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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/meal_planner/models/meal_plan.dart
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import 'dart:convert';
class DayPlan {
final List<String> colazione;
final List<String> pranzo;
final List<String> cena;
DayPlan({
List<String>? colazione,
List<String>? pranzo,
List<String>? cena,
}) : colazione = colazione ?? [],
pranzo = pranzo ?? [],
cena = cena ?? [];
DayPlan copyWith({
List<String>? colazione,
List<String>? pranzo,
List<String>? cena,
}) =>
DayPlan(
colazione: colazione ?? List.of(this.colazione),
pranzo: pranzo ?? List.of(this.pranzo),
cena: cena ?? List.of(this.cena),
);
List<String> slot(String name) => switch (name) {
'colazione' => colazione,
'pranzo' => pranzo,
'cena' => cena,
_ => const [],
};
Map<String, dynamic> toJson() => {
'colazione': colazione,
'pranzo': pranzo,
'cena': cena,
};
factory DayPlan.fromJson(Map<String, dynamic> json) => DayPlan(
colazione: List<String>.from(json['colazione'] ?? []),
pranzo: List<String>.from(json['pranzo'] ?? []),
cena: List<String>.from(json['cena'] ?? []),
);
}
class MealPlan {
final Map<String, DayPlan> days;
const MealPlan(this.days);
factory MealPlan.empty(List<String> dayIds) =>
MealPlan({for (final d in dayIds) d: DayPlan()});
MealPlan withUpdatedDay(String dayId, DayPlan updated) =>
MealPlan({...days, dayId: updated});
bool get hasAnyMeal => days.values.any(
(d) =>
d.colazione.isNotEmpty ||
d.pranzo.isNotEmpty ||
d.cena.isNotEmpty,
);
List<String> get allItems => days.values
.expand((d) => [...d.colazione, ...d.pranzo, ...d.cena])
.toList();
Map<String, dynamic> toJson() =>
{for (final e in days.entries) e.key: e.value.toJson()};
factory MealPlan.fromJson(Map<String, dynamic> json) => MealPlan({
for (final e in json.entries)
e.key: DayPlan.fromJson(e.value as Map<String, dynamic>),
});
String toJsonString() => jsonEncode(toJson());
factory MealPlan.fromJsonString(String s) =>
MealPlan.fromJson(jsonDecode(s) as Map<String, dynamic>);
}
lib/features/meal_planner/presentation/pages/meal_planner_page.dart
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import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../../providers/meal_planner_provider.dart';
import '../widgets/meal_card.dart';
import '../../../shopping_list/providers/shopping_list_provider.dart';
import '../../../../core/constants/app_constants.dart';
class MealPlannerPage extends StatelessWidget {
final VoidCallback onGoShopping;
const MealPlannerPage({super.key, required this.onGoShopping});
String get _todayId {
const ids = [
'',
'lunedi',
'martedi',
'mercoledi',
'giovedi',
'venerdi',
'sabato',
'domenica',
];
return ids[DateTime.now().weekday];
}
String get _todayFormatted {
final now = DateTime.now();
const months = [
'gennaio', 'febbraio', 'marzo', 'aprile', 'maggio', 'giugno',
'luglio', 'agosto', 'settembre', 'ottobre', 'novembre', 'dicembre',
];
const weekdays = [
'', 'lunedì', 'martedì', 'mercoledì', 'giovedì', 'venerdì', 'sabato', 'domenica',
];
return 'Oggi, ${weekdays[now.weekday]} ${now.day} ${months[now.month - 1]}';
}
Future<void> _confirmClear(BuildContext context) async {
final ok = await showDialog<bool>(
context: context,
builder: (ctx) => AlertDialog(
title: const Text('Svuota piano'),
content: const Text('Svuotare tutto il piano settimanale?'),
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 && context.mounted) {
context.read<MealPlannerProvider>().clearAll();
}
}
void _generateShopping(BuildContext context) {
final plan = context.read<MealPlannerProvider>().plan;
context.read<ShoppingListProvider>().addAll(plan.allItems);
onGoShopping();
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final provider = context.watch<MealPlannerProvider>();
final todayId = _todayId;
return Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(16, 56, 16, 8),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
'Piano Pasti',
style: theme.textTheme.headlineSmall
?.copyWith(fontWeight: FontWeight.bold),
),
Text(
_todayFormatted,
style: theme.textTheme.bodyMedium?.copyWith(
color: theme.colorScheme.onSurface.withValues(alpha: 0.6),
),
),
],
),
),
Expanded(
child: ListView(
padding: const EdgeInsets.fromLTRB(16, 4, 16, 16),
children: [
for (final dayId in kDayIds)
MealCard(
key: ValueKey(dayId),
dayId: dayId,
dayLabel: kDayLabels[dayId]!,
dayPlan: provider.plan.days[dayId] ??
(throw StateError('Day $dayId not found')),
initiallyExpanded: dayId == todayId,
onAdd: (slot, text) =>
context.read<MealPlannerProvider>().addItem(dayId, slot, text),
onRemove: (slot, index) =>
context.read<MealPlannerProvider>().removeItem(dayId, slot, index),
),
const SizedBox(height: 8),
FilledButton.icon(
onPressed: () => _generateShopping(context),
icon: const Icon(Icons.shopping_cart_outlined),
label: const Text('Genera lista della spesa'),
style: FilledButton.styleFrom(
minimumSize: const Size(double.infinity, 52),
),
),
if (provider.plan.hasAnyMeal) ...[
const SizedBox(height: 8),
OutlinedButton(
onPressed: () => _confirmClear(context),
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 piano'),
),
],
],
),
),
],
);
}
}
lib/features/meal_planner/presentation/widgets/meal_card.dart
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import 'package:flutter/material.dart';
import '../../models/meal_plan.dart';
import '../../../../core/constants/app_constants.dart';
class MealCard extends StatefulWidget {
final String dayId;
final String dayLabel;
final DayPlan dayPlan;
final bool initiallyExpanded;
final void Function(String slot, String text) onAdd;
final void Function(String slot, int index) onRemove;
const MealCard({
super.key,
required this.dayId,
required this.dayLabel,
required this.dayPlan,
required this.onAdd,
required this.onRemove,
this.initiallyExpanded = false,
});
@override
State<MealCard> createState() => _MealCardState();
}
class _MealCardState extends State<MealCard> {
late final Map<String, TextEditingController> _controllers = {
for (final slot in kMealSlots) slot: TextEditingController(),
};
@override
void dispose() {
for (final c in _controllers.values) {
c.dispose();
}
super.dispose();
}
void _add(String slot) {
final text = _controllers[slot]!.text.trim();
if (text.isEmpty) return;
widget.onAdd(slot, text);
_controllers[slot]!.clear();
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final totalItems = widget.dayPlan.colazione.length +
widget.dayPlan.pranzo.length +
widget.dayPlan.cena.length;
return Card(
margin: const EdgeInsets.only(bottom: 8),
clipBehavior: Clip.antiAlias,
child: ExpansionTile(
initiallyExpanded: widget.initiallyExpanded,
title: Text(
widget.dayLabel,
style: theme.textTheme.titleMedium
?.copyWith(fontWeight: FontWeight.w600),
),
subtitle: totalItems > 0
? Text('$totalItems voc${totalItems == 1 ? 'e' : 'i'}')
: null,
children: [
const Divider(height: 1),
for (final slot in kMealSlots)
_SlotSection(
label: kMealSlotLabels[slot]!,
items: widget.dayPlan.slot(slot),
controller: _controllers[slot]!,
onAdd: () => _add(slot),
onRemove: (i) => widget.onRemove(slot, i),
isLast: slot == kMealSlots.last,
),
],
),
);
}
}
class _SlotSection extends StatelessWidget {
final String label;
final List<String> items;
final TextEditingController controller;
final VoidCallback onAdd;
final void Function(int) onRemove;
final bool isLast;
const _SlotSection({
required this.label,
required this.items,
required this.controller,
required this.onAdd,
required this.onRemove,
required this.isLast,
});
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.fromLTRB(16, 12, 16, 6),
child: Text(
label,
style: theme.textTheme.labelMedium?.copyWith(
color: theme.colorScheme.primary,
fontWeight: FontWeight.w700,
letterSpacing: 0.3,
),
),
),
for (int i = 0; i < items.length; i++)
_ItemRow(text: items[i], onRemove: () => onRemove(i)),
Padding(
padding: const EdgeInsets.fromLTRB(16, 6, 16, 12),
child: Row(
children: [
Expanded(
child: TextField(
controller: controller,
decoration: InputDecoration(
hintText: 'Aggiungi a ${label.toLowerCase()}…',
isDense: true,
contentPadding: const EdgeInsets.symmetric(
horizontal: 12,
vertical: 10,
),
),
onSubmitted: (_) => onAdd(),
textInputAction: TextInputAction.done,
),
),
const SizedBox(width: 8),
SizedBox(
width: 44,
height: 44,
child: FilledButton(
onPressed: onAdd,
style: FilledButton.styleFrom(
padding: EdgeInsets.zero,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
),
),
child: const Icon(Icons.add, size: 20),
),
),
],
),
),
if (!isLast) const Divider(height: 1),
],
);
}
}
class _ItemRow extends StatelessWidget {
final String text;
final VoidCallback onRemove;
const _ItemRow({required this.text, required this.onRemove});
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 3),
child: Row(
children: [
Icon(
Icons.circle,
size: 5,
color: theme.colorScheme.onSurface.withValues(alpha: 0.3),
),
const SizedBox(width: 10),
Expanded(child: Text(text, style: theme.textTheme.bodyMedium)),
IconButton(
onPressed: onRemove,
icon: const Icon(Icons.close, size: 16),
visualDensity: VisualDensity.compact,
color: theme.colorScheme.onSurface.withValues(alpha: 0.35),
),
],
),
);
}
}
lib/features/meal_planner/providers/meal_planner_provider.dart
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import 'package:flutter/material.dart';
import '../models/meal_plan.dart';
import '../../../shared/services/storage_service.dart';
import '../../../core/constants/app_constants.dart';
class MealPlannerProvider extends ChangeNotifier {
MealPlan _plan = MealPlan.empty(kDayIds);
MealPlan get plan => _plan;
Future<void> load() async {
final json = await StorageService.load(kStorageKeyMeals);
if (json != null) {
try {
_plan = MealPlan.fromJsonString(json);
} catch (_) {
_plan = MealPlan.empty(kDayIds);
}
}
notifyListeners();
}
Future<void> _save() =>
StorageService.save(kStorageKeyMeals, _plan.toJsonString());
void addItem(String dayId, String slot, String text) {
final t = text.trim();
if (t.isEmpty) return;
final day = _plan.days[dayId]!;
final updated = switch (slot) {
'colazione' => day.copyWith(colazione: [...day.colazione, t]),
'pranzo' => day.copyWith(pranzo: [...day.pranzo, t]),
'cena' => day.copyWith(cena: [...day.cena, t]),
_ => day,
};
_plan = _plan.withUpdatedDay(dayId, updated);
notifyListeners();
_save();
}
void removeItem(String dayId, String slot, int index) {
final day = _plan.days[dayId]!;
final updated = switch (slot) {
'colazione' =>
day.copyWith(colazione: List.of(day.colazione)..removeAt(index)),
'pranzo' =>
day.copyWith(pranzo: List.of(day.pranzo)..removeAt(index)),
'cena' =>
day.copyWith(cena: List.of(day.cena)..removeAt(index)),
_ => day,
};
_plan = _plan.withUpdatedDay(dayId, updated);
notifyListeners();
_save();
}
void clearAll() {
_plan = MealPlan.empty(kDayIds);
notifyListeners();
_save();
}
}