59 lines
1.7 KiB
TypeScript
59 lines
1.7 KiB
TypeScript
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import _ from 'lodash'
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import { Contract } from '../../../common/contract'
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import { getPayouts } from '../../../common/payouts'
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import { Bet } from './bets'
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export function scoreCreators(contracts: Contract[], bets: Bet[][]) {
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const creatorScore = _.mapValues(
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_.groupBy(contracts, ({ creatorId }) => creatorId),
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(contracts) => _.sumBy(contracts, ({ pool }) => pool.YES + pool.NO)
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)
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return creatorScore
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}
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export function scoreTraders(contracts: Contract[], bets: Bet[][]) {
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const userScoresByContract = contracts.map((contract, index) =>
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scoreUsersByContract(contract, bets[index])
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)
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const userScores: { [userId: string]: number } = {}
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for (const scores of userScoresByContract) {
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for (const [userId, score] of Object.entries(scores)) {
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if (userScores[userId] === undefined) userScores[userId] = 0
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userScores[userId] += score
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}
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}
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return userScores
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}
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function scoreUsersByContract(contract: Contract, bets: Bet[]) {
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const { resolution } = contract
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const [closedBets, openBets] = _.partition(
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bets,
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(bet) => bet.isSold || bet.sale
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)
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const resolvePayouts = getPayouts(resolution ?? 'MKT', contract, openBets)
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const salePayouts = closedBets.map((bet) => {
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const { userId, sale } = bet
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return { userId, payout: sale ? sale.amount : 0 }
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})
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const investments = bets
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.filter((bet) => !bet.sale)
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.map((bet) => {
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const { userId, amount } = bet
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return { userId, payout: -amount }
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})
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const netPayouts = [...resolvePayouts, ...salePayouts, ...investments]
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const userScore = _.mapValues(
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_.groupBy(netPayouts, (payout) => payout.userId),
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(payouts) => _.sumBy(payouts, ({ payout }) => payout)
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)
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return userScore
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}
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