import datetime
from typing import Literal

from pydantic import BaseModel


class CreateChatRequest(BaseModel):
    name: str


class SendMessageRequest(BaseModel):
    chat_id: int
    content: str


class ListMessagesRequest(BaseModel):
    chat_id: int
    from_date: datetime.datetime | None = None
    to_date: datetime.datetime | None = None
    order_by: Literal['desc'] | Literal['asc'] = 'desc'