67 lines
2.1 KiB
TypeScript
67 lines
2.1 KiB
TypeScript
import { useMemo, useRef } from 'react'
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import { sortBy } from 'lodash'
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import { scaleTime, scaleLog, scaleLinear } from 'd3'
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import { Bet } from 'common/bet'
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import { getInitialProbability, getProbability } from 'common/calculate'
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import { PseudoNumericContract } from 'common/contract'
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import { NUMERIC_GRAPH_COLOR } from 'common/numeric-constants'
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import { useIsMobile } from 'web/hooks/use-is-mobile'
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import { MARGIN_X, MARGIN_Y, getDateRange } from '../helpers'
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import { SingleValueHistoryChart } from '../generic-charts'
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import { useElementWidth } from 'web/hooks/use-element-width'
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const getChartData = (
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contract: PseudoNumericContract,
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bets: Bet[],
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start: Date,
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end: Date
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) => {
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const { min, max } = contract
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const getY = (p: number) => p * (max - min) + min
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const sortedBets = sortBy(bets, (b) => b.createdTime)
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const startProb = getInitialProbability(contract)
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const endProb = getProbability(contract)
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return [
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[start, getY(startProb)] as const,
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...sortedBets.map(
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(b) => [new Date(b.createdTime), getY(b.probAfter)] as const
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),
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[end, getY(endProb)] as const,
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]
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}
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export const PseudoNumericContractChart = (props: {
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contract: PseudoNumericContract
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bets: Bet[]
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height?: number
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}) => {
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const { contract, bets } = props
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const [start, end] = useMemo(() => getDateRange(contract), [contract])
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const data = useMemo(
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() => getChartData(contract, bets, start, end),
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[contract, bets, start, end]
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)
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const isMobile = useIsMobile(800)
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const containerRef = useRef<HTMLDivElement>(null)
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const width = useElementWidth(containerRef) ?? 0
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const height = props.height ?? (isMobile ? 150 : 250)
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const scaleType = contract.isLogScale ? scaleLog : scaleLinear
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const xScale = scaleTime([start, end], [0, width - MARGIN_X])
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const yScale = scaleType([contract.min, contract.max], [height - MARGIN_Y, 0])
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return (
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<div ref={containerRef}>
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{width && (
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<SingleValueHistoryChart
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w={width}
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h={height}
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xScale={xScale}
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yScale={yScale}
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data={data}
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color={NUMERIC_GRAPH_COLOR}
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/>
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)}
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</div>
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)
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}
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