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/*
* Copyright (C) 2020 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.car.messenger.core.shared;
import static com.android.car.messenger.core.shared.MessageConstants.EXTRA_ACCOUNT_ID;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.service.notification.StatusBarNotification;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import com.android.car.assist.payloadhandlers.ConversationPayloadHandler;
import com.android.car.messenger.R;
import com.android.car.messenger.common.Conversation;
import com.android.car.messenger.core.interfaces.AppFactory;
import com.android.car.messenger.core.service.MessengerService;
import com.android.car.messenger.core.ui.launcher.MessageLauncherActivity;
import com.android.car.messenger.core.util.L;
import com.android.car.messenger.core.util.VoiceUtil;
/** Useful notification handler for posting messages */
public class NotificationHandler {
@NonNull
private static final String GROUP_TAP_TO_READ_NOTIFICATION =
"com.android.car.messenger.TAP_TO_READ";
private static final int TAP_TO_READ_SBN_ATTEMPT_LIMIT = 3;
private NotificationHandler() {}
/** Posts, removes or updates a notification based on a conversation */
public static void postOrRemoveNotification(@NonNull Conversation conversation) {
if (conversation.isMuted()) {
removeNotification(conversation.getId());
} else {
postNotification(conversation);
}
}
/* Posts or updates a notification based on a conversation */
private static void postNotification(Conversation conversation) {
int userAccountId = conversation.getExtras().getInt(EXTRA_ACCOUNT_ID, 0);
if (userAccountId == 0) {
L.w(
"posting Notification with null user account id. "
+ "Note, reply would likely fail if user account id is not set.");
}
Conversation tapToReadConversation =
VoiceUtil.createTapToReadConversation(conversation, userAccountId);
Context context = AppFactory.get().getContext();
NotificationManager notificationManager =
context.getSystemService(NotificationManager.class);
String channelId = MessengerService.MESSAGE_CHANNEL_ID;
Notification notification =
ConversationPayloadHandler.createNotificationFromConversation(
context, channelId, tapToReadConversation, R.drawable.ic_message, null);
notification.contentIntent = createServiceIntent();
notificationManager.notify(tapToReadConversation.getId().hashCode(), notification);
}
private static PendingIntent createServiceIntent() {
Context context = AppFactory.get().getContext();
Intent intent =
new Intent(context, MessageLauncherActivity.class)
.addFlags(
Intent.FLAG_ACTIVITY_NEW_TASK
| Intent.FLAG_ACTIVITY_CLEAR_TOP
| Intent.FLAG_ACTIVITY_SINGLE_TOP)
.setClass(context, MessengerService.class);
return PendingIntent.getActivity(
context,
/* requestCode= */ 0,
intent,
PendingIntent.FLAG_IMMUTABLE | PendingIntent.FLAG_UPDATE_CURRENT);
}
/**
* Posts a notification in the foreground for Tap To Read
*
* <p>This is useful as legacy digital assistant implementations of Tap To Read require a {@link
* StatusBarNotification} in order to fulfill a tap to read request.
*
* <p>This notification is invisible to the user but accessible by digital assistants.
*
* @return the StatusBarNotification posted by the system for this notification, or null if not
* found after a limited attempt at retrieval
*/
@Nullable
public static StatusBarNotification postNotificationForLegacyTapToRead(
@NonNull Conversation tapToReadConversation) {
Context context = AppFactory.get().getContext();
// cancel any other notifications within group.
// There should be only notification in group at a time.
cancelAllTapToReadNotifications(context);
// Post as a foreground service:
// Foreground notifications by system apps with low priority
// are hidden from user view, which is desired
Notification notification =
ConversationPayloadHandler.createNotificationFromConversation(
context,
MessengerService.APP_RUNNING_CHANNEL_ID,
tapToReadConversation,
context.getApplicationInfo().icon,
GROUP_TAP_TO_READ_NOTIFICATION);
int id = (GROUP_TAP_TO_READ_NOTIFICATION + tapToReadConversation.getId()).hashCode();
NotificationManager notificationManager =
context.getSystemService(NotificationManager.class);
notificationManager.notify(id, notification);
// attempt to retrieve the status bar notification based on the notification
// limit attempts
int tries = 0;
StatusBarNotification sbn;
do {
sbn = findSBN(notificationManager, id);
tries++;
} while (sbn == null && tries < TAP_TO_READ_SBN_ATTEMPT_LIMIT);
return sbn;
}
/** Cancels all Tap To Read Notifications */
public static void cancelAllTapToReadNotifications(@NonNull Context context) {
NotificationManager notificationManager =
context.getSystemService(NotificationManager.class);
for (StatusBarNotification sbn : notificationManager.getActiveNotifications()) {
if (GROUP_TAP_TO_READ_NOTIFICATION.equals(sbn.getNotification().getGroup())) {
notificationManager.cancel(sbn.getId());
}
}
}
/** Returns the {@link StatusBarNotification} with desired id, or null if none found */
private static StatusBarNotification findSBN(
@NonNull NotificationManager notificationManager, int id) {
for (StatusBarNotification sbn : notificationManager.getActiveNotifications()) {
if (sbn.getId() == id) {
return sbn;
}
}
return null;
}
/** Removes a notification based on a conversation */
public static void removeNotification(@NonNull String conversationId) {
Context context = AppFactory.get().getContext();
NotificationManager notificationManager =
context.getSystemService(NotificationManager.class);
notificationManager.cancel(conversationId.hashCode());
}
}
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