Merge "Move ZenModesBackend to SettingsLib." into main
diff --git a/packages/SettingsLib/res/drawable/ic_do_not_disturb_on_24dp.xml b/packages/SettingsLib/res/drawable/ic_do_not_disturb_on_24dp.xml
new file mode 100644
index 0000000..06c0d8c
--- /dev/null
+++ b/packages/SettingsLib/res/drawable/ic_do_not_disturb_on_24dp.xml
@@ -0,0 +1,28 @@
+<!--
+    Copyright (C) 2024 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.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0"
+        android:tint="?android:attr/colorControlNormal">
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12,2C6.48,2 2,6.48 2,12c0,5.52 4.48,10 10,10c5.52,0 10,-4.48 10,-10C22,6.48 17.52,2 12,2zM12,20c-4.41,0 -8,-3.59 -8,-8c0,-4.41 3.59,-8 8,-8c4.41,0 8,3.59 8,8C20,16.41 16.41,20 12,20z"/>
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M7,11h10v2h-10z"/>
+</vector>
diff --git a/packages/SettingsLib/res/values/strings.xml b/packages/SettingsLib/res/values/strings.xml
index d373201..27c386e 100644
--- a/packages/SettingsLib/res/values/strings.xml
+++ b/packages/SettingsLib/res/values/strings.xml
@@ -1361,6 +1361,9 @@
     <!-- Keywords for setting screen for controlling apps that can schedule alarms [CHAR LIMIT=100] -->
     <string name="keywords_alarms_and_reminders">schedule, alarm, reminder, clock</string>
 
+    <!-- Sound: Title for the Do not Disturb option and associated settings page. [CHAR LIMIT=50]-->
+    <string name="zen_mode_settings_title">Do Not Disturb</string>
+
     <!--  Do not disturb: Label for button in enable zen dialog that will turn on zen mode. [CHAR LIMIT=30] -->
     <string name="zen_mode_enable_dialog_turn_on">Turn on</string>
     <!-- Do not disturb: Title for the Do not Disturb dialog to turn on Do not disturb. [CHAR LIMIT=50]-->
@@ -1387,6 +1390,9 @@
     <!-- Do not disturb: Duration option to always have DND on until it is manually turned off [CHAR LIMIT=60] -->
     <string name="zen_mode_forever">Until you turn off</string>
 
+    <!-- [CHAR LIMIT=50] Zen mode settings: placeholder for a Contact name when the name is empty -->
+    <string name="zen_mode_starred_contacts_empty_name">(No name)</string>
+
     <!-- time label for event have that happened very recently [CHAR LIMIT=60] -->
     <string name="time_unit_just_now">Just now</string>
 
diff --git a/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenIconLoader.java b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenIconLoader.java
new file mode 100644
index 0000000..3f19830
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenIconLoader.java
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import static com.google.common.util.concurrent.Futures.immediateFuture;
+
+import static java.util.Objects.requireNonNull;
+
+import android.annotation.Nullable;
+import android.app.AutomaticZenRule;
+import android.content.Context;
+import android.graphics.drawable.AdaptiveIconDrawable;
+import android.graphics.drawable.ColorDrawable;
+import android.graphics.drawable.Drawable;
+import android.graphics.drawable.InsetDrawable;
+import android.service.notification.SystemZenRules;
+import android.text.TextUtils;
+import android.util.Log;
+import android.util.LruCache;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.VisibleForTesting;
+import androidx.appcompat.content.res.AppCompatResources;
+
+import com.google.common.util.concurrent.FluentFuture;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.ListeningExecutorService;
+import com.google.common.util.concurrent.MoreExecutors;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+public class ZenIconLoader {
+
+    private static final String TAG = "ZenIconLoader";
+
+    private static final Drawable MISSING = new ColorDrawable();
+
+    @Nullable // Until first usage
+    private static ZenIconLoader sInstance;
+
+    private final LruCache<String, Drawable> mCache;
+    private final ListeningExecutorService mBackgroundExecutor;
+
+    public static ZenIconLoader getInstance() {
+        if (sInstance == null) {
+            sInstance = new ZenIconLoader();
+        }
+        return sInstance;
+    }
+
+    private ZenIconLoader() {
+        this(Executors.newFixedThreadPool(4));
+    }
+
+    @VisibleForTesting
+    ZenIconLoader(ExecutorService backgroundExecutor) {
+        mCache = new LruCache<>(50);
+        mBackgroundExecutor =
+                MoreExecutors.listeningDecorator(backgroundExecutor);
+    }
+
+    @NonNull
+    ListenableFuture<Drawable> getIcon(Context context, @NonNull AutomaticZenRule rule) {
+        if (rule.getIconResId() == 0) {
+            return Futures.immediateFuture(getFallbackIcon(context, rule.getType()));
+        }
+
+        return FluentFuture.from(loadIcon(context, rule.getPackageName(), rule.getIconResId()))
+                .transform(icon ->
+                                icon != null ? icon : getFallbackIcon(context, rule.getType()),
+                        MoreExecutors.directExecutor());
+    }
+
+    @NonNull
+    private ListenableFuture</* @Nullable */ Drawable> loadIcon(Context context, String pkg,
+            int iconResId) {
+        String cacheKey = pkg + ":" + iconResId;
+        synchronized (mCache) {
+            Drawable cachedValue = mCache.get(cacheKey);
+            if (cachedValue != null) {
+                return immediateFuture(cachedValue != MISSING ? cachedValue : null);
+            }
+        }
+
+        return FluentFuture.from(mBackgroundExecutor.submit(() -> {
+            if (TextUtils.isEmpty(pkg) || SystemZenRules.PACKAGE_ANDROID.equals(pkg)) {
+                return context.getDrawable(iconResId);
+            } else {
+                Context appContext = context.createPackageContext(pkg, 0);
+                Drawable appDrawable = AppCompatResources.getDrawable(appContext, iconResId);
+                return getMonochromeIconIfPresent(appDrawable);
+            }
+        })).catching(Exception.class, ex -> {
+            // If we cannot resolve the icon, then store MISSING in the cache below, so
+            // we don't try again.
+            Log.e(TAG, "Error while loading icon " + cacheKey, ex);
+            return null;
+        }, MoreExecutors.directExecutor()).transform(drawable -> {
+            synchronized (mCache) {
+                mCache.put(cacheKey, drawable != null ? drawable : MISSING);
+            }
+            return drawable;
+        }, MoreExecutors.directExecutor());
+    }
+
+    private static Drawable getFallbackIcon(Context context, int ruleType) {
+        int iconResIdFromType = switch (ruleType) {
+            case AutomaticZenRule.TYPE_UNKNOWN ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_unknown;
+            case AutomaticZenRule.TYPE_OTHER ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_other;
+            case AutomaticZenRule.TYPE_SCHEDULE_TIME ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_schedule_time;
+            case AutomaticZenRule.TYPE_SCHEDULE_CALENDAR ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_schedule_calendar;
+            case AutomaticZenRule.TYPE_BEDTIME ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_bedtime;
+            case AutomaticZenRule.TYPE_DRIVING ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_driving;
+            case AutomaticZenRule.TYPE_IMMERSIVE ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_immersive;
+            case AutomaticZenRule.TYPE_THEATER ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_theater;
+            case AutomaticZenRule.TYPE_MANAGED ->
+                    com.android.internal.R.drawable.ic_zen_mode_type_managed;
+            default -> com.android.internal.R.drawable.ic_zen_mode_type_unknown;
+        };
+        return requireNonNull(context.getDrawable(iconResIdFromType));
+    }
+
+    private static Drawable getMonochromeIconIfPresent(Drawable icon) {
+        // For created rules, the app should've provided a monochrome Drawable. However, implicit
+        // rules have the app's icon, which is not -- but might have a monochrome layer. Thus
+        // we choose it, if present.
+        if (icon instanceof AdaptiveIconDrawable adaptiveIcon) {
+            if (adaptiveIcon.getMonochrome() != null) {
+                // Wrap with negative inset => scale icon (inspired from BaseIconFactory)
+                return new InsetDrawable(adaptiveIcon.getMonochrome(),
+                        -2.0f * AdaptiveIconDrawable.getExtraInsetFraction());
+            }
+        }
+        return icon;
+    }
+}
diff --git a/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenMode.java b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenMode.java
new file mode 100644
index 0000000..598db2a9
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenMode.java
@@ -0,0 +1,257 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import static android.app.NotificationManager.INTERRUPTION_FILTER_ALL;
+import static android.app.NotificationManager.INTERRUPTION_FILTER_PRIORITY;
+import static android.service.notification.SystemZenRules.getTriggerDescriptionForScheduleEvent;
+import static android.service.notification.SystemZenRules.getTriggerDescriptionForScheduleTime;
+import static android.service.notification.ZenModeConfig.tryParseEventConditionId;
+import static android.service.notification.ZenModeConfig.tryParseScheduleConditionId;
+
+import static com.google.common.base.Preconditions.checkState;
+
+import static java.util.Objects.requireNonNull;
+
+import android.annotation.SuppressLint;
+import android.app.AutomaticZenRule;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.service.notification.SystemZenRules;
+import android.service.notification.ZenDeviceEffects;
+import android.service.notification.ZenModeConfig;
+import android.service.notification.ZenPolicy;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.android.settingslib.R;
+
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+
+import java.util.Objects;
+
+/**
+ * Represents either an {@link AutomaticZenRule} or the manual DND rule in a unified way.
+ *
+ * <p>It also adapts other rule features that we don't want to expose in the UI, such as
+ * interruption filters other than {@code PRIORITY}, rules without specific icons, etc.
+ */
+public class ZenMode {
+
+    private static final String TAG = "ZenMode";
+
+    public static final String MANUAL_DND_MODE_ID = "manual_dnd";
+
+    // Must match com.android.server.notification.ZenModeHelper#applyCustomPolicy.
+    private static final ZenPolicy POLICY_INTERRUPTION_FILTER_ALARMS =
+            new ZenPolicy.Builder()
+                    .disallowAllSounds()
+                    .allowAlarms(true)
+                    .allowMedia(true)
+                    .allowPriorityChannels(false)
+                    .build();
+
+    // Must match com.android.server.notification.ZenModeHelper#applyCustomPolicy.
+    private static final ZenPolicy POLICY_INTERRUPTION_FILTER_NONE =
+            new ZenPolicy.Builder()
+                    .disallowAllSounds()
+                    .hideAllVisualEffects()
+                    .allowPriorityChannels(false)
+                    .build();
+
+    private final String mId;
+    private AutomaticZenRule mRule;
+    private final boolean mIsActive;
+    private final boolean mIsManualDnd;
+
+    public ZenMode(String id, AutomaticZenRule rule, boolean isActive) {
+        this(id, rule, isActive, false);
+    }
+
+    private ZenMode(String id, AutomaticZenRule rule, boolean isActive, boolean isManualDnd) {
+        mId = id;
+        mRule = rule;
+        mIsActive = isActive;
+        mIsManualDnd = isManualDnd;
+    }
+
+    public static ZenMode manualDndMode(AutomaticZenRule manualRule, boolean isActive) {
+        return new ZenMode(MANUAL_DND_MODE_ID, manualRule, isActive, true);
+    }
+
+    @NonNull
+    public String getId() {
+        return mId;
+    }
+
+    @NonNull
+    public AutomaticZenRule getRule() {
+        return mRule;
+    }
+
+    @NonNull
+    public ListenableFuture<Drawable> getIcon(@NonNull Context context,
+            @NonNull ZenIconLoader iconLoader) {
+        if (mIsManualDnd) {
+            return Futures.immediateFuture(requireNonNull(
+                    context.getDrawable(R.drawable.ic_do_not_disturb_on_24dp)));
+        }
+
+        return iconLoader.getIcon(context, mRule);
+    }
+
+    @NonNull
+    public ZenPolicy getPolicy() {
+        switch (mRule.getInterruptionFilter()) {
+            case INTERRUPTION_FILTER_PRIORITY:
+            case NotificationManager.INTERRUPTION_FILTER_ALL:
+                return requireNonNull(mRule.getZenPolicy());
+
+            case NotificationManager.INTERRUPTION_FILTER_ALARMS:
+                return POLICY_INTERRUPTION_FILTER_ALARMS;
+
+            case NotificationManager.INTERRUPTION_FILTER_NONE:
+                return POLICY_INTERRUPTION_FILTER_NONE;
+
+            case NotificationManager.INTERRUPTION_FILTER_UNKNOWN:
+            default:
+                Log.wtf(TAG, "Rule " + mId + " with unexpected interruptionFilter "
+                        + mRule.getInterruptionFilter());
+                return requireNonNull(mRule.getZenPolicy());
+        }
+    }
+
+    /**
+     * Updates the {@link ZenPolicy} of the associated {@link AutomaticZenRule} based on the
+     * supplied policy. In some cases this involves conversions, so that the following call
+     * to {@link #getPolicy} might return a different policy from the one supplied here.
+     */
+    @SuppressLint("WrongConstant")
+    public void setPolicy(@NonNull ZenPolicy policy) {
+        ZenPolicy currentPolicy = getPolicy();
+        if (currentPolicy.equals(policy)) {
+            return;
+        }
+
+        if (mRule.getInterruptionFilter() == INTERRUPTION_FILTER_ALL) {
+            Log.wtf(TAG, "Able to change policy without filtering being enabled");
+        }
+
+        // If policy is customized from any of the "special" ones, make the rule PRIORITY.
+        if (mRule.getInterruptionFilter() != INTERRUPTION_FILTER_PRIORITY) {
+            mRule.setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY);
+        }
+        mRule.setZenPolicy(policy);
+    }
+
+    @NonNull
+    public ZenDeviceEffects getDeviceEffects() {
+        return mRule.getDeviceEffects() != null
+                ? mRule.getDeviceEffects()
+                : new ZenDeviceEffects.Builder().build();
+    }
+
+    public void setCustomModeConditionId(Context context, Uri conditionId) {
+        checkState(SystemZenRules.PACKAGE_ANDROID.equals(mRule.getPackageName()),
+                "Trying to change condition of non-system-owned rule %s (to %s)",
+                mRule, conditionId);
+
+        Uri oldCondition = mRule.getConditionId();
+        mRule.setConditionId(conditionId);
+
+        ZenModeConfig.ScheduleInfo scheduleInfo = tryParseScheduleConditionId(conditionId);
+        if (scheduleInfo != null) {
+            mRule.setType(AutomaticZenRule.TYPE_SCHEDULE_TIME);
+            mRule.setOwner(ZenModeConfig.getScheduleConditionProvider());
+            mRule.setTriggerDescription(
+                    getTriggerDescriptionForScheduleTime(context, scheduleInfo));
+            return;
+        }
+
+        ZenModeConfig.EventInfo eventInfo = tryParseEventConditionId(conditionId);
+        if (eventInfo != null) {
+            mRule.setType(AutomaticZenRule.TYPE_SCHEDULE_CALENDAR);
+            mRule.setOwner(ZenModeConfig.getEventConditionProvider());
+            mRule.setTriggerDescription(getTriggerDescriptionForScheduleEvent(context, eventInfo));
+            return;
+        }
+
+        if (ZenModeConfig.isValidCustomManualConditionId(conditionId)) {
+            mRule.setType(AutomaticZenRule.TYPE_OTHER);
+            mRule.setOwner(ZenModeConfig.getCustomManualConditionProvider());
+            mRule.setTriggerDescription("");
+            return;
+        }
+
+        Log.wtf(TAG, String.format(
+                "Changed condition of rule %s (%s -> %s) but cannot recognize which kind of "
+                        + "condition it was!",
+                mRule, oldCondition, conditionId));
+    }
+
+    public boolean canEditName() {
+        return !isManualDnd();
+    }
+
+    public boolean canEditIcon() {
+        return !isManualDnd();
+    }
+
+    public boolean canBeDeleted() {
+        return !isManualDnd();
+    }
+
+    public boolean isManualDnd() {
+        return mIsManualDnd;
+    }
+
+    public boolean isActive() {
+        return mIsActive;
+    }
+
+    public boolean isSystemOwned() {
+        return SystemZenRules.PACKAGE_ANDROID.equals(mRule.getPackageName());
+    }
+
+    @AutomaticZenRule.Type
+    public int getType() {
+        return mRule.getType();
+    }
+
+    @Override
+    public boolean equals(@Nullable Object obj) {
+        return obj instanceof ZenMode other
+                && mId.equals(other.mId)
+                && mRule.equals(other.mRule)
+                && mIsActive == other.mIsActive;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(mId, mRule, mIsActive);
+    }
+
+    @Override
+    public String toString() {
+        return mId + "(" + (mIsActive ? "active" : "inactive") + ") -> " + mRule;
+    }
+}
diff --git a/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenModesBackend.java b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenModesBackend.java
new file mode 100644
index 0000000..d07d743
--- /dev/null
+++ b/packages/SettingsLib/src/com/android/settingslib/notification/modes/ZenModesBackend.java
@@ -0,0 +1,207 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import android.annotation.Nullable;
+import android.app.ActivityManager;
+import android.app.AutomaticZenRule;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.net.Uri;
+import android.provider.Settings;
+import android.service.notification.Condition;
+import android.service.notification.ZenModeConfig;
+import android.util.Log;
+
+import com.android.settingslib.R;
+
+import java.time.Duration;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Class used for Settings-NMS interactions related to Mode management.
+ *
+ * <p>This class converts {@link AutomaticZenRule} instances, as well as the manual zen mode,
+ * into the unified {@link ZenMode} format.
+ */
+public class ZenModesBackend {
+
+    private static final String TAG = "ZenModeBackend";
+
+    @Nullable // Until first usage
+    private static ZenModesBackend sInstance;
+
+    private final NotificationManager mNotificationManager;
+
+    private final Context mContext;
+
+    public static ZenModesBackend getInstance(Context context) {
+        if (sInstance == null) {
+            sInstance = new ZenModesBackend(context.getApplicationContext());
+        }
+        return sInstance;
+    }
+
+    ZenModesBackend(Context context) {
+        mContext = context;
+        mNotificationManager = context.getSystemService(NotificationManager.class);
+    }
+
+    public List<ZenMode> getModes() {
+        ArrayList<ZenMode> modes = new ArrayList<>();
+        ZenModeConfig currentConfig = mNotificationManager.getZenModeConfig();
+        modes.add(getManualDndMode(currentConfig));
+
+        Map<String, AutomaticZenRule> zenRules = mNotificationManager.getAutomaticZenRules();
+        for (Map.Entry<String, AutomaticZenRule> zenRuleEntry : zenRules.entrySet()) {
+            String ruleId = zenRuleEntry.getKey();
+            modes.add(new ZenMode(ruleId, zenRuleEntry.getValue(),
+                    isRuleActive(ruleId, currentConfig)));
+        }
+
+        modes.sort((l, r) -> {
+            if (l.isManualDnd()) {
+                return -1;
+            } else if (r.isManualDnd()) {
+                return 1;
+            }
+            return l.getRule().getName().compareTo(r.getRule().getName());
+        });
+
+        return modes;
+    }
+
+    @Nullable
+    public ZenMode getMode(String id) {
+        ZenModeConfig currentConfig = mNotificationManager.getZenModeConfig();
+        if (ZenMode.MANUAL_DND_MODE_ID.equals(id)) {
+            return getManualDndMode(currentConfig);
+        } else {
+            AutomaticZenRule rule = mNotificationManager.getAutomaticZenRule(id);
+            if (rule == null) {
+                return null;
+            }
+            return new ZenMode(id, rule, isRuleActive(id, currentConfig));
+        }
+    }
+
+    private ZenMode getManualDndMode(ZenModeConfig config) {
+        ZenModeConfig.ZenRule manualRule = config.manualRule;
+        // TODO: b/333682392 - Replace with final strings for name & trigger description
+        AutomaticZenRule manualDndRule = new AutomaticZenRule.Builder(
+                mContext.getString(R.string.zen_mode_settings_title), manualRule.conditionId)
+                .setType(manualRule.type)
+                .setZenPolicy(manualRule.zenPolicy)
+                .setDeviceEffects(manualRule.zenDeviceEffects)
+                .setManualInvocationAllowed(manualRule.allowManualInvocation)
+                .setConfigurationActivity(null) // No further settings
+                .setInterruptionFilter(NotificationManager.INTERRUPTION_FILTER_PRIORITY)
+                .build();
+
+        return ZenMode.manualDndMode(manualDndRule, config != null && config.isManualActive());
+    }
+
+    private static boolean isRuleActive(String id, ZenModeConfig config) {
+        if (config == null) {
+            // shouldn't happen if the config is coming from NM, but be safe
+            return false;
+        }
+        ZenModeConfig.ZenRule configRule = config.automaticRules.get(id);
+        return configRule != null && configRule.isAutomaticActive();
+    }
+
+    public void updateMode(ZenMode mode) {
+        if (mode.isManualDnd()) {
+            try {
+                NotificationManager.Policy dndPolicy =
+                        new ZenModeConfig().toNotificationPolicy(mode.getPolicy());
+                mNotificationManager.setNotificationPolicy(dndPolicy, /* fromUser= */ true);
+
+                mNotificationManager.setManualZenRuleDeviceEffects(
+                        mode.getRule().getDeviceEffects());
+            } catch (Exception e) {
+                Log.w(TAG, "Error updating manual mode", e);
+            }
+        } else {
+            mNotificationManager.updateAutomaticZenRule(mode.getId(), mode.getRule(),
+                    /* fromUser= */ true);
+        }
+    }
+
+    public void activateMode(ZenMode mode, @Nullable Duration forDuration) {
+        if (mode.isManualDnd()) {
+            Uri durationConditionId = null;
+            if (forDuration != null) {
+                durationConditionId = ZenModeConfig.toTimeCondition(mContext,
+                        (int) forDuration.toMinutes(), ActivityManager.getCurrentUser(), true).id;
+            }
+            mNotificationManager.setZenMode(Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS,
+                    durationConditionId, TAG, /* fromUser= */ true);
+
+        } else {
+            if (forDuration != null) {
+                throw new IllegalArgumentException(
+                        "Only the manual DND mode can be activated for a specific duration");
+            }
+            mNotificationManager.setAutomaticZenRuleState(mode.getId(),
+                    new Condition(mode.getRule().getConditionId(), "", Condition.STATE_TRUE,
+                            Condition.SOURCE_USER_ACTION));
+        }
+    }
+
+    public void deactivateMode(ZenMode mode) {
+        if (mode.isManualDnd()) {
+            // When calling with fromUser=true this will not snooze other modes.
+            mNotificationManager.setZenMode(Settings.Global.ZEN_MODE_OFF, null, TAG,
+                    /* fromUser= */ true);
+        } else {
+            // TODO: b/333527800 - This should (potentially) snooze the rule if it was active.
+            mNotificationManager.setAutomaticZenRuleState(mode.getId(),
+                    new Condition(mode.getRule().getConditionId(), "", Condition.STATE_FALSE,
+                            Condition.SOURCE_USER_ACTION));
+        }
+    }
+
+    public void removeMode(ZenMode mode) {
+        if (!mode.canBeDeleted()) {
+            throw new IllegalArgumentException("Mode " + mode + " cannot be deleted!");
+        }
+        mNotificationManager.removeAutomaticZenRule(mode.getId(), /* fromUser= */ true);
+    }
+
+    /**
+     * Creates a new custom mode with the provided {@code name}. The mode will be "manual" (i.e.
+     * not have a schedule), this can be later updated by the user in the mode settings page.
+     *
+     * @return the created mode. Only {@code null} if creation failed due to an internal error
+     */
+    @Nullable
+    public ZenMode addCustomMode(String name) {
+        AutomaticZenRule rule = new AutomaticZenRule.Builder(name,
+                ZenModeConfig.toCustomManualConditionId())
+                .setPackage(ZenModeConfig.getCustomManualConditionProvider().getPackageName())
+                .setType(AutomaticZenRule.TYPE_OTHER)
+                .setOwner(ZenModeConfig.getCustomManualConditionProvider())
+                .setManualInvocationAllowed(true)
+                .build();
+
+        String ruleId = mNotificationManager.addAutomaticZenRule(rule);
+        return getMode(ruleId);
+    }
+}
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenIconLoaderTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenIconLoaderTest.java
new file mode 100644
index 0000000..20461e3
--- /dev/null
+++ b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenIconLoaderTest.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import static android.app.NotificationManager.INTERRUPTION_FILTER_PRIORITY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.app.AutomaticZenRule;
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.net.Uri;
+import android.service.notification.ZenPolicy;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.MoreExecutors;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(RobolectricTestRunner.class)
+public class ZenIconLoaderTest {
+
+    private Context mContext;
+    private ZenIconLoader mLoader;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application;
+        mLoader = new ZenIconLoader(MoreExecutors.newDirectExecutorService());
+    }
+
+    @Test
+    public void getIcon_systemOwnedRuleWithIcon_loads() throws Exception {
+        AutomaticZenRule systemRule = newRuleBuilder()
+                .setPackage("android")
+                .setIconResId(android.R.drawable.ic_media_play)
+                .build();
+
+        ListenableFuture<Drawable> loadFuture = mLoader.getIcon(mContext, systemRule);
+        assertThat(loadFuture.isDone()).isTrue();
+        assertThat(loadFuture.get()).isNotNull();
+    }
+
+    @Test
+    public void getIcon_ruleWithoutSpecificIcon_loadsFallback() throws Exception {
+        AutomaticZenRule rule = newRuleBuilder()
+                .setType(AutomaticZenRule.TYPE_DRIVING)
+                .setPackage("com.blah")
+                .build();
+
+        ListenableFuture<Drawable> loadFuture = mLoader.getIcon(mContext, rule);
+        assertThat(loadFuture.isDone()).isTrue();
+        assertThat(loadFuture.get()).isNotNull();
+    }
+
+    @Test
+    public void getIcon_ruleWithAppIconWithLoadFailure_loadsFallback() throws Exception {
+        AutomaticZenRule rule = newRuleBuilder()
+                .setType(AutomaticZenRule.TYPE_DRIVING)
+                .setPackage("com.blah")
+                .setIconResId(-123456)
+                .build();
+
+        ListenableFuture<Drawable> loadFuture = mLoader.getIcon(mContext, rule);
+        assertThat(loadFuture.get()).isNotNull();
+    }
+
+    private static AutomaticZenRule.Builder newRuleBuilder() {
+        return new AutomaticZenRule.Builder("Driving", Uri.parse("drive"))
+                .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                .setZenPolicy(new ZenPolicy.Builder().build());
+    }
+}
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModeTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModeTest.java
new file mode 100644
index 0000000..43aba45
--- /dev/null
+++ b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModeTest.java
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import static android.app.NotificationManager.INTERRUPTION_FILTER_ALARMS;
+import static android.app.NotificationManager.INTERRUPTION_FILTER_NONE;
+import static android.app.NotificationManager.INTERRUPTION_FILTER_PRIORITY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.app.AutomaticZenRule;
+import android.net.Uri;
+import android.service.notification.ZenPolicy;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+@RunWith(RobolectricTestRunner.class)
+public class ZenModeTest {
+
+    private static final ZenPolicy ZEN_POLICY = new ZenPolicy.Builder().allowAllSounds().build();
+
+    private static final AutomaticZenRule ZEN_RULE =
+            new AutomaticZenRule.Builder("Driving", Uri.parse("drive"))
+                    .setType(AutomaticZenRule.TYPE_DRIVING)
+                    .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                    .setZenPolicy(ZEN_POLICY)
+                    .build();
+
+    @Test
+    public void testBasicMethods() {
+        ZenMode zenMode = new ZenMode("id", ZEN_RULE, true);
+
+        assertThat(zenMode.getId()).isEqualTo("id");
+        assertThat(zenMode.getRule()).isEqualTo(ZEN_RULE);
+        assertThat(zenMode.isManualDnd()).isFalse();
+        assertThat(zenMode.canBeDeleted()).isTrue();
+        assertThat(zenMode.isActive()).isTrue();
+
+        ZenMode manualMode = ZenMode.manualDndMode(ZEN_RULE, false);
+        assertThat(manualMode.getId()).isEqualTo(ZenMode.MANUAL_DND_MODE_ID);
+        assertThat(manualMode.isManualDnd()).isTrue();
+        assertThat(manualMode.canBeDeleted()).isFalse();
+        assertThat(manualMode.isActive()).isFalse();
+    }
+
+    @Test
+    public void getPolicy_interruptionFilterPriority_returnsZenPolicy() {
+        ZenMode zenMode = new ZenMode("id", new AutomaticZenRule.Builder("Rule", Uri.EMPTY)
+                .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                .setZenPolicy(ZEN_POLICY)
+                .build(), false);
+
+        assertThat(zenMode.getPolicy()).isEqualTo(ZEN_POLICY);
+    }
+
+    @Test
+    public void getPolicy_interruptionFilterAlarms_returnsPolicyAllowingAlarms() {
+        ZenMode zenMode = new ZenMode("id", new AutomaticZenRule.Builder("Rule", Uri.EMPTY)
+                .setInterruptionFilter(INTERRUPTION_FILTER_ALARMS)
+                .setZenPolicy(ZEN_POLICY) // should be ignored
+                .build(), false);
+
+        assertThat(zenMode.getPolicy()).isEqualTo(
+                new ZenPolicy.Builder()
+                        .disallowAllSounds()
+                        .allowAlarms(true)
+                        .allowMedia(true)
+                        .allowPriorityChannels(false)
+                        .build());
+    }
+
+    @Test
+    public void getPolicy_interruptionFilterNone_returnsPolicyAllowingNothing() {
+        ZenMode zenMode = new ZenMode("id", new AutomaticZenRule.Builder("Rule", Uri.EMPTY)
+                .setInterruptionFilter(INTERRUPTION_FILTER_NONE)
+                .setZenPolicy(ZEN_POLICY) // should be ignored
+                .build(), false);
+
+        assertThat(zenMode.getPolicy()).isEqualTo(
+                new ZenPolicy.Builder()
+                        .disallowAllSounds()
+                        .hideAllVisualEffects()
+                        .allowPriorityChannels(false)
+                        .build());
+    }
+
+    @Test
+    public void setPolicy_setsInterruptionFilterPriority() {
+        ZenMode zenMode = new ZenMode("id", new AutomaticZenRule.Builder("Rule", Uri.EMPTY)
+                .setInterruptionFilter(INTERRUPTION_FILTER_ALARMS)
+                .build(), false);
+
+        zenMode.setPolicy(ZEN_POLICY);
+
+        assertThat(zenMode.getRule().getInterruptionFilter()).isEqualTo(
+                INTERRUPTION_FILTER_PRIORITY);
+        assertThat(zenMode.getPolicy()).isEqualTo(ZEN_POLICY);
+        assertThat(zenMode.getRule().getZenPolicy()).isEqualTo(ZEN_POLICY);
+    }
+}
diff --git a/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModesBackendTest.java b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModesBackendTest.java
new file mode 100644
index 0000000..7c7972d
--- /dev/null
+++ b/packages/SettingsLib/tests/robotests/src/com/android/settingslib/notification/modes/ZenModesBackendTest.java
@@ -0,0 +1,365 @@
+/*
+ * Copyright (C) 2024 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.settingslib.notification.modes;
+
+import static android.app.NotificationManager.INTERRUPTION_FILTER_PRIORITY;
+import static android.provider.Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS;
+import static android.provider.Settings.Global.ZEN_MODE_OFF;
+import static android.service.notification.Condition.SOURCE_UNKNOWN;
+import static android.service.notification.Condition.STATE_FALSE;
+import static android.service.notification.Condition.STATE_TRUE;
+import static android.service.notification.ZenPolicy.STATE_ALLOW;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.junit.Assert.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.app.AutomaticZenRule;
+import android.app.Flags;
+import android.app.NotificationManager;
+import android.app.NotificationManager.Policy;
+import android.content.Context;
+import android.net.Uri;
+import android.platform.test.annotations.EnableFlags;
+import android.platform.test.flag.junit.SetFlagsRule;
+import android.provider.Settings;
+import android.service.notification.Condition;
+import android.service.notification.ZenAdapters;
+import android.service.notification.ZenDeviceEffects;
+import android.service.notification.ZenModeConfig;
+import android.service.notification.ZenPolicy;
+
+import com.android.settingslib.R;
+
+import com.google.common.collect.ImmutableMap;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.shadows.ShadowApplication;
+
+import java.time.Duration;
+import java.util.List;
+
+@RunWith(RobolectricTestRunner.class)
+@EnableFlags(Flags.FLAG_MODES_UI)
+public class ZenModesBackendTest {
+
+    private static final String ZEN_RULE_ID = "rule";
+    private static final AutomaticZenRule ZEN_RULE =
+            new AutomaticZenRule.Builder("Driving", Uri.parse("drive"))
+                    .setType(AutomaticZenRule.TYPE_DRIVING)
+                    .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                    .setZenPolicy(new ZenPolicy.Builder().allowAllSounds().build())
+                    .build();
+
+    private static final AutomaticZenRule MANUAL_DND_RULE =
+            new AutomaticZenRule.Builder("Do Not Disturb", Uri.EMPTY)
+                    .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                    .setZenPolicy(new ZenPolicy.Builder().allowAllSounds().build())
+                    .build();
+
+    @Mock
+    private NotificationManager mNm;
+
+    private Context mContext;
+    private ZenModesBackend mBackend;
+
+    @Rule
+    public final SetFlagsRule mSetFlagsRule = new SetFlagsRule(
+            SetFlagsRule.DefaultInitValueType.DEVICE_DEFAULT);
+
+    // Helper methods to add active/inactive rule state to a config. Returns a copy.
+    private ZenModeConfig configWithManualRule(ZenModeConfig base, boolean active) {
+        ZenModeConfig out = base.copy();
+
+        if (active) {
+            out.manualRule.zenMode = ZEN_MODE_IMPORTANT_INTERRUPTIONS;
+            out.manualRule.condition =
+                    new Condition(out.manualRule.conditionId, "", STATE_TRUE, SOURCE_UNKNOWN);
+        } else {
+            out.manualRule.zenMode = ZEN_MODE_OFF;
+            out.manualRule.condition =
+                    new Condition(out.manualRule.conditionId, "", STATE_FALSE, SOURCE_UNKNOWN);
+        }
+        return out;
+    }
+
+    private ZenModeConfig configWithRule(ZenModeConfig base, String ruleId, AutomaticZenRule rule,
+            boolean active) {
+        ZenModeConfig out = base.copy();
+
+        // Note that there are many other fields of zenRule, but here we only set the ones
+        // relevant to determining whether or not it is active.
+        ZenModeConfig.ZenRule zenRule = new ZenModeConfig.ZenRule();
+        zenRule.pkg = "package";
+        zenRule.enabled = active;
+        zenRule.snoozing = false;
+        zenRule.condition = new Condition(rule.getConditionId(), "",
+                active ? Condition.STATE_TRUE : Condition.STATE_FALSE,
+                Condition.SOURCE_USER_ACTION);
+        out.automaticRules.put(ruleId, zenRule);
+
+        return out;
+    }
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        ShadowApplication shadowApplication = ShadowApplication.getInstance();
+        shadowApplication.setSystemService(Context.NOTIFICATION_SERVICE, mNm);
+
+        mContext = RuntimeEnvironment.application;
+        mBackend = new ZenModesBackend(mContext);
+
+        // Default catch-all case with no data. This isn't realistic, but tests below that rely
+        // on the config to get data on rules active will create those individually.
+        when(mNm.getZenModeConfig()).thenReturn(new ZenModeConfig());
+    }
+
+    @Test
+    public void getModes_containsManualDndAndZenRules() {
+        AutomaticZenRule rule2 = new AutomaticZenRule.Builder("Bedtime", Uri.parse("bed"))
+                .setType(AutomaticZenRule.TYPE_BEDTIME)
+                .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                .setZenPolicy(new ZenPolicy.Builder().disallowAllSounds().build())
+                .build();
+        Policy dndPolicy = new Policy(Policy.PRIORITY_CATEGORY_ALARMS,
+                Policy.PRIORITY_SENDERS_CONTACTS, Policy.PRIORITY_SENDERS_CONTACTS);
+        when(mNm.getAutomaticZenRules()).thenReturn(
+                ImmutableMap.of("rule1", ZEN_RULE, "rule2", rule2));
+        ZenModeConfig config = new ZenModeConfig();
+        config.applyNotificationPolicy(dndPolicy);
+        assertThat(config.manualRule.zenPolicy.getPriorityCategoryAlarms()).isEqualTo(STATE_ALLOW);
+        when(mNm.getZenModeConfig()).thenReturn(config);
+
+        List<ZenMode> modes = mBackend.getModes();
+
+        // all modes exist, but none of them are currently active
+        ZenPolicy zenPolicy = ZenAdapters.notificationPolicyToZenPolicy(dndPolicy);
+        assertThat(modes).containsExactly(
+                        ZenMode.manualDndMode(
+                                new AutomaticZenRule.Builder(
+                                        mContext.getString(R.string.zen_mode_settings_title),
+                                        Uri.EMPTY)
+                                        .setType(AutomaticZenRule.TYPE_OTHER)
+                                        .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                                        .setZenPolicy(zenPolicy)
+                                        .setManualInvocationAllowed(true)
+                                        .build(),
+                                false),
+                        new ZenMode("rule2", rule2, false),
+                        new ZenMode("rule1", ZEN_RULE, false))
+                .inOrder();
+    }
+
+    @Test
+    public void getMode_manualDnd_returnsMode() {
+        Policy dndPolicy = new Policy(Policy.PRIORITY_CATEGORY_ALARMS,
+                Policy.PRIORITY_SENDERS_CONTACTS, Policy.PRIORITY_SENDERS_CONTACTS);
+        ZenModeConfig config = new ZenModeConfig();
+        config.applyNotificationPolicy(dndPolicy);
+        when(mNm.getZenModeConfig()).thenReturn(config);
+
+        ZenMode mode = mBackend.getMode(ZenMode.MANUAL_DND_MODE_ID);
+
+        assertThat(mode).isEqualTo(
+                ZenMode.manualDndMode(
+                        new AutomaticZenRule.Builder(
+                                mContext.getString(R.string.zen_mode_settings_title), Uri.EMPTY)
+                                .setType(AutomaticZenRule.TYPE_OTHER)
+                                .setInterruptionFilter(INTERRUPTION_FILTER_PRIORITY)
+                                .setZenPolicy(ZenAdapters.notificationPolicyToZenPolicy(dndPolicy))
+                                .setManualInvocationAllowed(true)
+                                .build(), false));
+    }
+
+    @Test
+    public void getMode_zenRule_returnsMode() {
+        when(mNm.getAutomaticZenRule(eq(ZEN_RULE_ID))).thenReturn(ZEN_RULE);
+
+        ZenMode mode = mBackend.getMode(ZEN_RULE_ID);
+
+        assertThat(mode).isEqualTo(new ZenMode(ZEN_RULE_ID, ZEN_RULE, false));
+    }
+
+    @Test
+    public void getMode_missingRule_returnsNull() {
+        when(mNm.getAutomaticZenRule(any())).thenReturn(null);
+
+        ZenMode mode = mBackend.getMode(ZEN_RULE_ID);
+
+        assertThat(mode).isNull();
+        verify(mNm).getAutomaticZenRule(eq(ZEN_RULE_ID));
+    }
+
+    @Test
+    public void getMode_manualDnd_returnsCorrectActiveState() {
+        // Set up a base config with an active rule to make sure we're looking at the correct info
+        ZenModeConfig configWithActiveRule = configWithRule(new ZenModeConfig(), ZEN_RULE_ID,
+                ZEN_RULE, true);
+
+        // Equivalent to disallowAllSounds()
+        Policy dndPolicy = new Policy(0, 0, 0);
+        configWithActiveRule.applyNotificationPolicy(dndPolicy);
+        when(mNm.getZenModeConfig()).thenReturn(configWithActiveRule);
+
+        ZenMode mode = mBackend.getMode(ZenMode.MANUAL_DND_MODE_ID);
+
+        // By default, manual rule is inactive
+        assertThat(mode.isActive()).isFalse();
+
+        // Now the returned config will represent the manual rule being active
+        when(mNm.getZenModeConfig()).thenReturn(configWithManualRule(configWithActiveRule, true));
+        ZenMode activeMode = mBackend.getMode(ZenMode.MANUAL_DND_MODE_ID);
+        assertThat(activeMode.isActive()).isTrue();
+    }
+
+    @Test
+    public void getMode_zenRule_returnsCorrectActiveState() {
+        // Set up a base config that has an active manual rule and "rule2", to make sure we're
+        // looking at the correct rule's info.
+        ZenModeConfig configWithActiveRules = configWithRule(
+                configWithManualRule(new ZenModeConfig(), true),  // active manual rule
+                "rule2", ZEN_RULE, true);  // active rule 2
+
+        when(mNm.getAutomaticZenRule(eq(ZEN_RULE_ID))).thenReturn(ZEN_RULE);
+        when(mNm.getZenModeConfig()).thenReturn(
+                configWithRule(configWithActiveRules, ZEN_RULE_ID, ZEN_RULE, false));
+
+        // Round 1: the current config should indicate that the rule is not active
+        ZenMode mode = mBackend.getMode(ZEN_RULE_ID);
+        assertThat(mode.isActive()).isFalse();
+
+        when(mNm.getZenModeConfig()).thenReturn(
+                configWithRule(configWithActiveRules, ZEN_RULE_ID, ZEN_RULE, true));
+        ZenMode activeMode = mBackend.getMode(ZEN_RULE_ID);
+        assertThat(activeMode.isActive()).isTrue();
+    }
+
+    @Test
+    public void updateMode_manualDnd_setsDeviceEffects() throws Exception {
+        ZenMode manualDnd = ZenMode.manualDndMode(
+                new AutomaticZenRule.Builder("DND", Uri.EMPTY)
+                        .setZenPolicy(new ZenPolicy())
+                        .setDeviceEffects(new ZenDeviceEffects.Builder()
+                                .setShouldDimWallpaper(true)
+                                .build())
+                        .build(), false);
+
+        mBackend.updateMode(manualDnd);
+
+        verify(mNm).setManualZenRuleDeviceEffects(new ZenDeviceEffects.Builder()
+                .setShouldDimWallpaper(true)
+                .build());
+    }
+
+    @Test
+    public void updateMode_manualDnd_setsNotificationPolicy() {
+        ZenMode manualDnd = ZenMode.manualDndMode(
+                new AutomaticZenRule.Builder("DND", Uri.EMPTY)
+                        .setZenPolicy(new ZenPolicy.Builder().allowAllSounds().build())
+                        .build(), false);
+
+        mBackend.updateMode(manualDnd);
+
+        verify(mNm).setNotificationPolicy(eq(new ZenModeConfig().toNotificationPolicy(
+                new ZenPolicy.Builder().allowAllSounds().build())), eq(true));
+    }
+
+    @Test
+    public void updateMode_zenRule_updatesRule() {
+        ZenMode ruleMode = new ZenMode("rule", ZEN_RULE, false);
+
+        mBackend.updateMode(ruleMode);
+
+        verify(mNm).updateAutomaticZenRule(eq("rule"), eq(ZEN_RULE), eq(true));
+    }
+
+    @Test
+    public void activateMode_manualDnd_setsZenModeImportant() {
+        mBackend.activateMode(ZenMode.manualDndMode(MANUAL_DND_RULE, false), null);
+
+        verify(mNm).setZenMode(eq(Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS), eq(null),
+                any(), eq(true));
+    }
+
+    @Test
+    public void activateMode_manualDndWithDuration_setsZenModeImportantWithCondition() {
+        mBackend.activateMode(ZenMode.manualDndMode(MANUAL_DND_RULE, false),
+                Duration.ofMinutes(30));
+
+        verify(mNm).setZenMode(eq(Settings.Global.ZEN_MODE_IMPORTANT_INTERRUPTIONS),
+                eq(ZenModeConfig.toTimeCondition(mContext, 30, 0, true).id),
+                any(),
+                eq(true));
+    }
+
+    @Test
+    public void activateMode_zenRule_setsRuleStateActive() {
+        mBackend.activateMode(new ZenMode(ZEN_RULE_ID, ZEN_RULE, false), null);
+
+        verify(mNm).setAutomaticZenRuleState(eq(ZEN_RULE_ID),
+                eq(new Condition(ZEN_RULE.getConditionId(), "", Condition.STATE_TRUE,
+                        Condition.SOURCE_USER_ACTION)));
+    }
+
+    @Test
+    public void activateMode_zenRuleWithDuration_fails() {
+        assertThrows(IllegalArgumentException.class,
+                () -> mBackend.activateMode(new ZenMode(ZEN_RULE_ID, ZEN_RULE, false),
+                        Duration.ofMinutes(30)));
+    }
+
+    @Test
+    public void deactivateMode_manualDnd_setsZenModeOff() {
+        mBackend.deactivateMode(ZenMode.manualDndMode(MANUAL_DND_RULE, true));
+
+        verify(mNm).setZenMode(eq(ZEN_MODE_OFF), eq(null), any(), eq(true));
+    }
+
+    @Test
+    public void deactivateMode_zenRule_setsRuleStateInactive() {
+        mBackend.deactivateMode(new ZenMode(ZEN_RULE_ID, ZEN_RULE, false));
+
+        verify(mNm).setAutomaticZenRuleState(eq(ZEN_RULE_ID),
+                eq(new Condition(ZEN_RULE.getConditionId(), "", Condition.STATE_FALSE,
+                        Condition.SOURCE_USER_ACTION)));
+    }
+
+    @Test
+    public void removeMode_zenRule_deletesRule() {
+        mBackend.removeMode(new ZenMode(ZEN_RULE_ID, ZEN_RULE, false));
+
+        verify(mNm).removeAutomaticZenRule(ZEN_RULE_ID, true);
+    }
+
+    @Test
+    public void removeMode_manualDnd_fails() {
+        assertThrows(IllegalArgumentException.class,
+                () -> mBackend.removeMode(ZenMode.manualDndMode(MANUAL_DND_RULE, false)));
+    }
+}