import logging
import requests
from django.conf import settings

from .base import BaseCaptcha

logger = logging.getLogger(__name__)


class Captcha(BaseCaptcha):
    """
    Ref: https://developers.google.com/recaptcha/docs/verify
    """

    def __init__(self, *args, **kwargs):
        self.secret = getattr(settings, 'CAPTCHA_RE_SECRET_KEY', None)
        self.validate_url = 'https://www.recaptcha.net/recaptcha/api/siteverify'
        return super(Captcha, self).__init__(*args, **kwargs)

    def generate(self, *args, **kwargs):
        # Generated by google.
        pass

    def verify(self, ip, re_token, hostname=None):
        validate_data = {
            'secret': self.secret,
            'response': re_token,
            # 'remoteip': ip
        }
        is_passed = False
        google_res = None

        try:
            google_res = requests.post(
                self.validate_url,
                data=validate_data,
                timeout=2
            ).json()
            if google_res.get('success') and google_res.get('score') > self._socre_threshold:
                is_passed = True
        except Exception as e:
            logger.error(e)
            is_passed = True
            google_res = str(e)
        logger.info('Google reCAPTCHA result: {}, passed: {}'.format(google_res, is_passed))
        return is_passed

    @property
    def _socre_threshold(self):
        return getattr(settings, 'GOOGLE_RE_THRESHOLD', 0.5)