# -*- coding: utf-8 -*-
import urllib.request, re, ssl

def check_wechat_card(url: str):
    headers = {
        'User-Agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 16_0 like Mac OS X) '
                      'AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 '
                      'MicroMessenger/8.0.38(0x1800262c) NetType/WIFI'
    }
    ctx = ssl.create_default_context()
    ctx.check_hostname = False
    ctx.verify_mode = ssl.CERT_NONE
    
    # 1. 抓取目标页面 HTML
    req = urllib.request.Request(url, headers=headers)
    with urllib.request.urlopen(req, context=ctx, timeout=15) as resp:
        html = resp.read().decode('utf-8', errors='ignore')
        
    # 2. 提取 Open Graph 元标签 (兼容 property 与 name 两种书写习惯)
    og_data = {}
    pattern = re.compile(r']*(?:property|name)=["']og:([a-zA-Z0-9_:]+)["']\s+content=["'](.*?)["']', re.I)
    for tag, val in pattern.findall(html):
        og_data[tag.lower()] = val.strip()
        
    print(f"=== 诊断结果: {url} ===")
    print(f"📌 og:title       : {og_data.get('title', '【缺失 ❌】')}")
    print(f"📝 og:description : {og_data.get('description', '【缺失 ❌】')}")
    print(f"🖼️ og:image       : {og_data.get('image', '【缺失 ❌】')}")
    
    # 3. 检测封面图是否能够被微信抓取节点畅通加载
    img_url = og_data.get('image')
    if not img_url:
        print("❌ 致命缺陷: 未检测到 og:image，微信将无法显示卡片大图！")
        return
        
    if not img_url.startswith('https://'):
        print("⚠️ 警告: 图片非完整 HTTPS 地址，部分微信版本将直接丢弃封面！")
        
    img_req = urllib.request.Request(img_url, headers=headers)
    try:
        with urllib.request.urlopen(img_req, context=ctx, timeout=10) as img_resp:
            status = img_resp.status
            size = len(img_resp.read())
            c_type = img_resp.headers.get('Content-Type')
            print(f"✅ 图片可访问 (HTTP {status}) | 大小: {size} 字节 | 类型: {c_type}")
    except Exception as e:
        print(f"❌ 封面图片访问失败: {e}")

# 执行检测示例
if __name__ == '__main__':
    target = 'https://www.1000000jia.cn/index.php/xinw/post/detail?id=1235'
    check_wechat_card(target)