<?php
/**
* The Third Party integration with AMP plugin.
*
* @since 2.9.8.6
* @package LiteSpeed
* @subpackage LiteSpeed_Cache/thirdparty
*/
namespace LiteSpeed\Thirdparty;
defined( 'WPINC' ) || exit;
/**
* Integration helpers for AMP-compatible behaviour.
*
* Disables optimization features on AMP endpoints provided by popular AMP
* plugins to ensure valid AMP output (no injected JS/lazy/CSS async, etc).
*/
class AMP {
/**
* Maybe mark current request as AMP and disable conflicting optimizations.
*
* @since 4.2
*
* @param string $amp_function Callback/function name that returns whether current request is AMP.
* @return void
*/
private static function _maybe_amp( $amp_function ) {
if ( is_admin() ) {
return;
}
// phpcs:ignore WordPress.Security.NonceVerification.Recommended
if ( ! isset( $_GET['amp'] ) && ( ! function_exists( $amp_function ) || ! $amp_function() ) ) {
return;
}
do_action( 'litespeed_debug', '[3rd] ❌ AMP disabled page optm/lazy' );
defined( 'LITESPEED_NO_PAGEOPTM' ) || define( 'LITESPEED_NO_PAGEOPTM', true );
defined( 'LITESPEED_NO_LAZY' ) || define( 'LITESPEED_NO_LAZY', true );
defined( 'LITESPEED_NO_OPTM' ) || define( 'LITESPEED_NO_OPTM', true );
// defined( 'LITESPEED_GUEST' ) || define( 'LITESPEED_GUEST', false );
}
/**
* Ampforwp_is_amp_endpoint() from Accelerated Mobile Pages.
*
* @since 4.2
* @return void
*/
public static function maybe_acc_mob_pages() {
self::_maybe_amp( 'ampforwp_is_amp_endpoint' );
}
/**
* Google AMP fix.
*
* @since 4.2.0.1
* @return void
*/
public static function maybe_google_amp() {
self::_maybe_amp( 'amp_is_request' );
}
/**
* Preload hooks to detect AMP requests and turn off conflicting features.
*
* CSS async will affect AMP result and Lazyload injects JS libraries which
* AMP does not allow. Ensure those are disabled early on AMP endpoints.
*
* @since 2.9.8.6
* @access public
* @return void
*/
public static function preload() {
add_action( 'wp', __CLASS__ . '::maybe_acc_mob_pages' );
add_action( 'wp', __CLASS__ . '::maybe_google_amp' );
// amp_is_request() from AMP.
// self::maybe_amp( 'amp_is_request' );
// add_filter( 'litespeed_can_optm', '__return_false' );
// do_action( 'litespeed_conf_force', API::O_OPTM_CSS_ASYNC, false );
// do_action( 'litespeed_conf_force', API::O_MEDIA_LAZY, false );
// do_action( 'litespeed_conf_force', API::O_MEDIA_IFRAME_LAZY, false );
}
}