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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import UIKit
import Combine
class SplashViewController: UIViewController {
init(authenticationManager: AuthenticationManager) {
self.authenticationManager = authenticationManager
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
commonInit()
}
enum State {
case needsAuth
case `default`
}
var state = State.default {
didSet {
self.updateUI()
}
}
var authenticationManager: AuthenticationManager
private lazy var logoImage: UIImageView = {
let logoImage = UIImageView(image: AppInfo.config.wordmark)
logoImage.translatesAutoresizingMaskIntoConstraints = false
return logoImage
}()
private lazy var authButton: UIButton = {
let button = UIButton(type: .system)
button.tintColor = .systemBackground
button.setTitle(UIConstants.strings.unlockWithBiometricsActionButton, for: .normal)
button.titleLabel?.textAlignment = .center
button.addBackgroundView(color: .authButtonBackground, cornerRadius: .cornerRadius)
button.addTarget(self, action: #selector(self.showAuth), for: .touchUpInside)
button.translatesAutoresizingMaskIntoConstraints = false
return button
}()
var cancellable: AnyCancellable?
private func commonInit() {
view.backgroundColor = .launchScreenBackground
view.addSubview(authButton)
view.addSubview(logoImage)
logoImage.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
logoImage.centerXAnchor.constraint(equalTo: view.centerXAnchor),
logoImage.centerYAnchor.constraint(equalTo: view.centerYAnchor),
authButton.centerXAnchor.constraint(equalTo: view.centerXAnchor),
authButton.topAnchor.constraint(equalTo: logoImage.topAnchor, constant: .authButtonTop),
authButton.heightAnchor.constraint(equalToConstant: .authButtonHeight),
authButton.widthAnchor.constraint(equalToConstant: .authButtonWidth),
authButton.leadingAnchor.constraint(greaterThanOrEqualTo: view.leadingAnchor, constant: .authButtonInset),
authButton.trailingAnchor.constraint(lessThanOrEqualTo: view.trailingAnchor, constant: -.authButtonInset)
])
updateUI()
cancellable = authenticationManager
.$authenticationState
.receive(on: DispatchQueue.main)
.sink { state in
switch state {
case .loggedin:
break
case .loggedout:
self.state = .default
case .canceled:
self.state = .needsAuth
}
}
}
private func updateUI() {
authButton.isHidden = state == .default
}
@objc
private func showAuth() {
state = .default
Task {
await authenticationManager.authenticateWithBiometrics()
}
}
}
fileprivate extension UIColor {
static let authButtonBackground = UIColor.actionButton
}
fileprivate extension CGFloat {
static let cornerRadius: CGFloat = 12
static let authButtonHeight: CGFloat = 44
static let authButtonWidth: CGFloat = 500
static let authButtonTop: CGFloat = 80
static let authButtonInset: CGFloat = 16
}
fileprivate extension CATransform3D {
static let start = CATransform3DMakeScale(0.8, 0.8, 1.0)
static let mid = CATransform3DMakeScale(2.0, 2.0, 1.0)
}