373 lines
16 KiB
Swift
373 lines
16 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import UIKit
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import AVFoundation
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import SessionUIKit
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import SessionUtilitiesKit
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import SessionSnodeKit
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import SignalUtilitiesKit
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final class LinkDeviceVC: BaseVC, UIPageViewControllerDataSource, UIPageViewControllerDelegate, QRScannerDelegate {
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private let pageVC = UIPageViewController(transitionStyle: .scroll, navigationOrientation: .horizontal, options: nil)
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private var pages: [UIViewController] = []
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private var targetVCIndex: Int?
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private var tabBarTopConstraint: NSLayoutConstraint!
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private var activityIndicatorModal: ModalActivityIndicatorViewController?
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// MARK: - Components
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private lazy var tabBar: TabBar = {
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let tabs = [
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TabBar.Tab(title: "vc_link_device_recovery_phrase_tab_title".localized()) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[0] ], direction: .forward, animated: false, completion: nil)
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},
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TabBar.Tab(title: "vc_link_device_scan_qr_code_tab_title".localized()) { [weak self] in
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guard let self = self else { return }
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self.pageVC.setViewControllers([ self.pages[1] ], direction: .forward, animated: false, completion: nil)
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}
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]
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return TabBar(tabs: tabs)
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}()
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private lazy var recoveryPhraseVC: RecoveryPhraseVC = {
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let result = RecoveryPhraseVC()
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result.linkDeviceVC = self
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return result
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}()
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private lazy var scanQRCodePlaceholderVC: ScanQRCodePlaceholderVC = {
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let result = ScanQRCodePlaceholderVC()
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result.linkDeviceVC = self
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return result
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}()
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private lazy var scanQRCodeWrapperVC: ScanQRCodeWrapperVC = {
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let message = "vc_link_device_scan_qr_code_explanation".localized()
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let result = ScanQRCodeWrapperVC(message: message)
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result.delegate = self
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return result
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}()
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// MARK: - Lifecycle
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override func viewDidLoad() {
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super.viewDidLoad()
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setNavBarTitle("vc_link_device_title".localized())
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// Page VC
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let hasCameraAccess = (AVCaptureDevice.authorizationStatus(for: .video) == .authorized)
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pages = [ recoveryPhraseVC, (hasCameraAccess ? scanQRCodeWrapperVC : scanQRCodePlaceholderVC) ]
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pageVC.dataSource = self
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pageVC.delegate = self
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pageVC.setViewControllers([ recoveryPhraseVC ], direction: .forward, animated: false, completion: nil)
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// Tab bar
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view.addSubview(tabBar)
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tabBar.pin(.leading, to: .leading, of: view)
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tabBarTopConstraint = tabBar.autoPinEdge(toSuperviewSafeArea: .top)
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view.pin(.trailing, to: .trailing, of: tabBar)
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// Page VC constraints
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let pageVCView = pageVC.view!
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view.addSubview(pageVCView)
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pageVCView.pin(.leading, to: .leading, of: view)
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pageVCView.pin(.top, to: .bottom, of: tabBar)
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view.pin(.trailing, to: .trailing, of: pageVCView)
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view.pin(.bottom, to: .bottom, of: pageVCView)
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let screen = UIScreen.main.bounds
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pageVCView.set(.width, to: screen.width)
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let statusBarHeight = UIApplication.shared.statusBarFrame.height
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let height = (navigationController?.view.bounds.height ?? 0) - (navigationController?.navigationBar.bounds.height ?? 0) - TabBar.snHeight - statusBarHeight
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pageVCView.set(.height, to: height)
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recoveryPhraseVC.constrainHeight(to: height)
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scanQRCodePlaceholderVC.constrainHeight(to: height)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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Onboarding.Flow.register.unregister()
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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tabBarTopConstraint.constant = navigationController!.navigationBar.height()
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}
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// MARK: - General
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerBefore viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != 0 else { return nil }
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return pages[index - 1]
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}
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func pageViewController(_ pageViewController: UIPageViewController, viewControllerAfter viewController: UIViewController) -> UIViewController? {
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guard let index = pages.firstIndex(of: viewController), index != (pages.count - 1) else { return nil }
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return pages[index + 1]
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}
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fileprivate func handleCameraAccessGranted() {
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DispatchQueue.main.async {
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self.pages[1] = self.scanQRCodeWrapperVC
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self.pageVC.setViewControllers([ self.scanQRCodeWrapperVC ], direction: .forward, animated: false, completion: nil)
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}
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}
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// MARK: - Updating
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func pageViewController(_ pageViewController: UIPageViewController, willTransitionTo pendingViewControllers: [UIViewController]) {
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guard let targetVC = pendingViewControllers.first, let index = pages.firstIndex(of: targetVC) else { return }
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targetVCIndex = index
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}
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func pageViewController(_ pageViewController: UIPageViewController, didFinishAnimating isFinished: Bool, previousViewControllers: [UIViewController], transitionCompleted isCompleted: Bool) {
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guard isCompleted, let index = targetVCIndex else { return }
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tabBar.selectTab(at: index)
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}
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// MARK: - Interaction
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func controller(_ controller: QRCodeScanningViewController, didDetectQRCodeWith string: String, onError: (() -> ())?) {
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let seed = Data(hex: string)
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continueWithSeed(seed, onError: onError)
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}
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func continueWithSeed(_ seed: Data, onError: (() -> ())?) {
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if (seed.count != 16) {
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let modal: ConfirmationModal = ConfirmationModal(
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info: ConfirmationModal.Info(
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title: "invalid_recovery_phrase".localized(),
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body: .text("INVALID_RECOVERY_PHRASE_MESSAGE".localized()),
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cancelTitle: "BUTTON_OK".localized(),
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cancelStyle: .alert_text,
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afterClosed: onError
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)
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)
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present(modal, animated: true)
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return
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}
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let (ed25519KeyPair, x25519KeyPair) = try! Identity.generate(from: seed)
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Onboarding.Flow.link
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.preregister(
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with: seed,
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ed25519KeyPair: ed25519KeyPair,
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x25519KeyPair: x25519KeyPair
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)
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// Otherwise continue on to request push notifications permissions
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let pnModeVC: PNModeVC = PNModeVC(flow: .link)
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self.navigationController?.pushViewController(pnModeVC, animated: true)
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}
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}
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private final class RecoveryPhraseVC: UIViewController {
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weak var linkDeviceVC: LinkDeviceVC!
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private var spacer1HeightConstraint: NSLayoutConstraint!
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private var spacer2HeightConstraint: NSLayoutConstraint!
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private var restoreButtonBottomOffsetConstraint: NSLayoutConstraint!
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private var bottomConstraint: NSLayoutConstraint!
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private lazy var mnemonicTextView: TextView = {
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let result = TextView(placeholder: "vc_restore_seed_text_field_hint".localized())
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result.themeBorderColor = .textPrimary
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result.accessibilityLabel = "Enter your recovery phrase"
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return result
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}()
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// MARK: - Lifecycle
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override func viewDidLoad() {
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view.themeBackgroundColor = .clear
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// Title label
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let titleLabel = UILabel()
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titleLabel.font = .boldSystemFont(ofSize: isIPhone5OrSmaller ? Values.largeFontSize : Values.veryLargeFontSize)
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titleLabel.text = "vc_enter_recovery_phrase_title".localized()
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titleLabel.themeTextColor = .textPrimary
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titleLabel.lineBreakMode = .byWordWrapping
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titleLabel.numberOfLines = 0
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// Explanation label
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let explanationLabel = UILabel()
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explanationLabel.font = .systemFont(ofSize: Values.smallFontSize)
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explanationLabel.text = "vc_enter_recovery_phrase_explanation".localized()
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explanationLabel.themeTextColor = .textPrimary
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explanationLabel.lineBreakMode = .byWordWrapping
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explanationLabel.numberOfLines = 0
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// Spacers
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let topSpacer = UIView.vStretchingSpacer()
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let spacer1 = UIView()
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spacer1HeightConstraint = spacer1.set(.height, to: isIPhone5OrSmaller ? Values.smallSpacing : Values.veryLargeSpacing)
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let spacer2 = UIView()
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spacer2HeightConstraint = spacer2.set(.height, to: isIPhone5OrSmaller ? Values.smallSpacing : Values.veryLargeSpacing)
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let bottomSpacer = UIView.vStretchingSpacer()
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let restoreButtonBottomOffsetSpacer = UIView()
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restoreButtonBottomOffsetConstraint = restoreButtonBottomOffsetSpacer.set(.height, to: Values.onboardingButtonBottomOffset)
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// Continue button
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let continueButton = SessionButton(style: .filled, size: .large)
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continueButton.accessibilityLabel = "Link device"
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continueButton.setTitle("continue_2".localized(), for: UIControl.State.normal)
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continueButton.addTarget(self, action: #selector(handleContinueButtonTapped), for: UIControl.Event.touchUpInside)
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// Continue button container
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let continueButtonContainer = UIView(wrapping: continueButton, withInsets: UIEdgeInsets(top: 0, leading: Values.massiveSpacing, bottom: 0, trailing: Values.massiveSpacing), shouldAdaptForIPadWithWidth: Values.iPadButtonWidth)
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// Top stack view
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let topStackView = UIStackView(arrangedSubviews: [ titleLabel, spacer1, explanationLabel, spacer2, mnemonicTextView ])
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topStackView.axis = .vertical
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topStackView.alignment = .fill
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// Top stack view container
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let topStackViewContainer = UIView()
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topStackViewContainer.addSubview(topStackView)
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topStackView.pin(.leading, to: .leading, of: topStackViewContainer, withInset: Values.veryLargeSpacing)
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topStackView.pin(.top, to: .top, of: topStackViewContainer)
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topStackViewContainer.pin(.trailing, to: .trailing, of: topStackView, withInset: Values.veryLargeSpacing)
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topStackViewContainer.pin(.bottom, to: .bottom, of: topStackView)
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// Main stack view
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let mainStackView = UIStackView(arrangedSubviews: [ topSpacer, topStackViewContainer, bottomSpacer, continueButtonContainer, restoreButtonBottomOffsetSpacer ])
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mainStackView.axis = .vertical
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mainStackView.alignment = .fill
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view.addSubview(mainStackView)
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mainStackView.pin(.leading, to: .leading, of: view)
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mainStackView.pin(.top, to: .top, of: view)
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mainStackView.pin(.trailing, to: .trailing, of: view)
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bottomConstraint = mainStackView.pin(.bottom, to: .bottom, of: view)
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topSpacer.heightAnchor.constraint(equalTo: bottomSpacer.heightAnchor, multiplier: 1).isActive = true
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// Dismiss keyboard on tap
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let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(dismissKeyboard))
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view.addGestureRecognizer(tapGestureRecognizer)
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// Listen to keyboard notifications
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let notificationCenter = NotificationCenter.default
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillChangeFrameNotification(_:)), name: UIResponder.keyboardWillChangeFrameNotification, object: nil)
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notificationCenter.addObserver(self, selector: #selector(handleKeyboardWillHideNotification(_:)), name: UIResponder.keyboardWillHideNotification, object: nil)
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// Set up width constraint
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view.set(.width, to: UIScreen.main.bounds.width)
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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// MARK: - General
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func dismissKeyboard() {
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mnemonicTextView.resignFirstResponder()
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}
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// MARK: - Updating
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@objc private func handleKeyboardWillChangeFrameNotification(_ notification: Notification) {
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guard let newHeight = (notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey] as? NSValue)?.cgRectValue.size.height else { return }
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bottomConstraint.constant = -newHeight // Negative due to how the constraint is set up
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restoreButtonBottomOffsetConstraint.constant = isIPhone6OrSmaller ? Values.smallSpacing : Values.largeSpacing
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spacer1HeightConstraint.constant = isIPhone6OrSmaller ? Values.smallSpacing : Values.mediumSpacing
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spacer2HeightConstraint.constant = isIPhone6OrSmaller ? Values.smallSpacing : Values.mediumSpacing
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UIView.animate(withDuration: 0.25) {
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self.view.layoutIfNeeded()
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}
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}
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@objc private func handleKeyboardWillHideNotification(_ notification: Notification) {
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bottomConstraint.constant = 0
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restoreButtonBottomOffsetConstraint.constant = Values.onboardingButtonBottomOffset
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spacer1HeightConstraint.constant = isIPhone5OrSmaller ? Values.smallSpacing : Values.veryLargeSpacing
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spacer2HeightConstraint.constant = isIPhone5OrSmaller ? Values.smallSpacing : Values.veryLargeSpacing
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UIView.animate(withDuration: 0.25) {
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self.view.layoutIfNeeded()
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}
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}
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// MARK: - Interaction
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@objc private func handleContinueButtonTapped() {
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func showError(title: String, message: String = "") {
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let modal: ConfirmationModal = ConfirmationModal(
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targetView: self.view,
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info: ConfirmationModal.Info(
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title: title,
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body: .text(message),
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cancelTitle: "BUTTON_OK".localized(),
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cancelStyle: .alert_text
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)
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)
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self.present(modal, animated: true)
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}
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do {
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let mnemonic = (mnemonicTextView.text ?? "").lowercased()
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let hexEncodedSeed = try Mnemonic.decode(mnemonic: mnemonic)
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let seed = Data(hex: hexEncodedSeed)
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mnemonicTextView.resignFirstResponder()
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linkDeviceVC.continueWithSeed(seed, onError: nil)
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} catch let error {
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let error = error as? Mnemonic.DecodingError ?? Mnemonic.DecodingError.generic
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showError(title: error.errorDescription!)
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}
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}
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}
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private final class ScanQRCodePlaceholderVC: UIViewController {
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weak var linkDeviceVC: LinkDeviceVC!
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override func viewDidLoad() {
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// Remove background color
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view.themeBackgroundColor = .clear
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// Set up explanation label
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let explanationLabel = UILabel()
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explanationLabel.font = .systemFont(ofSize: Values.smallFontSize)
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explanationLabel.text = "vc_scan_qr_code_camera_access_explanation".localized()
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explanationLabel.themeTextColor = .textPrimary
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explanationLabel.textAlignment = .center
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explanationLabel.lineBreakMode = .byWordWrapping
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explanationLabel.numberOfLines = 0
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// Set up call to action button
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let callToActionButton = UIButton()
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callToActionButton.titleLabel?.font = .boldSystemFont(ofSize: Values.mediumFontSize)
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callToActionButton.setTitle("continue_2".localized(), for: .normal)
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callToActionButton.setThemeTitleColor(.primary, for: .normal)
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callToActionButton.addTarget(self, action: #selector(requestCameraAccess), for: .touchUpInside)
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// Set up stack view
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let stackView = UIStackView(arrangedSubviews: [ explanationLabel, callToActionButton ])
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stackView.axis = .vertical
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stackView.spacing = Values.mediumSpacing
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stackView.alignment = .center
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// Set up constraints
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view.set(.width, to: UIScreen.main.bounds.width)
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view.addSubview(stackView)
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stackView.pin(.leading, to: .leading, of: view, withInset: Values.massiveSpacing)
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view.pin(.trailing, to: .trailing, of: stackView, withInset: Values.massiveSpacing)
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let verticalCenteringConstraint = stackView.center(.vertical, in: view)
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verticalCenteringConstraint.constant = -16 // Makes things appear centered visually
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}
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func constrainHeight(to height: CGFloat) {
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view.set(.height, to: height)
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}
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@objc private func requestCameraAccess() {
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Permissions.requestCameraPermissionIfNeeded { [weak self] in
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self?.linkDeviceVC.handleCameraAccessGranted()
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}
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}
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}
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