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nearle_pos/lib/presentation/modules/screens/promos_view.dart
2026-08-06 19:29:23 +05:30

311 lines
10 KiB
Dart

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../../app/providers.dart';
import '../../../core/theme/app_colors.dart';
import '../../../core/theme/app_dimens.dart';
import '../../../core/utils/formatters.dart';
import '../../../domain/entities/promo.dart';
import '../../../domain/entities/store_account.dart';
import '../../auth/providers/auth_controller.dart';
import '../../../core/widgets/empty_state.dart';
import '../widgets/module_widgets.dart';
import '../widgets/promo_editor_dialog.dart';
/// Discount rules and campaigns.
///
/// This was a mockup: three hardcoded rows with a toggle that changed nothing,
/// and no promo code anywhere in the domain or data layers. A cashier looking
/// at it would reasonably conclude promotions were running. They were not.
class PromosView extends ConsumerWidget {
const PromosView({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final promosAsync = ref.watch(promosProvider);
final isAdmin = ref.watch(currentUserProvider)?.role == StaffRole.admin;
return ModulePage(
children: [
promosAsync.when(
loading: () => const Padding(
padding: EdgeInsets.all(AppSpacing.xxl),
child: Center(child: CircularProgressIndicator()),
),
error: (e, _) => Text('Could not load campaigns: $e'),
// Stretch, not the Column default of centre. Centred, every card
// shrank to its own intrinsic width and floated in the middle of the
// page instead of starting at the left edge like every other module.
data: (promos) => Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
_summary(promos),
const SizedBox(height: AppSpacing.lg),
_campaignList(context, ref, promos, isAdmin: isAdmin),
],
),
),
],
);
}
Widget _summary(List<Promo> promos) {
final live = promos.where((p) => p.isLiveAt(DateTime.now())).length;
final scheduled = promos
.where((p) =>
p.isActive &&
p.validFrom != null &&
p.validFrom!.isAfter(DateTime.now()),)
.length;
return Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: StatTile(
label: 'Running now',
value: '$live',
icon: Icons.play_circle_outline_rounded,
color: AppColors.success,
),
),
const SizedBox(width: AppSpacing.md),
Expanded(
child: StatTile(
label: 'Scheduled',
value: '$scheduled',
icon: Icons.schedule_rounded,
color: AppColors.info,
),
),
const SizedBox(width: AppSpacing.md),
Expanded(
child: StatTile(
label: 'Paused',
value: '${promos.where((p) => !p.isActive).length}',
icon: Icons.pause_circle_outline_rounded,
color: AppColors.textTertiary,
),
),
],
);
}
Widget _campaignList(
BuildContext context,
WidgetRef ref,
List<Promo> promos, {
required bool isAdmin,
}) {
return PanelCard(
title: 'Campaigns',
subtitle: promos.isEmpty
? 'Nothing running. Add a campaign and the till applies it '
'automatically.'
: 'Applied automatically at the till, in priority order',
action: isAdmin
? FilledButton.icon(
onPressed: () => showPromoEditor(context),
icon: const Icon(Icons.add_rounded, size: 18),
label: const Text('New campaign'),
style: FilledButton.styleFrom(
backgroundColor: AppColors.primary,
minimumSize: const Size(0, 40),
),
)
: null,
child: promos.isEmpty
? const EmptyState(
title: 'No campaigns yet',
message: 'A campaign here is applied to every bill that '
'qualifies, without the cashier doing anything.',
emoji: '🏷️',
compact: true,
)
: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
for (final promo in promos)
_PromoRow(promo: promo, isAdmin: isAdmin),
],
),
);
}
}
class _PromoRow extends ConsumerWidget {
const _PromoRow({required this.promo, required this.isAdmin});
final Promo promo;
final bool isAdmin;
@override
Widget build(BuildContext context, WidgetRef ref) {
final live = promo.isLiveAt(DateTime.now());
return Container(
margin: const EdgeInsets.only(bottom: AppSpacing.sm),
padding: const EdgeInsets.all(AppSpacing.md),
decoration: BoxDecoration(
color: AppColors.surfaceAlt,
borderRadius: AppRadius.brMd,
border: Border.all(color: AppColors.border),
),
// Wrap prevents collision when the panel is narrow.
child: Wrap(
alignment: WrapAlignment.spaceBetween,
crossAxisAlignment: WrapCrossAlignment.center,
spacing: AppSpacing.md,
runSpacing: AppSpacing.sm,
children: [
SizedBox(
width: 360,
child: Row(
children: [
Container(
width: 38,
height: 38,
decoration: BoxDecoration(
color: (live ? AppColors.success : AppColors.textTertiary)
.withValues(alpha: 0.12),
borderRadius: AppRadius.brSm,
),
child: Icon(
Icons.sell_rounded,
size: 18,
color: live ? AppColors.success : AppColors.textTertiary,
),
),
const SizedBox(width: AppSpacing.md),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
Text(
promo.name,
overflow: TextOverflow.ellipsis,
style: const TextStyle(fontWeight: FontWeight.w700),
),
Text(
promo.summary,
overflow: TextOverflow.ellipsis,
style: const TextStyle(
fontSize: 12.5,
color: AppColors.textSecondary,
),
),
],
),
),
],
),
),
Wrap(
crossAxisAlignment: WrapCrossAlignment.center,
spacing: AppSpacing.sm,
children: [
if (promo.stackable)
const TagChip('Stacks', color: AppColors.info),
// The distinction a shop actually needs: switched on, but out of
// its date range or wrong day, is not the same as switched off.
if (promo.isActive && !live)
const TagChip('Not today', color: AppColors.warning),
Text(
_window(promo),
style: const TextStyle(
fontSize: 12,
color: AppColors.textTertiary,
),
),
if (isAdmin) ...[
Switch(
value: promo.isActive,
onChanged: (v) async {
await ref
.read(localStoreProvider)
.promos
.setActive(promo.id, active: v);
ref
..invalidate(promosProvider)
..invalidate(activePromosProvider);
},
),
IconButton(
tooltip: 'Edit',
icon: const Icon(Icons.edit_outlined, size: 17),
onPressed: () => showPromoEditor(context, existing: promo),
),
IconButton(
tooltip: 'Delete',
icon: const Icon(Icons.delete_outline_rounded, size: 17),
color: AppColors.danger,
onPressed: () => _confirmDelete(context, ref),
),
],
],
),
],
),
);
}
String _window(Promo promo) {
final from = promo.validFrom;
final to = promo.validTo;
if (from == null && to == null) {
return promo.daysOfWeek.isEmpty ? 'Always' : _days(promo.daysOfWeek);
}
final range = [
if (from != null) 'from ${Formatters.date(from)}',
if (to != null) 'to ${Formatters.date(to)}',
].join(' ');
return promo.daysOfWeek.isEmpty
? range
: '$range · ${_days(promo.daysOfWeek)}';
}
static String _days(Set<int> days) {
const names = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'];
final sorted = days.toList()..sort();
return sorted.map((d) => names[d - 1]).join(', ');
}
Future<void> _confirmDelete(BuildContext context, WidgetRef ref) async {
final confirmed = await showDialog<bool>(
context: context,
builder: (dialogContext) => AlertDialog(
title: Text('Delete "${promo.name}"?'),
content: const Text(
'Bills already rung keep the discount they were given — a bill '
'stores the amount, not a link to the campaign. Only future sales '
'are affected.',
),
actions: [
TextButton(
onPressed: () => Navigator.of(dialogContext).pop(false),
child: const Text('Cancel'),
),
TextButton(
onPressed: () => Navigator.of(dialogContext).pop(true),
style: TextButton.styleFrom(foregroundColor: AppColors.danger),
child: const Text('Delete'),
),
],
),
);
if (confirmed != true) return;
await ref.read(localStoreProvider).promos.delete(promo.id);
ref
..invalidate(promosProvider)
..invalidate(activePromosProvider);
}
}