Updated product variants selection

ShopClient/Controllers/ProductDetails/ProductDetailsViewController.swift

@@ -24,19 +24,20 @@ class ProductDetailsViewController: UIViewController, ImagesCarouselViewControll
  var selectedOptions = [SelectedOption]()
  var detailImagesController: ImagesCarouselViewController?
  var showingImageIndex = 0
+ var selectedVariant: ProductVariant?
 
  // MARK: - life cycle
  override func viewDidLoad() {
  super.viewDidLoad()
 
  setupData()
  setupViews()
- populateViews()
  loadRemoteData()
  }
 
  // MARK: - setup
  func setupData() {
+ selectedVariant = product?.variants?.first
  if selectedOptions.count == 0 {
  setupSelectedOptions()
  }
@@ -80,15 +81,21 @@ class ProductDetailsViewController: UIViewController, ImagesCarouselViewControll
  descriptionLabel.text = product.productDescription
  }
 
+ private func updateOptionsViews() {
+ populatePrice()
+ populateAddToCartButton()
+ populateOptionsView()
+ }
+
  private func populatePrice() {
-// priceLabel.text = "\(product?.variantBySelectedOptions?.price ?? String()) \(product?.currency ?? String())"
-// priceLabel.isHidden = product?.variantBySelectedOptions == nil
+ priceLabel.text = "\(selectedVariant?.price ?? String()) \(product?.currency ?? String())"
+ priceLabel.isHidden = selectedVariant?.available == nil
  }
 
  private func populateAddToCartButton() {
-// let enabled = product?.variantBySelectedOptions != nil
-// addToCartButton.backgroundColor = enabled ? UIColor.blue : UIColor.lightGray
-// addToCartButton.isEnabled = enabled
+ let enabled = selectedVariant != nil
+ addToCartButton.backgroundColor = enabled ? UIColor.blue : UIColor.lightGray
+ addToCartButton.isEnabled = enabled
  }
 
  private func populateOptionsView() {
@@ -139,6 +146,24 @@ class ProductDetailsViewController: UIViewController, ImagesCarouselViewControll
  if let index = selectedOptionsNames.index(of: name) {
  selectedOptions[index].value = value
  }
- loadRemoteData()
+ if let variants = product?.variants {
+ findVariant(variants: variants)
+ }
+ }
+
+ private func findVariant(variants: [ProductVariant]) {
+ let selectedOptionsNames = selectedOptions.map({ $0.name })
+ let selectedOptionsNValues = selectedOptions.map({ $0.value })
+
+ for variant in variants {
+ let variantNames = variant.selectedOptions?.map({ $0.name }) ?? [String()]
+ let variantValues = variant.selectedOptions?.map({ $0.value }) ?? [String()]
+
+ if selectedOptionsNames == variantNames && selectedOptionsNValues == variantValues {
+ selectedVariant = variant
+ updateOptionsViews()
+ break
+ }
+ }
  }
 }