<?php

/**
 * @file
 * Contains core_search_facets.module
 */

use Drupal\Core\Database\Query\AlterableInterface;

/**
 * Implements hook_query_TAG_alter(): tag search_$type with $type node_search.
 *
 * @param \Drupal\Core\Database\Query\AlterableInterface $query
 */
function core_search_facets_query_search_node_search_alter(AlterableInterface $query) {
  // Obtain the Facet Source id for the current search.
  $request = \Drupal::requestStack()->getMasterRequest();
  $search_page = $request->attributes->get('entity');

  /** @var \Drupal\facets\FacetManager\DefaultFacetManager $facet_manager */
  $facet_manager = \Drupal::service('facets.manager');
  $search_id = 'core_node_search:' . $search_page->id();

  // Add the active filters.
  $facet_manager->setFacetSourceId($search_id);
  $facet_manager->alterQuery($query);

}

/**
 * Implements hook_search_plugin_alter(). Alter search plugin definitions.
 *
 * @param array $definitions
 *   The array of search plugin definitions, keyed by plugin ID.
 *
 * @see \Drupal\search\Annotation\SearchPlugin
 * @see \Drupal\search\SearchPluginManager
 */
function core_search_facets_search_plugin_alter(array &$definitions) {
  // Replace the Search Plugin class to alter the search form on a different
  // way because we don't need content types or languages as advanced search
  // filters.
  // @TODO wait until we can add configuration to a facet source.
  if (isset($definitions['node_search'])) {
    //$definitions['node_search']['class'] = 'Drupal\core_search_facets\Plugin\Search\NodeSearchFacets';
  }
}

/**
 * Implements hook_facets_core_allowed_field_types().
 */
function core_search_facets_facets_core_allowed_field_types(array $allowed_field_types) {
  $allowed_field_types[] = 'taxonomy_term';
  $allowed_field_types[] = 'integer';

  return $allowed_field_types;
}