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