second commit

2026-07-29 11:41:53 +05:30
parent fcccf22bac
commit d72522e737
211 changed files with 19260 additions and 0 deletions
--- a/lib/presentation/pos/screens/pos_dashboard_screen.dart
+++ b/lib/presentation/pos/screens/pos_dashboard_screen.dart
@@ -0,0 +1,171 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/services/barcode_service.dart';
+import '../../../core/theme/app_colors.dart';
+import '../../../core/theme/app_dimens.dart';
+import '../../../core/theme/app_layout.dart';
+import '../../modules/screens/customers_view.dart';
+import '../../modules/screens/events_view.dart';
+import '../../modules/screens/product_import_view.dart';
+import '../../modules/screens/promos_view.dart';
+import '../../modules/screens/settings_view.dart';
+import '../../sync/providers/sync_controller.dart';
+import '../providers/cart_controller.dart';
+import '../providers/navigation_provider.dart';
+import '../widgets/app_sidebar.dart';
+import '../widgets/billing_panel.dart';
+import '../widgets/cart_fab.dart';
+import '../widgets/page_header.dart';
+import 'pos_view.dart';
+
+/// Application shell.
+///
+/// Owns the sidebar, page header and the body for whichever module is active.
+/// Keeping one shell means navigation never rebuilds the chrome, and the
+/// scanner stays live across modules.
+///
+/// Layout collapses in a fixed order as width shrinks:
+///
+/// * `>= 1300`   sidebar with labels, docked bill
+/// * `1120–1300` sidebar as an icon rail, docked bill
+/// * `920–1120`  icon rail, bill becomes a bottom sheet
+/// * `< 920`     sidebar goes off-canvas behind a menu button
+class PosDashboardScreen extends ConsumerStatefulWidget {
+  const PosDashboardScreen({super.key});
+
+  @override
+  ConsumerState<PosDashboardScreen> createState() => _PosDashboardScreenState();
+}
+
+class _PosDashboardScreenState extends ConsumerState<PosDashboardScreen> {
+  final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
+  final FocusNode _searchFocus = FocusNode();
+  late final BarcodeService _barcode;
+
+  @override
+  void initState() {
+    super.initState();
+
+    // The scanner behaves like a keyboard, so listen globally rather than
+    // depending on any one field holding focus. A scan from another module
+    // jumps back to billing, which is what a cashier expects.
+    _barcode = BarcodeService(
+      onScan: (code) {
+        // Without an imported catalogue there is nothing to resolve against.
+        if (!ref.read(catalogueReadyProvider)) return;
+        ref.read(activeModuleProvider.notifier).state = PosModule.pos;
+        ref.read(cartControllerProvider.notifier).scanBarcode(code);
+      },
+    )..attach();
+  }
+
+  @override
+  void dispose() {
+    _barcode.dispose();
+    _searchFocus.dispose();
+    super.dispose();
+  }
+
+  void _openBillingSheet() {
+    showModalBottomSheet<void>(
+      context: context,
+      isScrollControlled: true,
+      backgroundColor: Colors.transparent,
+      builder: (_) => FractionallySizedBox(
+        heightFactor: 0.92,
+        child: ClipRRect(
+          borderRadius: const BorderRadius.vertical(
+            top: Radius.circular(AppRadius.xxl),
+          ),
+          child: const BillingPanel(inSheet: true),
+        ),
+      ),
+    );
+  }
+
+  Widget _body(PosModule module, PosLayout layout) => switch (module) {
+        PosModule.pos => PosView(layout: layout, searchFocus: _searchFocus),
+        PosModule.customers => const CustomersView(),
+        PosModule.productImport => const ProductImportView(),
+        PosModule.promos => const PromosView(),
+        PosModule.events => const EventsView(),
+        PosModule.settings => const SettingsView(),
+      };
+
+  @override
+  Widget build(BuildContext context) {
+    final layout = PosLayout.of(context);
+    final module = ref.watch(activeModuleProvider);
+    final ready = ref.watch(catalogueReadyProvider);
+    final isPos = module == PosModule.pos && ready;
+
+    // Only the terminal itself needs the bill docked beside it.
+    final showDockedBill = isPos && !layout.billingIsSheet;
+    final showCartFab = isPos && layout.billingIsSheet;
+
+    return Scaffold(
+      key: _scaffoldKey,
+      backgroundColor: AppColors.background,
+      drawer: layout.sidebarIsDrawer
+          ? Drawer(
+              width: PosLayout.expandedWidth,
+              backgroundColor: AppColors.surface,
+              child: AppSidebar(
+                mode: SidebarMode.expanded,
+                onDestinationTap: () => Navigator.of(context).maybePop(),
+              ),
+            )
+          : null,
+      floatingActionButton:
+          showCartFab ? CartFab(onTap: _openBillingSheet) : null,
+      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
+      body: CallbackShortcuts(
+        bindings: {
+          const SingleActivator(LogicalKeyboardKey.f2):
+              _searchFocus.requestFocus,
+          const SingleActivator(LogicalKeyboardKey.f8): () =>
+              ref.read(cartControllerProvider.notifier).undo(),
+          const SingleActivator(LogicalKeyboardKey.escape):
+              _searchFocus.unfocus,
+        },
+        child: Focus(
+          autofocus: true,
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              if (!layout.sidebarIsDrawer) AppSidebar(mode: layout.sidebar),
+              Expanded(
+                child: Column(
+                  children: [
+                    PageHeader(
+                      layout: layout,
+                      onMenuTap: () => _scaffoldKey.currentState?.openDrawer(),
+                    ),
+                    Expanded(
+                      child: AnimatedSwitcher(
+                        duration: AppMotion.fast,
+                        child: KeyedSubtree(
+                          key: ValueKey(module),
+                          child: _body(module, layout),
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+              if (showDockedBill) ...[
+                const VerticalDivider(width: 1),
+                SizedBox(
+                  width: layout.billingWidth,
+                  child: const BillingPanel(),
+                ),
+              ],
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}