from __future__ import print_function
import json
import logging as logging
import time
from urllib.parse import urlsplit, urlunsplit
from http.client import HTTPSConnection

logger = logging.getLogger(__name__)


def _send_response(response_url, response_body):
    try:
        json_response_body = json.dumps(response_body)
    except Exception as e:
        msg = "Failed to convert response to json: {}".format(str(e))
        logger.error(msg, exc_info=True)
        response_body = {'Status': 'FAILED', 'Data': {}, 'Reason': msg}
        json_response_body = json.dumps(response_body)
    logger.debug("CFN response URL: {}".format(response_url))
    logger.debug(json_response_body)
    headers = {'content-type': '', 'content-length': str(len(json_response_body))}
    split_url = urlsplit(response_url)
    host = split_url.netloc
    url = urlunsplit(("", "", *split_url[2:]))
    while True:
        try:
            connection = HTTPSConnection(host)
            connection.request(method="PUT", url=url, body=json_response_body, headers=headers)
            response = connection.getresponse()
            logger.info("CloudFormation returned status code: {}".format(response.reason))
            break
        except Exception as e:
            logger.error("Unexpected failure sending response to CloudFormation {}".format(e), exc_info=True)
            time.sleep(5)