sitefeedback.module

<?php

/**
 * @file
 * Module file.
 */

use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function sitefeedback_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the sitefeedback module.
    case 'help.page.sitefeedback':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('This module is used to provide site feedback to admins of a system.') . '</p>';
      return $output;

    default:
  }
}

/**
 * Implements hook_theme().
 */
function sitefeedback_theme($existing, $type, $theme, $path) {
  return [
    'feedback_view' => [
      'variables' => ['feedback' => NULL],
    ],
  ];
}

/**
 * Implements hook_page_bottom().
 */
function sitefeedback_page_bottom(array &$page_bottom) {

  // Attach add feedback button to bottom right of the page if the current
  // user has access.
  if (Drupal::currentUser()->hasPermission('provide site feedback')) {
    $addLink = '<a class="use-ajax feedback-add-btn"
          data-dialog-options="{&quot;width&quot;:400}"
          data-dialog-type="modal"
          href="/admin/sitefeedback/add"><span>'
      . t('Feedback') .
      '</span></a>';

    $page_bottom['site_feedback'] = [
      '#markup' => $addLink,
    ];

    $page_bottom['#attached']['library'][] = 'sitefeedback/sitefeedbackadmin';
  }

}