Recalculate engagement score after open

[MAILPOET-3525]

lib/Statistics/StatisticsOpensRepository.php

@@ -0,0 +1,51 @@
+<?php declare(strict_types=1);
+
+namespace MailPoet\Statistics;
+
+use MailPoet\Doctrine\Repository;
+use MailPoet\Entities\ScheduledTaskSubscriberEntity;
+use MailPoet\Entities\StatisticsOpenEntity;
+use MailPoet\Entities\SubscriberEntity;
+use MailPoet\Tasks\Sending;
+
+/**
+ * @extends Repository<StatisticsOpensEntity>
+ */
+class StatisticsOpensRepository extends Repository {
+  protected function getEntityClassName(): string {
+    return StatisticsOpenEntity::class;
+  }
+
+  public function recalculateSubscriberScore(SubscriberEntity $subscriber): void {
+    $subscriber->setEngagementScoreUpdatedAt(new \DateTimeImmutable());
+    $newslettersSentCount = $this
+      ->entityManager
+      ->createQueryBuilder()
+      ->select('count(DISTINCT task.id)')
+      ->from(ScheduledTaskSubscriberEntity::class, 'scheduledTaskSubscriber')
+      ->where('scheduledTaskSubscriber.subscriber = :subscriber')
+      ->setParameter('subscriber', $subscriber)
+      ->join('scheduledTaskSubscriber.task', 'task')
+      ->andWhere('task.type = :sending')
+      ->setParameter('sending', Sending::TASK_TYPE)
+      ->getQuery()
+      ->getSingleScalarResult();
+    if ($newslettersSentCount < 3) {
+      $this->entityManager->flush();
+      return;
+    }
+    $opens = $this
+      ->entityManager
+      ->createQueryBuilder()
+      ->select('count(DISTINCT opens.newsletter)')
+      ->from(StatisticsOpenEntity::class, 'opens')
+      ->where('opens.subscriber = :subscriberId')
+      ->setParameter('subscriberId', $subscriber)
+      ->getQuery()
+      ->getSingleScalarResult();
+    $score = (int)round(($opens / $newslettersSentCount) * 100);
+    $subscriber->setEngagementScore($score);
+    $this->entityManager->flush();
+  }
+
+}