feat: Deleting games associated with matches deletes them

lib/data/dao/match_dao.dart

@@ -299,6 +299,25 @@ class MatchDao extends DatabaseAccessor<AppDatabase> with _$MatchDaoMixin {
     return count ?? 0;
   }
 
+  /// Retrieves the number of matches associated with a specific game.
+  Future<int> getMatchCountByGame({required String gameId}) async {
+    final count =
+        await (selectOnly(matchTable)
+              ..where(matchTable.gameId.equals(gameId))
+              ..addColumns([matchTable.id.count()]))
+            .map((row) => row.read(matchTable.id.count()))
+            .getSingle();
+    return count ?? 0;
+  }
+
+  /// Deletes all matches associated with a specific game.
+  /// Returns the number of matches deleted.
+  Future<int> deleteMatchesByGame({required String gameId}) async {
+    final query = delete(matchTable)..where((m) => m.gameId.equals(gameId));
+    final rowsAffected = await query.go();
+    return rowsAffected;
+  }
+
   /// Retrieves all matches associated with the given [groupId].
   /// Queries the database directly, filtering by [groupId].
   Future<List<Match>> getGroupMatches({required String groupId}) async {

lib/l10n/arb/app_de.arb

@@ -34,6 +34,14 @@
   "delete": "Löschen",
   "delete_all_data": "Alle Daten löschen",
   "delete_game": "Spielvorlage löschen",
+  "delete_game_with_matches_warning": "Wenn du diese Spielvorlage löschst, werden {count, plural, =1{1 Spiel} other{{count} Spiele}} mit dieser Spielvorlage ebenfalls gelöscht.",
+  "@delete_game_with_matches_warning": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "delete_group": "Gruppe löschen",
   "delete_match": "Spiel löschen",
   "description": "Beschreibung",

lib/l10n/arb/app_en.arb

@@ -389,6 +389,14 @@
   "delete": "Delete",
   "delete_all_data": "Delete all data",
   "delete_game": "Delete Game",
+  "delete_game_with_matches_warning": "If you delete this game template, {count, plural, =1{1 match} other{{count} matches}} using this game template will also be deleted.",
+  "@delete_game_with_matches_warning": {
+    "placeholders": {
+      "count": {
+        "type": "int"
+      }
+    }
+  },
   "delete_group": "Delete Group",
   "delete_match": "Delete Match",
   "description": "Description",

lib/l10n/generated/app_localizations.dart

@@ -302,6 +302,12 @@ abstract class AppLocalizations {
   /// **'Delete Game'**
   String get delete_game;
 
+  /// No description provided for @delete_game_with_matches_warning.
+  ///
+  /// In en, this message translates to:
+  /// **'If you delete this game template, {count, plural, =1{1 match} other{{count} matches}} using this game template will also be deleted.'**
+  String delete_game_with_matches_warning(int count);
+
   /// Confirmation dialog for deleting a group
   ///
   /// In en, this message translates to:

lib/l10n/generated/app_localizations_de.dart

@@ -114,6 +114,17 @@ class AppLocalizationsDe extends AppLocalizations {
   @override
   String get delete_game => 'Spielvorlage löschen';
 
+  @override
+  String delete_game_with_matches_warning(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count Spiele',
+      one: '1 Spiel',
+    );
+    return 'Wenn du diese Spielvorlage löschst, werden $_temp0 mit dieser Spielvorlage ebenfalls gelöscht.';
+  }
+
   @override
   String get delete_group => 'Gruppe löschen';
 

lib/l10n/generated/app_localizations_en.dart

@@ -114,6 +114,17 @@ class AppLocalizationsEn extends AppLocalizations {
   @override
   String get delete_game => 'Delete Game';
 
+  @override
+  String delete_game_with_matches_warning(int count) {
+    String _temp0 = intl.Intl.pluralLogic(
+      count,
+      locale: localeName,
+      other: '$count matches',
+      one: '1 match',
+    );
+    return 'If you delete this game template, $_temp0 using this game template will also be deleted.';
+  }
+
   @override
   String get delete_group => 'Delete Group';
 

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

@@ -159,7 +159,7 @@ class _ChooseGameViewState extends State<ChooseGameView> {
                         adaptivePageRoute(
                           builder: (context) => CreateGameView(
                             gameToEdit: game,
-                            canDelete: canDeleteGame(game),
+                            matchCount: getMatchCount(game),
                             onGameChanged: () {
                               widget.onGamesUpdated?.call();
                             },
@@ -224,11 +224,10 @@ class _ChooseGameViewState extends State<ChooseGameView> {
     gameCounts = await db.gameDao.getGameUsage();
   }
 
-  // A game can only be deleted if there are no matches using it
-  bool canDeleteGame(Game game) {
-    final count = gameCounts
+  // Returns the number of matches that use the given [game].
+  int getMatchCount(Game game) {
+    return gameCounts
         .firstWhere((gc) => gc.$1.id == game.id, orElse: () => (game, 0))
         .$2;
-    return count == 0;
   }
 }

lib/presentation/views/main_menu/match_view/create_match/create_game/create_game_view.dart

@@ -25,7 +25,7 @@ class CreateGameView extends StatefulWidget {
     super.key,
     required this.onGameChanged,
     this.gameToEdit,
-    this.canDelete = false,
+    this.matchCount = 0,
   });
 
   /// Callback to invoke when the game is created or edited
@@ -34,7 +34,7 @@ class CreateGameView extends StatefulWidget {
   /// An optional game to prefill the fields
   final Game? gameToEdit;
 
-  final bool canDelete;
+  final int matchCount;
 
   @override
   State<CreateGameView> createState() => _CreateGameViewState();
@@ -139,45 +139,59 @@ class _CreateGameViewState extends State<CreateGameView> {
             if (isEditMode())
               IconButton(
                 icon: const Icon(Icons.delete),
-                onPressed: widget.canDelete
-                    ? () async {
-                        showDialog<bool>(
-                          context: context,
-                          builder: (context) => CustomAlertDialog(
-                            title: loc.delete_game,
-                            content: Text(loc.this_cannot_be_undone),
-                            actions: [
-                              CustomDialogAction(
-                                onPressed: () =>
-                                    Navigator.of(context).pop(false),
-                                text: loc.cancel,
-                              ),
-                              CustomDialogAction(
-                                onPressed: () =>
-                                    Navigator.of(context).pop(true),
-                                text: loc.delete,
-                              ),
-                            ],
-                          ),
-                        ).then((confirmed) async {
-                          if (confirmed == true && context.mounted) {
-                            bool success = await db.gameDao.deleteGame(
-                              gameId: widget.gameToEdit!.id,
-                            );
-                            if (!context.mounted) return;
-                            if (success) {
-                              widget.onGameChanged.call();
-                              Navigator.of(
-                                context,
-                              ).pop((game: widget.gameToEdit, delete: true));
-                            } else {
-                              if (!mounted) return;
-                              showSnackbar(message: loc.error_deleting_game);
-                            }
-                          }
-                        });
+                onPressed: () async {
+                  if (!context.mounted) return;
+
+                  // Build the dialog content based on match count
+                  final String dialogContent = widget.matchCount > 0
+                      ? loc.delete_game_with_matches_warning(widget.matchCount)
+                      : loc.this_cannot_be_undone;
+
+                  showDialog<bool>(
+                    context: context,
+                    builder: (context) => CustomAlertDialog(
+                      title: loc.delete_game,
+                      content: Text(dialogContent),
+                      actions: [
+                        CustomDialogAction(
+                          isDestructive: true,
+                          onPressed: () => Navigator.of(context).pop(true),
+                          text: loc.delete,
+                        ),
+                        CustomDialogAction(
+                          onPressed: () => Navigator.of(context).pop(false),
+                          buttonType: ButtonType.secondary,
+                          text: loc.cancel,
+                        ),
+                      ],
+                    ),
+                  ).then((confirmed) async {
+                    if (confirmed == true && context.mounted) {
+                      // Delete assocaited matches
+                      if (widget.matchCount > 0) {
+                        await db.matchDao.deleteMatchesByGame(
+                          gameId: widget.gameToEdit!.id,
+                        );
                       }
-                    : null,
+
+                      // Delete the targetted game
+                      bool success = await db.gameDao.deleteGame(
+                        gameId: widget.gameToEdit!.id,
+                      );
+
+                      if (!context.mounted) return;
+                      if (success) {
+                        widget.onGameChanged.call();
+                        Navigator.of(
+                          context,
+                        ).pop((game: widget.gameToEdit, delete: true));
+                      } else {
+                        if (!mounted) return;
+                        showSnackbar(message: loc.error_deleting_game);
+                      }
+                    }
+                  });
+                },
               ),
           ],
         ),

lib/presentation/widgets/buttons/animated_dialog_button.dart

@@ -14,6 +14,7 @@ class AnimatedDialogButton extends StatefulWidget {
     required this.onPressed,
     this.buttonConstraints,
     this.buttonType = ButtonType.primary,
+    this.isDescructive = false,
   });
 
   final String buttonText;
@@ -24,6 +25,8 @@ class AnimatedDialogButton extends StatefulWidget {
 
   final ButtonType buttonType;
 
+  final bool isDescructive;
+
   @override
   State<AnimatedDialogButton> createState() => _AnimatedDialogButtonState();
 }
@@ -33,28 +36,8 @@ class _AnimatedDialogButtonState extends State<AnimatedDialogButton> {
 
   @override
   Widget build(BuildContext context) {
-    final textStyling = TextStyle(
-      color: widget.buttonType == ButtonType.primary
-          ? Colors.black
-          : Colors.white,
-      fontSize: 16,
-      fontWeight: FontWeight.bold,
-    );
-
-    final buttonDecoration = widget.buttonType == ButtonType.primary
-        // Primary
-        ? BoxDecoration(
-            color: Colors.white,
-            borderRadius: BorderRadius.circular(12),
-          )
-        : widget.buttonType == ButtonType.secondary
-        // Secondary
-        ? BoxDecoration(
-            border: BoxBorder.all(color: Colors.white, width: 2),
-            borderRadius: BorderRadius.circular(12),
-          )
-        // Tertiary
-        : const BoxDecoration();
+    final textStyling = _getTextStyling();
+    final buttonDecoration = _getButtonDecoration();
 
     return GestureDetector(
       onTapDown: (_) => setState(() => _isPressed = true),
@@ -84,4 +67,42 @@ class _AnimatedDialogButtonState extends State<AnimatedDialogButton> {
       ),
     );
   }
+
+  TextStyle _getTextStyling() {
+    late Color textColor;
+    if (widget.buttonType == ButtonType.primary) {
+      textColor = widget.isDescructive ? Colors.white : Colors.black;
+    } else if (widget.buttonType == ButtonType.secondary) {
+      textColor = widget.isDescructive ? Colors.red : Colors.white;
+    } else {
+      textColor = widget.isDescructive ? Colors.red : Colors.white;
+    }
+
+    return TextStyle(
+      color: textColor,
+      fontSize: 16,
+      fontWeight: FontWeight.bold,
+    );
+  }
+
+  BoxDecoration _getButtonDecoration() {
+    if (widget.buttonType == ButtonType.primary) {
+      // Primary
+      return BoxDecoration(
+        color: widget.isDescructive ? Colors.red : Colors.white,
+        borderRadius: BorderRadius.circular(12),
+      );
+    } else if (widget.buttonType == ButtonType.secondary) {
+      // Secondary
+      return BoxDecoration(
+        border: BoxBorder.all(
+          color: widget.isDescructive ? Colors.red : Colors.white,
+          width: 2,
+        ),
+        borderRadius: BorderRadius.circular(12),
+      );
+    }
+    // Tertiary
+    return const BoxDecoration();
+  }
 }

lib/presentation/widgets/dialog/custom_dialog_action.dart

@@ -12,6 +12,7 @@ class CustomDialogAction extends StatelessWidget {
     required this.onPressed,
     required this.text,
     this.buttonType = ButtonType.primary,
+    this.isDestructive = false,
   });
 
   final String text;
@@ -20,12 +21,15 @@ class CustomDialogAction extends StatelessWidget {
 
   final VoidCallback onPressed;
 
+  final bool isDestructive;
+
   @override
   Widget build(BuildContext context) {
     return AnimatedDialogButton(
       onPressed: onPressed,
       buttonText: text,
       buttonType: buttonType,
+      isDescructive: isDestructive,
       buttonConstraints: const BoxConstraints(minWidth: 300),
     );
   }

test/db_tests/aggregates/match_test.dart

@@ -366,5 +366,55 @@ void main() {
       expect(match.group, isNotNull);
       expect(match.group!.id, testGroup1.id);
     });
+
+    test('getMatchCountByGame() works correctly', () async {
+      var count = await database.matchDao.getMatchCountByGame(
+        gameId: testGame.id,
+      );
+      expect(count, 0);
+
+      await database.matchDao.addMatch(match: testMatch1);
+      count = await database.matchDao.getMatchCountByGame(gameId: testGame.id);
+      expect(count, 1);
+
+      await database.matchDao.addMatch(match: testMatch2);
+      count = await database.matchDao.getMatchCountByGame(gameId: testGame.id);
+      expect(count, 2);
+    });
+
+    test('getMatchCountByGame() returns 0 for non-existent game', () async {
+      final count = await database.matchDao.getMatchCountByGame(
+        gameId: 'non-existent-game-id',
+      );
+      expect(count, 0);
+    });
+
+    test('deleteMatchesByGame() deletes all matches for a game', () async {
+      await database.matchDao.addMatch(match: testMatch1);
+      await database.matchDao.addMatch(match: testMatch2);
+
+      var count = await database.matchDao.getMatchCountByGame(
+        gameId: testGame.id,
+      );
+      expect(count, 2);
+
+      final deletedCount = await database.matchDao.deleteMatchesByGame(
+        gameId: testGame.id,
+      );
+      expect(deletedCount, 2);
+
+      count = await database.matchDao.getMatchCountByGame(gameId: testGame.id);
+      expect(count, 0);
+
+      final allMatches = await database.matchDao.getAllMatches();
+      expect(allMatches, isEmpty);
+    });
+
+    test('deleteMatchesByGame() returns 0 for non-existent game', () async {
+      final deletedCount = await database.matchDao.deleteMatchesByGame(
+        gameId: 'non-existent-game-id',
+      );
+      expect(deletedCount, 0);
+    });
   });
 }