from __future__ import print_function

from __future__ import absolute_import

from __future__ import unicode_literals

from __future__ import division

from future import standard_library

standard_library.install_aliases()

from builtins import *

import re

import sys

import os

import subprocess

import socket

from .parser import WhoisEntry

from .whois import NICClient

def whois(url, command=False):

    # clean domain to expose netloc

    ip_match = re.match(r"^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$", url)

    if ip_match:

        domain = url

        try:

            result = socket.gethostbyaddr(url)

        except socket.herror as e:

            pass

        else:

            domain = result[0]

    else:

        domain = extract_domain(url)

    if command:

        # try native whois command

        r = subprocess.Popen(['whois', domain], stdout=subprocess.PIPE)

        text = r.stdout.read()

    else:

        # try builtin client

        nic_client = NICClient()

        text = nic_client.whois_lookup(None, domain, 0)

    return WhoisEntry.load(domain, text)

def extract_domain(url):

    """Extract the domain from the given URL

    >>> extract_domain('http://www.google.com.au/tos.html')

    'google.com.au'

    >>> extract_domain('www.webscraping.com')

    'webscraping.com'

    >>> extract_domain('198.252.206.140')

    'stackoverflow.com'

    >>> extract_domain('102.112.2O7.net')

    '2o7.net'

    >>> extract_domain('1-0-1-1-1-0-1-1-1-1-1-1-1-.0-0-0-0-0-0-0-0-0-0-0-0-0-10-0-0-0-0-0-0-0-0-0-0-0-0-0.info')

    '0-0-0-0-0-0-0-0-0-0-0-0-0-10-0-0-0-0-0-0-0-0-0-0-0-0-0.info'

    """

    if re.match(r'\d+\.\d+\.\d+\.\d+', url):

        # this is an IP address

        return socket.gethostbyaddr(url)[0]

    tlds_path = os.path.join(os.getcwd(), os.path.dirname(__file__), 'data', 'tlds.txt')

    with open(tlds_path) as tlds_fil:

        suffixes = [line.lower().encode('utf-8')

                    for line in (x.strip() for x in tlds_fil)

                    if not line.startswith('#')]

    suff = 'xn--p1ai'

    if not isinstance(url, str):

        url = url.decode('utf-8')

    url = re.sub('^.*://', '', url)

    url = url.split('/')[0].lower().encode('idna')

    domain = []

    for section in url.split(b'.'):

        if section in suffixes:

            domain.append(section)

        else:

            domain = [section]

    return b'.'.join(domain).decode('idna')

if __name__ == '__main__':

    try:

        url = sys.argv[1]

    except IndexError:

        print('Usage: %s url' % sys.argv[0])

    else:

        print(whois(url))