server {
    listen 80;
    server_name _;

    root /usr/share/nginx/html;
    index index.html;

    # SPA 路由支持
    location / {
        try_files $uri $uri/ /index.html;
    }

    # API 代理
    location /api/ {
        proxy_pass http://backend:8004/api/;
        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_read_timeout 300s;
    }

    # 健康检查
    location /health {
        proxy_pass http://backend:8004/health;
    }

    # WebSocket (VNC)
    location /ws/ {
        proxy_pass http://backend:8004/ws/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_read_timeout 3600s;
        proxy_send_timeout 3600s;
    }
}