manifold/functions/src/on-view.ts
James Grugett 06b7e49e98
[In progress] Server-side feed computation (#106)
* Store view counts & last viewed time

* Schedule updating user recommendations. Compute using tf-idf.

* Update contract's lastBetTime and lastCommentTime on new bets and comments.

* Remove contract's lastUpdatedTime

* Remove folds activity feed

* Implement getFeed cloud function

* Hook up client to use getFeed

* Script to cache viewCounts and lastViewTime

* Batched wait all userRecommendations

* Cache view script runs on all users

* Update user feed each hour and get feed from cache doc.

* Delete view cache script

* Update feed script

* Tweak feed algorithm

* Compute recommendation scores from updateUserFeed

* Disable lastViewedScore factor

* Update lastCommentTime script

* Comment out console.log

* Fix timeout issue by calling new cloud functions with part of the work.

* Listen for contract updates to feed.

* Handle new user: use default feed of top markets this week

* Track lastUpdatedTime

* Tweak logic of calling cloud functions in batches

* Tweak cloud function batching
2022-05-01 11:36:54 -05:00

25 lines
737 B
TypeScript

import * as functions from 'firebase-functions'
import * as admin from 'firebase-admin'
import { View } from '../../common/tracking'
const firestore = admin.firestore()
export const onView = functions.firestore
.document('private-users/{userId}/views/{viewId}')
.onCreate(async (snapshot, context) => {
const { userId } = context.params
const { contractId, timestamp } = snapshot.data() as View
await firestore
.doc(`private-users/${userId}/cache/viewCounts`)
.set(
{ [contractId]: admin.firestore.FieldValue.increment(1) },
{ merge: true }
)
await firestore
.doc(`private-users/${userId}/cache/lastViewTime`)
.set({ [contractId]: timestamp }, { merge: true })
})