121 lines
3.4 KiB
Dart
121 lines
3.4 KiB
Dart
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import 'dart:convert';
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import 'package:flutter/material.dart';
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import 'package:mobile_scanner/mobile_scanner.dart';
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import 'package:provider/provider.dart';
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import '../../models/meal_plan.dart';
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import '../../providers/meal_planner_provider.dart';
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import '../../../../core/constants/app_constants.dart';
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class QrScanPage extends StatefulWidget {
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const QrScanPage({super.key});
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@override
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State<QrScanPage> createState() => _QrScanPageState();
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}
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class _QrScanPageState extends State<QrScanPage> {
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bool _handled = false;
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void _onDetect(BarcodeCapture capture, BuildContext context) {
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if (_handled) return;
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final raw = capture.barcodes.firstOrNull?.rawValue;
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if (raw == null) return;
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setState(() => _handled = true);
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try {
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final parsed = jsonDecode(raw) as Map<String, dynamic>;
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if (parsed['v'] != 1 || parsed['meals'] is! Map) {
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_showError(context, 'QR non valido: dati non riconosciuti.');
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return;
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}
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final mealsMap = parsed['meals'] as Map<String, dynamic>;
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for (final day in kDayIds) {
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final dayData = mealsMap[day];
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if (dayData is! Map) {
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_showError(context, 'QR non valido: struttura dati errata.');
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return;
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}
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for (final slot in kMealSlots) {
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if (dayData[slot] is! List) {
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_showError(context, 'QR non valido: struttura dati errata.');
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return;
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}
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}
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}
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final plan = MealPlan(Map.fromEntries(
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kDayIds.map((day) {
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final d = mealsMap[day] as Map<String, dynamic>;
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return MapEntry(
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day,
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DayPlan(
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colazione: List<String>.from(d['colazione'] as List),
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pranzo: List<String>.from(d['pranzo'] as List),
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cena: List<String>.from(d['cena'] as List),
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),
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);
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}),
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));
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context.read<MealPlannerProvider>().importPlan(plan);
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if (context.mounted) {
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Navigator.pop(context);
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('Piano ricevuto!')),
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);
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}
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} catch (_) {
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_showError(context, 'QR non riconosciuto.');
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}
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}
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void _showError(BuildContext context, String msg) {
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if (!context.mounted) return;
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Navigator.pop(context);
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(msg),
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backgroundColor: Theme.of(context).colorScheme.error,
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),
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);
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}
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@override
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Widget build(BuildContext context) {
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final scheme = Theme.of(context).colorScheme;
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return Scaffold(
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appBar: AppBar(title: const Text('Scansiona QR')),
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body: Stack(
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children: [
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MobileScanner(
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onDetect: (capture) => _onDetect(capture, context),
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),
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// cornice di mira
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Center(
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child: Container(
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width: 220,
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height: 220,
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decoration: BoxDecoration(
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border: Border.all(color: scheme.primary, width: 3),
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borderRadius: BorderRadius.circular(12),
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),
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),
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),
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Positioned(
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bottom: 40,
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left: 0, right: 0,
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child: Text(
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'Inquadra il codice QR dell\'altro dispositivo',
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textAlign: TextAlign.center,
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style: const TextStyle(color: Colors.white, fontSize: 14),
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),
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),
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],
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),
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);
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}
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}
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