README.md

@@ -8,13 +8,16 @@ This repository contains the code for the EZGG LAN Manager.
 
 ### Prerequisites
 
-- Working Installation of MySQL 5 or latest MariaDB Server (`mariadb-server` for Debian-based Linux, `XAMPP` for Windows)
+- Working Installation of MariaDB Server (version `10.6.25` or later)
+  + MySQL should work too, but there are no guarantees.
 - Python 3.9 or higher
 - PyCharm or similar IDE (optional)
 
 ### Step 1: Preparing Database
 
-To prepare the database, apply the SQL file located in `sql/create_database.sql` to your database server. This is easily accomplished with the MYSQL Workbench, but it can be also done by pipeing the file into the mariadb-server executable.
+To prepare the database, apply the SQL file located in `sql/create_database.sql` to your database server. This is easily accomplished with the MYSQL Workbench, but it can be also done by piping the file into the mariadb-server executable.
+
+After creating the database, apply all patches found in `sql/*_patch.sql` in their numeric order.
 
 Optionally, you can now execute the script `create_demo_database_content.py`, found in `src/ezgg_lan_manager/helpers`. Be aware that it can be buggy sometimes, especially if you overwrite existing data.
 
@@ -43,3 +46,4 @@ FLUSH PRIVILEGES;
 ```
 3. Make sure to **NOT** use the default passwords!
 4. Apply the `create_database.sql` when starting the MariaDB container for the first time.
+5. Apply the patches (`sql/*_patch.sql`) when starting the MariaDB container for the first time.

VERSION

@@ -1 +1 @@
-0.2.0
+0.3.2

sql/02-teams_patch.sql

@@ -0,0 +1,63 @@
+-- =====================================================
+-- Teams
+-- =====================================================
+
+DROP TABLE IF EXISTS `team_members`;
+DROP TABLE IF EXISTS `teams`;
+
+
+-- -----------------------------------------------------
+-- Teams table
+-- -----------------------------------------------------
+CREATE TABLE `teams` (
+    id              INT AUTO_INCREMENT PRIMARY KEY,
+    name            VARCHAR(100) NOT NULL,
+    abbreviation    VARCHAR(10) NOT NULL,
+    join_password   VARCHAR(255) NOT NULL,
+    created_at      DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    UNIQUE KEY uq_team_name (name),
+    UNIQUE KEY uq_team_abbr (abbreviation)
+
+) ENGINE=InnoDB
+  DEFAULT CHARSET=utf8mb4
+  COLLATE=utf8mb4_unicode_ci;
+
+
+-- -----------------------------------------------------
+-- Team Members (Junction Table)
+-- -----------------------------------------------------
+CREATE TABLE `team_members` (
+    team_id     INT NOT NULL,
+    user_id     INT NOT NULL,
+
+    status      ENUM('MEMBER','OFFICER','LEADER')
+                    NOT NULL DEFAULT 'MEMBER',
+
+    joined_at   DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    PRIMARY KEY (team_id, user_id),
+
+    CONSTRAINT fk_tm_team
+        FOREIGN KEY (team_id)
+        REFERENCES teams(id)
+        ON DELETE CASCADE,
+
+    CONSTRAINT fk_tm_user
+        FOREIGN KEY (user_id)
+        REFERENCES users(user_id)
+        ON DELETE CASCADE
+
+) ENGINE=InnoDB
+  DEFAULT CHARSET=utf8mb4
+  COLLATE=utf8mb4_unicode_ci;
+
+
+-- -----------------------------------------------------
+-- Indexes
+-- -----------------------------------------------------
+CREATE INDEX idx_tm_user
+    ON team_members(user_id);
+
+CREATE INDEX idx_tm_team_status
+    ON team_members(team_id, status);

src/EzggLanManager.py

@@ -157,6 +157,12 @@ if __name__ == "__main__":
                 build=pages.ManageTournamentsPage,
                 guard=team_guard
             ),
+            ComponentPage(
+                name="AdminNavigationPage",
+                url_segment="admin",
+                build=pages.AdminNavigationPage,
+                guard=team_guard
+            ),
             ComponentPage(
                 name="DbErrorPage",
                 url_segment="db-error",
@@ -171,6 +177,16 @@ if __name__ == "__main__":
                 name="TournamentRulesPage",
                 url_segment="tournament-rules",
                 build=pages.TournamentRulesPage,
+            ),
+            ComponentPage(
+                name="Teams",
+                url_segment="teams",
+                build=pages.TeamsPage,
+            ),
+            ComponentPage(
+                name="ConwaysGameOfLife",
+                url_segment="conway",
+                build=pages.ConwayPage,
             )
         ],
         theme=theme,

src/ezgg_lan_manager/__init__.py

@@ -12,13 +12,14 @@ from src.ezgg_lan_manager.services.MailingService import MailingService
 from src.ezgg_lan_manager.services.NewsService import NewsService
 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
 from src.ezgg_lan_manager.services.TicketingService import TicketingService
 from src.ezgg_lan_manager.services.TournamentService import TournamentService
 from src.ezgg_lan_manager.services.UserService import UserService
 from src.ezgg_lan_manager.types import *
 
 # Inits services in the correct order
-def init_services() -> tuple[AccountingService, CateringService, ConfigurationService, DatabaseService, MailingService, NewsService, SeatingService, TicketingService, UserService, LocalDataService, ReceiptPrintingService, TournamentService]:
+def init_services() -> tuple[AccountingService, CateringService, ConfigurationService, DatabaseService, MailingService, NewsService, SeatingService, TicketingService, UserService, LocalDataService, ReceiptPrintingService, TournamentService, TeamService]:
     logging.basicConfig(level=logging.DEBUG)
     configuration_service = ConfigurationService(from_root("config.toml"))
     db_service = DatabaseService(configuration_service.get_database_configuration())
@@ -32,6 +33,7 @@ def init_services() -> tuple[AccountingService, CateringService, ConfigurationSe
     catering_service = CateringService(db_service, accounting_service, user_service, receipt_printing_service)
     local_data_service = LocalDataService()
     tournament_service = TournamentService(db_service, user_service)
+    team_service = TeamService(db_service)
 
 
-    return accounting_service, catering_service, configuration_service, db_service, mailing_service, news_service, seating_service, ticketing_service, user_service, local_data_service, receipt_printing_service, tournament_service
+    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/AdminNavigationCard.py

@@ -0,0 +1,36 @@
+from rio import Component, Rectangle, Text, Column, Icon, TextStyle, PointerEventListener, PointerEvent
+
+
+class AdminNavigationCard(Component):
+    icon_name: str
+    display_text: str
+    target_url: str
+
+    def on_press(self, _: PointerEvent) -> None:
+        if self.target_url:
+            self.session.navigate_to(self.target_url)
+
+    def build(self) -> Component:
+        return PointerEventListener(
+            Rectangle(
+                content=Column(
+                    Icon(
+                        self.icon_name,
+                        min_width=3.5,
+                        min_height=3.5,
+                        fill="background",
+                        margin=1
+                    ),
+                    Text(self.display_text, style=TextStyle(fill=self.session.theme.background_color), justify="center", margin=1, margin_top=0)
+                ),
+                cursor="pointer",
+                stroke_width=0.2,
+                stroke_color=self.session.theme.background_color,
+                hover_stroke_width=0.2,
+                hover_stroke_color=self.session.theme.hud_color,
+                min_width=10,
+                min_height=10,
+                corner_radius=0.2
+            ),
+            on_press=self.on_press
+        )

src/ezgg_lan_manager/components/DesktopNavigation.py

@@ -5,6 +5,7 @@ from rio import *
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, LocalDataService
 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
@@ -42,47 +43,35 @@ class DesktopNavigation(Component):
         lan_info = self.session[ConfigurationService].get_lan_info()
         user_info_and_login_box = UserInfoAndLoginBox()
         self.force_login_box_refresh.append(user_info_and_login_box.force_refresh)
-        user_navigation = [
+        navigation = [
             DesktopNavigationButton("News", "./news"),
-            Spacer(min_height=1),
+            Spacer(min_height=0.7),
             DesktopNavigationButton(f"Über {lan_info.name} {lan_info.iteration}", "./overview"),
             DesktopNavigationButton("Ticket kaufen", "./buy_ticket"),
             DesktopNavigationButton("Sitzplan", "./seating"),
             DesktopNavigationButton("Catering", "./catering"),
             DesktopNavigationButton("Teilnehmer", "./guests"),
+            DesktopNavigationButton("Teams", "./teams"),
             DesktopNavigationButton("Turniere", "./tournaments"),
             DesktopNavigationButton("FAQ", "./faq"),
             DesktopNavigationButton("Regeln & AGB", "./rules-gtc"),
-            Spacer(min_height=1),
+            Spacer(min_height=0.7),
             DesktopNavigationButton("Discord", "https://discord.gg/8gTjg34yyH", open_new_tab=True),
             DesktopNavigationButton("Die EZ GG e.V.", "https://ezgg-ev.de/about", open_new_tab=True),
-            DesktopNavigationButton("Kontakt", "./contact"),
-            DesktopNavigationButton("Impressum & DSGVO", "./imprint"),
-            Spacer(min_height=1)
+            Spacer(min_height=0.7)
         ]
-        team_navigation = [
-            Text("Verwaltung", align_x=0.5, margin_top=0.3, style=TextStyle(fill=Color.from_hex("F0EADE"), font_size=1.2)),
-            Text("Vorsichtig sein!", align_x=0.5, margin_top=0.3, style=TextStyle(fill=self.session.theme.danger_color, font_size=0.6)),
-            DesktopNavigationButton("News", "./manage-news", is_team_navigation=True),
-            DesktopNavigationButton("Benutzer", "./manage-users", is_team_navigation=True),
-            DesktopNavigationButton("Catering", "./manage-catering", is_team_navigation=True),
-            DesktopNavigationButton("Turniere", "./manage-tournaments", is_team_navigation=True),
-            Spacer(min_height=1),
-            Revealer(
-                header="Normale Navigation",
-                content=Column(*user_navigation),
-                header_style=TextStyle(fill=self.session.theme.primary_color, font_size=0.9)
-            )
-        ] if self.user is not None and self.user.is_team_member else []
 
-        nav_to_use = copy(team_navigation) if self.user is not None and self.user.is_team_member else copy(user_navigation)
+        if self.user is not None and self.user.is_team_member:
+            navigation.insert(0, DesktopNavigationButton("Adminbereich", "./admin", is_team_navigation=True))
 
         return Card(
             Column(
                 Text(lan_info.name, align_x=0.5, margin_top=0.3, style=TextStyle(fill=self.session.theme.hud_color, font_size=1.9)),
                 Text(f"Edition {lan_info.iteration}", align_x=0.5, style=TextStyle(fill=self.session.theme.hud_color, font_size=1.2), margin_top=0.3, margin_bottom=2),
                 user_info_and_login_box,
-                *nav_to_use,
+                *navigation,
+                Text("Unsere Sponsoren", align_x=0.5, style=TextStyle(fill=self.session.theme.hud_color, font_size=0.9), margin_bottom=0.5, margin_top=1),
+                NavigationSponsorBox(img_name="crackz", url="https://www.crackz.gg/"),
                 align_y=0
             ),
             color=self.session.theme.neutral_color,

src/ezgg_lan_manager/components/LoginBox.py

@@ -102,5 +102,5 @@ class LoginBox(Component):
             min_width=12,
             align_x=0.5,
             margin_top=0.3,
-            margin_bottom=2
+            margin_bottom=1.5
         )

src/ezgg_lan_manager/components/NavigationSponsorBox.py

@@ -0,0 +1,23 @@
+from from_root import from_root
+from rio import Component, Link, Rectangle, Image, Color
+
+
+class NavigationSponsorBox(Component):
+    img_name: str
+    url: str
+    img_suffix: str = "png"
+
+    def build(self) -> Component:
+        return Link(
+            content=Rectangle(
+                content=Image(image=from_root(f"src/ezgg_lan_manager/assets/img/{self.img_name}.{self.img_suffix}"), min_width=10, min_height=10),
+                stroke_width=0.1,
+                stroke_color=Color.TRANSPARENT,
+                hover_stroke_width=0.1,
+                hover_stroke_color=self.session.theme.secondary_color,
+                margin=0.6,
+                cursor="pointer"
+            ),
+            target_url=self.url,
+            open_in_new_tab=True
+        )

src/ezgg_lan_manager/components/TeamRevealer.py

@@ -0,0 +1,44 @@
+from functools import partial
+from typing import Callable, Optional, Literal
+
+from rio import Component, Revealer, TextStyle, Column, Row, Tooltip, Icon, Spacer, Text, Button
+
+from src.ezgg_lan_manager.types.Team import TeamStatus, Team
+from src.ezgg_lan_manager.types.User import User
+
+
+class TeamRevealer(Component):
+    user: Optional[User]
+    team: Team
+    mode: Literal["join", "leave", "display"]
+    on_button_pressed: Callable
+
+    def build(self) -> Component:
+        return Revealer(
+            header=self.team.name,
+            header_style=TextStyle(
+                fill=self.session.theme.background_color,
+                font_size=1
+            ),
+            content=Column(
+                *[Row(
+                    Tooltip(
+                        anchor=Icon("material/star" if self.team.members[member] == TeamStatus.LEADER else "material/stat_1", fill=self.session.theme.hud_color),
+                        tip="Leiter" if self.team.members[member] == TeamStatus.LEADER else "Mitglied", position="top"),
+                    Text(member.user_name, style=TextStyle(fill=self.session.theme.background_color, font_size=1), margin_left=0.5),
+                    Spacer(grow_y=False))
+                    for member in self.team.members
+                ],
+                Row(Button(
+                    content=f"{self.team.name} beitreten" if self.mode == "join" else f"{self.team.name} verlassen",
+                    shape="rectangle",
+                    style="major",
+                    color="hud",
+                    on_press=partial(self.on_button_pressed, self.team),
+                ), margin_top=1, margin_bottom=1),
+                margin_right=1,
+                margin_left=1
+            ),
+            margin_left=1,
+            margin_right=1,
+        )

src/ezgg_lan_manager/components/TeamsDialogHandler.py

@@ -0,0 +1,222 @@
+import logging
+from typing import Optional, Callable
+
+from rio import Component, Text, Spacer, Rectangle, Column, TextStyle, Row, Button, TextInput, ThemeContextSwitcher
+
+from src.ezgg_lan_manager.services.TeamService import TeamService, NotMemberError, TeamLeadRemovalError, AlreadyMemberError, NameNotAllowedError, TeamNameTooLongError, \
+    TeamAbbrInvalidError, TeamNameAlreadyTaken
+from src.ezgg_lan_manager.types.Team import Team
+from src.ezgg_lan_manager.types.User import User
+
+logger = logging.getLogger(__name__.split(".")[-1])
+
+
+class ErrorBox(Component):
+    error_message: str
+    cancel: Callable
+
+    def build(self) -> Component:
+        return Rectangle(
+            content=Column(
+                Text(self.error_message, style=TextStyle(fill=self.session.theme.background_color), margin_bottom=1.5),
+                Row(
+                    Button(
+                        content="Ok",
+                        shape="rectangle",
+                        style="major",
+                        color="hud",
+                        on_press=self.cancel,
+                    )
+                ),
+                margin=1
+            ),
+            fill=self.session.theme.primary_color
+        )
+
+
+class TeamsDialogJoinHandler(Component):
+    is_active: bool
+    cancel: Callable
+    user: Optional[User] = None
+    team: Optional[Team] = None
+    error_message: Optional[str] = None
+    password: str = ""
+
+    async def join(self) -> None:
+        if self.user is None or self.team is None:
+            return
+
+        if self.password != self.team.join_password:
+            self.error_message = "Falsches Passwort!"
+            return
+
+        try:
+            await self.session[TeamService].add_member_to_team(self.team, self.user)
+        except AlreadyMemberError:
+            self.error_message = "Du bist bereits Mitglied dieses Teams"
+        else:
+            await self.cancel_with_reset()
+
+    async def cancel_with_reset(self) -> None:
+        await self.cancel()
+        self.error_message = None
+        self.password = ""
+
+    def build(self) -> Component:
+        if not self.is_active or self.user is None or self.team is None:
+            return Spacer()
+
+        if self.error_message is not None:
+            return ErrorBox(error_message=self.error_message, cancel=self.cancel_with_reset)
+
+        return Rectangle(
+            content=Column(
+                Text(f"Team {self.team.name} beitreten", style=TextStyle(fill=self.session.theme.background_color), margin_bottom=1, justify="center"),
+                ThemeContextSwitcher(content=TextInput(text=self.bind().password, label="Beitrittspasswort", margin_bottom=1), color="secondary"),
+                Row(
+                    Button(
+                        content="Abbrechen",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.danger_color,
+                        on_press=self.cancel_with_reset,
+                    ),
+                    Button(
+                        content="Beitreten",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.success_color,
+                        on_press=self.join,
+                    ),
+                    spacing=1
+                ),
+                margin=1
+            ),
+            fill=self.session.theme.primary_color
+        )
+
+
+class TeamsDialogLeaveHandler(Component):
+    is_active: bool
+    cancel: Callable
+    user: Optional[User] = None
+    team: Optional[Team] = None
+    error_message: Optional[str] = None
+
+    async def leave(self) -> None:
+        if self.user is not None and self.team is not None:
+            try:
+                await self.session[TeamService].remove_member_from_team(self.team, self.user)
+            except NotMemberError:
+                self.error_message = "Du bist kein Mitglied in diesem Team"
+            except TeamLeadRemovalError:
+                self.error_message = "Als Teamleiter kannst du das Team nicht verlassen"
+            else:
+                await self.cancel_with_reset()
+
+    async def cancel_with_reset(self) -> None:
+        await self.cancel()
+        self.error_message = None
+
+    def build(self) -> Component:
+        if not self.is_active or self.user is None or self.team is None:
+            return Spacer()
+
+        if self.error_message is not None:
+            return ErrorBox(error_message=self.error_message, cancel=self.cancel_with_reset)
+
+        return Rectangle(
+            content=Column(
+                Text(f"Team {self.team.name} wirklich verlassen?", style=TextStyle(fill=self.session.theme.background_color), margin_bottom=1.5, justify="center"),
+                Row(
+                    Button(
+                        content="Nein",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.danger_color,
+                        on_press=self.cancel_with_reset,
+                    ),
+                    Button(
+                        content="Ja",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.success_color,
+                        on_press=self.leave,
+                    ),
+                    spacing=1
+                ),
+                margin=1
+            ),
+            fill=self.session.theme.primary_color
+        )
+
+
+class TeamsDialogCreateHandler(Component):
+    is_active: bool
+    cancel: Callable
+    user: Optional[User] = None
+    error_message: Optional[str] = None
+    team_name: str = ""
+    team_abbr: str = ""
+    team_join_password: str = ""
+
+    async def cancel_with_reset(self) -> None:
+        await self.cancel()
+        self.error_message = None
+        self.team_name, self.team_abbr, self.team_join_password = "", "", ""
+
+    async def create(self) -> None:
+        if self.user is None:
+            return
+
+        if not self.team_name or not self.team_abbr or not self.team_join_password:
+            self.error_message = "Angaben unvollständig"
+            return
+
+        try:
+            await self.session[TeamService].create_team(self.team_name, self.team_abbr, self.team_join_password, self.user)
+        except NameNotAllowedError as e:
+            self.error_message = f"Angaben ungültig. Darf kein '{e.disallowed_char}' enthalten."
+        except TeamNameTooLongError:
+            self.error_message = f"Name zu lang. Maximal {TeamService.MAX_TEAM_NAME_LENGTH} Zeichen."
+        except TeamAbbrInvalidError:
+            self.error_message = f"Name zu lang. Maximal {TeamService.MAX_TEAM_ABBR_LENGTH} Zeichen."
+        except TeamNameAlreadyTaken:
+            self.error_message = "Ein Team mit diesem Namen existiert bereits."
+        else:
+            await self.cancel_with_reset()
+
+    def build(self) -> Component:
+        if not self.is_active or self.user is None:
+            return Spacer()
+
+        if self.error_message is not None:
+            return ErrorBox(error_message=self.error_message, cancel=self.cancel_with_reset)
+
+        return Rectangle(
+            content=Column(
+                Text(f"Team gründen", style=TextStyle(fill=self.session.theme.background_color), margin_bottom=1.5, justify="center"),
+                ThemeContextSwitcher(content=TextInput(text=self.bind().team_name, label="Team Name", margin_bottom=1), color="secondary"),
+                ThemeContextSwitcher(content=TextInput(text=self.bind().team_abbr, label="Team Abkürzung", margin_bottom=1), color="secondary"),
+                ThemeContextSwitcher(content=TextInput(text=self.bind().team_join_password, label="Beitrittspasswort", margin_bottom=1), color="secondary"),
+                Row(
+                    Button(
+                        content="Abbrechen",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.danger_color,
+                        on_press=self.cancel_with_reset,
+                    ),
+                    Button(
+                        content="Gründen",
+                        shape="rectangle",
+                        style="major",
+                        color=self.session.theme.success_color,
+                        on_press=self.create,
+                    ),
+                    spacing=1
+                ),
+                margin=1
+            ),
+            fill=self.session.theme.primary_color
+        )

src/ezgg_lan_manager/components/UserInfoBox.py

@@ -117,5 +117,5 @@ class UserInfoBox(Component):
             min_width=12,
             align_x=0.5,
             margin_top=0.3,
-            margin_bottom=2
+            margin_bottom=1.5
         )

src/ezgg_lan_manager/pages/AdminNavigationPage.py

@@ -0,0 +1,44 @@
+from rio import Column, Component, event, Text, TextStyle, Row
+
+from src.ezgg_lan_manager.components.AdminNavigationCard import AdminNavigationCard
+from src.ezgg_lan_manager.components.MainViewContentBox import MainViewContentBox
+from src.ezgg_lan_manager.services.ConfigurationService import ConfigurationService
+
+
+class AdminNavigationPage(Component):
+    @event.on_populate
+    async def on_populate(self) -> None:
+        await self.session.set_title(f"{self.session[ConfigurationService].get_lan_info().name} - Admin")
+
+    def build(self) -> Component:
+        return Column(
+            MainViewContentBox(
+                Text(
+                    text="Admin",
+                    style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1.2
+                    ),
+                    margin_top=2,
+                    margin_bottom=2,
+                    align_x=0.5
+                )
+            ),
+            MainViewContentBox(
+                Column(
+                    Row(
+                        AdminNavigationCard(icon_name="material/supervised_user_circle", display_text="Nutzer", target_url="manage-users"),
+                        AdminNavigationCard(icon_name="material/fastfood", display_text="Catering", target_url="manage-catering"),
+                        spacing=1
+                    ),
+                    Row(
+                        AdminNavigationCard(icon_name="material/text_ad", display_text="News", target_url="manage-news"),
+                        AdminNavigationCard(icon_name="material/trophy", display_text="Turniere", target_url="manage-tournaments"),
+                        spacing=1
+                    ),
+                    margin=1,
+                    spacing=1
+                )
+            ),
+            align_y=0
+        )

src/ezgg_lan_manager/pages/BasePage.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from typing import *  # type: ignore
 
-from rio import Component, event, Spacer, Card, Container, Column, Row, TextStyle, Color, Text, PageView, Button
+from rio import Component, event, Spacer, Card, Container, Column, Row, TextStyle, Color, Text, PageView, Button, Link
 
 from src.ezgg_lan_manager import ConfigurationService, DatabaseService
 from src.ezgg_lan_manager.components.DesktopNavigation import DesktopNavigation
@@ -58,7 +58,15 @@ class BasePage(Component):
                         Row(
                             Spacer(grow_x=True, grow_y=False),
                             Card(
-                                content=Text(f"EZGG LAN Manager Version {self.session[ConfigurationService].APP_VERSION} © EZ GG e.V.", align_x=0.5, align_y=0.5, fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5)),
+                                content=Row(
+                                    Text(f"EZGG LAN Manager Version {self.session[ConfigurationService].APP_VERSION} © EZ GG e.V.", fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5)),
+                                    Text(f"-", fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5), margin_left=0.5, margin_right=0.5),
+                                    Link(content=Text(f"Impressum & DSGVO", fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5)), target_url="./imprint"),
+                                    Text(f"-", fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5), margin_left=0.5, margin_right=0.5),
+                                    Link(content=Text(f"Kontakt", fill=self.session.theme.primary_color, style=TextStyle(font_size=0.5)), target_url="./contact"),
+                                    align_x=0.5,
+                                    align_y=0.5
+                                ),
                                 color=self.session.theme.neutral_color,
                                 corner_radius=(0, 0, 0.5, 0.5),
                                 grow_x=False,

src/ezgg_lan_manager/pages/BuyTicketPage.py

@@ -19,14 +19,18 @@ class BuyTicketPage(Component):
     popup_message: str = ""
     is_popup_success: bool = False
     is_buying_enabled: bool = False
+    is_user_logged_in: bool = False
 
     @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)
         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)
         if self.user is None:  # No user logged in
             self.is_buying_enabled = False
+            self.is_user_logged_in = False
         else:  # User is logged in
+            self.is_user_logged_in = True
             possible_ticket = await self.session[TicketingService].get_user_ticket(self.user.user_id)
             self.user_ticket = possible_ticket
             if possible_ticket is not None:  # User already has a ticket
@@ -67,17 +71,29 @@ class BuyTicketPage(Component):
 
     def build(self) -> Component:
         ticket_infos = self.session[ConfigurationService].get_ticket_info()
-        header = Text(
-            "Tickets & Preise",
-            style=TextStyle(
-                fill=self.session.theme.background_color,
-                font_size=1.2
+        header = Column(
+            Text(
+                "Tickets & Preise",
+                style=TextStyle(
+                    fill=self.session.theme.background_color,
+                    font_size=1.2
+                ),
+                margin_top=2,
+                align_x=0.5
             ),
-            margin_top=2,
-            margin_bottom=2,
-            align_x=0.5
+            spacing=0.2
         )
 
+        if not self.is_user_logged_in:
+            header.add(Text(
+                "Du musst eingeloggt sein\num ein Ticket zu kaufen",
+                style=TextStyle(
+                    fill=self.session.theme.background_color,
+                    font_size=0.6
+                ),
+                align_x=0.5
+            ))
+
         return Column(
             MainViewContentBox(
                 Column(

src/ezgg_lan_manager/pages/ConwayPage.py

@@ -0,0 +1,83 @@
+from __future__ import annotations
+
+from copy import deepcopy
+from random import randint
+from typing import *  # type: ignore
+
+from rio import Component, event, Column, Row, Color, Rectangle
+
+
+
+class ConwayPage(Component):
+    """
+    This is an Easter egg.
+    """
+
+    active_generation: list[list] = []
+    rows: int = 36
+    cols: int = 20
+
+    @event.periodic(1)
+    async def calc_next_gen(self) -> None:
+        self.create_next_grid()
+
+    @event.on_populate
+    def prepare(self) -> None:
+        self.active_generation = self.create_initial_grid()
+
+    def create_initial_grid(self) -> list[list]:
+        grid = []
+        for row in range(self.rows):
+            grid_rows = []
+            for col in range(self.cols):
+                if randint(0, 7) == 0:
+                    grid_rows += [1]
+                else:
+                    grid_rows += [0]
+            grid += [grid_rows]
+        return grid
+
+    def create_next_grid(self) -> None:
+        next_grid = deepcopy(self.active_generation)
+
+        for row in range(self.rows):
+            for col in range(self.cols):
+                live_neighbors = self.get_live_neighbors(row, col, self.active_generation)
+
+                if live_neighbors < 2 or live_neighbors > 3:
+                    next_grid[row][col] = 0
+                elif live_neighbors == 3 and self.active_generation[row][col] == 0:
+                    next_grid[row][col] = 1
+                else:
+                    next_grid[row][col] = self.active_generation[row][col]
+
+        self.active_generation = next_grid
+
+    def get_live_neighbors(self, row: int, col: int, grid: list[list]) -> int:
+        life_sum = 0
+        for i in range(-1, 2):
+            for j in range(-1, 2):
+                if not (i == 0 and j == 0):
+                    life_sum += grid[((row + i) % self.rows)][((col + j) % self.cols)]
+        return life_sum
+
+    def grid_changing(self, next_grid: list[list]) -> bool:
+        for row in range(self.rows):
+            for col in range(self.cols):
+                if not self.active_generation[row][col] == next_grid[row][col]:
+                    return True
+        return False
+
+    def build(self) -> Component:
+        rows = []
+
+        for row in self.active_generation:
+            rectangles = []
+
+            for cell in row:
+                color = Color.WHITE if cell == 1 else Color.BLACK
+                rectangles.append(Rectangle(fill=color, transition_time=0.3))
+
+            rows.append(Row(*rectangles))
+
+        return Column(*rows)

src/ezgg_lan_manager/pages/ManageTournamentsPage.py

@@ -1,5 +1,6 @@
 import logging
 from datetime import datetime
+from functools import partial
 from typing import Optional
 
 from from_root import from_root
@@ -40,7 +41,11 @@ class ManageTournamentsPage(Component):
             return
         users = await self.session[UserService].get_all_users()
         try:
-            self.cancel_options = {next(filter(lambda u: u.user_id == p.id, users)).user_name: p for p in tournament.participants}
+            cancel_options = {next(filter(lambda u: u.user_id == p.id, users)).user_name: p for p in tournament.participants}
+            if cancel_options:
+                self.cancel_options = cancel_options
+            else:
+                self.cancel_options = {"": None}
         except StopIteration as e:
             logger.error(f"Error trying to find user for participant: {e}")
         self.tournament_id_selected_for_participant_removal = tournament_id
@@ -70,13 +75,12 @@ class ManageTournamentsPage(Component):
                     Text(tournament.name, style=TextStyle(fill=self.session.theme.background_color, font_size=0.8), justify="left", margin_right=1.5),
                     Text(f"{weekday_to_display_text(tournament.start_time.weekday())[:2]}.{tournament.start_time.strftime('%H:%M')} Uhr", style=TextStyle(fill=start_time_color, font_size=0.8), justify="left", margin_right=1),
                     Spacer(),
-                    Tooltip(anchor=IconButton("material/play_arrow", min_size=2, margin_right=0.5, on_press=lambda: self.on_start_pressed(tournament.id)), tip="Starten"),
-                    Tooltip(anchor=IconButton("material/cancel_schedule_send", min_size=2, margin_right=0.5, on_press=lambda: self.on_cancel_pressed(tournament.id)), tip="Absagen"),
-                    Tooltip(anchor=IconButton("material/person_cancel", min_size=2, on_press=lambda: self.on_remove_participant_pressed(tournament.id)), tip="Spieler entfernen"),
+                    Tooltip(anchor=IconButton("material/play_arrow", min_size=2, margin_right=0.5, on_press=partial(self.on_start_pressed, tournament.id)), tip="Starten"),
+                    Tooltip(anchor=IconButton("material/cancel_schedule_send", min_size=2, margin_right=0.5, on_press=partial(self.on_cancel_pressed, tournament.id)), tip="Absagen"),
+                    Tooltip(anchor=IconButton("material/person_cancel", min_size=2, on_press=partial(self.on_remove_participant_pressed, tournament.id)), tip="Spieler entfernen"),
                     margin=1
                 )
             )
-
         return Column(
             Popup(
                 anchor=MainViewContentBox(

src/ezgg_lan_manager/pages/ManageUsersPage.py

@@ -3,7 +3,7 @@ from dataclasses import field
 from typing import Optional
 
 from rio import Column, Component, event, TextStyle, Text, TextInput, ThemeContextSwitcher, Grid, \
-    PointerEventListener, PointerEvent, Rectangle, CursorStyle, Color, TextInputChangeEvent, Spacer, Row, Switch, \
+    PointerEventListener, PointerEvent, Rectangle, Color, TextInputChangeEvent, Spacer, Row, Switch, \
     SwitchChangeEvent, EventHandler
 
 from src.ezgg_lan_manager import ConfigurationService, UserService, AccountingService, SeatingService, MailingService
@@ -42,7 +42,7 @@ class ClickableGridContent(Component):
                     grow_x=True
                 ),
                 fill=Color.TRANSPARENT,
-                cursor=CursorStyle.POINTER
+                cursor="pointer"
             ),
             on_pointer_enter=self.on_mouse_enter,
             on_pointer_leave=self.on_mouse_leave,

src/ezgg_lan_manager/pages/OverviewPage.py

@@ -75,7 +75,7 @@ class OverviewPage(Component):
                         Row(
                             Text("Internet", fill=self.session.theme.neutral_color, margin_left=1),
                             Spacer(),
-                            Text(f"60/20 Mbit/s (down/up)", fill=self.session.theme.neutral_color, margin_right=1),
+                            Text(f"100/50 Mbit/s (down/up)", fill=self.session.theme.neutral_color, margin_right=1),
                             margin_bottom=0.3
                         ),
                         Row(
@@ -125,17 +125,5 @@ class OverviewPage(Component):
                     )
                 )
             ),
-            MainViewContentBox(
-                Column(
-                    Text("Turniere & Ablauf", font_size=2, justify="center", fill=self.session.theme.neutral_color, margin_top=0.5, margin_bottom=1),
-                    Column(
-                        Row(
-                            Text("Zum aktuellen Zeitpunkt steht noch nicht fest welche Turniere gespielt werden. Wir planen diverse Online- und Offline Turniere mit Preisen durchzuführen. Weitere Informationen gibt es, sobald sie kommen, auf der NEWS- und Turnier-Seite.", font_size=0.7,
-                                 fill=self.session.theme.neutral_color, margin_left=1, overflow="wrap"),
-                            margin_bottom=0.3
-                        )
-                    )
-                )
-            ),
             Spacer()
         )

src/ezgg_lan_manager/pages/TeamsPage.py

@@ -0,0 +1,172 @@
+from asyncio import sleep
+
+from rio import event, ProgressCircle, PointerEventListener, PointerEvent, Popup, Color
+
+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.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
+
+
+class TeamsPage(Component):
+    all_teams: Optional[list[Team]] = None
+    user: Optional[User] = None
+
+    # Dialog handling
+    popup_open: bool = False
+    join_active: bool = False
+    leave_active: bool = True
+    create_active: bool = False
+    selected_team_for_join_or_leave: Optional[Team] = None
+
+    @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)
+
+    async def on_join_button_pressed(self, team: Team) -> None:
+        if self.user is None:
+            return
+        self.selected_team_for_join_or_leave = team
+        self.join_active, self.leave_active, self.create_active = True, False, False
+        self.popup_open = True
+
+    async def on_leave_button_pressed(self, team: Team) -> None:
+        if self.user is None:
+            return
+        self.selected_team_for_join_or_leave = team
+        self.join_active, self.leave_active, self.create_active = False, True, False
+        self.popup_open = True
+
+    async def on_create_button_pressed(self, _: PointerEvent) -> None:
+        if self.user is None:
+            return
+        self.join_active, self.leave_active, self.create_active = False, False, True
+        self.popup_open = True
+
+    async def popup_action_cancelled(self) -> None:
+        self.popup_open = False
+        await sleep(0.2)  # Waits for the animation to play before resetting its contents
+        self.join_active, self.leave_active, self.create_active = False, False, False
+        self.selected_team_for_join_or_leave = None
+        self.all_teams = await self.session[TeamService].get_all_teams()
+
+    def build(self) -> Component:
+        if self.all_teams is None:
+            return Column(
+                MainViewContentBox(
+                    ProgressCircle(
+                        color="secondary",
+                        align_x=0.5,
+                        margin_top=1,
+                        margin_bottom=1
+                    )
+                ),
+                Spacer()
+            )
+
+        team_list = []
+        for team in self.all_teams:
+            team_list.append(
+                TeamRevealer(
+                    user=self.user,
+                    team=team,
+                    mode="leave" if self.user in team.members.keys() else "join",
+                    on_button_pressed=self.on_leave_button_pressed if self.user in team.members.keys() else self.on_join_button_pressed
+                )
+            )
+
+        if team_list:
+            team_list[-1].margin_bottom = 1
+
+        own_teams_content = Spacer(grow_x=False, grow_y=False)
+        if self.user is not None:
+            user_team_list = []
+            for team in self.all_teams:
+                if self.user in team.members.keys():
+                    user_team_list.append(TeamRevealer(user=self.user, team=team, mode="leave", on_button_pressed=self.on_leave_button_pressed))
+
+            if not user_team_list:
+                user_team_list.append(Text(
+                    text="Du bist noch in keinem Team.",
+                    style=TextStyle(
+                        fill=self.session.theme.background_color,
+                        font_size=1
+                    ),
+                    margin_top=1,
+                    margin_bottom=1,
+                    align_x=0.5
+                ))
+            else:
+                user_team_list[-1].margin_bottom = 1
+            own_teams_content = MainViewContentBox(
+                Column(
+                    Row(
+                        Text(
+                            text="Deine Teams",
+                            style=TextStyle(
+                                fill=self.session.theme.background_color,
+                                font_size=1.2
+                            ),
+                            grow_x=True,
+                            justify="right",
+                            margin_right=3
+                        ),
+                        Column(
+                            PointerEventListener(Rectangle(
+                                content=Text(text="Team erstellen", style=TextStyle(fill=self.session.theme.background_color, font_size=0.7), margin=0.1, selectable=False),
+                                stroke_width=0.1,
+                                stroke_color=self.session.theme.hud_color,
+                                cursor="pointer",
+                                hover_fill=self.session.theme.hud_color,
+                                transition_time=0
+                            ), on_press=self.on_create_button_pressed),
+                            Spacer(),
+                            margin_right=2
+                        ),
+                        margin_top=1,
+                        margin_bottom=1
+                    ),
+                    *user_team_list
+                )
+            )
+
+        return Popup(
+            anchor=Column(
+                own_teams_content,
+                MainViewContentBox(
+                    Column(
+                        Text(
+                            text="Alle Teams",
+                            style=TextStyle(
+                                fill=self.session.theme.background_color,
+                                font_size=1.2
+                            ),
+                            margin_top=1,
+                            margin_bottom=1,
+                            align_x=0.5
+                        ),
+                        *team_list
+                    )
+                ),
+                align_y=0,
+            ),
+            content=Column(
+                TeamsDialogJoinHandler(is_active=self.join_active, cancel=self.popup_action_cancelled, user=self.user, team=self.selected_team_for_join_or_leave),
+                TeamsDialogLeaveHandler(is_active=self.leave_active, cancel=self.popup_action_cancelled, user=self.user, team=self.selected_team_for_join_or_leave),
+                TeamsDialogCreateHandler(is_active=self.create_active, cancel=self.popup_action_cancelled, user=self.user)
+            ),
+            is_open=self.popup_open,
+            modal=False,
+            corner_radius=(0.5, 0.5, 0.5, 0.5),
+            color=Color.TRANSPARENT,
+            user_closable=False,
+            position="top"
+        )

src/ezgg_lan_manager/pages/TournamentDetailsPage.py

@@ -1,14 +1,14 @@
+from asyncio import sleep
 from typing import Optional, Union, Literal
 
 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
 
-from src.ezgg_lan_manager import ConfigurationService, TournamentService, UserService
+from src.ezgg_lan_manager import ConfigurationService, TournamentService, UserService, TicketingService
 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.Participant import Participant
 from src.ezgg_lan_manager.types.SessionStorage import SessionStorage
 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
@@ -45,6 +45,14 @@ class TournamentDetailsPage(Component):
 
         self.loading_done()
 
+    @staticmethod
+    async def artificial_delay() -> None:
+        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)
+        self.current_tournament_user_list = await self.session[TournamentService].get_users_from_participant_list(self.tournament.participants)
+
     def open_close_participant_revealer(self, _: PointerEvent) -> None:
         self.participant_revealer_open = not self.participant_revealer_open
 
@@ -53,15 +61,21 @@ class TournamentDetailsPage(Component):
         if not self.user:
             return
 
-        try:
-            await self.session[TournamentService].register_user_for_tournament(self.user.user_id, self.tournament.id)
-            self.is_success = True
-            self.message = f"Erfolgreich angemeldet!"
-        except Exception as e:
+        user_ticket = await self.session[TicketingService].get_user_ticket(self.user.user_id)
+        if user_ticket is None:
             self.is_success = False
-            self.message = f"Fehler: {e}"
+            self.message = "Turnieranmeldung nur mit Ticket"
+        else:
+            try:
+                await self.session[TournamentService].register_user_for_tournament(self.user.user_id, self.tournament.id)
+                await self.artificial_delay()
+                self.is_success = True
+                self.message = f"Erfolgreich angemeldet!"
+            except Exception as e:
+                self.is_success = False
+                self.message = f"Fehler: {e}"
+        await self.update()
         self.loading = False
-        await self.on_populate()
 
     async def unregister_pressed(self) -> None:
         self.loading = True
@@ -70,13 +84,14 @@ class TournamentDetailsPage(Component):
 
         try:
             await self.session[TournamentService].unregister_user_from_tournament(self.user.user_id, self.tournament.id)
+            await self.artificial_delay()
             self.is_success = True
             self.message = f"Erfolgreich abgemeldet!"
         except Exception as e:
             self.is_success = False
             self.message = f"Fehler: {e}"
+        await self.update()
         self.loading = False
-        await self.on_populate()
 
     async def tree_button_clicked(self) -> None:
         pass  # ToDo: Implement tournament tree view
@@ -198,7 +213,7 @@ class TournamentDetailsPage(Component):
                     content=Rectangle(
                         content=TournamentDetailsInfoRow(
                             "Teilnehmer ▴" if self.participant_revealer_open else "Teilnehmer ▾",
-                            f"{len(self.tournament.participants)} / {self.tournament.max_participants}",
+                            f"{len(self.current_tournament_user_list)} / {self.tournament.max_participants}",
                             value_color=self.session.theme.danger_color if self.tournament.is_full else self.session.theme.background_color,
                             key_color=self.session.theme.secondary_color
                         ),

src/ezgg_lan_manager/pages/__init__.py

@@ -22,3 +22,6 @@ from .ManageTournamentsPage import ManageTournamentsPage
 from .OverviewPage import OverviewPage
 from .TournamentDetailsPage import TournamentDetailsPage
 from .TournamentRulesPage import TournamentRulesPage
+from .ConwayPage import ConwayPage
+from .TeamsPage import TeamsPage
+from .AdminNavigationPage import AdminNavigationPage

src/ezgg_lan_manager/services/DatabaseService.py

@@ -14,6 +14,7 @@ from src.ezgg_lan_manager.types.ConfigurationTypes import DatabaseConfiguration
 from src.ezgg_lan_manager.types.News import News
 from src.ezgg_lan_manager.types.Participant import Participant
 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
@@ -967,3 +968,208 @@ class DatabaseService:
                     return await self.remove_participant_from_tournament(participant, tournament)
                 except Exception as e:
                     logger.warning(f"Error removing participant from tournament: {e}")
+
+    async def get_teams(self) -> list[Team]:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                query = """
+                SELECT
+                    t.id            AS team_id,
+                    t.name          AS team_name,
+                    t.abbreviation  AS team_abbr,
+                    t.join_password,
+                    t.created_at    AS team_created_at,
+                
+                    tm.status       AS team_status,
+                    tm.joined_at    AS member_joined_at,
+                
+                    u.*
+                
+                FROM teams t
+                
+                LEFT JOIN team_members tm
+                       ON t.id = tm.team_id
+                
+                LEFT JOIN users u
+                       ON tm.user_id = u.user_id
+                
+                ORDER BY
+                    t.id,
+                    CASE tm.status
+                        WHEN 'LEADER'  THEN 1
+                        WHEN 'OFFICER' THEN 2
+                        WHEN 'MEMBER'  THEN 3
+                        ELSE 4
+                    END,
+                    u.user_name;
+                """
+                try:
+                    await cursor.execute(query)
+                    await conn.commit()
+                except aiomysql.InterfaceError:
+                    pool_init_result = await self.init_db_pool()
+                    if not pool_init_result:
+                        raise NoDatabaseConnectionError
+                    return await self.get_teams()
+                except Exception as e:
+                    logger.warning(f"Error getting teams: {e}")
+                    return []
+
+                current_team: Optional[Team] = None
+                all_teams = []
+
+                for row in await cursor.fetchall():
+                    if row[5] is None:  # Teams without single member are ignored
+                        continue
+                    if current_team is None:
+                        user = self._map_db_result_to_user(row[7:])
+                        current_team = Team(id=row[0], name=row[1], abbreviation=row[2], join_password=row[3], members={user: TeamStatus.from_str(row[5])})
+                    elif current_team.id == row[0]:  # Still same team
+                        current_team.members[self._map_db_result_to_user(row[7:])] = TeamStatus.from_str(row[5])
+                    else:
+                        all_teams.append(current_team)
+                        user = self._map_db_result_to_user(row[7:])
+                        current_team = Team(id=row[0], name=row[1], abbreviation=row[2], join_password=row[3], members={user: TeamStatus.from_str(row[5])})
+
+                all_teams.append(current_team)
+
+                return all_teams
+
+    async def get_team_by_id(self, team_id: int) -> Optional[Team]:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                query = """
+                SELECT
+                    t.id            AS team_id,
+                    t.name          AS team_name,
+                    t.abbreviation  AS team_abbr,
+                    t.join_password,
+                    t.created_at    AS team_created_at,
+                
+                    tm.status       AS team_status,
+                    tm.joined_at    AS member_joined_at,
+                
+                    u.*
+                
+                FROM teams t
+                
+                LEFT JOIN team_members tm
+                       ON t.id = tm.team_id
+                
+                LEFT JOIN users u
+                       ON tm.user_id = u.user_id
+                
+                WHERE t.id = %s
+                
+                ORDER BY
+                    t.id,
+                    CASE tm.status
+                        WHEN 'LEADER'  THEN 1
+                        WHEN 'OFFICER' THEN 2
+                        WHEN 'MEMBER'  THEN 3
+                        ELSE 4
+                    END,
+                    u.user_name;
+                """
+                try:
+                    await cursor.execute(query, (team_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.get_team_by_id(team_id)
+                except Exception as e:
+                    logger.warning(f"Error getting team: {e}")
+                    return None
+
+                team: Optional[Team] = None
+
+                for row in await cursor.fetchall():
+                    if team is None:
+                        user = self._map_db_result_to_user(row[7:])
+                        team = Team(id=row[0], name=row[1], abbreviation=row[2], join_password=row[3], members={user: TeamStatus.from_str(row[5])})
+                    elif team.id == row[0]:
+                        team.members[self._map_db_result_to_user(row[7:])] = TeamStatus.from_str(row[5])
+
+                return team
+
+    async def create_team(self, team_name: str, team_abbr: str, join_password: str, leader: User) -> Team:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                try:
+                    await cursor.execute(
+                        "INSERT INTO teams (name, abbreviation, join_password) "
+                        "VALUES (%s, %s, %s)", (team_name, team_abbr, join_password)
+                    )
+                    await conn.commit()
+                    team_id = cursor.lastrowid
+                    await cursor.execute(
+                        "INSERT INTO team_members (team_id, user_id, status) VALUES (%s, %s, %s)",
+                        (team_id, leader.user_id, TeamStatus.LEADER.name)
+                    )
+                    await conn.commit()
+                    return await self.get_team_by_id(team_id)
+
+                except aiomysql.InterfaceError:
+                    pool_init_result = await self.init_db_pool()
+                    if not pool_init_result:
+                        raise NoDatabaseConnectionError
+                    return await self.create_team(team_name, team_abbr, join_password)
+                except aiomysql.IntegrityError as e:
+                    logger.warning(f"Aborted duplication entry: {e}")
+                    raise DuplicationError
+
+    async def update_team(self, team: Team) -> Team:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                try:
+                    await cursor.execute(
+                        "UPDATE teams SET name = %s, abbreviation = %s, join_password = %s WHERE (id = %s)",
+                        (team.name, team.abbreviation, team.join_password, team.id)
+                    )
+                    await conn.commit()
+                    return await self.get_team_by_id(team.id)
+                except aiomysql.InterfaceError:
+                    pool_init_result = await self.init_db_pool()
+                    if not pool_init_result:
+                        raise NoDatabaseConnectionError
+                    return await self.update_team(team)
+                except aiomysql.IntegrityError as e:
+                    logger.warning(f"Aborted duplication entry: {e}")
+                    raise DuplicationError
+
+
+    async def add_member_to_team(self, team: Team, user: User, status: TeamStatus = TeamStatus.MEMBER) -> None:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                try:
+                    await cursor.execute(
+                        "INSERT INTO team_members (team_id, user_id, status) VALUES (%s, %s, %s)",
+                        (team.id, user.user_id, status.name)
+                    )
+                    await conn.commit()
+                except aiomysql.InterfaceError:
+                    pool_init_result = await self.init_db_pool()
+                    if not pool_init_result:
+                        raise NoDatabaseConnectionError
+                    return await self.add_member_to_team(team, user, status)
+                except aiomysql.IntegrityError as e:
+                    logger.warning(f"Failed to add member {user.user_name} to team {team.name}: {e}")
+                    raise DuplicationError
+
+
+    async def remove_user_from_team(self, team: Team, user: User) -> None:
+        async with self._connection_pool.acquire() as conn:
+            async with conn.cursor(aiomysql.Cursor) as cursor:
+                try:
+                    await cursor.execute(
+                        "DELETE FROM team_members WHERE team_id = %s AND user_id = %s",
+                        (team.id, user.user_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.remove_user_from_team(team, user)

src/ezgg_lan_manager/services/MailingService.py

@@ -45,7 +45,7 @@ class MailingService:
         return f"""
         Hallo {user.user_name},
         
-        deinem Account wurden {added_balance} € hinzugefügt. Dein neues Guthaben beträgt nun {total_balance} €.
+        deinem Account wurden {added_balance:.2f} € hinzugefügt. Dein neues Guthaben beträgt nun {total_balance:.2f} €.
         
         Wenn du zu dieser Aufladung Fragen hast, stehen wir dir in unserem Discord Server oder per Mail an {self._configuration_service.get_lan_info().organizer_mail} zur Verfügung.
         

src/ezgg_lan_manager/services/TeamService.py

@@ -0,0 +1,134 @@
+from string import ascii_letters, digits
+from typing import Optional
+
+from src.ezgg_lan_manager.services.DatabaseService import DatabaseService, DuplicationError
+from src.ezgg_lan_manager.types.Team import TeamStatus, Team
+from src.ezgg_lan_manager.types.User import User
+
+
+class NameNotAllowedError(Exception):
+    def __init__(self, disallowed_char: str) -> None:
+        self.disallowed_char = disallowed_char
+
+
+class AlreadyMemberError(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class NotMemberError(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class TeamLeadRemovalError(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class TeamNameTooLongError(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class TeamNameAlreadyTaken(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class TeamAbbrInvalidError(Exception):
+    def __init__(self) -> None:
+        pass
+
+
+class TeamService:
+    ALLOWED_TEAM_NAME_SYMBOLS = ascii_letters + digits + "!#$%&*+,-./:;<=>?[]^_{|}~ "
+    MAX_TEAM_NAME_LENGTH = 24
+    MAX_TEAM_ABBR_LENGTH = 8
+
+    def __init__(self, db_service: DatabaseService) -> None:
+        self._db_service = db_service
+
+    async def get_all_teams(self) -> list[Team]:
+        return await self._db_service.get_teams()
+
+    async def get_team_by_id(self, team_id: int) -> Optional[Team]:
+        return await self._db_service.get_team_by_id(team_id)
+
+    async def get_teams_for_user_by_id(self, user_id: int) -> list[Team]:
+        all_teams = await self.get_all_teams()
+        user_teams = []
+        for team in all_teams:
+            if user_id in [u.user_id for u in team.members.keys()]:
+                user_teams.append(team)
+        return user_teams
+
+    async def create_team(self, team_name: str, team_abbr: str, join_password: str, leader: User) -> Team:
+        disallowed_char = self._check_for_disallowed_char(team_name)
+        if disallowed_char:
+            raise NameNotAllowedError(disallowed_char)
+        disallowed_char = self._check_for_disallowed_char(team_abbr)
+        if disallowed_char:
+            raise NameNotAllowedError(disallowed_char)
+
+        if not team_name or len(team_name) > self.MAX_TEAM_NAME_LENGTH:
+            raise TeamNameTooLongError()
+
+        if not team_abbr or len(team_abbr) > self.MAX_TEAM_ABBR_LENGTH:
+            raise TeamAbbrInvalidError()
+
+        try:
+            created_team = await self._db_service.create_team(team_name, team_abbr, join_password, leader)
+        except DuplicationError:
+            raise TeamNameAlreadyTaken
+        return created_team
+
+    async def update_team(self, team: Team) -> Team:
+        """
+        Updates the team EXCLUDING adding and removing members. This is to be done via add_member_to_team and remove_member_from_team
+        :param team: New instance of Team that is to be updated
+        :return: The modified Team instance
+        """
+        disallowed_char = self._check_for_disallowed_char(team.name)
+        if disallowed_char:
+            raise NameNotAllowedError(disallowed_char)
+        disallowed_char = self._check_for_disallowed_char(team.abbreviation)
+        if disallowed_char:
+            raise NameNotAllowedError(disallowed_char)
+
+        if not team.name or len(team.name) > self.MAX_TEAM_NAME_LENGTH:
+            raise TeamNameTooLongError()
+
+        if not team.abbreviation or len(team.abbreviation) > self.MAX_TEAM_ABBR_LENGTH:
+            raise TeamAbbrInvalidError()
+
+        return await self._db_service.update_team(team)
+
+    async def add_member_to_team(self, team: Team, user: User, status: TeamStatus = TeamStatus.MEMBER) -> Team:
+        if user in team.members:
+            raise AlreadyMemberError()
+
+        await self._db_service.add_member_to_team(team, user, status)
+        return await self.get_team_by_id(team.id)
+
+    async def remove_member_from_team(self, team: Team, user: User) -> Team:
+        if user not in team.members:
+            raise NotMemberError()
+
+        if team.members[user] == TeamStatus.LEADER:
+            raise TeamLeadRemovalError()
+
+        await self._db_service.remove_user_from_team(team, user)
+        return await self.get_team_by_id(team.id)
+
+    async def is_join_password_valid(self, team_id: int, join_password: str) -> bool:
+        team = await self.get_team_by_id(team_id)
+        if not team:
+            return False
+        return team.join_password == join_password
+
+    def _check_for_disallowed_char(self, name: str) -> Optional[str]:
+        for c in name:
+            if c not in self.ALLOWED_TEAM_NAME_SYMBOLS:
+                return c
+        return None

src/ezgg_lan_manager/types/Team.py

@@ -0,0 +1,29 @@
+from dataclasses import dataclass
+from enum import Enum
+from typing import Self
+
+from src.ezgg_lan_manager.types.User import User
+
+class TeamStatus(Enum):
+    MEMBER = 0
+    OFFICER = 1
+    LEADER = 2
+
+    @classmethod
+    def from_str(cls, team_status: str) -> Self:
+        if team_status == "MEMBER":
+            return TeamStatus.MEMBER
+        elif team_status == "OFFICER":
+            return TeamStatus.OFFICER
+        elif team_status == "LEADER":
+            return TeamStatus.LEADER
+        raise ValueError
+
+
+@dataclass(frozen=True)
+class Team:
+    id: int
+    name: str
+    abbreviation: str
+    members: dict[User, TeamStatus]
+    join_password: str

src/ezgg_lan_manager/types/User.py

@@ -19,4 +19,9 @@ class User:
     last_updated_at: datetime
 
     def __hash__(self) -> int:
-        return hash(f"{self.user_id}{self.user_name}{self.user_mail}")
+        return hash(self.user_id)
+
+    def __eq__(self, other):
+        if not isinstance(other, User):
+            return NotImplemented
+        return self.user_id == other.user_id