import uuid
from datetime import datetime, UTC

from sqlalchemy import String, Text
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


def uuid7() -> str:
    return str(uuid.uuid4())


class Base(DeclarativeBase):
    pass


class UUIDMixin:
    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=uuid7)


class TenantMixin:
    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)


class TimestampMixin:
    created_at: Mapped[str] = mapped_column(
        Text, default=lambda: datetime.now(UTC).isoformat()
    )
    updated_at: Mapped[str] = mapped_column(
        Text,
        default=lambda: datetime.now(UTC).isoformat(),
        onupdate=lambda: datetime.now(UTC).isoformat(),
    )