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from enum import Enum
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from typing import Any, Dict, List, Union
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#状态码，响应前端发送的某次请求，观察此次请求的结果，成功与否
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class StateCode(Enum):
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SUCCESS = 0
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NOT_AUTHORIZED = 1002
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PARAMS_ERROR = 1003
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USER_NOT_FOUND = 2001
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USER_ALREADY_EXISTS = 2002
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PASSWORD_INCORRECT = 2003
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MOBILE_CODE_ERROR = 2004
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ID_CARD_ERROR = 2005
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BANK_CARD_ERROR = 2006
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MOBILE_ERROR = 2007
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ORDER_PAY_ERROR = 3001
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#状态信息，响应给前端作出相应提示
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STATE_MESSAGES = {
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StateCode.SUCCESS: "OK",
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StateCode.PARAMS_ERROR: "缺少参数",
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StateCode.USER_NOT_FOUND: "用户不存在，操作错误",
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StateCode.NOT_AUTHORIZED: "未登录",
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StateCode.USER_ALREADY_EXISTS: "用户已存在",
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StateCode.PASSWORD_INCORRECT: "用户名或密码错误",
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StateCode.MOBILE_CODE_ERROR: "验证码错误",
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StateCode.ID_CARD_ERROR: "身份证号验证失败",
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StateCode.MOBILE_ERROR: "手机号格式有误",
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StateCode.BANK_CARD_ERROR: "银行卡验证错误",
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StateCode.ORDER_PAY_ERROR: "支付失败"
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}
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#返回一个json格式的数据，主要是为了和前端统一数据格式，包含三个部分，上面的状态码，响应信息，返回的数据
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def create_response(
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code: StateCode,
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message: str = None,
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data: Union[Dict[str, Any], List[Dict[str, Any]], Any] = None
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) -> Dict[str, Any]:
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"""
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创建统一的返回格式。
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:param code: ErrorCode 错误码
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:param message: 错误信息，可选。如果不传递则使用默认的错误信息
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:param data: 包含单个或多个 Presenter 转换后的数据。单个使用 dict，多个使用 list
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:return: 返回统一格式的字典
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"""
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return {
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"code": code.value,
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"msg": message or STATE_MESSAGES.get(code, "Unknown error"),
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"data": data
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}
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