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

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import * as functions from 'firebase-functions'
import { getUser } from './utils'
import { createNotification } from './create-notification'
import { Contract } from '../../common/contract'
export const onUpdateContract = functions.firestore
.document('contracts/{contractId}')
.onUpdate(async (change, context) => {
const contract = change.after.data() as Contract
const { eventId } = context
const contractUpdater = await getUser(contract.creatorId)
if (!contractUpdater) throw new Error('Could not find contract updater')
const previousValue = change.before.data() as Contract
if (previousValue.isResolved !== contract.isResolved) {
await createNotification(
contract.id,
'contract',
'resolved',
contract,
contractUpdater,
eventId
)
} else if (
previousValue.closeTime !== contract.closeTime ||
previousValue.description !== contract.description
) {
await createNotification(
contract.id,
'contract',
'updated',
contract,
contractUpdater,
eventId
)
}
})