manifold/functions/src/on-update-contract.ts

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import * as functions from 'firebase-functions'
import { getUser, getValues, log } from './utils'
import { createCommentOrAnswerOrUpdatedContractNotification } from './create-notification'
import { Contract } from '../../common/contract'
import { Txn } from '../../common/txn'
import { partition, sortBy } from 'lodash'
import { runTxn, TxnData } from './transact'
import * as admin from 'firebase-admin'
export const onUpdateContract = functions.firestore
.document('contracts/{contractId}')
.onUpdate(async (change, context) => {
const contract = change.after.data() as Contract
const previousContract = change.before.data() as Contract
const { eventId } = context
const { openCommentBounties, closeTime, question } = contract
if (
!previousContract.isResolved &&
contract.isResolved &&
(openCommentBounties ?? 0) > 0
) {
await handleUnusedCommentBountyRefunds(contract)
// No need to notify users of resolution, that's handled in resolve-market
return
}
if (
previousContract.closeTime !== closeTime ||
previousContract.question !== question
) {
await handleUpdatedCloseTime(previousContract, contract, eventId)
}
})
async function handleUpdatedCloseTime(
previousContract: Contract,
contract: Contract,
eventId: string
) {
const contractUpdater = await getUser(contract.creatorId)
if (!contractUpdater) throw new Error('Could not find contract updater')
let sourceText = ''
if (previousContract.closeTime !== contract.closeTime && contract.closeTime) {
sourceText = contract.closeTime.toString()
} else if (previousContract.question !== contract.question) {
sourceText = contract.question
}
await createCommentOrAnswerOrUpdatedContractNotification(
contract.id,
'contract',
'updated',
contractUpdater,
eventId,
sourceText,
contract
)
}
async function handleUnusedCommentBountyRefunds(contract: Contract) {
const outstandingCommentBounties = await getValues<Txn>(
firestore.collection('txns').where('category', '==', 'COMMENT_BOUNTY')
)
const commentBountiesOnThisContract = sortBy(
outstandingCommentBounties.filter(
(bounty) => bounty.data?.contractId === contract.id
),
(bounty) => bounty.createdTime
)
const [toBank, fromBank] = partition(
commentBountiesOnThisContract,
(bounty) => bounty.toType === 'BANK'
)
if (toBank.length <= fromBank.length) return
await firestore
.collection('contracts')
.doc(contract.id)
.update({ openCommentBounties: 0 })
const refunds = toBank.slice(fromBank.length)
await Promise.all(
refunds.map(async (extraBountyTxn) => {
const result = await firestore.runTransaction(async (trans) => {
const bonusTxn: TxnData = {
fromId: extraBountyTxn.toId,
fromType: 'BANK',
toId: extraBountyTxn.fromId,
toType: 'USER',
amount: extraBountyTxn.amount,
token: 'M$',
category: 'REFUND_COMMENT_BOUNTY',
data: {
contractId: contract.id,
},
}
return await runTxn(trans, bonusTxn)
})
if (result.status != 'success' || !result.txn) {
log(
`Couldn't refund bonus for user: ${extraBountyTxn.fromId} - status:`,
result.status
)
log('message:', result.message)
} else {
log(
`Refund bonus txn for user: ${extraBountyTxn.fromId} completed:`,
result.txn?.id
)
}
})
)
}
const firestore = admin.firestore()