メッセージ (トーク/チャット) 削除の連合 (#6789)

src/services/messages/delete.ts

@@ -0,0 +1,31 @@
+import config from '../../config';
+import { ensure } from '../../prelude/ensure';
+import { MessagingMessages, Users } from '../../models';
+import { MessagingMessage } from '../../models/entities/messaging-message';
+import { publishGroupMessagingStream, publishMessagingStream } from '../stream';
+import { renderActivity } from '../../remote/activitypub/renderer';
+import renderDelete from '../../remote/activitypub/renderer/delete';
+import renderTombstone from '../../remote/activitypub/renderer/tombstone';
+import { deliver } from '../../queue';
+
+export async function deleteMessage(message: MessagingMessage) {
+	await MessagingMessages.delete(message.id);
+	postDeleteMessage(message);
+}
+
+async function postDeleteMessage(message: MessagingMessage) {
+	if (message.recipientId) {
+		const user = await Users.findOne(message.userId).then(ensure);
+		const recipient = await Users.findOne(message.recipientId).then(ensure);
+
+		if (Users.isLocalUser(user)) publishMessagingStream(message.userId, message.recipientId, 'deleted', message.id);
+		if (Users.isLocalUser(recipient)) publishMessagingStream(message.recipientId, message.userId, 'deleted', message.id);
+
+		if (Users.isLocalUser(user) && Users.isRemoteUser(recipient)) {
+			const activity = renderActivity(renderDelete(renderTombstone(`${config.url}/notes/${message.id}`), user));
+			deliver(user, activity, recipient.inbox);
+		}
+	} else if (message.groupId) {
+		publishGroupMessagingStream(message.groupId, 'deleted', message.id);
+	}
+}