class-site-health.php

<?php
defined('ABSPATH') or die("you do not have access to this page!");

if (!class_exists("rsssl_site_health")) {
	class rsssl_site_health {

		private static $_this;

		function __construct() {

			if ( isset( self::$_this ) ) {
				wp_die( sprintf( __( '%s is a singleton class and you cannot create a second instance.', 'really-simple-ssl' ), get_class( $this ) ) );

			}

			add_filter( 'site_status_tests', array($this, 'rsssl_hsts_check' ) );

			self::$_this = $this;
		}

		static function this() {
			return self::$_this;
		}

		public function rsssl_hsts_check( $tests ) {
			$tests['direct']['really-simple-ssl'] = array(
				'label' => __( 'Really Simple SSL HSTS test' ),
				'test'  => array($this, "rsssl_hsts_test"),
			);

			return $tests;
		}

		public function rsssl_hsts_test() {
			$result = array(
				'label'       => __( '301 SSL redirect enabled', 'really-simple-ssl' ),
				'status'      => 'good',
				'badge'       => array(
					'label' => __( 'SSL' ),
					'color' => 'blue',
				),
				'description' => sprintf(
					'<p>%s</p>',
					__( 'You have set a 301 redirect to SSL. This is important for SEO purposes', 'really-simple-ssl' )
				),
				'actions'     => '',
				'test'        => 'really-simple-ssl',
			);

			if (RSSSL()->really_simple_ssl->has_301_redirect() && RSSSL()->really_simple_ssl->wp_redirect && RSSSL()->rsssl_server->uses_htaccess() && !RSSSL()->really_simple_ssl->htaccess_redirect) {
				$result['status']      = 'recommended';
				$result['label']       = __( '301 .htaccess redirect is not enabled.' , 'really-simple-ssl' );
				$result['description'] = sprintf(
					'<p>%s</p>',
					__( 'The 301 .htaccess redirect is often the fastest and most reliable redirect option.' )
				);
				$result['actions']     .= sprintf(
					'<p><a href="%s">%s</a></p>',
					esc_url( admin_url("options-general.php?page=rlrsssl_really_simple_ssl&tab=settings") ),
					__( 'Enable 301 .htaccess redirect', 'really-simple-ssl' )
				);
			}

			return $result;

		}
	}
}