Merge "Restore deleted conversation channel on notification posted" into main
diff --git a/services/core/java/com/android/server/notification/NotificationManagerService.java b/services/core/java/com/android/server/notification/NotificationManagerService.java
index 8c75367..bae06347 100755
--- a/services/core/java/com/android/server/notification/NotificationManagerService.java
+++ b/services/core/java/com/android/server/notification/NotificationManagerService.java
@@ -7042,9 +7042,8 @@
             channelId = (new Notification.TvExtender(notification)).getChannelId();
         }
         String shortcutId = n.getShortcutId();
-        final NotificationChannel channel = mPreferencesHelper.getConversationNotificationChannel(
-                pkg, notificationUid, channelId, shortcutId,
-                true /* parent ok */, false /* includeDeleted */);
+        final NotificationChannel channel = getNotificationChannelRestoreDeleted(pkg,
+                callingUid, notificationUid, channelId, shortcutId);
         if (channel == null) {
             final String noChannelStr = "No Channel found for "
                     + "pkg=" + pkg
@@ -7162,6 +7161,35 @@
         return true;
     }
 
+    /**
+     * Returns a channel, if exists, and restores deleted conversation channels.
+     */
+    @Nullable
+    private NotificationChannel getNotificationChannelRestoreDeleted(String pkg,
+            int callingUid, int notificationUid, String channelId, String conversationId) {
+        // Restore a deleted conversation channel, if exists. Otherwise use the parent channel.
+        NotificationChannel channel = mPreferencesHelper.getConversationNotificationChannel(
+                pkg, notificationUid, channelId, conversationId,
+                true /* parent ok */, !TextUtils.isEmpty(conversationId) /* includeDeleted */);
+        // Restore deleted conversation channel
+        if (channel != null && channel.isDeleted()) {
+            if (Objects.equals(conversationId, channel.getConversationId())) {
+                boolean needsPolicyFileChange = mPreferencesHelper.createNotificationChannel(
+                        pkg, notificationUid, channel, true /* fromTargetApp */,
+                        mConditionProviders.isPackageOrComponentAllowed(pkg,
+                        UserHandle.getUserId(notificationUid)), callingUid, true);
+                // Update policy file if the conversation channel was restored
+                if (needsPolicyFileChange) {
+                    handleSavePolicyFile();
+                }
+            } else {
+                // Do not restore parent channel
+                channel = null;
+            }
+        }
+        return channel;
+    }
+
     private void onConversationRemovedInternal(String pkg, int uid, Set<String> shortcuts) {
         checkCallerIsSystem();
         Preconditions.checkStringNotEmpty(pkg);
diff --git a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
index 3803244..7fb8b30 100755
--- a/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
+++ b/services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java
@@ -3239,7 +3239,7 @@
         mService.setPreferencesHelper(mPreferencesHelper);
         when(mPreferencesHelper.getNotificationChannel(
                 anyString(), anyInt(), eq("foo"), anyBoolean())).thenReturn(
-                        new NotificationChannel("foo", "foo", IMPORTANCE_HIGH));
+                    new NotificationChannel("foo", "foo", IMPORTANCE_HIGH));
 
         Notification.TvExtender tv = new Notification.TvExtender().setChannelId("foo");
         mBinderService.enqueueNotificationWithTag(PKG, PKG, "testTvExtenderChannelOverride_onTv", 0,
@@ -9927,6 +9927,174 @@
     }
 
     @Test
+    public void testRestoreConversationChannel_deleted() throws Exception {
+        // Create parent channel
+        when(mPackageManager.isPackageSuspendedForUser(anyString(), anyInt())).thenReturn(false);
+        final NotificationChannel originalChannel = new NotificationChannel("id", "name",
+                IMPORTANCE_DEFAULT);
+        NotificationChannel parentChannel = parcelAndUnparcel(originalChannel,
+                NotificationChannel.CREATOR);
+        assertEquals(originalChannel, parentChannel);
+        mBinderService.createNotificationChannels(PKG,
+                new ParceledListSlice(Arrays.asList(parentChannel)));
+
+        //Create deleted conversation channel
+        mBinderService.createConversationNotificationChannelForPackage(
+                PKG, mUid, parentChannel, VALID_CONVO_SHORTCUT_ID);
+        final NotificationChannel conversationChannel =
+                mBinderService.getConversationNotificationChannel(
+                PKG, mUserId, PKG, originalChannel.getId(), false, VALID_CONVO_SHORTCUT_ID);
+        conversationChannel.setDeleted(true);
+
+        //Create notification record
+        Notification.Builder nb = getMessageStyleNotifBuilder(false /* addDefaultMetadata */,
+                null /* groupKey */, false /* isSummary */);
+        nb.setShortcutId(VALID_CONVO_SHORTCUT_ID);
+        nb.setChannelId(originalChannel.getId());
+        StatusBarNotification sbn = new StatusBarNotification(PKG, PKG, 1,
+                "tag", mUid, 0, nb.build(), UserHandle.getUserHandleForUid(mUid), null, 0);
+        NotificationRecord nr = new NotificationRecord(mContext, sbn, originalChannel);
+        assertThat(nr.getChannel()).isEqualTo(originalChannel);
+
+        mBinderService.enqueueNotificationWithTag(PKG, PKG, nr.getSbn().getTag(),
+                nr.getSbn().getId(), nr.getSbn().getNotification(), nr.getSbn().getUserId());
+        waitForIdle();
+
+        // Verify that the channel was changed to the conversation channel and restored
+        assertThat(mService.getNotificationRecord(nr.getKey()).isConversation()).isTrue();
+        assertThat(mService.getNotificationRecord(nr.getKey()).getChannel()).isEqualTo(
+                conversationChannel);
+        assertThat(mService.getNotificationRecord(nr.getKey()).getChannel().isDeleted()).isFalse();
+        assertThat(mService.getNotificationRecord(nr.getKey()).getChannel().getDeletedTimeMs())
+                .isEqualTo(-1);
+    }
+
+    @Test
+    public void testDoNotRestoreParentChannel_deleted() throws Exception {
+        // Create parent channel and set as deleted
+        when(mPackageManager.isPackageSuspendedForUser(anyString(), anyInt())).thenReturn(false);
+        final NotificationChannel originalChannel = new NotificationChannel("id", "name",
+                IMPORTANCE_DEFAULT);
+        NotificationChannel parentChannel = parcelAndUnparcel(originalChannel,
+                NotificationChannel.CREATOR);
+        assertEquals(originalChannel, parentChannel);
+        mBinderService.createNotificationChannels(PKG,
+                new ParceledListSlice(Arrays.asList(parentChannel)));
+        parentChannel.setDeleted(true);
+
+        //Create notification record
+        Notification.Builder nb = getMessageStyleNotifBuilder(false /* addDefaultMetadata */,
+                null /* groupKey */, false /* isSummary */);
+        nb.setShortcutId(VALID_CONVO_SHORTCUT_ID);
+        nb.setChannelId(originalChannel.getId());
+        StatusBarNotification sbn = new StatusBarNotification(PKG, PKG, 1,
+                "tag", mUid, 0, nb.build(), UserHandle.getUserHandleForUid(mUid), null, 0);
+        NotificationRecord nr = new NotificationRecord(mContext, sbn, originalChannel);
+        assertThat(nr.getChannel()).isEqualTo(originalChannel);
+
+        when(mPermissionHelper.hasPermission(mUid)).thenReturn(true);
+
+        mBinderService.enqueueNotificationWithTag(PKG, PKG, nr.getSbn().getTag(),
+                nr.getSbn().getId(), nr.getSbn().getNotification(), nr.getSbn().getUserId());
+        waitForIdle();
+
+        // Verify that the channel was not restored and the notification was not posted
+        assertThat(mService.mChannelToastsSent).contains(mUid);
+        assertThat(mService.getNotificationRecord(nr.getKey())).isNull();
+        assertThat(parentChannel.isDeleted()).isTrue();
+    }
+
+    @Test
+    public void testEnqueueToConversationChannel_notDeleted_doesNotRestore() throws Exception {
+        TestableNotificationManagerService service = spy(mService);
+        PreferencesHelper preferencesHelper = spy(mService.mPreferencesHelper);
+        service.setPreferencesHelper(preferencesHelper);
+        // Create parent channel
+        when(mPackageManager.isPackageSuspendedForUser(anyString(), anyInt())).thenReturn(false);
+        final NotificationChannel originalChannel = new NotificationChannel("id", "name",
+                IMPORTANCE_DEFAULT);
+        NotificationChannel parentChannel = parcelAndUnparcel(originalChannel,
+                NotificationChannel.CREATOR);
+        assertEquals(originalChannel, parentChannel);
+        mBinderService.createNotificationChannels(PKG,
+                new ParceledListSlice(Arrays.asList(parentChannel)));
+
+        //Create conversation channel
+        mBinderService.createConversationNotificationChannelForPackage(
+                PKG, mUid, parentChannel, VALID_CONVO_SHORTCUT_ID);
+        final NotificationChannel conversationChannel =
+                mBinderService.getConversationNotificationChannel(
+                    PKG, mUserId, PKG, originalChannel.getId(), false, VALID_CONVO_SHORTCUT_ID);
+
+        //Create notification record
+        Notification.Builder nb = getMessageStyleNotifBuilder(false /* addDefaultMetadata */,
+                null /* groupKey */, false /* isSummary */);
+        nb.setShortcutId(VALID_CONVO_SHORTCUT_ID);
+        nb.setChannelId(originalChannel.getId());
+        StatusBarNotification sbn = new StatusBarNotification(PKG, PKG, 1,
+                "tag", mUid, 0, nb.build(), UserHandle.getUserHandleForUid(mUid), null, 0);
+        NotificationRecord nr = new NotificationRecord(mContext, sbn, originalChannel);
+        assertThat(nr.getChannel()).isEqualTo(originalChannel);
+
+        mBinderService.enqueueNotificationWithTag(PKG, PKG, nr.getSbn().getTag(),
+                nr.getSbn().getId(), nr.getSbn().getNotification(), nr.getSbn().getUserId());
+        waitForIdle();
+
+        // Verify that the channel was changed to the conversation channel and not restored
+        assertThat(service.getNotificationRecord(nr.getKey()).isConversation()).isTrue();
+        assertThat(service.getNotificationRecord(nr.getKey()).getChannel()).isEqualTo(
+                conversationChannel);
+        verify(service, never()).handleSavePolicyFile();
+        verify(preferencesHelper, never()).createNotificationChannel(anyString(),
+                anyInt(), any(), anyBoolean(), anyBoolean(), anyInt(), anyBoolean());
+    }
+
+    @Test
+    public void testEnqueueToParentChannel_notDeleted_doesNotRestore() throws Exception {
+        TestableNotificationManagerService service = spy(mService);
+        PreferencesHelper preferencesHelper = spy(mService.mPreferencesHelper);
+        service.setPreferencesHelper(preferencesHelper);
+        // Create parent channel
+        when(mPackageManager.isPackageSuspendedForUser(anyString(), anyInt())).thenReturn(false);
+        final NotificationChannel originalChannel = new NotificationChannel("id", "name",
+                IMPORTANCE_DEFAULT);
+        NotificationChannel parentChannel = parcelAndUnparcel(originalChannel,
+                NotificationChannel.CREATOR);
+        assertEquals(originalChannel, parentChannel);
+        mBinderService.createNotificationChannels(PKG,
+                new ParceledListSlice(Arrays.asList(parentChannel)));
+
+        //Create deleted conversation channel
+        mBinderService.createConversationNotificationChannelForPackage(
+                PKG, mUid, parentChannel, VALID_CONVO_SHORTCUT_ID);
+        final NotificationChannel conversationChannel =
+                mBinderService.getConversationNotificationChannel(
+                    PKG, mUserId, PKG, originalChannel.getId(), false, VALID_CONVO_SHORTCUT_ID);
+
+        //Create notification record without a shortcutId
+        Notification.Builder nb = getMessageStyleNotifBuilder(false /* addDefaultMetadata */,
+                null /* groupKey */, false /* isSummary */);
+        nb.setShortcutId(null);
+        nb.setChannelId(originalChannel.getId());
+        StatusBarNotification sbn = new StatusBarNotification(PKG, PKG, 1,
+                "tag", mUid, 0, nb.build(), UserHandle.getUserHandleForUid(mUid), null, 0);
+        NotificationRecord nr = new NotificationRecord(mContext, sbn, originalChannel);
+        assertThat(nr.getChannel()).isEqualTo(originalChannel);
+
+        mBinderService.enqueueNotificationWithTag(PKG, PKG, nr.getSbn().getTag(),
+                nr.getSbn().getId(), nr.getSbn().getNotification(), nr.getSbn().getUserId());
+        waitForIdle();
+
+        // Verify that the channel is the parent channel and no channel was restored
+        //assertThat(service.getNotificationRecord(nr.getKey()).isConversation()).isFalse();
+        assertThat(service.getNotificationRecord(nr.getKey()).getChannel()).isEqualTo(
+                parentChannel);
+        verify(service, never()).handleSavePolicyFile();
+        verify(preferencesHelper, never()).createNotificationChannel(anyString(),
+                anyInt(), any(), anyBoolean(), anyBoolean(), anyInt(), anyBoolean());
+    }
+
+    @Test
     public void testGetConversationsForPackage_hasShortcut() throws Exception {
         mService.setPreferencesHelper(mPreferencesHelper);
         ArrayList<ConversationChannelWrapper> convos = new ArrayList<>();