from sqlalchemy import select, delete
from sqlalchemy.ext.asyncio import AsyncSession

from dutylog.infrastructure.database.models.hours_transaction import HoursTransaction


class HoursTransactionsDAO:
    def __init__(self, session: AsyncSession):
        self.session = session

    async def get_by_id(self, transaction_id: int) -> HoursTransaction | None:
        result = await self.session.execute(
            select(HoursTransaction).where(HoursTransaction.id == transaction_id)
        )
        return result.scalar_one_or_none()

    async def get_all(self) -> list[HoursTransaction]:
        result = await self.session.execute(
            select(HoursTransaction).order_by(HoursTransaction.created_at.desc())
        )
        return list(result.scalars().all())

    async def get_by_resident_id(self, resident_id: int) -> list[HoursTransaction]:
        result = await self.session.execute(
            select(HoursTransaction)
            .where(HoursTransaction.resident_id == resident_id)
            .order_by(HoursTransaction.created_at.desc())
        )
        return list(result.scalars().all())

    async def create(self, transaction: HoursTransaction) -> HoursTransaction:
        self.session.add(transaction)
        await self.session.commit()
        await self.session.refresh(transaction)
        return transaction

    async def delete(self, transaction_id: int) -> None:
        await self.session.execute(
            delete(HoursTransaction).where(HoursTransaction.id == transaction_id)
        )
        await self.session.commit()