#!/usr/bin/env python3
# coding=utf-8
# -*- coding: utf-8 -*-
import requests
from bs4 import BeautifulSoup


url_root = 'https://git.zeekling.cn'
url_mine_list = [
    'https://git.zeekling.cn/',
    'https://git.zeekling.cn/zeekling',
    'https://git.zeekling.cn/deep-learn',
    'https://git.zeekling.cn/java',
    'https://git.zeekling.cn/python',
    'https://git.zeekling.cn/linux',
    'https://git.zeekling.cn/mirror'
]


headers = {
    'User-Agent':
    'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36'
}

url_res_final = []
max_depth = 2
url_robot_arr = [
    '/user/sign_up',
    '/user/login',
    '/user/forgot_password'
]
url_static_arr = [
    '.js',
    '.css',
    '.cscc',
    'None',
    'about:blank'
]


def is_static(url):
    url = str(url)
    for static in url_static_arr:
        if url.endswith(static):
            return True
    return False


def is_robot(url):
    url = str(url)
    for robot in url_robot_arr:
        if url.startswith(robot):
            return True
    return False


def getlinks(url):
    pages = requests.get(url)
    html = pages.text
    soup = BeautifulSoup(html, 'html.parser')
    links = soup.find_all('a')
    return filterlinks(links)


def filterlinks(links):
    tmplinks = []
    for link in links:
        url = str(link.get('href'))
        if url is None or url == '':
            continue
        ishttp = url.startswith('http')
        ismine = url.startswith(url_root)
        if ishttp and (not ismine):
            continue
        if url.startswith('#') or '/' == url.strip():
            continue
        if url.startswith("?"):
            continue
        if is_static(url):
            continue
        if is_robot(url):
            continue
        if not ishttp and url.startswith("/"):
            url = url_root  + url
        elif not ishttp:
            url = url_root + '/'  + url
        tmplinks.append(url)
    reslinks = list(set(tmplinks))
    return reslinks


def parser(url_arr, depth):
    url_tmp = []
    if(depth >= max_depth):
        return
    depth += 1
    print('parsing depth:', depth, ' parse urls:', len(url_arr))
    for urlmine in url_arr:
        links = getlinks(urlmine)
        url_tmp.extend(links)
    url_tmp = list(set(url_tmp).difference(set(url_res_final)))
    url_res_final.extend(url_tmp)
    parser(url_tmp, depth)


parser(url_mine_list, 0)
# print('parser result size:', len(url_res_final))
# for url in url_res_final:
#     print(url)