Raiden18

data class Cart(
 val products: List<Product>
)

Raiden18

class CartInteractor(
  private val cartRepository: CartRepository
) {
 
  fun getCart() : Cart {
    return cartRepository.getCart()
  }
}

Raiden18

class CartViewModel(
  private val cartInteractor: CartInteractor
): ViewModel() {
 
  private val approximatePriceOfProductsLiveData = MutableLiveData<String>()
  
  init {
    val cart = cartInteractor.getCart()
    val approximatePriceOfProducts : BigDecimal = TODO("Must be calculated")
    val approximatePriceOfProductsLiveData = approximatePriceOfProducts.toString()

Raiden18

data class Cart(
 val products: List<Product>
) {
 
 val productsApproximatePrice : BigDecimal
  get() = products.sumOf { it.price }
}

Raiden18

class CartInteractor(
  private val cartRepository: CartRepository
) {
 
  fun getCart() : Cart {
    return cartRepository.getCart()
  }
  
  fun getApproximatePriceOfProducts(cart: Cart): BigDecimal {
    return cart.products.sumOf{ it.price }

Raiden18

class AnotherInteractor(
  private val cartInteractor: CartInteractor,
  private val anotherRepository: AnotherRepository
){
  
  fun doSomething() {
    val cart = cartInteractor.getCart()
    anotherRepository.doSomething(cart.productsApproximatePrice)
    // Rest of the code
  }

Raiden18

data class Product(
  val title: String,
  val price: BigDecimal,
  val discount: BigDecimal // Value from 0.00% to 1.00%
)

data class Wishlist(
  val products: List<Product>
){
 

Raiden18

data class Product(
  val title: String,
  val price: BigDecimal,
  val discount: BigDecimal // Value from 0.00% to 1.00%
){
 
  val productPriceWithDiscount : BigDecimal
    get() {
        val discount = price * discount
        return price - discount

Raiden18

sealed class ButtonSize {
    object Small : ButtonSize()
    object Medium : ButtonSize()
    object Large : ButtonSize()
    object Huge : ButtonSize()
    data class Custom(val heightDpInt: Int) : ButtonSize()
}

@Composable
fun RenderButton(

Raiden18

private fun ButtonSize.getButtonHeight(): Dp {
    return when (this) { // Useless checking type
        ButtonSize.Small -> 16.dp // code duplication
        ButtonSize.Medium -> 24.dp // code duplication
        ButtonSize.Large -> 32.dp // code duplication
        ButtonSize.Huge -> 40.dp // code duplication
        is ButtonSize.Custom -> this.heightDpInt.dp // code duplication
    }
}