[PLAYGROUND] Simplify Storyboard Instantiation

playground_simplify_storyboard_instantiation.swift

import UIKit

enum Storyboard: String {
    case SignUp
    case TopUp
}

enum ViewController {
    enum SignUp: String {
        case createAccount = "CreateAccountVC"
    }
    
    enum TopUp: String {
        case enterAmount = "EnterAmountVC"
    }
}

extension UIStoryboard {
    static func instantiate(signUp viewController: ViewController.SignUp, bundle resource: BundleType? = nil) {
        print(Storyboard.SignUp.rawValue)
        print(viewController.rawValue)
        print(fetchBundle(for: resource ?? .base))
    }
    
    static func instantiate(topUp viewController: ViewController.TopUp, bundle resource: BundleType? = nil) {
        print(Storyboard.TopUp.rawValue)
        print(viewController.rawValue)
        print(fetchBundle(for: resource ?? .base))
    }
    
    private static func fetchBundle(for resource: BundleType) -> Bundle? {
        if let path = Bundle.main.path(forResource: resource.rawValue, ofType: "lproj") {
            return Bundle(path: bundlePath)
        }
        return nil
    }
    
    enum BundleType {
        case base, localized
        
        var rawValue: String {
            switch self {
            case .base:
                return "Base"
            case .localized:
                // fetch user's chosen language
                return "Thai"
            }
        }
    }
}

UIStoryboard.instantiate(topUp: .enterAmount)