illinois_framework_theme.theme

<?php

declare(strict_types=1);

use Drupal\Core\Url;
use \Drupal\Core\Form\FormStateInterface;
use Drupal\node\NodeInterface;
use Drupal\block\Entity\Block;
use Drupal\Core\Site\Settings;
use Drupal\Core\Render\Element;
use Drupal\Core\Template\Attribute;
use Drupal\Core\Menu\MenuTreeParameters;
use Drupal\paragraphs\ParagraphInterface;

/**
 * Implements hook_preprocess().
 */
function illinois_framework_theme_preprocess(array &$variables) {
  // Set the 'node' attribute in the request during previews so blocks and
  // menu trees can correctly identify the node context. This must happen
  // early in the rendering process.
  $route_match = \Drupal::routeMatch();
  if ($route_match->getRouteName() === 'entity.node.preview') {
    $node = $route_match->getParameter('node_preview');
    if ($node instanceof NodeInterface) {
      \Drupal::request()->attributes->set('node', $node);
    }
  }

  // Get the current user service.
  $current_user = \Drupal::currentUser();

  // Check if the user is authenticated to dynamically set the login/logout link.
  if ($current_user->isAuthenticated()) {
    // --- USER IS LOGGED IN ---
    // Set the link text to "Logout".
    $variables['login_logout_text'] = t('Logout');
    $variables['login_logout_url'] = Url::fromRoute('user.logout');
  }
  else {
    // --- USER IS LOGGED OUT ---
    // Set the link text to "Login".
    $variables['login_logout_text'] = t('Login');

    // Get the current page path to use as the destination parameter for the redirect.
    $destination = \Drupal::service('redirect.destination')->getAsArray();

    // Get the theme setting for direct Shibboleth login.
    $shibboleth_direct_login = theme_get_setting('if_shibboleth_login_direct');

    // Default SAML status to inactive.
    $saml_is_active = FALSE;
    // First, check if the simplesamlphp_auth module exists before trying to access its configuration.
    if (\Drupal::moduleHandler()->moduleExists('simplesamlphp_auth')) {
      // If it exists, get the configuration and check if it's active.
      $saml_config = \Drupal::config('simplesamlphp_auth.settings');
      $saml_is_active = $saml_config->get('activate');
    }

    // Check if the theme setting is enabled and the SAML module is active for authentication.
    if ($shibboleth_direct_login && $saml_is_active) {
      // The module is enabled and active, so point to the Shibboleth login with the destination.
      $login_url = Url::fromRoute('simplesamlphp_auth.saml_login', [], ['query' => $destination]);
    }
    else {
      // The module is not enabled, so use the standard Drupal login with the destination.
      $login_url = Url::fromRoute('user.login', [], ['query' => $destination]);
    }
      $variables['login_logout_url'] = $login_url;
  }

  // TODO: Condense these into a single array like ['path_vars']['var'].
  $current_path = \Drupal::service('path.current')->getPath();
  $canoncial_url = Url::fromRoute('<current>', [], ['absolute' => 'true'])->toString();
  $base_path = \Drupal::request()->getHost();
  $base_path_http = \Drupal::request()->getSchemeAndHttpHost();
  $variables['site_name_source'] = get_clean_system_site_name();
  $theme_path = \Drupal::theme()->getActiveTheme()->getPath();
  $variables['current_uri'] = \Drupal::request()->getRequestUri();
  $variables['canoncial_url'] = $canoncial_url;
  $variables['current_path'] = $current_path;
  $variables['base_path'] = $base_path;
  $variables['base_path_http'] = $base_path_http;
  $variables['base_path_success'] = (array_key_exists('HTTPS', $_SERVER) ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/';
  $variables['theme_path'] = $theme_path;
  $variables['files_path'] = $base_path_http . '/sites/' . $base_path . '/files/';
  $variables['#attached']['drupalSettings']['google_cse']['google_api'] = Settings::get('google_api', 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');

  // Theme variables.
  $variables['if_secondary_site_title'] = theme_get_setting('if_secondary_site_title');
  $variables['if_secondary_site_link'] = theme_get_setting('if_secondary_site_link');
  $variables['if_header_links'][0][0] = theme_get_setting('if_header_text_1');
  $variables['if_header_links'][0][1] = theme_get_setting('if_header_link_1');
  $variables['if_header_links'][1][0] = theme_get_setting('if_header_text_2');
  $variables['if_header_links'][1][1] = theme_get_setting('if_header_link_2');
  $variables['if_header_links'][2][0] = theme_get_setting('if_header_text_3');
  $variables['if_header_links'][2][1] = theme_get_setting('if_header_link_3');
  $variables['if_footer_google_translate'] = theme_get_setting('if_footer_google_translate');
  $variables['if_footer']['if_footer_address']['if_footer_address_unit'] = theme_get_setting('if_footer_address_unit');
  $variables['if_footer']['if_footer_address']['if_footer_address_street_one'] = theme_get_setting('if_footer_address_street_one');
  $variables['if_footer']['if_footer_address']['if_footer_address_street_two'] = theme_get_setting('if_footer_address_street_two');
  $variables['if_footer']['if_footer_address']['if_footer_address_city'] = theme_get_setting('if_footer_address_city');
  $variables['if_footer']['if_footer_address']['if_footer_address_state'] = theme_get_setting('if_footer_address_state');
  $variables['if_footer']['if_footer_address']['if_footer_address_zip'] = theme_get_setting('if_footer_address_zip');
  $variables['if_footer']['if_footer_address']['if_footer_address_tel'] = theme_get_setting('if_footer_address_tel');
  $variables['if_footer']['if_footer_address']['if_footer_address_email'] = theme_get_setting('if_footer_address_email');

  // Set the social media links into a variable so we can use array_filter to exclude empty items
  $if_footer_social = [
    // Use the lowercase name of the social media supported by the framework.
    'instagram' => theme_get_setting('if_footer_social_instagram'),
    'facebook' => theme_get_setting('if_footer_social_facebook'),
    // Add an override for the setting to adjust for renaming twitter to x.
    'x' => theme_get_setting('if_footer_social_twitter'),
    'youtube' => theme_get_setting('if_footer_social_youtube'),
    'linkedin' => theme_get_setting('if_footer_social_linkedin'),
    'bluesky' => theme_get_setting('if_footer_social_bluesky'),
    'calendar' => theme_get_setting('if_footer_social_calendar'),
    'tiktok' => theme_get_setting('if_footer_social_tiktok'),
    'pinterest' => theme_get_setting('if_footer_social_pinterest'),
    'snapchat' => theme_get_setting('if_footer_social_snapchat'),
    'weibo' => theme_get_setting('if_footer_social_weibo'),
    'whatsapp' => theme_get_setting('if_footer_social_whatsapp'),
    'threads' => theme_get_setting('if_footer_social_threads'),
  ];

  // Remove empty elements and set them to the right variable
  $variables['if_footer']['if_footer_social'] = array_filter($if_footer_social);

  $variables['if_footer_colleges'][0][0] = theme_get_setting('if_footer_college_text_1');
  $variables['if_footer_colleges'][0][1] = theme_get_setting('if_footer_college_link_1');
  $variables['if_footer_colleges'][1][0] = theme_get_setting('if_footer_college_text_2');
  $variables['if_footer_colleges'][1][1] = theme_get_setting('if_footer_college_link_2');
  $variables['if_footer_colleges'][2][0] = theme_get_setting('if_footer_college_text_3');
  $variables['if_footer_colleges'][2][1] = theme_get_setting('if_footer_college_link_3');
  $variables['if_footer_colleges'][3][0] = theme_get_setting('if_footer_college_text_4');
  $variables['if_footer_colleges'][3][1] = theme_get_setting('if_footer_college_link_4');
  $variables['if_footer_colleges'][4][0] = theme_get_setting('if_footer_college_text_5');
  $variables['if_footer_colleges'][4][1] = theme_get_setting('if_footer_college_link_5');
  $variables['if_footer_colleges']['if_footer_colleges_one'] = theme_get_setting('if_footer_colleges_one');

  $variables['if_footer']['if_footer_menu_block_checkbox'] = theme_get_setting('if_footer_menu_block_checkbox');
  $variables['if_subfooter'][0][0] = theme_get_setting('if_subfooter_text_1');
  $variables['if_subfooter'][0][1] = theme_get_setting('if_subfooter_link_1');
  $variables['if_subfooter'][1][0] = theme_get_setting('if_subfooter_text_2');
  $variables['if_subfooter'][1][1] = theme_get_setting('if_subfooter_link_2');
  $variables['if_subfooter'][2][0] = theme_get_setting('if_subfooter_text_3');
  $variables['if_subfooter'][2][1] = theme_get_setting('if_subfooter_link_3');
  $variables['if_subfooter'][3][0] = theme_get_setting('if_subfooter_text_4');
  $variables['if_subfooter'][3][1] = theme_get_setting('if_subfooter_link_4');
  $variables['if_subfooter'][4][0] = theme_get_setting('if_subfooter_text_5');
  $variables['if_subfooter'][4][1] = theme_get_setting('if_subfooter_link_5');
}

/**
 * A helper function to transform the site name into a machine safe name.
 *
 * This is used in the ilw-header and ilw-footer as a source attribute.
 *
 * @return string
 *   The cleaned site name string.
 */
function get_clean_system_site_name() {
  $name = Drupal::config('system.site')->get('name');

  // Replaces:
  // Ampersand to "and".
  $name = preg_replace('/[&]/u', 'and', $name);
  // Dashes and spaces to an underscore.
  $name = preg_replace('/[- ]/u', '_', $name);
  // Any non-alphanumeric with nothing.
  $name = preg_replace('/[^_a-zA-Z0-9]/u', '', $name);

  // And then:
  // Make string all lowercase.
  $name = strtolower($name);

  return $name;
}

/**
 * Implements hook_theme_suggestions_HOOK_alter() for page.html.twig.
 */
function illinois_framework_theme_theme_suggestions_page_alter(array &$suggestions, array $variables, $hook) {
  // Error page template suggestions.
  $exception = Drupal::requestStack()->getCurrentRequest()->attributes->get('exception');
  if ($exception !== NULL) {
    $status_code = $exception->getStatusCode();
    $suggestions[] = 'page__' . (string) $status_code;
  }

  // Provide page template suggestions per content type.
  $node = \Drupal::routeMatch()->getParameter('node') ?: \Drupal::routeMatch()->getParameter('node_preview');
  if ($node instanceof NodeInterface) {
    $suggestions[] = 'page__' . $node->bundle();
  }
}

/**
 * Implements hook_preprocess_HOOK() for block.html.twig.
 *
 * Pass block region value to content so this can be used in
 * illinois_framework_theme_theme_suggestions_menu_alter.
 */
function illinois_framework_theme_preprocess_block(&$variables) {
  if (isset($variables['elements']['#id'])) {
    $block_entity = Block::load($variables['elements']['#id']);
    if ($block_entity) {
      $region = $block_entity->getRegion();
      $variables['content']['#attributes']['region'] = $region;
    }
  }
}

/**
 * Implements hook_theme_suggestions_HOOK_alter() for menu.html.twig.
 *
 * Provide region based menu suggestions.
 */
function illinois_framework_theme_theme_suggestions_menu_alter(array &$suggestions, array $variables) {
  if (isset($variables['attributes']['region'])) {
    $suggestion = 'menu__' . $variables['menu_name'] . '__' . $variables['attributes']['region'];
    $suggestions[] = str_replace('-', '_', $suggestion);
  }
}

/**
 * Adds a button class to the UofI login button
 *
 * @param $form
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 * @param $form_id
 */
function illinois_framework_theme_form_user_login_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  $form['actions']['submit'] = [
    '#type' => 'submit',
    '#value' => t('Log in'),
    '#attributes' => array('class' => array('btn--login')),
  ];
  if (isset($form['simplesamlphp_auth_login_link'])) {
    $form['simplesamlphp_auth_login_link']['#attributes']['class'] = 'ilw-button ilw-theme-orange-solid ilw-button-large simplesamlphp-auth-login-link';
    $form['simplesamlphp_auth_login_link']['#weight'] = -100; // Ensure the button appears before the standard submit button.
    $form['simplesamlphp_auth_login_link']['#suffix'] = '<h2 class="local-login">' . t('Admin Login') . '</h2>';
    $form['simplesamlphp_auth_login_link']['#attributes']['autofocus'] = 'autofocus';

    if (isset($form['name'])) {
      unset($form['name']['#attributes']['autofocus']);
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for page.html.twig.
 *
 * This function handles multiple responsibilities related to page preprocessing:
 * - Puts "full width" paragraphs into a page-level variable so they can be rendered in a different part of the template.
 * - Adding a class to the body for 404 pages.
 * - Managing the logic for showing/hiding the sidebar based on node fields.
 *
 */
function illinois_framework_theme_preprocess_page(array &$variables): void {
  //adds a class to 404 page to control margins
  if (\Drupal::routeMatch()->getRouteName() === 'system.404') {
    $variables['attributes']['class'][] = 'is-404';
  }

  // Get the current node from the route match.
  $route_match = \Drupal::routeMatch();
  $node = $route_match->getParameter('node') ?: $route_match->getParameter('node_preview');

  // Ensure 'node' is available in the page template (especially for previews).
  if ($node instanceof NodeInterface && !isset($variables['node'])) {
    $variables['node'] = $node;
  }

  // Handle preview specific logic.
  $variables['is_preview'] = $route_match->getRouteName() === 'entity.node.preview';

  // The default is to show the sidebar unless the node has a field_sidebar value of 'nosidebar'
  $variables['show_sidebar'] = TRUE;
  $variables['node_has_sidebar'] = TRUE;

  if ($node instanceof NodeInterface) {
    // Determine if the sidebar should be hidden
    if ($node->hasField('field_sidebar') && !$node->get('field_sidebar')->isEmpty()) {
      $sidebar_value = $node->get('field_sidebar')->value;
      if ($sidebar_value === 'nosidebar') {
        $variables['show_sidebar'] = FALSE;
        $variables['node_has_sidebar'] = FALSE;
      }
    }

    // During preview, if sidebar_first is empty but we expect a sidebar,
    // manually inject the menu tree into the region.
    if ($variables['is_preview'] && empty($variables['page']['sidebar_first']) && $variables['node_has_sidebar']) {
      $menu_build = _illinois_framework_theme_get_preview_sidebar_menu($node);
      if (!empty($menu_build)) {
        $variables['page']['sidebar_first']['sidenavigation'] = $menu_build;
      }
    }

    // Only proceed with paragraph splitting if it is a content_page and sidebar mode is active.
    if ($node->bundle() === 'content_page' && $variables['node_has_sidebar']) {
      // Determine the split point.
      $split_at = 0;
      if ($node->hasField('field_sidebar_paragraphs') && !$node->get('field_sidebar_paragraphs')->isEmpty()) {
        $split_at = (int) $node->get('field_sidebar_paragraphs')->value;
      }

      // Check if the paragraph field exists.
      if ($node->hasField('field_paragraph') && !$node->get('field_paragraph')->isEmpty()) {
        $view_builder = \Drupal::entityTypeManager()->getViewBuilder('paragraph');
        $full_width_render = [];
        $items = $node->get('field_paragraph')->referencedEntities();

        // Build individual render arrays for the paragraphs that should be full-width.
        foreach ($items as $index => $paragraph) {
          if ($index >= $split_at) {
            $full_width_render[] = $view_builder->view($paragraph, 'full');
          }
        }

        // Assign the clean list of render arrays to the page-level variable.
        if (!empty($full_width_render)) {
          $variables['page']['full_width_paragraphs'] = $full_width_render;
        }
      }
    }
  }
}

/**
 * Helper function to retrieve the sidebar menu render array during previews.
 *
 * @param \Drupal\node\NodeInterface $node
 *   The node currently being previewed.
 *
 * @return array
 *   A render array representing the active menu trail, or an empty array.
 */
function _illinois_framework_theme_get_preview_sidebar_menu(NodeInterface $node): array {
  $menu_name = 'main';
  $parent_id = NULL;

  // 1. Try to get menu parent from node's unsaved menu settings.
  if (isset($node->menu) && is_array($node->menu) && !empty($node->menu['enabled'])) {
    $menu_name = $node->menu['menu_name'] ?? 'main';
    $parent_id = $node->menu['parent'] ?? NULL;
    if ($parent_id && str_contains($parent_id, ':')) {
      // The parent string often contains the menu name prefix (e.g. 'main:plugin_id').
      $parts = explode(':', $parent_id, 2);
      $parent_id = $parts[1] ?? NULL;
    }
  }

  // 2. Fallback: Search existing links for this node via the link manager.
  if (!$parent_id && $node->id()) {
    $menu_link_manager = \Drupal::service('plugin.manager.menu.link');
    $links = $menu_link_manager->loadLinksByRoute('entity.node.canonical', ['node' => $node->id()]);
    if ($links) {
      $link = reset($links);
      $parent_id = $link->getParent();
      $menu_name = $link->getMenuName();
      // If the node itself is at level 1, use its own link as root to show children.
      if (!$parent_id) {
        $parent_id = $link->getPluginId();
      }
    }
  }

  $menu_tree = \Drupal::menuTree();
  $parameters = new MenuTreeParameters();

  if ($parent_id) {
    $parameters->setRoot($parent_id);
    $parameters->excludeRoot();
    $parameters->setActiveTrail([$parent_id]);
  }
  else {
    // 3. Last resort fallback: Show the top levels of the main menu.
    $parameters->setMaxDepth(2);
  }

  $tree = $menu_tree->load($menu_name, $parameters);
  $manipulators = [
    ['callable' => 'menu.default_tree_manipulators:checkAccess'],
    ['callable' => 'menu.default_tree_manipulators:generateIndexAndSort'],
  ];
  $tree = $menu_tree->transform($tree, $manipulators);

  if (!empty($tree)) {
    $menu_build = $menu_tree->build($tree);
    // Enforce the specific theme suggestion for the sidebar navigation block.
    // The double 'menu__' matches the template file 'menu--menu--side-bar-first.html.twig'.
    $menu_build['#theme'] = 'menu__menu__side_bar_first';
    $menu_build['#menu_name'] = $menu_name;
    return $menu_build;
  }

  return [];
}

/**
 * Implements hook_preprocess_HOOK() for node.html.twig.
 *
 * This function handles the logic for splitting paragraphs into main content
 * and sidebar based on the node's field_sidebar_paragraphs value, but only if
 * the sidebar is active. It also ensures this logic only runs in 'full' or
 * 'preview' view modes to avoid unintended consequences in teasers or other
 * view modes.
 */
function illinois_framework_theme_preprocess_node(array &$variables): void {
  $node = $variables['node'];

  $node_has_sidebar = TRUE;
  if ($node->hasField('field_sidebar') && !$node->get('field_sidebar')->isEmpty()) {
    if ($node->get('field_sidebar')->value === 'nosidebar') {
      $node_has_sidebar = FALSE;
    }
  }

  // Only remove paragraphs from the main content if it's a content_page in full or preview mode, and the sidebar is active.
  if ($node->bundle() === 'content_page' && ($variables['view_mode'] === 'full' || $variables['view_mode'] === 'preview')) {
    // If sidebar mode is active, hide the paragraphs that were moved to the page variable.
    if ($node_has_sidebar) {
      $split_at = 0;
      if ($node->hasField('field_sidebar_paragraphs') && !$node->get('field_sidebar_paragraphs')->isEmpty()) {
        $split_at = (int) $node->get('field_sidebar_paragraphs')->value;
      }

      if (isset($variables['content']['field_paragraph'])) {
        $children = Element::children($variables['content']['field_paragraph']);
        foreach ($children as $index => $key) {
          // Remove paragraphs from index $split_at and beyond.
          if ($index >= $split_at) {
            unset($variables['content']['field_paragraph'][$key]);
          }
        }
      }
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for menu_local_tasks.
 *
 * Remove the "Delete" tab from the local tasks (tabs).
 */
function illinois_framework_theme_preprocess_menu_local_tasks(&$variables) {
  foreach (['primary', 'secondary'] as $type) {
    if (!empty($variables[$type])) {
      foreach (\Drupal\Core\Render\Element::children($variables[$type]) as $key) {
        // Hide standard entity delete form tabs
        if (strpos((string) $key, 'delete_form') !== FALSE) {
          unset($variables[$type][$key]);
          continue;
        }

        // Additional check by route name just in case the key differs
        if (isset($variables[$type][$key]['#link']['url'])) {
          $url = $variables[$type][$key]['#link']['url'];
          if ($url instanceof \Drupal\Core\Url) {
            $route_name = $url->getRouteName();
            if (strpos($route_name, '.delete_form') !== FALSE) {
              unset($variables[$type][$key]);
            }
          }
        }
      }
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for menu.html.twig.
 *
 * Add the parent item to the template for the side navigation.
 */
function illinois_framework_theme_preprocess_menu(array &$variables) {
  /** @var \Drupal\Core\Menu\MenuLinkManagerInterface $menu_link_manager */
  $menu_link_manager = \Drupal::service('plugin.manager.menu.link');
  $first = reset($variables['items']);
  if ($first && isset($first['original_link'])) {
    $item = $first['original_link'];
    // If the first item has a parent, add that parent to the template so we
    // can render it in the same list.
    if ($item?->getParent()) {
      /** @var \Drupal\Core\Utility\LinkGenerator $link_generator */
      $link_generator = \Drupal::service('link_generator');
      $parent = $menu_link_manager->createInstance($item->getParent());
      $variables['parent_name'] = $parent->getTitle();
      $variables['parent_url'] = $parent->getUrlObject();

      // Required for Drupal to manage the aria-current attribute.
      $variables['parent_url']->setOption('set_active_class', TRUE);

      $variables['parent_url']->setOption('attributes', ['class' => ['ilw-section-nav--root']]);

      // Create the render array we'll use in the template.
      $variables['parent_a'] = $link_generator->generate($parent->getTitle(), $variables['parent_url']);
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for paragraph.html.twig.
 *
 * This function handles propagating background colors from parent paragraphs
 * (like bb and icon_row) to their children, and maps icon keys to CSS classes.
 */
function illinois_framework_theme_preprocess_paragraph(array &$variables) {
  $paragraph = $variables['paragraph'] ?? ($variables['elements']['#paragraph'] ?? NULL);

  if (!$paragraph instanceof ParagraphInterface) {
    return;
  }

  // --- Background propagation for bb_content and icon_row_content ---
  // This code passes the background color setting from the parent
  // paragraph down to the child paragraph.
  $bundle = $paragraph->bundle();
  if ($bundle === 'bb_content' || $bundle === 'icon_row_content') {
    $parent = $paragraph->getParentEntity();
    if ($parent instanceof ParagraphInterface && ($parent->bundle() === 'bb' || $parent->bundle() === 'icon_row')) {
      if ($parent->bundle() === 'bb' && $parent->hasField('field_bb_background') && !$parent->get('field_bb_background')->isEmpty()) {
        $variables['bb_background'] = $parent->get('field_bb_background')->value;
      }
      elseif ($parent->bundle() === 'icon_row' && $parent->hasField('field_icon_row_background') && !$parent->get('field_icon_row_background')->isEmpty()) {
        $variables['bb_background'] = $parent->get('field_icon_row_background')->value;
      }
      else {
        $variables['bb_background'] = 'white';
      }
    }
    else {
      // Fallback default when no suitable parent is found.
      $variables['bb_background'] = 'white';
    }
  }

  // --- Icon mapping for paragraph cta and icon_row_content ---
  if ($bundle === 'cta' || $bundle === 'icon_row_content') {
    $icon_key = '';
    if ($paragraph->hasField('field_icon_row_content_icon') && !$paragraph->get('field_icon_row_content_icon')->isEmpty()) {
      $first = $paragraph->get('field_icon_row_content_icon')->first();
      if ($first) {
        $val = $first->getValue();
        $icon_key = (string) ($val['value'] ?? $val['target_id'] ?? '');
      }
    }


    $icon_map = [
      'il-icon-admissions'    => 'admissions-line',
      'il-icon-alumni'        => 'alumni-line',
      'il-icon-apply-now'     => 'apply-now-line',
      'il-icon-audio'         => 'audio-line',
      'audio-transcript'      => 'audio-transcript-line',
      'il-icon-back'          => 'back-line',
      'bluesky'               => 'bluesky-line',
      'il-icon-calendar'      => 'calendar-line',
      'il-icon-cancel-exit'   => 'cancel-line',
      'check'                 => 'check-line',
      'il-icon-comment'       => 'comment-line',
      'il-icon-directory'     => 'directory-line',
      'il-icon-document'      => 'document-line',
      'il-icon-donor'         => 'donor-line',
      'il-icon-download'      => 'download-line',
      'il-icon-email'         => 'email-line',
      'il-icon-event'         => 'event-line',
      'il-icon-facebook'      => 'facebook-line',
      'il-icon-faculty-staff' => 'faculty-line',
      'faq'                   => 'faq-line',
      'il-icon-favorite'      => 'favorite-line',
      'flickr'                => 'flickr-line',
      'github'                => 'github-line',
      'il-icon-give-gift'     => 'gift-line',
      'il-icon-google-plus'   => 'google-plus-line',
      'il-icon-handbook-manual'=> 'handbook-line',
      'il-icon-home'          => 'home-line',
      'il-icon-hours'         => 'hours-line',
      'il-icon-hr'            => 'hr-line',
      'il-icon-image'         => 'image-line',
      'il-icon-inclusive'     => 'inclusive-line',
      'il-icon-info'          => 'info-line',
      'il-icon-instagram'     => 'instagram-line',
      'il-icon-intranet'      => 'intranet-line',
      'il-icon-job-employment'=> 'employment-line',
      'il-icon-less'          => 'less-line',
      'il-icon-link'          => 'link-line',
      'il-icon-linkedin'      => 'linkedin-line',
      'il-icon-location'      => 'location-line',
      'mastodon'              => 'mastodon-line',
      'il-icon-menu'          => 'menu-line',
      'il-icon-more'          => 'more-line',
      'il-icon-news'          => 'news-line',
      'il-icon-next'          => 'next-line',
      'il-icon-notification'  => 'notification-line',
      'il-icon-parent-family' => 'family-line',
      'il-icon-partners'      => 'partners-line',
      'il-icon-pay-bill'      => 'pay-line',
      'pause'                 => 'pause-line',
      'pdf'                   => 'pdf-line',
      'play'                  => 'play-line',
      'il-icon-phone-call'    => 'phone-line',
      'il-icon-pinterest'     => 'pinterest-line',
      'il-icon-plan'          => 'plan-line',
      'il-icon-program-of-study'=> 'program-of-study-line',
      'reddit'                => 'reddit-line',
      'il-icon-research'      => 'research-line',
      'il-icon-resources'     => 'resources-line',
      'il-icon-safety'        => 'safety-line',
      'il-icon-search'        => 'search-line',
      'il-icon-send'          => 'send-line',
      'il-icon-settings'      => 'settings-line',
      'il-icon-shop'          => 'shop-line',
      'il-icon-sitemap'       => 'sitemap-line',
      'il-icon-snapchat'      => 'snapchat-line',
      'spotify'               => 'spotify-line',
      'il-icon-students'      => 'students-line',
      'il-icon-submit'        => 'submit-line',
      'il-icon-team'          => 'team-line',
      'threads'               => 'threads-line',
      'tiktok'                => 'tiktok-line',
      'il-icon-tickets'       => 'tickets-line',
      'il-icon-trash'         => 'trash-line',
      'il-icon-twitter'       => 'twitter-line',
      'il-icon-unit'          => 'unit-line',
      'il-icon-user'          => 'user-line',
      'il-icon-video'         => 'video-line',
      'il-icon-volume'        => 'volume-line',
      'il-icon-website'       => 'website-line',
      'il-icon-weibo'         => 'weibo-line',
      'il-icon-whatsapp'      => 'whatsapp-line',
      'il-icon-workshop-training'=> 'workshop-line',
      'x'                     => 'x-line',
      'yelp'                  => 'yelp-line',
      'il-icon-youtube'       => 'youtube-line',
    ];

    $variables['cta_icon'] = $icon_map[$icon_key] ?? '';
  }
}

/**
 * Implements hook_preprocess_HOOK() for breadcrumb.html.twig.
 */
function illinois_framework_theme_preprocess_breadcrumb(array &$variables) {
  if ($variables['breadcrumb']) {
    $request = \Drupal::request();
    $route_match = \Drupal::routeMatch();
    $page_title = \Drupal::service('title_resolver')->getTitle($request, $route_match->getRouteObject());

    if (!empty($page_title)) {
      $variables['breadcrumb'][] = [
        'text' => $page_title,
        'attributes' => new Attribute(['class' => ['active']]),
      ];
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for paragraph--feature-split.html.twig.
 */
function illinois_framework_theme_preprocess_paragraph__feature_split(array &$variables) {
  $paragraph = $variables['paragraph'];

  // Reverse attribute.
  $variables['reverse'] = FALSE;
  if (!$paragraph->field_feature_split_img_align->isEmpty()) {
    $variables['reverse'] = $paragraph->field_feature_split_img_align->value === 'right';
  }

  // Max width class.
  $variables['max_width_class'] = 'full-width';
  if (!$paragraph->field_feature_split_img_width->isEmpty()) {
    if ($paragraph->field_feature_split_img_width->value === 'fixed') {
      $variables['max_width_class'] = 'fixed-width';
    }
  }

  // Ensure the class is added to the renderable attributes and classes array
  if (empty($variables['attributes']) || !($variables['attributes'] instanceof Attribute)) {
    $variables['attributes'] = new Attribute();
  }
  $variables['attributes']->addClass($variables['max_width_class']);

  if (empty($variables['classes']) || !is_array($variables['classes'])) {
    $variables['classes'] = [];
  }
  $variables['classes'][] = $variables['max_width_class'];

  // Theme.
  $variables['theme'] = '';
  if (!$paragraph->field_feature_split_background->isEmpty()) {
    $background_value = $paragraph->field_feature_split_background->value;
    switch ($background_value) {
      case 'illiniblue':
        $variables['theme'] = 'blue';
        break;
      case 'bluegradient':
        $variables['theme'] = 'blue-gradient';
        break;
      case 'orangegradient':
        $variables['theme'] = 'orange-gradient';
        break;
      default:
        $variables['theme'] = $background_value;
    }
  }
}

/**
 * Implements hook_preprocess_HOOK() for paragraph--accordion-content.html.twig.
 */
function illinois_framework_theme_preprocess_paragraph__accordion_content(array &$variables) {
  $variables['has_parent_title'] = FALSE;

  $paragraph = $variables['paragraph'] ?? NULL;
  if (!$paragraph instanceof ParagraphInterface) {
    return;
  }

  $parent = $paragraph->getParentEntity();
  if (!$parent instanceof ParagraphInterface) {
    return;
  }

  if ($parent->hasField('field_accordion_title') && !$parent->get('field_accordion_title')->isEmpty()) {
    $variables['has_parent_title'] = TRUE;
  }
}

/**
 * Implements hook_preprocess_HOOK() for field.html.twig.
 */
function illinois_framework_theme_preprocess_field(array &$variables) {
  // 1. Check if we are dealing with the 'body' field on a 'node' entity.
  // This implicitly excludes paragraphs or blocks that might also have a body field.
  if ($variables['entity_type'] === 'node' && $variables['field_name'] === 'body') {
    $view_mode = $variables['element']['#view_mode'];

    if ($view_mode === 'default' || $view_mode === 'full') {
      // Inject the custom CSS class into the field's wrapper attributes.
      // Ensure the attributes object exists and is an Attribute instance (usually is).
      if (!isset($variables['attributes']['class'])) {
        $variables['attributes']['class'] = [];
      }
      $variables['attributes']['class'][] = 'node-body-field-full-display';
    }
  }
}
/**
 * Implements hook_preprocess_HOOK() for region.html.twig.
 *
 * This adds a variable to identify if the current page is the front page, which can be used for conditional logic in region templates.
 */
function illinois_framework_theme_preprocess_region(array &$variables): void {
  $variables['is_front'] = \Drupal::service('path.matcher')->isFrontPage();
}