/**
* Gets the singleton instance of this class to ensure that it only ever gets constructed correctly once.
*
* @return bool|Catalyst_API
*/
public static function instance()
{
if (!self::$_instance) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Get the site's subscription level, either from the cache or from the remote API.
*
* 0 - unregistered
* 10 - free
* 20 - premium
*
* @return int
*/
public function get_subscription_level()
{
$level = get_transient('seoslides_level');
if (false === $level) {
$level = 0;
$api_key = get_option('seoslides_api_key', '');
if (!empty($api_key)) {
$catalyst = Catalyst_API::instance();
$catalyst->set_api_key($api_key);
$subscriptions = $catalyst->get_subscription_plans();
if (in_array('c8c8ee061df0601b7eb9ef90946100eded29e3d1e68b4dbe82e05aabb6042f8a', $subscriptions)) {
$level = 20;
} elseif (in_array('e41a557640b1b8c2e73b5abe0460d10c56fd6052d30da96511ba80acf9fe0ccf', $subscriptions)) {
$level = 10;
}
}
set_transient('seoslides_level', $level, 60 * 60);
}
return (int) $level;
}
