from datetime import UTC, datetime

from sqlalchemy import Column, DateTime


class TimestampMixin:
    """Mixin to add created_at and updated_at timestamps to models"""

    created_at = Column(DateTime, default=datetime.now(UTC), nullable=False)
    updated_at = Column(
        DateTime,
        default=datetime.now(UTC),
        onupdate=datetime.now(UTC),
        nullable=False,
    )