feat: send WhatsApp notification on PO confirmed

app/Http/Controllers/Purchase/PurchaseOrderController.php

@@ -8,6 +8,7 @@ use App\Models\PurchaseOrder;
 use App\Models\PurchaseOrderItem;
 use App\Models\PurchaseRequest;
 use App\Models\Supplier;
+use App\Notifications\Purchase\PurchaseOrderConfirmedNotification;
 use Illuminate\Http\Request;
 
 class PurchaseOrderController extends Controller
@@ -62,6 +63,10 @@ class PurchaseOrderController extends Controller
             ]);
         }
 
+        if ($order->supplier && $order->supplier->whatsapp_number) {
+            $order->supplier->notify(new PurchaseOrderConfirmedNotification($order));
+        }
+
         return redirect()->route('purchase.orders.show', $order)->with('success', 'Purchase order created successfully.');
     }
 

app/Notifications/Purchase/PurchaseOrderConfirmedNotification.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Notifications\Purchase;
+
+use App\Models\PurchaseOrder;
+use Illuminate\Bus\Queueable;
+use Illuminate\Contracts\Queue\ShouldQueue;
+use Illuminate\Notifications\Notification;
+use PromoSeven\UltraMessage\UltraMessageChannel;
+use PromoSeven\UltraMessage\UltraMessageMessage;
+
+class PurchaseOrderConfirmedNotification extends Notification implements ShouldQueue
+{
+    use Queueable;
+
+    public function __construct(private PurchaseOrder $order) {}
+
+    public function via(mixed $notifiable): array
+    {
+        return [UltraMessageChannel::class];
+    }
+
+    public function toUltraMessage(mixed $notifiable): UltraMessageMessage
+    {
+        return UltraMessageMessage::text(
+            "Dear {$notifiable->name},\n\nPurchase Order *#{$this->order->po_number}* has been confirmed.\n\nTotal Amount: {$this->order->total_amount}\nExpected Delivery: {$this->order->expected_delivery_date}\n\nThank you."
+        );
+    }
+}