manifold/web/components/charts/contract/binary.tsx

72 lines
2.0 KiB
TypeScript

import { useMemo, useRef } from 'react'
import { last, sortBy } from 'lodash'
import { scaleTime, scaleLinear } from 'd3-scale'
import { Bet } from 'common/bet'
import { getProbability, getInitialProbability } from 'common/calculate'
import { BinaryContract } from 'common/contract'
import { useIsMobile } from 'web/hooks/use-is-mobile'
import {
MARGIN_X,
MARGIN_Y,
MAX_DATE,
getDateRange,
getRightmostVisibleDate,
} from '../helpers'
import { SingleValueHistoryChart } from '../generic-charts'
import { useElementWidth } from 'web/hooks/use-element-width'
const getBetPoints = (bets: Bet[]) => {
return sortBy(bets, (b) => b.createdTime).map(
(b) => [new Date(b.createdTime), b.probAfter] as const
)
}
export const BinaryContractChart = (props: {
contract: BinaryContract
bets: Bet[]
height?: number
}) => {
const { contract, bets } = props
const [startDate, endDate] = getDateRange(contract)
const startP = getInitialProbability(contract)
const endP = getProbability(contract)
const betPoints = useMemo(() => getBetPoints(bets), [bets])
const data = useMemo(
() => [
[startDate, startP] as const,
...betPoints,
[endDate ?? MAX_DATE, endP] as const,
],
[startDate, startP, endDate, endP, betPoints]
)
const rightmostDate = getRightmostVisibleDate(
endDate,
last(betPoints)?.[0],
new Date(Date.now())
)
const visibleRange = [startDate, rightmostDate]
const isMobile = useIsMobile(800)
const containerRef = useRef<HTMLDivElement>(null)
const width = useElementWidth(containerRef) ?? 0
const height = props.height ?? (isMobile ? 250 : 350)
const xScale = scaleTime(visibleRange, [0, width - MARGIN_X]).clamp(true)
const yScale = scaleLinear([0, 1], [height - MARGIN_Y, 0])
return (
<div ref={containerRef}>
{width > 0 && (
<SingleValueHistoryChart
w={width}
h={height}
xScale={xScale}
yScale={yScale}
data={data}
color="#11b981"
pct
/>
)}
</div>
)
}