snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

apps/meteor/server/meteor-methods/messages/getSingleMessage.ts

@@ -0,0 +1,42 @@
+import type { IMessage } from '@rocket.chat/core-typings';
+import type { ServerMethods } from '@rocket.chat/ddp-client';
+import { Messages } from '@rocket.chat/models';
+import { check } from 'meteor/check';
+import { Meteor } from 'meteor/meteor';
+
+import { canAccessRoomIdAsync } from '../../lib/authorization/canAccessRoom';
+
+declare module '@rocket.chat/ddp-client' {
+	// eslint-disable-next-line @typescript-eslint/naming-convention
+	interface ServerMethods {
+		getSingleMessage(mid: IMessage['_id']): Promise<IMessage | null>;
+	}
+}
+
+export const getSingleMessage = async (userId: string, mid: IMessage['_id']): Promise<IMessage | null> => {
+	const msg = await Messages.findOneById(mid);
+
+	if (!msg?.rid) {
+		return null;
+	}
+
+	if (!(await canAccessRoomIdAsync(msg.rid, userId))) {
+		throw new Meteor.Error('error-not-allowed', 'Not allowed', { method: 'getSingleMessage' });
+	}
+
+	return msg;
+};
+
+Meteor.methods<ServerMethods>({
+	async getSingleMessage(mid) {
+		check(mid, String);
+
+		const uid = Meteor.userId();
+
+		if (!uid) {
+			throw new Meteor.Error('error-invalid-user', 'Invalid user', { method: 'getSingleMessage' });
+		}
+
+		return getSingleMessage(uid, mid);
+	},
+});