import uuid
from datetime import datetime
from typing import Any

from sqlalchemy import Boolean, Column, DateTime, String

from app.timeutil import utc_now_naive


class TimestampMixin:
    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
    updated_at = Column(
        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
    )


class SoftDeleteMixin:
    is_deleted = Column(Boolean, default=False, nullable=True)
    deleted_at = Column(DateTime, nullable=True)
    deleted_by = Column(String(50), nullable=True)

    def soft_delete(self, deleted_by_user: str = "system", **_: Any) -> None:
        """Мягкое удаление сущности.

        Дополнительные аргументы игнорируются, чтобы сохранить совместимость
        с вызовами из легаси-кода (reason, request и т.п.).
        """
        if self.is_deleted:
            return
        self.is_deleted = True
        self.deleted_at = utc_now_naive()
        self.deleted_by = deleted_by_user


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