feat: implement ArticlePublishedEvent and ConsoleOutputListener for article publishing events

Author: aspirantzhang

contexts/ArticlePublishing/Domain/Events/ArticlePublishedEvent.php

@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Contexts\ArticlePublishing\Domain\Events;
+
+use Illuminate\Foundation\Events\Dispatchable;
+use Contexts\ArticlePublishing\Domain\Models\ArticleId;
+
+class ArticlePublishedEvent
+{
+    use Dispatchable;
+
+    public function __construct(
+        private readonly ArticleId $articleId,
+    ) {
+    }
+
+    public function getArticleId(): ArticleId
+    {
+        return $this->articleId;
+    }
+}

contexts/ArticlePublishing/Infrastructure/EventListeners/ConsoleOutputListener.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Contexts\ArticlePublishing\Infrastructure\EventListeners;
+
+use Contexts\ArticlePublishing\Domain\Events\ArticlePublishedEvent;
+
+class ConsoleOutputListener
+{
+    public function handle(ArticlePublishedEvent $event): void
+    {
+        echo "Article published: {$event->getArticleId()->value}\n";
+    }
+}

contexts/ArticlePublishing/Infrastructure/ServiceProvider.php

@@ -4,16 +4,23 @@
 
 namespace Contexts\ArticlePublishing\Infrastructure;
 
+use Contexts\ArticlePublishing\Domain\Events\ArticlePublishedEvent;
 use Illuminate\Foundation\Support\Providers\RouteServiceProvider;
 use Illuminate\Support\Facades\Route;
 use Illuminate\Support\ServiceProvider as BaseServiceProvider;
+use Contexts\ArticlePublishing\Infrastructure\EventListeners\ConsoleOutputListener;
+use Illuminate\Support\Facades\Event;
 
 class ServiceProvider extends BaseServiceProvider
 {
     public function boot(): void
     {
         $this->loadMigrationsFrom(__DIR__.'/Migrations');
         $this->loadJsonTranslationsFrom(__DIR__.'/Lang');
+        Event::listen(
+            ArticlePublishedEvent::class,
+            ConsoleOutputListener::class
+        );
     }
 
     public function register(): void
@@ -31,6 +38,8 @@ public function map(): void
         });
     }
 
+
+
     public function provides(): array
     {
         return [];

contexts/ArticlePublishing/Tests/Feature/ArticlePublishingTest.php

@@ -2,7 +2,10 @@
 
 declare(strict_types=1);
 
-it('can publish aritcle via api', function () {
+use Contexts\ArticlePublishing\Domain\Events\ArticlePublishedEvent;
+use Contexts\ArticlePublishing\Infrastructure\EventListeners\ConsoleOutputListener;
+
+it('can publish aritcle drafts via api', function () {
     $response = $this->postJson('articles', [
         'title' => 'My Article',
         'body' => 'This is my article body',
@@ -11,3 +14,25 @@
 
     $response->assertStatus(201);
 });
+
+it('can publish published articles via api', function () {
+    $response = $this->postJson('articles', [
+        'title' => 'My Article',
+        'body' => 'This is my article body',
+        'status' => 'published',
+    ]);
+
+    $response->assertStatus(201);
+});
+
+it('dispatches an event when an article is published', function () {
+    Event::fake();
+
+    $this->postJson('articles', [
+        'title' => 'My Article',
+        'body' => 'This is my article body',
+        'status' => 'published',
+    ]);
+
+    Event::assertDispatched(ArticlePublishedEvent::class);
+});