from datetime import datetime
from typing import Optional

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

from app.db.base import Base


class BotGroup(Base):
    """A class/department group the bot was added to (every member of it can see the bot)."""

    __tablename__ = "bot_groups"

    chat_id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=False)
    title: Mapped[Optional[str]] = mapped_column(String(128))
    active: Mapped[bool] = mapped_column(Boolean, default=True)
    added_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())