"""Abstract repository interface for VacationDays.

Adds entity-specific queries on top of the generic CRUD contract. Concrete
implementations live in app/repositories_impl/<backend>/.
"""

from abc import abstractmethod
from uuid import UUID

from app.entities.vacation_days import VacationDays
from app.repositories.base import Repository


class VacationDaysRepository(Repository[VacationDays]):
    @abstractmethod
    async def get_by_parent_year(self, personal_data_uuid: UUID, year: int) -> VacationDays | None:
        """Return the entry for a given parent + year (UNIQUE), or None."""