import json

from starlette.responses import Response


def api_response(data=None, code: int = 0, msg: str = '') -> Response:
    """统一生成API响应，保持既有code/msg/data协议。"""
    return Response(
        content=json.dumps(
            {'code': code, 'msg': msg, 'data': data},
            ensure_ascii=False,
            default=str,
        ),
        status_code=200 if code == 0 else code,
        media_type='application/json',
        headers={'Cache-Control': 'no-store'},
    )