UITableView set default selected item question

import UIKit
import RxSwift
import RxCocoa
import RxDataSources

class ViewController: UIViewController {

    @IBOutlet weak var tableView: UITableView!
    let viewModel = ViewModel()
    var disposeBag = DisposeBag()
    
    override func viewDidLoad() {
        super.viewDidLoad()

        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "Cell")

        viewModel.items.bind(to: tableView.rx.items) { (_: UITableView, index: Int, item: Model) in
            let indexPath = IndexPath(item: index, section: 0)
            let cell = self.tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
            cell.textLabel?.text = item.name
            return cell
        }.addDisposableTo(disposeBag)

        viewModel.defaultIndex.subscribe { event in
            switch event {
            case .success(let indexPath):
                self.tableView.selectRow(at: indexPath, animated: true, scrollPosition: UITableViewScrollPosition.none)
            case .error(let indexPath):
                print("Error: ", indexPath)
            }
        }
        .disposed(by: disposeBag)

        tableView.rx.itemSelected.asDriver().drive(
            onNext: { [weak self] indexPath in
                guard let `self` = self, (self.tableView.cellForRow(at: indexPath) != nil) else {
                    return
                }
                self.viewModel.select(with: indexPath)
            }
        ).addDisposableTo(disposeBag)
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

    }


}

class ViewModel {

    let items = Observable.just([Model(code: 1, name: "A"), Model(code: 2, name: "B"), Model(code: 3, name: "C")])
    var defaultIndex: Single<IndexPath>

    init() {
        defaultIndex = Single<IndexPath>.create { single in
            single(.success(IndexPath(item: 1, section: 0))) // just hardcoding for now, later I want to create this value from database.
            return Disposables.create {}
        }
    }

    func select(with: IndexPath) {
        // store anywhere
    }

}

class Model {
    let code: Int
    let name: String

    init(code: Int, name: String) {
        self.code = code
        self.name = name
    }
}