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umami/components/metrics/EventsChart.js
2020-08-31 15:02:32 -07:00

92 lines
1.9 KiB
JavaScript

import React, { useMemo } from 'react';
import tinycolor from 'tinycolor2';
import BarChart from './BarChart';
import { getTimezone, getDateArray, getDateLength } from 'lib/date';
import useFetch from 'hooks/useFetch';
import { useDateRange } from 'hooks/useDateRange';
const COLORS = [
'#2680eb',
'#9256d9',
'#44b556',
'#e68619',
'#e34850',
'#1b959a',
'#d83790',
'#85d044',
];
export default function EventsChart({ websiteId }) {
const dateRange = useDateRange(websiteId);
const { startDate, endDate, unit, modified } = dateRange;
const { data } = useFetch(
`/api/website/${websiteId}/events`,
{
start_at: +startDate,
end_at: +endDate,
unit,
tz: getTimezone(),
},
{ update: [modified] },
);
const datasets = useMemo(() => {
if (!data) return [];
const map = data.reduce((obj, { x, t, y }) => {
if (!obj[x]) {
obj[x] = [];
}
obj[x].push({ t, y });
return obj;
}, {});
Object.keys(map).forEach(key => {
map[key] = getDateArray(map[key], startDate, endDate, unit);
});
return Object.keys(map).map((key, index) => {
const color = tinycolor(COLORS[index]);
return {
label: key,
data: map[key],
lineTension: 0,
backgroundColor: color.setAlpha(0.4).toRgbString(),
borderColor: color.setAlpha(0.5).toRgbString(),
borderWidth: 1,
};
});
}, [data]);
function handleCreate(options) {
const legend = {
position: 'bottom',
};
options.legend = legend;
}
function handleUpdate(chart) {
chart.data.datasets = datasets;
chart.update();
}
if (!data) {
return null;
}
return (
<BarChart
chartId={`events-${websiteId}`}
datasets={datasets}
unit={unit}
records={getDateLength(startDate, endDate, unit)}
onCreate={handleCreate}
onUpdate={handleUpdate}
stacked
/>
);
}