feat: send WhatsApp notification on sales order confirmed

app/Http/Controllers/Sales/SalesOrderController.php

@@ -7,6 +7,7 @@ use App\Models\Customer;
 use App\Models\Item;
 use App\Models\SalesOrder;
 use App\Models\SalesOrderItem;
+use App\Notifications\Sales\SalesOrderConfirmedNotification;
 use Illuminate\Http\Request;
 
 class SalesOrderController extends Controller
@@ -101,6 +102,10 @@ class SalesOrderController extends Controller
     {
         $salesOrder->update(['status' => 'confirmed']);
 
+        if ($salesOrder->customer && $salesOrder->customer->whatsapp_number) {
+            $salesOrder->customer->notify(new SalesOrderConfirmedNotification($salesOrder));
+        }
+
         return redirect()->back()->with('success', 'Sales order confirmed.');
     }
 }

app/Notifications/Sales/SalesOrderConfirmedNotification.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Notifications\Sales;
+
+use App\Models\SalesOrder;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Notification;
+use PromoSeven\UltraMessage\UltraMessageChannel;
+use PromoSeven\UltraMessage\UltraMessageMessage;
+
+class SalesOrderConfirmedNotification extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    public function __construct(private SalesOrder $order) {}
+
+    public function via(mixed $notifiable): array
+    {
+        return [UltraMessageChannel::class];
+    }
+
+    public function toUltraMessage(mixed $notifiable): UltraMessageMessage
+    {
+        return UltraMessageMessage::text(
+            "Dear {$notifiable->name},\n\nYour order *#{$this->order->order_number}* has been confirmed.\n\nTotal Amount: {$this->order->total_amount}\n\nWe will keep you updated on the delivery status. Thank you for your business."
+        );
+    }
+}