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64 lines
2.1 KiB
Python
64 lines
2.1 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 delete, func, 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(self, platform: Platform, session: Session = None) -> Platform:
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return session.merge(platform)
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@begin_session
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def get_platforms(
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self, id: int | None = None, session: Session = None
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) -> Platform | list[Platform] | None:
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return (
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session.get(Platform, id)
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if id
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else (
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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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)
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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 = None
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) -> Platform | None:
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return session.scalars(
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select(Platform).filter_by(fs_slug=fs_slug).limit(1)
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).first()
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@begin_session
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def delete_platform(self, id: int, session: Session = None) -> 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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return 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 get_rom_count(self, platform_id: int, session: Session = None) -> int:
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return session.scalar(
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select(func.count()).select_from(Rom).filter_by(platform_id=platform_id)
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)
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@begin_session
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def purge_platforms(self, fs_platforms: list[str], session: Session = None) -> None:
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return 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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