"""用户表（预留多用户；MVP 用 APP_TOKEN 时为空）。"""
from __future__ import annotations

import uuid
from datetime import datetime

from sqlalchemy import DateTime, String, Uuid, func
from sqlalchemy.orm import Mapped, mapped_column

from db import Base


class User(Base):
    __tablename__ = "users"

    id: Mapped[uuid.UUID] = mapped_column(Uuid(as_uuid=True), primary_key=True, default=uuid.uuid4)
    username: Mapped[str] = mapped_column(String(64), unique=True, nullable=False)
    password_hash: Mapped[str] = mapped_column(String(255), nullable=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())