rommapp_romm/backend/handler/database/platforms_handler.py
2025-09-04 11:17:00 -03:00

120 lines
3.6 KiB
Python

import functools
from collections.abc import Sequence
from sqlalchemy import delete, or_, select, update
from sqlalchemy.orm import Query, Session, selectinload
from decorators.database import begin_session
from models.platform import Platform
from models.rom import Rom
from .base_handler import DBBaseHandler
def with_firmware(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
kwargs["query"] = select(Platform).options(
selectinload(Platform.firmware),
)
return func(*args, **kwargs)
return wrapper
class DBPlatformsHandler(DBBaseHandler):
@begin_session
@with_firmware
def add_platform(
self,
platform: Platform,
query: Query = None,
session: Session = None,
) -> Platform:
platform = session.merge(platform)
session.flush()
return session.scalar(query.filter_by(id=platform.id).limit(1))
@begin_session
def update_platform(self, id: int, data: dict, session: Session = None) -> Platform:
session.execute(
update(Platform)
.where(Platform.id == id)
.values(**data)
.execution_options(synchronize_session="evaluate")
)
return session.query(Platform).filter_by(id=id).one()
@begin_session
@with_firmware
def get_platform(
self, id: int, query: Query = None, session: Session = None
) -> Platform | None:
return session.scalar(query.filter_by(id=id).limit(1))
@begin_session
@with_firmware
def get_platforms(
self, query: Query = None, session: Session = None
) -> Sequence[Platform]:
return session.scalars(query.order_by(Platform.name.asc())).unique().all()
@begin_session
@with_firmware
def get_platform_by_fs_slug(
self, fs_slug: str, query: Query = None, session: Session = None
) -> Platform | None:
return session.scalar(query.filter_by(fs_slug=fs_slug).limit(1))
@begin_session
def delete_platform(self, id: int, session: Session = None) -> None:
# Remove all roms from that platforms first
session.execute(
delete(Rom)
.where(Rom.platform_id == id)
.execution_options(synchronize_session="evaluate")
)
session.execute(
delete(Platform)
.where(Platform.id == id)
.execution_options(synchronize_session="evaluate")
)
@begin_session
def mark_missing_platforms(
self,
fs_platforms_to_keep: list[str],
query: Query = None,
session: Session = None,
) -> Sequence[Platform]:
missing_platforms = (
session.scalars(
select(Platform)
.order_by(Platform.name.asc())
.where(
or_(
Platform.fs_slug.not_in(fs_platforms_to_keep),
Platform.slug.is_(None),
)
)
) # type: ignore[attr-defined]
.unique()
.all()
)
session.execute(
update(Platform)
.where(or_(Platform.fs_slug.not_in(fs_platforms_to_keep), Platform.slug.is_(None))) # type: ignore[attr-defined]
.values(**{"missing_from_fs": True})
.execution_options(synchronize_session="fetch")
)
session.execute(
update(Rom)
.where(Rom.platform_id.in_([p.id for p in missing_platforms])) # type: ignore[attr-defined]
.values(**{"missing_from_fs": True})
.execution_options(synchronize_session="fetch")
)
return missing_platforms