#!/usr/bin/env python
# -*- coding:utf-8 -*-
# author: liuyu
# date: 2022/2/7
import logging

from captcha.helpers import captcha_image_url
from captcha.models import CaptchaStore

from common.core.sysconfig import Config
from common.libs.storage.localApi import LocalStorage

logger = logging.getLogger(__name__)


class CaptchaAuth(object):
    def __init__(self, captcha_key='', g_type=1):
        self.g_type = g_type
        self.captcha_key = captcha_key
        self.random_char_fun = self.__generator()

    def __generator(self):
        if self.g_type == 1:
            # 随机字符串
            return 'captcha.helpers.random_char_challenge'
        elif self.g_type == 2:
            # 数学运算
            return 'captcha.helpers.math_challenge'
        return None

    def __get_captcha_obj(self):
        return CaptchaStore.objects.filter(hashkey=self.captcha_key).first()

    def generate(self):
        self.captcha_key = CaptchaStore.generate_key(self.random_char_fun)
        captcha_image = captcha_image_url(self.captcha_key)
        captcha_obj = self.__get_captcha_obj()
        code_length = 0
        if captcha_obj:
            code_length = len(captcha_obj.response)
        local_storage = LocalStorage(**Config.IOS_PMFILE_DOWNLOAD_DOMAIN)
        return {"captcha_image": "/".join([local_storage.get_base_url(), captcha_image.strip("/"), '']),
                "captcha_key": self.captcha_key,
                "length": code_length}

    def valid(self, verify_code):
        captcha_obj = self.__get_captcha_obj()
        logger.info(f"captcha_key:{self.captcha_key} verify_code:{verify_code}  challenge:{captcha_obj}")
        if captcha_obj:
            if self.captcha_key and verify_code and verify_code.strip(" ").lower() == captcha_obj.response.lower():
                return True
        return False