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82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
from decorators.database import begin_session
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from models.platform import Platform
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from models.rom import Rom
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from sqlalchemy import Select, delete, or_, select
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from sqlalchemy.orm import Session
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from .base_handler import DBBaseHandler
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class DBPlatformsHandler(DBBaseHandler):
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@begin_session
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def add_platform(
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self,
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platform: Platform,
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session: Session,
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) -> Platform:
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platform = session.merge(platform)
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session.flush()
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new_platform = session.scalar(
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select(Platform).filter_by(id=platform.id).limit(1)
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)
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if not new_platform:
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raise ValueError("Could not find newlyewly created platform")
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return new_platform
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@begin_session
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def get_platform(self, id: int, *, session: Session) -> Platform | None:
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return session.scalar(select(Platform).filter_by(id=id).limit(1))
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@begin_session
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def get_platforms(self, *, session: Session) -> Select[tuple[Platform]]:
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return (
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session.scalars(select(Platform).order_by(Platform.name.asc())) # type: ignore[attr-defined]
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.unique()
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.all()
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)
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@begin_session
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def get_platform_by_fs_slug(
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self, fs_slug: str, session: Session
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) -> Platform | None:
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return session.scalar(select(Platform).filter_by(fs_slug=fs_slug).limit(1))
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@begin_session
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def delete_platform(self, id: int, session: Session) -> None:
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# Remove all roms from that platforms first
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session.execute(
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delete(Rom)
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.where(Rom.platform_id == id)
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.execution_options(synchronize_session="evaluate")
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)
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session.execute(
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delete(Platform)
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.where(Platform.id == id)
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.execution_options(synchronize_session="evaluate")
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)
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@begin_session
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def purge_platforms(
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self, fs_platforms: list[str], session: Session
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) -> Select[tuple[Platform]]:
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purged_platforms = (
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session.scalars(
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select(Platform)
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.order_by(Platform.name.asc())
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.where(
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or_(Platform.fs_slug.not_in(fs_platforms), Platform.slug.is_(None))
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)
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) # type: ignore[attr-defined]
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.unique()
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.all()
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)
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session.execute(
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delete(Platform)
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.where(or_(Platform.fs_slug.not_in(fs_platforms), Platform.slug.is_(None))) # type: ignore[attr-defined]
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.execution_options(synchronize_session="fetch")
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)
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return purged_platforms
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