From f36228b7a6cb8fb9bd2535b9af2146d3bd1228c1 Mon Sep 17 00:00:00 2001
From: Dave Mc Nicoll <dave.mcnicoll@cslsj.qc.ca>
Date: Tue, 30 May 2023 15:40:31 -0400
Subject: [PATCH] - Basic event manager middleware

---
 src/EventDefinition.php | 12 ++++++++++++
 src/EventManager.php    | 16 ++++++++++++----
 src/EventMiddleware.php |  9 +++++++++
 src/EventTrait.php      | 12 ++++++++++++
 4 files changed, 45 insertions(+), 4 deletions(-)
 create mode 100644 src/EventDefinition.php
 create mode 100644 src/EventTrait.php

diff --git a/src/EventDefinition.php b/src/EventDefinition.php
new file mode 100644
index 0000000..eca76b0
--- /dev/null
+++ b/src/EventDefinition.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Mcnd\Event;
+
+use Psr\Container\ContainerInterface;
+
+class EventDefinition
+{
+    public function __construct(
+        public array $list
+    ) {}
+}
\ No newline at end of file
diff --git a/src/EventManager.php b/src/EventManager.php
index 15823c6..a080474 100644
--- a/src/EventManager.php
+++ b/src/EventManager.php
@@ -29,17 +29,25 @@ class EventManager
 
     public function eventFromName(string $name) : array
     {
-        return array_filter($this->eventList, fn($ev) => $ev->name === $name);
+        return array_filter($this->eventList, fn($ev) => property_exists($ev, 'name') && $ev->name === $name);
     }
 
-    public function execute(string $name, ...$arguments) : void
+    public function execute(string $name, &...$arguments) : void
     {
+        $continue = true;
+
         foreach($this->eventFromName($name) as $event) {
-            $event->execute($this->container, ...$arguments);
+            if ($continue) {
+                $event->execute($this->container, ...$arguments);
+                $continue = empty($event->stopPropagation);
+            }
         }
 
         foreach($this->eventfromType($name) as $event) {
-            call_user_func_array([ $event, 'execute'], $arguments);
+            if ($continue) {
+                call_user_func_array([ $event, 'execute'], $arguments);
+                $continue = empty($event->stopPropagation);
+            }
         }
     }
 }
\ No newline at end of file
diff --git a/src/EventMiddleware.php b/src/EventMiddleware.php
index d4c9e0f..7169271 100644
--- a/src/EventMiddleware.php
+++ b/src/EventMiddleware.php
@@ -34,4 +34,13 @@ class EventMiddleware implements MiddlewareInterface
 
         return $this;
     }
+
+    public function fromDefinition(EventDefinition $definition) : self
+    {
+        foreach($definition->list as $event) {
+            $this->eventManager->eventRegister($event);
+        }
+
+        return $this;
+    }
 }
diff --git a/src/EventTrait.php b/src/EventTrait.php
new file mode 100644
index 0000000..69dff69
--- /dev/null
+++ b/src/EventTrait.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Mcnd\Event;
+
+trait EventTrait
+{
+    public function __construct(
+        protected bool $stopPropagation = false,
+    ) {
+
+    }
+}
\ No newline at end of file