oe_whitelabel.theme

<?php

/**
 * @file
 * Functions to support theming.
 */

declare(strict_types=1);

use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Template\AttributeHelper;
use Drupal\oe_bootstrap_theme_helper\EuropeanUnionLanguages;
use Drupal\oe_whitelabel\DocumentMediaWrapper;

// Include all files from the includes directory.
$includes_path = __DIR__ . '/includes/*.inc';
foreach (glob($includes_path) as $filename) {
  // The inspection disallowing basename() is not relevant for known paths.
  // phpcs:ignore QualityAssurance.Functions.DrupalWrappers.FoundWithAlternative
  require_once __DIR__ . '/includes/' . basename($filename);
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function oe_whitelabel_form_system_theme_settings_alter(&$form, FormStateInterface &$form_state, $form_id = NULL) {
  $form['component_library'] = [
    '#type' => 'select',
    '#title' => t('Component library'),
    '#options' => [
      'neutral' => t('Neutral'),
      'ec' => t('European Commission'),
      'eu' => t('European Union'),
    ],
    '#default_value' => theme_get_setting('component_library') ?? 'neutral',
    '#description' => t('Choose "European Commission" for websites hosted under the ec.europa.eu domain and "European Union" for websites hosted under the europa.eu domain.'),
  ];
  $form['header_style'] = [
    '#type' => 'select',
    '#title' => t('Background style'),
    '#options' => [
      'standard' => t('Blue header'),
      'light' => t('Light header'),
    ],
    '#default_value' => theme_get_setting('header_style'),
    '#description' => t('Choose the header color'),
  ];
}

/**
 * Implements hook_theme_suggestions_HOOK_alter().
 */
function oe_whitelabel_theme_suggestions_field_alter(array &$suggestions, array $variables) {
  $element = $variables['element'];
  $sanitized_view_mode = strtr($element['#view_mode'], '.', '_');

  // Add a suggestion which takes into account entity type, bundle and view
  // mode.
  $view_mode_suggestion = 'field__' . $element['#entity_type'] . '__' . $element['#bundle'] . '__' . $sanitized_view_mode;

  // Search for the suggestion formed by entity type and bundle. Since field
  // suggestions are ordered by priority, we need to add new ones in the correct
  // order. The last ones in the list are field specific templates, which should
  // have a higher priority.
  $bundle_suggestion = 'field__' . $element['#entity_type'] . '__' . $element['#bundle'];
  $position = array_search($bundle_suggestion, $suggestions);

  if ($position === FALSE) {
    // The bundle suggestion comes from system_theme_suggestions_field(), so
    // it should be there but take into account scenarios where it was removed
    // by another alter hook.
    $suggestions[] = $view_mode_suggestion;
  }
  else {
    array_splice($suggestions, $position, 1, [
      $bundle_suggestion,
      $view_mode_suggestion,
    ]);
  }
}

/**
 * Implements hook_preprocess().
 */
function oe_whitelabel_preprocess(&$variables) {
  $variables['bcl_component_library'] = theme_get_setting('component_library') ?? 'neutral';
  $variables['bcl_header_style'] = theme_get_setting('header_style') ?? 'standard';
  $variables['current_language_id'] = \Drupal::languageManager()->getCurrentLanguage()->getId();
  $variables['bcl_logo_path'] = base_path() . \Drupal::service('extension.list.theme')->getPath('oe_bootstrap_theme') . '/assets/logos/';
}

/**
 * Implements hook_preprocess_HOOK() for field template.
 */
function oe_whitelabel_preprocess_field(&$variables, $hook, $info) {
  // Core doesn't merge the title attributes from render elements back into
  // the variables attributes.
  // @see template_preprocess()
  if (isset($info['render element'])) {
    $key = $info['render element'];
    if (isset($variables[$key]['#title_attributes'])) {
      $variables['title_attributes'] = AttributeHelper::mergeCollections($variables['title_attributes'], $variables[$key]['#title_attributes']);
    }
  }
}

/**
 * Implements hook_preprocess_page().
 */
function oe_whitelabel_preprocess_page(&$variables) {
  if ($variables['bcl_component_library'] === 'ec') {
    $variables['logo_aria_label'] = t('Home') . ' - ' . t('European Commission');
    $variables['site_logo_alt'] = t('European Commission logo');
    $variables['site_logo_title'] = t('European Commission');
    $site_logo_href = 'https://ec.europa.eu/info';
  }
  elseif ($variables['bcl_component_library'] === 'eu') {
    $variables['logo_aria_label'] = t('Home - European Union');
    $variables['site_logo_alt'] = t('European Union flag');
    $variables['site_logo_title'] = t('European Union');
    $site_logo_href = 'https://european-union.europa.eu';
  }
  else {
    $site_config = \Drupal::config('system.site');
    $variables['site_name'] = $site_config->get('name');
    $variables['site_logo_url'] = \Drupal::service('file_url_generator')->generateString(theme_get_setting('logo.url'));
    $variables['logo_aria_label'] = t('Home');
    $variables['site_logo_alt'] = t('Home logo');
    $variables['site_logo_title'] = t('Home');
  }

  if ($variables['bcl_component_library'] === 'neutral') {
    return;
  }
  // Provide correct icon for non-eu languages.
  $language_code = \Drupal::languageManager()->getCurrentLanguage()->getId();
  if (!EuropeanUnionLanguages::hasLanguage($language_code)) {
    if ($language_code === 'nb') {
      // Set correct icon for Norwegian language.
      $variables['current_language_id'] = 'no';
    }
    else {
      // Check whether BCL provides a logo for the language.
      $bcl_logo = $variables['bcl_logo_path'] . '/' . $variables['bcl_component_library'] . '/';
      $bcl_logo .= 'logo-' . $variables['bcl_component_library'] . '--' . $language_code . '.svg';
      if (!file_exists($bcl_logo)) {
        // Provide fallback "en" icon if language logo doesn't exist.
        $variables['current_language_id'] = 'en';
      }
    }
  }
  else {
    $site_logo_href .= '/index_' . EuropeanUnionLanguages::getInternalLanguageCode($variables['current_language_id']);
  }
  $variables['site_logo_href'] = $site_logo_href;
}

/**
 * Implements hook_preprocess_html().
 */
function oe_whitelabel_preprocess_html(array &$variables) {
  $cck_container = [
    '#type' => 'html_tag',
    '#tag' => 'div',
    '#attributes' => [
      'id' => 'cck_here',
      'role' => 'alert',
    ],
  ];

  $variables['page_top']['cck_container'] = $cck_container;
}

/**
 * Implements hook_preprocess_HOOK() for document media bundle.
 */
function oe_whitelabel_preprocess_media__document__default(&$variables) {
  /** @var \Drupal\media\Entity\Media $media */
  $media = $variables['media'];

  $wrapper = new DocumentMediaWrapper($media);
  if ($wrapper->isEmpty()) {
    return;
  }

  $variables['file'] = $wrapper->toFileValueObject();

  // Generate the file information for all available translations.
  foreach ($media->getTranslationLanguages() as $langcode => $language) {
    // We don't want to include the information of the current language again.
    if ($media->language()->getId() === $langcode) {
      continue;
    }

    $translation = $media->getTranslation($langcode);
    $wrapper = new DocumentMediaWrapper($translation);
    if ($wrapper->isEmpty()) {
      continue;
    }
    $variables['translations'][] = $wrapper->toFileValueObject();
  }
}

/**
 * Implements hook_element_info_alter().
 */
function oe_whitelabel_element_info_alter(array &$info): void {
  $module_handler = \Drupal::service('module_handler');

  if (isset($info['select']) && $module_handler->moduleExists('slim_select')) {
    $info['select']['#process'][] = '_oe_whitelabel_process_element_select';
  }
}

/**
 * Process callback for applying slim_select on elements.
 *
 * @param array $element
 *   The element to alter.
 *
 * @return array
 *   The altered element.
 *
 * @see oe_whitelabel_element_info_alter
 */
function _oe_whitelabel_process_element_select(array &$element): array {
  if (!$element['#multiple']) {
    return $element;
  }

  $element['#attributes']['class'][] = 'multi-select';
  // Config is empty so that it uses the defaults.
  $element += ['#slim_select' => []];

  return $element;
}

/**
 * Implements hook_library_info_alter().
 */
function oe_whitelabel_library_info_alter(array &$libraries, string $extension): void {
  if ('slim_select' !== $extension) {
    return;
  }

  $theme_handler = \Drupal::service('theme_handler');
  $theme_path = $theme_handler->getTheme('oe_bootstrap_theme')->getPath();
  $path = '/' . $theme_path . '/assets/js/slimselect.min.js';

  $libraries['slim.select']['js'] = [
    $path => [
      'minified' => TRUE,
      'attributes' => [
        'defer' => TRUE,
      ],
    ],
  ];
  // The slim.select css is already present in the parent theme.
  unset($libraries['slim.select']['css']);
}

/**
 * Implements hook_preprocess_HOOK() for user subscription page.
 */
function oe_whitelabel_preprocess_oe_subscriptions_user_subscriptions_page(&$variables) {
  // The content banner embeds the current page title, so we need to retrieve
  // it manually.
  $variables['page_title'] = \Drupal::service('title_resolver')->getTitle(
    \Drupal::service('request_stack')->getCurrentRequest(),
    \Drupal::service('current_route_match')->getCurrentRouteMatch()->getRouteObject()
  );
}

/**
 * Implements hook_preprocess_HOOK().
 */
function oe_whitelabel_preprocess_oe_corporate_blocks_neutral_footer(array &$variables): void {
  if (!function_exists('oe_corporate_blocks_preprocess_set_accessibility_link')) {
    return;
  }

  oe_corporate_blocks_preprocess_set_accessibility_link($variables);
}

/**
 * Implements hook_preprocess_HOOK().
 */
function oe_whitelabel_preprocess_oe_corporate_blocks_eu_footer(&$variables): void {
  if (!empty($variables['accessibility_link'])) {
    foreach ($variables['corporate_footer']['legal_links'] as $index => $link) {
      if (str_starts_with($link['href'], 'https://european-union.europa.eu/accessibility-statement')) {
        unset($variables['corporate_footer']['legal_links'][$index]);
        break;
      }
    }
  }
}

/**
 * Implements hook_preprocess_HOOK().
 */
function oe_whitelabel_preprocess_oe_corporate_blocks_ec_footer(&$variables): void {
  if (!empty($variables['accessibility_link'])) {
    foreach ($variables['corporate_footer']['service_navigation'] as $index => $link) {
      if (str_starts_with($link['href'], 'https://commission.europa.eu/accessibility-statement')) {
        unset($variables['corporate_footer']['service_navigation'][$index]);
        break;
      }
    }
  }
}