SomeViewController3.swift

final class SomeViewController: UIViewController {
    
    typealias GetCardModelsCompletion = (Result<[CardModel], Error>) -> Void
    typealias GetCardModels = (@escaping GetCardModelsCompletion) -> Void
        
    private var cards: [CardModel] = []
    private let getCardModels: GetCardModels
    
    init(getCardModels: @escaping GetCardModels) {
        self.getCardModels = getCardModels
        super.init(nibName: nil, bundle: .main)
    }
    
    required init?(coder: NSCoder) {
        fatalError()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        getCardModels { [weak self] result in
            switch result {
            case .success(let cards):
                self?.cards = cards
            case .failure(let failure):
                print(failure)
            }
        }
    }
}

// From Home Screen
let homeService: CardModelService = HomeService.shared
let viewController: SomeViewController = SomeViewController(getCardModels: homeService.fetchCardModels)

// From Cart Screen
let cartService: CardModelService = CartService.shared
let viewController: SomeViewController = SomeViewController(getCardModels: cartService.fetchCardModels)

// From Profile Screen
let profileService: CardModelService = ProfileService.shared
let viewController: SomeViewController = SomeViewController(getCardModels: profileService.fetchCardModels)