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220 lines
10 KiB
Swift
220 lines
10 KiB
Swift
import NVActivityIndicatorView
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@objc(LKDeviceLinkingModal)
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final class DeviceLinkingModal : Modal, DeviceLinkingSessionDelegate {
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private let mode: Mode
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private let delegate: DeviceLinkingModalDelegate?
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private var deviceLink: DeviceLink?
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// MARK: Types
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enum Mode : String { case master, slave }
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// MARK: Components
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private lazy var topSpacer = UIView.spacer(withHeight: 8)
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private lazy var spinner = NVActivityIndicatorView(frame: CGRect.zero, type: .circleStrokeSpin, color: .white, padding: nil)
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private lazy var qrCodeImageView: UIImageView = {
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let result = UIImageView()
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result.contentMode = .scaleAspectFit
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return result
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}()
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private lazy var titleLabel: UILabel = {
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let result = UILabel()
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result.textColor = Theme.primaryColor
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result.font = UIFont.ows_dynamicTypeHeadlineClamped
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result.numberOfLines = 0
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result.lineBreakMode = .byWordWrapping
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result.textAlignment = .center
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return result
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}()
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private lazy var subtitleLabel: UILabel = {
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let result = UILabel()
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result.textColor = Theme.primaryColor
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result.font = UIFont.ows_dynamicTypeCaption1Clamped
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result.numberOfLines = 0
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result.lineBreakMode = .byWordWrapping
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result.textAlignment = .center
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return result
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}()
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private lazy var mnemonicLabel: UILabel = {
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let result = UILabel()
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result.textColor = Theme.primaryColor
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result.font = UIFont.ows_dynamicTypeCaption1Clamped
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result.numberOfLines = 0
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result.lineBreakMode = .byWordWrapping
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result.textAlignment = .center
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return result
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}()
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private lazy var buttonStackView: UIStackView = {
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let result = UIStackView(arrangedSubviews: [ authorizeButton, cancelButton ])
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result.axis = .horizontal
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result.distribution = .fillEqually
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return result
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}()
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private lazy var authorizeButton: OWSFlatButton = {
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let result = OWSFlatButton.button(title: NSLocalizedString("Authorize", comment: ""), font: .ows_dynamicTypeBodyClamped, titleColor: .white, backgroundColor: .clear, target: self, selector: #selector(authorizeDeviceLink))
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result.setBackgroundColors(upColor: .clear, downColor: .clear)
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return result
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}()
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private lazy var bottomSpacer = UIView.spacer(withHeight: 8)
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// MARK: Lifecycle
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init(mode: Mode, delegate: DeviceLinkingModalDelegate?) {
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self.mode = mode
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if mode == .slave {
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guard delegate != nil else { preconditionFailure("Missing delegate for device linking modal in slave mode.") }
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}
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self.delegate = delegate
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super.init(nibName: nil, bundle: nil)
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}
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@objc(initWithMode:delegate:)
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convenience init(modeAsString: String, delegate: DeviceLinkingModalDelegate?) {
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guard let mode = Mode(rawValue: modeAsString) else { preconditionFailure("Invalid mode: \(modeAsString).") }
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self.init(mode: mode, delegate: delegate)
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}
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required init?(coder: NSCoder) { preconditionFailure() }
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override init(nibName: String?, bundle: Bundle?) { preconditionFailure() }
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override func viewDidLoad() {
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super.viewDidLoad()
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switch mode {
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case .master: let _ = DeviceLinkingSession.startListeningForLinkingRequests(with: self)
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case .slave: let _ = DeviceLinkingSession.startListeningForLinkingAuthorization(with: self)
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}
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}
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override func populateContentView() {
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let stackView = UIStackView(arrangedSubviews: [ topSpacer, titleLabel, subtitleLabel, mnemonicLabel, buttonStackView, bottomSpacer ])
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switch mode {
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case .master:
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stackView.insertArrangedSubview(qrCodeImageView, at: 1)
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stackView.insertArrangedSubview(UIView.spacer(withHeight: 2), at: 2)
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case .slave:
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stackView.insertArrangedSubview(spinner, at: 1)
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stackView.insertArrangedSubview(UIView.spacer(withHeight: 8), at: 2)
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}
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contentView.addSubview(stackView)
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stackView.spacing = 16
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stackView.axis = .vertical
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switch mode {
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case .master:
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qrCodeImageView.set(.height, to: 128)
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let hexEncodedPublicKey = OWSIdentityManager.shared().identityKeyPair()!.hexEncodedPublicKey
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let data = hexEncodedPublicKey.data(using: .utf8)
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let filter = CIFilter(name: "CIQRCodeGenerator")!
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filter.setValue(data, forKey: "inputMessage")
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let qrCodeAsCIImage = filter.outputImage!
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let scaledQRCodeAsCIImage = qrCodeAsCIImage.transformed(by: CGAffineTransform(scaleX: 4.8, y: 4.8))
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let qrCode = UIImage(ciImage: scaledQRCodeAsCIImage)
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qrCodeImageView.image = qrCode
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case .slave:
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spinner.set(.height, to: 64)
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spinner.startAnimating()
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}
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titleLabel.text = {
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switch mode {
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case .master: return NSLocalizedString("Waiting for Device", comment: "")
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case .slave: return NSLocalizedString("Waiting for Authorization", comment: "")
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}
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}()
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subtitleLabel.text = {
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switch mode {
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case .master: return NSLocalizedString("Create a new account on your other device and click \"Link Device\" when you're at the \"Create Your Loki Messenger Account\" step to start the linking process", comment: "")
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case .slave: return NSLocalizedString("Please check that the words below match the ones shown on your other device", comment: "")
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}
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}()
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mnemonicLabel.isHidden = (mode == .master)
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if mode == .slave {
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let hexEncodedPublicKey = OWSIdentityManager.shared().identityKeyPair()!.hexEncodedPublicKey.removing05PrefixIfNeeded()
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mnemonicLabel.text = Mnemonic.hash(hexEncodedString: hexEncodedPublicKey)
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}
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let buttonHeight = cancelButton.titleLabel!.font.pointSize * 48 / 17
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authorizeButton.set(.height, to: buttonHeight)
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cancelButton.set(.height, to: buttonHeight)
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authorizeButton.isHidden = true
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bottomSpacer.isHidden = true
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stackView.pin(.leading, to: .leading, of: contentView, withInset: 16)
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stackView.pin(.top, to: .top, of: contentView, withInset: 16)
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contentView.pin(.trailing, to: .trailing, of: stackView, withInset: 16)
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contentView.pin(.bottom, to: .bottom, of: stackView, withInset: 16)
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}
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// MARK: Device Linking
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func requestUserAuthorization(for deviceLink: DeviceLink) {
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self.deviceLink = deviceLink
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topSpacer.isHidden = true
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qrCodeImageView.isHidden = true
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titleLabel.text = NSLocalizedString("Linking Request Received", comment: "")
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subtitleLabel.text = NSLocalizedString("Please check that the words below match the ones shown on your other device", comment: "")
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let hexEncodedPublicKey = deviceLink.slave.hexEncodedPublicKey.removing05PrefixIfNeeded()
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mnemonicLabel.text = Mnemonic.hash(hexEncodedString: hexEncodedPublicKey)
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mnemonicLabel.isHidden = false
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authorizeButton.isHidden = false
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}
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@objc private func authorizeDeviceLink() {
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let deviceLink = self.deviceLink!
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let linkingAuthorizationMessage = DeviceLinkingUtilities.getLinkingAuthorizationMessage(for: deviceLink)
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ThreadUtil.enqueue(linkingAuthorizationMessage)
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SSKEnvironment.shared.messageSender.send(linkingAuthorizationMessage, success: {
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let _ = SSKEnvironment.shared.syncManager.syncAllContacts()
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}) { _ in
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print("[Loki] Failed to send device link authorization message.")
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}
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let session = DeviceLinkingSession.current!
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session.stopListeningForLinkingRequests()
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session.markLinkingRequestAsProcessed()
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dismiss(animated: true, completion: nil)
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let master = DeviceLink.Device(hexEncodedPublicKey: deviceLink.master.hexEncodedPublicKey, signature: linkingAuthorizationMessage.masterSignature)
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let signedDeviceLink = DeviceLink(between: master, and: deviceLink.slave)
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LokiStorageAPI.addDeviceLink(signedDeviceLink).done {
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self.delegate?.handleDeviceLinkAuthorized(signedDeviceLink) // Intentionally capture self strongly
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}.catch { error in
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print("[Loki] Failed to add device link due to error: \(error).")
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}
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}
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func handleDeviceLinkAuthorized(_ deviceLink: DeviceLink) {
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let session = DeviceLinkingSession.current!
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session.stopListeningForLinkingAuthorization()
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topSpacer.isHidden = true
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spinner.stopAnimating()
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spinner.isHidden = true
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titleLabel.text = NSLocalizedString("Device Link Authorized", comment: "")
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subtitleLabel.text = NSLocalizedString("Your device has been linked successfully", comment: "")
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mnemonicLabel.isHidden = true
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buttonStackView.isHidden = true
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bottomSpacer.isHidden = false
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LokiStorageAPI.addDeviceLink(deviceLink).catch { error in
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print("[Loki] Failed to add device link due to error: \(error).")
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}
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Timer.scheduledTimer(withTimeInterval: 2, repeats: false) { _ in
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self.delegate?.handleDeviceLinkAuthorized(deviceLink)
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self.dismiss(animated: true, completion: nil)
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}
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}
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@objc override func cancel() {
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guard let session = DeviceLinkingSession.current else {
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return print("[Loki] Device linking session missing.") // Should never occur
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}
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session.stopListeningForLinkingRequests()
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session.markLinkingRequestAsProcessed() // Only relevant in master mode
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delegate?.handleDeviceLinkingModalDismissed() // Only relevant in slave mode
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if let deviceLink = deviceLink {
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OWSPrimaryStorage.shared().dbReadWriteConnection.readWrite { transaction in
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OWSPrimaryStorage.shared().removePreKeyBundle(forContact: deviceLink.slave.hexEncodedPublicKey, transaction: transaction)
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}
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}
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dismiss(animated: true, completion: nil)
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}
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}
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