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<?php
/**
* A class that adds a scan and backup link to the admin sidebar.
*
* @package automattic/jetpack
*/
namespace Automattic\Jetpack\Scan;
use Automattic\Jetpack\Redirect;
use Jetpack_Core_Json_Api_Endpoints;
/**
* Class Main
*
* Responsible for showing the link if available.
*
* @package Automattic\Jetpack\Scan
*/
class Admin_Sidebar_Link {
const SCHEDULE_ACTION_HOOK = 'jetpack_scan_refresh_states_event';
/**
* The singleton instance of this class.
*
* @var Admin_Sidebar_Link
*/
protected static $instance;
/**
* Used to check if we need to schedule the refresh or we need to do it.
*
* @var boolean | null
*/
private $schedule_refresh_checked;
/**
* Get the singleton instance of the class.
*
* @return Admin_Sidebar_Link
*/
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new Admin_Sidebar_Link();
self::$instance->init_hooks();
}
return self::$instance;
}
/**
* Adds action hooks.
*/
public function init_hooks() {
add_action( 'jetpack_admin_menu', array( $this, 'maybe_add_admin_link' ), 99 );
add_action( self::SCHEDULE_ACTION_HOOK, array( $this, 'refresh_state_cache' ) );
}
/**
* Adds a link to the Scan and Backup page.
*/
public function maybe_add_admin_link() {
if ( ! $this->should_show_link() ) {
return;
}
$has_scan = $this->has_scan();
$show_backup = $this->should_show_backup();
$url = Redirect::get_url( 'calypso-backups' );
if ( $has_scan && ! $show_backup ) {
$menu_label = __( 'Scan', 'jetpack' );
$url = Redirect::get_url( 'calypso-scanner' );
} elseif ( ! $has_scan && $show_backup ) {
$menu_label = __( 'Backup', 'jetpack' );
} else {
// Will be both, as the code won't get this far if neither is true (see should_show_link()).
$menu_label = __( 'Backup & Scan', 'jetpack' );
}
add_submenu_page( 'jetpack', $menu_label, esc_html( $menu_label ) . ' <span class="dashicons dashicons-external"></span>', 'manage_options', esc_url( $url ), null, $this->get_link_offset() );
}
/**
* We create a menu offset by counting all the pages that have a jetpack_admin_page set as the capability.
*
* This makes it so that the highlight of the pages works as expected. When you click on the Setting or Dashboard.
*
* @return int Menu offset.
*/
private function get_link_offset() {
global $submenu;
$offset = 0;
foreach ( $submenu['jetpack'] as $link ) {
if ( 'jetpack_admin_page' !== $link[1] ) {
break;
}
$offset++;
}
return $offset;
}
/**
* Refreshes the state cache via API call. Called via cron.
*/
public function refresh_state_cache() {
Jetpack_Core_Json_Api_Endpoints::get_scan_state();
Jetpack_Core_Json_Api_Endpoints::get_rewind_data();
}
/**
* Returns true if the link should appear.
*
* @return boolean
*/
private function should_show_link() {
// Jetpack Scan/Backup is currently not supported on multisite.
if ( is_multisite() ) {
return false;
}
// Check if VaultPress is active, the assumption there is that VaultPress is working.
// It has its link the adminbar.
if ( class_exists( 'VaultPress' ) ) {
return false;
}
return $this->has_scan() || $this->should_show_backup();
}
/**
* Check if we should display the Backup menu item.
*
* It will only be displayed if site has Backup enabled and the stand-alone Backup plugin is not active, because it will have a menu item of its own.
*
* @return boolean
*/
private function should_show_backup() {
return $this->has_backup() && ! $this->has_backup_plugin();
}
/**
* Detects if Scan is enabled.
*
* @return boolean
*/
private function has_scan() {
$this->maybe_refresh_transient_cache();
$scan_state = get_transient( 'jetpack_scan_state' );
return ! $scan_state || 'unavailable' !== $scan_state->state;
}
/**
* Detects if Backup is enabled.
*
* @return boolean
*/
private function has_backup() {
$this->maybe_refresh_transient_cache();
$rewind_state = get_transient( 'jetpack_rewind_state' );
return ! $rewind_state || 'unavailable' !== $rewind_state->state;
}
/**
* Detects if Backup plugin is active.
*
* @return boolean
*/
private function has_backup_plugin() {
return class_exists( 'Jetpack_Backup' );
}
/**
* Triggers a cron job to refresh the Scan and Rewind state cache.
*/
private function maybe_refresh_transient_cache() {
if ( $this->schedule_refresh_checked ) {
return;
}
// Do we have a jetpack_scan and jetpack_rewind state set?
if ( get_transient( 'jetpack_scan_state' ) && get_transient( 'jetpack_rewind_state' ) ) {
return;
}
if ( false === wp_next_scheduled( self::SCHEDULE_ACTION_HOOK ) ) {
wp_schedule_single_event( time(), self::SCHEDULE_ACTION_HOOK );
}
$this->schedule_refresh_checked = true;
}
}
|
GitWeb