"""Availability repository for database queries."""

from datetime import date

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

from models import Availability


class AvailabilityRepository:
    """Repository for availability-related database queries."""

    def __init__(self, db: AsyncSession):
        self.db = db

    async def get_by_date_range(
        self, from_date: date, to_date: date
    ) -> list[Availability]:
        """Get availability slots for a date range."""
        result = await self.db.execute(
            select(Availability)
            .where(and_(Availability.date >= from_date, Availability.date <= to_date))
            .order_by(Availability.date, Availability.start_time)
        )
        return list(result.scalars().all())

    async def get_by_date(self, target_date: date) -> list[Availability]:
        """Get availability slots for a specific date."""
        result = await self.db.execute(
            select(Availability)
            .where(Availability.date == target_date)
            .order_by(Availability.start_time)
        )
        return list(result.scalars().all())

    async def delete_by_date(self, target_date: date) -> None:
        """Delete all availability for a specific date."""
        await self.db.execute(
            delete(Availability).where(Availability.date == target_date)
        )

    async def create(self, availability: Availability) -> Availability:
        """
        Create a new availability record.

        Args:
            availability: Availability instance to persist

        Returns:
            Created Availability record (flushed to get ID)
        """
        self.db.add(availability)
        await self.db.flush()
        return availability

    async def create_multiple(self, availabilities: list[Availability]) -> None:
        """
        Create multiple availability records in a single transaction.

        Args:
            availabilities: List of Availability instances to persist
        """
        for availability in availabilities:
            self.db.add(availability)
        await self.db.flush()

    async def commit(self) -> None:
        """Commit the current transaction."""
        await self.db.commit()