umami/components/metrics/EventsChart.js

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import { useMemo } from 'react';
import { Loading } from 'react-basics';
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import { colord } from 'colord';
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import BarChart from './BarChart';
import { getDateArray, getDateLength } from 'lib/date';
import useApi from 'hooks/useApi';
import useDateRange from 'hooks/useDateRange';
import useTimezone from 'hooks/useTimezone';
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import usePageQuery from 'hooks/usePageQuery';
import { EVENT_COLORS } from 'lib/constants';
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export default function EventsChart({ websiteId, className, token }) {
const { get, useQuery } = useApi();
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const [{ startDate, endDate, unit, modified }] = useDateRange(websiteId);
const [timezone] = useTimezone();
const {
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query: { url, eventName },
} = usePageQuery();
const { data, isLoading } = useQuery(['events', { websiteId, modified, eventName }], () =>
get(`/websites/${websiteId}/events`, {
startAt: +startDate,
endAt: +endDate,
unit,
timezone,
url,
eventName,
token,
}),
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);
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const datasets = useMemo(() => {
if (!data) return [];
if (isLoading) return data;
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const map = data.reduce((obj, { x, t, y }) => {
if (!obj[x]) {
obj[x] = [];
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}
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obj[x].push({ t, y });
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return obj;
}, {});
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Object.keys(map).forEach(key => {
map[key] = getDateArray(map[key], startDate, endDate, unit);
});
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return Object.keys(map).map((key, index) => {
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const color = colord(EVENT_COLORS[index % EVENT_COLORS.length]);
return {
label: key,
data: map[key],
lineTension: 0,
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backgroundColor: color.alpha(0.6).toRgbString(),
borderColor: color.alpha(0.7).toRgbString(),
borderWidth: 1,
};
});
}, [data, isLoading]);
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function handleUpdate(chart) {
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chart.data.datasets = datasets;
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chart.update();
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}
if (isLoading) {
return <Loading variant="dots" />;
}
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if (!data) {
return null;
}
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return (
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<BarChart
chartId={`events-${websiteId}`}
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className={className}
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datasets={datasets}
unit={unit}
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height={300}
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records={getDateLength(startDate, endDate, unit)}
onUpdate={handleUpdate}
loading={isLoading}
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stacked
/>
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);
}