responses.py

# See https://pastebin.com/cVMsaVzd for notes on usage
import urllib


xhs_url_begin = 'http://xhs'
xhs_url_end = '，'
dlpanda_url = 'https://dlpanda.com/xiaohongshu'
danbooru_url_begin = 'https://danbooru.donmai.us/uploads/new?url='
danbooru_url_mid = '&ref='


def get_response(user_input: str, maybe_embed: str) -> str:
    user_input = user_input.replace('了一篇小红书笔记，快来看吧！','',1)
    where_begins = user_input.find(xhs_url_begin)
    where_ends = user_input.find(xhs_url_end)
    user_input = user_input[where_begins:where_ends]
    opener = urllib.request.build_opener()
    request = urllib.request.Request(user_input)
    u = opener.open(request)
    a = u.geturl().replace('https://www.xiaohongshu.com/website-login/captcha?redirectPath=','',1)
    a = a[:a.find('%3F')]
    reacting_to_embed = ''

    if maybe_embed != [] and isinstance(maybe_embed,list) and isinstance(maybe_embed[0],str):

        for mbemb in maybe_embed:
            reacting_to_embed += ('\n\n<' + mbemb + '>\n\n' + danbooru_url_begin + urllib.parse.quote(mbemb, safe='') + danbooru_url_mid + a)
    else:
        reacting_to_embed = '\n\nNo embedded image found, go to <' + dlpanda_url + '>'
        reacting_to_embed += '\n\nAlternatively, if the embed exists but this bot does not recognize it (right click on the embedded image and copy its link), or you obtained the image otherwise, paste the image url yourself after encoding it (for instance with <https://www.urlencoder.org/>):\n`' + danbooru_url_begin + 'YOURIMAGEURLHERE' + danbooru_url_mid + a + '`'
    return '<' + user_input + '>\n\n<' + urllib.parse.unquote(a) + '>' + str(reacting_to_embed)