
        return None

    room_response = {
        'attach_to': message_id,
        'color': 'green',
        'message': '<b>{base} to {quote}</b>: {rate}'.format(base=base_currency,
                                                             quote=quote_currency,
                                                             rate=response['rate']),
        'notify': False,
        'message_format': 'html'
    }

    print {'event': event, 'fetch': response, 'response': room_response}

    return json.dumps(room_response)