# -*- coding: utf-8 -*-

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().decode()

    else:

        # try builtin client

        nic_client = NICClient()

        text = nic_client.whois_lookup(None, domain.encode('idna'), 0)

    return WhoisEntry.load(domain, text)

suffixes = None

def extract_domain(url):

    """Extract the domain from the given URL

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

    google.com.au

    >>> print(extract_domain('abc.def.com'))

    def.com

    >>> print(extract_domain(u'www.公司.hk'))

    公司.hk

    >>> print(extract_domain('chambagri.fr'))

    chambagri.fr

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

    webscraping.com

    >>> print(extract_domain('198.252.206.140'))

    stackoverflow.com

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

    2o7.net

    >>> print(extract_domain('globoesporte.globo.com'))

    globo.com

    >>> print(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]

    # load known TLD suffixes

    global suffixes

    if not suffixes:

        # downloaded from https://publicsuffix.org/list/public_suffix_list.dat

        tlds_path = os.path.join(os.getcwd(), os.path.dirname(__file__), 'data', 'public_suffix_list.dat')

        with open(tlds_path, encoding='utf-8') as tlds_fp:

            suffixes = set(line.encode('utf-8') for line in tlds_fp.read().splitlines() if line and not line.startswith('//'))

    if not isinstance(url, str):

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

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

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

    # find the longest suffix match

    domain = b''

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

        if domain:

            domain = b'.' + domain

        domain = section.encode('utf-8') + domain

        if domain not in suffixes:

            break

    return domain.decode('utf-8')

if __name__ == '__main__':

    try:

        url = sys.argv[1]

    except IndexError:

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

    else:

        print(whois(url))