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feat: riscrivi app in Flutter

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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>
This commit is contained in:
Davide Grilli
2026-05-16 17:41:26 +02:00
parent d49b31f21d
commit eb7912421c
20 changed files with 1656 additions and 0 deletions
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lib/features/shopping_list/models/shopping_item.dart
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class ShoppingItem {
final String id;
final String name;
final bool checked;
const ShoppingItem({
required this.id,
required this.name,
this.checked = false,
});
ShoppingItem copyWith({String? id, String? name, bool? checked}) =>
ShoppingItem(
id: id ?? this.id,
name: name ?? this.name,
checked: checked ?? this.checked,
);
Map<String, dynamic> toJson() => {
'id': id,
'name': name,
'checked': checked,
};
factory ShoppingItem.fromJson(Map<String, dynamic> json) => ShoppingItem(
id: json['id'] as String,
name: json['name'] as String,
checked: json['checked'] as bool? ?? false,
);
}
lib/features/shopping_list/presentation/pages/shopping_list_page.dart
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import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../../providers/shopping_list_provider.dart';
import '../widgets/shopping_item_tile.dart';
import '../../../../shared/widgets/empty_state.dart';
class ShoppingListPage extends StatefulWidget {
const ShoppingListPage({super.key});
@override
State<ShoppingListPage> createState() => _ShoppingListPageState();
}
class _ShoppingListPageState extends State<ShoppingListPage> {
final _controller = TextEditingController();
@override
void dispose() {
_controller.dispose();
super.dispose();
}
void _add() {
final text = _controller.text.trim();
if (text.isEmpty) return;
context.read<ShoppingListProvider>().add(text);
_controller.clear();
}
Future<void> _confirmClear() async {
final ok = await showDialog<bool>(
context: context,
builder: (ctx) => AlertDialog(
title: const Text('Svuota lista'),
content: const Text('Svuotare tutta la lista della spesa?'),
actions: [
TextButton(
onPressed: () => Navigator.pop(ctx, false),
child: const Text('Annulla'),
),
TextButton(
onPressed: () => Navigator.pop(ctx, true),
style: TextButton.styleFrom(
foregroundColor: Theme.of(ctx).colorScheme.error,
),
child: const Text('Svuota'),
),
],
),
);
if (ok == true && mounted) {
context.read<ShoppingListProvider>().clearAll();
}
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final provider = context.watch<ShoppingListProvider>();
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(16, 56, 16, 8),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Lista della spesa',
style: theme.textTheme.headlineSmall
?.copyWith(fontWeight: FontWeight.bold),
),
if (provider.items.isNotEmpty)
Text(
'${provider.checkedItems.length} / ${provider.items.length} '
'completat${provider.checkedItems.length == 1 ? 'o' : 'i'}',
style: theme.textTheme.bodyMedium?.copyWith(
color: theme.colorScheme.onSurface.withValues(alpha: 0.6),
),
),
],
),
),
// Add row
Padding(
padding: const EdgeInsets.fromLTRB(16, 0, 16, 8),
child: Row(
children: [
Expanded(
child: TextField(
controller: _controller,
decoration:
const InputDecoration(hintText: 'Aggiungi elemento…'),
onSubmitted: (_) => _add(),
textInputAction: TextInputAction.done,
),
),
const SizedBox(width: 8),
FilledButton(
onPressed: _add,
style: FilledButton.styleFrom(
minimumSize: const Size(52, 52),
padding: EdgeInsets.zero,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
),
child: const Icon(Icons.add),
),
],
),
),
Expanded(
child: provider.items.isEmpty
? const EmptyState(
icon: Icons.shopping_cart_outlined,
title: 'Lista vuota',
subtitle: 'Aggiungi qualcosa con il campo qui sopra.',
)
: ListView(
padding: const EdgeInsets.fromLTRB(16, 0, 16, 16),
children: [
// Pending items
if (provider.pendingItems.isNotEmpty)
Card(
margin: EdgeInsets.zero,
child: Column(
children: [
for (int i = 0;
i < provider.pendingItems.length;
i++) ...[
if (i > 0)
const Divider(
height: 1, indent: 16, endIndent: 16),
ShoppingItemTile(
item: provider.pendingItems[i],
onToggle: () => context
.read<ShoppingListProvider>()
.toggle(provider.pendingItems[i].id),
onRemove: () => context
.read<ShoppingListProvider>()
.remove(provider.pendingItems[i].id),
),
],
],
),
),
// Checked section
if (provider.checkedItems.isNotEmpty) ...[
Padding(
padding: const EdgeInsets.symmetric(vertical: 12),
child: Row(
children: [
Text(
'COMPLETATI (${provider.checkedItems.length})',
style: theme.textTheme.labelSmall?.copyWith(
fontWeight: FontWeight.w700,
letterSpacing: 0.8,
color: theme.colorScheme.onSurface
.withValues(alpha: 0.5),
),
),
const SizedBox(width: 8),
Expanded(
child: Divider(
color: theme.colorScheme.outline
.withValues(alpha: 0.4),
),
),
],
),
),
Card(
margin: EdgeInsets.zero,
child: Column(
children: [
for (int i = 0;
i < provider.checkedItems.length;
i++) ...[
if (i > 0)
const Divider(
height: 1, indent: 16, endIndent: 16),
ShoppingItemTile(
item: provider.checkedItems[i],
onToggle: () => context
.read<ShoppingListProvider>()
.toggle(provider.checkedItems[i].id),
onRemove: () => context
.read<ShoppingListProvider>()
.remove(provider.checkedItems[i].id),
),
],
],
),
),
],
const SizedBox(height: 16),
OutlinedButton(
onPressed: _confirmClear,
style: OutlinedButton.styleFrom(
foregroundColor: theme.colorScheme.error,
side: BorderSide(
color: theme.colorScheme.error.withValues(alpha: 0.4),
),
minimumSize: const Size(double.infinity, 48),
),
child: const Text('Svuota lista'),
),
],
),
),
],
);
}
}
lib/features/shopping_list/presentation/widgets/shopping_item_tile.dart
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import 'package:flutter/material.dart';
import '../../models/shopping_item.dart';
class ShoppingItemTile extends StatelessWidget {
final ShoppingItem item;
final VoidCallback onToggle;
final VoidCallback onRemove;
const ShoppingItemTile({
super.key,
required this.item,
required this.onToggle,
required this.onRemove,
});
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final muted = theme.colorScheme.onSurface.withValues(alpha: 0.35);
return InkWell(
onTap: onToggle,
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
child: Row(
children: [
Checkbox(
value: item.checked,
onChanged: (_) => onToggle(),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(4),
),
),
Expanded(
child: Text(
item.name,
style: item.checked
? theme.textTheme.bodyMedium?.copyWith(
decoration: TextDecoration.lineThrough,
color: muted,
)
: theme.textTheme.bodyMedium,
),
),
IconButton(
onPressed: onRemove,
icon: const Icon(Icons.close, size: 16),
visualDensity: VisualDensity.compact,
color: muted,
),
],
),
),
);
}
}
lib/features/shopping_list/providers/shopping_list_provider.dart
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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();
}
}