Introduce MessageAudioEvent

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/room/model/message/MessageAudioEvent.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022 The Matrix.org Foundation C.I.C.
+ *
+ * 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 org.matrix.android.sdk.api.session.room.model.message
+
+import org.matrix.android.sdk.api.extensions.tryOrNull
+import org.matrix.android.sdk.api.session.events.model.Event
+import org.matrix.android.sdk.api.session.events.model.EventType
+import org.matrix.android.sdk.api.session.events.model.toModel
+
+/**
+ * [Event] wrapper for [EventType.MESSAGE] event type.
+ * Provides additional fields and functions related to this event type.
+ */
+@JvmInline
+value class MessageAudioEvent(val root: Event) {
+
+    /**
+     * The mapped [MessageAudioContent] model of the event content.
+     */
+    val content: MessageAudioContent
+        get() = root.getClearContent().toModel<MessageContent>() as MessageAudioContent
+
+    init {
+        require(tryOrNull { content } != null)
+    }
+}
+
+/**
+ * Map a [EventType.MESSAGE] event to a [MessageAudioEvent].
+ */
+fun Event.asMessageAudioEvent() = if (getClearType() == EventType.MESSAGE) {
+    tryOrNull { MessageAudioEvent(this) }
+} else null