<?php declare(strict_types=1);
namespace MailPoet\Cron\Workers;
if (!defined('ABSPATH')) exit;
use MailPoet\Entities\ScheduledTaskEntity;
use MailPoet\Entities\StatisticsClickEntity;
use MailPoet\Entities\StatisticsOpenEntity;
use MailPoet\Entities\SubscriberEntity;
use MailPoetVendor\Doctrine\ORM\EntityManager;
class SubscribersLastEngagement extends SimpleWorker {
const AUTOMATIC_SCHEDULING = false;
const SUPPORT_MULTIPLE_INSTANCES = false;
const BATCH_SIZE = 2000;
const TASK_TYPE = 'subscribers_last_engagement';
/** @var EntityManager */
private $entityManager;
public function __construct(
EntityManager $entityManager
) {
parent::__construct();
$this->entityManager = $entityManager;
}
public function processTaskStrategy(ScheduledTaskEntity $task, $timer): bool {
$meta = $task->getMeta();
$minId = $meta['nextId'] ?? 1;
$highestId = $this->getHighestSubscriberId();
while ($minId <= $highestId) {
$maxId = $minId + self::BATCH_SIZE;
$this->processBatch($minId, $maxId);
$task->setMeta(['nextId' => $maxId]);
$this->scheduledTasksRepository->persist($task);
$this->scheduledTasksRepository->flush();
$this->cronHelper->enforceExecutionLimit($timer); // Throws exception and interrupts process if over execution limit
$minId = $maxId;
}
return true;
}
private function processBatch(int $minSubscriberId, int $maxSubscriberId): void {
$statisticsClicksTable = $this->entityManager->getClassMetadata(StatisticsClickEntity::class)->getTableName();
$statisticsOpensTable = $this->entityManager->getClassMetadata(StatisticsOpenEntity::class)->getTableName();
$subscribersTable = $this->entityManager->getClassMetadata(SubscriberEntity::class)->getTableName();
$query = "
UPDATE $subscribersTable as mps
LEFT JOIN (SELECT max(created_at) as created_at, subscriber_id FROM $statisticsOpensTable as mpsoinner GROUP BY mpsoinner.subscriber_id) as mpso ON mpso.subscriber_id = mps.id
LEFT JOIN (SELECT max(created_at) as created_at, subscriber_id FROM $statisticsClicksTable as mpscinner GROUP BY mpscinner.subscriber_id) as mpsc ON mpsc.subscriber_id = mps.id
SET mps.last_engagement_at = NULLIF(GREATEST(COALESCE(mpso.created_at, '0'), COALESCE(mpsc.created_at, '0')), '0')
WHERE mps.last_engagement_at IS NULL AND mps.id >= $minSubscriberId AND mps.id < $maxSubscriberId;
";
$this->entityManager->getConnection()->executeStatement($query);
}
private function getHighestSubscriberId(): int {
$subscribersTable = $this->entityManager->getClassMetadata(SubscriberEntity::class)->getTableName();
$result = $this->entityManager->getConnection()->executeQuery("SELECT MAX(id) FROM $subscribersTable LIMIT 1;")->fetchNumeric();
return is_array($result) && isset($result[0]) ? (int)$result[0] : 0;
}
}