public function createMessageCollection($userId, $appId, $messageCollection)
{
$this->checkDb();
$userId = intval($userId);
$appId = intval($appId);
$title = mysqli_real_escape_string($this->db, trim($messageCollection['title']));
if (strlen($title) == 0) {
throw new SocialSpiException("Can't create a message collection with an empty title");
}
// Stores urls as a json string.
$urls = '';
if (isset($messageCollection['urls'])) {
$urls = mysqli_real_escape_string($this->db, json_encode($messageCollection['urls']));
}
$created = time();
mysqli_query($this->db, "insert into message_collections (person_id, app_id, title, updated, urls, created) values ({$userId}, {$appId}, '{$title}', {$created}, '{$urls}', {$created})");
if (!($messageCollectionId = mysqli_insert_id($this->db))) {
throw new SocialSpiException("Insertion failed.", ResponseError::$INTERNAL_ERROR);
} else {
// The message collection created is returned so the client code can get the id of the created message collection.
// Otherwise it's difficult for the client code to reference the created message collection.
$collection = new MessageCollection($messageCollectionId, $messageCollection['title']);
$collection->setUpdated($created);
$collection->setTotal(0);
$collection->setUnread(0);
$collection->setUrls($messageCollection['urls']);
return $collection;
}
}