from rest_framework.exceptions import APIException
from rest_framework import status

class ExternalAPIError(APIException):
    """外部 API 调用错误"""
    status_code = status.HTTP_500_INTERNAL_SERVER_ERROR
    default_detail = '外部 API 调用失败'
    default_code = 'external_api_error'

    def __init__(self, detail=None, code=None):
        if detail is None:
            detail = self.default_detail
        if code is None:
            code = self.default_code
        super().__init__(detail, code)