from datetime import datetime
from typing import Optional

from pydantic import BaseModel


class TodoBase(BaseModel):
    title: str
    description: Optional[str] = None
    completed: bool = False


class TodoCreate(TodoBase):
    pass


class TodoUpdate(BaseModel):
    title: Optional[str] = None
    description: Optional[str] = None
    completed: Optional[bool] = None


class Todo(TodoBase):
    id: int
    owner_id: int
    created_at: datetime
    updated_at: Optional[datetime] = None

    model_config = {
        "from_attributes": True
    }