Use doctrine in stats notifications for auto emails

[MAILPOET-2439]

lib/Cron/Workers/StatsNotifications/StatsNotificationsRepository.php

@@ -4,6 +4,7 @@ namespace MailPoet\Cron\Workers\StatsNotifications;
 
 use Carbon\Carbon;
 use MailPoet\Doctrine\Repository;
+use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\ScheduledTaskEntity;
 use MailPoet\Entities\StatsNotificationEntity;
 
@@ -56,5 +57,24 @@ class StatsNotificationsRepository extends Repository {
     }
     return $query->getQuery()->getResult();
   }
+
+  /**
+   * @return NewsletterEntity[]
+   */
+  public function getDueAutomatedNewsletters() {
+    return $this->entity_manager
+      ->createQueryBuilder()
+      ->select('n')
+      ->from(NewsletterEntity::class, 'n')
+      ->where('n.status = :status')
+      ->setParameter(':status', NewsletterEntity::STATUS_ACTIVE)
+      ->andWhere('n.deleted_at is null')
+      ->andWhere('n.type IN (:types)')
+      ->setParameter('types', [NewsletterEntity::TYPE_AUTOMATIC, NewsletterEntity::TYPE_WELCOME])
+      ->orderBy('n.subject')
+      ->getQuery()
+      ->getResult();
+  }
+
 }