From 4d73913bef7fac149bb5363d77b52d9201defcf8 Mon Sep 17 00:00:00 2001
From: Dave Mc Nicoll <info@mcnd.ca>
Date: Wed, 29 Mar 2023 15:18:13 +0000
Subject: [PATCH] - First commit

---
 LICENSE                 | 21 +++++++++++++++++++
 composer.json           | 18 +++++++++++++++++
 src/Event.php           | 20 ++++++++++++++++++
 src/EventManager.php    | 45 +++++++++++++++++++++++++++++++++++++++++
 src/EventMiddleware.php | 37 +++++++++++++++++++++++++++++++++
 5 files changed, 141 insertions(+)
 create mode 100644 LICENSE
 create mode 100644 composer.json
 create mode 100644 src/Event.php
 create mode 100644 src/EventManager.php
 create mode 100644 src/EventMiddleware.php

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..e54356f
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2023 Dave Mc Nicoll
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..c1d532f
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,18 @@
+{
+    "name": "mcnd/event",
+    "description": "An event library which interface with PHP 8 native attributes.",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Dave Mc Nicoll",
+            "email": "info@mcnd.ca"
+        }
+    ],
+    "require": {},
+    "autoload": {
+        "psr-4": {
+            "Mcnd\\Event\\": "src/"
+        }
+    }
+}
diff --git a/src/Event.php b/src/Event.php
new file mode 100644
index 0000000..3a84031
--- /dev/null
+++ b/src/Event.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace Mcnd\Event;
+
+use Psr\Container\ContainerInterface;
+
+class Event
+{
+    public function __construct(
+        public string $name,
+        public string $class,
+        public string $method,
+        public \Notes\Attribute $attribute,
+    ) {}
+
+    public function execute(ContainerInterface $container, ... $arguments) : mixed
+    {
+        return $container->make($this->class)->{$this->method}(... $arguments);
+    }
+}
\ No newline at end of file
diff --git a/src/EventManager.php b/src/EventManager.php
new file mode 100644
index 0000000..15823c6
--- /dev/null
+++ b/src/EventManager.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace Mcnd\Event;
+
+use Psr\Container\ContainerInterface;
+
+class EventManager
+{
+    public array $eventList = [];
+
+    public function __construct(
+        public ContainerInterface $container,
+    ) {}
+
+    public function eventRegister(object $event) : void
+    {
+        $this->eventList[] = $event;
+    }
+
+    public function eventFromType(string $type) : array
+    {
+        return array_filter($this->eventList, fn($ev) => $ev instanceof $type);
+    }
+
+    public function pushEvent(Event $event) : void
+    {
+        $this->eventList[] = $event;
+    }
+
+    public function eventFromName(string $name) : array
+    {
+        return array_filter($this->eventList, fn($ev) => $ev->name === $name);
+    }
+
+    public function execute(string $name, ...$arguments) : void
+    {
+        foreach($this->eventFromName($name) as $event) {
+            $event->execute($this->container, ...$arguments);
+        }
+
+        foreach($this->eventfromType($name) as $event) {
+            call_user_func_array([ $event, 'execute'], $arguments);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/EventMiddleware.php b/src/EventMiddleware.php
new file mode 100644
index 0000000..d4c9e0f
--- /dev/null
+++ b/src/EventMiddleware.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace Mcnd\Event;
+
+use Notes\Event\EventFetcher;
+use Psr\Http\Message\ResponseFactoryInterface,
+    Psr\Container\ContainerInterface,
+    Psr\Http\Message\ResponseInterface,
+    Psr\Http\Message\ServerRequestInterface,
+    Psr\Http\Server\MiddlewareInterface,
+    Psr\Http\Server\RequestHandlerInterface;
+
+class EventMiddleware implements MiddlewareInterface
+{
+    public ContainerInterface $container;
+
+    public EventManager $eventManager;
+
+    public function __construct(ContainerInterface $container, EventManager $eventManager) {
+        $this->container = $container;
+        $this->eventManager = $eventManager;
+    }
+
+    public function process(ServerRequestInterface $request, RequestHandlerInterface $handler) : ResponseInterface
+    {
+        return $handler->handle($request);
+    }
+
+    public function fromAttributes(EventFetcher $fetcher) : self
+    {
+        foreach($fetcher->compile() as $event) {
+            $this->eventManager->pushEvent($event);
+        }
+
+        return $this;
+    }
+}