Cron hook in progress

orx_saved_searches.module

<?php

/**
 * Implements hook_cron().
 */
function orx_saved_searches_cron() {
  $query = <<<EOF
SELECT id, view_path FROM {saved_search}
WHERE (last_executed IS NULL OR last_queued < last_executed)
AND last_queued + notification_interval <= :request_time
EOF;

  $result = db_query($query, [':request_time' => REQUEST_TIME])->fetchAllAssoc('id');

  $queue = \Drupal::queue('saved_search_queue');
  foreach ($result as $id => $values) {
    $user = user_load($values['user_id']);
    $data = [
      'id' => $id,
      'name' => $values['name'],
      'view_path' => $values['view_path'],
      'user_email' => $user->getEmail(),
      'user_name' => $user->getDisplayName(),
    ];
    $queue->createItem($data);
  }
}