# 敏感词过滤模块
import re
import requests
import json
import logging


class ReplyFilter:
    sensitive_words = []
    mask = "*"

    # 默认值( 兼容性考虑 )
    baidu_check = False
    baidu_api_key = ""
    baidu_secret_key = ""
    inappropriate_message_tips = "[百度云]请珍惜机器人，当前返回内容不合规"

    def __init__(self, sensitive_words: list, mask: str = "*"):
        self.sensitive_words = sensitive_words
        self.mask = mask
        import config
        if hasattr(config, 'baidu_check') and hasattr(config, 'baidu_api_key') and hasattr(config, 'baidu_secret_key'):
            self.baidu_check = config.baidu_check
            self.baidu_api_key = config.baidu_api_key
            self.baidu_secret_key = config.baidu_secret_key
            self.inappropriate_message_tips = config.inappropriate_message_tips

    def is_illegal(self, message: str) -> bool:
        processed = self.process(message)
        if processed != message:
            return True
        return False

    def process(self, message: str) -> str:

        # 本地关键词屏蔽
        for word in self.sensitive_words:
            match = re.findall(word, message)
            if len(match) > 0:
                for i in range(len(match)):
                    message = message.replace(match[i], self.mask * len(match[i]))

        # 百度云审核
        if self.baidu_check:

            # 百度云审核URL
            baidu_url = "https://aip.baidubce.com/rest/2.0/solution/v1/text_censor/v2/user_defined?access_token=" + \
                str(requests.post("https://aip.baidubce.com/oauth/2.0/token", 
                      params={"grant_type": "client_credentials", 
                              "client_id": self.baidu_api_key,
                              "client_secret": self.baidu_secret_key}).json().get("access_token"))

            # 百度云审核
            payload = "text=" + message
            logging.info("向百度云发送:" + payload)
            headers = {'Content-Type': 'application/x-www-form-urlencoded', 'Accept': 'application/json'}

            if isinstance(payload, str):
                payload = payload.encode('utf-8')

            response = requests.request("POST", baidu_url, headers=headers, data=payload)
            response_dict = json.loads(response.text)

            if "error_code" in response_dict:
                error_msg = response_dict.get("error_msg")
                logging.warning(f"百度云判定出错，错误信息：{error_msg}")
                conclusion = f"百度云判定出错，错误信息：{error_msg}\n以下是原消息：{message}"
            else:
                conclusion = response_dict["conclusion"]
                if conclusion in ("合规"):
                    logging.info(f"百度云判定结果：{conclusion}")
                    return message
                else:
                    logging.warning(f"百度云判定结果：{conclusion}")
                    conclusion = self.inappropriate_message_tips
            # 返回百度云审核结果
            return conclusion
        
        return message