from datetime import datetime
from sqlalchemy import DateTime, func
from sqlalchemy.orm import Mapped, mapped_column
from app.core.database import Base

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)