server {
    listen 80;
    server_name _;

    client_max_body_size 100m;
    root /usr/share/nginx/html;
    index index.html;

    add_header X-Robots-Tag "noindex, nofollow" always;

    # 公开构建中的 sw.js 只负责注销该域名历史遗留的后台 PWA。
    location = /sw.js {
        add_header Cache-Control "no-store, no-cache, must-revalidate";
        try_files $uri =404;
    }

    location = /index.html {
        add_header Cache-Control "no-store, no-cache, must-revalidate";
        try_files $uri =404;
    }

    # 员工域名只允许入职公开接口。内部后端路由不包含外层 /api。
    location ^~ /api/open/onboarding/ {
        proxy_pass http://onboardx-api-svc:5566/open/onboarding/;
        proxy_http_version 1.1;
        proxy_request_buffering off;
        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;
        proxy_connect_timeout 60s;
        proxy_read_timeout 300s;
        proxy_send_timeout 300s;
    }

    # 公开域名拒绝系统、后台业务及其他 API。
    location ^~ /api/ {
        return 404;
    }

    # Hash 路由的有效链接在服务器看来也是根路径，必须返回公开版 index.html。
    location / {
        try_files $uri $uri/ /index.html;
    }
}