#openssl stuff
import OpenSSL
import socket, ssl

#date stuff
import dateutil.parser as date_parser
from pytz import utc as UTC
from datetime import datetime

#collectd stuff
#import collectd

import ipaddress

import pdb

DOMAIN = "geekify.de"
address_family = "ipv4"
TIMEOUT_SECONDS = 1

def configure(config):
    for c in config.children:
        print(c)

today = datetime.now(UTC)
port = 443
if address_family == "ipv4":
    af = socket.AF_INET
elif address_family == "ipv6":
    af = socket.AF_INET6
else:
    proto = None

try:
    addrinfo = socket.getaddrinfo(DOMAIN, None, af, proto=socket.IPPROTO_TCP)

    # addrinfo first contains an array of connections made, we want the first ([0]) and only one we made
    # this tuple then contains (family, type, proto, canonname, sockaddr) - we want sockaddr == [4]
    # this then can contain either (host, port) or (host, port, flowinfo, scopeid) depending on set address family. Since host is anyways at [0] we take this as final ip address
    host = addrinfo[0][4][0]
except socket.gaierror:
    host = DOMAIN

context = ssl.create_default_context()
with socket.create_connection((host, port), TIMEOUT_SECONDS) as sock:
    with context.wrap_socket(sock, server_hostname=DOMAIN) as sslsock:
        der_cert = sslsock.getpeercert(True)
        pem_cert = ssl.DER_cert_to_PEM_cert(der_cert)

x509 = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_ASN1, der_cert)
exp = x509.get_notAfter().decode("utf-8")
expirary_date = date_parser.parse(exp)
delta = expirary_date - today
print(delta.total_seconds())

pdb.set_trace()