upei_roblib_search/modules/solr_site/src/Controller/RoblibSearchSolrsiteController.php

<?php

namespace Drupal\roblib_search_solr_site\Controller;

use Drupal\Core\Controller\ControllerBase;

/**
 * Controller for d3 graphs.
 */
class RoblibSearchSolrsiteController extends ControllerBase {

  /**
   * Print JSON.
   *
   */
  public function bestbetResults($query = NULL) {
    print $this->getResults($query, 'BestBet');
    exit();
  }

  /**
   * Print JSON.
   *
   */
  public function generalResults($query = NULL) {
    print $this->getResults($query, 'General');
    exit();
  }

  /**
   * Query Solr for site results.
   * @param string $queryString
   *   The search term(s) to send to Solr.
   * @param string type
   *   The type of search, either BestBet or General.
   * @return string
   *   A JSON string
   */
  function getResults($queryString = NULL, $solr_type = 'General') {
    global $base_url;
    $config = \Drupal::config('roblib_search_solr_site.settings');
    // Url parameters.
    if (!isset($queryString)) {
      if (isset($_GET['roblib_query'])) {
        $queryString = $_GET['roblib_query'];
      }
      else {
        return '';
      }
    }
    $queryString = urlencode($queryString);
    // TODO make the index configurable.
    $index = \Drupal\search_api\Entity\Index::load('library');
    $query = $index->query();

// Change the parse mode for the search.
    $parse_mode = \Drupal::service('plugin.manager.search_api.parse_mode')
      ->createInstance('direct');
    $parse_mode->setConjunction('OR');
    $query->setParseMode($parse_mode);

    // Restrict the search to specific languages.
    //$query->setLanguages(['en']);

    
    $query->keys($queryString);
    if ($solr_type == 'BestBet') {
      $query->addCondition('type', 'bestbet', '=');
    } else {
      $query->addCondition('type', 'bestbet', '<>');
    }

    // $query->setFulltextFields(['rendered_item', 'title', 'body']);
    $query->range(0, 5);
    $query->sort('search_api_relevance', 'DESC');


    $results = $query->execute();
    $output = [];
    $output['resultCount'] = $results->getResultCount();
    $output['results'] = [];
    foreach ($results as $result) {
      $id = $result->getId();
      $title = $result->getField('title');
      if(empty($title)){
        break;
      }
      $titles = $title->getValues();
      $output['results'][$id]['title'] = reset($titles);
      $body = $result->getField('body')->getValues();
      if (!empty($body)) {
        $bodyOutput = strip_tags($body[0]->getText());
        if (strlen($bodyOutput) > 500) {
          $bodyOutput = substr($bodyOutput, 0, 500) . '...';
        }
      }
      $output['results'][$id]['body'] = empty($bodyOutput) ? '' : $bodyOutput;
      //$rendered_items = $result->getField('rendered_item')->getValues();
      // $output['rendered_item'] = $rendered_items[0]->getText();
      $summarys = $result->getField('summary')->getValues();
      $output['results'][$id]['summary'] = empty($summmarys) ? '' : reset($summarys);
      $type = $result->getField('type')->getValues();
      $output['results'][$id]['type'] = reset($type);
      $urls = $result->getField('url')->getValues();
      $output['results'][$id]['url'] = reset($urls);
      $links = $result->getField('field_link')->getValues();
      $output['results'][$id]['field_link'] = empty($links) ? '' : $links;
    }

    echo json_encode($output);
    exit();
  }

}