from typing import List from pydantic import BaseModel class Message(BaseModel): role: str content: str class ChatCompletionRequest(BaseModel): messages: List[Message] user: str class ItemWeb(BaseModel): id: int name: str quantity: int price: float itemTotal: float class OrderWeb(BaseModel): customerName: str items: List[ItemWeb] totalAmount: float orderDate: str table: int class UserCodeRequest(BaseModel): user_code: str