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<?php
/**
* Class MC4WP_Usage_Tracking
*
* @access private
* @since 2.3
* @ignore
*/
class MC4WP_Usage_Tracking {
/**
* @var string
*/
protected $tracking_url = 'https://www.mc4wp.com/api/usage-tracking';
/**
* @var MC4WP_Usage_Tracking The One True Instance
*/
protected static $instance;
/**
* @return MC4WP_Usage_Tracking
*/
public static function instance() {
if ( ! self::$instance instanceof MC4WP_Usage_Tracking ) {
self::$instance = new MC4WP_Usage_Tracking();
}
return self::$instance;
}
/**
* Add hooks
*/
public function add_hooks() {
add_action( 'mc4wp_usage_tracking', array( $this, 'track' ) );
add_filter( 'cron_schedules', array( $this, 'cron_schedules' ) );
}
/**
* Registers a new schedule with WP Cron
*
* @param array $schedules
*
* @return array
*/
public function cron_schedules( $schedules ) {
$schedules['monthly'] = array(
'interval' => 30 * DAY_IN_SECONDS,
'display' => esc_html__( 'Once a month', 'mailchimp-for-wp' ),
);
return $schedules;
}
/**
* Enable usage tracking
*
* @return bool
*/
public function enable() {
// only schedule if not yet scheduled
if ( ! wp_next_scheduled( 'mc4wp_usage_tracking' ) ) {
return wp_schedule_event( time(), 'monthly', 'mc4wp_usage_tracking' );
}
return true;
}
/**
* Disable usage tracking
*/
public function disable() {
wp_clear_scheduled_hook( 'mc4wp_usage_tracking' );
}
/**
* Toggle tracking (clears & sets the scheduled tracking event)
*
* @param bool $enable
*/
public function toggle( $enable ) {
$enable ? $this->enable() : $this->disable();
}
/**
* Sends the tracking request. Non-blocking.
*
* @return bool
*/
public function track() {
$data = $this->get_tracking_data();
// send non-blocking request and be done with it
wp_remote_post(
$this->tracking_url,
array(
'body' => json_encode( $data ),
'headers' => array(
'Content-Type' => 'application/json',
'Accept' => 'application/json',
),
'blocking' => false,
)
);
return true;
}
/**
* @return array
*/
protected function get_tracking_data() {
$data = array(
// use md5 hash of home_url, we don't need/want to know the actual site url
'site' => md5( home_url() ),
'number_of_mailchimp_lists' => $this->get_mailchimp_lists_count(),
'mc4wp_version' => $this->get_mc4wp_version(),
'mc4wp_premium_version' => $this->get_mc4wp_premium_version(),
'plugins' => (array) get_option( 'active_plugins', array() ),
'php_version' => $this->get_php_version(),
'curl_version' => $this->get_curl_version(),
'wp_version' => $GLOBALS['wp_version'],
'wp_language' => get_locale(),
'server_software' => $this->get_server_software(),
'using_https' => $this->is_site_using_https(),
);
return $data;
}
public function get_php_version() {
if ( ! defined( 'PHP_MAJOR_VERSION' ) ) { // defined since PHP 5.2.7
return null;
}
return PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION;
}
/**
* @return string
*/
public function get_mc4wp_premium_version() {
return defined( 'MC4WP_PREMIUM_VERSION' ) ? MC4WP_PREMIUM_VERSION : null;
}
/**
* Returns the Mailchimp for WordPress version
*
* @return string
*/
protected function get_mc4wp_version() {
return MC4WP_VERSION;
}
/**
* @return int
*/
protected function get_mailchimp_lists_count() {
$mailchimp = new MC4WP_MailChimp();
return count( $mailchimp->get_lists() );
}
/**
* @return string
*/
protected function get_curl_version() {
if ( ! function_exists( 'curl_version' ) ) {
return null;
}
$curl_version_info = curl_version();
return $curl_version_info['version'];
}
/**
* @return bool
*/
protected function is_site_using_https() {
$site_url = site_url();
return stripos( $site_url, 'https' ) === 0;
}
/**
* @return string
*/
protected function get_server_software() {
if ( ! isset( $_SERVER['SERVER_SOFTWARE'] ) ) {
return null;
}
return $_SERVER['SERVER_SOFTWARE'];
}
}
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