Massive/Chart.tsx

import { useTheme } from '@react-navigation/native'
import * as shape from 'd3-shape'
import { View } from 'react-native'
import { Grid, LineChart, XAxis, YAxis } from 'react-native-svg-charts'
import { CombinedDarkTheme, CombinedDefaultTheme } from './App'
import { MARGIN, PADDING } from './constants'
import GymSet from './gym-set'
import useDark from './use-dark'

export default function Chart({
  yData,
  xFormat,
  xData,
  yFormat,
}: {
  yData: number[]
  xData: GymSet[]
  xFormat: (value: any, index: number) => string
  yFormat: (value: any) => string
}) {
  const { colors } = useTheme()
  const dark = useDark()
  const axesSvg = {
    fontSize: 10,
    fill: dark
      ? CombinedDarkTheme.colors.text
      : CombinedDefaultTheme.colors.text,
  }
  const verticalContentInset = { top: 10, bottom: 10 }
  const xAxisHeight = 30

  return (
    <>
      <View
        style={{
          height: 300,
          padding: PADDING,
          flexDirection: 'row',
        }}
      >
        <YAxis
          data={yData}
          style={{ marginBottom: xAxisHeight }}
          contentInset={verticalContentInset}
          svg={axesSvg}
          formatLabel={yFormat}
        />
        <View style={{ flex: 1, marginLeft: MARGIN }}>
          <LineChart
            style={{ flex: 1 }}
            data={yData}
            contentInset={verticalContentInset}
            curve={shape.curveBasis}
            svg={{
              stroke: colors.primary,
            }}
          >
            <Grid />
          </LineChart>
          <XAxis
            data={xData}
            formatLabel={xFormat}
            contentInset={{ left: 15, right: 16 }}
            svg={axesSvg}
          />
        </View>
      </View>
    </>
  )
}