import uuid
from datetime import UTC, datetime

from sqlalchemy import DateTime, Uuid
from sqlalchemy.orm import Mapped, mapped_column


def utcnow() -> datetime:
    return datetime.now(UTC)


class IdMixin:
    id: Mapped[uuid.UUID] = mapped_column(Uuid, primary_key=True, default=uuid.uuid4)


class TimestampMixin:
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
    updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow, onupdate=utcnow)