PROD : OUT-4000 | Filter out email notifications according to iu notification preference

src/app/api/notification/iuEmailPreference.test.ts

@@ -0,0 +1,46 @@
+import { InternalUserNotificationSettings } from '@/types/common'
+import { disabledEmailSettingIds } from './iuEmailPreference'
+
+const settings = (overrides: Partial<InternalUserNotificationSettings> = {}): InternalUserNotificationSettings => ({
+  emailSettings: 'active',
+  notifyAbout: {},
+  ...overrides,
+})
+
+describe('disabledEmailSettingIds', () => {
+  it('collects ids only for categories with email disabled', () => {
+    const result = disabledEmailSettingIds(
+      settings({
+        notifyAbout: {
+          newCommentOnATask: { disableEmail: true, notificationSettingId: 'setting_comment' },
+          newTaskAssigned: { disableEmail: false, notificationSettingId: 'setting_assigned' },
+          taskCompleted: { disableEmail: true, notificationSettingId: 'setting_completed' },
+        },
+      }),
+    )
+
+    expect(result).toEqual(new Set(['setting_comment', 'setting_completed']))
+  })
+
+  it('ignores platform categories without a notificationSettingId', () => {
+    const result = disabledEmailSettingIds(
+      settings({
+        notifyAbout: {
+          newMessages: { disableEmail: true },
+          newCommentOnATask: { disableEmail: true, notificationSettingId: 'setting_comment' },
+        },
+      }),
+    )
+
+    expect(result).toEqual(new Set(['setting_comment']))
+  })
+
+  it('returns an empty set when nothing is disabled or notifyAbout is empty', () => {
+    expect(disabledEmailSettingIds(settings())).toEqual(new Set())
+    expect(
+      disabledEmailSettingIds(
+        settings({ notifyAbout: { newCommentOnATask: { disableEmail: false, notificationSettingId: 'setting_comment' } } }),
+      ),
+    ).toEqual(new Set())
+  })
+})

src/app/api/notification/iuEmailPreference.ts

@@ -0,0 +1,10 @@
+import { InternalUserNotificationSettings } from '@/types/common'
+
+// Setting ids for which this IU has turned email off. Matched by notificationSettingId (our app's
+// categories carry it), so this is independent of the platform's internal category key names.
+export const disabledEmailSettingIds = (settings: InternalUserNotificationSettings): Set<string> => {
+  const ids = Object.values(settings.notifyAbout)
+    .filter((entry) => entry.notificationSettingId && entry.disableEmail)
+    .map((entry) => entry.notificationSettingId as string)
+  return new Set(ids)
+}

src/app/api/notification/notification.service.test.ts

@@ -432,13 +432,13 @@ describe('guard: IU wiring boundaries', () => {
   })
 })
 
-describe('guard: IU notifications ship ungated (settingId gating disabled)', () => {
-  it('does not attach notificationSettingId to the in-product dispatch or the buffered email', async () => {
+describe('guard: IU notifications carry the resolved notificationSettingId (platform gating)', () => {
+  it('attaches the resolved notificationSettingId to the in-product dispatch and the buffered email', async () => {
     const task = makeTask({ assigneeType: AssigneeType.internalUser, clientId: null })
     await buildService().create(NotificationTaskActions.Assigned, task, { disableEmail: false })
 
-    expect(mockCreateNotification.mock.calls[0][0].notificationSettingId).toBeUndefined()
-    expect(mockGroupedCreateMany.mock.calls[0][0].data[0].individualEmail.notificationSettingId).toBeUndefined()
+    expect(mockCreateNotification.mock.calls[0][0].notificationSettingId).toBe('setting_assigned')
+    expect(mockGroupedCreateMany.mock.calls[0][0].data[0].individualEmail.notificationSettingId).toBe('setting_assigned')
   })
 
   it('still buffers the IU email and fires the in-product notification', async () => {

src/app/api/notification/notification.service.ts

@@ -14,7 +14,7 @@ import APIError from '@api/core/exceptions/api'
 import { BaseService } from '@api/core/services/base.service'
 import { NotificationTaskActions } from '@api/core/types/tasks'
 import { getEmailDetails, getInProductNotificationDetails, mergeEmailOverride } from '@api/notification/notification.helpers'
-// import { resolveIuNotificationSettingId } from '@api/notification/resolveNotificationSettingId'
+import { resolveIuNotificationSettingId } from '@api/notification/resolveNotificationSettingId'
 import { AssigneeType, ClientNotification, GroupedEmailEventType, Prisma, Task } from '@prisma/client'
 import { randomUUID } from 'crypto'
 import { enqueueGroupedEmailFlush } from '@/jobs/notifications/flush-grouped-email'
@@ -74,9 +74,10 @@ export class NotificationService extends BaseService {
       const email = baseEmail ? mergeEmailOverride({ base: baseEmail, override: opts.emailOverride }) : baseEmail
 
       const category = this.groupedEventTypeFor(action)
-      // TODO(OUT-3929): re-enable per-IU gating once Copilot exposes a preference-read endpoint — ship IUs ungated for now.
-      const notificationSettingId = undefined
-      // const notificationSettingId = isRecipientIu && category ? await resolveIuNotificationSettingId({ copilot: this.copilot, workspaceId: task.workspaceId, category }) : undefined
+      const notificationSettingId =
+        isRecipientIu && category
+          ? await resolveIuNotificationSettingId({ copilot: this.copilot, workspaceId: task.workspaceId, category })
+          : undefined
 
       const groupedType = email && recipientId ? category : null
       if (groupedType) {
@@ -201,9 +202,10 @@ export class NotificationService extends BaseService {
       const association = AssociationsSchema.parse(task.associations)?.[0]
       const category = this.groupedEventTypeFor(action)
       const isRecipientIu = opts.isRecipientIu
-      // TODO(OUT-3929): re-enable per-IU gating once Copilot exposes a preference-read endpoint — ship IUs ungated for now.
-      const notificationSettingId = undefined
-      // const notificationSettingId = isRecipientIu && category ? await resolveIuNotificationSettingId({ copilot: this.copilot, workspaceId: task.workspaceId, category }) : undefined
+      const notificationSettingId =
+        isRecipientIu && category
+          ? await resolveIuNotificationSettingId({ copilot: this.copilot, workspaceId: task.workspaceId, category })
+          : undefined
       // Non-null only when these emails should be diverted into the grouped buffer.
       const groupedType = email ? category : null
 

src/jobs/notifications/flush-grouped-email.test.ts

@@ -6,6 +6,7 @@ const mockQueryRaw = jest.fn()
 const mockExecuteRaw = jest.fn()
 const mockFindManyTask = jest.fn()
 const mockGetInternalUsers = jest.fn()
+const mockGetIuNotificationSettings = jest.fn()
 const mockCaptureException = jest.fn()
 
 jest.mock('@trigger.dev/sdk/v3', () => ({
@@ -35,9 +36,11 @@ jest.mock('@/lib/db', () => ({
 }))
 
 jest.mock('@/utils/CopilotAPI', () => ({
-  CopilotAPI: jest
-    .fn()
-    .mockImplementation(() => ({ getInternalUsers: mockGetInternalUsers, createNotification: mockCreateNotification })),
+  CopilotAPI: jest.fn().mockImplementation(() => ({
+    getInternalUsers: mockGetInternalUsers,
+    createNotification: mockCreateNotification,
+    getInternalUserNotificationSettings: mockGetIuNotificationSettings,
+  })),
 }))
 
 jest.mock('./send-grouped-email', () => ({
@@ -83,6 +86,8 @@ beforeEach(() => {
   jest.clearAllMocks()
   seq = 0
   mockGetInternalUsers.mockResolvedValue({ data: [{ id: 'iu_1' }] })
+  // default: IU has all email categories enabled
+  mockGetIuNotificationSettings.mockResolvedValue({ emailSettings: 'active', notifyAbout: {} })
   mockSendGroupedEmail.mockResolvedValue('notif_1')
   mockCreateNotification.mockResolvedValue({ id: 'notif_1' })
   mockExecuteRaw.mockResolvedValue(1)
@@ -161,6 +166,52 @@ describe('flushGroupedEmailRun', () => {
     expect(mockSendGroupedEmail.mock.calls[0][0].notificationSettingId).toBeUndefined()
   })
 
+  it('drops events for categories the IU disabled email on, keeping the rest', async () => {
+    mockGetIuNotificationSettings.mockResolvedValue({
+      emailSettings: 'active',
+      notifyAbout: {
+        newCommentOnATask: { disableEmail: true, notificationSettingId: 'setting_comment' },
+        newTaskAssigned: { disableEmail: false, notificationSettingId: 'setting_assigned' },
+      },
+    })
+    mockQueryRaw.mockResolvedValue([iuRow('setting_assigned'), iuRow('setting_comment')])
+
+    await flushGroupedEmailRun(payload)
+
+    // Only the assignment survives -> replayed as a single individual email, not a grouped summary.
+    expect(mockSendGroupedEmail).not.toHaveBeenCalled()
+    expect(mockCreateNotification).toHaveBeenCalledTimes(1)
+    expect(mockCreateNotification.mock.calls[0][0]).toMatchObject({ notificationSettingId: 'setting_assigned' })
+  })
+
+  it('sends nothing to an IU who disabled email on every buffered category', async () => {
+    mockGetIuNotificationSettings.mockResolvedValue({
+      emailSettings: 'active',
+      notifyAbout: {
+        newCommentOnATask: { disableEmail: true, notificationSettingId: 'setting_comment' },
+        newTaskAssigned: { disableEmail: true, notificationSettingId: 'setting_assigned' },
+      },
+    })
+    mockQueryRaw.mockResolvedValue([iuRow('setting_assigned'), iuRow('setting_comment')])
+
+    const result = await flushGroupedEmailRun(payload)
+
+    expect(mockSendGroupedEmail).not.toHaveBeenCalled()
+    expect(mockCreateNotification).not.toHaveBeenCalled()
+    expect(mockExecuteRaw).toHaveBeenCalledTimes(2) // markRecipientSent + deleteWindowRows
+    expect(result).toMatchObject({ recipients: 1, sent: 0, sentGrouped: 0, sentIndividual: 0 })
+  })
+
+  it('sends ungated when the IU preference read fails (fail-open)', async () => {
+    mockGetIuNotificationSettings.mockRejectedValue(new Error('copilot 5xx'))
+    mockQueryRaw.mockResolvedValue([iuRow('setting_comment'), iuRow('setting_comment')])
+
+    await flushGroupedEmailRun(payload)
+
+    expect(mockSendGroupedEmail).toHaveBeenCalledTimes(1)
+    expect(mockSendGroupedEmail.mock.calls[0][0].content.totalEventCount).toBe(2)
+  })
+
   it('replays the original individual email when the window has a single live event', async () => {
     mockQueryRaw.mockResolvedValue([row()])
 

src/jobs/notifications/flush-grouped-email.ts

@@ -3,6 +3,7 @@ import 'server-only'
 import { randomUUID } from 'crypto'
 
 import { composeGroupedEmail, GroupedEmailEventInput } from '@/app/api/notification/groupedEmail.composer'
+import { disabledEmailSettingIds } from '@/app/api/notification/iuEmailPreference'
 import { copilotAPIKey } from '@/config'
 import { Sentry } from '@/jobs/sentry'
 import DBClient from '@/lib/db'
@@ -87,12 +88,30 @@ const senderFromEvents = (events: WindowEvent[]): EventSender | undefined => {
   return { senderId: email.senderId, senderType: email.senderType, senderCompanyId: email.senderCompanyId }
 }
 
-// Seam for per-IU category filtering. Today it's a pass-through: the platform can't gate a mixed
-// grouped summary, and there's no API to read an IU's per-setting preferences. Once Assembly exposes
-// that endpoint, fetch the recipient IU's prefs here and drop events for disabled categories so the
-// summary only carries allowed ones (an all-disabled recipient then sends nothing).
-// TODO(OUT-3929): implement per-IU filtering when the read endpoint lands.
-const filterEventsForIuPreferences = (events: WindowEvent[]): WindowEvent[] => events
+// Per-IU category filtering for grouped summaries. The platform can only gate a send that carries
+// one setting id, so a mixed-category window is gated here instead: read the recipient IU's prefs
+// and drop events for categories whose email is disabled (an all-disabled recipient sends nothing).
+// Matched by the notificationSettingId the buffered email already carries. Fails open on read error.
+const filterEventsForIuPreferences = async (
+  events: WindowEvent[],
+  recipientIuId: string,
+  copilot: CopilotAPI,
+): Promise<WindowEvent[]> => {
+  try {
+    const settings = await copilot.getInternalUserNotificationSettings(recipientIuId)
+    const disabled = disabledEmailSettingIds(settings)
+    return events.filter((e) => {
+      const id = e.individualEmail?.notificationSettingId
+      return !id || !disabled.has(id)
+    })
+  } catch (e) {
+    logger.error('flush-grouped-email: failed to read IU prefs; sending ungated', {
+      recipientIuId,
+      error: serializeError(e),
+    })
+    return events
+  }
+}
 
 // The platform can only gate a send that carries one setting id. A grouped summary gets an id only
 // when every live event shares the same one (i.e. a single-category window); a mixed window sends
@@ -232,7 +251,11 @@ export const flushGroupedEmailRun = async (payload: FlushGroupedEmailPayload) =>
   }
 
   for (const group of iuGroups) {
-    const liveEvents = filterEventsForIuPreferences(group.events.filter((e) => liveTaskIds.has(e.taskId)))
+    const liveEvents = await filterEventsForIuPreferences(
+      group.events.filter((e) => liveTaskIds.has(e.taskId)),
+      group.recipientIuId,
+      copilot,
+    )
     // A single event replays its buffered email verbatim (it already carries its own setting id).
     const singleEmail = liveEvents.length === 1 ? liveEvents[0].individualEmail : null
 

src/types/common.ts

@@ -237,6 +237,22 @@ export const NotificationSettingsResponseSchema = z.object({
 })
 export type NotificationSettingsResponse = z.infer<typeof NotificationSettingsResponseSchema>
 
+// A single IU's per-category notification preference (GET /v1/internal-users/:id/notification-settings).
+// Only our app's categories carry appId + notificationSettingId; the platform's own categories don't.
+export const IuNotifyAboutEntrySchema = z.object({
+  disableInProduct: z.boolean().optional(),
+  disableEmail: z.boolean().optional(),
+  appId: z.string().optional(),
+  notificationSettingId: z.string().optional(),
+})
+
+export const InternalUserNotificationSettingsSchema = z.object({
+  disableInProduct: z.boolean().optional(),
+  emailSettings: z.string().optional(),
+  notifyAbout: z.record(z.string(), IuNotifyAboutEntrySchema).default({}),
+})
+export type InternalUserNotificationSettings = z.infer<typeof InternalUserNotificationSettingsSchema>
+
 export const ScrapMediaRequestSchema = z.object({
   filePath: z.string(),
   taskId: z.string().uuid().optional(),

src/utils/CopilotAPI.ts

@@ -19,6 +19,8 @@ import {
   CopilotListArgs,
   CustomFieldResponse,
   CustomFieldResponseSchema,
+  InternalUserNotificationSettings,
+  InternalUserNotificationSettingsSchema,
   InternalUsers,
   InternalUsersResponse,
   InternalUsersResponseSchema,
@@ -370,6 +372,15 @@ export class CopilotAPI {
     return NotificationSettingsResponseSchema.parse(response)
   }
 
+  // A single IU's live per-category notification preferences. Never cached — the platform evaluates
+  // this on every send and IUs can toggle it at any time.
+  async _getInternalUserNotificationSettings(id: string): Promise<InternalUserNotificationSettings> {
+    console.info('CopilotAPI#_getInternalUserNotificationSettings', id)
+    const workspaceId = await this._resolveWorkspaceId()
+    const response = await this._manualFetch(`internal-users/${id}/notification-settings`, undefined, workspaceId)
+    return InternalUserNotificationSettingsSchema.parse(response)
+  }
+
   async dispatchWebhook(
     eventName: DISPATCHABLE_EVENT,
     {
@@ -435,6 +446,7 @@ export class CopilotAPI {
   manualFetch = this.wrapWithRetry(this._manualFetch)
   getIUNotification = this.wrapWithRetry(this._getIUNotification)
   getNotificationSettings = this.wrapWithRetry(this._getNotificationSettings)
+  getInternalUserNotificationSettings = this.wrapWithRetry(this._getInternalUserNotificationSettings)
 }
 
 const cachedFetchInternalUser = cache(