from __future__ import annotations

from datetime import datetime

from sqlalchemy import DateTime, func
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


class Base(DeclarativeBase):
    pass


class TimestampMixin:
    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), nullable=False)
    updated_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now(), onupdate=func.now(), nullable=False)


class SoftDeleteMixin:
    is_deleted: Mapped[int] = mapped_column(default=0, nullable=False)