66 lines
2.0 KiB
TypeScript
66 lines
2.0 KiB
TypeScript
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import { useMemo, useRef } from 'react'
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import { sortBy } from 'lodash'
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import { scaleTime, 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 { BinaryContract } from 'common/contract'
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import { useIsMobile } from 'web/hooks/use-is-mobile'
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import { MARGIN_X, MARGIN_Y, MAX_DATE, 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 getBetPoints = (bets: Bet[]) => {
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return sortBy(bets, (b) => b.createdTime).map(
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(b) => [new Date(b.createdTime), b.probAfter] as const
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)
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}
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const getStartPoint = (contract: BinaryContract, start: Date) => {
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return [start, getInitialProbability(contract)] as const
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}
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const getEndPoint = (contract: BinaryContract, end: Date) => {
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return [end, getProbability(contract)] as const
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}
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export const BinaryContractChart = (props: {
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contract: BinaryContract
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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 [contractStart, contractEnd] = getDateRange(contract)
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const betPoints = useMemo(() => getBetPoints(bets), [bets])
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const data = useMemo(
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() => [
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getStartPoint(contract, contractStart),
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...betPoints,
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getEndPoint(contract, contractEnd ?? MAX_DATE),
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],
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[contract, betPoints, contractStart, contractEnd]
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)
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const visibleRange = [contractStart, contractEnd ?? Date.now()]
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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 ? 250 : 350)
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const xScale = scaleTime(visibleRange, [0, width - MARGIN_X])
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const yScale = scaleLinear([0, 1], [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="#11b981"
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pct
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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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