#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# Copyright (C) 2018 WikiTeam developers
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import random
import re
import sys
import time
import urllib.request

def main():
    opener = urllib.request.build_opener()
    opener.addheaders = [('User-agent', 'Mozilla/5.0')]
    urllib.request.install_opener(opener)
    
    wikis = []
    with open('wikidot-spider.txt', 'r') as f:
        wikis = f.read().strip().splitlines()
    
    for i in range(1, 1000000):
        url = random.choice(wikis)
        print('URL search', url)
        try:
            html = urllib.request.urlopen(url).read().decode('utf-8')
        except:
            print('Search error')
            time.sleep(30)
            continue
        html = urllib.parse.unquote(html)
        m = re.findall(r'://([^/]+?\.wikidot\.com)', html)
        for wiki in m:
            wiki = 'http://' + wiki
            if not wiki in wikis:
                wikis.append(wiki)
                wikis.sort()
                print(wiki)
        with open('wikidot-spider.txt', 'w') as f:
            wikis2 = []
            for wiki in wikis:
                wiki = re.sub(r'https?://www\.', 'http://', wiki)
                if not wiki in wikis2:
                    wikis2.append(wiki)
            wikis = wikis2
            wikis.sort()
            f.write('\n'.join(wikis))
        print('%d wikis found' % (len(wikis)))
        sleep = random.randint(1,5)
        print('Sleeping %d seconds' % (sleep))
        time.sleep(sleep)

if __name__ == '__main__':
    main()