lib/l10n/arb/app_de.arb

@@ -22,11 +22,15 @@
   "days_ago": "vor {count} Tagen",
   "delete": "Löschen",
   "delete_all_data": "Alle Daten löschen",
+  "delete_group": "Diese Gruppe löschen",
+  "edit_group": "Gruppe bearbeiten",
   "delete_group": "Gruppe löschen",
   "delete_match": "Spiel löschen",
   "edit_group": "Gruppe bearbeiten",
   "enter_results": "Ergebnisse eintragen",
   "error_creating_group": "Fehler beim Erstellen der Gruppe, bitte erneut versuchen",
+  "error_deleting_group": "Fehler beim Löschen der Gruppe, bitte erneut versuchen",
+  "error_editing_group": "Fehler beim Bearbeiten der Gruppe, bitte erneut versuchen",
   "error_reading_file": "Fehler beim Lesen der Datei",
   "export_canceled": "Export abgebrochen",
   "export_data": "Daten exportieren",

lib/l10n/arb/app_en.arb

@@ -37,10 +37,10 @@
     "description": "Button text to create a match"
   },
   "@create_new_group": {
-    "description": "Button text to create a new group"
+    "description": "Appbar text to create a new group"
   },
   "@create_new_match": {
-    "description": "Button text to create a new match"
+    "description": "Appbar text to create a new match"
   },
   "@created_on": {
     "description": "Label for creation date"
@@ -72,13 +72,13 @@
     "description": "Confirmation dialog for deleting all data"
   },
   "@delete_group": {
-    "description": "Button text to delete a group"
+    "description": "Confirmation dialog for deleting a group"
   },
   "@delete_match": {
     "description": "Button text to delete a match"
   },
   "@edit_group": {
-    "description": "Button text to edit a group"
+      "description": "Button & Appbar label for editing a group"
   },
   "@enter_results": {
     "description": "Button text to enter match results"
@@ -86,6 +86,12 @@
   "@error_creating_group": {
     "description": "Error message when group creation fails"
   },
+  "@error_deleting_group": {
+      "description": "Error message when group deletion fails"
+  },
+  "@error_editing_group": {
+      "description": "Error message when group editing fails"
+  },
   "@error_reading_file": {
     "description": "Error message when file cannot be read"
   },
@@ -343,6 +349,8 @@
   "edit_group": "Edit Group",
   "enter_results": "Enter Results",
   "error_creating_group": "Error while creating group, please try again",
+  "error_deleting_group": "Error while deleting group, please try again",
+  "error_editing_group": "Error while editing group, please try again",
   "error_reading_file": "Error reading file",
   "export_canceled": "Export canceled",
   "export_data": "Export data",

lib/l10n/generated/app_localizations.dart

@@ -170,7 +170,7 @@ abstract class AppLocalizations {
   /// **'Create match'**
   String get create_match;
 
-  /// Button text to create a new group
+  /// Appbar text to create a new group
   ///
   /// In en, this message translates to:
   /// **'Create new group'**
@@ -182,7 +182,7 @@ abstract class AppLocalizations {
   /// **'Created on'**
   String get created_on;
 
-  /// Button text to create a new match
+  /// Appbar text to create a new match
   ///
   /// In en, this message translates to:
   /// **'Create new match'**
@@ -230,7 +230,7 @@ abstract class AppLocalizations {
   /// **'Delete all data'**
   String get delete_all_data;
 
-  /// Button text to delete a group
+  /// Confirmation dialog for deleting a group
   ///
   /// In en, this message translates to:
   /// **'Delete Group'**
@@ -242,7 +242,7 @@ abstract class AppLocalizations {
   /// **'Delete Match'**
   String get delete_match;
 
-  /// Button text to edit a group
+  /// Button & Appbar label for editing a group
   ///
   /// In en, this message translates to:
   /// **'Edit Group'**
@@ -260,6 +260,18 @@ abstract class AppLocalizations {
   /// **'Error while creating group, please try again'**
   String get error_creating_group;
 
+  /// Error message when group deletion fails
+  ///
+  /// In en, this message translates to:
+  /// **'Error while deleting group, please try again'**
+  String get error_deleting_group;
+
+  /// Error message when group editing fails
+  ///
+  /// In en, this message translates to:
+  /// **'Error while editing group, please try again'**
+  String get error_editing_group;
+
   /// Error message when file cannot be read
   ///
   /// In en, this message translates to:

lib/l10n/generated/app_localizations_de.dart

@@ -94,6 +94,14 @@ class AppLocalizationsDe extends AppLocalizations {
   String get error_creating_group =>
       'Fehler beim Erstellen der Gruppe, bitte erneut versuchen';
 
+  @override
+  String get error_deleting_group =>
+      'Fehler beim Löschen der Gruppe, bitte erneut versuchen';
+
+  @override
+  String get error_editing_group =>
+      'Fehler beim Bearbeiten der Gruppe, bitte erneut versuchen';
+
   @override
   String get error_reading_file => 'Fehler beim Lesen der Datei';
 

lib/l10n/generated/app_localizations_en.dart

@@ -94,6 +94,14 @@ class AppLocalizationsEn extends AppLocalizations {
   String get error_creating_group =>
       'Error while creating group, please try again';
 
+  @override
+  String get error_deleting_group =>
+      'Error while deleting group, please try again';
+
+  @override
+  String get error_editing_group =>
+      'Error while editing group, please try again';
+
   @override
   String get error_reading_file => 'Error reading file';
 

lib/presentation/views/main_menu/custom_navigation_bar.dart

@@ -4,7 +4,7 @@ import 'package:flutter/material.dart';
 import 'package:game_tracker/core/adaptive_page_route.dart';
 import 'package:game_tracker/core/custom_theme.dart';
 import 'package:game_tracker/l10n/generated/app_localizations.dart';
-import 'package:game_tracker/presentation/views/main_menu/group_view/groups_view.dart';
+import 'package:game_tracker/presentation/views/main_menu/group_view/group_view.dart';
 import 'package:game_tracker/presentation/views/main_menu/home_view.dart';
 import 'package:game_tracker/presentation/views/main_menu/match_view/match_view.dart';
 import 'package:game_tracker/presentation/views/main_menu/settings_view/settings_view.dart';

lib/presentation/views/main_menu/group_view/create_group_view.dart

@@ -1,5 +1,4 @@
 import 'package:flutter/material.dart';
-import 'package:game_tracker/core/constants.dart';
 import 'package:game_tracker/core/custom_theme.dart';
 import 'package:game_tracker/core/enums.dart';
 import 'package:game_tracker/data/db/database.dart';
@@ -12,8 +11,10 @@ import 'package:game_tracker/presentation/widgets/text_input/text_input_field.da
 import 'package:provider/provider.dart';
 
 class CreateGroupView extends StatefulWidget {
-  /// A view that allows the user to create a new group
+  const CreateGroupView({super.key, this.groupToEdit});
-  const CreateGroupView({super.key});
+
+  /// The group to edit, if any
+  final Group? groupToEdit;
 
   @override
   State<CreateGroupView> createState() => _CreateGroupViewState();
@@ -22,16 +23,29 @@ class CreateGroupView extends StatefulWidget {
 class _CreateGroupViewState extends State<CreateGroupView> {
   late final AppDatabase db;
 
+  /// GlobalKey for ScaffoldMessenger to show snackbars
+  final _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();
+
   /// Controller for the group name input field
   final _groupNameController = TextEditingController();
 
   /// List of currently selected players
   List<Player> selectedPlayers = [];
 
+  /// List of initially selected players (when editing a group)
+  List<Player> initialSelectedPlayers = [];
+
   @override
   void initState() {
     super.initState();
     db = Provider.of<AppDatabase>(context, listen: false);
+    if(widget.groupToEdit != null) {
+      _groupNameController.text = widget.groupToEdit!.name;
+      setState(() {
+        initialSelectedPlayers = widget.groupToEdit!.members;
+        selectedPlayers = widget.groupToEdit!.members;
+      });
+    }
     _groupNameController.addListener(() {
       setState(() {});
     });
@@ -47,9 +61,42 @@ class _CreateGroupViewState extends State<CreateGroupView> {
   Widget build(BuildContext context) {
     final loc = AppLocalizations.of(context);
     return ScaffoldMessenger(
+      key: _scaffoldMessengerKey,
       child: Scaffold(
+        resizeToAvoidBottomInset: false,
         backgroundColor: CustomTheme.backgroundColor,
-        appBar: AppBar(title: Text(loc.create_new_group)),
+        appBar: AppBar(title: Text(widget.groupToEdit == null ? loc.create_new_group : loc.edit_group), actions: widget.groupToEdit == null ? [] : [IconButton(icon: const Icon(Icons.delete), onPressed: () async {
+          if(widget.groupToEdit != null) {
+            showDialog<bool>(
+              context: context,
+              builder: (context) => AlertDialog(
+                title: Text(loc.delete_group),
+                content: Text(loc.this_cannot_be_undone),
+                actions: [
+                  TextButton(
+                    onPressed: () => Navigator.of(context).pop(false),
+                    child: Text(loc.cancel),
+                  ),
+                  TextButton(
+                    onPressed: () => Navigator.of(context).pop(true),
+                    child: Text(loc.delete),
+                  ),
+                ],
+              ),
+            ).then((confirmed) async {
+              if (confirmed == true && context.mounted) {
+                bool success = await db.groupDao.deleteGroup(groupId: widget.groupToEdit!.id);
+                if (!context.mounted) return;
+                if (success) {
+                  Navigator.pop(context);
+                } else {
+                  if (!mounted) return;
+                  showSnackbar(message: loc.error_deleting_group);
+                }
+              }
+            });
+          }
+        },)],),
         body: SafeArea(
           child: Column(
             mainAxisAlignment: MainAxisAlignment.start,
@@ -59,11 +106,11 @@ class _CreateGroupViewState extends State<CreateGroupView> {
                 child: TextInputField(
                   controller: _groupNameController,
                   hintText: loc.group_name,
-                  maxLength: Constants.MAX_GROUP_NAME_LENGTH,
                 ),
               ),
               Expanded(
                 child: PlayerSelection(
+                  initialSelectedPlayers: initialSelectedPlayers,
                   onChanged: (value) {
                     setState(() {
                       selectedPlayers = [...value];
@@ -72,7 +119,7 @@ class _CreateGroupViewState extends State<CreateGroupView> {
                 ),
               ),
               CustomWidthButton(
-                text: loc.create_group,
+                text: widget.groupToEdit == null ? loc.create_group : loc.edit_group,
                 sizeRelativeToWidth: 0.95,
                 buttonType: ButtonType.primary,
                 onPressed:
@@ -80,29 +127,34 @@ class _CreateGroupViewState extends State<CreateGroupView> {
                         (selectedPlayers.length < 2))
                     ? null
                     : () async {
-                        bool success = await db.groupDao.addGroup(
+                        late Group? updatedGroup;
+                        late bool success;
+                        if (widget.groupToEdit == null) {
+                          success = await db.groupDao.addGroup(
                             group: Group(
                               name: _groupNameController.text.trim(),
                               members: selectedPlayers,
                             ),
                           );
+                        } else {
+                          updatedGroup = Group(
+                            id: widget.groupToEdit!.id,
+                            name: _groupNameController.text.trim(),
+                            members: selectedPlayers,
+                          );
+                          //TODO: Implement group editing in database
+                          /*
+                          success = await db.groupDao.updateGroup(
+                            group: updatedGroup,
+                          );
+                          */
+                          success = true;
+                        }
                         if (!context.mounted) return;
                         if (success) {
-                          Navigator.pop(context);
+                          Navigator.pop(context, updatedGroup);
                         } else {
-                          ScaffoldMessenger.of(context).showSnackBar(
+                          showSnackbar(message: widget.groupToEdit == null ? loc.error_creating_group : loc.error_editing_group);
-                            SnackBar(
-                              backgroundColor: CustomTheme.boxColor,
-                              content: Center(
-                                child: Text(
-                                  AppLocalizations.of(
-                                    context,
-                                  ).error_creating_group,
-                                  style: const TextStyle(color: Colors.white),
-                                ),
-                              ),
-                            ),
-                          );
                         }
                       },
               ),
@@ -113,4 +165,21 @@ class _CreateGroupViewState extends State<CreateGroupView> {
       ),
     );
   }
+  /// Displays a snackbar with the given message and optional action.
+  ///
+  /// [message] The message to display in the snackbar.
+  void showSnackbar({
+    required String message,
+  }) {
+    final messenger = _scaffoldMessengerKey.currentState;
+    if (messenger != null) {
+      messenger.hideCurrentSnackBar();
+      messenger.showSnackBar(
+        SnackBar(
+          content: Text(message, style: const TextStyle(color: Colors.white)),
+          backgroundColor: CustomTheme.boxColor,
+        ),
+      );
+    }
+  }
 }

lib/presentation/views/main_menu/group_view/group_detail_view.dart

@@ -1,10 +1,12 @@
 import 'package:flutter/material.dart';
+import 'package:game_tracker/core/adaptive_page_route.dart';
 import 'package:game_tracker/core/custom_theme.dart';
 import 'package:game_tracker/data/db/database.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/match.dart';
 import 'package:game_tracker/data/dto/player.dart';
 import 'package:game_tracker/l10n/generated/app_localizations.dart';
+import 'package:game_tracker/presentation/views/main_menu/group_view/create_group_view.dart';
 import 'package:game_tracker/presentation/widgets/app_skeleton.dart';
 import 'package:game_tracker/presentation/widgets/buttons/animated_dialog_button.dart';
 import 'package:game_tracker/presentation/widgets/buttons/main_menu_button.dart';
@@ -15,10 +17,10 @@ import 'package:game_tracker/presentation/widgets/tiles/text_icon_tile.dart';
 import 'package:intl/intl.dart';
 import 'package:provider/provider.dart';
 
-class GroupProfileView extends StatefulWidget {
+class GroupDetailView extends StatefulWidget {
   /// A view that displays the profile of a group
   /// - [group]: The group to display
-  const GroupProfileView({
+  const GroupDetailView({
     super.key,
     required this.group,
     required this.callback,
@@ -30,12 +32,13 @@ class GroupProfileView extends StatefulWidget {
   final VoidCallback callback;
 
   @override
-  State<GroupProfileView> createState() => _GroupProfileViewState();
+  State<GroupDetailView> createState() => _GroupDetailViewState();
 }
 
-class _GroupProfileViewState extends State<GroupProfileView> {
+class _GroupDetailViewState extends State<GroupDetailView> {
   late final AppDatabase db;
   bool isLoading = true;
+  late Group _group;
 
   /// Total matches played in this group
   int totalMatches = 0;
@@ -46,6 +49,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
   @override
   void initState() {
     super.initState();
+    _group = widget.group;
     db = Provider.of<AppDatabase>(context, listen: false);
     _loadStatistics();
   }
@@ -86,7 +90,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
                 ),
               ).then((confirmed) async {
                 if (confirmed! && context.mounted) {
-                  await db.groupDao.deleteGroup(groupId: widget.group.id);
+                  await db.groupDao.deleteGroup(groupId: _group.id);
                   if (!context.mounted) return;
                   Navigator.pop(context);
                   widget.callback.call();
@@ -117,7 +121,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
                 ),
                 const SizedBox(height: 10),
                 Text(
-                  widget.group.name,
+                  _group.name,
                   style: const TextStyle(
                     fontSize: 28,
                     fontWeight: FontWeight.bold,
@@ -127,7 +131,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
                 ),
                 const SizedBox(height: 5),
                 Text(
-                  '${loc.created_on} ${DateFormat.yMMMd(Localizations.localeOf(context).toString()).format(widget.group.createdAt)}',
+                  '${loc.created_on} ${DateFormat.yMMMd(Localizations.localeOf(context).toString()).format(_group.createdAt)}',
                   style: const TextStyle(
                     fontSize: 12,
                     color: CustomTheme.textColor,
@@ -144,7 +148,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
                     crossAxisAlignment: WrapCrossAlignment.start,
                     spacing: 12,
                     runSpacing: 8,
-                    children: widget.group.members.map((member) {
+                    children: _group.members.map((member) {
                       return TextIconTile(
                         text: member.name,
                         iconEnabled: false,
@@ -162,7 +166,7 @@ class _GroupProfileViewState extends State<GroupProfileView> {
                       children: [
                         _buildStatRow(
                           loc.members,
-                          widget.group.members.length.toString(),
+                          _group.members.length.toString(),
                         ),
                         _buildStatRow(
                           loc.played_matches,
@@ -180,19 +184,24 @@ class _GroupProfileViewState extends State<GroupProfileView> {
               child: MainMenuButton(
                 text: loc.edit_group,
                 icon: Icons.edit,
-                onPressed: () {
+                onPressed: () async {
-                  // TODO: Uncomment when GroupDetailView is implemented
+                  final updatedGroup = await Navigator.push<Group?>(
-                  /*
-                  await Navigator.push(
                     context,
                     adaptivePageRoute(
                       builder: (context) {
-
+                        return CreateGroupView(
-                        return const GroupDetailView();
+                          groupToEdit: _group,
+                        );
                       },
                     ),
-                  );*/
+                  );
-                  print('Edit Group pressed');
+                  if (updatedGroup != null && mounted) {
+                    setState(() {
+                      _group = updatedGroup;
+                    });
+                    _loadStatistics();
+                    widget.callback();
+                  }
                 },
               ),
             ),
@@ -234,9 +243,8 @@ class _GroupProfileViewState extends State<GroupProfileView> {
   /// Loads statistics for this group
   Future<void> _loadStatistics() async {
     final matches = await db.matchDao.getAllMatches();
-    final groupMatches = matches
+    final groupMatches =
-        .where((match) => match.group?.id == widget.group.id)
+    matches.where((match) => match.group?.id == _group.id).toList();
-        .toList();
 
     setState(() {
       totalMatches = groupMatches.length;

lib/presentation/views/main_menu/group_view/group_view.dart

@@ -6,8 +6,8 @@ import 'package:game_tracker/data/db/database.dart';
 import 'package:game_tracker/data/dto/group.dart';
 import 'package:game_tracker/data/dto/player.dart';
 import 'package:game_tracker/l10n/generated/app_localizations.dart';
+import 'package:game_tracker/presentation/views/main_menu/group_view/group_detail_view.dart';
 import 'package:game_tracker/presentation/views/main_menu/group_view/create_group_view.dart';
-import 'package:game_tracker/presentation/views/main_menu/group_view/group_profile_view.dart';
 import 'package:game_tracker/presentation/widgets/app_skeleton.dart';
 import 'package:game_tracker/presentation/widgets/buttons/main_menu_button.dart';
 import 'package:game_tracker/presentation/widgets/tiles/group_tile.dart';
@@ -82,7 +82,7 @@ class _GroupsViewState extends State<GroupsView> {
                         context,
                         adaptivePageRoute(
                           builder: (context) {
-                            return GroupProfileView(
+                            return GroupDetailView(
                               group: groups[index],
                               callback: loadGroups,
                             );

lib/presentation/views/main_menu/match_view/create_match/choose_game_view.dart

@@ -43,6 +43,7 @@ class _ChooseGameViewState extends State<ChooseGameView> {
     final loc = AppLocalizations.of(context);
     return Scaffold(
       backgroundColor: CustomTheme.backgroundColor,
+      resizeToAvoidBottomInset: false,
       appBar: AppBar(
         leading: IconButton(
           icon: const Icon(Icons.arrow_back_ios),

lib/presentation/views/main_menu/match_view/create_match/choose_group_view.dart

@@ -43,6 +43,7 @@ class _ChooseGroupViewState extends State<ChooseGroupView> {
     final loc = AppLocalizations.of(context);
     return Scaffold(
       backgroundColor: CustomTheme.backgroundColor,
+      resizeToAvoidBottomInset: false,
       appBar: AppBar(
         leading: IconButton(
           icon: const Icon(Icons.arrow_back_ios),

lib/presentation/views/main_menu/match_view/create_match/create_match_view.dart

@@ -67,6 +67,9 @@ class _CreateMatchViewState extends State<CreateMatchView> {
   /// The currently selected players
   List<Player>? selectedPlayers;
 
+  /// GlobalKey for ScaffoldMessenger to show snackbars
+  final _scaffoldMessengerKey = GlobalKey<ScaffoldMessengerState>();
+
   @override
   void initState() {
     super.initState();
@@ -128,7 +131,9 @@ class _CreateMatchViewState extends State<CreateMatchView> {
         : loc.create_match;
 
     return ScaffoldMessenger(
+      key: _scaffoldMessengerKey,
       child: Scaffold(
+        resizeToAvoidBottomInset: false,
         backgroundColor: CustomTheme.backgroundColor,
         appBar: AppBar(title: Text(loc.create_new_match)),
         body: SafeArea(

lib/presentation/views/main_menu/settings_view/settings_view.dart

@@ -31,6 +31,7 @@ class _SettingsViewState extends State<SettingsView> {
     version: 'n.A.',
     buildNumber: 'n.A.',
   );
+
   @override
   void initState() {
     super.initState();

lib/presentation/widgets/player_selection.dart

@@ -70,6 +70,7 @@ class _PlayerSelectionState extends State<PlayerSelection> {
     super.initState();
     db = Provider.of<AppDatabase>(context, listen: false);
     suggestedPlayers = skeletonData;
+    selectedPlayers = widget.initialSelectedPlayers ?? [];
     loadPlayerList();
   }
 
@@ -99,7 +100,7 @@ class _PlayerSelectionState extends State<PlayerSelection> {
                 if (value.isEmpty) {
                   // If the search is empty, it shows all unselected players.
                   suggestedPlayers = allPlayers.where((player) {
-                    return !selectedPlayers.contains(player);
+                    return !selectedPlayers.any((p) => p.id == player.id);
                   }).toList();
                 } else {
                   // If there is input, it filters by name match (case-insensitive) and ensures
@@ -108,9 +109,7 @@ class _PlayerSelectionState extends State<PlayerSelection> {
                     final bool nameMatches = player.name.toLowerCase().contains(
                       value.toLowerCase(),
                     );
-                    final bool isNotSelected = !selectedPlayers.contains(
+                    final bool isNotSelected = !selectedPlayers.any((p) => p.id == player.id);
-                      player,
-                    );
                     return nameMatches && isNotSelected;
                   }).toList();
                 }
@@ -125,6 +124,8 @@ class _PlayerSelectionState extends State<PlayerSelection> {
           const SizedBox(height: 10),
           SizedBox(
             height: 50,
+            child: AppSkeleton(
+              enabled: isLoading,
               child: selectedPlayers.isEmpty
                   ? Center(child: Text(loc.no_players_selected))
                   : SingleChildScrollView(
@@ -166,6 +167,7 @@ class _PlayerSelectionState extends State<PlayerSelection> {
                       ),
                     ),
             ),
+          ),
           const SizedBox(height: 10),
           Text(
             loc.all_players,
@@ -244,8 +246,22 @@ class _PlayerSelectionState extends State<PlayerSelection> {
             // Otherwise, use the loaded players from the database.
             loadedPlayers.sort((a, b) => a.name.compareTo(b.name));
             allPlayers = [...loadedPlayers];
+            if (widget.initialSelectedPlayers != null) {
+              // Excludes already selected players from the suggested players list.
+              suggestedPlayers = loadedPlayers.where((p) => !widget.initialSelectedPlayers!.any((ip) => ip.id == p.id)).toList();
+              // Ensures that only players available for selection are pre-selected.
+              selectedPlayers = widget.initialSelectedPlayers!
+                  .where(
+                    (p) => allPlayers.any(
+                      (available) => available.id == p.id,
+                ),
+              )
+                  .toList();
+            } else {
+              // If no initial selection, all loaded players are suggested.
               suggestedPlayers = [...loadedPlayers];
             }
+          }
           isLoading = false;
         });
       });