Count past presentations

modules/opd_presentations/src/Events.php

@@ -9,7 +9,11 @@ use Webmozart\Assert\Assert;
 /**
  * @implements \IteratorAggregate<Event>
  */
-readonly final class Events implements \IteratorAggregate {
+readonly final class Events implements \Countable, \IteratorAggregate {
+
+  public function count(): int {
+    return count($this->events);
+  }
 
   public function filter(\Closure $callback): self {
     return new self(array_filter(

modules/opd_presentations/src/Presentation.php

@@ -11,9 +11,8 @@ final class Presentation extends Node implements NodeInterface {
 
   public const NODE_TYPE = 'presentation';
 
-  public function getPastEvents(): Events {
-    return Events::fromEvents($this->get('field_events')->referencedEntities())
-      ->getPast();
+  public function getEvents(): Events {
+    return Events::fromEvents($this->get('field_events')->referencedEntities());
   }
 
 }

modules/opd_presentations/src/PresentationCounter.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opd_presentations;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\node\NodeInterface;
+
+final class PresentationCounter {
+
+  private array $presentations;
+
+  public function __construct(private EntityTypeManagerInterface $entityTypeManager) {
+  }
+
+  public function getPastCount(): int {
+    $nodeStorage = $this->entityTypeManager->getStorage('node');
+
+    $query = $nodeStorage->getQuery();
+    $query->condition('status', NodeInterface::PUBLISHED);
+    $query->condition('type', Presentation::NODE_TYPE);
+    $query->accessCheck();
+
+    $nodeIds = $query->execute();
+
+    $presentations = $nodeStorage->loadMultiple($nodeIds);
+
+    return array_reduce(
+      array: $presentations,
+      callback: fn (int $count, Presentation $presentation)
+        => $count + $presentation->getEvents()->getPast()->count(),
+      initial: 0,
+    );
+  }
+
+}