58 lines
1.8 KiB
TypeScript
58 lines
1.8 KiB
TypeScript
import { useMemo } from 'react';
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import { convertToBarData } from './graph-utils';
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import { chartDefaults } from './graph-config';
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import { GraphData, Props, YAxisData } from './graph-types';
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interface useGraphDataInterface {
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xValues: Array<string>;
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barData: {
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data: {
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value: number;
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}[];
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svg: {
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fill: string;
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};
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}[];
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yAxisLeftLabels: YAxisData;
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yAxisRightLabels: YAxisData;
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defaultProps: Partial<Props>;
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}
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// this version assumes string values for X, this isn't necessarily the case
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// convertToBarData is specifically tailored to bar/group bar graphs
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// ultimately this component could be used by any x & y axis graph types (line/bar/scatter)
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export const useGraphData = (graphData: GraphData, props: Partial<Props>): useGraphDataInterface => {
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const { yAxisProps = {}, ...otherProps } = props;
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const defaultProps = {
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...chartDefaults,
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...otherProps,
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// assign default values for yAxisProps + spread to override with values coming from props
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yAxisProps: {
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maxLeftYAxisValue: Math.max(...(graphData.yValues[0]?.values ?? [0])),
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maxRightYAxisValue:
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graphData.yValues.length > 1 ? Math.max(...graphData.yValues[1]?.values) : undefined,
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formatRightYAxisLabel: yAxisProps.formatRightYAxisLabel,
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formatLeftYAxisLabel: yAxisProps.formatLeftYAxisLabel,
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selectedLeftYAxisLabel: graphData.yValues[0]?.key,
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selectedRightYAxisLabel: graphData.yValues[1]?.key,
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...yAxisProps
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}
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};
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const { barData, yAxisLeftLabels, yAxisRightLabels, xValues } = useMemo(
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() => convertToBarData(graphData, defaultProps.yAxisProps),
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[graphData, defaultProps.yAxisProps]
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);
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return {
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xValues,
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barData,
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yAxisLeftLabels,
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yAxisRightLabels,
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defaultProps
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};
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};
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