feat(state): BoosterInventoryNotifier

2026-06-18 12:14:34 +09:00
parent c185bd0886
commit 638a177fbb
3 changed files with 67 additions and 0 deletions
@@ -0,0 +1,28 @@
+// lib/state/booster_inventory_notifier.dart
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../data/save_repository.dart';
+import '../game/models/booster.dart';
+import 'providers.dart';
+
+/// Live booster counts backed by [SaveRepository]. State is an immutable map.
+class BoosterInventoryNotifier extends Notifier<Map<BoosterType, int>> {
+  SaveRepository get _save => ref.read(saveRepositoryProvider);
+
+  @override
+  Map<BoosterType, int> build() => _snapshot();
+
+  Map<BoosterType, int> _snapshot() =>
+      {for (final t in BoosterType.values) t: _save.boosterCount(t)};
+
+  Future<void> grant(BoosterType type, [int n = 1]) async {
+    await _save.grantBooster(type, n);
+    state = _snapshot();
+  }
+
+  Future<bool> consume(BoosterType type) async {
+    final ok = await _save.consumeBooster(type);
+    if (ok) state = _snapshot();
+    return ok;
+  }
+}