BottomSheetViewController part 1

medium_BottomSheetViewController_1.swift

import UIKit

class BottomSheetViewController: UIViewController {
    // MARK: - UI
    /// Main bottom sheet container view
    private lazy var mainContainerView: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = .systemBackground
        view.layer.cornerRadius = 8
        view.clipsToBounds = true
        return view
    }()
    
    /// View to to hold dynamic content
    private lazy var contentView: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    /// Top bar view that draggable to dismiss
    private lazy var topBarView: UIView = {
        let view = UIView()
        view.backgroundColor = .lightGray.withAlphaComponent(0.1)
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    
    /// Top bar line
    private lazy var barLineView: UIView = {
        let view = UIView()
        view.backgroundColor = .lightGray
        view.layer.cornerRadius = 3
        view.translatesAutoresizingMaskIntoConstraints = false
        return view
    }()
    
    /// Dimmed background view
    private lazy var dimmedView: UIView = {
        let view = UIView()
        view.translatesAutoresizingMaskIntoConstraints = false
        view.backgroundColor = .black
        view.alpha = 0
        return view
    }()
  
    override func viewDidLoad() {
        super.viewDidLoad()
        // to be added
    }
}