Do not load unnecessary classes in Application

Signed-off-by: Joas Schilling <coding@schilljs.com>

1 files changed, 293 insertions, 0 deletions

diff --git a/lib/Signaling/Listener.php b/lib/Signaling/Listener.php
new file mode 100644
index 000000000..6443b21e4
--- /dev/null
+++ b/lib/Signaling/Listener.php
@@ -0,0 +1,293 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2019 Joas Schilling <coding@schilljs.com>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Spreed\Signaling;
+
+use OCA\Spreed\Chat\ChatManager;
+use OCA\Spreed\Config;
+use OCA\Spreed\GuestManager;
+use OCA\Spreed\Participant;
+use OCA\Spreed\Room;
+use OCP\IUser;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+use Symfony\Component\EventDispatcher\GenericEvent;
+
+class Listener {
+
+	public static function register(EventDispatcherInterface $dispatcher): void {
+		self::registerInternalSignaling($dispatcher);
+		self::registerExternalSignaling($dispatcher);
+	}
+
+	protected static function isUsingInternalSignaling(): bool {
+		/** @var Config $config */
+		$config = \OC::$server->query(Config::class);
+		return empty($config->getSignalingServers());
+	}
+
+	protected static function registerInternalSignaling(EventDispatcherInterface $dispatcher): void {
+		$listener = function(GenericEvent $event) {
+			if (!self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var Room $room */
+			$room = $event->getSubject();
+
+			/** @var Messages $messages */
+			$messages = \OC::$server->query(Messages::class);
+			$messages->addMessageForAllParticipants($room, 'refresh-participant-list');
+		};
+		$dispatcher->addListener(Room::class . '::postJoinRoom', $listener);
+		$dispatcher->addListener(Room::class . '::postJoinRoomGuest', $listener);
+		$dispatcher->addListener(Room::class . '::postSessionJoinCall', $listener);
+		$dispatcher->addListener(Room::class . '::postSessionLeaveCall', $listener);
+		$dispatcher->addListener(GuestManager::class . '::updateName', $listener);
+
+		$listener = function(GenericEvent $event) {
+			if (!self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var Room $room */
+			$room = $event->getSubject();
+
+			/** @var Messages $messages */
+			$messages = \OC::$server->query(Messages::class);
+			$messages->addMessageForAllParticipants($room, 'refresh-participant-list');
+
+			// When "addMessageForAllParticipants" is called the participant is
+			// no longer in the room, so the message needs to be explicitly
+			// added for the participant.
+			/** @var Participant $participant */
+			$participant = $event->getArgument('participant');
+			if ($participant->getSessionId() !== '0') {
+				$messages->addMessage($participant->getSessionId(), $participant->getSessionId(), 'refresh-participant-list');
+			}
+		};
+		$dispatcher->addListener(Room::class . '::postRemoveUser', $listener);
+		$dispatcher->addListener(Room::class . '::postRemoveBySession', $listener);
+		$dispatcher->addListener(Room::class . '::postUserDisconnectRoom', $listener);
+
+		$listener = function(GenericEvent $event) {
+			if (!self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var Messages $messages */
+			$messages = \OC::$server->query(Messages::class);
+			$participants = $event->getArgument('participants');
+			foreach ($participants['users'] as $participant) {
+				$messages->addMessage($participant['sessionId'], $participant['sessionId'], 'refresh-participant-list');
+			}
+			foreach ($participants['guests'] as $participant) {
+				$messages->addMessage($participant['sessionId'], $participant['sessionId'], 'refresh-participant-list');
+			}
+		};
+		$dispatcher->addListener(Room::class . '::postDeleteRoom', $listener);
+	}
+
+	protected static function registerExternalSignaling(EventDispatcherInterface $dispatcher): void {
+		$dispatcher->addListener(Room::class . '::postAddUsers', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$participants= $event->getArgument('users');
+			$notifier->roomInvited($room, $participants);
+		});
+		$dispatcher->addListener(Room::class . '::postSetName', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$notifier->roomModified($room);
+		});
+		$dispatcher->addListener(Room::class . '::postSetParticipantType', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			// The type of a participant has changed, notify all participants
+			// so they can update the room properties.
+			$notifier->roomModified($room);
+		});
+		$dispatcher->addListener(Room::class . '::postSetParticipantTypeBySession', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			// The type of a participant has changed, notify all participants
+			// so they can update the room properties.
+			$notifier->roomModified($room);
+		});
+		$dispatcher->addListener(Room::class . '::postDeleteRoom', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$participants = $event->getArgument('participants');
+			$notifier->roomDeleted($room, $participants);
+		});
+		$dispatcher->addListener(Room::class . '::postRemoveUser', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$user = $event->getArgument('user');
+			$notifier->roomsDisinvited($room, [$user->getUID()]);
+		});
+		$dispatcher->addListener(Room::class . '::postRemoveBySession', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$participant = $event->getArgument('participant');
+			$notifier->roomSessionsRemoved($room, [$participant->getSessionId()]);
+		});
+		$dispatcher->addListener(Room::class . '::postSessionJoinCall', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$sessionId = $event->getArgument('sessionId');
+			$flags = $event->getArgument('flags');
+			$notifier->roomInCallChanged($room, $flags, [$sessionId]);
+		});
+		$dispatcher->addListener(Room::class . '::postSessionLeaveCall', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$sessionId = $event->getArgument('sessionId');
+			$notifier->roomInCallChanged($room, Participant::FLAG_DISCONNECTED, [$sessionId]);
+		});
+		$dispatcher->addListener(Room::class . '::postRemoveBySession', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$participant = $event->getArgument('participant');
+			$notifier->participantsModified($room, [$participant->getSessionId()]);
+		});
+		$dispatcher->addListener(Room::class . '::postCleanGuests', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			// TODO: The list of removed session ids should be passed through the event
+			// so the signaling server can optimize forwarding the message.
+			$sessionIds = [];
+			$notifier->participantsModified($room, $sessionIds);
+		});
+		$dispatcher->addListener(GuestManager::class . '::updateName', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$sessionId = $event->getArgument('sessionId');
+			$notifier->participantsModified($room, [$sessionId]);
+		});
+		$dispatcher->addListener(ChatManager::class . '::sendMessage', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$message = [
+				'type' => 'chat',
+				'chat' => [
+					'refresh' => true,
+				],
+			];
+			$notifier->sendRoomMessage($room, $message);
+		});
+		$dispatcher->addListener(ChatManager::class . '::sendSystemMessage', function(GenericEvent $event) {
+			if (self::isUsingInternalSignaling()) {
+				return;
+			}
+
+			/** @var BackendNotifier $notifier */
+			$notifier = \OC::$server->query(BackendNotifier::class);
+
+			$room = $event->getSubject();
+			$message = [
+				'type' => 'chat',
+				'chat' => [
+					'refresh' => true,
+				],
+			];
+			$notifier->sendRoomMessage($room, $message);
+		});
+	}
+}