Add cron job for generating/re-generating template thumbnail files

[MAILPOET-2686]

lib/Cron/Daemon.php

@@ -86,5 +86,6 @@ class Daemon {
     if ($this->featureSwitch->isSupported(FeaturesController::RE_ENGAGEMENT_EMAIL)) {
       yield $this->workersFactory->createReEngagementEmailsSchedulerWorker();
     }
+    yield $this->workersFactory->createNewsletterTemplateThumbnailsWorker();
   }
 }

lib/Cron/Triggers/WordPress.php

@@ -9,6 +9,7 @@ use MailPoet\Cron\Workers\Bounce as BounceWorker;
 use MailPoet\Cron\Workers\InactiveSubscribers;
 use MailPoet\Cron\Workers\KeyCheck\PremiumKeyCheck as PremiumKeyCheckWorker;
 use MailPoet\Cron\Workers\KeyCheck\SendingServiceKeyCheck as SendingServiceKeyCheckWorker;
+use MailPoet\Cron\Workers\NewsletterTemplateThumbnails;
 use MailPoet\Cron\Workers\ReEngagementEmailsScheduler;
 use MailPoet\Cron\Workers\Scheduler as SchedulerWorker;
 use MailPoet\Cron\Workers\SendingQueue\Migration as MigrationWorker;
@@ -250,6 +251,13 @@ class WordPress {
       'status' => ['null', ScheduledTask::STATUS_SCHEDULED],
     ]);
 
+    // newsletter template thumbnails
+    $newsletterTemplateThumbnailsTasks = $this->getTasksCount([
+      'type' => NewsletterTemplateThumbnails::TASK_TYPE,
+      'scheduled_in' => [self::SCHEDULED_IN_THE_PAST],
+      'status' => ['null', ScheduledTask::STATUS_SCHEDULED],
+    ]);
+
     // check requirements for each worker
     $sendingQueueActive = (($scheduledQueues || $runningQueues) && !$sendingLimitReached && !$sendingIsPaused);
     $bounceSyncActive = ($mpSendingEnabled && ($bounceDueTasks || !$bounceFutureTasks));
@@ -279,6 +287,7 @@ class WordPress {
       || $subscribersCountCacheRecalculationTasks
       || $subscribersLastEngagementTasks
       || $subscribersReEngagementSchedulingTasks
+      || $newsletterTemplateThumbnailsTasks
     );
   }
 

lib/Cron/Workers/NewsletterTemplateThumbnails.php

@@ -0,0 +1,29 @@
+<?php declare(strict_types = 1);
+
+namespace MailPoet\Cron\Workers;
+
+use MailPoet\Entities\ScheduledTaskEntity;
+use MailPoet\NewsletterTemplates\ThumbnailSaver;
+use MailPoet\WP\Functions as WPFunctions;
+
+class NewsletterTemplateThumbnails extends SimpleWorker {
+  const TASK_TYPE = 'newsletter_templates_thumbnails';
+  const AUTOMATIC_SCHEDULING = false;
+  const SUPPORT_MULTIPLE_INSTANCES = false;
+
+  /** @var ThumbnailSaver */
+  private $thumbnailSaver;
+
+  public function __construct(
+    ThumbnailSaver $thumbnailSaver,
+    WPFunctions $wp
+  ) {
+    parent::__construct($wp);
+    $this->thumbnailSaver = $thumbnailSaver;
+  }
+
+  public function processTaskStrategy(ScheduledTaskEntity $task, $timer) {
+    $this->thumbnailSaver->ensureTemplateThumbnailsForAll();
+    return true;
+  }
+}

lib/Cron/Workers/WorkersFactory.php

@@ -127,4 +127,9 @@ class WorkersFactory {
   public function createSubscribersStatsReportWorker() {
     return $this->container->get(SubscribersStatsReport::class);
   }
+
+  /** @return NewsletterTemplateThumbnails */
+  public function createNewsletterTemplateThumbnailsWorker() {
+    return $this->container->get(NewsletterTemplateThumbnails::class);
+  }
 }

lib/DI/ContainerConfigurator.php

@@ -174,6 +174,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     $container->autowire(\MailPoet\Cron\Workers\SubscribersLastEngagement::class)->setPublic(true);
     $container->autowire(\MailPoet\Cron\Workers\SubscribersCountCacheRecalculation::class)->setPublic(true);
     $container->autowire(\MailPoet\Cron\Workers\SubscribersStatsReport::class)->setPublic(true);
+    $container->autowire(\MailPoet\Cron\Workers\NewsletterTemplateThumbnails::class)->setPublic(true);
     // Custom field
     $container->autowire(\MailPoet\CustomFields\ApiDataSanitizer::class);
     $container->autowire(\MailPoet\CustomFields\CustomFieldsRepository::class)->setPublic(true);

lib/NewsletterTemplates/ThumbnailSaver.php

@@ -32,6 +32,13 @@ class ThumbnailSaver {
     $this->baseUrl = Env::$tempUrl;
   }
 
+  public function ensureTemplateThumbnailsForAll() {
+    $templates = $this->repository->findBy(['readonly' => false]);
+    foreach ($templates as $template) {
+      $this->ensureTemplateThumbnailFile($template);
+    }
+  }
+
   public function ensureTemplateThumbnailFile(NewsletterTemplateEntity $template): NewsletterTemplateEntity {
     if ($template->getReadonly()) {
       return $template;

tests/integration/Cron/DaemonHttpRunnerTest.php

@@ -306,6 +306,8 @@ class DaemonHttpRunnerTest extends \MailPoetTest {
       'createSubscribersEngagementScoreWorker' => $worker,
       'createSubscribersLastEngagementWorker' => $worker,
       'createSubscribersCountCacheRecalculationWorker' => $worker,
+      'createReEngagementEmailsSchedulerWorker' => $worker,
+      'createNewsletterTemplateThumbnailsWorker' => $worker,
     ]);
   }
 }

tests/integration/Cron/DaemonTest.php

@@ -62,6 +62,8 @@ class DaemonTest extends \MailPoetTest {
       'createSubscribersEngagementScoreWorker' => $this->createSimpleWorkerMock(),
       'createSubscribersLastEngagementWorker' => $this->createSimpleWorkerMock(),
       'createSubscribersCountCacheRecalculationWorker' => $this->createSimpleWorkerMock(),
+      'createReEngagementEmailsSchedulerWorker' => $this->createSimpleWorkerMock(),
+      'createNewsletterTemplateThumbnailsWorker' => $this->createSimpleWorkerMock(),
     ]);
   }