import asyncio
import re

from bs4 import BeautifulSoup
from lxml import html

from misc import exceptions as exc
from utils import utils as u


async def get_post(url):
    await asyncio.sleep(u.RATE_LIMIT)

    content = await u.fetch('http://iqdb.harry.lu', params={'url': url})

    try:
        value = BeautifulSoup(content, 'html.parser').find_all('a')[1].get('href')
        if value != '#':
            return value
        else:
            raise IndexError

    except IndexError:
        try:
            raise exc.MatchError(re.search('\/([^\/]+)$', url).group(1))

        except AttributeError:
            raise exc.MissingArgument


async def get_image(url):
    content = await u.fetch(url)

    value = html.fromstring(content).xpath(
        'string(/html/body/div[@id="content"]/div[@id="post-view"]/div[@class="content"]/div[2]/img/@src)')

    return value