jsonapi_search_api-8.x-1.x-dev/modules/jsonapi_search_api_facets/jsonapi_search_api_facets.module

<?php

/**
 * @file
 * Contains jsonapi_search_api_facets.module.
 */

use Drupal\Core\Form\FormStateInterface;
use Drupal\facets\FacetInterface;
use Drupal\facets\FacetSourceInterface;
use Drupal\jsonapi\Query\Filter;

/**
 * Implements hook_form_FORM_ID_alter().
 */
function jsonapi_search_api_facets_form_facet_source_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $form['filter_key']['#disabled'] = TRUE;
  $form['breadcrumb']['#access'] = FALSE;
  foreach ($form['url_processor']['#options'] as $plugin_id => $plugin_name) {
    if ($plugin_id !== 'json_api') {
      unset($form['url_processor']['#options'][$plugin_id]);
    }
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 */
function jsonapi_search_api_facets_form_facets_facet_edit_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  $entity = $form_state->getFormObject()->getEntity();
  $facet_source = $entity->getFacetSourceId();
  if (strpos($facet_source, 'jsonapi_search_api_facets') === 0) {
    foreach ($form['widget']['#options'] as $plugin_id => $plugin_name) {
      if (strpos($plugin_id, 'jsonapi_') !== 0) {
        unset($form['widget']['#options'][$plugin_id]);
      }
    }
    // Empty behaviors have no effect over JSON:API.
    $form['facet_settings']['empty_behavior']['#access'] = FALSE;
    $form['facet_settings']['empty_behavior_container']['#access'] = FALSE;
  }
  else {
    foreach ($form['widget']['#options'] as $plugin_id => $plugin_name) {
      if (strpos($plugin_id, 'jsonapi_') === 0) {
        unset($form['widget']['#options'][$plugin_id]);
      }
    }
  }
}

/**
 * Implements hook_ENTITY_TYPE_presave().
 *
 * @todo use hook_ENTITY_TYPE_create() after https://www.drupal.org/project/facets/issues/3171382
 */
function jsonapi_search_api_facets_facet_source_presave(FacetSourceInterface $entity) {
  if (strpos($entity->getName(), 'jsonapi_search_api_facets:') === 0) {
    $entity->setFilterKey(Filter::KEY_NAME);
    $entity->setUrlProcessor('json_api');
  }
}

/**
 * Implements hook_ENTITY_TYPE_presave().
 */
function jsonapi_search_api_facets_facets_facet_presave(FacetInterface $entity) {
  if (strpos($entity->getFacetSourceId(), 'jsonapi_search_api_facets') === 0) {
    if (empty($entity->getWidget())) {
      $entity->setWidget('jsonapi_search_api');
    }
  }
}