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import React from 'react';
import PropTypes from 'prop-types';
import api from 'mastodon/api';
import { FormattedNumber } from 'react-intl';
import { Sparklines, SparklinesCurve } from 'react-sparklines';
import classNames from 'classnames';
import Skeleton from 'mastodon/components/skeleton';
const percIncrease = (a, b) => {
let percent;
if (b !== 0) {
if (a !== 0) {
percent = (b - a) / a;
} else {
percent = 1;
}
} else if (b === 0 && a === 0) {
percent = 0;
} else {
percent = - 1;
}
return percent;
};
export default class Counter extends React.PureComponent {
static propTypes = {
measure: PropTypes.string.isRequired,
start_at: PropTypes.string.isRequired,
end_at: PropTypes.string.isRequired,
label: PropTypes.string.isRequired,
href: PropTypes.string,
params: PropTypes.object,
target: PropTypes.string,
};
state = {
loading: true,
data: null,
};
componentDidMount () {
const { measure, start_at, end_at, params } = this.props;
api().post('/api/v1/admin/measures', { keys: [measure], start_at, end_at, [measure]: params }).then(res => {
this.setState({
loading: false,
data: res.data,
});
}).catch(err => {
console.error(err);
});
}
render () {
const { label, href, target } = this.props;
const { loading, data } = this.state;
let content;
if (loading) {
content = (
<React.Fragment>
<span className='sparkline__value__total'><Skeleton width={43} /></span>
<span className='sparkline__value__change'><Skeleton width={43} /></span>
</React.Fragment>
);
} else {
const measure = data[0];
const percentChange = measure.previous_total && percIncrease(measure.previous_total * 1, measure.total * 1);
content = (
<React.Fragment>
<span className='sparkline__value__total'>{measure.human_value || <FormattedNumber value={measure.total} />}</span>
{measure.previous_total && (<span className={classNames('sparkline__value__change', { positive: percentChange > 0, negative: percentChange < 0 })}>{percentChange > 0 && '+'}<FormattedNumber value={percentChange} style='percent' /></span>)}
</React.Fragment>
);
}
const inner = (
<React.Fragment>
<div className='sparkline__value'>
{content}
</div>
<div className='sparkline__label'>
{label}
</div>
<div className='sparkline__graph'>
{!loading && (
<Sparklines width={259} height={55} data={data[0].data.map(x => x.value * 1)}>
<SparklinesCurve />
</Sparklines>
)}
</div>
</React.Fragment>
);
if (href) {
return (
<a href={href} className='sparkline' target={target}>
{inner}
</a>
);
} else {
return (
<div className='sparkline'>
{inner}
</div>
);
}
}
}
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