"""Business logic for PersonalData (parent profile) settings.

Routers call services, not repositories directly (see child_service.py, the
reference service). This currently only covers the settings-update path
(`salary_type`, `employment_status`, `min_vacation_days_per_year`) — creation
lives in AuthService/WorkspaceService, which construct PersonalData directly
as part of registration/invite flows.
"""

from uuid import UUID

from app.entities.personal_data import PersonalData
from app.repositories.personal_data_repository import PersonalDataRepository
from app.utils.errors import NotFoundError, ValidationError

_MIN_VACATION_DAYS_FLOOR = 0
_MIN_VACATION_DAYS_CEILING = 60  # generous upper bound; real cap is entitlement-dependent


class PersonalDataService:
    def __init__(self, repo: PersonalDataRepository) -> None:
        self._repo = repo

    async def get(self, personal_data_uuid: UUID) -> PersonalData:
        entity = await self._repo.get_by_id(personal_data_uuid)
        if entity is None:
            raise NotFoundError(f"PersonalData {personal_data_uuid} not found")
        return entity

    async def update(
        self,
        personal_data_uuid: UUID,
        salary_type: str | None = None,
        employment_status: str | None = None,
        min_vacation_days_per_year: int | None = None,
    ) -> PersonalData:
        """Partial update. Raises ValidationError/NotFoundError."""
        entity = await self.get(personal_data_uuid)

        if salary_type is not None:
            entity.salary_type = salary_type
        if employment_status is not None:
            entity.employment_status = employment_status
        if min_vacation_days_per_year is not None:
            _validate_min_vacation_days(min_vacation_days_per_year)
            entity.min_vacation_days_per_year = min_vacation_days_per_year

        return await self._repo.update(personal_data_uuid, entity)


def _validate_min_vacation_days(value: int) -> None:
    if not _MIN_VACATION_DAYS_FLOOR <= value <= _MIN_VACATION_DAYS_CEILING:
        raise ValidationError(
            f"min_vacation_days_per_year must be between {_MIN_VACATION_DAYS_FLOOR} "
            f"and {_MIN_VACATION_DAYS_CEILING}"
        )