MAS require Element X

vector-config/src/main/java/im/vector/app/config/Config.kt

@@ -97,4 +97,16 @@ object Config {
     val ER_DEBUG_ANALYTICS_CONFIG = DEBUG_ANALYTICS_CONFIG.copy(sentryEnvironment = "element-r")
 
     val SHOW_UNVERIFIED_SESSIONS_ALERT_AFTER_MILLIS = 7.days.inWholeMilliseconds // 1 Week
+
+    /**
+     * Sunsetting the application.
+     * Fork maintainers can use this to inform users about their new application if any. Note that you probably also want
+     * to replace the resource `replacement_app_icon` too.
+     */
+    val sunsetConfig: SunsetConfig = SunsetConfig.Enabled(
+            // TODO: update this URL.
+            learnMoreLink = "https://element.io/",
+            replacementApplicationName = "Element X",
+            replacementApplicationId = "io.element.android.x",
+    )
 }

vector-config/src/main/java/im/vector/app/config/SunsetConfig.kt

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2025 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 im.vector.app.config
+
+sealed interface SunsetConfig {
+    /**
+     * Sunsetting the application is disabled.
+     */
+    data object Disabled : SunsetConfig
+
+    /**
+     * Sunsetting the application is enabled and can be configured by implementing this class.
+     */
+    data class Enabled(
+            /**
+             * The URL target to learn more.
+             */
+            val learnMoreLink: String,
+
+            /**
+             * The replacement application ID.
+             * Example: for Element application, the replacement application ID is the id of Element X: "Element X".
+             */
+            val replacementApplicationName: String,
+
+            /**
+             * The replacement application ID.
+             * Example: for Element App, the replacement application ID is the id of Element X: "io.element.android.x".
+             */
+            val replacementApplicationId: String,
+    ) : SunsetConfig
+}