/**
* Deletes old messages according to the plugin's settings.
* Images connected to the messages (WordPress Media Library attachments) are also deleted.
*
* @param WiseChatChannel $channel
*
* @throws Exception
*/
private function deleteOldMessages($channel)
{
$minutesThreshold = $this->options->getIntegerOption('auto_clean_after', 0);
if ($minutesThreshold > 0) {
$criteria = new WiseChatMessagesCriteria();
$criteria->setChannelName($channel->getName());
$criteria->setIncludeAdminMessages(true);
$criteria->setMaximumTime(time() - $minutesThreshold * 60);
$messages = $this->messagesDAO->getAllByCriteria($criteria);
$messagesIds = array();
foreach ($messages as $message) {
$messagesIds[] = $message->getId();
}
if (count($messagesIds) > 0) {
$this->attachmentsService->deleteAttachmentsByMessageIds($messagesIds);
$this->actions->publishAction('deleteMessages', array('ids' => $messagesIds));
$this->messagesDAO->deleteAllByCriteria($criteria);
}
}
}
