Untitled

function my2_enqueue_scripts() {
  if (is_author()) {
      $author_id = get_the_author_meta('ID');
      
      wp_enqueue_script('my-subscribe-script', get_template_directory_uri() . '/js/subscribe.js', array('jquery'), null, true);
      wp_localize_script('my-subscribe-script', 'SubscribeData', array(
          'ajaxurl' => admin_url('admin-ajax.php'),
          'authorId' => $author_id,
      ));
  }
}
add_action('wp_enqueue_scripts', 'my2_enqueue_scripts');

add_action('wp_ajax_subscribe_author', 'subscribe_authore');
function subscribe_author_2() {
  $user_id = get_current_user_id();
  $author_id = $_POST['authorId'];

  $subscribed_authors = get_user_meta($user_id, 'sub_authors', true);
  if (!is_array($subscribed_authors)) {
      $subscribed_authors = array();
  }

  if (!in_array($author_id, $subscribed_authors)) {
      $subscribed_authors[] = $author_id;
      update_user_meta($user_id, 'sub_authors', $subscribed_authors);
      wp_send_json_success();
  } else {
      wp_send_json_error();
  }
}

add_action('wp_ajax_unsubscribe_author', 'unsubscribe_authore');
function unsubscribe_author_2() {
  $user_id = get_current_user_id();
  $author_id = $_POST['authorId'];

  $subscribed_authors = get_user_meta($user_id, 'sub_authors', true);
  if (!is_array($subscribed_authors)) {
      $subscribed_authors = array();
  }

  if (($key = array_search($author_id, $subscribed_authors)) !== false) {
      unset($subscribed_authors[$key]);
      update_user_meta($user_id, 'sub_authors', $subscribed_authors);
      wp_send_json_success();
  } else {
      wp_send_json_error();
  }
}