AlexApostolSource

import UIKit

public class AppCoordinator: Coordinator {
    
    public enum AppCoordinatorState {
        case inital
        case willShowLoginFlow
        case didShowLoginFlow
        case willShowTasksFlow(userId:Int?)
    }

AlexApostolSource

class LoginViewBuilder: Builder {
    
    var coordinatorOutput: (LoginViewOutput) -> Void
    init( coordinatorOtput:@escaping(LoginViewOutput)-> Void) {
        self.coordinatorOutput  = coordinatorOtput
    }
    
    func build() -> UIViewController {
        let dataManager = LoginDataManager()
        let presenter = LoginViewPresenter(dataManager: dataManager, coordinatorOutput: coordinatorOutput)

AlexApostolSource

import Foundation

class LoginDataManager: LoginDataManagerProtocol {
    func getUser(callback: @escaping (Result<[User], ApiError>) -> Void) {
        URLSession.shared.get(UserEndPoint.userList, type: [User].self) { (result) in
            switch result {
            case .success(let users):
                if let users = users {
                    callback(.success(users))

AlexApostolSource

extension URLSession {
    
    func get<T:Codable>(_ builder: RequestBuilder, type: T.Type, callback: @escaping(Result<T?,ApiError>) -> Void) {
        
        let decoder = JSONDecoder()
        decoder.keyDecodingStrategy = .convertFromSnakeCase
        
        let dataTask = self.dataTask(with: builder.urlRequest) { data, response, error in
            if let error = error {

AlexApostolSource

enum UserEndPoint {
    case userList
}

extension UserEndPoint: RequestBuilder {
    var urlRequest: URLRequest {
        switch self {
        case .userList:
           guard let url = URL(string: "https://jsonplaceholder.typicode.com/users")

AlexApostolSource

import Foundation

class LoginViewPresenter: LoginViewControllerPresenterProtocol {
  
    weak var view: LoginViewProtocol?
    var dataManager: LoginDataManagerProtocol
    var coordinatorOutPut: (LoginViewOutput) -> Void
    
    init(dataManager: LoginDataManagerProtocol,coordinatorOutput:@escaping(LoginViewOutput)->Void) {
        self.dataManager = dataManager

AlexApostolSource

import UIKit

class LoginViewController: UIViewController {
    var presenter: LoginViewControllerPresenterProtocol
    let model: LoginViewControllerModel

    
    lazy var  titleLabel: UIView = {
        let view = UIView(frame: .zero)

AlexApostolSource

public final actor SharedMutableState {
    private static let defaultPath = "www.google.com"
    public static var basePath: String {
        completion?() ?? defaultPath
    }
    
    private static var completion: (() -> String)?
    
    static func config(basePath: String) {
        completion = {

AlexApostolSource

//
//  Debouncer.swift
//  DesignPatternsShowCase
//
//  Created by Alex.personal on 9/10/25.
//

import Foundation

public typealias DebounceAction = @Sendable () async throws -> Void

AlexApostolSource

/// Print Current simulator folder
// Catch a Breakpoint somewhere. (or Pause program execution (tap on pause in debug area) 
// Enter po NSHomeDirectory() in console window
po NSHomeDirectory() -> 
//Users/usernam/Library/Developer/CoreSimulator/Devices/
//4734F8C7-B90F-4566-8E89-5060505E387F/data/Containers/Data/Application/395818BB-6D0F-499F-AAFE-068A783D9753