felixarntz/wp-gcs-offload

<?php
/**
 * WPGCSOffload\Admin\Admin class
 *
 * @package WPGCSOffload
 * @subpackage Admin
 * @author Felix Arntz <felix-arntz@leaves-and-love.net>
 * @since 0.5.0
 */

namespace WPGCSOffload\Admin;

if ( ! defined( 'ABSPATH' ) ) {
    die();
}

if ( ! class_exists( 'WPGCSOffload\Admin\Admin' ) ) {
    /**
     * This class handles the plugin's admin functionality.
     *
     * @since 0.5.0
     */
    class Admin {
        const MENU_SLUG = 'tools.php';

        const SCREEN_SLUG = 'wp-gcs-offload';
        const MANAGE_TAB_SLUG = 'wp-gcs-offload-manage';
        const SETTINGS_TAB_SLUG = 'wp-gcs-offload-settings';

        const CAP_MANAGE = 'manage_cloud_storage';
        const CAP_SETUP = 'setup_cloud_storage';

        private static $instance = null;

        public static function instance() {
            if ( null === self::$instance ) {
                self::$instance = new self();
            }

            return self::$instance;
        }

        private function __construct() {
            // empty
        }

        public function run() {
            $menu = Menu::instance();

            $manager = Manager::instance();
            $settings = Settings::instance();
            $attachment_edit = AttachmentEdit::instance();

            $menu->set_manager( $manager );
            $menu->set_settings( $settings );

            $menu->init_pages();

            add_action( 'wpod', array( $menu, 'add_components' ) );
            add_action( 'admin_enqueue_scripts', array( $attachment_edit, 'enqueue_scripts' ), 10, 1 );
            add_action( 'attachment_submitbox_misc_actions', array( $attachment_edit, 'attachment_submitbox_misc_actions' ), 100, 0 );

            add_filter( 'map_meta_cap', array( $this, 'map_meta_cap' ), 10, 4 );
        }

        public function map_meta_cap( $caps, $cap, $user_id, $args ) {
            switch ( $cap ) {
                case self::CAP_MANAGE:
                case self::CAP_SETUP:
                    if ( ! self::is_network_active() ) {
                        return array( 'manage_options' );
                    }
                    break;
            }

            return $caps;
        }

        public static function is_network_active() {
            if ( ! is_multisite() ) {
                return false;
            }

            $network_active_plugins = get_site_option( 'lalwpplugin_activated_plugins', array() );

            return isset( $network_active_plugins['wp-gcs-offload'] );
        }

        public static function get_manage_url() {
            return add_query_arg( array(
                'page'    => self::SCREEN_SLUG,
                'tab'    => self::SETTINGS_TAB_SLUG
            ), admin_url( self::MENU_SLUG ) );
        }

        public static function get_settings_url() {
            return add_query_arg( array(
                'page'    => self::SCREEN_SLUG,
                'tab'    => self::SETTINGS_TAB_SLUG
            ), admin_url( self::MENU_SLUG ) );
        }
    }
}