Ensure that setting change is taken at least 300ms to avoid dialog flickering (#1647)

features/roomdetails/impl/src/main/kotlin/io/element/android/features/roomdetails/impl/notificationsettings/RoomNotificationSettingsPresenter.kt

@@ -32,6 +32,7 @@ import io.element.android.libraries.architecture.AsyncAction
 import io.element.android.libraries.architecture.AsyncData
 import io.element.android.libraries.architecture.Presenter
 import io.element.android.libraries.architecture.runCatchingUpdatingState
+import io.element.android.libraries.core.coroutine.suspendWithMinimumDuration
 import io.element.android.libraries.matrix.api.notificationsettings.NotificationSettingsService
 import io.element.android.libraries.matrix.api.room.MatrixRoom
 import io.element.android.libraries.matrix.api.room.RoomNotificationMode
@@ -171,7 +172,7 @@ class RoomNotificationSettingsPresenter @AssistedInject constructor(
         pendingDefaultState: MutableState<Boolean?>,
         action: MutableState<AsyncAction<Unit>>
     ) = launch {
-        suspend {
+        suspendWithMinimumDuration {
             pendingModeState.value = mode
             pendingDefaultState.value = false
             val result = notificationSettingsService.setRoomNotificationMode(room.roomId, mode)
@@ -187,7 +188,7 @@ class RoomNotificationSettingsPresenter @AssistedInject constructor(
         action: MutableState<AsyncAction<Unit>>,
         pendingDefaultState: MutableState<Boolean?>
     ) = launch {
-        suspend {
+        suspendWithMinimumDuration {
             pendingDefaultState.value = true
             val result = notificationSettingsService.restoreDefaultRoomNotificationMode(room.roomId)
             if (result.isFailure) {

libraries/core/src/main/kotlin/io/element/android/libraries/core/coroutine/Suspend.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2024 New Vector Ltd
+ *
+ * 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 io.element.android.libraries.core.coroutine
+
+import kotlinx.coroutines.delay
+import kotlin.system.measureTimeMillis
+
+fun suspendWithMinimumDuration(
+    minimumDurationMillis: Long = 500,
+    block: suspend () -> Unit
+) = suspend {
+    val duration = measureTimeMillis {
+        block()
+    }
+    delay(minimumDurationMillis - duration)
+}