Files
stats/apps/start/src/components/pages/page-sparkline.tsx
Carl-Gerhard Lindesvärd df0258f532 comments
2026-03-09 14:20:15 +01:00

123 lines
3.1 KiB
TypeScript

import { useQuery } from '@tanstack/react-query';
import { Tooltiper } from '../ui/tooltip';
import { LazyComponent } from '@/components/lazy-component';
import { useOverviewOptions } from '@/components/overview/useOverviewOptions';
import { useTRPC } from '@/integrations/trpc/react';
interface SparklineBarsProps {
data: { date: string; pageviews: number }[];
}
const defaultGap = 1;
const height = 24;
const width = 100;
function getTrendDirection(data: { pageviews: number }[]): '↑' | '↓' | '→' {
const n = data.length;
if (n < 3) {
return '→';
}
const third = Math.max(1, Math.floor(n / 3));
const firstAvg =
data.slice(0, third).reduce((s, d) => s + d.pageviews, 0) / third;
const lastAvg =
data.slice(n - third).reduce((s, d) => s + d.pageviews, 0) / third;
const threshold = firstAvg * 0.05;
if (lastAvg - firstAvg > threshold) {
return '↑';
}
if (firstAvg - lastAvg > threshold) {
return '↓';
}
return '→';
}
function SparklineBars({ data }: SparklineBarsProps) {
if (!data.length) {
return <div style={{ height, width }} />;
}
const max = Math.max(...data.map((d) => d.pageviews), 1);
const total = data.length;
// Compute bar width to fit SVG width; reduce gap if needed so barW >= 1 when possible
let gap = defaultGap;
let barW = Math.floor((width - gap * (total - 1)) / total);
if (barW < 1 && total > 1) {
gap = 0;
barW = Math.floor((width - gap * (total - 1)) / total);
}
if (barW < 1) {
barW = 1;
}
const trend = getTrendDirection(data);
const trendColor =
trend === '↑'
? 'text-emerald-500'
: trend === '↓'
? 'text-red-500'
: 'text-muted-foreground';
return (
<div className="flex items-center gap-1.5">
<svg className="shrink-0" height={height} width={width}>
{data.map((d, i) => {
const barH = Math.max(
2,
Math.round((d.pageviews / max) * (height * 0.8))
);
return (
<rect
className="fill-chart-0"
height={barH}
key={d.date}
rx="1"
width={barW}
x={i * (barW + gap)}
y={height - barH}
/>
);
})}
</svg>
<Tooltiper
content={
trend === '↑'
? 'Upward trend'
: trend === '↓'
? 'Downward trend'
: 'Stable trend'
}
>
<span className={`shrink-0 font-medium text-xs ${trendColor}`}>
{trend}
</span>
</Tooltiper>
</div>
);
}
interface PageSparklineProps {
projectId: string;
origin: string;
path: string;
}
export function PageSparkline({ projectId, origin, path }: PageSparklineProps) {
const { range, interval } = useOverviewOptions();
const trpc = useTRPC();
const query = useQuery(
trpc.event.pageTimeseries.queryOptions({
projectId,
range,
interval,
origin,
path,
})
);
return (
<LazyComponent fallback={<div style={{ height, width }} />}>
<SparklineBars data={query.data ?? []} />
</LazyComponent>
);
}