/**
* Creates or updates the channel and returns it.
*
* @param WiseChatChannel $channel
*
* @return WiseChatChannel
* @throws Exception On validation error
*/
public function save($channel)
{
global $wpdb;
// low-level validation:
if ($channel->getName() === null) {
throw new Exception('Name of the channel cannot equal null');
}
// prepare channel data:
$table = WiseChatInstaller::getChannelsTable();
$columns = array('name' => $channel->getName(), 'password' => $channel->getPassword());
// update or insert:
if ($channel->getId() !== null) {
$wpdb->update($table, $columns, array('id' => $channel->getId()), '%s', '%d');
} else {
$wpdb->insert($table, $columns);
$channel->setId($wpdb->insert_id);
}
return $channel;
}
/**
* Returns rendered channel statistics.
*
* @param WiseChatChannel $channel
*
* @return string HTML source
*/
public function getRenderedChannelStats($channel)
{
if ($channel === null) {
return 'ERROR: channel does not exist';
}
$variables = array('channel' => $channel->getName(), 'messages' => $this->messagesService->getNumberByChannelName($channel->getName()), 'users' => $this->channelUsersDAO->getAmountOfUsersInChannel($channel->getId()));
return $this->getTemplatedString($variables, $this->options->getOption('template', 'ERROR: TEMPLATE NOT SPECIFIED'));
}
/**
* Maintenance actions performed periodically. The method authenticates user if there was
* no authentication performed.
*
* @param WiseChatChannel $channel
*
* @return null
*/
public function periodicMaintenance($channel)
{
// check and authenticate user:
if (!$this->authentication->isAuthenticated()) {
$user = $this->authentication->authenticateAnonymously();
$this->actions->publishAction('refreshPlainUserName', array('name' => $user->getName()), $user);
}
// signal presence in the channel:
if ($this->userEvents->shouldTriggerEvent('ping', $channel->getName())) {
$this->markPresenceInChannel($channel);
}
$this->refreshChannelUsersData();
}
/**
* 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);
}
}
}
