manifold/web/lib/firebase/bets.ts

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import {
collection,
collectionGroup,
query,
onSnapshot,
where,
} from 'firebase/firestore'
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import { db } from './init'
export type Bet = {
id: string
userId: string
contractId: string
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amount: number // Amount of bet
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outcome: 'YES' | 'NO' // Chosen outcome
dpmWeight: number // Dynamic Parimutuel weight
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probBefore: number
probAverage: number
probAfter: number
createdTime: number
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}
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function getBetsCollection(contractId: string) {
return collection(db, 'contracts', contractId, 'bets')
}
export function listenForBets(
contractId: string,
setBets: (bets: Bet[]) => void
) {
return onSnapshot(getBetsCollection(contractId), (snap) => {
const bets = snap.docs.map((doc) => doc.data() as Bet)
bets.sort((bet1, bet2) => bet1.createdTime - bet2.createdTime)
setBets(bets)
})
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}
export function listenForUserBets(
userId: string,
setBets: (bets: Bet[]) => void
) {
const userQuery = query(
collectionGroup(db, 'bets'),
where('userId', '==', userId)
)
return onSnapshot(userQuery, (snap) => {
const bets = snap.docs.map((doc) => doc.data() as Bet)
bets.sort((bet1, bet2) => bet1.createdTime - bet2.createdTime)
setBets(bets)
})
}