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import React, { useMemo } from 'react';
import {
AreaChart,
Area,
XAxis,
YAxis,
CartesianGrid,
Tooltip,
Legend,
ResponsiveContainer,
} from 'recharts';
import { formatNumber, type TimeRange } from '@/lib/monitoring/percentiles';
export interface VolumeDataPoint {
timestamp: Date | string;
total: number;
successful: number;
clientErrors: number; // 4xx
serverErrors: number; // 5xx
}
export interface RequestVolumeChartProps {
/** Volume data points */
data: VolumeDataPoint[];
/** Selected time range for formatting */
timeRange: TimeRange;
/** Show stacked area chart */
stacked?: boolean;
/** Chart height in pixels */
height?: number;
/** Loading state */
isLoading?: boolean;
}
// Color palette
const COLORS = {
successful: { stroke: '#10B981', fill: '#10B981' }, // green
clientErrors: { stroke: '#F59E0B', fill: '#F59E0B' }, // amber
serverErrors: { stroke: '#EF4444', fill: '#EF4444' }, // red
};
/**
* Custom tooltip component for the volume chart
*/
function CustomTooltip({
active,
payload,
label,
}: {
active?: boolean;
payload?: Array<{ name: string; value: number; color: string }>;
label?: number;
}) {
if (!active || !payload?.length || !label) return null;
const total = payload.reduce((sum, entry) => sum + entry.value, 0);
return (
<div className="bg-white dark:bg-gray-800 border border-gray-200 dark:border-gray-700 rounded-lg shadow-lg p-3">
<p className="text-sm font-medium text-gray-900 dark:text-white mb-2">
{new Date(label).toLocaleString()}
</p>
{payload.map((entry, index) => (
<p key={index} className="text-sm" style={{ color: entry.color }}>
{entry.name}: {formatNumber(entry.value)}
</p>
))}
<p className="text-sm font-medium text-gray-900 dark:text-white mt-2 pt-2 border-t border-gray-200 dark:border-gray-700">
Total: {formatNumber(total)}
</p>
</div>
);
}
/**
* RequestVolumeChart displays request volume over time with success/error breakdown
*/
export function RequestVolumeChart({
data,
timeRange,
stacked = true,
height = 300,
isLoading = false,
}: RequestVolumeChartProps) {
// Format data for Recharts
const chartData = useMemo(() => {
return data.map((point) => ({
...point,
timestamp:
typeof point.timestamp === 'string'
? new Date(point.timestamp).getTime()
: point.timestamp.getTime(),
}));
}, [data]);
// Format timestamp based on time range
const formatTimestamp = (timestamp: number): string => {
const date = new Date(timestamp);
switch (timeRange) {
case '1h':
case '6h':
return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
case '24h':
return date.toLocaleTimeString([], { hour: '2-digit', minute: '2-digit' });
case '7d':
return date.toLocaleDateString([], { weekday: 'short', hour: '2-digit' });
case '30d':
return date.toLocaleDateString([], { month: 'short', day: 'numeric' });
default:
return date.toLocaleTimeString();
}
};
if (isLoading) {
return (
<div
className="bg-white dark:bg-gray-800 rounded-lg shadow p-4"
data-testid="request-volume-chart"
>
<h3 className="text-lg font-semibold mb-4 text-gray-900 dark:text-white">
Request Volume
</h3>
<div
className="flex items-center justify-center bg-gray-100 dark:bg-gray-700 rounded animate-pulse"
style={{ height }}
>
<span className="text-gray-500 dark:text-gray-400">Loading chart...</span>
</div>
</div>
);
}
if (data.length === 0) {
return (
<div
className="bg-white dark:bg-gray-800 rounded-lg shadow p-4"
data-testid="request-volume-chart"
>
<h3 className="text-lg font-semibold mb-4 text-gray-900 dark:text-white">
Request Volume
</h3>
<div
className="flex items-center justify-center bg-gray-50 dark:bg-gray-700 rounded"
style={{ height }}
>
<span className="text-gray-500 dark:text-gray-400">No data available</span>
</div>
</div>
);
}
return (
<div
className="bg-white dark:bg-gray-800 rounded-lg shadow p-4"
data-testid="request-volume-chart"
>
<h3 className="text-lg font-semibold mb-4 text-gray-900 dark:text-white">
Request Volume ({timeRange})
</h3>
<ResponsiveContainer width="100%" height={height}>
<AreaChart data={chartData} margin={{ top: 5, right: 30, left: 20, bottom: 5 }}>
<CartesianGrid strokeDasharray="3 3" className="stroke-gray-200 dark:stroke-gray-700" />
<XAxis
dataKey="timestamp"
tickFormatter={formatTimestamp}
className="text-gray-600 dark:text-gray-400"
tick={{ fill: 'currentColor', fontSize: 12 }}
/>
<YAxis
tickFormatter={(value) => formatNumber(value)}
className="text-gray-600 dark:text-gray-400"
tick={{ fill: 'currentColor', fontSize: 12 }}
/>
<Tooltip content={<CustomTooltip />} />
<Legend />
<Area
type="monotone"
dataKey="successful"
name="Successful"
stackId={stacked ? 'stack' : undefined}
stroke={COLORS.successful.stroke}
fill={COLORS.successful.fill}
fillOpacity={0.6}
/>
<Area
type="monotone"
dataKey="clientErrors"
name="Client Errors (4xx)"
stackId={stacked ? 'stack' : undefined}
stroke={COLORS.clientErrors.stroke}
fill={COLORS.clientErrors.fill}
fillOpacity={0.6}
/>
<Area
type="monotone"
dataKey="serverErrors"
name="Server Errors (5xx)"
stackId={stacked ? 'stack' : undefined}
stroke={COLORS.serverErrors.stroke}
fill={COLORS.serverErrors.fill}
fillOpacity={0.6}
/>
</AreaChart>
</ResponsiveContainer>
</div>
);
}
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