Repository Pattern Repository getWishlist

ProductRepositoryImpl.kt

class ProductRepositoryImpl(
    private val productApiService: ProductApiService,
    private val productDataMapper: Mapper<DataProduct, Product>,
    private val productPreferences: ProductPreferences
) : ProductRepository {
  
    override fun getWishlist(): Single<Result<List<Product>>> {
        return productApiService.getWishlist(productPreferences.getFavourites()).map {
            when (it) {
                is Result.Success -> Result.Success(mapWishlist(it.value))
                is Result.Failure -> Result.Failure<List<Product>>(it.throwable)
            }
        }
    }

    private fun mapWishlist(wishlist: List<NetworkProduct>): List<Product> {
        return wishlist.map {
            productDataMapper.map(DataProduct(it, true))
        }
    }
      
}