from __future__ import annotations

import uuid
from datetime import datetime, timezone

from sqlalchemy import Boolean, DateTime
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


def utcnow() -> datetime:
    return datetime.now(timezone.utc)


class Base(DeclarativeBase):
    pass


class BaseModelMixin:
    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=utcnow)
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), default=utcnow, onupdate=utcnow
    )
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)