UPSTREAM BASELINE: nextcloud/spreed v22.0.12 (без изменений)

Источник: https://github.com/nextcloud/spreed/archive/refs/tags/v22.0.12.tar.gz
С этого коммита ветка официального Nextcloud Talk отрезана (решение владельца 2026-07-06).
Все дальнейшие изменения — только наши; версии релизов: 22.0.12-f7.N.

lib/Chat/Parser/Command.php

@@ -0,0 +1,63 @@
+<?php
+
+declare(strict_types=1);
+/**
+ * SPDX-FileCopyrightText: 2018 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\Chat\Parser;
+
+use OCA\Talk\Chat\ChatManager;
+use OCA\Talk\Events\MessageParseEvent;
+use OCA\Talk\Model\Attendee;
+use OCP\EventDispatcher\Event;
+use OCP\EventDispatcher\IEventListener;
+
+/**
+ * @template-implements IEventListener<Event>
+ */
+class Command implements IEventListener {
+	public const RESPONSE_NONE = 0;
+	public const RESPONSE_USER = 1;
+	public const RESPONSE_ALL = 2;
+
+	#[\Override]
+	public function handle(Event $event): void {
+		if (!$event instanceof MessageParseEvent) {
+			return;
+		}
+
+		$message = $event->getMessage();
+
+		if ($message->getMessageType() !== ChatManager::VERB_COMMAND) {
+			return;
+		}
+
+		$message->setVisibility(false);
+
+		$comment = $message->getComment();
+		$data = json_decode($comment->getMessage(), true);
+		if (!\is_array($data)) {
+			return;
+		}
+
+		$event->stopPropagation();
+
+		if ($data['visibility'] === self::RESPONSE_NONE) {
+			$message->setVisibility(false);
+			return;
+		}
+
+		$participant = $message->getParticipant();
+		if ($data['visibility'] !== self::RESPONSE_ALL
+			&& $participant !== null
+			&& ($participant->getAttendee()->getActorType() !== Attendee::ACTOR_USERS
+				|| $data['user'] !== $participant->getAttendee()->getActorId())) {
+			$message->setVisibility(false);
+			return;
+		}
+
+		$message->setMessage($data['output'], []);
+	}
+}