from datetime import datetime, timezone
from typing import Optional

from sqlmodel import Field, SQLModel


class User(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    username: str = Field(index=True, unique=True)
    password_hash: str
    is_admin: bool = Field(default=False)
    created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))