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//
// ConnectViewController.swift
// MullvadVPN
//
// Created by pronebird on 20/03/2019.
// Copyright © 2019 Mullvad VPN AB. All rights reserved.
//
import Combine
import UIKit
import NetworkExtension
import os
class ConnectViewController: UIViewController, RootContainment, TunnelControlViewControllerDelegate {
@IBOutlet var secureLabel: UILabel!
@IBOutlet var countryLabel: UILabel!
private var setRelaysSubscriber: AnyCancellable?
private var startStopTunnelSubscriber: AnyCancellable?
private var tunnelStateSubscriber: AnyCancellable?
override var preferredStatusBarStyle: UIStatusBarStyle {
return .lightContent
}
var preferredHeaderBarStyle: HeaderBarStyle {
switch tunnelState {
case .connecting, .reconnecting, .connected:
return .secured
case .disconnecting, .disconnected:
return .unsecured
}
}
private var tunnelState: TunnelState = .disconnected {
didSet {
setNeedsHeaderBarStyleAppearanceUpdate()
updateSecureLabel()
updateTunnelConnectionInfo()
}
}
override func viewDidLoad() {
super.viewDidLoad()
tunnelStateSubscriber = TunnelManager.shared.$tunnelState
.receive(on: DispatchQueue.main)
.assign(to: \.tunnelState, on: self)
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if case .embedTunnelControls = SegueIdentifier.Connect.from(segue: segue) {
let tunnelControlController = segue.destination as! TunnelControlViewController
tunnelControlController.view.translatesAutoresizingMaskIntoConstraints = false
tunnelControlController.delegate = self
}
}
// MARK: - TunnelControlViewControllerDelegate
func tunnelControlViewController(_ controller: TunnelControlViewController, handleAction action: TunnelControlAction) {
switch action {
case .connect:
connectTunnel()
case .disconnect:
disconnectTunnel()
case .selectLocation:
performSegue(withIdentifier: SegueIdentifier.Connect.showRelaySelector.rawValue, sender: self)
}
}
// MARK: - Private
private func updateSecureLabel() {
secureLabel.text = tunnelState.textForSecureLabel()
secureLabel.textColor = tunnelState.textColorForSecureLabel()
}
private func updateTunnelConnectionInfo() {
switch tunnelState {
case .connected(let connectionInfo),
.reconnecting(let connectionInfo):
countryLabel.text = "\(connectionInfo.hostname)\nIn: \(connectionInfo.ipv4Relay)"
case .connecting, .disconnected, .disconnecting:
countryLabel.text = ""
}
}
private func connectTunnel() {
startStopTunnelSubscriber = TunnelManager.shared.startTunnel()
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { (completion) in
if case .failure(let error) = completion {
os_log(.error, "Failed to start the tunnel: %{public}s",
error.localizedDescription)
self.presentError(error, preferredStyle: .alert)
}
})
}
private func disconnectTunnel() {
startStopTunnelSubscriber = TunnelManager.shared.stopTunnel()
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { (completion) in
// no-op
})
}
// MARK: - Actions
@IBAction func unwindFromSelectLocation(segue: UIStoryboardSegue) {
guard let selectLocationController = segue.source as? SelectLocationController else { return }
guard let selectedLocation = selectLocationController.selectedLocation else { return }
let relayConstraints = RelayConstraints(location: .only(selectedLocation))
setRelaysSubscriber = TunnelManager.shared.setRelayConstraints(relayConstraints)
.receive(on: DispatchQueue.main)
.sink(receiveCompletion: { (completion) in
switch completion {
case .finished:
os_log(.debug, "Updated relay constraints: %{public}s", String(reflecting: relayConstraints))
self.connectTunnel()
case .failure(let error):
os_log(.error, "Failed to update relay constraints: %{public}s", error.localizedDescription)
}
})
}
}
private extension TunnelState {
func textColorForSecureLabel() -> UIColor {
switch self {
case .connecting, .reconnecting:
return .white
case .connected:
return .successColor
case .disconnecting, .disconnected:
return .dangerColor
}
}
func textForSecureLabel() -> String {
switch self {
case .connecting, .reconnecting:
return NSLocalizedString("Creating secure connection", comment: "")
case .connected:
return NSLocalizedString("Secure connection", comment: "")
case .disconnecting, .disconnected:
return NSLocalizedString("Unsecured connection", comment: "")
}
}
}
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