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<?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\Talk\Chat\Command;
use OCA\Talk\Chat\ChatManager;
use OCA\Talk\Events\ChatParticipantEvent;
use OCA\Talk\Model\Command;
use OCA\Talk\Service\CommandService;
use OCP\AppFramework\Db\DoesNotExistException;
use OCP\EventDispatcher\IEventDispatcher;
class Listener {
/** @var CommandService */
protected $commandService;
/** @var Executor */
protected $executor;
public function __construct(CommandService $commandService,
Executor $executor) {
$this->commandService = $commandService;
$this->executor = $executor;
}
public static function register(IEventDispatcher $dispatcher): void {
$dispatcher->addListener(ChatManager::EVENT_BEFORE_MESSAGE_SEND, static function(ChatParticipantEvent $event) {
$message = $event->getComment();
$participant = $event->getParticipant();
/** @var self $listener */
$listener = \OC::$server->query(self::class);
if (strpos($message->getMessage(), '//') === 0) {
return;
}
try {
/** @var Command $command */
/** @var string $arguments */
[$command, $arguments] = $listener->getCommand($message->getMessage());
$command = $listener->commandService->resolveAlias($command);
} catch (DoesNotExistException $e) {
return;
}
if ($command->getEnabled() === Command::ENABLED_OFF) {
return;
}
if ($command->getEnabled() === Command::ENABLED_MODERATOR && !$participant->hasModeratorPermissions()) {
return;
}
if ($command->getEnabled() === Command::ENABLED_USERS && $participant->isGuest()) {
return;
}
$listener->executor->exec($event->getRoom(), $message, $command, $arguments);
});
}
/**
* @param string $message
* @return array [Command, string]
* @throws DoesNotExistException
*/
public function getCommand(string $message): array {
[$app, $cmd, $arguments] = $this->matchesCommand($message);
if ($app === '') {
throw new DoesNotExistException('No command found');
}
try {
return [$this->commandService->find($app, $cmd), trim($arguments)];
} catch (DoesNotExistException $e) {
}
try {
return [$this->commandService->find('', $app), trim($cmd . ' ' . $arguments)];
} catch (DoesNotExistException $e) {
}
return [$this->commandService->find('', 'help'), trim($message)];
}
protected function matchesCommand(string $message): array {
if (strpos($message, '/') !== 0) {
return ['', '', ''];
}
$cmd = explode(' ', substr($message, 1), 3);
return [
$cmd[0],
$cmd[1] ?? '',
$cmd[2] ?? '',
];
}
}
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