server {
    listen 80;
    server_name your-domain.com;

    # 前端静态资源 (Music Canvas)
    location / {
        proxy_pass http://127.0.0.1:7481;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    # 同步服务 API 代理
    # 将 /api/kv/... 转发到 sync-service 的 7482 端口
    # 注意：这里去掉了 /api 前缀，因为 sync-service 直接监听 /kv
    location /api/ {
        proxy_pass http://127.0.0.1:7482/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        
        # 允许跨域 (如果前端和后端不在同一个域)
        add_header 'Access-Control-Allow-Origin' '*';
        add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
        add_header 'Access-Control-Allow-Headers' 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
    }
}