added categories, import export, settings

2026-08-29 16:45:27 +02:00
parent 2a5a922aab
commit 732a0dc14a
30 changed files with 3700 additions and 167 deletions
@@ -0,0 +1,108 @@
+/// Bottom navigation: products, scan, and shop log.
+library;
+
+import 'package:flutter/material.dart';
+
+import 'products_screen.dart';
+import 'scan_screen.dart';
+import 'services/app_settings.dart';
+import 'services/product_repository.dart';
+import 'shop_log_screen.dart';
+
+class HomeShell extends StatefulWidget {
+  const HomeShell({super.key, required this.repository});
+
+  final ProductRepository repository;
+
+  @override
+  State<HomeShell> createState() => _HomeShellState();
+}
+
+class _HomeShellState extends State<HomeShell> {
+  static const _scanIndex = 1;
+  static const _shopLogIndex = 2;
+
+  int _index = _scanIndex;
+  int _revision = 0;
+  AppSettings? _settings;
+  int _seenGeneration = 0;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    final settings = SettingsScope.maybeOf(context);
+    if (settings != _settings) {
+      _settings?.removeListener(_onSettings);
+      _settings = settings;
+      _seenGeneration = settings?.catalogGeneration ?? 0;
+      _settings?.addListener(_onSettings);
+    }
+  }
+
+  @override
+  void dispose() {
+    _settings?.removeListener(_onSettings);
+    super.dispose();
+  }
+
+  void _onSettings() {
+    final generation = _settings?.catalogGeneration ?? 0;
+    if (generation == _seenGeneration) return;
+    _seenGeneration = generation;
+    if (mounted) setState(() => _revision++);
+  }
+
+  void _onTripSaved() {
+    setState(() {
+      _index = _shopLogIndex;
+      _revision++;
+    });
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('Shopping trip saved.')),
+      );
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: switch (_index) {
+        0 => ProductsScreen(
+            key: ValueKey('products-$_revision'),
+            repository: widget.repository,
+          ),
+        1 => ScanScreen(
+            repository: widget.repository,
+            onTripSaved: _onTripSaved,
+          ),
+        _ => ShopLogScreen(
+            key: ValueKey('shops-$_revision'),
+            repository: widget.repository,
+          ),
+      },
+      bottomNavigationBar: NavigationBar(
+        selectedIndex: _index,
+        onDestinationSelected: (index) => setState(() => _index = index),
+        destinations: const [
+          NavigationDestination(
+            icon: Icon(Icons.inventory_2_outlined),
+            selectedIcon: Icon(Icons.inventory_2),
+            label: 'Products',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.photo_camera_outlined),
+            selectedIcon: Icon(Icons.photo_camera),
+            label: 'Scan',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.receipt_long_outlined),
+            selectedIcon: Icon(Icons.receipt_long),
+            label: 'Shop log',
+          ),
+        ],
+      ),
+    );
+  }
+}