import logging
from typing import Optional

import requests
from bs4 import BeautifulSoup


class Iqdb:
    @staticmethod
    def search(file: str) -> Optional[str]:
        logging.info('Searching %s', file)
        files = {'file': open(file, 'rb')}
        resp = requests.post('https://iqdb.org/', files=files, timeout=10)
        doc = BeautifulSoup(resp.text, 'html.parser')
        for tag in doc.select(".image a"):
            url = tag.get("href")
            if "danbooru.donmai.us/posts" in url:
                if url.startswith("//"):
                    url = "https:" + url
                return url
        return None