feat: add Tripay fee as a Biaya Layanan item in WhatsApp notifications

controllers/order_controller.go

@@ -629,6 +629,7 @@ func TripayWebhook(c *gin.Context) {
 			}
 
 			var waItems []services.WAItem
+			itemsTotal := 0
 			for _, item := range order.Items {
 				pName := "Item"
 				if item.Product != nil {
@@ -639,6 +640,15 @@ func TripayWebhook(c *gin.Context) {
 					Quantity: item.Quantity,
 					Price:    item.UnitPrice,
 				})
+				itemsTotal += (item.Quantity * item.UnitPrice)
+			}
+
+			if order.TotalAmount > itemsTotal {
+				waItems = append(waItems, services.WAItem{
+					Name:     "Biaya Layanan QRIS",
+					Quantity: 1,
+					Price:    order.TotalAmount - itemsTotal,
+				})
 			}
 
 			var company models.Company