Create cron worker for calculating scrore

[MAILPOET-3525]

lib/Cron/Workers/SubscribersEngagementScore.php

@@ -0,0 +1,38 @@
+<?php declare(strict_types=1);
+
+namespace MailPoet\Cron\Workers;
+
+use MailPoet\Models\ScheduledTask;
+use MailPoet\Statistics\StatisticsOpensRepository;
+use MailPoet\Subscribers\SubscribersRepository;
+use MailPoet\WP\Functions as WPFunctions;
+use MailPoetVendor\Carbon\Carbon;
+
+class SubscribersEngagementScore extends SimpleWorker {
+  const AUTOMATIC_SCHEDULING = false;
+  const BATCH_SIZE = 60;
+  const TASK_TYPE = 'subscribers_engagement_score';
+
+  /** @var StatisticsOpensRepository */
+  private $statisticsOpensRepository;
+
+  /** @var SubscribersRepository */
+  private $subscribersRepository;
+
+  public function __construct(
+    StatisticsOpensRepository $statisticsOpensRepository,
+    SubscribersRepository $subscribersRepository
+  ) {
+    parent::__construct();
+    $this->statisticsOpensRepository = $statisticsOpensRepository;
+    $this->subscribersRepository = $subscribersRepository;
+  }
+
+  public function processTaskStrategy(ScheduledTask $task, $timer) {
+
+  }
+
+  public function getNextRunDate() {
+    return Carbon::createFromTimestamp($this->wp->currentTime('timestamp'));
+  }
+}

lib/Statistics/StatisticsOpensRepository.php

@@ -47,5 +47,4 @@ class StatisticsOpensRepository extends Repository {
     $subscriber->setEngagementScore($score);
     $this->entityManager->flush();
   }
-
 }