server {
    listen 80;
    server_name your-domain.com;  # 修改为你的域名

    # Gzip 压缩
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_types text/plain text/css text/xml text/javascript application/x-javascript application/xml+rss application/json;

    # 前端静态文件
    location / {
        proxy_pass http://localhost:5500;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        
        # 缓存设置
        proxy_cache_valid 200 1d;
        proxy_cache_bypass $http_upgrade;
        add_header X-Cache-Status $upstream_cache_status;
    }

    # 后端 API
    location /api {
        proxy_pass http://localhost:3000;
        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_set_header X-Forwarded-Proto $scheme;
        proxy_cache_bypass $http_upgrade;
        
        # 超时设置
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }

    # 上传文件访问
    location /uploads {
        proxy_pass http://localhost:3000/uploads;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        
        # 缓存上传的文件
        expires 30d;
        add_header Cache-Control "public, immutable";
    }

    # 日志
    access_log /var/log/nginx/just-demo-access.log;
    error_log /var/log/nginx/just-demo-error.log;
}

# HTTPS 配置（使用 Let's Encrypt）
# server {
#     listen 443 ssl http2;
#     server_name your-domain.com;
# 
#     ssl_certificate /etc/letsencrypt/live/your-domain.com/fullchain.pem;
#     ssl_certificate_key /etc/letsencrypt/live/your-domain.com/privkey.pem;
#     ssl_protocols TLSv1.2 TLSv1.3;
#     ssl_ciphers HIGH:!aNULL:!MD5;
# 
#     # ... 其他配置同上
# }