from datetime import datetime, timezone

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

from bot.db.base import Base


def utc_now() -> datetime:
    return datetime.now(timezone.utc)


class User(Base):
    __tablename__ = "users"

    id: Mapped[int] = mapped_column(primary_key=True)
    telegram_id: Mapped[int] = mapped_column(BigInteger, unique=True, index=True)
    username: Mapped[str | None] = mapped_column(String(255), nullable=True)
    first_name: Mapped[str | None] = mapped_column(String(255), nullable=True)
    last_name: Mapped[str | None] = mapped_column(String(255), nullable=True)
    is_admin: Mapped[bool] = mapped_column(Boolean, default=False)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utc_now)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True),
        default=utc_now,
        onupdate=utc_now,
    )