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import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { PieChart } from 'react-native-gifted-charts';
import { Colors, Radius, Spacing, Typography } from '@/constants/theme';
import type { DashboardExpenseItem } from '@/types';
import { Card, SectionLabel } from './primitives';
interface ExpensesChartProps {
recurring: DashboardExpenseItem[];
oneTime: DashboardExpenseItem[];
}
const CATEGORY_COLORS: Record<string, string> = {
moradia: '#4C6EF5',
alimentação: '#FA5252',
transporte: '#FAB005',
saúde: '#12B886',
educação: '#BE4BDB',
lazer: '#FF922B',
serviços: '#228BE6',
outros: '#868E96',
};
const CATEGORY_LABELS: Record<string, string> = {
moradia: 'Moradia',
alimentação: 'Alimentação',
transporte: 'Transporte',
saúde: 'Saúde',
educação: 'Educação',
lazer: 'Lazer',
serviços: 'Serviços',
outros: 'Outros',
};
export function ExpensesChart({ recurring, oneTime }: ExpensesChartProps) {
const categoryTotals: Record<string, number> = {};
const allExpenses = [
...recurring.filter(e => e.is_active && e.type === 'expense'),
...oneTime.filter(e => e.type === 'expense')
];
if (allExpenses.length === 0) {
return (
<Card style={styles.card}>
<SectionLabel text="Análise de Gastos" />
<View style={styles.emptyContainer}>
<Text style={styles.emptyText}>Não há despesas para analisar neste mês.</Text>
</View>
</Card>
);
}
let totalExpenses = 0;
allExpenses.forEach(e => {
if (!categoryTotals[e.category]) {
categoryTotals[e.category] = 0;
}
categoryTotals[e.category] += e.amount;
totalExpenses += e.amount;
});
const pieData = Object.keys(categoryTotals)
.map(category => ({
value: categoryTotals[category],
color: CATEGORY_COLORS[category] || CATEGORY_COLORS.outros,
label: CATEGORY_LABELS[category] || 'Outros',
percentage: ((categoryTotals[category] / totalExpenses) * 100).toFixed(0) + '%',
}))
.sort((a, b) => b.value - a.value);
return (
<Card style={styles.card}>
<SectionLabel text="Análise de Gastos" />
<View style={styles.chartRow}>
<View style={styles.chartWrapper}>
<PieChart
data={pieData}
donut
radius={70}
innerRadius={50}
innerCircleColor={Colors.surface}
centerLabelComponent={() => {
return (
<View style={styles.centerLabel}>
<Text style={styles.centerLabelValue}>
{totalExpenses.toLocaleString('pt-BR', {
style: 'currency',
currency: 'BRL',
minimumFractionDigits: 0,
maximumFractionDigits: 0,
})}
</Text>
<Text style={styles.centerLabelText}>Total</Text>
</View>
);
}}
/>
</View>
<View style={styles.legendContainer}>
{pieData.map((item, index) => (
<View key={index} style={styles.legendItem}>
<View style={[styles.legendDot, { backgroundColor: item.color }]} />
<View style={styles.legendTextWrapper}>
<Text style={styles.legendLabel} numberOfLines={1}>{item.label}</Text>
<Text style={styles.legendValue}>
{item.value.toLocaleString('pt-BR', {
style: 'currency',
currency: 'BRL',
})} ({item.percentage})
</Text>
</View>
</View>
))}
</View>
</View>
</Card>
);
}
const styles = StyleSheet.create({
card: {
gap: Spacing.md,
},
emptyContainer: {
paddingVertical: Spacing.xl,
alignItems: 'center',
justifyContent: 'center',
},
emptyText: {
...Typography.body,
color: Colors.textMuted,
},
chartRow: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
},
chartWrapper: {
alignItems: 'center',
justifyContent: 'center',
},
centerLabel: {
alignItems: 'center',
justifyContent: 'center',
},
centerLabelValue: {
...Typography.body,
fontFamily: 'DMSans_700Bold',
color: Colors.textPrimary,
fontSize: 14,
},
centerLabelText: {
...Typography.caption,
color: Colors.textSecondary,
fontSize: 10,
},
legendContainer: {
flex: 1,
marginLeft: Spacing.lg,
gap: Spacing.sm,
},
legendItem: {
flexDirection: 'row',
alignItems: 'center',
},
legendDot: {
width: 10,
height: 10,
borderRadius: 5,
marginRight: Spacing.xs,
},
legendTextWrapper: {
flex: 1,
},
legendLabel: {
...Typography.caption,
color: Colors.textSecondary,
},
legendValue: {
...Typography.caption,
color: Colors.textPrimary,
fontFamily: 'DMSans_600SemiBold',
},
});
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