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

95 lines
2.8 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 { DAY_MS } from 'common/util/time'
import { useIsMobile } from 'web/hooks/use-is-mobile'
import {
TooltipProps,
MARGIN_X,
MARGIN_Y,
getDateRange,
getRightmostVisibleDate,
formatDateInRange,
formatPct,
} from '../helpers'
import { HistoryPoint, SingleValueHistoryChart } from '../generic-charts'
import { useElementWidth } from 'web/hooks/use-element-width'
import { Row } from 'web/components/layout/row'
import { Avatar } from 'web/components/avatar'
const getBetPoints = (bets: Bet[]) => {
return sortBy(bets, (b) => b.createdTime).map((b) => ({
x: new Date(b.createdTime),
y: b.probAfter,
obj: b,
}))
}
const BinaryChartTooltip = (props: TooltipProps<Date, HistoryPoint<Bet>>) => {
const { data, mouseX, xScale } = props
const [start, end] = xScale.domain()
const d = xScale.invert(mouseX)
return (
<Row className="items-center gap-2">
{data.obj && <Avatar size="xs" avatarUrl={data.obj.userAvatarUrl} />}
<span className="font-semibold">{formatDateInRange(d, start, end)}</span>
<span className="text-greyscale-6">{formatPct(data.y)}</span>
</Row>
)
}
export const BinaryContractChart = (props: {
contract: BinaryContract
bets: Bet[]
height?: number
onMouseOver?: (p: HistoryPoint<Bet> | undefined) => void
}) => {
const { contract, bets, onMouseOver } = props
const [start, end] = getDateRange(contract)
const startP = getInitialProbability(contract)
const endP = getProbability(contract)
const betPoints = useMemo(() => getBetPoints(bets), [bets])
const data = useMemo(() => {
return [
{ x: new Date(start), y: startP },
...betPoints,
{ x: new Date(end ?? Date.now() + DAY_MS), y: endP },
]
}, [start, startP, end, endP, betPoints])
const rightmostDate = getRightmostVisibleDate(
end,
last(betPoints)?.x?.getTime(),
Date.now()
)
const visibleRange = [start, rightmostDate]
const isMobile = useIsMobile(800)
const containerRef = useRef<HTMLDivElement>(null)
const width = useElementWidth(containerRef) ?? 0
const height = props.height ?? (isMobile ? 150 : 250)
const xScale = scaleTime(visibleRange, [0, width - MARGIN_X])
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"
onMouseOver={onMouseOver}
Tooltip={BinaryChartTooltip}
pct
/>
)}
</div>
)
}