don't use mailgun scheduling

common/user.ts

@@ -45,6 +45,7 @@ export const STARTING_BALANCE = ENV_CONFIG.startingBalance ?? 1000
 // for sus users, i.e. multiple sign ups for same person
 export const SUS_STARTING_BALANCE = ENV_CONFIG.startingBalance ?? 10
 export const REFERRAL_AMOUNT = 500
+
 export type PrivateUser = {
   id: string // same as User.id
   username: string // denormalized from User
@@ -54,6 +55,7 @@ export type PrivateUser = {
   unsubscribedFromCommentEmails?: boolean
   unsubscribedFromAnswerEmails?: boolean
   unsubscribedFromGenericEmails?: boolean
+  manaBonusEmailSent?: boolean
   initialDeviceToken?: string
   initialIpAddress?: string
   apiKey?: string

functions/src/create-user.ts

@@ -1,5 +1,7 @@
 import * as admin from 'firebase-admin'
 import { z } from 'zod'
+import { uniq } from 'lodash'
+
 import {
   MANIFOLD_AVATAR_URL,
   MANIFOLD_USERNAME,
@@ -14,7 +16,7 @@ import {
   cleanDisplayName,
   cleanUsername,
 } from '../../common/util/clean-username'
-import { sendOneWeekBonusEmail, sendWelcomeEmail } from './emails'
+import { sendWelcomeEmail } from './emails'
 import { isWhitelisted } from '../../common/envs/constants'
 import {
   CATEGORIES_GROUP_SLUG_POSTFIX,
@@ -24,7 +26,6 @@ import {
 import { track } from './analytics'
 import { APIError, newEndpoint, validate } from './api'
 import { Group, NEW_USER_GROUP_SLUGS } from '../../common/group'
-import { uniq } from 'lodash'
 import {
   DEV_HOUSE_LIQUIDITY_PROVIDER_ID,
   HOUSE_LIQUIDITY_PROVIDER_ID,
@@ -97,7 +98,6 @@ export const createuser = newEndpoint(opts, async (req, auth) => {
 
   await addUserToDefaultGroups(user)
   await sendWelcomeEmail(user, privateUser)
-  await sendOneWeekBonusEmail(user, privateUser)
   await track(auth.uid, 'create user', { username }, { ip: req.ip })
 
   return user

functions/src/emails.ts

@@ -1,5 +1,3 @@
-import * as dayjs from 'dayjs'
-
 import { DOMAIN } from '../../common/envs/constants'
 import { Answer } from '../../common/answer'
 import { Bet } from '../../common/bet'
@@ -184,11 +182,9 @@ export const sendOneWeekBonusEmail = async (
   const emailType = 'generic'
   const unsubscribeLink = `${UNSUBSCRIBE_ENDPOINT}?id=${userId}&type=${emailType}`
 
-  const oneWeek = dayjs().add(1, 'week').toString()
-
   await sendTemplateEmail(
     privateUser.email,
-    'Manifold one week anniversary gift',
+    'Manifold Markets one week anniversary gift',
     'one-week',
     {
       name: firstName,
@@ -197,7 +193,6 @@ export const sendOneWeekBonusEmail = async (
     },
     {
       from: 'David from Manifold <david@manifold.markets>',
-      'o:deliverytime': oneWeek,
     }
   )
 }

functions/src/index.ts

@@ -41,3 +41,4 @@ export * from './create-group'
 export * from './resolve-market'
 export * from './unsubscribe'
 export * from './stripe'
+export * from './mana-bonus-email'

functions/src/mana-bonus-email.ts

@@ -0,0 +1,42 @@
+import * as functions from 'firebase-functions'
+import * as admin from 'firebase-admin'
+import * as dayjs from 'dayjs'
+
+import { getPrivateUser } from './utils'
+import { sendOneWeekBonusEmail } from './emails'
+import { User } from 'common/user'
+
+export const manabonusemail = functions
+  .runWith({ secrets: ['MAILGUN_KEY'] })
+  .pubsub.schedule('0 9 * * 1-7')
+  .onRun(async () => {
+    await sendOneWeekEmails()
+  })
+
+const firestore = admin.firestore()
+
+async function sendOneWeekEmails() {
+  const oneWeekAgo = dayjs().subtract(1, 'week').valueOf()
+  const twoWeekAgo = dayjs().subtract(2, 'weeks').valueOf()
+
+  const userDocs = await firestore
+    .collection('users')
+    .where('createdTime', '<=', oneWeekAgo)
+    .get()
+
+  for (const user of userDocs.docs.map((d) => d.data() as User)) {
+    if (user.createdTime < twoWeekAgo) continue
+
+    const privateUser = await getPrivateUser(user.id)
+    if (!privateUser || privateUser.manaBonusEmailSent) continue
+
+    await firestore
+      .collection('private-users')
+      .doc(user.id)
+      .update({ manaBonusEmailSent: true })
+
+    console.log('sending m$ bonus email to', user.username)
+    await sendOneWeekBonusEmail(user, privateUser)
+    return
+  }
+}