# Nginx 站点配置：SPA 路由回退 + /api 反向代理到后端容器
server {
    listen       80;
    server_name  _;

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

    # 静态资源压缩
    gzip on;
    gzip_min_length 1k;
    gzip_types text/plain text/css application/javascript application/json image/svg+xml;

    # 前端单页应用：刷新子路由时回退到 index.html
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 后端接口：转发到 docker-compose 中的 backend 服务
    location /api/ {
        proxy_pass         http://backend:8080;
        proxy_http_version 1.1;
        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_read_timeout 60s;
    }

    # 带哈希的静态资源长期缓存
    location /assets/ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800";
    }
}