import UIKit

class ModalViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // 모달 다이얼로그의 스타일을 설정합니다.
        self.modalPresentationStyle = .overCurrentContext
        self.modalTransitionStyle = .crossDissolve
        
        // 스택 뷰를 생성합니다.
        let stackView = UIStackView()
        stackView.axis = .vertical
        stackView.alignment = .center
        stackView.spacing = 16
        stackView.distribution = .fill
        stackView.translatesAutoresizingMaskIntoConstraints = false
        
        // 스택 뷰에 필요한 뷰를 추가합니다.
        let titleLabel = UILabel()
        titleLabel.text = "모달 다이얼로그"
        titleLabel.font = UIFont.boldSystemFont(ofSize: 24)
        
        let descriptionLabel = UILabel()
        descriptionLabel.text = "이것은 스택 뷰를 사용한 모달 다이얼로그 예제입니다."
        descriptionLabel.textAlignment = .center
        
        let closeButton = UIButton(type: .system)
        closeButton.setTitle("닫기", for: .normal)
        closeButton.addTarget(self, action: #selector(closeModal), for: .touchUpInside)
        
        stackView.addArrangedSubview(titleLabel)
        stackView.addArrangedSubview(descriptionLabel)
        stackView.addArrangedSubview(closeButton)
        
        // 스택 뷰를 뷰 컨트롤러의 뷰에 추가합니다.
        self.view.addSubview(stackView)
        stackView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
        stackView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor).isActive = true
    }
    
    @objc func closeModal() {
        self.dismiss(animated: true, completion: nil)
    }
}

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let showModalButton = UIButton(type: .system)
        showModalButton.setTitle("모달 다이얼로그 표시", for: .normal)
        showModalButton.addTarget(self, action: #selector(showModal), for: .touchUpInside)
        
        self.view.addSubview(showModalButton)
        showModalButton.centerXAnchor.constraint(equalTo: self.view.centerXAnchor).isActive = true
        showModalButton.centerYAnchor.constraint(equalTo: self.view.centerYAnchor).isActive = true
    }
    
    @objc func showModal() {
        let modalVC = ModalViewController()
        modalVC.modalPresentationStyle = .overCurrentContext
        modalVC.modalTransitionStyle = .crossDissolve
        
        self.present(modalVC, animated: true, completion: nil)
    }
}