Add TalkCollection, move logic for getting events

Add a `TalkCollection` which extends Laravel/Tighten's, and add a method
there for getting the events from the talks. This makes this logic more
reusable and also makes the code in the `TalkCounter` service simpler.

web/modules/custom/talks/src/Collection/TalkCollection.php

@@ -0,0 +1,22 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opdavies_talks\Collection;
+
+use Drupal\opdavies_talks\Entity\Node\Talk;
+use Drupal\paragraphs\ParagraphInterface;
+use Tightenco\Collect\Support\Collection;
+
+final class TalkCollection extends Collection {
+
+  /**
+   * Return the events for the talks in the Collection.
+   *
+   * @return Collection|ParagraphInterface[]
+   */
+  public function getEvents(): Collection {
+    return $this->flatMap(fn(Talk $talk): Collection => $talk->getEvents());
+  }
+
+}

web/modules/custom/talks/src/Repository/TalkRepository.php

@@ -7,8 +7,7 @@ namespace Drupal\opdavies_talks\Repository;
 use Drupal\Core\Entity\EntityStorageInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
 use Drupal\node\NodeInterface;
-use Drupal\opdavies_talks\Entity\Node\Talk;
+use Drupal\opdavies_talks\Collection\TalkCollection;
-use Tightenco\Collect\Support\Collection;
 
 final class TalkRepository {
 
@@ -18,19 +17,13 @@ final class TalkRepository {
     $this->nodeStorage = $entityTypeManager->getStorage('node');
   }
 
-  /**
+  public function findAll(): TalkCollection {
-   * @return Collection|Talk[]
-   */
-  public function findAll(): Collection {
     $talks = $this->nodeStorage->loadByProperties($this->defaultProperties());
 
-    return new Collection($talks);
+    return new TalkCollection($talks);
   }
 
-  /**
+  public function findAllPublished(): TalkCollection {
-   * @return Collection|Talk[]
-   */
-  public function findAllPublished(): Collection {
     $talks = $this->nodeStorage->loadByProperties(array_merge(
       $this->defaultProperties(),
       [
@@ -38,7 +31,7 @@ final class TalkRepository {
       ],
     ));
 
-    return new Collection($talks);
+    return new TalkCollection($talks);
   }
 
   private function defaultProperties(): array {

web/modules/custom/talks/src/Service/TalkCounter.php

@@ -5,7 +5,6 @@ declare(strict_types=1);
 namespace Drupal\opdavies_talks\Service;
 
 use Carbon\Carbon;
-use Drupal\opdavies_talks\Entity\Node\Talk;
 use Drupal\opdavies_talks\Repository\TalkRepository;
 use Drupal\paragraphs\ParagraphInterface;
 
@@ -22,8 +21,9 @@ final class TalkCounter {
 
     return $this->talkRepository
       ->findAllPublished()
-      ->flatMap(fn(Talk $talk) => $talk->getEvents())
+      ->getEvents()
-      ->filter(fn(ParagraphInterface $event) => $event->get('field_date')->getString() <= $today)
+      ->filter(fn(ParagraphInterface $event) => $event->get('field_date')
+        ->getString() <= $today)
       ->count();
   }