feat: send WhatsApp notification on delivery dispatched

app/Http/Controllers/Sales/DeliveryNoteController.php

@@ -11,6 +11,7 @@ use App\Models\SalesOrderItem;
 use App\Models\StockLevel;
 use App\Models\StockMovement;
 use App\Models\Warehouse;
+use App\Notifications\Sales\DeliveryDispatchedNotification;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\DB;
 
@@ -145,6 +146,10 @@ class DeliveryNoteController extends Controller
             }
         });
 
+        if ($deliveryNote->customer && $deliveryNote->customer->whatsapp_number) {
+            $deliveryNote->customer->notify(new DeliveryDispatchedNotification($deliveryNote));
+        }
+
         return redirect()->back()->with('success', 'Delivery note dispatched and stock decremented.');
     }
 }

app/Notifications/Sales/DeliveryDispatchedNotification.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Notifications\Sales;
+
+use App\Models\DeliveryNote;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Notification;
+use PromoSeven\UltraMessage\UltraMessageChannel;
+use PromoSeven\UltraMessage\UltraMessageMessage;
+
+class DeliveryDispatchedNotification extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    public function __construct(private DeliveryNote $delivery) {}
+
+    public function via(mixed $notifiable): array
+    {
+        return [UltraMessageChannel::class];
+    }
+
+    public function toUltraMessage(mixed $notifiable): UltraMessageMessage
+    {
+        return UltraMessageMessage::text(
+            "Dear {$notifiable->name},\n\nYour delivery *#{$this->delivery->delivery_number}* has been dispatched and is on its way.\n\nOrder Reference: {$this->delivery->salesOrder->order_number}\nDispatch Date: {$this->delivery->delivery_date}\n\nThank you for your business."
+        );
+    }
+}