islandora_mirador_annotations/islandora_mirador_annotations.module

<?php

/**
 * @file
 * Runtime integration for Islandora Mirador Annotations.
 */

use Drupal\Core\Asset\AttachedAssetsInterface;
use Drupal\Core\Url;

/**
 * Implements hook_library_info_alter().
 *
 * The base module remains untouched. We replace only its viewer dependency on
 * the stock Mirador bundle with our compatible bundle containing the same
 * Islandora plugins plus Mirador Annotation Editor.
 */
function islandora_mirador_annotations_library_info_alter(array &$libraries, $extension) {
  if ($extension !== 'islandora_mirador' || empty($libraries['viewer']['dependencies'])) {
    return;
  }

  $libraries['viewer']['dependencies'] = array_values(array_filter(
    $libraries['viewer']['dependencies'],
    static fn ($dependency) => $dependency !== 'islandora_mirador/mirador'
  ));

  if (!in_array('islandora_mirador_annotations/annotated_mirador', $libraries['viewer']['dependencies'], TRUE)) {
    $libraries['viewer']['dependencies'][] = 'islandora_mirador_annotations/annotated_mirador';
  }
}

/**
 * Implements hook_js_settings_alter().
 */
function islandora_mirador_annotations_js_settings_alter(array &$settings, AttachedAssetsInterface $assets) {
  if (empty($settings['mirador']['viewers']) || !is_array($settings['mirador']['viewers'])) {
    return;
  }

  $account = \Drupal::currentUser();
  if (!$account->hasPermission('view mirador annotations')) {
    return;
  }

  $endpoint = Url::fromRoute('islandora_mirador_annotations.collection', [], ['absolute' => TRUE])->toString();
  $can_manage = $account->hasPermission('manage mirador annotations');

  foreach ($settings['mirador']['viewers'] as &$viewer) {
    $viewer['annotation'] = [
      'adapter' => 'drupal',
      'endpoint' => $endpoint,
      'csrfTokenUrl' => Url::fromRoute('system.csrftoken', [], ['absolute' => TRUE])->toString(),
      'user' => $account->isAuthenticated() ? $account->getDisplayName() : 'Anonymous',
      'readonly' => !$can_manage,
      'allowTargetShapesStyling' => TRUE,
      'exportLocalStorageAnnotations' => FALSE,
    ];

    $viewer['annotations'] = [
      'htmlSanitizationRuleSet' => 'liberal',
    ];

    $viewer['window'] = $viewer['window'] ?? [];
    $viewer['window']['defaultSideBarPanel'] = 'annotations';
  }
}