feat: add logic to sync drafts to server

Signed-off-by: Sebastian <krupinski01@gmail.com>

tests/php/Unit/CompositionSavedEventTest.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+namespace KTXT\Mail\Tests\Unit;
+
+use KTXF\Event\DeliveryMode;
+use KTXF\Event\EventListenerRegistrarInterface;
+use KTXM\Mail\CompositionSavedEvent;
+use KTXM\Mail\CompositionSyncListener;
+use KTXM\Mail\Module;
+use PHPUnit\Framework\TestCase;
+
+final class CompositionSavedEventTest extends TestCase {
+
+    public function testCarriesOnlySynchronizationCoordinates(): void {
+        $event = new CompositionSavedEvent('tenant-1', 'user-1', 'draft-1', 7);
+
+        $this->assertSame(CompositionSavedEvent::class, $event->label());
+        $this->assertSame('tenant-1', $event->tenantIdentifier());
+        $this->assertSame('user-1', $event->userIdentifier());
+        $this->assertSame('draft-1', $event->compositionIdentifier());
+        $this->assertSame(7, $event->revision());
+        $this->assertSame([
+            'userId' => 'user-1',
+            'compositionId' => 'draft-1',
+            'revision' => 7,
+        ], $event->context());
+    }
+
+    public function testModuleRegistersDeferredCompositionSyncListener(): void {
+        $events = $this->createMock(EventListenerRegistrarInterface::class);
+        $events->expects($this->once())
+            ->method('listen')
+            ->with(
+                'mail',
+                CompositionSavedEvent::class,
+                CompositionSyncListener::class,
+                'onCompositionSaved',
+                DeliveryMode::Deferred,
+            );
+
+        (new Module($events))->boot();
+    }
+}