No Backbone in data layer; server/client interfaces are now similar

ts/util/cleanup.ts

@@ -0,0 +1,36 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import type { MessageAttributesType } from '../model-types.d';
+import { deletePackReference } from '../types/Stickers';
+
+export async function cleanupMessage(
+  message: MessageAttributesType
+): Promise<void> {
+  const { id, conversationId } = message;
+
+  window.reduxActions?.conversations.messageDeleted(id, conversationId);
+
+  const parentConversation = window.ConversationController.get(conversationId);
+  parentConversation?.debouncedUpdateLastMessage?.();
+
+  window.MessageController.unregister(id);
+
+  await deleteMessageData(message);
+}
+
+export async function deleteMessageData(
+  message: MessageAttributesType
+): Promise<void> {
+  await window.Signal.Migrations.deleteExternalMessageFiles(message);
+
+  const { sticker } = message;
+  if (!sticker) {
+    return;
+  }
+
+  const { packId } = sticker;
+  if (packId) {
+    await deletePackReference(message.id, packId);
+  }
+}