manifold/functions/src/on-create-txn.ts
2022-07-07 17:23:13 -06:00

82 lines
1.9 KiB
TypeScript

import * as functions from 'firebase-functions'
import { TipTxn, Txn } from 'common/txn'
import { getContract, getGroup, getUser, log } from './utils'
import { createTipNotification } from './create-notification'
import * as admin from 'firebase-admin'
import { Comment } from 'common/comment'
const firestore = admin.firestore()
export const onCreateTxn = functions.firestore
.document('txns/{txnId}')
.onCreate(async (change, context) => {
const txn = change.data() as Txn
const { eventId } = context
if (txn.category === 'TIP') {
await handleTipTxn(txn, eventId)
}
})
async function handleTipTxn(txn: TipTxn, eventId: string) {
// get user sending and receiving tip
const [sender, receiver] = await Promise.all([
getUser(txn.fromId),
getUser(txn.toId),
])
if (!sender || !receiver) {
log('Could not find corresponding users')
return
}
if (!txn.data?.commentId) {
log('No comment id in tip txn.data')
return
}
let contract = undefined
let group = undefined
let commentSnapshot = undefined
if (txn.data.contractId) {
contract = await getContract(txn.data.contractId)
if (!contract) {
log('Could not find contract')
return
}
commentSnapshot = await firestore
.collection('contracts')
.doc(contract.id)
.collection('comments')
.doc(txn.data.commentId)
.get()
} else if (txn.data.groupId) {
group = await getGroup(txn.data.groupId)
if (!group) {
log('Could not find group')
return
}
commentSnapshot = await firestore
.collection('groups')
.doc(group.id)
.collection('comments')
.doc(txn.data.commentId)
.get()
}
if (!commentSnapshot || !commentSnapshot.exists) {
log('Could not find comment')
return
}
const comment = commentSnapshot.data() as Comment
await createTipNotification(
sender,
receiver,
txn,
eventId,
comment.id,
contract,
group
)
}