# services/videos.py
from sqlalchemy import select
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy.orm import selectinload

from models import Video


async def load_video_with_relations(db: AsyncSession, video_id: int) -> Video:
    stmt = (
        select(Video)
        .options(selectinload(Video.channel), selectinload(Video.playlist))
        .where(Video.id == video_id)
    )
    return (await db.execute(stmt)).scalar_one()