Change /talks to /presentations

modules/Presentations/TwigExtension/PresentationTwigExtension.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Modules\Presentations\TwigExtension;
+
+use Sculpin\Contrib\ProxySourceCollection\ProxySourceItem;
+use Twig\Extension\AbstractExtension;
+use Twig\TwigFunction;
+
+class PresentationTwigExtension extends AbstractExtension
+{
+    public function getFunctions(): array
+    {
+        return [
+            new TwigFunction('get_presentation_count', [$this, 'getPresentationCount']),
+        ];
+    }
+
+    public function getName(): string
+    {
+        return 'modules.presentations';
+    }
+
+    public function getPresentationCount(array $presentations): int
+    {
+        $today = (new \DateTime('today'))->getTimestamp();
+
+        return collect($presentations)
+            ->flatMap(fn (ProxySourceItem $presentation) => $presentation->data()->get('events'))
+            ->filter(
+                function (array $event) use ($today): bool {
+                    assert(array_key_exists(array: $event, key: 'date'));
+
+                    return $event['date'] < $today;
+                }
+            )
+            ->count();
+    }
+}