import requests
from bs4 import BeautifulSoup
import urllib.request, urllib.parse, urllib.error
import sys
import os


def download_media(url):
    resp = requests.get(url)
    if resp.status_code == 200:
        soup = BeautifulSoup(resp.text, 'html.parser')
        tags_with_media = soup.find_all('a',class_='post__image-link')
        for tag in tags_with_media:
            file_link = 'https://2ch.hk' + tag['href']
            destination = './downloads/' + file_link.rsplit('/',1)[1]
            print('start: ', file_link)
            urllib.request.urlretrieve(file_link, destination)
            print('end:   ', file_link)
    else:
        print('connection error')

if __name__ == '__main__':
    try:
        os.mkdir('downloads')
        print('the download folder was created')
    except:
        print('the download folder is used')
    URL = str(sys.argv[1])
    download_media(URL)