server {
    listen 80;
    server_name 150.158.236.152;  # 替换为你的服务器 IP/域名
    client_max_body_size 100M;  # 全局生效的文件上传大小限制

    # 日志配置
    access_log /var/log/nginx/front-access.log main;
    error_log /var/log/nginx/front-error.log warn;

    # gzip 压缩（保留原有配置）
    gzip on;
    gzip_min_length 1k;
    gzip_comp_level 9;
    gzip_types text/plain text/css text/javascript application/json application/javascript application/x-javascript application/xml;
    gzip_vary on;
    gzip_disable "MSIE [1-6]\.";

    # 前端静态文件根目录（适配 Docker 挂载）
    root /usr/share/nginx/html;
    include /etc/nginx/mime.types;

    # 静态资源缓存优化
    location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
        expires 7d;
        add_header Cache-Control "public, max-age=604800";
        access_log off;
    }

    # SPA 路由兜底
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 错误页适配 SPA
    error_page 404 500 502 503 504 /index.html;

    # 后端 API 代理（替换为实际地址）
    location /api {
        rewrite ^/api(.*)$ $1 break;
        proxy_pass http://150.158.236.152:5221;  # 你的 Flask 后端地址
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}