owncast/web/components/chart.tsx

99 lines
1.9 KiB
TypeScript

import ChartJs from 'chart.js/auto';
import Chartkick from 'chartkick';
import format from 'date-fns/format';
import { LineChart } from 'react-chartkick';
// from https://github.com/ankane/chartkick.js/blob/master/chart.js/chart.esm.js
Chartkick.use(ChartJs);
interface TimedValue {
time: Date;
value: number;
}
interface ChartProps {
data?: TimedValue[];
title?: string;
color: string;
unit: string;
yFlipped?: boolean;
yLogarithmic?: boolean;
dataCollections?: any[];
}
function createGraphDataset(dataArray) {
const dataValues = {};
dataArray.forEach(item => {
const dateObject = new Date(item.time);
const dateString = format(dateObject, 'H:mma');
dataValues[dateString] = item.value;
});
return dataValues;
}
export default function Chart({
data,
title,
color,
unit,
dataCollections,
yFlipped,
yLogarithmic,
}: ChartProps) {
const renderData = [];
if (data && data.length > 0) {
renderData.push({
name: title,
color,
data: createGraphDataset(data),
});
}
dataCollections.forEach(collection => {
renderData.push({
name: collection.name,
data: createGraphDataset(collection.data),
color: collection.color,
dataset: collection.options,
});
});
// ChartJs.defaults.scales.linear.reverse = true;
const options = {
scales: {
y: { reverse: false, type: 'linear' },
x: {
type: 'time',
},
},
};
options.scales.y.reverse = yFlipped;
options.scales.y.type = yLogarithmic ? 'logarithmic' : 'linear';
return (
<div className="line-chart-container">
<LineChart
xtitle="Time"
ytitle={title}
suffix={unit}
legend="bottom"
color={color}
data={renderData}
download={title}
library={options}
/>
</div>
);
}
Chart.defaultProps = {
dataCollections: [],
data: [],
title: '',
yFlipped: false,
yLogarithmic: false,
};