Improve User Management GUI

Co-authored-by: David Rodenkirchen <davidr.develop@gmail.com>
Reviewed-on: #68

VERSION

@@ -1 +1 @@
-0.3.4
+0.5.2

docker-compose.yml

@@ -21,7 +21,7 @@ services:
       MARIADB_USER: ezgg_lan_manager
       MARIADB_PASSWORD: Alkohol1
     healthcheck:
-      test: ["CMD", "mariadb-admin", "ping", "-h", "localhost"]
+      test: ["CMD", "mariadb-admin", "ping", "-h", "localhost", "-pAlkohol1"]
       interval: 5s
       timeout: 3s
       retries: 5
@@ -30,6 +30,8 @@ services:
     volumes:
       - database:/var/lib/mysql
       - ./sql/create_database.sql:/docker-entrypoint-initdb.d/init.sql
+      - ./sql:/sql
+      - ./tournament_data:/opt/ezgg-lan-manager/tournament_data
 
 
 volumes:

src/EzggLanManager.py

@@ -1,5 +1,5 @@
 import logging
-from asyncio import get_event_loop
+from uuid import uuid4
 
 import sys
 
@@ -8,11 +8,10 @@ from pathlib import Path
 from rio import App, Theme, Color, Font, ComponentPage, Session
 from from_root import from_root
 
-from src.ezgg_lan_manager import pages, init_services
+from src.ezgg_lan_manager import pages, init_services, LocalDataService, RefreshService
 from src.ezgg_lan_manager.helpers.LoggedInGuard import logged_in_guard, not_logged_in_guard, team_guard
-from src.ezgg_lan_manager.services.DatabaseService import NoDatabaseConnectionError
 from src.ezgg_lan_manager.services.LocalDataService import LocalData
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 logger = logging.getLogger("EzggLanManager")
 
@@ -30,14 +29,20 @@ if __name__ == "__main__":
         corner_radius_large=0,
         font=Font(from_root("src/ezgg_lan_manager/assets/fonts/joystix.otf"))
     )
-    default_attachments: list = [LocalData()]
+    default_attachments: list = [LocalData(stored_session_token=None)]
     default_attachments.extend(init_services())
 
     lan_info = default_attachments[3].get_lan_info()
 
     async def on_session_start(session: Session) -> None:
+        # Use this line to fake being any user without having to log in
+        # session.attach(UserSession(id=uuid4(), user_id=30, is_team_member=True))
         await session.set_title(lan_info.name)
-        session.attach(SessionStorage())
+        session.attach(RefreshService())
+        if session[LocalData].stored_session_token:
+            user_session = session[LocalDataService].verify_token(session[LocalData].stored_session_token)
+            if user_session is not None:
+                session.attach(user_session)
 
     async def on_app_start(a: App) -> None:
         init_result = await a.default_attachments[4].init_db_pool()
@@ -151,6 +156,12 @@ if __name__ == "__main__":
                 build=pages.ManageCateringPage,
                 guard=team_guard
             ),
+            ComponentPage(
+                name="NewPosOrderPage",
+                url_segment="new-pos-order",
+                build=pages.NewPosOrderPage,
+                guard=team_guard
+            ),
             ComponentPage(
                 name="ManageTournamentsPage",
                 url_segment="manage-tournaments",
@@ -173,6 +184,11 @@ if __name__ == "__main__":
                 url_segment="tournament",
                 build=pages.TournamentDetailsPage,
             ),
+            ComponentPage(
+                name="TournamentTreePage",
+                url_segment="tournament-tree",
+                build=pages.TournamentTreePage,
+            ),
             ComponentPage(
                 name="TournamentRulesPage",
                 url_segment="tournament-rules",
@@ -212,7 +228,14 @@ if __name__ == "__main__":
         }
     )
 
-    sys.exit(app.run_as_web_server(
+    try:
-        host="0.0.0.0",
+        app.run_as_web_server(
-        port=8000,
+            host="0.0.0.0",
-    ))
+            port=8000,
+        )
+    except (KeyboardInterrupt, SystemExit):
+        logger.info("EZGG LAN Manager was shut down.")
+        sys.exit(0)
+    except Exception as e:
+        logger.error(e)
+        sys.exit(1)

src/ezgg_lan_manager/__init__.py

@@ -10,6 +10,7 @@ from src.ezgg_lan_manager.services.DatabaseService import DatabaseService
 from src.ezgg_lan_manager.services.LocalDataService import LocalDataService
 from src.ezgg_lan_manager.services.MailingService import MailingService
 from src.ezgg_lan_manager.services.NewsService import NewsService
+from src.ezgg_lan_manager.services.RefreshService import RefreshService
 from src.ezgg_lan_manager.services.ReceiptPrintingService import ReceiptPrintingService
 from src.ezgg_lan_manager.services.SeatingService import SeatingService
 from src.ezgg_lan_manager.services.TeamService import TeamService
@@ -34,6 +35,6 @@ def init_services() -> tuple[AccountingService, CateringService, ConfigurationSe
     local_data_service = LocalDataService()
     tournament_service = TournamentService(db_service, user_service)
     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

src/ezgg_lan_manager/components/AnimatedText.py

@@ -1,38 +0,0 @@
-from asyncio import sleep
-
-from rio import Text, Component, TextStyle
-
-
-class AnimatedText(Component):
-    def __post_init__(self) -> None:
-        self._display_printing: list[bool] = [False]
-        self.text_comp = Text("")
-
-    async def display_text(self, success: bool, text: str, speed: float = 0.06, font_size: float = 0.9) -> None:
-        if self._display_printing[0]:
-            return
-        else:
-            self._display_printing[0] = True
-        self.text_comp.text = ""
-        if success:
-            self.text_comp.style = TextStyle(
-                fill=self.session.theme.success_color,
-                font_size=font_size
-            )
-            for c in text:
-                self.text_comp.text = self.text_comp.text + c
-                self.text_comp.force_refresh()
-                await sleep(speed)
-        else:
-            self.text_comp.style = TextStyle(
-                fill=self.session.theme.danger_color,
-                font_size=font_size
-            )
-            for c in text:
-                self.text_comp.text = self.text_comp.text + c
-                self.text_comp.force_refresh()
-                await sleep(speed)
-        self._display_printing[0] = False
-
-    def build(self) -> Component:
-        return self.text_comp

src/ezgg_lan_manager/components/CateringManagementOrderDisplay.py

@@ -1,29 +1,30 @@
+import logging
+from asyncio import create_task, sleep
 from functools import partial
 from typing import Optional, Callable
 
-from rio import Component, Row, Card, Column, Text, TextStyle, Spacer, PointerEventListener, Button
+from rio import Component, Row, Card, Column, Text, TextStyle, Spacer, PointerEventListener, Button, Rectangle, Popup, Icon, Color
 
+from src.ezgg_lan_manager import ReceiptPrintingService
+from src.ezgg_lan_manager.components.StatusChangePopup import StatusChangePopup
 from src.ezgg_lan_manager.services.CateringService import CateringService
 from src.ezgg_lan_manager.types.CateringOrder import CateringOrder, CateringOrderStatus
 from src.ezgg_lan_manager.types.Seat import Seat
 
-class CateringManagementOrderDisplayStatusButton(Component):
+logger = logging.getLogger(__name__.split(".")[-1])
-    status: CateringOrderStatus
-    clicked_cb: Callable
-    def build(self) -> Component:
-        return Button(
-            content=Text(
-                CateringOrder.translate_order_status(self.status)
-            ),
-            shape="rectangle",
-            on_press=partial(self.clicked_cb, self.status)
-        )
 
 
 class CateringManagementOrderDisplay(Component):
     order: CateringOrder
     seat: Optional[Seat]
     clicked_cb: Callable
+    status_change_popup_open: bool = False
+
+    def reprint_order(self) -> None:
+        create_task(self.session[ReceiptPrintingService].print_order(self.order.customer, self.order))
+
+    def open_status_change_popup(self) -> None:
+        self.status_change_popup_open = True
 
     def format_order_status(self, status: CateringOrderStatus) -> Text:
         status_text = CateringOrder.translate_order_status(status)
@@ -36,14 +37,12 @@ class CateringManagementOrderDisplay(Component):
 
         return Text(text=status_text, style=TextStyle(fill=color))
 
-    async def status_button_clicked(self, new_status: CateringOrderStatus) -> None:
+    async def change_status(self, new_status: CateringOrderStatus) -> Optional[str]:
-        if self.order.status == CateringOrderStatus.CANCELED:
+        await sleep(1)
-            return
 
-        if new_status == CateringOrderStatus.CANCELED:
+        logger.debug(f"Status of order with ID {self.order.order_id} changing from {self.order.status} to {new_status}")
-            # ToDo: Hier sollten wir nochmal nachfragen ob der Bediener sich wirklich sicher ist,
+        if self.order.status == CateringOrderStatus.CANCELED:  # Can not un-cancel
-            #       und anwarnen das eine stornierte Bestellung nicht ent-storniert werden kann.
+            return "Stornierte Bestellungen können nicht angepasst werden"
-            pass
 
         if self.order.status != new_status:
             if new_status == CateringOrderStatus.CANCELED:
@@ -61,43 +60,58 @@ class CateringManagementOrderDisplay(Component):
                     is_delivery=self.order.is_delivery
                 )
 
+        self.status_change_popup_open = False
+
+
     def build(self) -> Component:
-        return PointerEventListener(
+        card = Card(
-            content=Card(
+            content=Column(
-                content=Column(
+                Row(
-                    Row(
+                    Text(f"ID: {self.order.order_id}", margin_left=0.3, margin_top=0.2, justify="center", style=TextStyle(font_size=1.2)),
-                        Text(f"ID: {self.order.order_id}", margin_left=0.3, margin_top=0.2, justify="center", style=TextStyle(font_size=1.2)),
-                    ),
-                    Row(
-                        Text(f"Status: ", margin_left=0.3, margin_top=0.2),
-                        self.format_order_status(self.order.status),
-                        Spacer(),
-                        Text(self.order.order_date.strftime("%d.%m. - %H:%M Uhr"), margin_right=0.3),
-                    ),
-                    Row(
-                        Text(f"Gast: {self.order.customer.user_name}", margin_left=0.3),
-                        Spacer(),
-                        Text(f"Sitzplatz: {'-' if not self.seat else self.seat.seat_id}", margin_right=0.3),
-                    ),
-                    Row(
-                        Text("Diese Bestellung wird:", margin_left=0.3, margin_bottom=0.5),
-                        Spacer(),
-                        Text("Geliefert" if self.order.is_delivery else "Abgeholt", margin_right=0.3, margin_bottom=0.5),
-                    ),
-                    Row(
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.RECEIVED, self.status_button_clicked),
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.CANCELED, self.status_button_clicked),
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.EN_ROUTE, self.status_button_clicked)
-                    ),
-                    Row(
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.READY_FOR_PICKUP, self.status_button_clicked),
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.COMPLETED, self.status_button_clicked),
-                        CateringManagementOrderDisplayStatusButton(CateringOrderStatus.DELAYED, self.status_button_clicked),
-                    )
                 ),
-                color=self.session.theme.hud_color,
+                Row(
-                colorize_on_hover=True,
+                    Text(f"Status: ", margin_left=0.3, margin_top=0.2),
-                margin=1
+                    self.format_order_status(self.order.status),
+                    Spacer(),
+                    Text(self.order.order_date.strftime("%d.%m. - %H:%M Uhr"), margin_right=0.3),
+                ),
+                Row(
+                    Text(f"Gast: {self.order.customer.user_name}", margin_left=0.3),
+                    Spacer(),
+                    Text(f"Sitzplatz: {'-' if not self.seat else self.seat.seat_id}", margin_right=0.3),
+                ),
+                Row(
+                    Text("Diese Bestellung wird:", margin_left=0.3, margin_bottom=0.5),
+                    Spacer(),
+                    Text("Geliefert" if self.order.is_delivery else "Abgeholt", margin_right=0.3, margin_bottom=0.5),
+                ),
+                Row(
+                    Rectangle(
+                        content=Button(
+                            content=Text("Beleg drucken", justify="left"),
+                            shape="rectangle",
+                            on_press=self.reprint_order
+                        ),
+                        stroke_width=0.1
+                    ),
+                    Rectangle(
+                        content=Button(
+                            content=Text("Status ändern", justify="right"),
+                            shape="rectangle",
+                            on_press=self.open_status_change_popup
+                        ),
+                        stroke_width=0.1
+                    ),
+                )
             ),
+            color=self.session.theme.hud_color,
+            colorize_on_hover=True,
+            margin=1
+        )
+
+        status_change_popup = StatusChangePopup(card, self.status_change_popup_open, self.change_status)
+
+        return PointerEventListener(
+            content=status_change_popup,
             on_press=partial(self.clicked_cb, self.order)
         )

src/ezgg_lan_manager/components/CateringSelectionItem.py

@@ -46,10 +46,10 @@ class CateringSelectionItem(Component):
                     Text(AccountingService.make_euro_string_from_decimal(self.article_price),
                          style=TextStyle(fill=self.session.theme.background_color, font_size=0.9)),
                     IconButton(
-                        icon="material/add",
+                        icon="material/add" if self.is_sensitive else "material/do_not_disturb_on_total_silence",
                         min_size=2,
-                        color=self.session.theme.success_color,
+                        color=self.session.theme.success_color if self.is_sensitive else self.session.theme.danger_color,
-                        style="plain-text",
+                        style="colored-text",
                         on_press=lambda: self.on_add_callback(self.article_id),
                         is_sensitive=self.is_sensitive
                     ),

src/ezgg_lan_manager/components/DesktopNavigation.py

@@ -1,47 +1,29 @@
 from typing import Optional, Callable
 
-from rio import *
+from rio import Component, event, Spacer, Card, Column, Text, TextStyle
 
-from src.ezgg_lan_manager import ConfigurationService, UserService, LocalDataService
+from src.ezgg_lan_manager.services.ConfigurationService import ConfigurationService
+from src.ezgg_lan_manager.services.UserService import UserService
 from src.ezgg_lan_manager.components.DesktopNavigationButton import DesktopNavigationButton
 from src.ezgg_lan_manager.components.NavigationSponsorBox import NavigationSponsorBox
 from src.ezgg_lan_manager.components.UserInfoAndLoginBox import UserInfoAndLoginBox
-from src.ezgg_lan_manager.services.LocalDataService import LocalData
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class DesktopNavigation(Component):
     user: Optional[User] = None
-    force_login_box_refresh: list[Callable] = []
 
     @event.on_populate
-    async def async_init(self) -> None:
+    async def on_populate(self) -> None:
-        self.session[SessionStorage].subscribe_to_logged_in_or_out_event(str(self.__class__), self.async_init)
+        try:
-        local_data = self.session[LocalData]
+            self.user = await self.session[UserService].get_user(self.session[UserSession].user_id)
-        if local_data.stored_session_token:
+        except KeyError:
-            session_ = self.session[LocalDataService].verify_token(local_data.stored_session_token)
-            if session_:
-                self.session.detach(SessionStorage)
-                self.session.attach(session_)
-                self.user = await self.session[UserService].get_user(session_.user_id)
-                try:
-                    # Hack-around, maybe fix in the future
-                    self.force_login_box_refresh[-1]()
-                except IndexError:
-                    pass
-
-                return
-
-        if self.session[SessionStorage].user_id:
-            self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
-        else:
             self.user = None
 
     def build(self) -> Component:
         lan_info = self.session[ConfigurationService].get_lan_info()
-        user_info_and_login_box = UserInfoAndLoginBox()
+        user_info_and_login_box = UserInfoAndLoginBox(state_changed_cb=self.on_populate)
-        self.force_login_box_refresh.append(user_info_and_login_box.force_refresh)
         navigation = [
             DesktopNavigationButton("News", "./news"),
             Spacer(min_height=0.7),

src/ezgg_lan_manager/components/LoginBox.py

@@ -1,10 +1,13 @@
-from rio import Component, TextStyle, Color, TextInput, Button, Text, Rectangle, Column, Row, Spacer, \
+import uuid
-    EventHandler
 
+from rio import Component, TextStyle, Color, TextInput, Button, Text, Rectangle, Column, Row, Spacer, \
+    EventHandler, Webview
+
+from src.ezgg_lan_manager import RefreshService
 from src.ezgg_lan_manager.services.LocalDataService import LocalDataService, LocalData
 from src.ezgg_lan_manager.services.UserService import UserService
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class LoginBox(Component):
@@ -26,11 +29,13 @@ class LoginBox(Component):
             self.password_input_is_valid = True
             self.login_button_is_loading = False
             self.is_account_locked = False
-            await self.session[SessionStorage].set_user_id_and_team_member_flag(user.user_id, user.is_team_member)
+            user_session = UserSession(id=uuid.uuid4(), user_id=user.user_id, is_team_member=user.is_team_member)
-            token = self.session[LocalDataService].set_session(self.session[SessionStorage])
+            self.session.attach(user_session)
+            token = self.session[LocalDataService].set_session(user_session)
             self.session[LocalData].stored_session_token = token
             self.session.attach(self.session[LocalData])
-            self.status_change_cb()
+            await self.status_change_cb()
+            await self.session[RefreshService].trigger_refresh()
         else:
             self.user_name_input_is_valid = False
             self.password_input_is_valid = False

src/ezgg_lan_manager/components/SeatingPlanInfoBox.py

@@ -1,11 +1,10 @@
 from decimal import Decimal
-from functools import partial
 from typing import Optional, Callable
 
 from rio import Component, Column, Text, TextStyle, Button, Spacer, event
 
 from src.ezgg_lan_manager import TicketingService
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class SeatingPlanInfoBox(Component):
@@ -22,11 +21,14 @@ class SeatingPlanInfoBox(Component):
 
     @event.on_populate
     async def check_ticket(self) -> None:
-        if self.session[SessionStorage].user_id:
+        try:
-            user_ticket = await self.session[TicketingService].get_user_ticket(self.session[SessionStorage].user_id)
+            user_id = self.session[UserSession].user_id
+            user_ticket = await self.session[TicketingService].get_user_ticket(user_id)
             self.has_user_ticket = not (user_ticket is None)
             self.booking_button_text = "Buchen" if self.has_user_ticket else "Ticket kaufen"
             self.force_refresh()
+        except KeyError:
+            return
 
     async def purchase_clicked(self):
         if self.has_user_ticket:
@@ -35,6 +37,11 @@ class SeatingPlanInfoBox(Component):
             self.session.navigate_to("./buy_ticket")
 
     def build(self) -> Component:
+        try:
+            user_id = self.session[UserSession].user_id
+        except KeyError:
+            user_id = None
+
         if self.override_text:
             return Column(Text(self.override_text, margin=1,
                                style=TextStyle(fill=self.session.theme.neutral_color, font_size=1.4), overflow="wrap",
@@ -75,9 +82,9 @@ class SeatingPlanInfoBox(Component):
                 grow_y=False,
                 is_sensitive=not self.is_booking_blocked,
                 on_press=self.purchase_clicked
-            ) if self.session[SessionStorage].user_id else Text(f"Du musst eingeloggt sein um einen Sitzplatz zu buchen",
+            ) if user_id is not None else Text(f"Du musst eingeloggt sein um einen Sitzplatz zu buchen",
-                                                                margin=1,
+                                               margin=1,
-                                                                style=TextStyle(fill=self.session.theme.neutral_color),
+                                               style=TextStyle(fill=self.session.theme.neutral_color),
-                                                                overflow="wrap", justify="center"),
+                                               overflow="wrap", justify="center"),
             min_height=10
         )

src/ezgg_lan_manager/components/SeatingPlanPixels.py

@@ -4,7 +4,7 @@ from rio import Component, Text, Icon, TextStyle, Rectangle, Spacer, Color, Poin
 from typing import Optional, Callable, Literal
 
 from src.ezgg_lan_manager.types.Seat import Seat
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class SeatPixel(Component):
@@ -14,7 +14,11 @@ class SeatPixel(Component):
     seat_orientation: Literal["top", "bottom"]
 
     def determine_color(self) -> Color:
-        if self.seat.user is not None and self.seat.user.user_id == self.session[SessionStorage].user_id:
+        try:
+            user_id = self.session[UserSession].user_id
+        except KeyError:
+            user_id = None
+        if self.seat.user is not None and self.seat.user.user_id == user_id:
             return Color.from_hex("800080")
         elif self.seat.is_blocked or self.seat.user is not None:
             return self.session.theme.danger_color

src/ezgg_lan_manager/components/ShoppingCartAndOrders.py

@@ -1,5 +1,6 @@
 from asyncio import sleep, create_task
 from decimal import Decimal
+from typing import Optional
 
 from rio import Component, Column, Text, TextStyle, Button, Row, ScrollContainer, Spacer, Popup, Table, event, Card
 
@@ -8,7 +9,7 @@ from src.ezgg_lan_manager.components.CateringOrderItem import CateringOrderItem
 from src.ezgg_lan_manager.services.AccountingService import AccountingService
 from src.ezgg_lan_manager.services.CateringService import CateringService, CateringError, CateringErrorType
 from src.ezgg_lan_manager.types.CateringOrder import CateringOrder, CateringMenuItemsWithAmount
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 POPUP_CLOSE_TIMEOUT_SECONDS = 3
 
@@ -22,16 +23,21 @@ class ShoppingCartAndOrders(Component):
 
     @event.periodic(5)
     async def periodic_refresh_of_orders(self) -> None:
-        if not self.show_cart and not self.popup_is_shown:
+        user_id = self._get_user_id()
-            self.orders = await self.session[CateringService].get_orders_for_user(self.session[SessionStorage].user_id)
+        if not self.show_cart and not self.popup_is_shown and user_id is not None:
+            self.orders = await self.session[CateringService].get_orders_for_user(user_id)
 
     async def switch(self) -> None:
         self.show_cart = not self.show_cart
-        self.orders = await self.session[CateringService].get_orders_for_user(self.session[SessionStorage].user_id)
+        user_id = self._get_user_id()
+        if user_id is not None:
+            self.orders = await self.session[CateringService].get_orders_for_user(user_id)
 
     async def on_remove_item(self, list_id: int) -> None:
         catering_service = self.session[CateringService]
-        user_id = self.session[SessionStorage].user_id
+        user_id = self._get_user_id()
+        if user_id is None:
+            return
         cart = catering_service.get_cart(user_id)
         try:
             cart.pop(list_id)
@@ -41,13 +47,16 @@ class ShoppingCartAndOrders(Component):
         self.force_refresh()
 
     async def on_empty_cart_pressed(self) -> None:
-        self.session[CateringService].save_cart(self.session[SessionStorage].user_id, [])
+        user_id = self._get_user_id()
+        if user_id is None:
+            return
+        self.session[CateringService].save_cart(user_id, [])
         self.force_refresh()
 
     async def on_add_item(self, article_id: int) -> None:
         catering_service = self.session[CateringService]
-        user_id = self.session[SessionStorage].user_id
+        user_id = self._get_user_id()
-        if not user_id:
+        if user_id is None:
             return
         cart = catering_service.get_cart(user_id)
         item_to_add = await catering_service.get_menu_item_by_id(article_id)
@@ -68,7 +77,9 @@ class ShoppingCartAndOrders(Component):
         self.order_button_loading = True
         self.force_refresh()
 
-        user_id = self.session[SessionStorage].user_id
+        user_id = self._get_user_id()
+        if user_id is None:
+            return
         cart = self.session[CateringService].get_cart(user_id)
         show_popup_task = None
         if len(cart) < 1:
@@ -90,7 +101,7 @@ class ShoppingCartAndOrders(Component):
                 else:
                     show_popup_task = create_task(self.show_popup("Unbekannter Fehler", True))
             else:
-                self.session[CateringService].save_cart(self.session[SessionStorage].user_id, [])
+                self.session[CateringService].save_cart(user_id, [])
         self.order_button_loading = False
         if not show_popup_task:
             show_popup_task = create_task(self.show_popup("Bestellung erfolgreich aufgegeben!", False))
@@ -133,10 +144,16 @@ class ShoppingCartAndOrders(Component):
         )
         await dialog.wait_for_close()
 
+    def _get_user_id(self) -> Optional[int]:
+        try:
+            return self.session[UserSession].user_id
+        except KeyError:
+            return None
+
     def build(self) -> Component:
-        user_id = self.session[SessionStorage].user_id
+        user_id = self._get_user_id()
         catering_service = self.session[CateringService]
-        cart = catering_service.get_cart(user_id)
+        cart = catering_service.get_cart(user_id) if user_id is not None else []
         if self.show_cart:
             cart_container = ScrollContainer(
                 content=Column(

src/ezgg_lan_manager/components/StatusChangePopup.py

@@ -0,0 +1,92 @@
+from functools import partial
+from typing import Callable, Optional
+
+from rio import Column, Row, Text, Button, Component, Icon, Popup, Rectangle, Color, Tooltip, PointerEventListener, PointerEvent, ProgressCircle
+
+from src.ezgg_lan_manager.types.CateringOrder import CateringOrderStatus, CateringOrder
+
+ICONS_BY_STATUS = {
+    CateringOrderStatus.RECEIVED: "material/move_to_inbox",
+    CateringOrderStatus.DELAYED: "material/hourglass_top",
+    CateringOrderStatus.READY_FOR_PICKUP: "material/takeout_dining",
+    CateringOrderStatus.EN_ROUTE: "material/local_shipping",
+    CateringOrderStatus.COMPLETED: "material/check_circle",
+    CateringOrderStatus.CANCELED: "material/cancel",
+}
+
+
+class StatusChangeButton(Component):
+    status: CateringOrderStatus
+    clicked_cb: Callable
+
+    def build(self) -> Component:
+        return Tooltip(
+            anchor=PointerEventListener(
+                content=Rectangle(
+                    fill=Color.TRANSPARENT,
+                    content=Column(
+                        Icon(
+                            icon=ICONS_BY_STATUS[self.status]
+                        )
+                    ),
+                    stroke_width=0.1,
+                    stroke_color=Color.TRANSPARENT,
+                    hover_stroke_width=0.1,
+                    hover_stroke_color=Color.BLACK
+                ),
+                on_press=partial(self.clicked_cb, self.status)
+            ),
+            tip=Text(text=CateringOrder.translate_order_status(self.status)),
+            position="top"
+        )
+
+
+class StatusChangePopup(Component):
+    anchor: Component
+    popup_open: bool
+    status_should_change_cb: Callable
+    response: Optional[str] = None
+    is_loading: bool = False
+
+    async def handle_button_clicked(self, status: CateringOrderStatus, _: PointerEvent) -> None:
+        self.is_loading = True
+        self.response = await self.status_should_change_cb(status)
+        self.is_loading = False
+
+    def close(self) -> None:
+        self.popup_open = False
+
+    def build(self) -> Component:
+        if self.is_loading:
+            content = Row(
+                ProgressCircle(margin=1)
+            )
+        elif self.response:
+            content = Row(
+                Text(text=self.response, justify="center", overflow="wrap", margin=1)
+            )
+        else:
+            content = Row(
+                StatusChangeButton(CateringOrderStatus.RECEIVED, self.handle_button_clicked),
+                StatusChangeButton(CateringOrderStatus.DELAYED, self.handle_button_clicked),
+                StatusChangeButton(CateringOrderStatus.READY_FOR_PICKUP, self.handle_button_clicked),
+                StatusChangeButton(CateringOrderStatus.EN_ROUTE, self.handle_button_clicked),
+                StatusChangeButton(CateringOrderStatus.COMPLETED, self.handle_button_clicked),
+                StatusChangeButton(CateringOrderStatus.CANCELED, self.handle_button_clicked),
+                spacing=0.5,
+                margin=0.5
+            )
+        return Popup(
+            anchor=self.anchor,
+            content=Rectangle(
+                content=Column(
+                    content,
+                    Button(content=Text(text="Abbrechen", justify="center", fill=self.session.theme.secondary_color), shape="rectangle", style="colored-text", on_press=self.close),
+                    proportions=[2.5, 1]
+                ),
+                fill=self.session.theme.hud_color,
+                min_width=34,
+                min_height=8.3
+            ),
+            is_open=self.popup_open
+        )

src/ezgg_lan_manager/components/TicketBuyCard.py

@@ -2,7 +2,6 @@ from functools import partial
 from typing import Callable, Optional
 from decimal import Decimal
 
-import rio
 from rio import Component, Card, Column, Text, Row, Button, TextStyle, ProgressBar, event, Spacer
 
 from src.ezgg_lan_manager import TicketingService
@@ -22,10 +21,10 @@ class TicketBuyCard(Component):
     available_tickets: int = 0
 
     @event.on_populate
-    async def async_init(self) -> None:
+    async def on_populate(self) -> None:
         self.available_tickets = await self.session[TicketingService].get_available_tickets_for_category(self.category)
 
-    def build(self) -> rio.Component:
+    def build(self) -> Component:
         ticket_description_style = TextStyle(
             fill=self.session.theme.neutral_color,
             font_size=1.2,

src/ezgg_lan_manager/components/UserEditForm.py

@@ -9,8 +9,8 @@ from rio import Component, Column, Button, Color, TextStyle, Text, TextInput, Ro
 
 from src.ezgg_lan_manager.services.UserService import UserService, NameNotAllowedError
 from src.ezgg_lan_manager.services.ConfigurationService import ConfigurationService
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class UserEditForm(Component):
@@ -35,8 +35,13 @@ class UserEditForm(Component):
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Profil bearbeiten")
         if self.is_own_profile:
-            self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+            try:
-            self.profile_picture = await self.session[UserService].get_profile_picture(self.user.user_id)
+                user_id = self.session[UserSession].user_id
+            except KeyError:
+                self.session.navigate_to("/")
+            else:
+                self.user = await self.session[UserService].get_user(user_id)
+                self.profile_picture = await self.session[UserService].get_profile_picture(self.user.user_id)
         else:
             self.profile_picture = await self.session[UserService].get_profile_picture(self.user.user_id)
 

src/ezgg_lan_manager/components/UserInfoAndLoginBox.py

@@ -1,15 +1,18 @@
 import logging
+from typing import Callable
 
 from rio import Component
 from src.ezgg_lan_manager.components.LoginBox import LoginBox
 from src.ezgg_lan_manager.components.UserInfoBox import UserInfoBox
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 logger = logging.getLogger(__name__.split(".")[-1])
 
 class UserInfoAndLoginBox(Component):
+    state_changed_cb: Callable
     def build(self) -> Component:
-        if self.session[SessionStorage].user_id is None:
+        try:
-            return LoginBox(status_change_cb=self.force_refresh)
+            user_id = self.session[UserSession].user_id
-        else:
+            return UserInfoBox(status_change_cb=self.state_changed_cb, user_id=user_id)
-            return UserInfoBox(status_change_cb=self.force_refresh)
+        except KeyError:
+            return LoginBox(status_change_cb=self.state_changed_cb)

src/ezgg_lan_manager/components/UserInfoBox.py

@@ -6,6 +6,7 @@ from rio import Component, TextStyle, Color, Button, Text, Rectangle, Column, Ro
 
 from src.ezgg_lan_manager.components.UserInfoBoxButton import UserInfoBoxButton
 from src.ezgg_lan_manager.services.LocalDataService import LocalData, LocalDataService
+from src.ezgg_lan_manager.services.RefreshService import RefreshService
 from src.ezgg_lan_manager.services.UserService import UserService
 from src.ezgg_lan_manager.services.AccountingService import AccountingService
 from src.ezgg_lan_manager.services.TicketingService import TicketingService
@@ -13,7 +14,7 @@ from src.ezgg_lan_manager.services.SeatingService import SeatingService
 from src.ezgg_lan_manager.types.Seat import Seat
 from src.ezgg_lan_manager.types.Ticket import Ticket
 from src.ezgg_lan_manager.types.User import User
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class StatusButton(Component):
@@ -41,6 +42,7 @@ class StatusButton(Component):
 
 
 class UserInfoBox(Component):
+    user_id: int
     status_change_cb: EventHandler = None
     TEXT_STYLE = TextStyle(fill=Color.from_hex("02dac5"), font_size=0.9)
     user: Optional[User] = None
@@ -53,31 +55,29 @@ class UserInfoBox(Component):
         return choice(["Guten Tacho", "Tuten Gag", "Servus", "Moinjour", "Hallöchen", "Heyho", "Moinsen"])
 
     async def logout(self) -> None:
-        await self.session[SessionStorage].clear()
+        self.session.detach(UserSession)
         self.user = None
         self.session[LocalDataService].del_session(self.session[LocalData].stored_session_token)
         self.session[LocalData].stored_session_token = None
         self.session.attach(self.session[LocalData])
-        self.status_change_cb()
+        if self.status_change_cb is not None:
-        self.session.navigate_to("/")
+            await self.status_change_cb()
+        await self.session[RefreshService].trigger_refresh()
+        self.session.navigate_to("")
 
     @event.on_populate
     async def async_init(self) -> None:
-        if self.session[SessionStorage].user_id:
+        self.user = await self.session[UserService].get_user(self.user_id)
-            self.user = await self.session[UserService].get_user(self.session[SessionStorage].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)
+        self.session[AccountingService].add_update_hook(self.update)
 
     async def update(self) -> None:
-        if not self.user:
+        self.user_balance = await self.session[AccountingService].get_balance(self.user_id)
-            self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+        self.user_ticket = await self.session[TicketingService].get_user_ticket(self.user_id)
-        if not self.user:
+        self.user_seat = await self.session[SeatingService].get_user_seat(self.user_id)
-            return
-        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)
 
     def build(self) -> Component:
         if not self.user:

src/ezgg_lan_manager/helpers/LoggedInGuard.py

@@ -3,22 +3,32 @@ from typing import Optional
 from rio import URL, GuardEvent
 
 from src.ezgg_lan_manager.services.UserService import UserService
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 # Guards pages against access from users that are NOT logged in
 def logged_in_guard(event: GuardEvent) -> Optional[URL]:
-    if event.session[SessionStorage].user_id is None:
+    try:
+        _ = event.session[UserSession].user_id
+        return None
+    except KeyError:
         return URL("./")
 
 # Guards pages against access from users that ARE logged in
 def not_logged_in_guard(event: GuardEvent) -> Optional[URL]:
-    if event.session[SessionStorage].user_id is not None:
+    try:
+        _ = event.session[UserSession].user_id
         return URL("./")
+    except KeyError:
+        return None
 
 # Guards pages against access from users that are NOT logged in and NOT team members
 def team_guard(event: GuardEvent) -> Optional[URL]:
-    user_id = event.session[SessionStorage].user_id
+    try:
-    is_team_member = event.session[SessionStorage].is_team_member
+        user_id = event.session[UserSession].user_id
-    if user_id is None or not is_team_member:
+        is_team_member = event.session[UserSession].is_team_member
+        if user_id and is_team_member:
+            return None
+        return URL("./")
+    except KeyError:
         return URL("./")

src/ezgg_lan_manager/pages/Account.py

@@ -1,29 +1,39 @@
 from decimal import Decimal
-from functools import partial
 from typing import Optional
 
-from rio import Column, Component, event, Text, TextStyle, Button, Color, Revealer, Row, ProgressCircle, Link
+from rio import Column, Component, event, Text, TextStyle, Button, Color, Revealer, Row, ProgressCircle, Link, Image
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, AccountingService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.Transaction import Transaction
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class AccountPage(Component):
     user: Optional[User] = None
     balance: Optional[Decimal] = None
     transaction_history: list[Transaction] = list()
+    payment_qr_image: bytes = None
     banking_info_revealer_open: bool = False
     paypal_info_revealer_open: bool = False
 
     @event.on_populate
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Guthabenkonto")
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+        try:
-        self.balance = await self.session[AccountingService].get_balance(self.user.user_id)
+            user_id = self.session[UserSession].user_id
-        self.transaction_history = await self.session[AccountingService].get_transaction_history(self.user.user_id)
+        except KeyError:
+            pass
+        else:
+            self.user = await self.session[UserService].get_user(user_id)
+            self.balance = await self.session[AccountingService].get_balance(user_id)
+            self.transaction_history = await self.session[AccountingService].get_transaction_history(user_id)
+            self.payment_qr_image = self.session[AccountingService].make_payment_qr_image(
+                    "Einfach Zocken Gaming Gesellschaft",
+                    "GENODE51BIK",
+                    "DE47517624340019856607",
+                    f"AUFLADUNG - {self.user.user_id} - {self.user.user_name}")
 
     async def _on_banking_info_press(self) -> None:
         self.banking_info_revealer_open = not self.banking_info_revealer_open
@@ -32,7 +42,7 @@ class AccountPage(Component):
         self.paypal_info_revealer_open = not self.paypal_info_revealer_open
 
     def build(self) -> Component:
-        if not self.user and not self.balance:
+        if not self.user or not self.payment_qr_image:
             return Column(
                 MainViewContentBox(
                     ProgressCircle(
@@ -81,6 +91,10 @@ class AccountPage(Component):
                     margin=0,
                     margin_bottom=1,
                     align_x=0.5
+                ),
+                Image(self.payment_qr_image,
+                      min_width=20,
+                      min_height=20
                 )
             ),
             margin=2,
@@ -219,19 +233,20 @@ class AccountPage(Component):
                         on_press=self._on_paypal_info_press
                     ),
                     paypal_info_revealer,
-                    Link(
+                    # Disabled because people did not understand the fee's and kept charging 24.03 € to their accounts
-                        content=Button(
+                    # Link(
-                            content=Text("PAYPAL (3% Gebühr - Gewerblich)", style=TextStyle(fill=Color.from_hex("121212"), font_size=0.8), justify="center"),
+                    #     content=Button(
-                            shape="rectangle",
+                    #         content=Text("PAYPAL (3% Gebühr - Gewerblich)", style=TextStyle(fill=Color.from_hex("121212"), font_size=0.8), justify="center"),
-                            style="major",
+                    #         shape="rectangle",
-                            color="secondary",
+                    #         style="major",
-                            grow_x=True,
+                    #         color="secondary",
-                            margin=2,
+                    #         grow_x=True,
-                            margin_top=0
+                    #         margin=2,
-                        ),
+                    #         margin_top=0
-                        target_url="https://www.paypal.com/ncp/payment/89YMGVZ4S33RS",
+                    #     ),
-                        open_in_new_tab=True
+                    #     target_url="https://www.paypal.com/ncp/payment/89YMGVZ4S33RS",
-                    )
+                    #     open_in_new_tab=True
+                    # )
                 )
             ),
             MainViewContentBox(

src/ezgg_lan_manager/pages/BuyTicketPage.py

@@ -2,14 +2,14 @@ from typing import Optional
 
 from rio import Text, Column, TextStyle, Component, event, Button, Popup
 
-from src.ezgg_lan_manager import ConfigurationService, UserService, TicketingService
+from src.ezgg_lan_manager import ConfigurationService, UserService, TicketingService, RefreshService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.TicketBuyCard import TicketBuyCard
 from src.ezgg_lan_manager.services.AccountingService import InsufficientFundsError
 from src.ezgg_lan_manager.services.TicketingService import TicketNotAvailableError, UserAlreadyHasTicketError
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.Ticket import Ticket
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class BuyTicketPage(Component):
@@ -23,12 +23,18 @@ class BuyTicketPage(Component):
 
     @event.on_populate
     async def on_populate(self) -> None:
-        self.session[SessionStorage].subscribe_to_logged_in_or_out_event(str(self.__class__), self.on_populate)
+        self.session[RefreshService].subscribe(self.on_populate)
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Ticket kaufen")
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+        try:
+            user_id = self.session[UserSession].user_id
+        except KeyError:
+            self.user = None
+        else:
+            self.user = await self.session[UserService].get_user(user_id)
         if self.user is None:  # No user logged in
             self.is_buying_enabled = False
             self.is_user_logged_in = False
+            self.user_ticket = None
         else:  # User is logged in
             self.is_user_logged_in = True
             possible_ticket = await self.session[TicketingService].get_user_ticket(self.user.user_id)

src/ezgg_lan_manager/pages/CateringPage.py

@@ -6,8 +6,9 @@ from src.ezgg_lan_manager import ConfigurationService, CateringService
 from src.ezgg_lan_manager.components.CateringSelectionItem import CateringSelectionItem
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.ShoppingCartAndOrders import ShoppingCartAndOrders
+from src.ezgg_lan_manager.services.RefreshService import RefreshService
 from src.ezgg_lan_manager.types.CateringMenuItem import CateringMenuItemCategory, CateringMenuItem
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class CateringPage(Component):
@@ -15,9 +16,6 @@ class CateringPage(Component):
     all_menu_items: Optional[list[CateringMenuItem]] = None
     shopping_cart_and_orders: list[ShoppingCartAndOrders] = []
 
-    def __post_init__(self) -> None:
-        self.session[SessionStorage].subscribe_to_logged_in_or_out_event(self.__class__.__name__, self.on_user_logged_in_status_changed)
-
     @event.on_populate
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Catering")
@@ -34,7 +32,10 @@ class CateringPage(Component):
         return list(filter(lambda item: item.category == category, all_menu_items))
 
     def build(self) -> Component:
-        user_id = self.session[SessionStorage].user_id
+        try:
+            user_id = self.session[UserSession].user_id
+        except KeyError:
+            user_id = None
         if len(self.shopping_cart_and_orders) == 0:
             self.shopping_cart_and_orders.append(ShoppingCartAndOrders())
         if len(self.shopping_cart_and_orders) > 1:

src/ezgg_lan_manager/pages/ContactPage.py

@@ -5,8 +5,8 @@ from rio import Text, Column, TextStyle, Component, event, TextInput, MultiLineT
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, MailingService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class ContactPage(Component):
@@ -25,9 +25,9 @@ class ContactPage(Component):
     @event.on_populate
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Kontakt")
-        if self.session[SessionStorage].user_id is not None:
+        try:
-            self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+            self.user = await self.session[UserService].get_user(self.session[UserSession].user_id)
-        else:
+        except KeyError:
             self.user = None
         self.e_mail = "" if not self.user else self.user.user_mail
 

src/ezgg_lan_manager/pages/EditProfile.py

@@ -1,23 +1,14 @@
-from typing import Optional
-
 from rio import Column, Component, event, Spacer
 
-from src.ezgg_lan_manager import ConfigurationService, UserService
+from src.ezgg_lan_manager import ConfigurationService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.UserEditForm import UserEditForm
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
-from src.ezgg_lan_manager.types.User import User
 
 
 class EditProfilePage(Component):
-    user: Optional[User] = None
-    pfp: Optional[bytes] = None
-
     @event.on_populate
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Profil bearbeiten")
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
-        self.pfp = await self.session[UserService].get_profile_picture(self.user.user_id)
 
     def build(self) -> Component:
         return Column(

src/ezgg_lan_manager/pages/ManageCateringPage.py

@@ -3,7 +3,7 @@ from dataclasses import field, dataclass
 from datetime import datetime
 from typing import Optional, Callable
 
-from rio import Column, Component, event, TextStyle, Text, Spacer, PointerEvent, Button, Popup, Card, Row
+from rio import Column, Component, event, TextStyle, Text, Spacer, PointerEvent, Button, Popup, Card, Row, Rectangle, Color, PointerEventListener
 
 from src.ezgg_lan_manager import ConfigurationService, CateringService, SeatingService, AccountingService
 from src.ezgg_lan_manager.components.CateringManagementOrderDisplay import CateringManagementOrderDisplay
@@ -106,6 +106,7 @@ class ManageCateringPage(Component):
         return sorted_list
 
     async def order_clicked(self, order: CateringOrder, _: PointerEvent) -> None:
+        await self.update_orders()
         self.order_popup_order = order
         self.order_popup_open = True
 
@@ -120,7 +121,7 @@ class ManageCateringPage(Component):
                 font_size=1.2
             ),
             margin_top=2,
-            margin_bottom=2,
+            margin_bottom=1,
             align_x=0.5
         )
         popup = Popup(
@@ -132,7 +133,26 @@ class ManageCateringPage(Component):
         )
         return Column(
             MainViewContentBox(
-                Column(popup)
+                Column(
+                    popup,
+                    PointerEventListener(
+                        content=Rectangle(
+                            content=Text(text="Neue Bestellung anlegen", fill=Color.WHITE, justify="center", margin=0.3),
+                            margin_bottom=1,
+                            margin_right=5,
+                            margin_left=5,
+                            fill=self.session.theme.secondary_color,
+                            hover_fill=self.session.theme.hud_color,
+                            stroke_width=0.2,
+                            stroke_color=Color.TRANSPARENT,
+                            hover_stroke_width=0.2,
+                            hover_stroke_color=self.session.theme.background_color,
+                            cursor="pointer",
+                            transition_time=0.1
+                        ),
+                        on_press=lambda _: self.session.navigate_to("new-pos-order")
+                    )
+                )
             ),
             MainViewContentBox(
                 Column(

src/ezgg_lan_manager/pages/ManageTournamentsPage.py

@@ -11,7 +11,7 @@ from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBo
 from src.ezgg_lan_manager.types.DateUtil import weekday_to_display_text
 from src.ezgg_lan_manager.types.Participant import Participant
 from src.ezgg_lan_manager.types.Tournament import Tournament
-from src.ezgg_lan_manager.types.TournamentBase import TournamentStatus
+from src.ezgg_lan_manager.types.TournamentBase import TournamentStatus, TournamentError
 
 logger = logging.getLogger(__name__.split(".")[-1])
 
@@ -29,7 +29,10 @@ class ManageTournamentsPage(Component):
 
     async def on_start_pressed(self, tournament_id: int) -> None:
         logger.info(f"Starting tournament with ID {tournament_id}")
-        await self.session[TournamentService].start_tournament(tournament_id)
+        try:
+            await self.session[TournamentService].start_tournament(tournament_id)
+        except TournamentError as e:
+            logger.error(f"Error trying to start tournament: {e}")
 
     async def on_cancel_pressed(self, tournament_id: int) -> None:
         logger.info(f"Canceling tournament with ID {tournament_id}")
@@ -92,9 +95,17 @@ class ManageTournamentsPage(Component):
                                 font_size=1.2
                             ),
                             margin_top=2,
-                            margin_bottom=2,
+                            margin_bottom=1,
                             align_x=0.5
                         ),
+                        Button(
+                            content="Cache erneuern",
+                            shape="rectangle",
+                            style="colored-text",
+                            margin_bottom=2,
+                            align_x=0.5,
+                            on_press=self.session[TournamentService].queue_cache_renewal
+                        ),
                         *tournament_rows
                     )
                 ),

src/ezgg_lan_manager/pages/ManageUsersPage.py

@@ -4,16 +4,16 @@ from typing import Optional
 
 from rio import Column, Component, event, TextStyle, Text, TextInput, ThemeContextSwitcher, Grid, \
     PointerEventListener, PointerEvent, Rectangle, Color, TextInputChangeEvent, Spacer, Row, Switch, \
-    SwitchChangeEvent, EventHandler
+    SwitchChangeEvent, EventHandler, Icon
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, AccountingService, SeatingService, MailingService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.NewTransactionForm import NewTransactionForm
 from src.ezgg_lan_manager.components.UserEditForm import UserEditForm
 from src.ezgg_lan_manager.services.AccountingService import InsufficientFundsError
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.Transaction import Transaction
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 logger = logging.getLogger(__name__.split(".")[-1])
 
@@ -73,18 +73,28 @@ class ManageUsersPage(Component):
         seat = await self.session[SeatingService].get_user_seat(self.selected_user.user_id)
         self.user_seat = seat.seat_id if seat else "-"
         self.is_user_account_locked = not self.selected_user.is_active
+        await self.on_search_parameters_changed(TextInputChangeEvent(self.selected_user.user_name))
 
     async def on_search_parameters_changed(self, e: TextInputChangeEvent) -> None:
         self.search_results = list(
             filter(lambda user: (e.text.lower() in user.user_name.lower()) or e.text.lower() in str(user.user_id),
                    self.all_users))
 
+    async def reset_view(self, _: PointerEvent) -> None:
+        self.selected_user = None
+        self.search_results = self.all_users
+        await self.on_search_parameters_changed(TextInputChangeEvent(""))
+
     async def change_account_active(self, _: SwitchChangeEvent) -> None:
         self.selected_user.is_active = not self.is_user_account_locked
         await self.session[UserService].update_user(self.selected_user)
 
     async def on_new_transaction(self, transaction: Transaction) -> None:
-        if not self.session[SessionStorage].is_team_member:  # Better safe than sorry
+        try:
+            user = await self.session[UserService].get_user(self.session[UserSession].user_id)
+            if not user.is_team_member:  # Better safe than sorry
+                return
+        except KeyError:
             return
 
         logger.info(f"Got new transaction for user with ID '{transaction.user_id}' over "
@@ -94,7 +104,7 @@ class ManageUsersPage(Component):
 
         if transaction.is_debit:
             try:
-                await self.session[AccountingService].remove_balance(
+                new_total_balance = await self.session[AccountingService].remove_balance(
                     transaction.user_id,
                     transaction.value,
                     transaction.reference
@@ -118,6 +128,7 @@ class ManageUsersPage(Component):
 
         self.accounting_section_result_text = f"Guthaben {'entfernt' if transaction.is_debit else 'hinzugefügt'}!"
         self.accounting_section_result_success = True
+        self.user_account_balance = self.session[AccountingService].make_euro_string_from_decimal(new_total_balance)
 
     def build(self) -> Component:
         return Column(
@@ -160,15 +171,32 @@ class ManageUsersPage(Component):
             ),
             MainViewContentBox(
                 Column(
-                    Text(
+                    Row(
-                        text="Konto & Sitzplatz",
+                        Spacer(),
-                        style=TextStyle(
+                        PointerEventListener(
-                            fill=self.session.theme.background_color,
+                            content=Icon("material/cancel", fill="background", min_width=2.5, margin_top=1, margin_right=1),
-                            font_size=1.2
+                            on_press=self.reset_view
+                        )
+                    ),
+                    Row(
+                        Text(
+                            text=f"Konto von ",
+                            style=TextStyle(
+                                fill=self.session.theme.background_color,
+                                font_size=1.2
+                            ),
+                            justify="right"
                         ),
-                        margin_top=2,
+                        Text(
-                        margin_bottom=2,
+                            text=self.selected_user.user_name,
-                        align_x=0.5
+                            style=TextStyle(
+                                fill=self.session.theme.hud_color,
+                                font_size=1.2
+                            ),
+                            justify="left"
+                        ),
+                        margin_top=0.5,
+                        margin_bottom=2
                     ),
                     Row(
                         Text(

src/ezgg_lan_manager/pages/NewPosOrderPage.py

@@ -0,0 +1,417 @@
+import logging
+from asyncio import sleep, create_task
+from decimal import Decimal
+from typing import Optional, Callable
+
+from rio import Column, Component, event, TextStyle, Text, Spacer, Revealer, ProgressCircle, ScrollContainer, Row, Popup, List, Rectangle, PointerEventListener, \
+    PointerEvent, TextInput, TextInputChangeEvent
+
+from src.ezgg_lan_manager import ConfigurationService, CateringService, AccountingService
+from src.ezgg_lan_manager.components.CateringCartItem import CateringCartItem
+from src.ezgg_lan_manager.components.CateringSelectionItem import CateringSelectionItem
+from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
+from src.ezgg_lan_manager.services.CateringService import CateringError, CateringErrorType
+from src.ezgg_lan_manager.types.CateringMenuItem import CateringMenuItemCategory, CateringMenuItem
+from src.ezgg_lan_manager.types.CateringOrder import CateringMenuItemsWithAmount
+from src.ezgg_lan_manager.types.UserSession import UserSession
+
+POPUP_CLOSE_TIMEOUT_SECONDS = 3
+logger = logging.getLogger(__name__.split(".")[-1])
+
+class Cart(Component):
+    cart: List[CateringMenuItem]
+    user_id: Optional[int]
+    clear_cb: Callable
+    order_button_loading: bool = False
+    popup_message: str = ""
+    popup_is_shown: bool = False
+    popup_is_error: bool = True
+
+    async def on_remove_item(self, list_id: int) -> None:
+        try:
+            self.cart.pop(list_id)
+        except IndexError:
+            return
+
+    async def on_empty_cart_pressed(self, _: PointerEvent) -> None:
+        self.cart.clear()
+
+    async def show_popup(self, text: str, is_error: bool) -> None:
+        self.popup_is_error = is_error
+        self.popup_message = text
+        self.popup_is_shown = True
+        self.force_refresh()
+        await sleep(POPUP_CLOSE_TIMEOUT_SECONDS)
+        self.popup_is_shown = False
+        self.force_refresh()
+
+    async def on_order_pressed(self, _: PointerEvent) -> None:
+        if self.user_id is None:
+            return
+        self.order_button_loading = True
+        self.force_refresh()
+
+        show_popup_task = None
+        if len(self.cart) < 1:
+            show_popup_task = create_task(self.show_popup("Warenkorb leer", True))
+        else:
+            items_with_amounts: CateringMenuItemsWithAmount = {}
+            for item in self.cart:
+                try:
+                    items_with_amounts[item] += 1
+                except KeyError:
+                    items_with_amounts[item] = 1
+            try:
+                await self.session[CateringService].place_order(items_with_amounts, self.user_id, is_delivery=False)
+            except CateringError as catering_error:
+                logger.error(catering_error)
+                if catering_error.error_type == CateringErrorType.INCLUDES_DISABLED_ITEM:
+                    show_popup_task = create_task(self.show_popup("Warenkorb enthält gesperrte Artikel", True))
+                elif catering_error.error_type == CateringErrorType.INSUFFICIENT_FUNDS:
+                    show_popup_task = create_task(self.show_popup("Guthaben nicht ausreichend", True))
+                else:
+                    show_popup_task = create_task(self.show_popup(f"Unbekannter Fehler: {catering_error}", True))
+            else:
+                self.cart.clear()
+                self.user_id = None
+                await self.clear_cb()
+        self.order_button_loading = False
+        if not show_popup_task:
+            show_popup_task = create_task(self.show_popup("Bestellung erfolgreich aufgegeben!", False))
+
+    def build(self) -> Component:
+        cart_container = ScrollContainer(
+            content=Column(
+                *[CateringCartItem(
+                    article_name=cart_item.name,
+                    article_price=cart_item.price,
+                    article_id=cart_item.item_id,
+                    remove_item_cb=self.on_remove_item,
+                    list_id=idx
+                ) for idx, cart_item in enumerate(self.cart)],
+                Spacer(grow_y=True)
+            ),
+            min_height=8,
+            min_width=33,
+            margin=1
+        )
+        return Column(
+                Popup(
+                    anchor=cart_container,
+                    content=Text(self.popup_message, style=TextStyle(fill=self.session.theme.danger_color if self.popup_is_error else self.session.theme.success_color), overflow="wrap", margin=2, justify="center", min_width=20),
+                    is_open=self.popup_is_shown,
+                    position="center",
+                    color=self.session.theme.primary_color
+                ),
+                Row(
+                    Text(
+                        text=f"Preis: {AccountingService.make_euro_string_from_decimal(sum((cart_item.price for cart_item in self.cart), Decimal(0)))}",
+                        style=TextStyle(
+                            fill=self.session.theme.background_color,
+                            font_size=0.8
+                        ),
+                        margin=1
+                    ),
+                    PointerEventListener(
+                        content=Rectangle(
+                            content=Text(
+                                "Warenkorb leeren",
+                                style=TextStyle(fill=self.session.theme.danger_color, font_size=0.9),
+                                justify="center",
+                                margin=0.2
+                            ),
+                            hover_fill=self.session.theme.hud_color,
+                            transition_time=0.1,
+                            margin=0.5,
+                            cursor="pointer"
+                        ),
+                        on_press=self.on_empty_cart_pressed
+                    ),
+                    PointerEventListener(
+                        content=Rectangle(
+                            content=Text(
+                                "Bestellen",
+                                style=TextStyle(fill=self.session.theme.success_color, font_size=0.9),
+                                justify="center",
+                                margin=0.2
+                            ),
+                            hover_fill=self.session.theme.hud_color if self.user_id is not None else self.session.theme.danger_color,
+                            transition_time=0.1,
+                            margin=0.5,
+                            cursor="pointer" if self.user_id is not None else "not-allowed"
+                        ),
+                        on_press=self.on_order_pressed
+                    )
+                )
+        )
+
+
+class NewPosOrderPage(Component):
+    user_id_input_value: str = ""
+    user_id: Optional[int] = None
+    all_menu_items: Optional[list[CateringMenuItem]] = None
+    cart: List[CateringMenuItem] = List()
+
+
+    @event.on_populate
+    async def on_populate(self) -> None:
+        await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Neue Bestellung anlegen")
+        self.all_menu_items = await self.session[CateringService].get_menu()
+
+    async def on_user_logged_in_status_changed(self) -> None:
+        self.force_refresh()
+
+    async def on_user_id_input_change(self, change_event: TextInputChangeEvent) -> None:
+        try:
+            id_ = int(change_event.text)
+        except ValueError:
+            return
+
+        self.user_id = id_
+        
+    async def on_add(self, article_id: int) -> None:
+        try:
+            menu_item = await self.session[CateringService].get_menu_item_by_id(article_id)
+        except CateringError as e:
+            logger.error(e)
+            return
+        self.cart.append(menu_item)
+
+    @staticmethod
+    def get_menu_items_by_category(all_menu_items: list[CateringMenuItem], category: Optional[CateringMenuItemCategory]) -> list[CateringMenuItem]:
+        return list(filter(lambda item: item.category == category, all_menu_items))
+
+    async def clear_user_id_input(self) -> None:
+        self.user_id_input_value = ""
+
+    def build(self) -> Component:
+        try:
+            is_team_member = self.session[UserSession].is_team_member
+        except KeyError:
+            is_team_member = False
+
+
+        shopping_cart_container = MainViewContentBox(
+            Column(
+                Text(
+                    text="Neue Bestellung anlegen",
+                    style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin_top=2,
+                    margin_bottom=0.5,
+                    align_x=0.5
+                ),
+                TextInput(text=self.bind().user_id_input_value, label="Nutzer ID", on_change=self.on_user_id_input_change, change_delay=1, margin_bottom=0.5, margin_left=5, margin_right=5),
+                Cart(cart=self.cart, user_id=self.user_id, clear_cb=self.clear_user_id_input)
+            )
+        ) if is_team_member else Spacer()
+
+        menu = [MainViewContentBox(
+            ProgressCircle(
+                color="secondary",
+                align_x=0.5,
+                margin_top=2,
+                margin_bottom=2
+            )
+        )] if not self.all_menu_items else [MainViewContentBox(
+            Revealer(
+                header="Snacks",
+                content=Column(
+                    *[CateringSelectionItem(
+                        article_name=catering_menu_item.name,
+                        article_price=catering_menu_item.price,
+                        article_id=catering_menu_item.item_id,
+                        on_add_callback=self.on_add,
+                        is_sensitive=not catering_menu_item.is_disabled,
+                        additional_info=catering_menu_item.additional_info,
+                        is_grey=idx % 2 == 0
+                    ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.SNACK))],
+                ),
+                header_style=TextStyle(
+                    fill=self.session.theme.background_color,
+                    font_size=1.2
+                ),
+                margin=1,
+                align_y=0.5
+            )
+        ),
+            MainViewContentBox(
+                Revealer(
+                    header="Frühstück",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.BREAKFAST))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Hauptspeisen",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.MAIN_COURSE))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Desserts",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.DESSERT))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Wasser & Softdrinks",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.BEVERAGE_NON_ALCOHOLIC))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Alkoholische Getränke",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.BEVERAGE_ALCOHOLIC))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Cocktails & Longdrinks",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.BEVERAGE_COCKTAIL))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Shots",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.BEVERAGE_SHOT))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            ),
+            MainViewContentBox(
+                Revealer(
+                    header="Sonstiges",
+                    content=Column(
+                        *[CateringSelectionItem(
+                            article_name=catering_menu_item.name,
+                            article_price=catering_menu_item.price,
+                            article_id=catering_menu_item.item_id,
+                            on_add_callback=self.on_add,
+                            is_sensitive=not catering_menu_item.is_disabled,
+                            additional_info=catering_menu_item.additional_info,
+                            is_grey=idx % 2 == 0
+                        ) for idx, catering_menu_item in enumerate(self.get_menu_items_by_category(self.all_menu_items, CateringMenuItemCategory.NON_FOOD))],
+                    ),
+                    header_style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin=1,
+                    align_y=0.5
+                )
+            )]
+
+        return Column(shopping_cart_container, *menu, align_y=0)

src/ezgg_lan_manager/pages/RegisterPage.py

@@ -1,10 +1,10 @@
 import logging
+from asyncio import sleep, create_task
 
 from email_validator import validate_email, EmailNotValidError
 from rio import Column, Component, event, Text, TextStyle, TextInput, TextInputChangeEvent, Button
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, MailingService
-from src.ezgg_lan_manager.components.AnimatedText import AnimatedText
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 
 MINIMUM_PASSWORD_LENGTH = 6
@@ -13,125 +13,154 @@ logger = logging.getLogger(__name__.split(".")[-1])
 
 
 class RegisterPage(Component):
+    pw_1: str = ""
+    pw_2: str = ""
+    email: str = ""
+    user_name: str = ""
+    pw_1_valid: bool = True
+    pw_2_valid: bool = True
+    email_valid: bool = True
+    submit_button_loading: bool = False
+    display_text: str = ""
+    display_text_style: TextStyle = TextStyle()
+
     def on_pw_focus_loss(self, _: TextInputChangeEvent) -> None:
-        if not (self.pw_1.text == self.pw_2.text) or len(self.pw_1.text) < MINIMUM_PASSWORD_LENGTH:
+        if not (self.pw_1 == self.pw_2) or len(self.pw_1) < MINIMUM_PASSWORD_LENGTH:
-            self.pw_1.is_valid = False
+            self.pw_1_valid = False
-            self.pw_2.is_valid = False
+            self.pw_2_valid = False
             return
-        self.pw_1.is_valid = True
+        self.pw_1_valid = True
-        self.pw_2.is_valid = True
+        self.pw_2_valid = True
 
     def on_email_focus_loss(self, change_event: TextInputChangeEvent) -> None:
         try:
             validate_email(change_event.text, check_deliverability=False)
-            self.email_input.is_valid = True
+            self.email_valid = True
         except EmailNotValidError:
-            self.email_input.is_valid = False
+            self.email_valid = False
 
     def on_user_name_focus_loss(self, _: TextInputChangeEvent) -> None:
-        current_text = self.user_name_input.text
+        current_text = self.user_name
         if len(current_text) > UserService.MAX_USERNAME_LENGTH:
-            self.user_name_input.text = current_text[:UserService.MAX_USERNAME_LENGTH]
+            self.user_name = current_text[:UserService.MAX_USERNAME_LENGTH]
 
     async def on_submit_button_pressed(self) -> None:
-        self.submit_button.is_loading = True
+        self.submit_button_loading = True
-        self.submit_button.force_refresh()
 
-        if len(self.user_name_input.text) < 1:
+        if len(self.user_name) < 1:
-            await self.animated_text.display_text(False, "Nutzername darf nicht leer sein!")
+            await self.display_animated_text(False, "Nutzername darf nicht leer sein!")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
-        if not (self.pw_1.text == self.pw_2.text):
+        if not (self.pw_1 == self.pw_2):
-            await self.animated_text.display_text(False, "Passwörter stimmen nicht überein!")
+            await self.display_animated_text(False, "Passwörter stimmen nicht überein!")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
-        if len(self.pw_1.text) < MINIMUM_PASSWORD_LENGTH:
+        if len(self.pw_1) < MINIMUM_PASSWORD_LENGTH:
-            await self.animated_text.display_text(False, f"Passwort muss mindestens {MINIMUM_PASSWORD_LENGTH} Zeichen lang sein!")
+            await self.display_animated_text(False, f"Passwort muss mindestens {MINIMUM_PASSWORD_LENGTH} Zeichen lang sein!")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
-        if not self.email_input.is_valid or len(self.email_input.text) < 3:
+        if not self.email_valid or len(self.email) < 3:
-            await self.animated_text.display_text(False, "E-Mail Adresse ungültig!")
+            await self.display_animated_text(False, "E-Mail Adresse ungültig!")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
         user_service = self.session[UserService]
         mailing_service = self.session[MailingService]
         lan_info = self.session[ConfigurationService].get_lan_info()
 
-        if await user_service.get_user(self.email_input.text) is not None or await user_service.get_user(self.user_name_input.text) is not None:
+        if await user_service.get_user(self.email) is not None or await user_service.get_user(self.user_name) is not None:
-            await self.animated_text.display_text(False, "Benutzername oder E-Mail bereits regestriert!")
+            await self.display_animated_text(False, "Benutzername oder E-Mail bereits registriert!")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
         try:
-            new_user = await user_service.create_user(self.user_name_input.text, self.email_input.text, self.pw_1.text)
+            new_user = await user_service.create_user(self.user_name, self.email, self.pw_1)
             if not new_user:
-                logger.warning(f"UserService.create_user returned: {new_user}")  # ToDo: Seems like the user is created fine, even if not returned #FixMe
+                logger.error(f"create_user returned: {new_user}")
+                raise Exception(f"create_user returned: {new_user}")
         except Exception as e:
             logger.error(f"Unknown error during new user registration: {e}")
-            await self.animated_text.display_text(False, "Es ist ein unbekannter Fehler aufgetreten :(")
+            await self.display_animated_text(False, "Es ist ein unbekannter Fehler aufgetreten :(")
-            self.submit_button.is_loading = False
+            self.submit_button_loading = False
             return
 
         await mailing_service.send_email(
             subject="Erfolgreiche Registrierung",
-            body=f"Hallo {self.user_name_input.text},\n\n"
+            body=f"Hallo {self.user_name},\n\n"
                  f"Du hast dich erfolgreich beim EZGG-LAN Manager für {lan_info.name} {lan_info.iteration} registriert.\n\n"
                  f"Wenn du dich nicht registriert hast, kontaktiere bitte unser Team über unsere Homepage.\n\n"
                  f"Liebe Grüße\nDein {lan_info.name} - Team",
-            receiver=self.email_input.text
+            receiver=self.email
         )
 
-        self.submit_button.is_loading = False
+        self.submit_button_loading = False
-        await self.animated_text.display_text(True, "Erfolgreich registriert!")
+        await self.display_animated_text(True, "Erfolgreich registriert!")
 
     @event.on_populate
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Registrieren")
 
+    async def display_animated_text(self, success: bool, text: str) -> None:
+        self.display_text = ""
+        style = TextStyle(
+            fill=self.session.theme.success_color if success else self.session.theme.danger_color,
+            font_size=0.9
+        )
+
+        self.display_text_style = style
+        _ = create_task(self._animate_text(text))
+
+    async def _animate_text(self, text: str) -> None:
+        for c in text:
+            self.display_text += c
+            await sleep(0.06)
+
     def build(self) -> Component:
-        self.user_name_input = TextInput(
+        user_name_input = TextInput(
             label="Benutzername",
-            text="",
+            text=self.bind().user_name,
             margin_left=1,
             margin_right=1,
             margin_bottom=1,
             grow_x=True,
             on_lose_focus=self.on_user_name_focus_loss
         )
-        self.email_input = TextInput(
+        email_input = TextInput(
             label="E-Mail Adresse",
-            text="",
+            text=self.bind().email,
             margin_left=1,
             margin_right=1,
             margin_bottom=1,
             grow_x=True,
-            on_lose_focus=self.on_email_focus_loss
+            on_lose_focus=self.on_email_focus_loss,
+            is_valid=self.email_valid
         )
-        self.pw_1 = TextInput(
+        pw_1_input = TextInput(
             label="Passwort",
-            text="",
+            text=self.bind().pw_1,
             margin_left=1,
             margin_right=1,
             margin_bottom=1,
             grow_x=True,
             is_secret=True,
-            on_lose_focus=self.on_pw_focus_loss
+            on_lose_focus=self.on_pw_focus_loss,
+            is_valid=self.pw_1_valid
         )
-        self.pw_2 = TextInput(
+        pw_2_input = TextInput(
             label="Passwort wiederholen",
-            text="",
+            text=self.bind().pw_2,
             margin_left=1,
             margin_right=1,
             margin_bottom=1,
             grow_x=True,
             is_secret=True,
-            on_lose_focus=self.on_pw_focus_loss
+            on_lose_focus=self.on_pw_focus_loss,
+            is_valid=self.pw_2_valid
         )
-        self.submit_button = Button(
+        submit_button = Button(
             content=Text(
                 "Registrieren",
                 style=TextStyle(fill=self.session.theme.background_color, font_size=0.9),
@@ -145,13 +174,8 @@ class RegisterPage(Component):
             shape="rectangle",
             style="minor",
             color=self.session.theme.secondary_color,
-            on_press=self.on_submit_button_pressed
+            on_press=self.on_submit_button_pressed,
-        )
+            is_loading=self.submit_button_loading
-        self.animated_text = AnimatedText(
-            margin_top=2,
-            margin_left=1,
-            margin_right=1,
-            margin_bottom=2
         )
         return Column(
             MainViewContentBox(
@@ -166,12 +190,12 @@ class RegisterPage(Component):
                         margin_bottom=2,
                         align_x=0.5
                     ),
-                    self.user_name_input,
+                    user_name_input,
-                    self.email_input,
+                    email_input,
-                    self.pw_1,
+                    pw_1_input,
-                    self.pw_2,
+                    pw_2_input,
-                    self.submit_button,
+                    submit_button,
-                    self.animated_text
+                    Text(self.display_text, margin_top=2, margin_left=1, margin_right=1, margin_bottom=2, style=self.display_text_style)
                 )
             ),
             align_y=0,

src/ezgg_lan_manager/pages/SeatingPlanPage.py

@@ -12,8 +12,8 @@ from src.ezgg_lan_manager.components.SeatingPlanInfoBox import SeatingPlanInfoBo
 from src.ezgg_lan_manager.components.SeatingPurchaseBox import SeatingPurchaseBox
 from src.ezgg_lan_manager.services.SeatingService import NoTicketError, SeatNotFoundError, WrongCategoryError, SeatAlreadyTakenError
 from src.ezgg_lan_manager.types.Seat import Seat
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 logger = logging.getLogger(__name__.split(".")[-1])
 
@@ -37,7 +37,10 @@ class SeatingPlanPage(Component):
     async def on_populate(self) -> None:
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Sitzplan")
         self.seating_info = await self.session[SeatingService].get_seating()
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+        try:
+            self.user = await self.session[UserService].get_user(self.session[UserSession].user_id)
+        except KeyError:
+            self.user = None
         if not self.user:
             self.is_booking_blocked = True
         else:

src/ezgg_lan_manager/pages/TeamsPage.py

@@ -6,11 +6,12 @@ from src.ezgg_lan_manager import ConfigurationService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.TeamRevealer import TeamRevealer
 from src.ezgg_lan_manager.components.TeamsDialogHandler import *
+from src.ezgg_lan_manager.services.RefreshService import RefreshService
 from src.ezgg_lan_manager.services.TeamService import TeamService
 from src.ezgg_lan_manager.services.UserService import UserService
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.Team import Team
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class TeamsPage(Component):
@@ -26,10 +27,13 @@ class TeamsPage(Component):
 
     @event.on_populate
     async def on_populate(self) -> None:
-        self.all_teams = await self.session[TeamService].get_all_teams()
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
         await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Teams")
-        self.session[SessionStorage].subscribe_to_logged_in_or_out_event(str(self.__class__), self.on_populate)
+        self.session[RefreshService].subscribe(self.on_populate)
+        self.all_teams = await self.session[TeamService].get_all_teams()
+        try:
+            self.user = await self.session[UserService].get_user(self.session[UserSession].user_id)
+        except KeyError:
+            self.user = None
 
     async def on_join_button_pressed(self, team: Team) -> None:
         if self.user is None:

src/ezgg_lan_manager/pages/TournamentDetailsPage.py

@@ -7,15 +7,15 @@ from from_root import from_root
 from rio import Column, Component, event, TextStyle, Text, Row, Image, Spacer, ProgressCircle, Button, Checkbox, ThemeContextSwitcher, Link, Revealer, PointerEventListener, \
     PointerEvent, Rectangle, Color, Popup, Dropdown
 
-from src.ezgg_lan_manager import ConfigurationService, TournamentService, UserService, TicketingService, TeamService
+from src.ezgg_lan_manager import ConfigurationService, TournamentService, UserService, TicketingService, TeamService, RefreshService
 from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
 from src.ezgg_lan_manager.components.TournamentDetailsInfoRow import TournamentDetailsInfoRow
 from src.ezgg_lan_manager.types.DateUtil import weekday_to_display_text
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 from src.ezgg_lan_manager.types.Team import Team, TeamStatus
 from src.ezgg_lan_manager.types.Tournament import Tournament
-from src.ezgg_lan_manager.types.TournamentBase import TournamentStatus, tournament_status_to_display_text, tournament_format_to_display_texts, ParticipantType
+from src.ezgg_lan_manager.types.TournamentBase import TournamentStatus, tournament_status_to_display_text, tournament_format_to_display_texts, ParticipantType, TournamentFormat
 from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 logger = logging.getLogger(__name__.split(".")[-1])
 
@@ -44,7 +44,7 @@ class TournamentDetailsPage(Component):
             tournament_id = None
         if tournament_id is not None:
             self.tournament = await self.session[TournamentService].get_tournament_by_id(tournament_id)
-            if self.tournament is not None:
+            if isinstance(self.tournament, Tournament):
                 await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - {self.tournament.name}")
                 if self.tournament.participant_type == ParticipantType.PLAYER:
                     self.current_tournament_user_or_team_list = await self.session[TournamentService].get_users_from_participant_list(self.tournament.participants)
@@ -53,9 +53,15 @@ class TournamentDetailsPage(Component):
         else:
             await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Turniere")
 
-        self.user = await self.session[UserService].get_user(self.session[SessionStorage].user_id)
+        try:
-        if self.user is not None:
+            user_id = self.session[UserSession].user_id
-            self.user_teams = await self.session[TeamService].get_teams_for_user_by_id(self.user.user_id)
+            self.user = await self.session[UserService].get_user(user_id)
+            self.user_teams = await self.session[TeamService].get_teams_for_user_by_id(user_id)
+        except KeyError:
+            self.user = None
+            self.user_teams = []
+
+        self.session[RefreshService].subscribe(self.on_populate)
 
         self.loading_done()
 
@@ -64,13 +70,14 @@ class TournamentDetailsPage(Component):
         await sleep(0.8)  # https://medium.com/design-bootcamp/ux-psychology-of-artificial-waiting-enhancing-user-experiences-through-deliberate-delays-d7822faf3930
 
     async def update(self) -> None:
-        self.tournament = await self.session[TournamentService].get_tournament_by_id(self.tournament.id)
+        if isinstance(self.tournament, Tournament):
-        if self.tournament is None:
+            self.tournament = await self.session[TournamentService].get_tournament_by_id(self.tournament.id)
-            return
+            if self.tournament is None or isinstance(self.tournament, str):
-        if self.tournament.participant_type == ParticipantType.PLAYER:
+                return
-            self.current_tournament_user_or_team_list = await self.session[TournamentService].get_users_from_participant_list(self.tournament.participants)
+            if self.tournament.participant_type == ParticipantType.PLAYER:
-        elif self.tournament.participant_type == ParticipantType.TEAM:
+                self.current_tournament_user_or_team_list = await self.session[TournamentService].get_users_from_participant_list(self.tournament.participants)
-            self.current_tournament_user_or_team_list = await self.session[TournamentService].get_teams_from_participant_list(self.tournament.participants)
+            elif self.tournament.participant_type == ParticipantType.TEAM:
+                self.current_tournament_user_or_team_list = await self.session[TournamentService].get_teams_from_participant_list(self.tournament.participants)
 
     def open_close_participant_revealer(self, _: PointerEvent) -> None:
         self.participant_revealer_open = not self.participant_revealer_open
@@ -84,6 +91,9 @@ class TournamentDetailsPage(Component):
         if user_ticket is None:
             self.is_success = False
             self.message = "Turnieranmeldung nur mit Ticket"
+        elif not isinstance(self.tournament, Tournament):
+            self.is_success = False
+            self.message = "Fehler bei der Anmeldung"
         else:
             # Register single player
             if self.tournament.participant_type == ParticipantType.PLAYER:
@@ -121,12 +131,15 @@ class TournamentDetailsPage(Component):
             await self.on_team_register_canceled()
             return
         try:
-            await self.session[TournamentService].register_team_for_tournament(self.team_selected_for_register.id, self.tournament.id)
+            if isinstance(self.tournament, Tournament):
-            await self.artificial_delay()
+                await self.session[TournamentService].register_team_for_tournament(self.team_selected_for_register.id, self.tournament.id)
-            self.is_success = True
+                await self.artificial_delay()
-            self.message = f"Erfolgreich angemeldet!"
+                self.is_success = True
-            self.team_dialog_open = False
+                self.message = f"Erfolgreich angemeldet!"
-            self.team_selected_for_register = None
+                self.team_dialog_open = False
+                self.team_selected_for_register = None
+            else:
+                raise ValueError("Turnier nicht gefunden")
         except Exception as e:
             logger.error(e)
             self.message = f"Fehler: {e}"
@@ -145,9 +158,9 @@ class TournamentDetailsPage(Component):
             return
 
         try:
-            if self.tournament.participant_type == ParticipantType.PLAYER:
+            if isinstance(self.tournament, Tournament) and self.tournament.participant_type == ParticipantType.PLAYER:
                 await self.session[TournamentService].unregister_user_from_tournament(self.user.user_id, self.tournament.id)
-            elif self.tournament.participant_type == ParticipantType.TEAM:
+            elif isinstance(self.tournament, Tournament) and self.tournament.participant_type == ParticipantType.TEAM:
                 if team.members[self.user] == TeamStatus.OFFICER or team.members[self.user] == TeamStatus.LEADER:
                     await self.session[TournamentService].unregister_team_from_tournament(team.id, self.tournament.id)
                 else:
@@ -162,12 +175,12 @@ class TournamentDetailsPage(Component):
         self.loading = False
 
     async def tree_button_clicked(self) -> None:
-        pass  # ToDo: Implement tournament tree view
+        if isinstance(self.tournament, Tournament):
+            self.session.navigate_to(f"tournament-tree?id={self.tournament.id}")
 
     def loading_done(self) -> None:
         if self.tournament is None:
             self.tournament = "Turnier konnte nicht gefunden werden"
-        self.session[SessionStorage].subscribe_to_logged_in_or_out_event(str(self.__class__), self.on_populate)
 
     def build(self) -> Component:
         if self.tournament is None:
@@ -202,16 +215,17 @@ class TournamentDetailsPage(Component):
                 tournament_status_color = self.session.theme.danger_color
             elif self.tournament.status == TournamentStatus.ONGOING or self.tournament.status == TournamentStatus.COMPLETED:
                 tournament_status_color = self.session.theme.warning_color
-                tree_button = Button(
+                if self.tournament.format != TournamentFormat.FFA:
-                    content="Turnierbaum anzeigen",
+                    tree_button = Button(
-                    shape="rectangle",
+                        content="Turnierbaum anzeigen",
-                    style="minor",
+                        shape="rectangle",
-                    color="hud",
+                        style="minor",
-                    margin_left=4,
+                        color="hud",
-                    margin_right=4,
+                        margin_left=4,
-                    margin_top=1,
+                        margin_right=4,
-                    on_press=self.tree_button_clicked
+                        margin_top=1,
-                )
+                        on_press=self.tree_button_clicked
+                    )
 
             ids_of_participants = [p.id for p in self.tournament.participants]
             color_key: Literal["hud", "danger"] = "hud"
@@ -346,7 +360,7 @@ class TournamentDetailsPage(Component):
                 button
             )
 
-        if self.tournament and self.tournament.participant_type == ParticipantType.TEAM:
+        if isinstance(self.tournament, Tournament) and self.tournament.participant_type == ParticipantType.TEAM:
             content = Popup(
                 anchor=content,
                 content=Rectangle(

src/ezgg_lan_manager/pages/TournamentTreePage.py

@@ -0,0 +1,280 @@
+import json
+import logging
+from typing import Optional, Union
+
+from from_root import from_root
+from rio import Column, Component, event, TextStyle, Text, Row, Spacer, ProgressCircle, Rectangle, Stack
+
+from src.ezgg_lan_manager import ConfigurationService, TournamentService, UserService, TeamService, RefreshService, SeatingService
+from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
+from src.ezgg_lan_manager.types.Team import Team, TeamStatus
+from src.ezgg_lan_manager.types.Tournament import Tournament
+from src.ezgg_lan_manager.types.TournamentBase import ParticipantType, TournamentFormat
+from src.ezgg_lan_manager.types.User import User
+from src.ezgg_lan_manager.types.UserSession import UserSession
+
+logger = logging.getLogger(__name__.split(".")[-1])
+
+class MatchInfo(Component):
+    opponent_1: str = ""
+    opponent_2: str = ""
+    opponent_1_seat: str = ""
+    opponent_2_seat: str = ""
+    winner: str = ""
+
+    def build(self) -> Component:
+        return Rectangle(
+            content=Column(
+                Stack(
+                    Row(
+                        Row(
+                            Text(
+                                text=self.opponent_1,
+                                style=TextStyle(fill=self.session.theme.success_color if self.winner == self.opponent_1 else self.session.theme.background_color),
+                                justify="left",
+                                margin_right=0.6,
+                                font_size=0.9
+                            ),
+                            Text(
+                                text=f"({self.opponent_1_seat})" if self.opponent_1_seat else "Freilos",
+                                style=TextStyle(fill=self.session.theme.background_color),
+                                justify="left",
+                                font_size=0.9
+                            )
+                        ),
+                        Spacer(),
+                        Row(
+                            Text(
+                                text=self.opponent_2,
+                                style=TextStyle(fill=self.session.theme.success_color if self.winner == self.opponent_2 else self.session.theme.background_color),
+                                justify="right",
+                                margin_right=0.6,
+                                font_size=0.9
+                            ),
+                            Text(
+                                text=f"({self.opponent_2_seat})" if self.opponent_2_seat else "Freilos",
+                                style=TextStyle(fill=self.session.theme.background_color),
+                                justify="right",
+                                font_size=0.9
+                            )
+                        ),
+                        margin=0.3
+                    ),
+                    Row(
+                        Text(
+                            text=f"vs.",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            justify="center"
+                        ),
+                        margin=0.3
+                    )
+                )
+            ),
+            margin=1,
+            stroke_width=0.2,
+            stroke_color=self.session.theme.background_color,
+            fill=self.session.theme.hud_color,
+        )
+
+class TournamentTreePage(Component):
+    tournament: Optional[Union[Tournament, str]] = None
+    user: Optional[User] = None
+    teams: list[Team] = []
+    id_to_username_map: dict[int, str] = {}
+    id_to_seat_map: dict[int, str] = {}
+    is_fully_loaded: bool = False
+
+    @event.on_populate
+    async def on_populate(self) -> None:
+        try:
+            tournament_id = int(self.session.active_page_url.query_string.split("id=")[-1])
+        except (ValueError, AttributeError, TypeError):
+            tournament_id = None
+        if tournament_id is not None:
+            self.tournament = await self.session[TournamentService].get_tournament_by_id(tournament_id)
+            if isinstance(self.tournament, Tournament):
+                await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - {self.tournament.name}")
+        else:
+            await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Turniere")
+
+        try:
+            user_id = self.session[UserSession].user_id
+            self.user = await self.session[UserService].get_user(user_id)
+        except KeyError:
+            self.user = None
+
+        self.teams = await self.session[TeamService].get_all_teams()
+
+        all_users = await self.session[UserService].get_all_users()
+        id_to_username_map = {}
+        id_to_seat_map = {}
+        for user in all_users:
+            id_to_username_map[user.user_id] = user.user_name
+            seat = await self.session[SeatingService].get_user_seat(user.user_id)
+            if seat is not None:
+                id_to_seat_map[user.user_id] = seat.seat_id
+
+        self.id_to_username_map = id_to_username_map
+        self.id_to_seat_map = id_to_seat_map
+        self.session[RefreshService].subscribe(self.on_populate)
+        self.is_fully_loaded = True
+
+    def _get_seat_for_team(self, team: Team) -> str:
+        # Retrieves seat id for leader of a team
+        leader = list(team.members.keys())[0]
+        for member, rank in team.members.items():
+            if rank == TeamStatus.LEADER:
+                leader = member
+                break
+
+        return self.id_to_seat_map[leader.user_id]
+
+
+    def build(self) -> Component:
+        if self.tournament is None or not self.is_fully_loaded:
+            return Column(
+                MainViewContentBox(
+                    Column(
+                        Spacer(min_height=1),
+                        Column(
+                            ProgressCircle(
+                                color="secondary",
+                                align_x=0.5,
+                                margin_top=0,
+                                margin_bottom=0
+                            ),
+                            min_height=10
+                        ),
+                        Spacer(min_height=1)
+                    )
+                ),
+                align_y=0
+            )
+        elif isinstance(self.tournament, str):
+            content = Row(
+                Text(
+                    text=self.tournament,
+                    style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1
+                    ),
+                    margin_top=2,
+                    margin_bottom=2,
+                    align_x=0.5
+                )
+            )
+        else:
+            if self.tournament.format == TournamentFormat.FFA:
+                content = Column(
+                    Text(
+                        text=f"Dieses Turnier hat keinen Turnierbaum.",
+                        style=TextStyle(fill=self.session.theme.background_color),
+                        margin_top=1,
+                        margin_bottom=1,
+                        align_x=0.5,
+                        overflow="wrap",
+                        min_width=30,
+                        justify="center"
+                    )
+                )
+            else:
+                try:
+                    file_name = self.tournament.name.replace(" ", "_") + ".json"
+                    games_per_matchup = int(self.tournament.format.name[-1])
+                    logger.info(f"Trying to read tournament data from {file_name}")
+                    with open(from_root("tournament_data", file_name), "r") as f:
+                        json_data = json.load(f)
+
+                    last_valid_round = None
+                    round_num = 0
+                    for round_ in json_data["rounds"]:
+                        if all(
+                                match["opponent_1_id"] is not None or match["opponent_2_id"] is not None
+                                for match in round_
+                        ):
+                            last_valid_round = round_
+                            round_num += 1
+
+                    if last_valid_round is None:
+                        last_valid_round = json_data["rounds"][0]
+
+                    match_infos = []
+                    if self.tournament.participant_type == ParticipantType.PLAYER:
+                        match_infos = [MatchInfo(
+                            opponent_1=self.id_to_username_map.get(match["opponent_1_id"], ""),
+                            opponent_2=self.id_to_username_map.get(match["opponent_2_id"], ""),
+                            winner=self.id_to_username_map.get(match["winner"], ""),
+                            opponent_1_seat=self.id_to_seat_map.get(match["opponent_1_id"], ""),
+                            opponent_2_seat=self.id_to_seat_map.get(match["opponent_2_id"], ""),
+                        ) for match in last_valid_round]
+                    elif self.tournament.participant_type == ParticipantType.TEAM:
+                        for match in last_valid_round:
+                            team_1: Optional[Team] = next(filter(lambda t: t.id == match["opponent_1_id"], self.teams), None)
+                            team_2: Optional[Team] = next(filter(lambda t: t.id == match["opponent_2_id"], self.teams), None)
+                            winner: Union[str, Team] = next(filter(lambda t: t.id == match["winner"], self.teams), "")
+                            match_infos.append(
+                                MatchInfo(
+                                    opponent_1=team_1.name if team_1 is not None else "",
+                                    opponent_2=team_2.name if team_2 is not None else "",
+                                    winner=winner if isinstance(winner, str) else winner.name,
+                                    opponent_1_seat=self._get_seat_for_team(team_1) if team_1 is not None else "",
+                                    opponent_2_seat=self._get_seat_for_team(team_2) if team_2 is not None else "",
+                                )
+                            )
+                    else:
+                        raise ValueError("Unknown participant type")
+
+
+
+                    content = Column(
+                        Text(
+                            text=f"{self.tournament.name}",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            justify="center",
+                            font_size=1.2
+                        ),
+                        Text(
+                            text="Finale" if len(json_data["rounds"]) == round_num else f"Runde {round_num}",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            justify="center",
+                            font_size=0.9,
+                            margin_bottom=1
+                        ),
+                        Text(
+                            text=f"Spiele pro Matchup: {games_per_matchup}",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            justify="center",
+                            font_size=0.8
+                        ),
+                        Text(
+                            text=f"Melde als Verlierer deinen Matchausgang\nim Discord oder an der Orga-Ecke",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            justify="center",
+                            font_size=0.8
+                        ),
+                        *match_infos
+                    )
+                except (FileNotFoundError, ValueError, AttributeError):
+                    content = Column(
+                        Text(
+                            text=f"Der Turnierbaum für dieses Turnier steht leider nicht zur Verfügung.\n\nBitte melde sich beim Orga-Team.",
+                            style=TextStyle(fill=self.session.theme.background_color),
+                            margin_top=1,
+                            margin_bottom=1,
+                            align_x=0.5,
+                            overflow="wrap",
+                            min_width=30,
+                            justify="center"
+                        )
+                    )
+
+        return Column(
+            MainViewContentBox(
+                Column(
+                    Spacer(min_height=1),
+                    content,
+                    Spacer(min_height=1)
+                )
+            ),
+            align_y=0
+        )

src/ezgg_lan_manager/pages/__init__.py

@@ -25,3 +25,5 @@ from .TournamentRulesPage import TournamentRulesPage
 from .ConwayPage import ConwayPage
 from .TeamsPage import TeamsPage
 from .AdminNavigationPage import AdminNavigationPage
+from .TournamentTreePage import TournamentTreePage
+from .NewPosOrderPage import NewPosOrderPage

src/ezgg_lan_manager/services/AccountingService.py

@@ -1,4 +1,6 @@
+import io
 import logging
+import qrcode
 from collections.abc import Callable
 from datetime import datetime
 from decimal import Decimal, ROUND_DOWN
@@ -74,3 +76,29 @@ class AccountingService:
             return "0.00 €"
         rounded_decimal = str(euros.quantize(Decimal(".01"), rounding=ROUND_DOWN))
         return f"{rounded_decimal} €"
+
+    @staticmethod
+    def make_payment_qr_image(beneficiary_name, beneficiary_bic, beneficiary_iban, text, amount_euros=None) -> bytes:
+        text = text.replace("\n",";")
+        amount_formatted = "EUR{:.2f}".format(amount_euros) if amount_euros else ""
+        epc_text = f"""BCD
+002
+1
+SCT
+{beneficiary_bic}
+{beneficiary_name}
+{beneficiary_iban}
+{amount_formatted}
+
+
+{text}
+"""
+        qr = qrcode.QRCode(
+            version=6,
+            error_correction=qrcode.constants.ERROR_CORRECT_M,
+        )
+        qr.add_data(epc_text)
+        img = qr.make_image()
+        img_bytes = io.BytesIO()
+        img.save(img_bytes)
+        return img_bytes.getvalue()

src/ezgg_lan_manager/services/DatabaseService.py

@@ -1,6 +1,6 @@
 import logging
 
-from datetime import date, datetime
+from datetime import date, datetime, UTC
 from typing import Optional
 from decimal import Decimal
 
@@ -16,7 +16,7 @@ from src.ezgg_lan_manager.types.Seat import Seat
 from src.ezgg_lan_manager.types.Team import TeamStatus, Team
 from src.ezgg_lan_manager.types.Ticket import Ticket
 from src.ezgg_lan_manager.types.Tournament import Tournament
-from src.ezgg_lan_manager.types.TournamentBase import GameTitle, TournamentFormat, TournamentStatus, ParticipantType
+from src.ezgg_lan_manager.types.TournamentBase import GameTitle, TournamentFormat, TournamentStatus, ParticipantType, MatchStatus
 from src.ezgg_lan_manager.types.Transaction import Transaction
 from src.ezgg_lan_manager.types.User import User
 
@@ -62,7 +62,8 @@ class DatabaseService:
                 password=self._database_config.db_password,
                 db=self._database_config.db_name,
                 minsize=1,
-                maxsize=40
+                maxsize=40,
+                autocommit=True
             )
         except aiomysql.OperationalError:
             return False
@@ -1184,3 +1185,18 @@ class DatabaseService:
                     if not pool_init_result:
                         raise NoDatabaseConnectionError
                     return await self.remove_user_from_team(team, user)
+
+    async def change_tournament_status(self, tournament_id: int, status: TournamentStatus) -> None:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                try:
+                    await cursor.execute(
+                        "UPDATE tournaments SET status = %s WHERE (id = %s)",
+                        (status.name, tournament_id)
+                    )
+                    await conn.commit()
+                except aiomysql.InterfaceError:
+                    pool_init_result = await self.init_db_pool()
+                    if not pool_init_result:
+                        raise NoDatabaseConnectionError
+                    return await self.change_tournament_status(tournament_id, status)

src/ezgg_lan_manager/services/LocalDataService.py

@@ -3,23 +3,24 @@ from typing import Optional
 
 from rio import UserSettings
 
-from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
+from src.ezgg_lan_manager.types.UserSession import UserSession
 
 
 class LocalData(UserSettings):
-    stored_session_token: Optional[str] = None
+    stored_session_token: Optional[str]
 
 class LocalDataService:
     def __init__(self) -> None:
-        self._session: dict[str, SessionStorage] = {}
+        self._session: dict[str, UserSession] = {}
 
-    def verify_token(self, token: str) -> Optional[SessionStorage]:
+    def verify_token(self, token: str) -> Optional[UserSession]:
         return self._session.get(token)
 
-    def set_session(self, session: SessionStorage) -> str:
+    def set_session(self, session: UserSession) -> str:
         key = secrets.token_hex(32)
         self._session[key] = session
         return key
 
-    def del_session(self, token: str) -> None:
+    def del_session(self, token: Optional[str]) -> None:
-        self._session.pop(token, None)
+        if token is not None:
+            self._session.pop(token, None)

src/ezgg_lan_manager/services/ReceiptPrintingService.py

@@ -15,11 +15,15 @@ class ReceiptPrintingService:
         self._seating_service = seating_service
         self._config = config
         self._dev_mode_enabled = dev_mode_enabled
+        self._url = f"http://{self._config.host}:{self._config.port}/{self._config.order_print_endpoint}"
 
     async def print_order(self, user: User, order: CateringOrder) -> None:
-        seat_id = await self._seating_service.get_user_seat(user.user_id)
+        seat = await self._seating_service.get_user_seat(user.user_id)
-        if not seat_id:
+        if seat is None:
             seat_id = " - "
+        else:
+            seat_id = str(seat.seat_id)
+
 
         menu_items_payload = []
         for item, amount in order.items.items():
@@ -35,14 +39,19 @@ class ReceiptPrintingService:
             "seat_id": seat_id,
             "items": menu_items_payload
         }
+
+        logger.info(f"Sending print order to {self._url}: {payload}")
         try:
-            requests.post(
+            response = requests.post(
-                f"http://{self._config.host}:{self._config.port}/{self._config.order_print_endpoint}",
+                self._url,
                 json=payload,
-                headers={"x-password": self._config.password}
+                headers={"x-password": self._config.password},
+                timeout=2.0
             )
+            if response.status_code != 200:
+                logger.error(f"Received an error with code {response.status_code}: {response.text}")
         except Exception as e:
             if self._dev_mode_enabled:
-                logger.info("An error occurred trying to print a receipt:", e)
+                logger.info("An error occurred trying to print a receipt: %s", e)
                 return
-            logger.error("An error occurred trying to print a receipt:", e)
+            logger.error("An error occurred trying to print a receipt: %s", e)

src/ezgg_lan_manager/services/RefreshService.py

@@ -0,0 +1,17 @@
+from typing import Callable, Optional
+
+
+class RefreshService:
+    """
+    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.subscriber: Optional[Callable] = None
+
+    def subscribe(self, refresh_cb: Callable) -> None:
+        self.subscriber = refresh_cb
+
+    async def trigger_refresh(self) -> None:
+        if self.subscriber is not None:
+            await self.subscriber()

src/ezgg_lan_manager/services/TournamentService.py

@@ -1,5 +1,9 @@
+import json
+from pprint import pprint
 from typing import Optional
 
+from from_root import from_root
+
 from src.ezgg_lan_manager.services.DatabaseService import DatabaseService
 from src.ezgg_lan_manager.services.UserService import UserService
 from src.ezgg_lan_manager.types.Participant import Participant
@@ -18,6 +22,10 @@ class TournamentService:
         self._cache: dict[int, Tournament] = {}
         self._cache_dirty: bool = True  # Setting this flag invokes cache update on next read
         
+    async def queue_cache_renewal(self) -> None:
+        # Used in admin UI to provoke cache renewal after direct database access
+        self._cache_dirty = True
+
     async def _update_cache(self) -> None:
         tournaments = await self._db_service.get_all_tournaments()
         for tournament in tournaments:
@@ -90,12 +98,47 @@ class TournamentService:
         tournament = await self.get_tournament_by_id(tournament_id)
         if tournament:
             tournament.start()
-        # ToDo: Write matches/round to database
+            await self._generate_initial_json_file(tournament)
+            await self._db_service.change_tournament_status(tournament_id, tournament.status)
         self._cache_dirty = True
 
     async def cancel_tournament(self, tournament_id: int):
         tournament = await self.get_tournament_by_id(tournament_id)
         if tournament:
             tournament.cancel()
-        # ToDo: Update to database
+            await self._db_service.change_tournament_status(tournament_id, tournament.status)
         self._cache_dirty = True
+
+    async def _generate_initial_json_file(self, tournament: Tournament) -> None:
+        """
+        Generates the initial JSON file for the tournament. Won't generate a new one if one already exists.
+        ToDo: Remove this method when final tournament system is completed.
+        """
+        p = tournament.participants
+        pairs = [
+            (p[i], p[i + 1]) if i + 1 < len(p) else (p[i], None)
+            for i in range(0, len(p), 2)
+        ]
+        data = {
+            "rounds": [
+                [
+                    {
+                        "opponent_1_id": pair[0].id if pair[0] is not None else None,
+                        "opponent_2_id": pair[1].id if pair[1] is not None else None,
+                        "winner": None
+                    } for pair in pairs
+                ]
+            ]
+        }
+
+        # Resolve byes
+        for match in data["rounds"][0]:
+            if match["opponent_2_id"] is None:
+                match["winner"] = match["opponent_1_id"]
+
+        file_name = tournament.name.replace(" ", "_") + ".json"
+        try:
+            with open(from_root("tournament_data", file_name), "x") as f:
+                json.dump(data, f, indent=4)
+        except FileExistsError:
+            pass

src/ezgg_lan_manager/types/Match.py

@@ -49,6 +49,14 @@ class Match:
             games.append(Game(game_id, self._match_id, game_number, None, None, False))
         return tuple(games)
 
+    @property
+    def round_number(self) -> int:
+        return self._round_number
+
+    @property
+    def best_of(self) -> int:
+        return self._best_of
+
     @property
     def status(self) -> MatchStatus:
         if self._status == MatchStatus.COMPLETED:

src/ezgg_lan_manager/types/SessionStorage.py

@@ -1,36 +0,0 @@
-import logging
-from collections.abc import Callable
-from dataclasses import dataclass, field
-from typing import Optional
-
-logger = logging.getLogger(__name__.split(".")[-1])
-
-
-# ToDo: Persist between reloads: https://rio.dev/docs/howto/persistent-settings
-# Note for ToDo: rio.UserSettings are saved LOCALLY, do not just read a user_id here!
-@dataclass(frozen=False)
-class SessionStorage:
-    _user_id: Optional[int] = None  # DEBUG: Put user ID here to skip login
-    _is_team_member: bool = False
-    _notification_callbacks: dict[str, Callable] = field(default_factory=dict)
-
-    async def clear(self) -> None:
-        await self.set_user_id_and_team_member_flag(None, False)
-
-    def subscribe_to_logged_in_or_out_event(self, component_id: str, callback: Callable) -> None:
-        self._notification_callbacks[component_id] = callback
-
-    @property
-    def user_id(self) -> Optional[int]:
-        return self._user_id
-
-    @property
-    def is_team_member(self) -> bool:
-        return self._is_team_member
-
-    async def set_user_id_and_team_member_flag(self, user_id: Optional[int], is_team_member: bool) -> None:
-        self._user_id = user_id
-        self._is_team_member = is_team_member
-        for component_id, callback in self._notification_callbacks.items():
-            logger.debug(f"Calling logged in callback from {component_id}")
-            await callback()

src/ezgg_lan_manager/types/Tournament.py

@@ -1,3 +1,4 @@
+import logging
 import uuid
 from datetime import datetime
 from typing import Optional
@@ -7,6 +8,7 @@ from src.ezgg_lan_manager.types.Match import Match, FFAMatch
 from src.ezgg_lan_manager.types.Participant import Participant
 from src.ezgg_lan_manager.types.TournamentBase import GameTitle, TournamentFormat, TournamentStatus, TournamentError, Bracket, MatchStatus, ParticipantType
 
+logger = logging.getLogger(__name__.split(".")[-1])
 
 class Tournament:
     def __init__(self,
@@ -353,6 +355,7 @@ class Tournament:
             raise TournamentError(f"Unknown bracket type: {bracket_type}")
 
         self._status = TournamentStatus.ONGOING
+        logger.info(f"New tournament status for {self._name}: {self._status}")
         for match in self._matches:
             match.check_completion()
 

src/ezgg_lan_manager/types/UserSession.py

@@ -0,0 +1,9 @@
+from uuid import UUID
+
+from rio import Dataclass
+
+
+class UserSession(Dataclass):
+    id: UUID
+    user_id: int
+    is_team_member: bool

tournament_data/.gitignore

@@ -0,0 +1 @@
+*.json

tournament_data/README.md

@@ -0,0 +1,43 @@
+# Tournament data
+
+This directory contains JSON files for tournament trees.
+
+This is a temporary solution until the automatic tournament tree generation is completed.
+
+# Structure
+
+## Naming
+
+Tournament name with `_` as separators and `.json` suffix.
+
+## JSON structure
+
+```json
+{
+  "rounds": [
+    [
+      {
+        "opponent_1_id": 1,
+        "opponent_2_id": 2,
+        "winner": 1
+      },
+      {
+        "opponent_1_id": 3,
+        "opponent_2_id": 4,
+        "winner": null
+      }
+    ],
+    [
+      {
+        "opponent_1_id": 1,
+        "opponent_2_id": null,
+        "winner": null
+      }
+    ]
+  ]
+}
+```
+
+## ToDo
+
+- Make start button in UI generate initial `.json` file for started tournament