customer-cleanup.php

<?php
 /**
  * The plugin bootstrap file
  *
  * @link              https://robertdevore.com
  * @since             1.0.0
  * @package           Customer_Cleanup
  *
  * @wordpress-plugin
  *
  * Plugin Name: Customer Cleanup
  * Description: Deletes customer role users who have never made a purchase and have been registered for more than 30 days. Logs the cleanup process to a CSV file.
  * Plugin URI:  https://robertdevore.com/
  * Version:     1.0.0
  * Author:      Robert DeVore
  * Author URI:  https://robertdevore.com/
  * License:     GPL-2.0+
  * License URI: https://www.gnu.org/licenses/gpl-2.0.txt
  * Text Domain: customer-cleanup
  * Domain Path: /languages
  */
 
// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
    die;
}

/**
 * Current plugin version.
*/
define( 'CUSTOMER_CLEANUP_PLUGIN_VERSION', '1.0.0' );

/**
 * Schedule cron job on plugin activation
 * 
 * @since  1.0.0
 * @return void
 */
function customer_cleanup_activate() {
    if ( ! wp_next_scheduled( 'customer_cleanup_cleanup_users' ) ) {
        wp_schedule_event( time(), 'daily', 'customer_cleanup_cleanup_users' );
    }
}
register_activation_hook( __FILE__, 'customer_cleanup_activate' );

/**
 * Cleanup users
 * 
 * @since  1.0.0
 * @return void
 */
function customer_cleanup_cleanup_users() {
    $args = array(
        'role'   => 'customer',
        'fields' => 'ID',
    );

    $customer_users = get_users( $args );

    $deleted_users = array();

    foreach ( $customer_users as $customer_id ) {
        $user_registered      = get_user_meta( $customer_id, 'registered', true );
        $registered_timestamp = strtotime( $user_registered );
        $current_timestamp    = current_time( 'timestamp' );
        $days_registered      = floor( ( $current_timestamp - $registered_timestamp ) / ( 60 * 60 * 24 ) );

        if ( $days_registered > 30 ) {
            $args = array(
                'customer_id' => $customer_id,
                'status'      => 'completed',
            );

            $orders = wc_get_orders( $args );

            // If the customer has no completed orders, delete the user and log the deletion.
            if ( empty( $orders ) ) {
                wp_delete_user( $customer_id );
                $deleted_users[] = $customer_id;
            }
        }
    }

    if ( ! empty( $deleted_users ) ) {
        $timestamp   = date( 'YmdHis' );
        $log_folder  = WP_CONTENT_DIR . '/customercleanup/';

        if ( ! file_exists( $log_folder ) ) {
            wp_mkdir_p( $log_folder );
            touch( $log_folder . 'index.php' );
            file_put_contents( $log_folder . '.htaccess', 'Deny from all' );
        }

        $log_file     = $log_folder . 'cleanup_log_' . $timestamp . '.csv';
        $file_handle  = fopen( $log_file, 'w' );

        if ( $file_handle ) {
            fputcsv( $file_handle, array( 'User ID' ) );

            foreach ( $deleted_users as $user_id ) {
                fputcsv( $file_handle, array( $user_id ) );
            }

            fclose( $file_handle );
        }
    }
}
add_action( 'customer_cleanup_cleanup_users', 'customer_cleanup_cleanup_users' );

/**
 * Display message
 * 
 * @since  1.0.0
 * @return string
 */
function customer_cleanup_display_message() {
    $customer_users_count = count( get_users( array( 'role' => 'customer' ) ) );
    $deleted_users_count  = $customer_users_count - count( $orders );

    echo '<div class="notice notice-success is-dismissible">';
    echo '<p>Deleted ' . $deleted_users_count . 'customer role users who have never made a purchase and have been registered for more than 30 days.</p>';
    echo '</div>';
}
add_action( 'admin_notices', 'customer_cleanup_display_message' );