Merge pull request #24523 from overleaf/jdt-prevent-bundle-dbl-buys

Redirect bundle purchases when users already have it

GitOrigin-RevId: d8e3c0256db08c08c2be24f38caef91fb26b90e8

services/web/app/src/Features/Subscription/FeaturesUpdater.js

@@ -197,6 +197,14 @@ async function doSyncFromV1(v1UserId) {
   return refreshFeatures(user._id, 'sync-v1')
 }
 
+async function hasFeaturesViaWritefull(userId) {
+  const user = await UserGetter.promises.getUser(userId, {
+    _id: 1,
+    writefull: 1,
+  })
+  return Boolean(user?.writefull?.isPremium)
+}
+
 module.exports = {
   featuresEpochIsCurrent,
   computeFeatures: callbackify(computeFeatures),
@@ -209,10 +217,12 @@ module.exports = {
     'featuresChanged',
   ]),
   scheduleRefreshFeatures: callbackify(scheduleRefreshFeatures),
+  hasFeaturesViaWritefull: callbackify(hasFeaturesViaWritefull),
   promises: {
     computeFeatures,
     refreshFeatures,
     scheduleRefreshFeatures,
     doSyncFromV1,
+    hasFeaturesViaWritefull,
   },
 }

services/web/app/src/Features/Subscription/RecurlyEntities.js

@@ -477,6 +477,22 @@ function isStandaloneAiAddOnPlanCode(planCode) {
   return STANDALONE_AI_ADD_ON_CODES.includes(planCode)
 }
 
+/**
+ * Returns whether subscription change will have have the ai bundle once the change is processed
+ *
+ * @param {RecurlySubscriptionChange} subscriptionChange The subscription change object coming from Recurly
+ *
+ * @return {boolean}
+ */
+function subscriptionChangeIsAiAssistUpgrade(subscriptionChange) {
+  return Boolean(
+    isStandaloneAiAddOnPlanCode(subscriptionChange.nextPlanCode) ||
+      subscriptionChange.nextAddOns?.some(
+        addOn => addOn.code === AI_ADD_ON_CODE
+      )
+  )
+}
+
 module.exports = {
   AI_ADD_ON_CODE,
   MEMBERS_LIMIT_ADD_ON_CODE,
@@ -493,5 +509,6 @@ module.exports = {
   RecurlyCoupon,
   RecurlyAccount,
   isStandaloneAiAddOnPlanCode,
+  subscriptionChangeIsAiAssistUpgrade,
   RecurlyImmediateCharge,
 }

services/web/app/src/Features/Subscription/SubscriptionController.js

@@ -24,6 +24,7 @@ const HttpErrorHandler = require('../Errors/HttpErrorHandler')
 const RecurlyClient = require('./RecurlyClient')
 const { AI_ADD_ON_CODE } = require('./RecurlyEntities')
 const PlansLocator = require('./PlansLocator')
+const RecurlyEntities = require('./RecurlyEntities')
 
 /**
  * @import { SubscriptionChangeDescription } from '../../../../types/subscription/subscription-change-preview'
@@ -45,7 +46,6 @@ function formatGroupPlansDataForDash() {
 
 async function userSubscriptionPage(req, res) {
   const user = SessionManager.getSessionUser(req.session)
-
   await SplitTestHandler.promises.getAssignment(req, res, 'pause-subscription')
 
   const groupPricingDiscount = await SplitTestHandler.promises.getAssignment(
@@ -321,13 +321,19 @@ async function previewAddonPurchase(req, res) {
   try {
     subscriptionChange =
       await SubscriptionHandler.promises.previewAddonPurchase(userId, addOnCode)
+
+    const hasBundleViaWritefull =
+      await FeaturesUpdater.promises.hasFeaturesViaWritefull(userId)
+    const isAiUpgrade =
+      RecurlyEntities.subscriptionChangeIsAiAssistUpgrade(subscriptionChange)
+    if (hasBundleViaWritefull && isAiUpgrade) {
+      return res.redirect(
+        '/user/subscription?redirect-reason=writefull-entitled'
+      )
+    }
   } catch (err) {
     if (err instanceof DuplicateAddOnError) {
-      return HttpErrorHandler.badRequest(
-        req,
-        res,
-        `Subscription already has add-on "${addOnCode}"`
-      )
+      return res.redirect('/user/subscription?redirect-reason=double-buy')
     }
     throw err
   }