Fix memory leaked caused by RefreshService

src/ezgg_lan_manager/__init__.py

@@ -20,7 +20,7 @@ from src.ezgg_lan_manager.services.UserService import UserService
 from src.ezgg_lan_manager.types import *
 
 # Inits services in the correct order
-def init_services() -> tuple[AccountingService, CateringService, ConfigurationService, DatabaseService, MailingService, NewsService, SeatingService, TicketingService, UserService, LocalDataService, ReceiptPrintingService, TournamentService, TeamService, RefreshService]:
+def init_services() -> tuple[AccountingService, CateringService, ConfigurationService, DatabaseService, MailingService, NewsService, SeatingService, TicketingService, UserService, LocalDataService, ReceiptPrintingService, TournamentService, TeamService]:
     logging.basicConfig(level=logging.DEBUG)
     configuration_service = ConfigurationService(from_root("config.toml"))
     db_service = DatabaseService(configuration_service.get_database_configuration())
@@ -37,4 +37,4 @@ def init_services() -> tuple[AccountingService, CateringService, ConfigurationSe
     team_service = TeamService(db_service)
     refresh_service = RefreshService()
 
-    return accounting_service, catering_service, configuration_service, db_service, mailing_service, news_service, seating_service, ticketing_service, user_service, local_data_service, receipt_printing_service, tournament_service, team_service, refresh_service
+    return accounting_service, catering_service, configuration_service, db_service, mailing_service, news_service, seating_service, ticketing_service, user_service, local_data_service, receipt_printing_service, tournament_service, team_service

src/ezgg_lan_manager/components/UserInfoBox.py

@@ -68,9 +68,10 @@ class UserInfoBox(Component):
     @event.on_populate
     async def async_init(self) -> None:
         self.user = await self.session[UserService].get_user(self.user_id)
-        self.user_balance = await self.session[AccountingService].get_balance(self.user.user_id)
-        self.user_ticket = await self.session[TicketingService].get_user_ticket(self.user.user_id)
-        self.user_seat = await self.session[SeatingService].get_user_seat(self.user.user_id)
+        if self.user is not None:
+            self.user_balance = await self.session[AccountingService].get_balance(self.user.user_id)
+            self.user_ticket = await self.session[TicketingService].get_user_ticket(self.user.user_id)
+            self.user_seat = await self.session[SeatingService].get_user_seat(self.user.user_id)
         self.session[AccountingService].add_update_hook(self.update)
 
     async def update(self) -> None:

src/ezgg_lan_manager/pages/CateringPage.py

@@ -18,7 +18,6 @@ class CateringPage(Component):
 
     @event.on_populate
     async def on_populate(self) -> None:
-        self.session[RefreshService].subscribe(self.on_populate)
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Catering")
         self.all_menu_items = await self.session[CateringService].get_menu()
 

src/ezgg_lan_manager/services/RefreshService.py

@@ -1,17 +1,17 @@
-from typing import Callable
+from typing import Callable, Optional
 
 
 class RefreshService:
     """
-    rio.Components can subscribe to this service with their on_populate method.
-    Those methods get called whenever a overall refresh is needed. Usually when the user logs in or out.
+    The active rio.Components can subscribe to this service with their on_populate method.
+    This methods get called whenever a overall refresh is needed. Usually when the user logs in or out.
     """
     def __init__(self) -> None:
-        self.subscribers: set[Callable] = set()
+        self.subscriber: Optional[Callable] = None
 
     def subscribe(self, refresh_cb: Callable) -> None:
-        self.subscribers.add(refresh_cb)
+        self.subscriber = refresh_cb
 
     async def trigger_refresh(self) -> None:
-        for refresh_cb in self.subscribers:
-            await refresh_cb()
+        if self.subscriber is not None:
+            await self.subscriber()

src/ezgg_lan_manager/types/UserSession.py

@@ -1,9 +1,9 @@
-from dataclasses import dataclass
 from uuid import UUID
 
+from rio import Dataclass
 
-@dataclass
-class UserSession:
+
+class UserSession(Dataclass):
     id: UUID
     user_id: int
     is_team_member: bool