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<?php
namespace WP_Rocket\Engine\CriticalPath\Admin;
use WP_Rocket\Admin\Options_Data;
use WP_Rocket\Engine\CriticalPath\ProcessorService;
use WP_Rocket\Engine\CriticalPath\TransientTrait;
class Admin {
use TransientTrait;
/**
* Instance of options handler.
*
* @var Options_Data
*/
private $options;
/**
* Instance of ProcessorService.
*
* @var ProcessorService
*/
private $processor;
/**
* Creates an instance of the class.
*
* @param Options_Data $options Options instance.
* @param ProcessorService $processor ProcessorService instance.
*/
public function __construct( Options_Data $options, ProcessorService $processor ) {
$this->options = $options;
$this->processor = $processor;
}
/**
* Check the CPCSS heartbeat.
*
* @since 3.6
*/
public function cpcss_heartbeat() {
check_ajax_referer( 'cpcss_heartbeat_nonce', '_nonce', true );
if (
! $this->is_async_css_enabled()
||
! current_user_can( 'rocket_manage_options' )
||
! current_user_can( 'rocket_regenerate_critical_css' )
) {
wp_send_json_error();
return;
}
$cpcss_pending = get_transient( 'rocket_cpcss_generation_pending' );
if ( ! empty( $cpcss_pending ) ) {
$cpcss_pending = $this->process_cpcss_pending_queue( (array) $cpcss_pending );
}
if ( false !== $cpcss_pending && empty( $cpcss_pending ) ) {
delete_transient( 'rocket_cpcss_generation_pending' );
}
if ( empty( $cpcss_pending ) ) {
$this->generation_complete();
wp_send_json_success( [ 'status' => 'cpcss_complete' ] );
return;
}
set_transient( 'rocket_cpcss_generation_pending', $cpcss_pending, HOUR_IN_SECONDS );
wp_send_json_success( [ 'status' => 'cpcss_running' ] );
}
/**
* Pull one item off of the CPCSS Pending Queue and process it.
*
* @since 3.6
*
* @param array $cpcss_pending CPCSS Pending Queue.
*
* @return array remaining queue.
*/
private function process_cpcss_pending_queue( array $cpcss_pending ) {
$cpcss_item = reset( $cpcss_pending );
if ( empty( $cpcss_item ) ) {
return $cpcss_pending;
}
// Threshold 'check' > 10 = timed out.
$timeout = ( $cpcss_item['check'] > 10 );
$additional_params = [
'timeout' => $timeout,
'is_mobile' => ! empty( $cpcss_item['mobile'] ) ? (bool) $cpcss_item['mobile'] : false,
'item_type' => $cpcss_item['type'],
];
$cpcss_generation = $this->processor->process_generate(
$cpcss_item['url'],
$cpcss_item['path'],
$additional_params
);
// Increment this item's threshold count.
++$cpcss_pending[ $cpcss_item['path'] ]['check'];
$this->cpcss_heartbeat_notices( $cpcss_generation, $cpcss_item );
// Remove the item from the queue when (a) the CPCSS API returns success or error or (b) timeouts.
if (
is_wp_error( $cpcss_generation )
||
'cpcss_generation_successful' === $cpcss_generation['code']
||
'cpcss_generation_failed' === $cpcss_generation['code']
||
$timeout
) {
unset( $cpcss_pending[ $cpcss_item['path'] ] );
}
return $cpcss_pending;
}
/**
* CPCSS heartbeat update notices transients.
*
* @since 3.6
*
* @param array|\WP_Error $cpcss_generation CPCSS regeneration reply.
* @param array $cpcss_item Item processed.
*/
private function cpcss_heartbeat_notices( $cpcss_generation, $cpcss_item ) {
$mobile = isset( $cpcss_item['mobile'] ) ? $cpcss_item['mobile'] : 0;
$transient = (array) get_transient( 'rocket_critical_css_generation_process_running' );
// Initializes the transient.
if ( ! isset( $transient['items'] ) ) {
$transient['items'] = [];
}
if ( is_wp_error( $cpcss_generation ) ) {
$this->update_running_transient( $transient, $cpcss_item['path'], $mobile, $cpcss_generation->get_error_message(), false );
return;
}
if (
isset( $cpcss_generation['code'] )
&&
(
'cpcss_generation_successful' === $cpcss_generation['code']
||
'cpcss_generation_failed' === $cpcss_generation['code']
)
) {
$this->update_running_transient( $transient, $cpcss_item['path'], $mobile, $cpcss_generation['message'], ( 'cpcss_generation_successful' === $cpcss_generation['code'] ) );
}
}
/**
* Launches when the CPCSS generation is complete.
*
* @since 3.6
*/
private function generation_complete() {
$running = get_transient( 'rocket_critical_css_generation_process_running' );
if ( false === $running ) {
return;
}
if ( ! isset( $running['total'], $running['items'] ) ) {
return;
}
if ( $running['total'] > count( $running['items'] ) ) {
return;
}
/**
* Fires when the critical CSS generation process is complete.
*
* @since 2.11
*/
do_action( 'rocket_critical_css_generation_process_complete' );
rocket_clean_domain();
set_transient( 'rocket_critical_css_generation_process_complete', get_transient( 'rocket_critical_css_generation_process_running' ), HOUR_IN_SECONDS );
delete_transient( 'rocket_critical_css_generation_process_running' );
}
/**
* Enqueue CPCSS heartbeat script on all admin pages.
*
* @since 3.6
*/
public function enqueue_admin_cpcss_heartbeat_script() {
if ( ! $this->is_async_css_enabled() ) {
return;
}
wp_enqueue_script(
'wpr-heartbeat-cpcss-script',
rocket_get_constant( 'WP_ROCKET_ASSETS_JS_URL' ) . 'wpr-cpcss-heartbeat.js',
[],
rocket_get_constant( 'WP_ROCKET_VERSION' ),
true
);
wp_localize_script(
'wpr-heartbeat-cpcss-script',
'rocket_cpcss_heartbeat',
[
'nonce' => wp_create_nonce( 'cpcss_heartbeat_nonce' ),
]
);
}
/**
* Add Regenerate Critical CSS link to WP Rocket admin bar item
*
* @since 3.6
*
* @param WP_Admin_Bar $wp_admin_bar WP_Admin_Bar instance, passed by reference.
*
* @return void
*/
public function add_regenerate_menu_item( $wp_admin_bar ) {
if ( 'local' === wp_get_environment_type() ) {
return;
}
if ( ! current_user_can( 'rocket_regenerate_critical_css' ) ) {
return;
}
if ( ! is_admin() ) {
return;
}
if ( ! $this->is_async_css_enabled() ) {
return;
}
// This filter is documented in inc/Engine/CriticalPath/CriticalCSS.php.
if ( ! apply_filters( 'do_rocket_critical_css_generation', true ) ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
return;
}
$referer = '';
$action = 'rocket_generate_critical_css';
if ( ! empty( $_SERVER['REQUEST_URI'] ) ) {
$referer_url = filter_var( wp_unslash( $_SERVER['REQUEST_URI'] ), FILTER_SANITIZE_URL );
$referer = '&_wp_http_referer=' . rawurlencode( remove_query_arg( 'fl_builder', $referer_url ) );
}
$wp_admin_bar->add_menu(
[
'parent' => 'wp-rocket',
'id' => 'regenerate-critical-path',
'title' => __( 'Regenerate Critical Path CSS', 'rocket' ),
'href' => wp_nonce_url( admin_url( "admin-post.php?action={$action}{$referer}" ), $action ),
]
);
}
/**
* Checks if the "async_css" option is enabled.
*
* @since 3.6
*
* @return bool true when "async_css" option is enabled.
*/
private function is_async_css_enabled() {
return (bool) $this->options->get( 'async_css', 0 );
}
}
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