from sqlalchemy import and_, select, update

from common.database.db_session_manager import DB_SESSION_MNG
from common.database.model.models import place_songs
from common.enums import SongStatus
from common.utils.gtime import GTime


class SongCRUD:
    """place_songs 접근."""

    async def insert(self, db, row):
        return await DB_SESSION_MNG.insert(db, row)

    async def update(self, db, song_id, data: dict):
        return await DB_SESSION_MNG.add_with_rowcount(
            db,
            update(place_songs)
            .where(place_songs.song_id == song_id, place_songs.deleted == False)  # noqa: E712
            .values(**data, updated_at=GTime.UTC()),
        )

    async def latest_ready(self, db, place_id):
        """이 업장의 **가장 최근에 완성된** 곡 하나."""
        return await DB_SESSION_MNG.execute(
            db,
            select(place_songs)
            .where(and_(
                place_songs.place_id == place_id,
                place_songs.status == SongStatus.READY.value,
                place_songs.deleted == False,  # noqa: E712
            ))
            .order_by(place_songs.created_at.desc())
            .limit(1),
        )