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import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter/widget_previews.dart';
import 'package:go_router/go_router.dart';
import 'package:kooltab2/viewmodels/product_list_view_model.dart';
import 'package:provider/provider.dart';
import 'dart:io';
import 'package:flutter_slidable/flutter_slidable.dart';
import '../models/bar_tab.dart';
import '../models/product.dart';
import '../models/tab_item.dart';
import '../viewmodels/bar_screen_view_model.dart';
class BarScreenView extends StatelessWidget {
const BarScreenView({super.key});
@override
Widget build(BuildContext context) {
final viewModel = context.watch<BarScreenViewModel>();
final productsViewModel = context.watch<ProductListViewModel>();
return Scaffold(
appBar: AppBar(
actions: [
IconButton(
tooltip: 'Manage products',
onPressed: () => context.go('/products'),
icon: const Icon(Icons.inventory_2_outlined),
),
IconButton(
tooltip: 'Refresh',
onPressed: viewModel.load,
icon: const Icon(Icons.refresh),
),
],
),
resizeToAvoidBottomInset: false,
body: Builder(
builder: (context) {
if (viewModel.isLoading) {
return const Center(child: CircularProgressIndicator());
}
if (viewModel.errorMessage != null) {
return Center(child: Text(viewModel.errorMessage!));
}
return Row(
children: [
Expanded(
flex: 3,
child: _ProductGrid(
products: productsViewModel.products,
hasSelectedTab: viewModel.selectedTab != null,
onProductTap: (product) async {
if (viewModel.selectedTab == null) {
ScaffoldMessenger.of(context).showSnackBar(
const SnackBar(
content: Text('Open or select a tab first.'),
),
);
return;
}
await viewModel.addProductToSelectedTab(product);
},
),
),
const VerticalDivider(width: 1),
Expanded(
flex: 1,
child: _TabPanel(
tabs: viewModel.tabs,
selectedTab: viewModel.selectedTab,
selectedTabId: viewModel.selectedTabId,
onNewTabPressed: () => _showNewTabDialog(context),
onTabSelected: viewModel.selectTab,
onItemQuantityChanged: viewModel.changeItemQuantity,
onCloseTabPressed: () => _confirmCloseTab(context),
onTabClosed: viewModel.closeTab,
),
),
],
);
},
),
);
}
Future<void> _showNewTabDialog(BuildContext context) async {
final controller = TextEditingController();
final name = await showDialog<String>(
context: context,
builder: (dialogContext) {
return AlertDialog(
title: const Text('Open new tab'),
content: TextField(
controller: controller,
autofocus: true,
decoration: const InputDecoration(
labelText: 'Customer / group name',
border: OutlineInputBorder(),
),
onSubmitted: (value) {
Navigator.of(dialogContext).pop(value);
},
),
actions: [
TextButton(
onPressed: () => Navigator.of(dialogContext).pop(),
child: const Text('Cancel'),
),
FilledButton(
onPressed: () {
Navigator.of(dialogContext).pop(controller.text);
},
child: const Text('Open tab'),
),
],
);
},
);
if (name == null || name.trim().isEmpty) return;
if (!context.mounted) return;
await context.read<BarScreenViewModel>().createTab(name.trim());
}
Future<void> _confirmCloseTab(BuildContext context) async {
final viewModel = context.read<BarScreenViewModel>();
final tab = viewModel.selectedTab;
if (tab == null) return;
final confirmed = await showDialog<bool>(
context: context,
builder: (dialogContext) {
return AlertDialog(
title: Text('Close ${tab.customerName}ʼs tab?'),
content: Text(
'Current total: ${tab.formattedTotal}\n\n'
'Payments are not handled yet, so this only marks the tab as closed.',
),
actions: [
TextButton(
onPressed: () => Navigator.of(dialogContext).pop(false),
child: const Text('Cancel'),
),
FilledButton(
onPressed: () => Navigator.of(dialogContext).pop(true),
child: const Text('Close tab'),
),
],
);
},
);
if (confirmed != true) return;
await viewModel.closeSelectedTab();
}
}
class _ProductGrid extends StatelessWidget {
final List<Product> products;
final bool hasSelectedTab;
final ValueChanged<Product> onProductTap;
const _ProductGrid({
required this.products,
required this.hasSelectedTab,
required this.onProductTap,
});
@override
Widget build(BuildContext context) {
if (products.isEmpty) {
return Center(
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
const Icon(Icons.inventory_2_outlined, size: 48),
const SizedBox(height: 12),
const Text('No products yet.'),
const SizedBox(height: 12),
FilledButton.icon(
onPressed: () => context.go('/products/new'),
icon: const Icon(Icons.add),
label: const Text('Add product'),
),
],
),
);
}
return LayoutBuilder(
builder: (context, constraints) {
final columns = ((constraints.maxWidth / 170).floor())
.clamp(3, 6)
.toInt();
return GridView.builder(
padding: const EdgeInsets.all(16),
itemCount: products.length,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: columns,
crossAxisSpacing: 12,
mainAxisSpacing: 12,
childAspectRatio: 1,
),
itemBuilder: (context, index) {
final product = products[index];
return _ProductTile(
product: product,
enabled: hasSelectedTab,
onTap: () => onProductTap(product),
);
},
);
},
);
}
}
class _ProductTile extends StatelessWidget {
final Product product;
final bool enabled;
final VoidCallback onTap;
const _ProductTile({
required this.product,
required this.enabled,
required this.onTap,
});
bool get _hasImage {
final imagePath = product.imagePath;
if (imagePath == null || imagePath.isEmpty) {
return false;
}
return File(imagePath).existsSync();
}
@override
Widget build(BuildContext context) {
return Card(
clipBehavior: Clip.antiAlias,
margin: EdgeInsets.zero,
child: InkWell(
onTap: enabled ? onTap : null,
child: Opacity(
opacity: enabled ? 1 : 0.45,
child: _hasImage
? Image.file(
File(product.imagePath!),
fit: BoxFit.scaleDown,
width: double.infinity,
height: double.infinity,
)
: const Center(
child: Stack(
children: [
Icon(Icons.image_not_supported_outlined, size: 42),
Text("No Image found!"),
],
),
),
),
),
);
}
}
class _TabPanel extends StatefulWidget {
final List<BarTab> tabs;
final BarTab? selectedTab;
final String? selectedTabId;
final VoidCallback onNewTabPressed;
final ValueChanged<String> onTabSelected;
final Future<void> Function(TabItem item, int quantity) onItemQuantityChanged;
final VoidCallback onCloseTabPressed;
final ValueChanged<String> onTabClosed;
const _TabPanel({
required this.tabs,
required this.selectedTab,
required this.selectedTabId,
required this.onNewTabPressed,
required this.onTabSelected,
required this.onItemQuantityChanged,
required this.onCloseTabPressed,
required this.onTabClosed,
});
@override
State<_TabPanel> createState() => _TabPanelState();
}
class _TabPanelState extends State<_TabPanel> {
final TextEditingController _searchController = TextEditingController();
String _searchQuery = '';
@override
void dispose() {
_searchController.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
final filteredTabs = widget.tabs.where((tab) {
return tab.customerName.toLowerCase().contains(
_searchQuery.toLowerCase(),
);
}).toList();
return Padding(
padding: const EdgeInsets.all(12),
child: Column(
children: [
SizedBox(
width: double.infinity,
child: FilledButton.icon(
onPressed: widget.onNewTabPressed,
icon: const Icon(Icons.add),
label: const Text('Open tab'),
),
),
const SizedBox(height: 12),
TextField(
controller: _searchController,
onChanged: (value) {
setState(() {
_searchQuery = value;
});
},
decoration: const InputDecoration(
hintText: 'Search name...',
prefixIcon: Icon(Icons.search),
),
),
const SizedBox(height: 12),
Align(
alignment: Alignment.centerLeft,
child: Text(
'Open tabs',
style: Theme.of(context).textTheme.titleMedium,
),
),
const SizedBox(height: 8),
SizedBox(
height: 200,
child: _OpenTabsList(
tabs: filteredTabs,
selectedTabId: widget.selectedTabId,
onTabSelected: widget.onTabSelected,
onTabClosed: widget.onTabClosed,
),
),
const Divider(height: 24),
Expanded(
child: widget.selectedTab == null
? const Center(child: Text('Select or open a tab.'))
: _SelectedTabDetails(
tab: widget.selectedTab!,
onItemQuantityChanged: widget.onItemQuantityChanged,
onCloseTabPressed: widget.onCloseTabPressed,
),
),
],
),
);
}
}
class _OpenTabsList extends StatelessWidget {
final List<BarTab> tabs;
final String? selectedTabId;
final ValueChanged<String> onTabSelected;
final ValueChanged<String> onTabClosed;
const _OpenTabsList({
required this.tabs,
required this.selectedTabId,
required this.onTabSelected,
required this.onTabClosed,
});
@override
Widget build(BuildContext context) {
if (tabs.isEmpty) {
return const Center(child: Text('No open tabs.'));
}
return ListView.separated(
itemCount: tabs.length,
separatorBuilder: (_, __) => const SizedBox(height: 6),
itemBuilder: (context, index) {
final tab = tabs[index];
final selected = tab.id == selectedTabId;
return ClipRRect(
child: Slidable(
key: ValueKey(tab.id),
endActionPane: ActionPane(
motion: const DrawerMotion(),
extentRatio: 0.65,
children: [
SlidableAction(
onPressed: (_) {
onTabSelected(tab.id);
// TODO: rename/edit tab
},
icon: Icons.edit_outlined,
label: 'Edit',
backgroundColor: Theme.of(context).colorScheme.secondary,
foregroundColor: Theme.of(context).colorScheme.onSecondary,
),
SlidableAction(
onPressed: (_) => onTabClosed(tab.id),
icon: Icons.close,
label: 'Close',
backgroundColor: Theme.of(context).colorScheme.error,
foregroundColor: Theme.of(context).colorScheme.onError,
),
],
),
child: Card(
margin: EdgeInsets.zero,
color: selected
? Theme.of(context).colorScheme.primaryContainer
: null,
child: ListTile(
dense: true,
selected: selected,
title: Text(
tab.customerName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
subtitle: Text('${tab.itemCount} items • ${tab.formattedTotal}'),
onTap: () => onTabSelected(tab.id),
),
),
),
);
},
);
}
}
class _SelectedTabDetails extends StatelessWidget {
final BarTab tab;
final Future<void> Function(TabItem item, int quantity) onItemQuantityChanged;
final VoidCallback onCloseTabPressed;
const _SelectedTabDetails({
required this.tab,
required this.onItemQuantityChanged,
required this.onCloseTabPressed,
});
@override
Widget build(BuildContext context) {
return Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
tab.customerName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
style: Theme.of(context).textTheme.titleLarge,
),
const SizedBox(height: 4),
Text(
'Total: ${tab.formattedTotal}',
style: Theme.of(context).textTheme.titleMedium,
),
const SizedBox(height: 12),
Expanded(
child: tab.items.isEmpty
? const Center(child: Text('Tap products to add them.'))
: ListView.separated(
itemCount: tab.items.length,
separatorBuilder: (_, __) => const Divider(height: 1),
itemBuilder: (context, index) {
final item = tab.items[index];
return _TabItemRow(
item: item,
onQuantityChanged: onItemQuantityChanged,
);
},
),
),
const Divider(height: 24),
Row(
children: [
Expanded(
child: Text(
tab.formattedTotal,
style: Theme.of(context).textTheme.headlineSmall,
),
),
FilledButton(
onPressed: onCloseTabPressed,
child: const Text('Close'),
),
],
),
],
);
}
}
class _TabItemRow extends StatelessWidget {
final TabItem item;
final Future<void> Function(TabItem item, int quantity) onQuantityChanged;
const _TabItemRow({required this.item, required this.onQuantityChanged});
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.symmetric(vertical: 8),
child: Row(
children: [
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
item.productName,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
Text(
'${item.quantity} × ${item.formattedUnitPrice}',
style: Theme.of(context).textTheme.bodySmall,
),
],
),
),
IconButton(
visualDensity: VisualDensity.compact,
onPressed: () => onQuantityChanged(item, item.quantity - 1),
icon: const Icon(Icons.remove_circle_outline),
),
Text('${item.quantity}'),
IconButton(
visualDensity: VisualDensity.compact,
onPressed: () => onQuantityChanged(item, item.quantity + 1),
icon: const Icon(Icons.add_circle_outline),
),
SizedBox(
width: 72,
child: Text(item.formattedLineTotal, textAlign: TextAlign.end),
),
],
),
);
}
}