complete story 2.3 with qa test

app/Notifications/AccountTypeChangedNotification.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Notifications;
+
+use App\Enums\UserType;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Messages\MailMessage;
+use Illuminate\Notifications\Notification;
+
+class AccountTypeChangedNotification extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    public function __construct(
+        public UserType $newUserType
+    ) {}
+
+    /**
+     * Get the notification's delivery channels.
+     *
+     * @return array<int, string>
+     */
+    public function via(object $notifiable): array
+    {
+        return ['mail'];
+    }
+
+    /**
+     * Get the mail representation of the notification.
+     */
+    public function toMail(object $notifiable): MailMessage
+    {
+        $locale = $notifiable->preferred_language ?? 'ar';
+        $typeName = $this->newUserType === UserType::Company
+            ? __('clients.company', [], $locale)
+            : __('clients.individual', [], $locale);
+
+        return (new MailMessage)
+            ->subject(__('emails.account_type_changed_subject', [], $locale))
+            ->view('emails.account-type-changed', [
+                'user' => $notifiable,
+                'newType' => $typeName,
+                'locale' => $locale,
+            ]);
+    }
+
+    /**
+     * Get the array representation of the notification.
+     *
+     * @return array<string, mixed>
+     */
+    public function toArray(object $notifiable): array
+    {
+        return [
+            'new_user_type' => $this->newUserType->value,
+        ];
+    }
+}