from sqlalchemy import MetaData
from sqlalchemy.orm import DeclarativeBase, Mapped, declarative_mixin, mapped_column
import uuid
from sqlalchemy.dialects.postgresql import UUID

class Base(DeclarativeBase):
    metadata = MetaData()
    pass

@declarative_mixin
class UUIDPrimaryMixin:
    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)