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<?php
/**
* Class ReenableCssTransientCachingAjaxAction.
*
* @package AmpProject\AmpWP
*/
namespace AmpProject\AmpWP\Admin;
use AMP_Options_Manager;
use AmpProject\AmpWP\Infrastructure\Registerable;
use AmpProject\AmpWP\Infrastructure\Service;
use AmpProject\AmpWP\Option;
/**
* Base class to define a new AJAX action.
*
* @package AmpProject\AmpWP
* @since 2.0
* @internal
*/
final class ReenableCssTransientCachingAjaxAction implements Service, Registerable {
/**
* Action to use for enqueueing the JS logic at the backend.
*
* @var string
*/
const BACKEND_ENQUEUE_ACTION = 'admin_enqueue_scripts';
/**
* AJAX action name to use.
*
* @var string
*/
const AJAX_ACTION = 'amp_reenable_css_transient_caching';
/**
* Selector to attach the click handler to.
*
* @var string
*/
const SELECTOR = 'a.reenable-css-transient-caching';
/**
* Register the AJAX action with the WordPress system.
*/
public function register() {
add_action( static::BACKEND_ENQUEUE_ACTION, [ $this, 'register_ajax_script' ] );
add_action( 'wp_ajax_' . self::AJAX_ACTION, [ $this, 'reenable_css_transient_caching' ] );
}
/**
* Register the AJAX logic.
*
* @param string $hook_suffix Hook suffix to identify from what admin page the call is coming from.
*/
public function register_ajax_script( $hook_suffix ) {
if ( 'site-health.php' !== $hook_suffix ) {
return;
}
$script = <<< 'JS_SCRIPT'
;( function () {
window.addEventListener( 'DOMContentLoaded', ( event ) => {
var selector = SELECTOR;
( document.querySelectorAll( selector ) || [] )
.forEach( ( element ) => {
element.addEventListener( 'click', function ( event ) {
event.preventDefault();
if ( element.classList.contains( 'disabled' ) ) {
return;
}
wp.ajax.post( ACTION, ARGUMENTS )
.done( function () {
element.classList.remove( 'ajax-failure' );
element.classList.add( 'ajax-success' )
element.classList.add( 'disabled' )
} )
.fail( function () {
element.classList.remove( 'ajax-success' );
element.classList.add( 'ajax-failure' )
element.classList.add( 'disabled' )
} );
} );
} );
} );
} )();
JS_SCRIPT;
$replacements = array_map(
'wp_json_encode',
[
'SELECTOR' => self::SELECTOR,
'ACTION' => self::AJAX_ACTION,
'ARGUMENTS' => [ 'nonce' => wp_create_nonce( self::AJAX_ACTION ) ],
]
);
$script = str_replace(
array_keys( $replacements ),
array_values( $replacements ),
$script
);
wp_enqueue_script( 'wp-util' );
wp_add_inline_script( 'wp-util', $script );
}
/**
* Re-enable the CSS Transient caching.
*
* This is triggered via an AJAX call from the Site Health panel.
*/
public function reenable_css_transient_caching() {
check_ajax_referer( self::AJAX_ACTION, 'nonce' );
if ( ! current_user_can( 'manage_options' ) ) {
wp_send_json_error( 'Unauthorized.', 401 );
}
$result = AMP_Options_Manager::update_option( Option::DISABLE_CSS_TRANSIENT_CACHING, false );
if ( false === $result ) {
wp_send_json_error( 'CSS transient caching could not be re-enabled.', 500 );
}
wp_send_json_success( 'CSS transient caching was re-enabled.', 200 );
}
}
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