Class for reading avalanche suppression flag

Bug: 321089634
Test: SystemUITests
Flag: ACONFIG notification_avalanche_suppression DEVELOPMENT
Change-Id: I601fdb4ffc466b8c6161c6124a751986cd9971b6

1 files changed, 53 insertions, 0 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/shared/NotificationAvalancheSuppression.kt b/packages/SystemUI/src/com/android/systemui/statusbar/notification/shared/NotificationAvalancheSuppression.kt
new file mode 100644
index 000000000000..a21dd9bb9579
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/shared/NotificationAvalancheSuppression.kt
@@ -0,0 +1,53 @@
+/*
+ * 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.shared
+
+import com.android.systemui.Flags
+import com.android.systemui.flags.FlagToken
+import com.android.systemui.flags.RefactorFlagUtils
+
+/** Helper for reading or using the notification avalanche suppression flag state. */
+@Suppress("NOTHING_TO_INLINE")
+object NotificationAvalancheSuppression {
+    /** The aconfig flag name */
+    const val FLAG_NAME = Flags.FLAG_NOTIFICATION_AVALANCHE_SUPPRESSION
+
+    /** A token used for dependency declaration */
+    val token: FlagToken
+        get() = FlagToken(FLAG_NAME, isEnabled)
+
+    /** Is the refactor enabled */
+    @JvmStatic
+    inline val isEnabled
+        get() = Flags.notificationAvalancheSuppression()
+
+    /**
+     * 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 enabled to ensure that the refactor author catches issues in testing.
+     */
+    @JvmStatic
+    inline fun assertInLegacyMode() = RefactorFlagUtils.assertInLegacyMode(isEnabled, FLAG_NAME)
+}
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