"""
微信群发功能
建议使用企业微信
但需要管理员提供企业id以及secret信息
通过wechatpy库实现
"""
import core.logger as logging
import requests
import base64
import hashlib
import json
logger = logging.logger

class Wechat:
    def __init__(self, key: str):
        # 虽然config在根目录，但是取决于调用代码在哪
        # 只要启动代码文件在根目录，config就能找到
        self.key = key
        self.url = f"https://qyapi.weixin.qq.com/cgi-bin/webhook/send?key={self.key}"

    def send_text(self, text: str):
        """
        发送文本消息
        """
        data = {
            "msgtype": "text",
            "text": {"content": text}
        }
        response = requests.post(self.url, json=data)
        response.raise_for_status()
        return response.json()
    
    def send_markdown(self, text: str):
        """
        发送markdown消息
        """
        data = {
            "msgtype": "markdown_v2",
            "markdown_v2": {"content": text}
        }
        response = requests.post(self.url, json=data)
        response.raise_for_status()
        return response.json()
    
    def send_image(self, image_url: str):
        """
        发送图片消息
        """
        # data = {
        #     "msgtype": "image",
        #     "image": {"url": image_url}
        # }
        # response = requests.post(self.url, json=data)
        # return response.json()
        image_bytes = self.download_image(image_url)
        base64_str, md5_str = self.get_base64_and_md5(image_bytes)
        data = {
            "msgtype": "image",
            "image": {
                "base64": base64_str,
                "md5": md5_str,
            }
        }
        response = requests.post(self.url, json=data)
        response.raise_for_status()
        return response.json()

    def download_image(self, image_url):
        """下载图片并返回 bytes"""
        response = requests.get(image_url, timeout=10)
        response.raise_for_status()  # 抛出 HTTP 错误
        return response.content
    
    def get_base64_and_md5(self,image_bytes):
        """计算 Base64（不带 data: 前缀）和 MD5"""
        b64 = base64.b64encode(image_bytes).decode('utf-8')
        md5 = hashlib.md5(image_bytes).hexdigest()
        return b64, md5
    
    def send_file(self, file_url: str):
        """
        发送文件消息
        """
        data = {
            "msgtype": "file",
            "file": {"url": file_url}
        }
        response = requests.post(self.url, json=data)
        response.raise_for_status()
        return response.json()
    
    def send_news(self, news: list):
        """
        发送图文消息
        """
        data = {
            "msgtype": "news",
            "news": {"articles": news}
        }
        response = requests.post(self.url, json=data)
        response.raise_for_status()
        return response.json()