"""
自定义异常类和全局状态码定义
"""
from typing import Optional


class BaseAPIException(Exception):
    """基础API异常类"""
    def __init__(self, status_code: int, detail: str, code: Optional[int] = None):
        self.status_code = status_code
        self.detail = detail
        self.code = code or status_code
        super().__init__(self.detail)


class BusinessException(BaseAPIException):
    """业务异常"""
    def __init__(self, detail: str, status_code: int = 400, code: Optional[int] = None):
        super().__init__(status_code, detail, code)


class UnauthorizedException(BaseAPIException):
    """未授权异常"""
    def __init__(self, detail: str = "未经过系统授权", code: Optional[int] = None):
        super().__init__(401, detail, code or 401)


class ForbiddenException(BaseAPIException):
    """权限不足异常"""
    def __init__(self, detail: str = "无权限访问", code: Optional[int] = None):
        super().__init__(403, detail, code or 403)


class NotFoundException(BaseAPIException):
    """资源不存在异常"""
    def __init__(self, detail: str = "资源不存在", code: Optional[int] = None):
        super().__init__(404, detail, code or 404)


class ValidationException(BaseAPIException):
    """参数验证异常"""
    def __init__(self, detail: str = "参数验证失败", code: Optional[int] = None):
        super().__init__(400, detail, code or 400)


class InternalServerException(BaseAPIException):
    """服务器内部错误异常"""
    def __init__(self, detail: str = "服务器内部错误", code: Optional[int] = None):
        super().__init__(500, detail, code or 500)


# 全局状态码定义
class StatusCode:
    """全局状态码定义"""
    # 成功
    SUCCESS = 200
    
    # 客户端错误
    BAD_REQUEST = 400  # 请求参数错误
    UNAUTHORIZED = 401  # 未授权
    FORBIDDEN = 403  # 权限不足
    NOT_FOUND = 404  # 资源不存在
    METHOD_NOT_ALLOWED = 405  # 方法不允许
    NOT_ACCEPTABLE = 406  # 请求头不支持
    REQUEST_TIMEOUT = 408  # 请求超时
    CONFLICT = 409  # 资源冲突
    PAYLOAD_TOO_LARGE = 413  # 文件过大
    
    # 服务器错误
    INTERNAL_SERVER_ERROR = 500  # 服务器内部错误
    BAD_GATEWAY = 502  # 网关错误
    SERVICE_UNAVAILABLE = 503  # 服务不可用
    GATEWAY_TIMEOUT = 504  # 网关超时
    
    # 业务错误码（自定义）
    INVALID_TOKEN = 600  # 无效的登录信息
    TOKEN_EXPIRED = 601  # Token过期


# 全局错误消息定义
class ErrorMessage:
    """全局错误消息定义"""
    # 认证相关
    UNAUTHORIZED = "未经过系统授权"
    INVALID_TOKEN = "无效的登录信息"
    TOKEN_EXPIRED = "当前登录已过期，请重新登录"
    
    # 权限相关
    FORBIDDEN = "无权限访问"
    NO_OWNER_PERMISSION = "无该货主权限！"
    
    # 资源相关
    NOT_FOUND = "资源不存在"
    FILE_NOT_FOUND = "文件不存在"
    
    # 参数相关
    MISSING_PARAM = "缺少必要参数"
    INVALID_PARAM = "参数验证失败"
    INVALID_HEADER = "请求的头部不支持"
    
    # 业务相关
    BUCKET_CONFIG_FAILED = "获取桶配置失败"
    UPLOAD_FAILED = "上传文件失败"
    DOWNLOAD_FAILED = "下载文件失败"
    DELETE_FAILED = "删除失败"
    CREATE_FOLDER_FAILED = "创建文件夹失败"
    LIST_FILES_FAILED = "列出文件失败"
    
    # 系统相关
    INTERNAL_ERROR = "服务器内部错误"
    REQUEST_FAILED = "请求失败"
    INVALID_RESPONSE = "无效的JSON响应"