Implement Talk has read federation (#5636)

* Talk read

* fix

* 複数のRead ActivityはCollectionとして送るように

* あ

src/remote/activitypub/kernel/read.ts

@@ -0,0 +1,27 @@
+import { IRemoteUser } from '../../../models/entities/user';
+import { IRead, getApId } from '../type';
+import { isSelfHost, extractDbHost } from '../../../misc/convert-host';
+import { MessagingMessages } from '../../../models';
+import { readUserMessagingMessage } from '../../../server/api/common/read-messaging-message';
+
+export const performReadActivity = async (actor: IRemoteUser, activity: IRead): Promise<string> => {
+	const id = await getApId(activity.object);
+
+	if (!isSelfHost(extractDbHost(id))) {
+		return `skip: Read to foreign host (${id})`;
+	}
+
+	const messageId = id.split('/').pop();
+
+	const message = await MessagingMessages.findOne(messageId);
+	if (message == null) {
+		return `skip: message not found`;
+	}
+
+	if (actor.id != message.recipientId) {
+		return `skip: actor is not a message recipient`;
+	}
+
+	await readUserMessagingMessage(message.recipientId!, message.userId, [message.id]);
+	return `ok: mark as read (${message.userId} => ${message.recipientId} ${message.id})`;
+};