from django.utils.deprecation import MiddlewareMixin
from rest_framework.exceptions import ErrorDetail
from django.http import JsonResponse


class ResponseMiddleware(MiddlewareMixin):
    def process_response(self, request, response):
        """在每个响应返回给客户端之前自动调用"""
        if request.path.startswith('/equipmanager/'):
            # if isinstance(response, JsonResponse):
            #     return response
            status_code = response.status_code
            rsp_data = response.data
            if status_code == 200:
                response = JsonResponse(
                    status=200,
                    data={"code":status_code,"msg":"请求成功","data":rsp_data}
                )
            elif status_code == 400:
                if isinstance(rsp_data, dict):
                    try:
                        for key, value in rsp_data.items():
                            print(key, value, type(value[0]))
                            if value and isinstance(value, list):
                                value = value[0]
                                if isinstance(value, ErrorDetail):
                                    value = f"{key} {value}"
                            response = JsonResponse(
                                status=200, 
                                data={'msg': str(value),'code': status_code,'data': ""}
                            )
                            break
                    except Exception as e:
                        pass
            elif status_code == 404:
                response = JsonResponse(
                    status=200,
                    data={"code":status_code,"msg":"请求接口不存在","data":""}
                )
        return response


    def process_exception(self, request, exception):
        data = {
            'msg': str(exception),
            'code': 500,
            'data': ""
        }
        return JsonResponse(status=500, data=data)