from sqlmodel import SQLModel, Field, Relationship
from typing import TYPE_CHECKING, Optional, List
from datetime import datetime
import uuid

if TYPE_CHECKING:
    from models.task import Task

class UserBase(SQLModel):
    email: str = Field(unique=True, nullable=False)

class User(UserBase, table=True):
    id: uuid.UUID = Field(default_factory=uuid.uuid4, primary_key=True)
    hashed_password: str = Field(nullable=False)
    created_at: datetime = Field(default_factory=datetime.utcnow)
    updated_at: datetime = Field(default_factory=datetime.utcnow)

    # Relationship to Tasks
    tasks: List["Task"] = Relationship(back_populates="user")