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//
// TunnelViewController.swift
// MullvadVPN
//
// Created by Jon Petersson on 2024-12-10.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import Combine
import MapKit
import MullvadLogging
import MullvadREST
import MullvadSettings
import MullvadTypes
import SwiftUI
class TunnelViewController: UIViewController, RootContainment {
private let logger = Logger(label: "TunnelViewController")
private let interactor: TunnelViewControllerInteractor
private var tunnelState: TunnelState = .disconnected
private var connectionViewViewModel: ConnectionViewViewModel
private var indicatorsViewViewModel: FeatureIndicatorsViewModel
private var connectionView: ConnectionView
private var connectionController: UIHostingController<ConnectionView>?
var shouldShowSelectLocationPicker: (() -> Void)?
var shouldShowCancelTunnelAlert: (() -> Void)?
var shouldShowSettingsForFeature: ((FeatureType) -> Void)?
let activityIndicator: SpinnerActivityIndicatorView = {
let activityIndicator = SpinnerActivityIndicatorView(style: .large)
activityIndicator.translatesAutoresizingMaskIntoConstraints = false
activityIndicator.tintColor = .white
activityIndicator.setContentHuggingPriority(.defaultHigh, for: .horizontal)
activityIndicator.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
return activityIndicator
}()
private let mapViewController = MapViewController()
override var preferredStatusBarStyle: UIStatusBarStyle {
.lightContent
}
var preferredHeaderBarPresentation: HeaderBarPresentation {
switch interactor.deviceState {
case .loggedIn, .revoked:
return HeaderBarPresentation(
style: tunnelState.isSecured ? .secured : .unsecured,
showsDivider: false
)
case .loggedOut:
return HeaderBarPresentation(style: .default, showsDivider: true)
}
}
var prefersHeaderBarHidden: Bool {
false
}
var prefersNotificationBarHidden: Bool {
false
}
init(interactor: TunnelViewControllerInteractor) {
self.interactor = interactor
tunnelState = interactor.tunnelStatus.state
connectionViewViewModel = ConnectionViewViewModel(
tunnelStatus: interactor.tunnelStatus,
relayConstraints: interactor.tunnelSettings.relayConstraints,
relayCache: RelayCache(cacheDirectory: ApplicationConfiguration.containerURL),
customListRepository: CustomListRepository()
)
indicatorsViewViewModel = FeatureIndicatorsViewModel(
tunnelSettings: interactor.tunnelSettings,
ipOverrides: interactor.ipOverrides,
tunnelStatus: interactor.tunnelStatus
)
connectionView = ConnectionView(
connectionViewModel: connectionViewViewModel,
indicatorsViewModel: indicatorsViewViewModel
)
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func viewDidLoad() {
super.viewDidLoad()
indicatorsViewViewModel.onFeaturePressed = { [weak self] feature in
self?.shouldShowSettingsForFeature?(feature)
}
interactor.didUpdateDeviceState = { [weak self] _, _ in
self?.setNeedsHeaderBarStyleAppearanceUpdate()
}
interactor.didUpdateTunnelStatus = { [weak self] tunnelStatus in
self?.connectionViewViewModel.update(tunnelStatus: tunnelStatus)
self?.setTunnelState(tunnelStatus.state, animated: true)
self?.indicatorsViewViewModel.tunnelState = tunnelStatus.state
self?.indicatorsViewViewModel.observedState = tunnelStatus.observedState
self?.view.setNeedsLayout()
}
interactor.didGetOutgoingAddress = { [weak self] outgoingConnectionInfo in
self?.connectionViewViewModel.outgoingConnectionInfo = outgoingConnectionInfo
}
interactor.didUpdateTunnelSettings = { [weak self] tunnelSettings in
self?.indicatorsViewViewModel.tunnelSettings = tunnelSettings
self?.connectionViewViewModel.relayConstraints = tunnelSettings.relayConstraints
}
interactor.didUpdateIpOverrides = { [weak self] overrides in
self?.indicatorsViewViewModel.ipOverrides = overrides
}
connectionView.action = { [weak self] action in
switch action {
case .connect:
self?.interactor.startTunnel()
case .cancel:
if case .waitingForConnectivity(.noConnection) = self?.interactor.tunnelStatus.state {
self?.shouldShowCancelTunnelAlert?()
} else {
self?.interactor.stopTunnel()
}
case .disconnect:
self?.interactor.stopTunnel()
case .reconnect:
self?.interactor.reconnectTunnel(selectNewRelay: true)
case .selectLocation:
self?.shouldShowSelectLocationPicker?()
}
}
addMapController()
addActivityIndicator()
addConnectionView()
updateMap(animated: false)
}
func setMainContentHidden(_ isHidden: Bool, animated: Bool) {
let actions = {
_ = self.connectionView.opacity(isHidden ? 0 : 1)
}
if animated {
UIView.animate(withDuration: 0.25, animations: actions)
} else {
actions()
}
}
// MARK: - Private
private func setTunnelState(_ tunnelState: TunnelState, animated: Bool) {
self.tunnelState = tunnelState
setNeedsHeaderBarStyleAppearanceUpdate()
guard isViewLoaded else { return }
updateMap(animated: animated)
}
private func updateMap(animated: Bool) {
switch tunnelState {
case let .connecting(tunnelRelays, _, _):
mapViewController.removeLocationMarker()
mapViewController.setCenter(tunnelRelays?.exit.location.geoCoordinate, animated: animated)
activityIndicator.startAnimating()
case let .reconnecting(tunnelRelays, _, _), let .negotiatingEphemeralPeer(tunnelRelays, _, _, _):
activityIndicator.startAnimating()
mapViewController.removeLocationMarker()
mapViewController.setCenter(tunnelRelays.exit.location.geoCoordinate, animated: animated)
case let .connected(tunnelRelays, _, _):
let center = tunnelRelays.exit.location.geoCoordinate
mapViewController.setCenter(center, animated: animated)
activityIndicator.stopAnimating()
mapViewController.addLocationMarker(coordinate: center)
case .pendingReconnect:
activityIndicator.startAnimating()
mapViewController.removeLocationMarker()
case .waitingForConnectivity, .error:
activityIndicator.stopAnimating()
mapViewController.removeLocationMarker()
case .disconnected, .disconnecting:
activityIndicator.stopAnimating()
mapViewController.removeLocationMarker()
mapViewController.setCenter(nil, animated: animated)
}
}
private func addMapController() {
let mapView = mapViewController.view!
addChild(mapViewController)
mapViewController.alignmentView = activityIndicator
mapViewController.didMove(toParent: self)
view.addConstrainedSubviews([mapView]) {
mapView.pinEdgesToSuperview()
}
}
/// Computes a constraint multiplier based on the screen size
private func computeHeightBreakpointMultiplier() -> CGFloat {
let screenBounds = UIWindow().screen.coordinateSpace.bounds
return screenBounds.height < 700 ? 2.0 : 1.5
}
private func addActivityIndicator() {
// If the device doesn't have a lot of vertical screen estate, center the progress view higher on the map
// so the connection view details do not shadow it unless fully expanded if possible
let heightConstraintMultiplier = computeHeightBreakpointMultiplier()
let verticalCenteredAnchor = activityIndicator.centerYAnchor.anchorWithOffset(to: view.centerYAnchor)
view.addConstrainedSubviews([activityIndicator]) {
activityIndicator.centerXAnchor.constraint(equalTo: view.centerXAnchor)
verticalCenteredAnchor.constraint(
equalTo: activityIndicator.heightAnchor,
multiplier: heightConstraintMultiplier
)
}
}
private func addConnectionView() {
let connectionController = UIHostingController(rootView: connectionView)
self.connectionController = connectionController
let connectionViewProxy = connectionController.view!
connectionViewProxy.backgroundColor = .clear
addChild(connectionController)
connectionController.didMove(toParent: self)
view.addConstrainedSubviews([activityIndicator, connectionViewProxy]) {
connectionViewProxy.pinEdgesToSuperview(.all())
}
}
}
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