import uuid
from datetime import datetime, timezone

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

from app.db import Base


class User(Base):
    __tablename__ = "users"

    id: Mapped[uuid.UUID] = mapped_column(primary_key=True, default=uuid.uuid4)
    username: Mapped[str] = mapped_column(String(32), unique=True, index=True)
    password_hash: Mapped[str] = mapped_column(String(255))
    email: Mapped[str | None] = mapped_column(String(255), nullable=True)
    created_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=lambda: datetime.now(timezone.utc)
    )