AR button action flow with Commercetools

cartActionFlow.swift

// Step 1. create a menu button to select products

// Then on this menu button click... search for products, you can set a filter as required
ProductProjection.search(sort: ["name.en asc"], limit: 10, lang: Locale(identifier: "en"), { result in
if let response = result.model, let total = response.total as? UInt,
let results = response.results as? Array<ProductProjection>, result.isSuccess {
     //handle showing results
}
                                                                                            
....
                                                                                            
// Step 2. Update the view with the product selected
let couch = SCNScene(named: "art.scnassets/sofa.dae")
self.object3D =  couch?.rootNode;
self.object.removeFromParentNode()
self.object = self.object3D;
                                                                                            
....
                                                                                            
// Step 3. Cart the product as required in your logic flow 
Cart.byId(self.cartID, result: { result in
  let currentCartVersion = result.model?.version;
  let draft = LineItemDraft(productVariantSelection:  .productVariant(productId: self.currentProductID, variantId:  Int(self.currentProductVariantID)! ))
  let updateActions = UpdateActions<CartUpdateAction>(version:     currentCartVersion!, actions: [.addLineItem(lineItemDraft: draft)])
  Cart.update(self.cartID, actions: updateActions, result:{result in
     if let cart = result.model, result.isSuccess {
     // Cart successfully updated, response contains updated cart
     }else{
       print("error: " + (result.errors?.description)!);
     }
  })
})