feat: riscrivi app in Flutter

Riscrittura completa da Vue 3 + Capacitor a Flutter/Dart. Architettura feature-based (lib/features/): - meal_planner: modello MealPlan/DayPlan, provider, pagina e widget - converter: modello ConversionEntry, provider con ricerca, pagina - shopping_list: modello ShoppingItem, provider con deduplicazione, pagina e widget Core: - Material 3 con seed color #2d6a4f - NavigationBar + IndexedStack (preserva stato dei tab) - Portrait lock via SystemChrome - Persistenza con shared_preferences - 50+ alimenti × metodi cottura in assets/data/conversions.json Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-16 17:41:26 +02:00
parent d49b31f21d
commit eb7912421c
20 changed files with 1656 additions and 0 deletions
@@ -0,0 +1,88 @@
+import 'dart:convert';
+import 'package:flutter/material.dart';
+import '../models/shopping_item.dart';
+import '../../../shared/services/storage_service.dart';
+import '../../../core/constants/app_constants.dart';
+
+class ShoppingListProvider extends ChangeNotifier {
+  List<ShoppingItem> _items = [];
+
+  List<ShoppingItem> get items => _items;
+  List<ShoppingItem> get pendingItems =>
+      _items.where((i) => !i.checked).toList();
+  List<ShoppingItem> get checkedItems =>
+      _items.where((i) => i.checked).toList();
+
+  Future<void> load() async {
+    final json = await StorageService.load(kStorageKeyShopping);
+    if (json != null) {
+      try {
+        final list = jsonDecode(json) as List;
+        _items = list
+            .map((e) => ShoppingItem.fromJson(e as Map<String, dynamic>))
+            .toList();
+      } catch (_) {
+        _items = [];
+      }
+    }
+    notifyListeners();
+  }
+
+  Future<void> _save() async {
+    final json = jsonEncode(_items.map((i) => i.toJson()).toList());
+    await StorageService.save(kStorageKeyShopping, json);
+  }
+
+  void add(String name) {
+    final t = name.trim();
+    if (t.isEmpty) return;
+    _items = [
+      ..._items,
+      ShoppingItem(
+        id: DateTime.now().millisecondsSinceEpoch.toString(),
+        name: t,
+      ),
+    ];
+    notifyListeners();
+    _save();
+  }
+
+  void addAll(List<String> names) {
+    final existing = _items.map((i) => i.name.toLowerCase()).toSet();
+    final seen = <String>{};
+    final toAdd = <ShoppingItem>[];
+    for (final name in names) {
+      final key = name.toLowerCase().trim();
+      if (key.isNotEmpty && !existing.contains(key) && seen.add(key)) {
+        toAdd.add(ShoppingItem(
+          id: '${DateTime.now().millisecondsSinceEpoch}_${seen.length}',
+          name: name.trim(),
+        ));
+      }
+    }
+    if (toAdd.isEmpty) return;
+    _items = [..._items, ...toAdd];
+    notifyListeners();
+    _save();
+  }
+
+  void toggle(String id) {
+    _items = _items
+        .map((i) => i.id == id ? i.copyWith(checked: !i.checked) : i)
+        .toList();
+    notifyListeners();
+    _save();
+  }
+
+  void remove(String id) {
+    _items = _items.where((i) => i.id != id).toList();
+    notifyListeners();
+    _save();
+  }
+
+  void clearAll() {
+    _items = [];
+    notifyListeners();
+    _save();
+  }
+}