Internal tool to test megaphone

ts/components/Preferences.dom.stories.tsx

@@ -631,6 +631,7 @@ export default {
       action('generateDonationReceiptBlob')();
       return new Blob();
     },
+    addVisibleMegaphone: async () => Promise.resolve(),
     internalDeleteAllMegaphones: async () => {
       return Promise.resolve(0);
     },

ts/components/Preferences.dom.tsx

@@ -101,6 +101,7 @@ import { AxoButton } from '../axo/AxoButton.dom.js';
 import type { ExternalProps as SmartNotificationProfilesProps } from '../state/smart/PreferencesNotificationProfiles.preload.js';
 import type { LocalBackupExportMetadata } from '../types/LocalExport.std.js';
 import { isDonationsPage } from './PreferencesDonations.dom.js';
+import type { VisibleRemoteMegaphoneType } from '../types/Megaphone.std.js';
 
 const { isNumber, noop, partition } = lodash;
 
@@ -289,6 +290,7 @@ type PropsFunctionType = {
     receipt: DonationReceipt,
     i18n: LocalizerType
   ) => Promise<Blob>;
+  addVisibleMegaphone: (megaphone: VisibleRemoteMegaphoneType) => void;
 
   // Change handlers
   onAudioNotificationsChange: CheckboxChangeHandlerType;
@@ -541,6 +543,7 @@ export function Preferences({
   internalAddDonationReceipt,
   saveAttachmentToDisk,
   generateDonationReceiptBlob,
+  addVisibleMegaphone,
   internalDeleteAllMegaphones,
   __dangerouslyRunAbitraryReadOnlySqlQuery,
   cqsTestMode,
@@ -2327,6 +2330,7 @@ export function Preferences({
             internalAddDonationReceipt={internalAddDonationReceipt}
             saveAttachmentToDisk={saveAttachmentToDisk}
             generateDonationReceiptBlob={generateDonationReceiptBlob}
+            addVisibleMegaphone={addVisibleMegaphone}
             internalDeleteAllMegaphones={internalDeleteAllMegaphones}
             __dangerouslyRunAbitraryReadOnlySqlQuery={
               __dangerouslyRunAbitraryReadOnlySqlQuery

ts/components/PreferencesInternal.dom.tsx

@@ -21,6 +21,8 @@ import { getHumanDonationAmount } from '../util/currency.dom.js';
 import { AutoSizeTextArea } from './AutoSizeTextArea.dom.js';
 import { AxoButton } from '../axo/AxoButton.dom.js';
 import { AxoSwitch } from '../axo/AxoSwitch.dom.js';
+import type { VisibleRemoteMegaphoneType } from '../types/Megaphone.std.js';
+import { internalGetTestMegaphone } from '../util/getTestMegaphone.std.js';
 
 const log = createLogger('PreferencesInternal');
 
@@ -33,6 +35,7 @@ export function PreferencesInternal({
   internalAddDonationReceipt,
   saveAttachmentToDisk,
   generateDonationReceiptBlob,
+  addVisibleMegaphone,
   internalDeleteAllMegaphones,
   __dangerouslyRunAbitraryReadOnlySqlQuery,
   cqsTestMode,
@@ -55,6 +58,7 @@ export function PreferencesInternal({
     receipt: DonationReceipt,
     i18n: LocalizerType
   ) => Promise<Blob>;
+  addVisibleMegaphone: (megaphone: VisibleRemoteMegaphoneType) => void;
   internalDeleteAllMegaphones: () => Promise<number>;
   __dangerouslyRunAbitraryReadOnlySqlQuery: (
     readonlySqlQuery: string
@@ -73,6 +77,9 @@ export function PreferencesInternal({
     BackupValidationResultType | undefined
   >();
 
+  const [showMegaphoneResult, setShowMegaphoneResult] = useState<
+    string | undefined
+  >();
   const [deleteAllMegaphonesResult, setDeleteAllMegaphonesResult] = useState<
     number | undefined
   >();
@@ -482,6 +489,42 @@ export function PreferencesInternal({
       </SettingsRow>
 
       <SettingsRow title="Megaphones">
+        <FlowingSettingsControl>
+          <div className="Preferences__two-thirds-flow">
+            Show a test megaphone in memory. Disappears on restart.
+          </div>
+          <div
+            className={classNames(
+              'Preferences__flow-button',
+              'Preferences__one-third-flow',
+              'Preferences__one-third-flow--align-right'
+            )}
+          >
+            <AxoButton.Root
+              variant="secondary"
+              size="lg"
+              onClick={async () => {
+                const megaphone = internalGetTestMegaphone();
+                addVisibleMegaphone(megaphone);
+                setShowMegaphoneResult(
+                  `Megaphone shown. Go to Chats tab to view.\n${JSON.stringify(megaphone, null, 2)}`
+                );
+              }}
+            >
+              Show megaphone
+            </AxoButton.Root>
+          </div>
+          {showMegaphoneResult != null && (
+            <AutoSizeTextArea
+              i18n={i18n}
+              value={showMegaphoneResult}
+              onChange={() => null}
+              readOnly
+              placeholder=""
+              moduleClassName="Preferences__ReadonlySqlPlayground__Textarea"
+            />
+          )}
+        </FlowingSettingsControl>
         <FlowingSettingsControl>
           <div className="Preferences__two-thirds-flow">
             Delete local records of remote megaphones

ts/components/RemoteMegaphone.dom.stories.tsx

@@ -26,7 +26,7 @@ export default {
     secondaryCtaText: 'Not now',
     title: 'Donate to Signal',
     body: 'Signal is powered by people like you. Show your support today!',
-    imagePath: '/fixtures/donate-heart.png',
+    imagePath: 'images/donate-heart.png',
     isFullSize: true,
     onClickNarrowMegaphone: action('onClickNarrowMegaphone'),
     onInteractWithMegaphone: action('onInteractWithMegaphone'),

ts/state/ducks/megaphones.preload.ts

@@ -17,6 +17,7 @@ import type {
 import type { ChangeLocationAction } from './nav.std.js';
 import { actions as navActions } from './nav.std.js';
 import { NavTab, SettingsPage } from '../../types/Nav.std.js';
+import { isTestMegaphoneId } from '../../util/getTestMegaphone.std.js';
 
 const log = createLogger('megaphones');
 
@@ -88,10 +89,14 @@ function interactWithMegaphone(
   RemoveVisibleMegaphoneAction | ChangeLocationAction
 > {
   return async dispatch => {
+    const isTest = isTestMegaphoneId(megaphoneId);
+
     if (ctaId === 'donate' || ctaId === 'finish') {
       try {
         log.info(`Finishing megaphone ${megaphoneId}, ctaId=${ctaId}`);
-        await DataWriter.finishMegaphone(megaphoneId);
+        if (!isTest) {
+          await DataWriter.finishMegaphone(megaphoneId);
+        }
       } catch (error) {
         log.error(
           `Failed to finish megaphone ${megaphoneId}`,
@@ -112,7 +117,9 @@ function interactWithMegaphone(
     } else if (ctaId === 'snooze') {
       try {
         log.info(`Snoozing megaphone ${megaphoneId}`);
-        await DataWriter.snoozeMegaphone(megaphoneId);
+        if (!isTest) {
+          await DataWriter.snoozeMegaphone(megaphoneId);
+        }
       } catch (error) {
         log.error(
           `Failed to snooze megaphone ${megaphoneId}`,

ts/state/selectors/megaphones.preload.ts

@@ -11,6 +11,10 @@ import {
   type VisibleRemoteMegaphoneType,
 } from '../../types/Megaphone.std.js';
 import type { StateSelector } from '../types.std.js';
+import {
+  isTestMegaphone,
+  TEST_MEGAPHONE_IMAGE,
+} from '../../util/getTestMegaphone.std.js';
 
 export function getMegaphonesState(
   state: Readonly<StateType>
@@ -36,6 +40,8 @@ export const getVisibleMegaphonesForDisplay: StateSelector<
     secondaryCtaText: megaphone.secondaryCtaText,
     title: megaphone.title,
     body: megaphone.body,
-    imagePath: getAbsoluteMegaphoneImageFilePath(megaphone.imagePath),
+    imagePath: isTestMegaphone(megaphone)
+      ? TEST_MEGAPHONE_IMAGE
+      : getAbsoluteMegaphoneImageFilePath(megaphone.imagePath),
   }))
 );

ts/state/smart/Preferences.preload.tsx

@@ -120,6 +120,7 @@ import { DonationsErrorBoundary } from '../../components/DonationsErrorBoundary.
 import type { SmartPreferencesChatFoldersPageProps } from './PreferencesChatFoldersPage.preload.js';
 import type { SmartPreferencesEditChatFolderPageProps } from './PreferencesEditChatFolderPage.preload.js';
 import type { ExternalProps as SmartNotificationProfilesProps } from './PreferencesNotificationProfiles.preload.js';
+import { useMegaphonesActions } from '../ducks/megaphones.preload.js';
 
 const DEFAULT_NOTIFICATION_SETTING = 'message';
 
@@ -225,6 +226,7 @@ export function SmartPreferences(): React.JSX.Element | null {
   const { showToast } = useToastActions();
   const { internalAddDonationReceipt } = useDonationsActions();
   const { startPlaintextExport, startLocalBackupExport } = useBackupActions();
+  const { addVisibleMegaphone } = useMegaphonesActions();
 
   // Selectors
 
@@ -986,6 +988,7 @@ export function SmartPreferences(): React.JSX.Element | null {
           internalAddDonationReceipt={internalAddDonationReceipt}
           saveAttachmentToDisk={saveAttachmentToDisk}
           generateDonationReceiptBlob={generateDonationReceiptBlob}
+          addVisibleMegaphone={addVisibleMegaphone}
           internalDeleteAllMegaphones={internalDeleteAllMegaphones}
           __dangerouslyRunAbitraryReadOnlySqlQuery={
             __dangerouslyRunAbitraryReadOnlySqlQuery

ts/test-node/services/megaphone_test.preload.ts

@@ -35,7 +35,7 @@ const FAKE_MEGAPHONE: RemoteMegaphoneType = {
   localeFetched: 'en',
   title: 'megaphone',
   body: 'cats',
-  imagePath: '../../../fixtures/donate-heart.png',
+  imagePath: '../../../images/donate-heart.png',
   primaryCtaText: 'donate',
   secondaryCtaText: 'snooze',
   snoozeCount: 0,

ts/util/getTestMegaphone.std.ts

@@ -0,0 +1,51 @@
+// Copyright 2026 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type {
+  RemoteMegaphoneId,
+  VisibleRemoteMegaphoneType,
+} from '../types/Megaphone.std.js';
+import { MegaphoneCtaId } from '../types/Megaphone.std.js';
+import { DAY } from './durations/index.std.js';
+
+const INTERNAL_TEST_ID = 'INTERNAL_TEST' as RemoteMegaphoneId;
+export const TEST_MEGAPHONE_IMAGE = 'images/donate-heart.png';
+
+export function internalGetTestMegaphone(
+  props?: Partial<VisibleRemoteMegaphoneType>
+): VisibleRemoteMegaphoneType {
+  return {
+    priority: 100,
+    desktopMinVersion: '1.0.0',
+    dontShowBeforeEpochMs: Date.now() - 1 * DAY,
+    dontShowAfterEpochMs: Date.now() + 14 * DAY,
+    showForNumberOfDays: 30,
+    conditionalId: 'internal',
+    primaryCtaId: MegaphoneCtaId.Donate,
+    primaryCtaData: null,
+    secondaryCtaId: MegaphoneCtaId.Snooze,
+    secondaryCtaData: { snoozeDurationDays: [5, 7, 100] },
+    localeFetched: 'en',
+    title: 'Donate Today',
+    body: 'As a nonprofit, Signal needs your support.',
+    imagePath: TEST_MEGAPHONE_IMAGE,
+    primaryCtaText: 'Donate',
+    secondaryCtaText: 'Snooze',
+    snoozeCount: 0,
+    snoozedAt: null,
+    shownAt: null,
+    isFinished: false,
+    ...props,
+    id: INTERNAL_TEST_ID,
+  };
+}
+
+export function isTestMegaphone(
+  megaphone: VisibleRemoteMegaphoneType
+): boolean {
+  return megaphone.id === INTERNAL_TEST_ID;
+}
+
+export function isTestMegaphoneId(id: RemoteMegaphoneId): boolean {
+  return id === INTERNAL_TEST_ID;
+}