server {
    listen 80;
    server_name math-questions.chunsunqiuzhu.com;
    
    # 重定向 HTTP 到 HTTPS
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl http2;
    server_name math-questions.chunsunqiuzhu.com;

    # SSL 证书配置
    ssl_certificate /etc/nginx/ssl/cert.pem;
    ssl_certificate_key /etc/nginx/ssl/key.pem;
    
    # SSL 优化配置
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;

    # 安全头
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;

    # 日志
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    # 反向代理到应用
    location / {
        proxy_pass http://math-questions:8100;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        
        # WebSocket 支持（如果需要）
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        
        # 超时设置
        proxy_connect_timeout 300s;
        proxy_send_timeout 300s;
        proxy_read_timeout 300s;
    }

    # 静态文件缓存（如果有）
    location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
        proxy_pass http://math-questions:8100;
        expires 30d;
        add_header Cache-Control "public, immutable";
    }
}