[Notif] Add PromotedNotificationUi flag refactor util class.

Bug: 364653005
Flag: android.app.ui_rich_ongoing
Test: EXEMPT adding unused file
Change-Id: I03fb6857a380474475e83653772f5d336c1a44f2

1 files changed, 61 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/promoted/PromotedNotificationUi.kt b/packages/SystemUI/src/com/android/systemui/statusbar/notification/promoted/PromotedNotificationUi.kt
new file mode 100644
index 000000000000..632421980772
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/promoted/PromotedNotificationUi.kt
@@ -0,0 +1,61 @@
+/*
+ * 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.systemui.statusbar.notification.promoted
+
+import android.app.Flags
+import com.android.systemui.flags.FlagToken
+import com.android.systemui.flags.RefactorFlagUtils
+
+/** Helper for reading or using the promoted ongoing notifications UI flag state. */
+@Suppress("NOTHING_TO_INLINE")
+object PromotedNotificationUi {
+    /** The aconfig flag name */
+    const val FLAG_NAME = Flags.FLAG_UI_RICH_ONGOING
+
+    /** A token used for dependency declaration */
+    val token: FlagToken
+        get() = FlagToken(FLAG_NAME, isEnabled)
+
+    /** Is the refactor enabled */
+    @JvmStatic
+    inline val isEnabled
+        get() = Flags.uiRichOngoing()
+
+    /**
+     * Called to ensure code is only run when the flag is enabled. This protects users from the
+     * unintended behaviors caused by accidentally running new logic, while also crashing on an eng
+     * build to ensure that the refactor author catches issues in testing.
+     */
+    @JvmStatic
+    inline fun isUnexpectedlyInLegacyMode() =
+        RefactorFlagUtils.isUnexpectedlyInLegacyMode(isEnabled, FLAG_NAME)
+
+    /**
+     * Called to ensure code is only run when the flag is disabled. This will throw an exception if
+     * the flag is not enabled to ensure that the refactor author catches issues in testing.
+     * Caution!! Using this check incorrectly will cause crashes in nextfood builds!
+     */
+    @JvmStatic
+    inline fun assertInNewMode() = RefactorFlagUtils.assertInNewMode(isEnabled, FLAG_NAME)
+
+    /**
+     * Called to ensure code is only run when the flag is disabled. This will throw an exception if
+     * the flag is enabled to ensure that the refactor author catches issues in testing.
+     */
+    @JvmStatic
+    inline fun assertInLegacyMode() = RefactorFlagUtils.assertInLegacyMode(isEnabled, FLAG_NAME)
+}