# Nginx 静态文件服务 + 智能代理

server {
    # 静态资源根目录
    root /usr/share/nginx/html;

    # 前端资源路径别名（/sys/ -> /）
    location /sys/ {
        alias /usr/share/nginx/html/;
        try_files $uri $uri/ =404;
    }

    # 根路径固定进入前端，避免落到后端登录页
    location = / {
        return 302 /sys/;
    }

    index index.html;

    # SSL 配置
    listen 443 ssl;
    ssl_certificate /etc/nginx/ssl/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;

    # 1. 先尝试作为静态文件查找
    location / {
        try_files $uri $uri/ @proxy;
    }

    # 2. 无法找到的请求（API路径）代理到后端
    location @proxy {
        # 判断URI最后一段是否有扩展名
        # 有扩展名返回404，无扩展名则代理
        if ($uri ~ \.[^./]+$) {
            return 404;
        }
        
        proxy_pass http://116.204.74.41:8000;
        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_connect_timeout 30s;
        proxy_send_timeout 30s;
        proxy_read_timeout 30s;
    }
}