server {
    listen 80 default_server;
    server_name _;

    root /usr/share/nginx/html;
    charset utf-8;

    # index.html 软链由 Dockerfile 创建，指向 羚牛车辆数据中心.html
    index index.html 羚牛车辆数据中心.html;

    # gzip
    gzip on;
    gzip_min_length 1k;
    gzip_comp_level 6;
    gzip_vary on;
    gzip_types
        text/plain text/css text/javascript
        application/javascript application/json application/xml
        image/svg+xml;

    # SPA hash 路由 — 任意未命中文件都回到 index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 静态资源缓存 7 天
    location ~* \.(svg|png|jpg|jpeg|gif|webp|woff2?|ttf|eot)$ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800, immutable";
    }

    # JSX/JS/CSS 短缓存（方便热更新）
    location ~* \.(jsx|js|css)$ {
        expires 1h;
        add_header Cache-Control "public, max-age=3600";
    }

    # HTML 不缓存
    location ~* \.html$ {
        expires -1;
        add_header Cache-Control "no-cache, no-store, must-revalidate";
    }

    # 健康检查
    location = /healthz {
        access_log off;
        return 200 "ok\n";
        add_header Content-Type text/plain;
    }

    # 隐藏 nginx 版本
    server_tokens off;
}