"""
待办事项模型
"""
from datetime import datetime
from typing import Optional
from sqlmodel import SQLModel, Field, Relationship
from .user import User


class Todo(SQLModel, table=True):
    """待办事项表"""
    __tablename__ = "todos"
    
    id: Optional[int] = Field(default=None, primary_key=True)
    title: str = Field(max_length=200)
    done: bool = Field(default=False)
    created_at: datetime = Field(default_factory=datetime.now)
    user_id: int = Field(foreign_key="users.id", index=True)
    
    # 关系（可选，用于ORM查询）
    user: Optional[User] = Relationship()