Files
Casha/lib/features/categories/screen.dart
T
2026-06-24 00:47:07 +03:00

488 lines
16 KiB
Dart

import 'package:fl_chart/fl_chart.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../../core/constants.dart';
import '../../core/l10n/app_strings.dart';
import '../../core/l10n/locale_provider.dart';
import '../../core/services/haptic_service.dart';
import '../../shared/providers/amount_format_provider.dart';
import '../../shared/utils/currency_utils.dart';
import '../../shared/widgets/byn_sign.dart';
import '../dashboard/provider.dart';
import '../settings/provider.dart';
import 'provider.dart';
import 'widgets/account_scope_chips.dart';
class CategoriesScreen extends ConsumerStatefulWidget {
const CategoriesScreen({super.key});
@override
ConsumerState<CategoriesScreen> createState() => _CategoriesScreenState();
}
class _CategoriesScreenState extends ConsumerState<CategoriesScreen> {
int _touchedIndex = -1;
bool _showIncome = false;
@override
Widget build(BuildContext context) {
final s = ref.watch(stringsProvider);
final data = _showIncome
? ref.watch(categoryIncomeProvider)
: ref.watch(categoryExpenseProvider);
final total = data.values.fold(0.0, (a, b) => a + b);
final currencyInfo = ref.watch(statsCurrencyProvider);
final timeFilter = ref.watch(timeFilterProvider);
final sortedEntries = data.entries.toList()
..sort((a, b) => b.value.compareTo(a.value));
return Scaffold(
backgroundColor: Theme.of(context).scaffoldBackgroundColor,
appBar: AppBar(
title: Text(
s.statistics,
style: Theme.of(context).textTheme.titleLarge?.copyWith(
fontWeight: FontWeight.w700,
color: Theme.of(context).colorScheme.onSurface,
),
),
),
body: SafeArea(
child: Padding(
padding: const EdgeInsets.fromLTRB(20, 8, 20, 0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const AccountScopeChips(),
const SizedBox(height: 16),
Row(
children: [
Expanded(
child: _TimeFilterChip(
label: s.filterAllTime,
isSelected: timeFilter == TimeFilter.allTime,
onTap: () {
HapticService.selection();
ref.read(timeFilterProvider.notifier).set(TimeFilter.allTime);
},
),
),
const SizedBox(width: 8),
Expanded(
child: _TimeFilterChip(
label: s.filterMonth,
isSelected: timeFilter == TimeFilter.lastMonth,
onTap: () {
HapticService.selection();
ref.read(timeFilterProvider.notifier).set(TimeFilter.lastMonth);
},
),
),
],
),
const SizedBox(height: 16),
Row(
children: [
Expanded(
child: _TypeSegment(
label: s.expenses,
isSelected: !_showIncome,
onTap: () {
HapticService.selection();
setState(() {
_showIncome = false;
_touchedIndex = -1;
});
},
),
),
const SizedBox(width: 8),
Expanded(
child: _TypeSegment(
label: s.income,
isSelected: _showIncome,
onTap: () {
HapticService.selection();
setState(() {
_showIncome = true;
_touchedIndex = -1;
});
},
),
),
],
),
const SizedBox(height: 20),
if (data.isEmpty)
Expanded(child: _EmptyState(isIncome: _showIncome))
else
Expanded(
child: ListView(
children: [
_PieChartSection(
data: data,
total: total,
touchedIndex: _touchedIndex,
onTouch: (i) => setState(() => _touchedIndex = i),
currencyInfo: currencyInfo,
isIncome: _showIncome,
),
const SizedBox(height: 24),
Text(
s.rankedByAmount,
style: Theme.of(context).textTheme.titleMedium
?.copyWith(
fontWeight: FontWeight.w600,
color: Theme.of(context).colorScheme.onSurface,
),
),
const SizedBox(height: 16),
...sortedEntries.map((entry) {
final cat = entry.key;
final amount = entry.value;
return Padding(
padding: const EdgeInsets.only(bottom: 8),
child: _CategoryItem(
category: cat,
amount: amount,
total: total,
currencyInfo: currencyInfo,
isIncome: _showIncome,
),
);
}),
const SizedBox(height: 80),
],
),
),
],
),
),
),
);
}
}
class _TimeFilterChip extends StatelessWidget {
final String label;
final bool isSelected;
final VoidCallback onTap;
const _TimeFilterChip({
required this.label,
required this.isSelected,
required this.onTap,
});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Container(
padding: const EdgeInsets.symmetric(vertical: 12),
decoration: BoxDecoration(
color: isSelected
? AppColors.accent
: Theme.of(context).colorScheme.surface,
borderRadius: BorderRadius.circular(12),
),
child: Text(
label,
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w600,
color: isSelected
? Colors.white
: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
),
),
),
);
}
}
class _TypeSegment extends StatelessWidget {
final String label;
final bool isSelected;
final VoidCallback onTap;
const _TypeSegment({
required this.label,
required this.isSelected,
required this.onTap,
});
@override
Widget build(BuildContext context) {
return GestureDetector(
onTap: onTap,
child: Container(
padding: const EdgeInsets.symmetric(vertical: 12),
decoration: BoxDecoration(
color: isSelected
? (_showIncomeColor(label) ? AppColors.income : AppColors.expense)
: Colors.transparent,
borderRadius: BorderRadius.circular(12),
),
child: Text(
label,
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w600,
color: isSelected
? Colors.white
: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
),
),
),
);
}
bool _showIncomeColor(String label) {
final lower = label.toLowerCase();
return lower.contains('income') || lower.contains('доход');
}
}
class _PieChartSection extends ConsumerWidget {
final Map<String, double> data;
final double total;
final int touchedIndex;
final ValueChanged<int> onTouch;
final CurrencyInfo currencyInfo;
final bool isIncome;
const _PieChartSection({
required this.data,
required this.total,
required this.touchedIndex,
required this.onTouch,
required this.currencyInfo,
required this.isIncome,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final s = ref.watch(stringsProvider);
final fmt = ref.watch(amountFormatProvider);
final entries = data.entries.toList();
final accent = isIncome ? AppColors.income : AppColors.expense;
return SizedBox(
height: 240,
child: Stack(
alignment: Alignment.center,
children: [
PieChart(
PieChartData(
pieTouchData: PieTouchData(
touchCallback: (event, response) {
if (!event.isInterestedForInteractions ||
response == null ||
response.touchedSection == null) {
onTouch(-1);
return;
}
onTouch(response.touchedSection!.touchedSectionIndex);
},
),
sectionsSpace: 2,
centerSpaceRadius: 70,
sections: List.generate(entries.length, (i) {
final isTouched = i == touchedIndex;
final cat = entries[i].key;
final val = entries[i].value;
final color =
AppCategories.colors[cat] ?? AppColors.accent;
return PieChartSectionData(
color: color,
value: val,
title: isTouched
? '${(val / total * 100).toStringAsFixed(0)}%'
: '',
radius: isTouched ? 55 : 48,
titleStyle: const TextStyle(
fontSize: 12,
fontWeight: FontWeight.w700,
color: Colors.white,
),
);
}),
),
),
Column(
mainAxisSize: MainAxisSize.min,
children: [
Text(
s.total,
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.onSurface.withOpacity(0.5),
fontSize: 11,
),
),
const SizedBox(height: 4),
currencyInfo.code == 'BYN'
? Row(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
BynSign(
fontSize: 24,
color: accent,
),
const SizedBox(width: 2),
Text(
formatAmount('', total, fmt),
style: Theme.of(context).textTheme.titleLarge?.copyWith(
color: accent,
fontWeight: FontWeight.w700,
fontSize: 24,
),
),
],
)
: Text(
formatAmount(currencyInfo.symbol, total, fmt),
style: Theme.of(context).textTheme.titleLarge?.copyWith(
color: accent,
fontWeight: FontWeight.w700,
fontSize: 24,
),
),
],
),
],
),
);
}
}
class _CategoryItem extends ConsumerWidget {
final String category;
final double amount;
final double total;
final CurrencyInfo currencyInfo;
final bool isIncome;
const _CategoryItem({
required this.category,
required this.amount,
required this.total,
required this.currencyInfo,
required this.isIncome,
});
@override
Widget build(BuildContext context, WidgetRef ref) {
final s = ref.watch(stringsProvider);
final fmt = ref.watch(amountFormatProvider);
final color = AppCategories.colors[category] ?? AppColors.accent;
final icon = AppCategories.icons[category] ?? Icons.category_rounded;
final pct = total > 0 ? amount / total : 0.0;
return Row(
children: [
Container(
padding: const EdgeInsets.all(10),
decoration: BoxDecoration(
color: color.withOpacity(0.12),
borderRadius: BorderRadius.circular(10),
),
child: Icon(icon, color: color, size: 20),
),
const SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
s.categoryLabel(category),
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
fontWeight: FontWeight.w600,
color: Theme.of(context).colorScheme.onSurface,
),
),
const SizedBox(height: 2),
Text(
'${(pct * 100).toStringAsFixed(1)}%',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.onSurface.withOpacity(0.5),
fontSize: 12,
),
),
],
),
),
currencyInfo.code == 'BYN'
? Row(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
BynSign(
fontSize: 15,
color: isIncome ? AppColors.income : AppColors.expense,
),
const SizedBox(width: 2),
Text(
formatAmount('', amount, fmt),
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: isIncome ? AppColors.income : AppColors.expense,
fontWeight: FontWeight.w700,
),
),
],
)
: Text(
formatAmount(currencyInfo.symbol, amount, fmt),
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: isIncome ? AppColors.income : AppColors.expense,
fontWeight: FontWeight.w700,
),
),
],
);
}
}
class _EmptyState extends ConsumerWidget {
final bool isIncome;
const _EmptyState({required this.isIncome});
@override
Widget build(BuildContext context, WidgetRef ref) {
final s = ref.watch(stringsProvider);
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.pie_chart_outline_rounded,
size: 56,
color: Theme.of(context).colorScheme.onSurface.withOpacity(0.3),
),
const SizedBox(height: 16),
Text(
isIncome ? s.noIncomeData : s.noExpenseData,
style: Theme.of(context).textTheme.titleMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurface.withOpacity(0.7),
fontWeight: FontWeight.w600,
),
),
const SizedBox(height: 8),
Text(
isIncome ? s.addIncomeToSeeBreakdown : s.addExpensesToSeeBreakdown,
textAlign: TextAlign.center,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurface.withOpacity(0.4),
),
),
],
),
);
}
}