UIKit Alerts Storybook tvOS

UIKitAlertsStorybook.swift

//
//  UIKitAlertsStorybook.swift
//  TemplateAppTvOS
//
//  Created by Mert Vurgun on 23.08.2024.
//

import UIKit

class UIKitAlertsStorybook: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        view.backgroundColor = .black
        setupButtons()
    }
    
    private func setupButtons() {
        let buttonTitles = [
            "Basic Alert",
            "Destructive Alert",
            "Action Sheet",
            "Text Input Alert",
            "Custom Alert"
        ]
        
        let actions: [Selector] = [
            #selector(showBasicAlert),
            #selector(showDestructiveAlert),
            #selector(showActionSheet),
            #selector(showTextInputAlert),
            #selector(showCustomAlert)
        ]
        
        let stackView = UIStackView()
        stackView.axis = .vertical
        stackView.alignment = .center
        stackView.distribution = .equalSpacing
        stackView.spacing = 20
        
        for (title, action) in zip(buttonTitles, actions) {
            let button = createButton(title: title, action: action)
            stackView.addArrangedSubview(button)
        }
        
        stackView.translatesAutoresizingMaskIntoConstraints = false
        view.addSubview(stackView)
        
        NSLayoutConstraint.activate([
            stackView.centerXAnchor.constraint(equalTo: view.centerXAnchor),
            stackView.centerYAnchor.constraint(equalTo: view.centerYAnchor)
        ])
    }
    
    private func createButton(title: String, action: Selector) -> UIButton {
        let button = UIButton(type: .system)
        button.setTitle(title, for: .normal)
        button.titleLabel?.font = UIFont.systemFont(ofSize: 18, weight: .medium)
        button.addTarget(self, action: action, for: .primaryActionTriggered)
        return button
    }
    
    // MARK: - Alert Show Methods
    
    @objc private func showBasicAlert() {
        let alert = UIAlertController(title: "Basic Alert", message: "This is a basic alert with OK and Cancel buttons.", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        present(alert, animated: true, completion: nil)
    }
    
    @objc private func showDestructiveAlert() {
        let alert = UIAlertController(title: "Delete Item", message: "Are you sure you want to delete this item?", preferredStyle: .alert)
        alert.addAction(UIAlertAction(title: "Delete", style: .destructive, handler: { _ in
            print("Item Deleted")
        }))
        alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        present(alert, animated: true, completion: nil)
    }
    
    @objc private func showActionSheet() {
        let actionSheet = UIAlertController(title: "Choose an Option", message: nil, preferredStyle: .actionSheet)
        actionSheet.addAction(UIAlertAction(title: "Option 1", style: .default, handler: { _ in
            print("Option 1 selected")
        }))
        actionSheet.addAction(UIAlertAction(title: "Option 2", style: .default, handler: { _ in
            print("Option 2 selected")
        }))
        actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        present(actionSheet, animated: true, completion: nil)
    }
    
    @objc private func showTextInputAlert() {
        let alert = UIAlertController(title: "Input Required", message: "Please enter your name.", preferredStyle: .alert)
        alert.addTextField { textField in
            textField.placeholder = "Name"
        }
        alert.addAction(UIAlertAction(title: "Submit", style: .default, handler: { _ in
            if let text = alert.textFields?.first?.text {
                print("User entered: \(text)")
            }
        }))
        alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
        present(alert, animated: true, completion: nil)
    }
    
    @objc private func showCustomAlert() {
        let alert = UIAlertController(title: nil, message: nil, preferredStyle: .alert)
        let customView = UIView(frame: CGRect(x: 0, y: 0, width: 1100, height: 500))
        customView.backgroundColor = .purple
        customView.layer.cornerRadius = 16
        
        let titleLabel = UILabel()
        titleLabel.text = "Custom Alert"
        titleLabel.textColor = .white
        titleLabel.font = UIFont.systemFont(ofSize: 32, weight: .bold)
        titleLabel.translatesAutoresizingMaskIntoConstraints = false
        
        let messageLabel = UILabel()
        messageLabel.text = "This is a custom-styled alert message."
        messageLabel.textColor = .white
        messageLabel.numberOfLines = 0
        messageLabel.textAlignment = .center
        messageLabel.font = UIFont.systemFont(ofSize: 22, weight: .regular)
        messageLabel.translatesAutoresizingMaskIntoConstraints = false
        
        customView.addSubview(titleLabel)
        customView.addSubview(messageLabel)
        
        NSLayoutConstraint.activate([
            titleLabel.topAnchor.constraint(equalTo: customView.topAnchor, constant: 12),
            titleLabel.centerXAnchor.constraint(equalTo: customView.centerXAnchor),
            
            messageLabel.leadingAnchor.constraint(equalTo: customView.leadingAnchor, constant: 20),
            messageLabel.trailingAnchor.constraint(equalTo: customView.trailingAnchor, constant: -20),
            messageLabel.bottomAnchor.constraint(equalTo: customView.bottomAnchor, constant: -32)
        ])
        
        alert.view.addSubview(customView)
        alert.view.sendSubviewToBack(customView)
        
        let heightConstraint = NSLayoutConstraint(item: alert.view!, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 400)
        alert.view.addConstraint(heightConstraint)
        
        alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { _ in
            print("OK pressed")
        }))
        alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { _ in
            print("Cancel pressed")
        }))
        
        present(alert, animated: true, completion: nil)
    }

}