Remove phpstan errors from the rest of the code

[MAILPOET-3235]

lib/AutomaticEmails/WooCommerce/Events/PurchasedProduct.php

@@ -91,6 +91,7 @@ class PurchasedProduct {
     }
 
     $woocommerceProducts = array_map(function($product) {
+      assert($product instanceof \WP_Post);
       return [
         'id' => $product->ID,
         'name' => $product->post_title, // phpcs:ignore Squiz.NamingConventions.ValidVariableName.NotCamelCaps

lib/Config/MP2Migrator.php

@@ -968,6 +968,7 @@ class MP2Migrator {
       $segmentsIds = implode(',', $segments);
       return '[mailpoet_subscribers_count segments=' . $segmentsIds . ']';
     }
+    return '';
   }
 
   /**

lib/Cron/DaemonHttpRunner.php

@@ -12,7 +12,7 @@ class DaemonHttpRunner {
   public $timer;
   public $token;
 
-  /** @var Daemon */
+  /** @var Daemon|null */
   private $daemon;
 
   /** @var CronHelper */
@@ -69,6 +69,9 @@ class DaemonHttpRunner {
     if (!empty($error)) {
       return $this->abortWithError($error);
     }
+    if ($this->daemon === null) {
+      return $this->abortWithError(WPFunctions::get()->__('Daemon does not set correctly.', 'mailpoet'));
+    }
     $this->settingsDaemonData['token'] = $this->token;
     $this->daemon->run($this->settingsDaemonData);
     // If we're using the WordPress trigger, check the conditions to stop cron if necessary

lib/Cron/Workers/SendingQueue/SendingQueue.php

@@ -8,6 +8,7 @@ use MailPoet\Cron\Workers\SendingQueue\Tasks\Links;
 use MailPoet\Cron\Workers\SendingQueue\Tasks\Mailer as MailerTask;
 use MailPoet\Cron\Workers\SendingQueue\Tasks\Newsletter as NewsletterTask;
 use MailPoet\Cron\Workers\StatsNotifications\Scheduler as StatsNotificationsScheduler;
+use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Logging\LoggerFactory;
 use MailPoet\Mailer\MailerError;
 use MailPoet\Mailer\MailerLog;
@@ -167,7 +168,9 @@ class SendingQueue {
             ['newsletter_id' => $newsletter->id, 'task_id' => $queue->taskId]
           );
           $this->newsletterTask->markNewsletterAsSent($newsletter, $queue);
-          $this->statsNotificationsScheduler->schedule($this->newslettersRepository->findOneById($newsletter->id));
+          $newsletter = $this->newslettersRepository->findOneById($newsletter->id);
+          assert($newsletter instanceof NewsletterEntity);
+          $this->statsNotificationsScheduler->schedule($newsletter);
         }
         $this->enforceSendingAndExecutionLimits($timer);
       }

lib/Cron/Workers/StatsNotifications/Worker.php

@@ -7,6 +7,7 @@ use MailPoet\Cron\CronHelper;
 use MailPoet\Entities\NewsletterEntity;
 use MailPoet\Entities\NewsletterLinkEntity;
 use MailPoet\Entities\ScheduledTaskEntity;
+use MailPoet\Entities\SendingQueueEntity;
 use MailPoet\Entities\StatsNotificationEntity;
 use MailPoet\Mailer\Mailer;
 use MailPoet\Mailer\MetaInfo;
@@ -117,8 +118,12 @@ class Worker {
       throw new \RuntimeException('Missing newsletter entity for statistic notification.');
     }
     $link = $this->newsletterLinkRepository->findTopLinkForNewsletter((int)$newsletter->getId());
-    $context = $this->prepareContext($newsletter, $link);
-    $subject = $newsletter->getLatestQueue()->getNewsletterRenderedSubject();
+    $sendingQueue = $newsletter->getLatestQueue();
+    if (!$sendingQueue instanceof SendingQueueEntity) {
+      throw new \RuntimeException('Missing sending queue entity for statistic notification.');
+    }
+    $context = $this->prepareContext($newsletter, $sendingQueue, $link);
+    $subject = $sendingQueue->getNewsletterRenderedSubject();
     return [
       'subject' => sprintf(_x('Stats for email %s', 'title of an automatic email containing statistics (newsletter open rate, click rate, etc)', 'mailpoet'), $subject),
       'body' => [
@@ -128,12 +133,12 @@ class Worker {
     ];
   }
 
-  private function prepareContext(NewsletterEntity $newsletter, NewsletterLinkEntity $link = null) {
+  private function prepareContext(NewsletterEntity $newsletter, SendingQueueEntity $sendingQueue, NewsletterLinkEntity $link = null) {
     $statistics = $this->newsletterStatisticsRepository->getStatistics($newsletter);
     $clicked = ($statistics->getClickCount() * 100) / $statistics->getTotalSentCount();
     $opened = ($statistics->getOpenCount() * 100) / $statistics->getTotalSentCount();
     $unsubscribed = ($statistics->getUnsubscribeCount() * 100) / $statistics->getTotalSentCount();
-    $subject = $newsletter->getLatestQueue()->getNewsletterRenderedSubject();
+    $subject = $sendingQueue->getNewsletterRenderedSubject();
     $subscribersCount = $this->subscribersRepository->getTotalSubscribers();
     $hasValidApiKey = $this->subscribersFeature->hasValidApiKey();
     $context = [

lib/DI/ContainerConfigurator.php

@@ -373,6 +373,9 @@ class ContainerConfigurator implements IContainerConfigurator {
   }
 
   public static function getPremiumService($id, ContainerInterface $container = null) {
+    if ($container === null) {
+      return null;
+    }
     if (!$container->has(IContainerConfigurator::PREMIUM_CONTAINER_SERVICE_SLUG)) {
       return null;
     }

lib/Doctrine/TablePrefixMetadataFactory.php

@@ -32,7 +32,7 @@ class TablePrefixMetadataFactory extends ClassMetadataFactory {
 
     // prefix tables only after they are saved to cache so the prefix does not get included in cache
     // (getMetadataFor can call itself recursively but it saves to cache only after the recursive calls)
-    $isCached = $this->getCacheDriver()->contains($classMetadata->getName() . $this->cacheSalt);
+    $isCached = ($cache = $this->getCacheDriver()) ? $cache->contains($classMetadata->getName() . $this->cacheSalt) : false;
     if ($classMetadata instanceof ClassMetadata && $isCached) {
       $this->addPrefix($classMetadata);
       $this->prefixedMap[$classMetadata->getName()] = true;

lib/Newsletter/Links/Links.php

@@ -73,12 +73,12 @@ class Links {
       $linkToReplace = $processedLink['link'];
       $replacementLink = $processedLink['processed_link'];
       if ($processedLink['type'] == self::LINK_TYPE_SHORTCODE) {
-        $content = str_replace($linkToReplace, $replacementLink, $content);
+        $content = str_replace($linkToReplace, $replacementLink, (string)$content);
       }
       $content = preg_replace(
         '/\[(.*?)\](\(' . preg_quote($linkToReplace, '/') . '\))/',
         '[$1](' . $replacementLink . ')',
-        $content
+        (string)$content
       );
     }
     return [

lib/Util/DOM.php

@@ -12,6 +12,7 @@ class DOM {
    */
   public static function splitOn(DomNode $bound, DomNode $cutElement) {
     $ignoreTextAndCommentNodes = false;
+    $grandparent = $cutElement->parent;
     for ($parent = $cutElement->parent; $bound != $parent; $parent = $grandparent) {
       // Clone parent node without children, but with attributes
       $parent->after($parent->toString());
@@ -23,6 +24,7 @@ class DOM {
       }
 
       // Reattach cut_element and right siblings to grandparent
+      /* @phpstan-ignore-next-line Because there is a wrong annotation in the library tburry/pquery */
       $grandparent = $parent->parent;
       $indexAfterParent = $parent->index() + 1;
       $right->move($grandparent, $indexAfterParent);