from pydantic import BaseModel, Field
from typing import List, Optional, Any
from datetime import datetime

class StandardMessage(BaseModel):
    """全平台通用的输入消息协议"""
    platform: str = "qianniu"        # 来源平台：qianniu, wechat, feishu, console
    msg_id: str                      # 消息唯一ID
    user_id: str                     # 发送者唯一ID
    user_name: str = ""              # 发送者昵称
    content: str                     # 消息文本内容
    image_urls: List[str] = []       # 提取出来的图片链接
    acc_id: str = ""                 # 商家/店铺账号ID
    acc_type: str = ""               # 平台类型标识
    timestamp: datetime = Field(default_factory=datetime.now)
    raw_data: Any = None             # 原始消息体（仅供调试或特殊逻辑备查）

    # 扩展字段：针对电商场景
    goods_name: Optional[str] = None
    goods_order: Optional[str] = None

class StandardResponse(BaseModel):
    """大脑给出的通用回复协议"""
    reply_content: str               # 回复文本或图片URL
    msg_type: int = 0                # 0: 文本, 1: 图片, 2: 撤回, 9: 转人工
    should_reply: bool = True        # 是否需要发送
    need_transfer: bool = False      # 是否触发转人工
    transfer_group: str = ""         # 转人工的分组ID
    metadata: dict = {}              # 额外元数据（如埋点、调试信息）