Refactor RankingHelper to separate out PreferencesHelper.

Test: Unit tests, manual.
Change-Id: If3d9e2a114268bd49654c271170aafb943369684
diff --git a/services/core/java/com/android/server/notification/PreferencesHelper.java b/services/core/java/com/android/server/notification/PreferencesHelper.java
new file mode 100644
index 0000000..dfc61d9
--- /dev/null
+++ b/services/core/java/com/android/server/notification/PreferencesHelper.java
@@ -0,0 +1,1373 @@
+/**
+ * Copyright (c) 2018, 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.server.notification;
+
+import static android.app.NotificationManager.IMPORTANCE_NONE;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationChannelGroup;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.ParceledListSlice;
+import android.metrics.LogMaker;
+import android.os.Build;
+import android.os.UserHandle;
+import android.provider.Settings;
+import android.service.notification.NotificationListenerService;
+import android.service.notification.RankingHelperProto;
+import android.text.TextUtils;
+import android.util.ArrayMap;
+import android.util.Slog;
+import android.util.SparseBooleanArray;
+import android.util.proto.ProtoOutputStream;
+
+import com.android.internal.R;
+import com.android.internal.annotations.VisibleForTesting;
+import com.android.internal.logging.MetricsLogger;
+import com.android.internal.util.Preconditions;
+import com.android.internal.util.XmlUtils;
+
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.xmlpull.v1.XmlPullParser;
+import org.xmlpull.v1.XmlPullParserException;
+import org.xmlpull.v1.XmlSerializer;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class PreferencesHelper implements RankingConfig {
+    private static final String TAG = "NotificationPrefHelper";
+    private static final int XML_VERSION = 1;
+
+    @VisibleForTesting
+    static final String TAG_RANKING = "ranking";
+    private static final String TAG_PACKAGE = "package";
+    private static final String TAG_CHANNEL = "channel";
+    private static final String TAG_GROUP = "channelGroup";
+
+    private static final String ATT_VERSION = "version";
+    private static final String ATT_NAME = "name";
+    private static final String ATT_UID = "uid";
+    private static final String ATT_ID = "id";
+    private static final String ATT_PRIORITY = "priority";
+    private static final String ATT_VISIBILITY = "visibility";
+    private static final String ATT_IMPORTANCE = "importance";
+    private static final String ATT_SHOW_BADGE = "show_badge";
+    private static final String ATT_APP_USER_LOCKED_FIELDS = "app_user_locked_fields";
+
+    private static final int DEFAULT_PRIORITY = Notification.PRIORITY_DEFAULT;
+    private static final int DEFAULT_VISIBILITY = NotificationManager.VISIBILITY_NO_OVERRIDE;
+    private static final int DEFAULT_IMPORTANCE = NotificationManager.IMPORTANCE_UNSPECIFIED;
+    private static final boolean DEFAULT_SHOW_BADGE = true;
+    /**
+     * Default value for what fields are user locked. See {@link LockableAppFields} for all lockable
+     * fields.
+     */
+    private static final int DEFAULT_LOCKED_APP_FIELDS = 0;
+
+    /**
+     * All user-lockable fields for a given application.
+     */
+    @IntDef({LockableAppFields.USER_LOCKED_IMPORTANCE})
+    public @interface LockableAppFields {
+        int USER_LOCKED_IMPORTANCE = 0x00000001;
+    }
+
+    // pkg|uid => PackagePreferences
+    private final ArrayMap<String, PackagePreferences> mPackagePreferencess = new ArrayMap<>();
+    // pkg => PackagePreferences
+    private final ArrayMap<String, PackagePreferences> mRestoredWithoutUids = new ArrayMap<>();
+
+
+    private final Context mContext;
+    private final PackageManager mPm;
+    private final RankingHandler mRankingHandler;
+    private final ZenModeHelper mZenModeHelper;
+
+    private SparseBooleanArray mBadgingEnabled;
+    private boolean mAreChannelsBypassingDnd;
+
+
+    public PreferencesHelper(Context context, PackageManager pm, RankingHandler rankingHandler,
+            ZenModeHelper zenHelper) {
+        mContext = context;
+        mZenModeHelper = zenHelper;
+        mRankingHandler = rankingHandler;
+        mPm = pm;
+
+        updateBadgingEnabled();
+
+        mAreChannelsBypassingDnd = (mZenModeHelper.getNotificationPolicy().state &
+                NotificationManager.Policy.STATE_CHANNELS_BYPASSING_DND) == 1;
+        updateChannelsBypassingDnd();
+
+    }
+
+    public void readXml(XmlPullParser parser, boolean forRestore)
+            throws XmlPullParserException, IOException {
+        int type = parser.getEventType();
+        if (type != XmlPullParser.START_TAG) return;
+        String tag = parser.getName();
+        if (!TAG_RANKING.equals(tag)) return;
+        // Clobber groups and channels with the xml, but don't delete other data that wasn't present
+        // at the time of serialization.
+        mRestoredWithoutUids.clear();
+        while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) {
+            tag = parser.getName();
+            if (type == XmlPullParser.END_TAG && TAG_RANKING.equals(tag)) {
+                return;
+            }
+            if (type == XmlPullParser.START_TAG) {
+                if (TAG_PACKAGE.equals(tag)) {
+                    int uid = XmlUtils.readIntAttribute(parser, ATT_UID,
+                            PackagePreferences.UNKNOWN_UID);
+                    String name = parser.getAttributeValue(null, ATT_NAME);
+                    if (!TextUtils.isEmpty(name)) {
+                        if (forRestore) {
+                            try {
+                                //TODO: http://b/22388012
+                                uid = mPm.getPackageUidAsUser(name,
+                                        UserHandle.USER_SYSTEM);
+                            } catch (PackageManager.NameNotFoundException e) {
+                                // noop
+                            }
+                        }
+
+                        PackagePreferences r = getOrCreatePackagePreferences(name, uid,
+                                XmlUtils.readIntAttribute(
+                                        parser, ATT_IMPORTANCE, DEFAULT_IMPORTANCE),
+                                XmlUtils.readIntAttribute(parser, ATT_PRIORITY, DEFAULT_PRIORITY),
+                                XmlUtils.readIntAttribute(
+                                        parser, ATT_VISIBILITY, DEFAULT_VISIBILITY),
+                                XmlUtils.readBooleanAttribute(
+                                        parser, ATT_SHOW_BADGE, DEFAULT_SHOW_BADGE));
+                        r.importance = XmlUtils.readIntAttribute(
+                                parser, ATT_IMPORTANCE, DEFAULT_IMPORTANCE);
+                        r.priority = XmlUtils.readIntAttribute(
+                                parser, ATT_PRIORITY, DEFAULT_PRIORITY);
+                        r.visibility = XmlUtils.readIntAttribute(
+                                parser, ATT_VISIBILITY, DEFAULT_VISIBILITY);
+                        r.showBadge = XmlUtils.readBooleanAttribute(
+                                parser, ATT_SHOW_BADGE, DEFAULT_SHOW_BADGE);
+                        r.lockedAppFields = XmlUtils.readIntAttribute(parser,
+                                ATT_APP_USER_LOCKED_FIELDS, DEFAULT_LOCKED_APP_FIELDS);
+
+                        final int innerDepth = parser.getDepth();
+                        while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
+                                && (type != XmlPullParser.END_TAG
+                                || parser.getDepth() > innerDepth)) {
+                            if (type == XmlPullParser.END_TAG || type == XmlPullParser.TEXT) {
+                                continue;
+                            }
+
+                            String tagName = parser.getName();
+                            // Channel groups
+                            if (TAG_GROUP.equals(tagName)) {
+                                String id = parser.getAttributeValue(null, ATT_ID);
+                                CharSequence groupName = parser.getAttributeValue(null, ATT_NAME);
+                                if (!TextUtils.isEmpty(id)) {
+                                    NotificationChannelGroup group
+                                            = new NotificationChannelGroup(id, groupName);
+                                    group.populateFromXml(parser);
+                                    r.groups.put(id, group);
+                                }
+                            }
+                            // Channels
+                            if (TAG_CHANNEL.equals(tagName)) {
+                                String id = parser.getAttributeValue(null, ATT_ID);
+                                String channelName = parser.getAttributeValue(null, ATT_NAME);
+                                int channelImportance = XmlUtils.readIntAttribute(
+                                        parser, ATT_IMPORTANCE, DEFAULT_IMPORTANCE);
+                                if (!TextUtils.isEmpty(id) && !TextUtils.isEmpty(channelName)) {
+                                    NotificationChannel channel = new NotificationChannel(id,
+                                            channelName, channelImportance);
+                                    if (forRestore) {
+                                        channel.populateFromXmlForRestore(parser, mContext);
+                                    } else {
+                                        channel.populateFromXml(parser);
+                                    }
+                                    r.channels.put(id, channel);
+                                }
+                            }
+                        }
+
+                        try {
+                            deleteDefaultChannelIfNeeded(r);
+                        } catch (PackageManager.NameNotFoundException e) {
+                            Slog.e(TAG, "deleteDefaultChannelIfNeeded - Exception: " + e);
+                        }
+                    }
+                }
+            }
+        }
+        throw new IllegalStateException("Failed to reach END_DOCUMENT");
+    }
+
+    private PackagePreferences getPackagePreferences(String pkg, int uid) {
+        final String key = packagePreferencesKey(pkg, uid);
+        synchronized (mPackagePreferencess) {
+            return mPackagePreferencess.get(key);
+        }
+    }
+
+    private PackagePreferences getOrCreatePackagePreferences(String pkg, int uid) {
+        return getOrCreatePackagePreferences(pkg, uid,
+                DEFAULT_IMPORTANCE, DEFAULT_PRIORITY, DEFAULT_VISIBILITY, DEFAULT_SHOW_BADGE);
+    }
+
+    private PackagePreferences getOrCreatePackagePreferences(String pkg, int uid, int importance,
+            int priority, int visibility, boolean showBadge) {
+        final String key = packagePreferencesKey(pkg, uid);
+        synchronized (mPackagePreferencess) {
+            PackagePreferences
+                    r = (uid == PackagePreferences.UNKNOWN_UID) ? mRestoredWithoutUids.get(pkg)
+                    : mPackagePreferencess.get(key);
+            if (r == null) {
+                r = new PackagePreferences();
+                r.pkg = pkg;
+                r.uid = uid;
+                r.importance = importance;
+                r.priority = priority;
+                r.visibility = visibility;
+                r.showBadge = showBadge;
+
+                try {
+                    createDefaultChannelIfNeeded(r);
+                } catch (PackageManager.NameNotFoundException e) {
+                    Slog.e(TAG, "createDefaultChannelIfNeeded - Exception: " + e);
+                }
+
+                if (r.uid == PackagePreferences.UNKNOWN_UID) {
+                    mRestoredWithoutUids.put(pkg, r);
+                } else {
+                    mPackagePreferencess.put(key, r);
+                }
+            }
+            return r;
+        }
+    }
+
+    private boolean shouldHaveDefaultChannel(PackagePreferences r) throws
+            PackageManager.NameNotFoundException {
+        final int userId = UserHandle.getUserId(r.uid);
+        final ApplicationInfo applicationInfo =
+                mPm.getApplicationInfoAsUser(r.pkg, 0, userId);
+        if (applicationInfo.targetSdkVersion >= Build.VERSION_CODES.O) {
+            // O apps should not have the default channel.
+            return false;
+        }
+
+        // Otherwise, this app should have the default channel.
+        return true;
+    }
+
+    private void deleteDefaultChannelIfNeeded(PackagePreferences r) throws
+            PackageManager.NameNotFoundException {
+        if (!r.channels.containsKey(NotificationChannel.DEFAULT_CHANNEL_ID)) {
+            // Not present
+            return;
+        }
+
+        if (shouldHaveDefaultChannel(r)) {
+            // Keep the default channel until upgraded.
+            return;
+        }
+
+        // Remove Default Channel.
+        r.channels.remove(NotificationChannel.DEFAULT_CHANNEL_ID);
+    }
+
+    private void createDefaultChannelIfNeeded(PackagePreferences r) throws
+            PackageManager.NameNotFoundException {
+        if (r.channels.containsKey(NotificationChannel.DEFAULT_CHANNEL_ID)) {
+            r.channels.get(NotificationChannel.DEFAULT_CHANNEL_ID).setName(mContext.getString(
+                    com.android.internal.R.string.default_notification_channel_label));
+            return;
+        }
+
+        if (!shouldHaveDefaultChannel(r)) {
+            // Keep the default channel until upgraded.
+            return;
+        }
+
+        // Create Default Channel
+        NotificationChannel channel;
+        channel = new NotificationChannel(
+                NotificationChannel.DEFAULT_CHANNEL_ID,
+                mContext.getString(R.string.default_notification_channel_label),
+                r.importance);
+        channel.setBypassDnd(r.priority == Notification.PRIORITY_MAX);
+        channel.setLockscreenVisibility(r.visibility);
+        if (r.importance != NotificationManager.IMPORTANCE_UNSPECIFIED) {
+            channel.lockFields(NotificationChannel.USER_LOCKED_IMPORTANCE);
+        }
+        if (r.priority != DEFAULT_PRIORITY) {
+            channel.lockFields(NotificationChannel.USER_LOCKED_PRIORITY);
+        }
+        if (r.visibility != DEFAULT_VISIBILITY) {
+            channel.lockFields(NotificationChannel.USER_LOCKED_VISIBILITY);
+        }
+        r.channels.put(channel.getId(), channel);
+    }
+
+    public void writeXml(XmlSerializer out, boolean forBackup) throws IOException {
+        out.startTag(null, TAG_RANKING);
+        out.attribute(null, ATT_VERSION, Integer.toString(XML_VERSION));
+
+        synchronized (mPackagePreferencess) {
+            final int N = mPackagePreferencess.size();
+            for (int i = 0; i < N; i++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(i);
+                //TODO: http://b/22388012
+                if (forBackup && UserHandle.getUserId(r.uid) != UserHandle.USER_SYSTEM) {
+                    continue;
+                }
+                final boolean hasNonDefaultSettings =
+                        r.importance != DEFAULT_IMPORTANCE
+                                || r.priority != DEFAULT_PRIORITY
+                                || r.visibility != DEFAULT_VISIBILITY
+                                || r.showBadge != DEFAULT_SHOW_BADGE
+                                || r.lockedAppFields != DEFAULT_LOCKED_APP_FIELDS
+                                || r.channels.size() > 0
+                                || r.groups.size() > 0;
+                if (hasNonDefaultSettings) {
+                    out.startTag(null, TAG_PACKAGE);
+                    out.attribute(null, ATT_NAME, r.pkg);
+                    if (r.importance != DEFAULT_IMPORTANCE) {
+                        out.attribute(null, ATT_IMPORTANCE, Integer.toString(r.importance));
+                    }
+                    if (r.priority != DEFAULT_PRIORITY) {
+                        out.attribute(null, ATT_PRIORITY, Integer.toString(r.priority));
+                    }
+                    if (r.visibility != DEFAULT_VISIBILITY) {
+                        out.attribute(null, ATT_VISIBILITY, Integer.toString(r.visibility));
+                    }
+                    out.attribute(null, ATT_SHOW_BADGE, Boolean.toString(r.showBadge));
+                    out.attribute(null, ATT_APP_USER_LOCKED_FIELDS,
+                            Integer.toString(r.lockedAppFields));
+
+                    if (!forBackup) {
+                        out.attribute(null, ATT_UID, Integer.toString(r.uid));
+                    }
+
+                    for (NotificationChannelGroup group : r.groups.values()) {
+                        group.writeXml(out);
+                    }
+
+                    for (NotificationChannel channel : r.channels.values()) {
+                        if (forBackup) {
+                            if (!channel.isDeleted()) {
+                                channel.writeXmlForBackup(out, mContext);
+                            }
+                        } else {
+                            channel.writeXml(out);
+                        }
+                    }
+
+                    out.endTag(null, TAG_PACKAGE);
+                }
+            }
+        }
+        out.endTag(null, TAG_RANKING);
+    }
+
+    /**
+     * Gets importance.
+     */
+    @Override
+    public int getImportance(String packageName, int uid) {
+        return getOrCreatePackagePreferences(packageName, uid).importance;
+    }
+
+
+    /**
+     * Returns whether the importance of the corresponding notification is user-locked and shouldn't
+     * be adjusted by an assistant (via means of a blocking helper, for example). For the channel
+     * locking field, see {@link NotificationChannel#USER_LOCKED_IMPORTANCE}.
+     */
+    public boolean getIsAppImportanceLocked(String packageName, int uid) {
+        int userLockedFields = getOrCreatePackagePreferences(packageName, uid).lockedAppFields;
+        return (userLockedFields & LockableAppFields.USER_LOCKED_IMPORTANCE) != 0;
+    }
+
+    @Override
+    public boolean canShowBadge(String packageName, int uid) {
+        return getOrCreatePackagePreferences(packageName, uid).showBadge;
+    }
+
+    @Override
+    public void setShowBadge(String packageName, int uid, boolean showBadge) {
+        getOrCreatePackagePreferences(packageName, uid).showBadge = showBadge;
+        updateConfig();
+    }
+
+    @Override
+    public boolean isGroupBlocked(String packageName, int uid, String groupId) {
+        if (groupId == null) {
+            return false;
+        }
+        PackagePreferences r = getOrCreatePackagePreferences(packageName, uid);
+        NotificationChannelGroup group = r.groups.get(groupId);
+        if (group == null) {
+            return false;
+        }
+        return group.isBlocked();
+    }
+
+    int getPackagePriority(String pkg, int uid) {
+        return getOrCreatePackagePreferences(pkg, uid).priority;
+    }
+
+    int getPackageVisibility(String pkg, int uid) {
+        return getOrCreatePackagePreferences(pkg, uid).visibility;
+    }
+
+    @Override
+    public void createNotificationChannelGroup(String pkg, int uid, NotificationChannelGroup group,
+            boolean fromTargetApp) {
+        Preconditions.checkNotNull(pkg);
+        Preconditions.checkNotNull(group);
+        Preconditions.checkNotNull(group.getId());
+        Preconditions.checkNotNull(!TextUtils.isEmpty(group.getName()));
+        PackagePreferences r = getOrCreatePackagePreferences(pkg, uid);
+        if (r == null) {
+            throw new IllegalArgumentException("Invalid package");
+        }
+        final NotificationChannelGroup oldGroup = r.groups.get(group.getId());
+        if (!group.equals(oldGroup)) {
+            // will log for new entries as well as name/description changes
+            MetricsLogger.action(getChannelGroupLog(group.getId(), pkg));
+        }
+        if (oldGroup != null) {
+            group.setChannels(oldGroup.getChannels());
+
+            if (fromTargetApp) {
+                group.setBlocked(oldGroup.isBlocked());
+            }
+        }
+        r.groups.put(group.getId(), group);
+    }
+
+    @Override
+    public void createNotificationChannel(String pkg, int uid, NotificationChannel channel,
+            boolean fromTargetApp, boolean hasDndAccess) {
+        Preconditions.checkNotNull(pkg);
+        Preconditions.checkNotNull(channel);
+        Preconditions.checkNotNull(channel.getId());
+        Preconditions.checkArgument(!TextUtils.isEmpty(channel.getName()));
+        PackagePreferences r = getOrCreatePackagePreferences(pkg, uid);
+        if (r == null) {
+            throw new IllegalArgumentException("Invalid package");
+        }
+        if (channel.getGroup() != null && !r.groups.containsKey(channel.getGroup())) {
+            throw new IllegalArgumentException("NotificationChannelGroup doesn't exist");
+        }
+        if (NotificationChannel.DEFAULT_CHANNEL_ID.equals(channel.getId())) {
+            throw new IllegalArgumentException("Reserved id");
+        }
+        NotificationChannel existing = r.channels.get(channel.getId());
+        // Keep most of the existing settings
+        if (existing != null && fromTargetApp) {
+            if (existing.isDeleted()) {
+                existing.setDeleted(false);
+
+                // log a resurrected channel as if it's new again
+                MetricsLogger.action(getChannelLog(channel, pkg).setType(
+                        com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_OPEN));
+            }
+
+            existing.setName(channel.getName().toString());
+            existing.setDescription(channel.getDescription());
+            existing.setBlockableSystem(channel.isBlockableSystem());
+            if (existing.getGroup() == null) {
+                existing.setGroup(channel.getGroup());
+            }
+
+            // Apps are allowed to downgrade channel importance if the user has not changed any
+            // fields on this channel yet.
+            if (existing.getUserLockedFields() == 0 &&
+                    channel.getImportance() < existing.getImportance()) {
+                existing.setImportance(channel.getImportance());
+            }
+
+            // system apps and dnd access apps can bypass dnd if the user hasn't changed any
+            // fields on the channel yet
+            if (existing.getUserLockedFields() == 0 && hasDndAccess) {
+                boolean bypassDnd = channel.canBypassDnd();
+                existing.setBypassDnd(bypassDnd);
+
+                if (bypassDnd != mAreChannelsBypassingDnd) {
+                    updateChannelsBypassingDnd();
+                }
+            }
+
+            updateConfig();
+            return;
+        }
+        if (channel.getImportance() < IMPORTANCE_NONE
+                || channel.getImportance() > NotificationManager.IMPORTANCE_MAX) {
+            throw new IllegalArgumentException("Invalid importance level");
+        }
+
+        // Reset fields that apps aren't allowed to set.
+        if (fromTargetApp && !hasDndAccess) {
+            channel.setBypassDnd(r.priority == Notification.PRIORITY_MAX);
+        }
+        if (fromTargetApp) {
+            channel.setLockscreenVisibility(r.visibility);
+        }
+        clearLockedFields(channel);
+        if (channel.getLockscreenVisibility() == Notification.VISIBILITY_PUBLIC) {
+            channel.setLockscreenVisibility(
+                    NotificationListenerService.Ranking.VISIBILITY_NO_OVERRIDE);
+        }
+        if (!r.showBadge) {
+            channel.setShowBadge(false);
+        }
+
+        r.channels.put(channel.getId(), channel);
+        if (channel.canBypassDnd() != mAreChannelsBypassingDnd) {
+            updateChannelsBypassingDnd();
+        }
+        MetricsLogger.action(getChannelLog(channel, pkg).setType(
+                com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_OPEN));
+    }
+
+    void clearLockedFields(NotificationChannel channel) {
+        channel.unlockFields(channel.getUserLockedFields());
+    }
+
+    @Override
+    public void updateNotificationChannel(String pkg, int uid, NotificationChannel updatedChannel,
+            boolean fromUser) {
+        Preconditions.checkNotNull(updatedChannel);
+        Preconditions.checkNotNull(updatedChannel.getId());
+        PackagePreferences r = getOrCreatePackagePreferences(pkg, uid);
+        if (r == null) {
+            throw new IllegalArgumentException("Invalid package");
+        }
+        NotificationChannel channel = r.channels.get(updatedChannel.getId());
+        if (channel == null || channel.isDeleted()) {
+            throw new IllegalArgumentException("Channel does not exist");
+        }
+        if (updatedChannel.getLockscreenVisibility() == Notification.VISIBILITY_PUBLIC) {
+            updatedChannel.setLockscreenVisibility(
+                    NotificationListenerService.Ranking.VISIBILITY_NO_OVERRIDE);
+        }
+        if (!fromUser) {
+            updatedChannel.unlockFields(updatedChannel.getUserLockedFields());
+        }
+        if (fromUser) {
+            updatedChannel.lockFields(channel.getUserLockedFields());
+            lockFieldsForUpdate(channel, updatedChannel);
+        }
+        r.channels.put(updatedChannel.getId(), updatedChannel);
+
+        if (NotificationChannel.DEFAULT_CHANNEL_ID.equals(updatedChannel.getId())) {
+            // copy settings to app level so they are inherited by new channels
+            // when the app migrates
+            r.importance = updatedChannel.getImportance();
+            r.priority = updatedChannel.canBypassDnd()
+                    ? Notification.PRIORITY_MAX : Notification.PRIORITY_DEFAULT;
+            r.visibility = updatedChannel.getLockscreenVisibility();
+            r.showBadge = updatedChannel.canShowBadge();
+        }
+
+        if (!channel.equals(updatedChannel)) {
+            // only log if there are real changes
+            MetricsLogger.action(getChannelLog(updatedChannel, pkg));
+        }
+
+        if (updatedChannel.canBypassDnd() != mAreChannelsBypassingDnd) {
+            updateChannelsBypassingDnd();
+        }
+        updateConfig();
+    }
+
+    @Override
+    public NotificationChannel getNotificationChannel(String pkg, int uid, String channelId,
+            boolean includeDeleted) {
+        Preconditions.checkNotNull(pkg);
+        PackagePreferences r = getOrCreatePackagePreferences(pkg, uid);
+        if (r == null) {
+            return null;
+        }
+        if (channelId == null) {
+            channelId = NotificationChannel.DEFAULT_CHANNEL_ID;
+        }
+        final NotificationChannel nc = r.channels.get(channelId);
+        if (nc != null && (includeDeleted || !nc.isDeleted())) {
+            return nc;
+        }
+        return null;
+    }
+
+    @Override
+    public void deleteNotificationChannel(String pkg, int uid, String channelId) {
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return;
+        }
+        NotificationChannel channel = r.channels.get(channelId);
+        if (channel != null) {
+            channel.setDeleted(true);
+            LogMaker lm = getChannelLog(channel, pkg);
+            lm.setType(com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_CLOSE);
+            MetricsLogger.action(lm);
+
+            if (mAreChannelsBypassingDnd && channel.canBypassDnd()) {
+                updateChannelsBypassingDnd();
+            }
+        }
+    }
+
+    @Override
+    @VisibleForTesting
+    public void permanentlyDeleteNotificationChannel(String pkg, int uid, String channelId) {
+        Preconditions.checkNotNull(pkg);
+        Preconditions.checkNotNull(channelId);
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return;
+        }
+        r.channels.remove(channelId);
+    }
+
+    @Override
+    public void permanentlyDeleteNotificationChannels(String pkg, int uid) {
+        Preconditions.checkNotNull(pkg);
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return;
+        }
+        int N = r.channels.size() - 1;
+        for (int i = N; i >= 0; i--) {
+            String key = r.channels.keyAt(i);
+            if (!NotificationChannel.DEFAULT_CHANNEL_ID.equals(key)) {
+                r.channels.remove(key);
+            }
+        }
+    }
+
+    public NotificationChannelGroup getNotificationChannelGroupWithChannels(String pkg,
+            int uid, String groupId, boolean includeDeleted) {
+        Preconditions.checkNotNull(pkg);
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null || groupId == null || !r.groups.containsKey(groupId)) {
+            return null;
+        }
+        NotificationChannelGroup group = r.groups.get(groupId).clone();
+        group.setChannels(new ArrayList<>());
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (includeDeleted || !nc.isDeleted()) {
+                if (groupId.equals(nc.getGroup())) {
+                    group.addChannel(nc);
+                }
+            }
+        }
+        return group;
+    }
+
+    public NotificationChannelGroup getNotificationChannelGroup(String groupId, String pkg,
+            int uid) {
+        Preconditions.checkNotNull(pkg);
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return null;
+        }
+        return r.groups.get(groupId);
+    }
+
+    @Override
+    public ParceledListSlice<NotificationChannelGroup> getNotificationChannelGroups(String pkg,
+            int uid, boolean includeDeleted, boolean includeNonGrouped) {
+        Preconditions.checkNotNull(pkg);
+        Map<String, NotificationChannelGroup> groups = new ArrayMap<>();
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return ParceledListSlice.emptyList();
+        }
+        NotificationChannelGroup nonGrouped = new NotificationChannelGroup(null, null);
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (includeDeleted || !nc.isDeleted()) {
+                if (nc.getGroup() != null) {
+                    if (r.groups.get(nc.getGroup()) != null) {
+                        NotificationChannelGroup ncg = groups.get(nc.getGroup());
+                        if (ncg == null) {
+                            ncg = r.groups.get(nc.getGroup()).clone();
+                            ncg.setChannels(new ArrayList<>());
+                            groups.put(nc.getGroup(), ncg);
+
+                        }
+                        ncg.addChannel(nc);
+                    }
+                } else {
+                    nonGrouped.addChannel(nc);
+                }
+            }
+        }
+        if (includeNonGrouped && nonGrouped.getChannels().size() > 0) {
+            groups.put(null, nonGrouped);
+        }
+        return new ParceledListSlice<>(new ArrayList<>(groups.values()));
+    }
+
+    public List<NotificationChannel> deleteNotificationChannelGroup(String pkg, int uid,
+            String groupId) {
+        List<NotificationChannel> deletedChannels = new ArrayList<>();
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null || TextUtils.isEmpty(groupId)) {
+            return deletedChannels;
+        }
+
+        r.groups.remove(groupId);
+
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (groupId.equals(nc.getGroup())) {
+                nc.setDeleted(true);
+                deletedChannels.add(nc);
+            }
+        }
+        return deletedChannels;
+    }
+
+    @Override
+    public Collection<NotificationChannelGroup> getNotificationChannelGroups(String pkg,
+            int uid) {
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return new ArrayList<>();
+        }
+        return r.groups.values();
+    }
+
+    @Override
+    public ParceledListSlice<NotificationChannel> getNotificationChannels(String pkg, int uid,
+            boolean includeDeleted) {
+        Preconditions.checkNotNull(pkg);
+        List<NotificationChannel> channels = new ArrayList<>();
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return ParceledListSlice.emptyList();
+        }
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (includeDeleted || !nc.isDeleted()) {
+                channels.add(nc);
+            }
+        }
+        return new ParceledListSlice<>(channels);
+    }
+
+    /**
+     * True for pre-O apps that only have the default channel, or pre O apps that have no
+     * channels yet. This method will create the default channel for pre-O apps that don't have it.
+     * Should never be true for O+ targeting apps, but that's enforced on boot/when an app
+     * upgrades.
+     */
+    public boolean onlyHasDefaultChannel(String pkg, int uid) {
+        PackagePreferences r = getOrCreatePackagePreferences(pkg, uid);
+        if (r.channels.size() == 1
+                && r.channels.containsKey(NotificationChannel.DEFAULT_CHANNEL_ID)) {
+            return true;
+        }
+        return false;
+    }
+
+    public int getDeletedChannelCount(String pkg, int uid) {
+        Preconditions.checkNotNull(pkg);
+        int deletedCount = 0;
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return deletedCount;
+        }
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (nc.isDeleted()) {
+                deletedCount++;
+            }
+        }
+        return deletedCount;
+    }
+
+    public int getBlockedChannelCount(String pkg, int uid) {
+        Preconditions.checkNotNull(pkg);
+        int blockedCount = 0;
+        PackagePreferences r = getPackagePreferences(pkg, uid);
+        if (r == null) {
+            return blockedCount;
+        }
+        int N = r.channels.size();
+        for (int i = 0; i < N; i++) {
+            final NotificationChannel nc = r.channels.valueAt(i);
+            if (!nc.isDeleted() && IMPORTANCE_NONE == nc.getImportance()) {
+                blockedCount++;
+            }
+        }
+        return blockedCount;
+    }
+
+    public int getBlockedAppCount(int userId) {
+        int count = 0;
+        synchronized (mPackagePreferencess) {
+            final int N = mPackagePreferencess.size();
+            for (int i = 0; i < N; i++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(i);
+                if (userId == UserHandle.getUserId(r.uid)
+                        && r.importance == IMPORTANCE_NONE) {
+                    count++;
+                }
+            }
+        }
+        return count;
+    }
+
+    public void updateChannelsBypassingDnd() {
+        synchronized (mPackagePreferencess) {
+            final int numPackagePreferencess = mPackagePreferencess.size();
+            for (int PackagePreferencesIndex = 0; PackagePreferencesIndex < numPackagePreferencess;
+                    PackagePreferencesIndex++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(PackagePreferencesIndex);
+                final int numChannels = r.channels.size();
+
+                for (int channelIndex = 0; channelIndex < numChannels; channelIndex++) {
+                    NotificationChannel channel = r.channels.valueAt(channelIndex);
+                    if (!channel.isDeleted() && channel.canBypassDnd()) {
+                        // If any channel bypasses DND, synchronize state and return early.
+                        if (!mAreChannelsBypassingDnd) {
+                            mAreChannelsBypassingDnd = true;
+                            updateZenPolicy(true);
+                        }
+                        return;
+                    }
+                }
+            }
+        }
+
+        // If no channels bypass DND, update the zen policy once to disable DND bypass.
+        if (mAreChannelsBypassingDnd) {
+            mAreChannelsBypassingDnd = false;
+            updateZenPolicy(false);
+        }
+    }
+
+    public void updateZenPolicy(boolean areChannelsBypassingDnd) {
+        NotificationManager.Policy policy = mZenModeHelper.getNotificationPolicy();
+        mZenModeHelper.setNotificationPolicy(new NotificationManager.Policy(
+                policy.priorityCategories, policy.priorityCallSenders,
+                policy.priorityMessageSenders, policy.suppressedVisualEffects,
+                (areChannelsBypassingDnd ? NotificationManager.Policy.STATE_CHANNELS_BYPASSING_DND
+                        : 0)));
+    }
+
+    public boolean areChannelsBypassingDnd() {
+        return mAreChannelsBypassingDnd;
+    }
+
+    /**
+     * Sets importance.
+     */
+    @Override
+    public void setImportance(String pkgName, int uid, int importance) {
+        getOrCreatePackagePreferences(pkgName, uid).importance = importance;
+        updateConfig();
+    }
+
+    public void setEnabled(String packageName, int uid, boolean enabled) {
+        boolean wasEnabled = getImportance(packageName, uid) != IMPORTANCE_NONE;
+        if (wasEnabled == enabled) {
+            return;
+        }
+        setImportance(packageName, uid,
+                enabled ? DEFAULT_IMPORTANCE : IMPORTANCE_NONE);
+    }
+
+    /**
+     * Sets whether any notifications from the app, represented by the given {@code pkgName} and
+     * {@code uid}, have their importance locked by the user. Locked notifications don't get
+     * considered for sentiment adjustments (and thus never show a blocking helper).
+     */
+    public void setAppImportanceLocked(String packageName, int uid) {
+        PackagePreferences PackagePreferences = getOrCreatePackagePreferences(packageName, uid);
+        if ((PackagePreferences.lockedAppFields & LockableAppFields.USER_LOCKED_IMPORTANCE) != 0) {
+            return;
+        }
+
+        PackagePreferences.lockedAppFields =
+                PackagePreferences.lockedAppFields | LockableAppFields.USER_LOCKED_IMPORTANCE;
+        updateConfig();
+    }
+
+    @VisibleForTesting
+    void lockFieldsForUpdate(NotificationChannel original, NotificationChannel update) {
+        if (original.canBypassDnd() != update.canBypassDnd()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_PRIORITY);
+        }
+        if (original.getLockscreenVisibility() != update.getLockscreenVisibility()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_VISIBILITY);
+        }
+        if (original.getImportance() != update.getImportance()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_IMPORTANCE);
+        }
+        if (original.shouldShowLights() != update.shouldShowLights()
+                || original.getLightColor() != update.getLightColor()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_LIGHTS);
+        }
+        if (!Objects.equals(original.getSound(), update.getSound())) {
+            update.lockFields(NotificationChannel.USER_LOCKED_SOUND);
+        }
+        if (!Arrays.equals(original.getVibrationPattern(), update.getVibrationPattern())
+                || original.shouldVibrate() != update.shouldVibrate()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_VIBRATION);
+        }
+        if (original.canShowBadge() != update.canShowBadge()) {
+            update.lockFields(NotificationChannel.USER_LOCKED_SHOW_BADGE);
+        }
+    }
+
+    public void dump(PrintWriter pw, String prefix,
+            @NonNull NotificationManagerService.DumpFilter filter) {
+        pw.print(prefix);
+        pw.println("per-package config:");
+
+        pw.println("PackagePreferencess:");
+        synchronized (mPackagePreferencess) {
+            dumpPackagePreferencess(pw, prefix, filter, mPackagePreferencess);
+        }
+        pw.println("Restored without uid:");
+        dumpPackagePreferencess(pw, prefix, filter, mRestoredWithoutUids);
+    }
+
+    public void dump(ProtoOutputStream proto,
+            @NonNull NotificationManagerService.DumpFilter filter) {
+        synchronized (mPackagePreferencess) {
+            dumpPackagePreferencess(proto, RankingHelperProto.RECORDS, filter,
+                    mPackagePreferencess);
+        }
+        dumpPackagePreferencess(proto, RankingHelperProto.RECORDS_RESTORED_WITHOUT_UID, filter,
+                mRestoredWithoutUids);
+    }
+
+    private static void dumpPackagePreferencess(PrintWriter pw, String prefix,
+            @NonNull NotificationManagerService.DumpFilter filter,
+            ArrayMap<String, PackagePreferences> PackagePreferencess) {
+        final int N = PackagePreferencess.size();
+        for (int i = 0; i < N; i++) {
+            final PackagePreferences r = PackagePreferencess.valueAt(i);
+            if (filter.matches(r.pkg)) {
+                pw.print(prefix);
+                pw.print("  AppSettings: ");
+                pw.print(r.pkg);
+                pw.print(" (");
+                pw.print(r.uid == PackagePreferences.UNKNOWN_UID ? "UNKNOWN_UID"
+                        : Integer.toString(r.uid));
+                pw.print(')');
+                if (r.importance != DEFAULT_IMPORTANCE) {
+                    pw.print(" importance=");
+                    pw.print(NotificationListenerService.Ranking.importanceToString(r.importance));
+                }
+                if (r.priority != DEFAULT_PRIORITY) {
+                    pw.print(" priority=");
+                    pw.print(Notification.priorityToString(r.priority));
+                }
+                if (r.visibility != DEFAULT_VISIBILITY) {
+                    pw.print(" visibility=");
+                    pw.print(Notification.visibilityToString(r.visibility));
+                }
+                pw.print(" showBadge=");
+                pw.print(Boolean.toString(r.showBadge));
+                pw.println();
+                for (NotificationChannel channel : r.channels.values()) {
+                    pw.print(prefix);
+                    channel.dump(pw, "    ", filter.redact);
+                }
+                for (NotificationChannelGroup group : r.groups.values()) {
+                    pw.print(prefix);
+                    pw.print("  ");
+                    pw.print("  ");
+                    pw.println(group);
+                }
+            }
+        }
+    }
+
+    private static void dumpPackagePreferencess(ProtoOutputStream proto, long fieldId,
+            @NonNull NotificationManagerService.DumpFilter filter,
+            ArrayMap<String, PackagePreferences> PackagePreferencess) {
+        final int N = PackagePreferencess.size();
+        long fToken;
+        for (int i = 0; i < N; i++) {
+            final PackagePreferences r = PackagePreferencess.valueAt(i);
+            if (filter.matches(r.pkg)) {
+                fToken = proto.start(fieldId);
+
+                proto.write(RankingHelperProto.RecordProto.PACKAGE, r.pkg);
+                proto.write(RankingHelperProto.RecordProto.UID, r.uid);
+                proto.write(RankingHelperProto.RecordProto.IMPORTANCE, r.importance);
+                proto.write(RankingHelperProto.RecordProto.PRIORITY, r.priority);
+                proto.write(RankingHelperProto.RecordProto.VISIBILITY, r.visibility);
+                proto.write(RankingHelperProto.RecordProto.SHOW_BADGE, r.showBadge);
+
+                for (NotificationChannel channel : r.channels.values()) {
+                    channel.writeToProto(proto, RankingHelperProto.RecordProto.CHANNELS);
+                }
+                for (NotificationChannelGroup group : r.groups.values()) {
+                    group.writeToProto(proto, RankingHelperProto.RecordProto.CHANNEL_GROUPS);
+                }
+
+                proto.end(fToken);
+            }
+        }
+    }
+
+    public JSONObject dumpJson(NotificationManagerService.DumpFilter filter) {
+        JSONObject ranking = new JSONObject();
+        JSONArray PackagePreferencess = new JSONArray();
+        try {
+            ranking.put("noUid", mRestoredWithoutUids.size());
+        } catch (JSONException e) {
+            // pass
+        }
+        synchronized (mPackagePreferencess) {
+            final int N = mPackagePreferencess.size();
+            for (int i = 0; i < N; i++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(i);
+                if (filter == null || filter.matches(r.pkg)) {
+                    JSONObject PackagePreferences = new JSONObject();
+                    try {
+                        PackagePreferences.put("userId", UserHandle.getUserId(r.uid));
+                        PackagePreferences.put("packageName", r.pkg);
+                        if (r.importance != DEFAULT_IMPORTANCE) {
+                            PackagePreferences.put("importance",
+                                    NotificationListenerService.Ranking.importanceToString(
+                                            r.importance));
+                        }
+                        if (r.priority != DEFAULT_PRIORITY) {
+                            PackagePreferences.put("priority",
+                                    Notification.priorityToString(r.priority));
+                        }
+                        if (r.visibility != DEFAULT_VISIBILITY) {
+                            PackagePreferences.put("visibility",
+                                    Notification.visibilityToString(r.visibility));
+                        }
+                        if (r.showBadge != DEFAULT_SHOW_BADGE) {
+                            PackagePreferences.put("showBadge", Boolean.valueOf(r.showBadge));
+                        }
+                        JSONArray channels = new JSONArray();
+                        for (NotificationChannel channel : r.channels.values()) {
+                            channels.put(channel.toJson());
+                        }
+                        PackagePreferences.put("channels", channels);
+                        JSONArray groups = new JSONArray();
+                        for (NotificationChannelGroup group : r.groups.values()) {
+                            groups.put(group.toJson());
+                        }
+                        PackagePreferences.put("groups", groups);
+                    } catch (JSONException e) {
+                        // pass
+                    }
+                    PackagePreferencess.put(PackagePreferences);
+                }
+            }
+        }
+        try {
+            ranking.put("PackagePreferencess", PackagePreferencess);
+        } catch (JSONException e) {
+            // pass
+        }
+        return ranking;
+    }
+
+    /**
+     * Dump only the ban information as structured JSON for the stats collector.
+     *
+     * This is intentionally redundant with {#link dumpJson} because the old
+     * scraper will expect this format.
+     *
+     * @param filter
+     * @return
+     */
+    public JSONArray dumpBansJson(NotificationManagerService.DumpFilter filter) {
+        JSONArray bans = new JSONArray();
+        Map<Integer, String> packageBans = getPackageBans();
+        for (Map.Entry<Integer, String> ban : packageBans.entrySet()) {
+            final int userId = UserHandle.getUserId(ban.getKey());
+            final String packageName = ban.getValue();
+            if (filter == null || filter.matches(packageName)) {
+                JSONObject banJson = new JSONObject();
+                try {
+                    banJson.put("userId", userId);
+                    banJson.put("packageName", packageName);
+                } catch (JSONException e) {
+                    e.printStackTrace();
+                }
+                bans.put(banJson);
+            }
+        }
+        return bans;
+    }
+
+    public Map<Integer, String> getPackageBans() {
+        synchronized (mPackagePreferencess) {
+            final int N = mPackagePreferencess.size();
+            ArrayMap<Integer, String> packageBans = new ArrayMap<>(N);
+            for (int i = 0; i < N; i++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(i);
+                if (r.importance == IMPORTANCE_NONE) {
+                    packageBans.put(r.uid, r.pkg);
+                }
+            }
+
+            return packageBans;
+        }
+    }
+
+    /**
+     * Dump only the channel information as structured JSON for the stats collector.
+     *
+     * This is intentionally redundant with {#link dumpJson} because the old
+     * scraper will expect this format.
+     *
+     * @param filter
+     * @return
+     */
+    public JSONArray dumpChannelsJson(NotificationManagerService.DumpFilter filter) {
+        JSONArray channels = new JSONArray();
+        Map<String, Integer> packageChannels = getPackageChannels();
+        for (Map.Entry<String, Integer> channelCount : packageChannels.entrySet()) {
+            final String packageName = channelCount.getKey();
+            if (filter == null || filter.matches(packageName)) {
+                JSONObject channelCountJson = new JSONObject();
+                try {
+                    channelCountJson.put("packageName", packageName);
+                    channelCountJson.put("channelCount", channelCount.getValue());
+                } catch (JSONException e) {
+                    e.printStackTrace();
+                }
+                channels.put(channelCountJson);
+            }
+        }
+        return channels;
+    }
+
+    private Map<String, Integer> getPackageChannels() {
+        ArrayMap<String, Integer> packageChannels = new ArrayMap<>();
+        synchronized (mPackagePreferencess) {
+            for (int i = 0; i < mPackagePreferencess.size(); i++) {
+                final PackagePreferences r = mPackagePreferencess.valueAt(i);
+                int channelCount = 0;
+                for (int j = 0; j < r.channels.size(); j++) {
+                    if (!r.channels.valueAt(j).isDeleted()) {
+                        channelCount++;
+                    }
+                }
+                packageChannels.put(r.pkg, channelCount);
+            }
+        }
+        return packageChannels;
+    }
+
+    public void onUserRemoved(int userId) {
+        synchronized (mPackagePreferencess) {
+            int N = mPackagePreferencess.size();
+            for (int i = N - 1; i >= 0; i--) {
+                PackagePreferences PackagePreferences = mPackagePreferencess.valueAt(i);
+                if (UserHandle.getUserId(PackagePreferences.uid) == userId) {
+                    mPackagePreferencess.removeAt(i);
+                }
+            }
+        }
+    }
+
+    protected void onLocaleChanged(Context context, int userId) {
+        synchronized (mPackagePreferencess) {
+            int N = mPackagePreferencess.size();
+            for (int i = 0; i < N; i++) {
+                PackagePreferences PackagePreferences = mPackagePreferencess.valueAt(i);
+                if (UserHandle.getUserId(PackagePreferences.uid) == userId) {
+                    if (PackagePreferences.channels.containsKey(
+                            NotificationChannel.DEFAULT_CHANNEL_ID)) {
+                        PackagePreferences.channels.get(
+                                NotificationChannel.DEFAULT_CHANNEL_ID).setName(
+                                context.getResources().getString(
+                                        R.string.default_notification_channel_label));
+                    }
+                }
+            }
+        }
+    }
+
+    public void onPackagesChanged(boolean removingPackage, int changeUserId, String[] pkgList,
+            int[] uidList) {
+        if (pkgList == null || pkgList.length == 0) {
+            return; // nothing to do
+        }
+        boolean updated = false;
+        if (removingPackage) {
+            // Remove notification settings for uninstalled package
+            int size = Math.min(pkgList.length, uidList.length);
+            for (int i = 0; i < size; i++) {
+                final String pkg = pkgList[i];
+                final int uid = uidList[i];
+                synchronized (mPackagePreferencess) {
+                    mPackagePreferencess.remove(packagePreferencesKey(pkg, uid));
+                }
+                mRestoredWithoutUids.remove(pkg);
+                updated = true;
+            }
+        } else {
+            for (String pkg : pkgList) {
+                // Package install
+                final PackagePreferences r = mRestoredWithoutUids.get(pkg);
+                if (r != null) {
+                    try {
+                        r.uid = mPm.getPackageUidAsUser(r.pkg, changeUserId);
+                        mRestoredWithoutUids.remove(pkg);
+                        synchronized (mPackagePreferencess) {
+                            mPackagePreferencess.put(packagePreferencesKey(r.pkg, r.uid), r);
+                        }
+                        updated = true;
+                    } catch (PackageManager.NameNotFoundException e) {
+                        // noop
+                    }
+                }
+                // Package upgrade
+                try {
+                    PackagePreferences fullPackagePreferences = getPackagePreferences(pkg,
+                            mPm.getPackageUidAsUser(pkg, changeUserId));
+                    if (fullPackagePreferences != null) {
+                        createDefaultChannelIfNeeded(fullPackagePreferences);
+                        deleteDefaultChannelIfNeeded(fullPackagePreferences);
+                    }
+                } catch (PackageManager.NameNotFoundException e) {
+                }
+            }
+        }
+
+        if (updated) {
+            updateConfig();
+        }
+    }
+
+    private LogMaker getChannelLog(NotificationChannel channel, String pkg) {
+        return new LogMaker(
+                com.android.internal.logging.nano.MetricsProto.MetricsEvent
+                        .ACTION_NOTIFICATION_CHANNEL)
+                .setType(com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_UPDATE)
+                .setPackageName(pkg)
+                .addTaggedData(
+                        com.android.internal.logging.nano.MetricsProto.MetricsEvent
+                                .FIELD_NOTIFICATION_CHANNEL_ID,
+                        channel.getId())
+                .addTaggedData(
+                        com.android.internal.logging.nano.MetricsProto.MetricsEvent
+                                .FIELD_NOTIFICATION_CHANNEL_IMPORTANCE,
+                        channel.getImportance());
+    }
+
+    private LogMaker getChannelGroupLog(String groupId, String pkg) {
+        return new LogMaker(
+                com.android.internal.logging.nano.MetricsProto.MetricsEvent
+                        .ACTION_NOTIFICATION_CHANNEL_GROUP)
+                .setType(com.android.internal.logging.nano.MetricsProto.MetricsEvent.TYPE_UPDATE)
+                .addTaggedData(
+                        com.android.internal.logging.nano.MetricsProto.MetricsEvent
+                                .FIELD_NOTIFICATION_CHANNEL_GROUP_ID,
+                        groupId)
+                .setPackageName(pkg);
+    }
+
+
+    public void updateBadgingEnabled() {
+        if (mBadgingEnabled == null) {
+            mBadgingEnabled = new SparseBooleanArray();
+        }
+        boolean changed = false;
+        // update the cached values
+        for (int index = 0; index < mBadgingEnabled.size(); index++) {
+            int userId = mBadgingEnabled.keyAt(index);
+            final boolean oldValue = mBadgingEnabled.get(userId);
+            final boolean newValue = Settings.Secure.getIntForUser(mContext.getContentResolver(),
+                    Settings.Secure.NOTIFICATION_BADGING,
+                    DEFAULT_SHOW_BADGE ? 1 : 0, userId) != 0;
+            mBadgingEnabled.put(userId, newValue);
+            changed |= oldValue != newValue;
+        }
+        if (changed) {
+            updateConfig();
+        }
+    }
+
+    public boolean badgingEnabled(UserHandle userHandle) {
+        int userId = userHandle.getIdentifier();
+        if (userId == UserHandle.USER_ALL) {
+            return false;
+        }
+        if (mBadgingEnabled.indexOfKey(userId) < 0) {
+            mBadgingEnabled.put(userId,
+                    Settings.Secure.getIntForUser(mContext.getContentResolver(),
+                            Settings.Secure.NOTIFICATION_BADGING,
+                            DEFAULT_SHOW_BADGE ? 1 : 0, userId) != 0);
+        }
+        return mBadgingEnabled.get(userId, DEFAULT_SHOW_BADGE);
+    }
+
+    private void updateConfig() {
+        mRankingHandler.requestSort();
+    }
+
+    private static String packagePreferencesKey(String pkg, int uid) {
+        return pkg + "|" + uid;
+    }
+
+    private static class PackagePreferences {
+        static int UNKNOWN_UID = UserHandle.USER_NULL;
+
+        String pkg;
+        int uid = UNKNOWN_UID;
+        int importance = DEFAULT_IMPORTANCE;
+        int priority = DEFAULT_PRIORITY;
+        int visibility = DEFAULT_VISIBILITY;
+        boolean showBadge = DEFAULT_SHOW_BADGE;
+        int lockedAppFields = DEFAULT_LOCKED_APP_FIELDS;
+
+        ArrayMap<String, NotificationChannel> channels = new ArrayMap<>();
+        Map<String, NotificationChannelGroup> groups = new ConcurrentHashMap<>();
+    }
+}