server {
    listen 80;
    server_name localhost;
    root /usr/share/nginx/html;
    index index.html;

    # Gzip 压缩
    gzip on;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml;
    gzip_min_length 1000;

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

    # API 代理
    location /api/ {
        proxy_pass http://api:8000/api/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        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_cache_bypass $http_upgrade;
        proxy_read_timeout 300;
        proxy_connect_timeout 300;
        proxy_send_timeout 300;
    }

    # 静态资源代理（必须用 ^~ 防止被后面的 regex 缓存规则抢走，导致 /static/* 返回 404）
    location ^~ /static/ {
        proxy_pass http://api:8000/static/;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }

    # 缓存前端构建产物（仅 /assets/，避免影响 /static/ 代理）
    location ~* ^/assets/.*\.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2)$ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }
}