<?php

use Drupal\Core\Template\Attribute;

/**
 * Implements hook_theme().
 */
function dds_browser_info_theme() {
  return [
    'browser_info' => [
      'variables' => [
        'title' => NULL,
        'body' => NULL,
        'open' => NULL,
        'close' => NULL,
        'section_attributes' => [],
      ],
    ],
  ];
}

/**
 * Implements hook_page_attachments().
 */
function dds_browser_info_page_attachments(array &$attachments) {
  // Attach browser info styling to the head, so it won't be shown before styles
  // are properly loaded.
  $attachments['#attached']['library'][] = 'dds_browser_info/browser_info_styling';
}

/**
 * Implements hook_page_bottom().
 */
function dds_browser_info_page_bottom(array &$page_bottom) {
  // Get current theme.
  $theme = \Drupal::theme()->getActiveTheme()->getName();
  // Get system theme settings.
  $config = \Drupal::config('system.theme');

  if ($theme != $config->get('admin')) {
    /** @var \Drupal\site_settings\SiteSettingsLoader $site_settings_loader */
    $site_settings_loader = \Drupal::service('site_settings.loader');
    $site_settings = $site_settings_loader->loadByFieldset('accessibility');
    $section_attributes = new Attribute();

    if (isset($site_settings['browser_info']) && !empty($browser_info = $site_settings['browser_info'])) {
      $page_bottom['browser_info'] = [
        '#theme' => 'browser_info',
        '#title' => $browser_info['field_browser_info_header'],
        '#body' => $browser_info['field_browser_info_body'],
        '#section_attributes' => $section_attributes,
        '#attached' => [
          'library' => 'dds_browser_info/browser_info_no_js',
          'drupalSettings' => [
            'browserinfo' => [
              'browserinfo_behavior' => 'display_until_accepted',
            ],
          ],
        ],
        '#cache' => [
          'tags' => ['site_settings_bundle:browser_info'],
        ],
      ];
      // Adds more template data if javascript is enabled.
      if (isset($browser_info['field_allow_javascript']) && $browser_info['field_allow_javascript'] == 1) {
        $page_bottom['browser_info']['#open'] = $browser_info['field_browser_info_open'];
        $page_bottom['browser_info']['#close'] = $browser_info['field_browser_info_close'];
        $page_bottom['browser_info']['#attached'] = [
          'library' => 'dds_browser_info/browser_info_js',
          'drupalSettings' => [
            'browserinfo' => [
              'browserinfo_behavior' => isset($browser_info['field_browser_info_show_once']) && $browser_info['field_browser_info_show_once'] == 1 ? 'display_once' : 'display_until_accepted',
            ],
          ],
        ];
      }
    }
  }
}