[web] switch migrations for fixing dates to batchedUpdate (#26582)

* [web] switch migration for fixing confirmedAt dates to batchedUpdate

* [web] switch migration for fixing assignedAt dates to batchedUpdate

* [web] make eslint happy

GitOrigin-RevId: d898d28dc2aa1084e8d3af20b98f49e3fda8a1c6

services/web/migrations/20210726083523_convert_confirmedAt_strings_to_dates.mjs

@@ -1,12 +1,35 @@
-import updateStringDates from '../scripts/confirmed_at_to_dates.mjs'
+import { db } from '../app/src/infrastructure/mongodb.js'
+import { batchedUpdate } from '@overleaf/mongo-utils/batchedUpdate.js'
 
 const tags = ['saas']
 
-const migrate = async client => {
-  await updateStringDates()
+const migrate = async () => {
+  await batchedUpdate(
+    db.users,
+    { 'emails.confirmedAt': { $type: 'string' } },
+    async function (batch) {
+      for (const user of batch) {
+        for (const email of user.emails) {
+          if (typeof email.confirmedAt === 'string') {
+            await db.users.updateOne(
+              { _id: user._id, 'emails.email': email.email },
+              {
+                $set: {
+                  'emails.$.confirmedAt': new Date(
+                    email.confirmedAt.replace(/ UTC$/, '')
+                  ),
+                },
+              }
+            )
+          }
+        }
+      }
+    },
+    { emails: 1 }
+  )
 }
 
-const rollback = async client => {
+const rollback = async () => {
   /* nothing to do */
 }
 

services/web/migrations/20210726083523_convert_split_tests_assigned_at_strings_to_dates.mjs

@@ -1,12 +1,29 @@
-import updateStringDates from '../scripts/split_tests_assigned_at_to_dates.mjs'
+import { db } from '../app/src/infrastructure/mongodb.js'
+import { batchedUpdate } from '@overleaf/mongo-utils/batchedUpdate.js'
 
 const tags = ['saas']
 
-const migrate = async client => {
-  await updateStringDates()
+const migrate = async () => {
+  await batchedUpdate(
+    db.users,
+    { splitTests: { $exists: true } },
+    async function (batch) {
+      for (const user of batch) {
+        const splitTests = user.splitTests
+        for (const splitTest of Object.values(user.splitTests)) {
+          for (const variant of splitTest) {
+            variant.assignedAt = new Date(variant.assignedAt)
+          }
+        }
+
+        await db.users.updateOne({ _id: user._id }, { $set: { splitTests } })
+      }
+    },
+    { splitTests: 1 }
+  )
 }
 
-const rollback = async client => {
+const rollback = async () => {
   /* nothing to do */
 }