move code to repository root

src/Infrastructure/Event/Dispatcher.php

@@ -0,0 +1,60 @@
+<?php declare(strict_types=1);
+
+namespace Lubian\AttributeMagic\Infrastructure\Event;
+
+use Invoker\InvokerInterface;
+
+use function Lubian\AttributeMagic\Infrastructure\arrayFilter;
+use function usort;
+
+final class Dispatcher
+{
+    /**
+     * @param Listener[] $listeners
+     */
+    public function __construct(
+        private readonly InvokerInterface $invoker,
+        private array $listeners = [],
+    ) {
+    }
+
+    public function addListener(Listener $listener): void
+    {
+        $this->listeners[] = $listener;
+    }
+
+    /**
+     * @return Listener[]
+     */
+    public function getListenerForEvent(GenericEvent $event): array
+    {
+        return arrayFilter(
+            $this->listeners,
+            static fn (Listener $l): bool => $l->eventClass === $event::class,
+        );
+    }
+
+    /**
+     * @return Listener[]
+     */
+    public function getSortedListenerForEvent(GenericEvent $event): array
+    {
+        $filtered = $this->getListenerForEvent($event);
+        usort($filtered, static fn (Listener $a, Listener $b): int => $a->priority <=> $b->priority);
+        return $filtered;
+    }
+
+    public function dispatch(GenericEvent $event): void
+    {
+        foreach ($this->getSortedListenerForEvent($event) as $listener) {
+            if ($event->stopped === true) {
+                return;
+            }
+
+            $this->invoker->call(
+                [$listener->listenerClass, $listener->listenerMethod],
+                [$event],
+            );
+        }
+    }
+}