Rename and re-organise custom modules

- Rename `opd_talks` to `opdavies_talks`
- Rename `custom` to `opdavies_blog`

web/modules/custom/opdavies_talks/src/EventSubscriber/UpdateTalkNodeBeforeSave.php

@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Drupal\opdavies_talks\EventSubscriber;
+
+use Carbon\Carbon;
+use Drupal\hook_event_dispatcher\Event\Entity\BaseEntityEvent;
+use Drupal\hook_event_dispatcher\HookEventDispatcherInterface;
+use Drupal\opdavies_talks\Entity\Node\Talk;
+use Drupal\paragraphs\ParagraphInterface;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+/**
+ * Update a talk node before it's saved.
+ */
+final class UpdateTalkNodeBeforeSave implements EventSubscriberInterface {
+
+  public static function getSubscribedEvents() {
+    return [
+      HookEventDispatcherInterface::ENTITY_PRE_SAVE => 'onEntityPreSave',
+    ];
+  }
+
+  public function onEntityPreSave(BaseEntityEvent $event): void {
+    if ($event->getEntity()->getEntityTypeId() != 'node') {
+      return;
+    }
+
+    if ($event->getEntity()->bundle() != 'talk') {
+      return;
+    }
+
+    /** @var \Drupal\opdavies_blog\Entity\Node\Talk $talk */
+    $talk = $event->getEntity();
+    $this->reorderEvents($talk);
+    $this->updateCreatedDate($talk);
+  }
+
+  private function reorderEvents(Talk $talk): void {
+    $events = $talk->getEvents();
+
+    $eventsByDate = $events
+      ->sortBy(fn(ParagraphInterface $event) => $event->get('field_date')
+        ->getString())
+      ->values();
+
+    // If the original event IDs don't match the sorted event IDs, update the
+    // event field to use the sorted ones.
+    if ($events->map->id() != $eventsByDate->map->id()) {
+      $talk->set('field_events', $eventsByDate->toArray());
+    }
+  }
+
+  private function updateCreatedDate(Talk $talk): void {
+    if (!$eventDate = $talk->findLatestEventDate()) {
+      return;
+    }
+
+    $talkDate = Carbon::parse($eventDate)->getTimestamp();
+
+    if ($talkDate == $talk->get('created')->getString()) {
+      return;
+    }
+
+    $talk->set('created', $talkDate);
+  }
+
+}