second commit
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171
lib/presentation/pos/screens/pos_dashboard_screen.dart
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171
lib/presentation/pos/screens/pos_dashboard_screen.dart
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../../../core/services/barcode_service.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/theme/app_dimens.dart';
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import '../../../core/theme/app_layout.dart';
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import '../../modules/screens/customers_view.dart';
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import '../../modules/screens/events_view.dart';
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import '../../modules/screens/product_import_view.dart';
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import '../../modules/screens/promos_view.dart';
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import '../../modules/screens/settings_view.dart';
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import '../../sync/providers/sync_controller.dart';
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import '../providers/cart_controller.dart';
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import '../providers/navigation_provider.dart';
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import '../widgets/app_sidebar.dart';
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import '../widgets/billing_panel.dart';
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import '../widgets/cart_fab.dart';
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import '../widgets/page_header.dart';
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import 'pos_view.dart';
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/// Application shell.
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///
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/// Owns the sidebar, page header and the body for whichever module is active.
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/// Keeping one shell means navigation never rebuilds the chrome, and the
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/// scanner stays live across modules.
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///
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/// Layout collapses in a fixed order as width shrinks:
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///
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/// * `>= 1300` sidebar with labels, docked bill
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/// * `1120–1300` sidebar as an icon rail, docked bill
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/// * `920–1120` icon rail, bill becomes a bottom sheet
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/// * `< 920` sidebar goes off-canvas behind a menu button
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class PosDashboardScreen extends ConsumerStatefulWidget {
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const PosDashboardScreen({super.key});
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@override
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ConsumerState<PosDashboardScreen> createState() => _PosDashboardScreenState();
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}
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class _PosDashboardScreenState extends ConsumerState<PosDashboardScreen> {
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final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
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final FocusNode _searchFocus = FocusNode();
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late final BarcodeService _barcode;
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@override
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void initState() {
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super.initState();
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// The scanner behaves like a keyboard, so listen globally rather than
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// depending on any one field holding focus. A scan from another module
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// jumps back to billing, which is what a cashier expects.
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_barcode = BarcodeService(
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onScan: (code) {
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// Without an imported catalogue there is nothing to resolve against.
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if (!ref.read(catalogueReadyProvider)) return;
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ref.read(activeModuleProvider.notifier).state = PosModule.pos;
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ref.read(cartControllerProvider.notifier).scanBarcode(code);
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},
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)..attach();
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}
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@override
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void dispose() {
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_barcode.dispose();
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_searchFocus.dispose();
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super.dispose();
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}
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void _openBillingSheet() {
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showModalBottomSheet<void>(
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context: context,
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isScrollControlled: true,
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backgroundColor: Colors.transparent,
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builder: (_) => FractionallySizedBox(
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heightFactor: 0.92,
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child: ClipRRect(
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borderRadius: const BorderRadius.vertical(
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top: Radius.circular(AppRadius.xxl),
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),
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child: const BillingPanel(inSheet: true),
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),
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),
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);
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}
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Widget _body(PosModule module, PosLayout layout) => switch (module) {
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PosModule.pos => PosView(layout: layout, searchFocus: _searchFocus),
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PosModule.customers => const CustomersView(),
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PosModule.productImport => const ProductImportView(),
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PosModule.promos => const PromosView(),
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PosModule.events => const EventsView(),
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PosModule.settings => const SettingsView(),
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};
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@override
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Widget build(BuildContext context) {
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final layout = PosLayout.of(context);
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final module = ref.watch(activeModuleProvider);
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final ready = ref.watch(catalogueReadyProvider);
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final isPos = module == PosModule.pos && ready;
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// Only the terminal itself needs the bill docked beside it.
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final showDockedBill = isPos && !layout.billingIsSheet;
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final showCartFab = isPos && layout.billingIsSheet;
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return Scaffold(
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key: _scaffoldKey,
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backgroundColor: AppColors.background,
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drawer: layout.sidebarIsDrawer
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? Drawer(
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width: PosLayout.expandedWidth,
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backgroundColor: AppColors.surface,
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child: AppSidebar(
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mode: SidebarMode.expanded,
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onDestinationTap: () => Navigator.of(context).maybePop(),
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),
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)
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: null,
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floatingActionButton:
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showCartFab ? CartFab(onTap: _openBillingSheet) : null,
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floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
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body: CallbackShortcuts(
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bindings: {
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const SingleActivator(LogicalKeyboardKey.f2):
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_searchFocus.requestFocus,
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const SingleActivator(LogicalKeyboardKey.f8): () =>
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ref.read(cartControllerProvider.notifier).undo(),
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const SingleActivator(LogicalKeyboardKey.escape):
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_searchFocus.unfocus,
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},
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child: Focus(
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autofocus: true,
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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if (!layout.sidebarIsDrawer) AppSidebar(mode: layout.sidebar),
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Expanded(
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child: Column(
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children: [
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PageHeader(
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layout: layout,
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onMenuTap: () => _scaffoldKey.currentState?.openDrawer(),
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),
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Expanded(
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child: AnimatedSwitcher(
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duration: AppMotion.fast,
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child: KeyedSubtree(
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key: ValueKey(module),
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child: _body(module, layout),
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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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if (showDockedBill) ...[
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const VerticalDivider(width: 1),
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SizedBox(
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width: layout.billingWidth,
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child: const BillingPanel(),
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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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}
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}
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197
lib/presentation/pos/screens/pos_view.dart
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197
lib/presentation/pos/screens/pos_view.dart
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@@ -0,0 +1,197 @@
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import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/theme/app_dimens.dart';
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import '../../../core/theme/app_layout.dart';
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import '../../../core/widgets/primary_button.dart';
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import '../../sync/providers/sync_controller.dart';
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import '../providers/navigation_provider.dart';
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import '../widgets/category_chips.dart';
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import '../widgets/customer_bar.dart';
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import '../widgets/product_grid.dart';
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import '../widgets/scan_toast.dart';
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import '../widgets/search_field.dart';
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/// Catalogue half of the terminal.
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///
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/// Gated on the catalogue import: with no products loaded there is nothing to
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/// sell, so the cashier is sent to the import step instead of a broken grid.
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class PosView extends ConsumerWidget {
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const PosView({super.key, required this.layout, required this.searchFocus});
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final PosLayout layout;
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final FocusNode searchFocus;
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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if (!ref.watch(catalogueReadyProvider)) {
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return const _CatalogueRequired();
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}
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final pad = layout.contentPadding;
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// Keep the last grid row clear of the floating bill button.
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final bottomInset = layout.billingIsSheet
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? AppSizes.buttonHeightLarge + AppSpacing.xxxl
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: AppSpacing.xxl;
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return Stack(
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children: [
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Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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const CustomerBar(),
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const Divider(height: 1),
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Padding(
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padding:
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EdgeInsets.fromLTRB(pad, AppSpacing.lg, pad, AppSpacing.md),
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child: PosSearchField(focusNode: searchFocus),
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),
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CategoryChips(horizontalPadding: pad),
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const SizedBox(height: AppSpacing.md),
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Expanded(
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child: ProductGrid(
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horizontalPadding: pad,
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tileExtent: layout.gridTileExtent,
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bottomPadding: bottomInset,
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),
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),
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],
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),
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Positioned(
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left: 0,
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right: 0,
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bottom: bottomInset,
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child: const Align(
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alignment: Alignment.bottomCenter,
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child: ScanToast(),
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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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/// Shown until the catalogue has been pulled onto this terminal.
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class _CatalogueRequired extends ConsumerWidget {
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const _CatalogueRequired();
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final state = ref.watch(catalogueImportProvider);
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final running = state is ImportRunning;
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return Center(
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child: SingleChildScrollView(
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padding: const EdgeInsets.all(AppSpacing.xxl),
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child: ConstrainedBox(
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constraints: const BoxConstraints(maxWidth: 460),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Container(
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width: 96,
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height: 96,
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decoration: const BoxDecoration(
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color: AppColors.primarySurface,
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shape: BoxShape.circle,
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),
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child: const Icon(Icons.cloud_download_outlined,
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size: 42, color: AppColors.primary),
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),
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const SizedBox(height: AppSpacing.xxl),
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Text(
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'Import products to start billing',
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textAlign: TextAlign.center,
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style: Theme.of(context).textTheme.headlineSmall,
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),
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const SizedBox(height: AppSpacing.sm),
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const Text(
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'This terminal has no catalogue yet. Pull the current products '
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'once at the start of your shift — after that everything runs '
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'offline.',
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textAlign: TextAlign.center,
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style: TextStyle(
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fontSize: 14,
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color: AppColors.textSecondary,
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height: 1.6,
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),
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),
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const SizedBox(height: AppSpacing.xxl),
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if (running) ...[
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Text(
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state.stage,
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style: const TextStyle(
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fontSize: 13,
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color: AppColors.textSecondary,
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),
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),
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const SizedBox(height: AppSpacing.sm),
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ClipRRect(
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borderRadius: AppRadius.brPill,
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child: LinearProgressIndicator(
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value: state.progress,
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minHeight: 8,
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backgroundColor: AppColors.divider,
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valueColor: const AlwaysStoppedAnimation<Color>(
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AppColors.primary),
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),
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),
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const SizedBox(height: AppSpacing.lg),
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],
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if (state is ImportFailed) ...[
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Container(
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padding: const EdgeInsets.all(AppSpacing.md),
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margin: const EdgeInsets.only(bottom: AppSpacing.lg),
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decoration: BoxDecoration(
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color: AppColors.dangerSurface,
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borderRadius: AppRadius.brSm,
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),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Icon(Icons.wifi_off_rounded,
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color: AppColors.danger, size: 18),
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const SizedBox(width: AppSpacing.sm),
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Expanded(
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child: Text(
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state.message,
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style: const TextStyle(
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color: AppColors.danger,
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fontSize: 13,
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height: 1.45,
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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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PrimaryButton(
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label: 'Import catalogue now',
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icon: Icons.cloud_download_rounded,
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large: true,
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busy: running,
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onPressed: running
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? null
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: () => ref.read(catalogueImportProvider.notifier).run(),
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),
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const SizedBox(height: AppSpacing.md),
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TextButton.icon(
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onPressed: () => ref
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.read(activeModuleProvider.notifier)
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.state = PosModule.productImport,
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icon: const Icon(Icons.open_in_new_rounded, size: 16),
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label: const Text('Open Product Import'),
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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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}
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Block a user