soderlind/gtm-multisite-admin

<?php
/**
 * Plugin Name: Google Tag Manager Multisite Admin
 * Plugin URI: https://github.com/soderlind/gtm-multisite-admin
 * Description: Google Tag Manager Multisite Admin is an add-on to <a href="https://wordpress.org/plugins/duracelltomi-google-tag-manager/">DuracellTomi's Google Tag Manager for WordPress</a> plugin. With the add-on, you can add Google Tag Manager (GTM) IDs on the Network Sites page.
 * Author: Per Soderlind
 * Version: 0.0.6
 * Author URI: http://soderlind.no
 * GitHub Plugin URI: soderlind/gtm-multisite-admin
 */


if ( defined( 'ABSPATH' ) ) {
    define( 'GTM_PLUGIN_NAME', 'duracelltomi-google-tag-manager/duracelltomi-google-tag-manager-for-wordpress.php' );
    define( 'GTM_MULTISITE_ADMIN_VERSION', '0.0.6' );
    GTM_Multisite_Admin::instance();
}

class GTM_Multisite_Admin {

    private static $instance;
    private $pages_not_in_menu = array();

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

    private function __construct() {
        if ( is_network_admin() ) {
            add_action( 'admin_enqueue_scripts', array( $this, 'gtm_multisite_admin_scripts' ) );
            add_filter( 'wpmu_blogs_columns', array( $this, 'add_new_columns' ) );
            add_action( 'manage_sites_custom_column', array( $this, 'manage_columns' ), 10, 2 );
            add_filter( 'manage_sites-network_sortable_columns', array( $this, 'gtm_multisite_admin_sortable' ) ); //nonworkable, yet
        }
        if ( is_admin() ) {
            add_action( 'wp_ajax_gtm_multisite_admin_change_tag', array( $this, 'gtm_multisite_admin_change_tag' ) );
        }
    }

    /**
     * Load scripts
     */
    function gtm_multisite_admin_scripts() {
        // Multisite fix, use home_url() if domain mapped to avoid cross-domain issues.
        $http_scheme = ( is_ssl() ) ? 'https' : 'http';
        if ( home_url() != site_url() ) {
            $ajaxurl = home_url( '/wp-admin/admin-ajax.php', $http_scheme );
        } else {
            $ajaxurl = site_url( '/wp-admin/admin-ajax.php', $http_scheme );
        }
        $url = plugins_url( '', __FILE__ );
        wp_enqueue_script( 'change_gtm_id', $url . '/js/gtm-multisite-admin.js', array( 'jquery', 'jquery-effects-core' ), GTM_MULTISITE_ADMIN_VERSION );
        wp_localize_script( 'change_gtm_id', 'gtm_multisite_options', array(
                'nonce' => wp_create_nonce( 'gtm_multisite_admin_security' ),
                'ajaxurl' => $ajaxurl,
            )
        );
    }

    /**
     * Add new column function
     *
     * @param [type]  $columns [description]
     */
    public function add_new_columns( $columns ) {
        $columns['gtm-tag'] = __( 'GTM ID', 'dss-web' );
        return $columns;
    }

    /**
     * Render columns function
     *
     * @param [type]  $column_name [description]
     * @param [type]  $site_id     [description]
     * @return [type]              [description]
     */
    public function manage_columns( $column_name, $site_id ) {

        if ( 'gtm-tag' == $column_name ) {
            echo '<div class="gtm-multisite">';
            //delete_blog_option( $site_id, 'gtm4wp-options');
            $active_plugins = get_blog_option( $site_id, 'active_plugins' );
            $gtm_options = (array) get_blog_option( $site_id, 'gtm4wp-options' );
            if ( count( $gtm_options ) && isset( $gtm_options['gtm-code'] ) ) {
                printf( '<a href="#" class="gtm-multisite-tag" title="Click to change GTM Id" data-siteid="%s" >%s</a>
                    <input type="text"/ style="display:none">&nbsp;
                    <a href="%s/wp-admin/options-general.php?page=gtm4wp-settings">
                    <span class="dashicons dashicons-admin-settings"></span></a>',
                    $site_id,
                    $gtm_options['gtm-code'],
                    get_blog_option( $site_id, 'siteurl' )
                );
            } elseif ( is_plugin_active_for_network( GTM_PLUGIN_NAME ) || array_search( GTM_PLUGIN_NAME, $active_plugins ) ) {
                printf( '<a href="#" class="gtm-multisite-tag" title="Click to add GTM Id" data-siteid="%s" >Add ID</a>
                    <input type="text" value="" style="display:none">&nbsp;
                    <a href="%s/wp-admin/options-general.php?page=gtm4wp-settings">
                    <span class="dashicons dashicons-admin-settings"></a></span>',
                    $site_id,
                    get_blog_option( $site_id, 'siteurl' )
                );
            } else {
                // gtm not added for site
                echo 'NO GTM';
            }
            echo '</div>';
        }
    }

    /**
     * Register the column as sortable
     *
     * @param array   $columns [description]
     * @return array          [description]
     */
    function gtm_multisite_admin_sortable( $columns ) {
        $columns['gtm-tag'] = 'gtm-tag';
        return $columns;
    }

    /**
     * Ajax callback function
     *
     * @return json encoded string
     */
    public function gtm_multisite_admin_change_tag() {
        header( 'Content-type: application/json' );
        if ( check_ajax_referer( 'gtm_multisite_admin_security', 'security', false ) ) {
            $site_id   = filter_var( $_POST['site_id'],    FILTER_VALIDATE_INT, array( 'default' => 0 ) );
            $gtm_tag = filter_var( $_POST['gtm_tag'],  FILTER_SANITIZE_STRING, array( 'default' => 'Add ID' ) );
            if ( ! $site_id ) {
                $response['data'] = 'something went wrong ...';
                echo json_encode( $response );
                die();
            }
            if ( isset( $gtm_tag ) || '' == $gtm_tag ) {
                if ( 'Add ID' != $gtm_tag ) {
                    if ( '' == $gtm_tag ) {
                        delete_blog_option( $site_id, 'gtm4wp-options' );
                        $response['text']     = 'Add ID';
                        $response['response'] = 'success';
                    } else {
                        $gtm_tag_options = get_blog_option( $site_id, 'gtm4wp-options' );
                        $gtm_tag_options['gtm-code'] = $gtm_tag;
                        if ( true !== update_blog_option( $site_id, 'gtm4wp-options', $gtm_tag_options ) ) {
                            $response['response'] = 'failed';
                            $response['message']  = 'update_blog_option failed';
                        } else {
                            $response['text']     = $gtm_tag;
                            $response['response'] = 'success';
                        }
                    }
                }
            } else {
                $response['response'] = 'failed';
                $response['message']     = 'something went wrong ...';
            }
        } else {
            $response['response'] = 'failed';
            $response['message']  = 'invalid nonse';
        }
        echo json_encode( $response );
        die();
    }
}