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//
// RedeemVoucherViewController.swift
// MullvadVPN
//
// Created by Andreas Lif on 2022-08-05.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import MullvadREST
import MullvadTypes
import UIKit
protocol RedeemVoucherViewControllerDelegate: AnyObject, Sendable {
func redeemVoucherDidSucceed(
_ controller: RedeemVoucherViewController,
with response: REST.SubmitVoucherResponse
)
func redeemVoucherDidCancel(_ controller: RedeemVoucherViewController)
}
@MainActor
class RedeemVoucherViewController: UIViewController, UINavigationControllerDelegate, RootContainment {
private let contentView: RedeemVoucherContentView
nonisolated(unsafe) private var interactor: RedeemVoucherInteractor
weak var delegate: RedeemVoucherViewControllerDelegate?
init(
configuration: RedeemVoucherViewConfiguration,
interactor: RedeemVoucherInteractor
) {
self.contentView = RedeemVoucherContentView(configuration: configuration)
self.interactor = interactor
self.contentView.isUserInteractionEnabled = false
super.init(nibName: nil, bundle: nil)
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override var preferredStatusBarStyle: UIStatusBarStyle {
.lightContent
}
var preferredHeaderBarPresentation: HeaderBarPresentation {
HeaderBarPresentation(style: .default, showsDivider: true)
}
var prefersHeaderBarHidden: Bool {
false
}
var prefersDeviceInfoBarHidden: Bool {
true
}
// MARK: - Life Cycle
override func viewDidLoad() {
super.viewDidLoad()
configureUI()
addActions()
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
contentView.isUserInteractionEnabled = true
contentView.isEditing = true
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
contentView.isEditing = false
}
override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
contentView.isEditing = false
super.viewWillTransition(to: size, with: coordinator)
}
// MARK: - private functions
private func addActions() {
contentView.redeemAction = { [weak self] code in
self?.submit(code: code)
}
contentView.cancelAction = { [weak self] in
self?.cancel()
}
contentView.logoutAction = { [weak self] in
self?.logout()
}
interactor.showLogoutDialog = { [weak self] in
self?.contentView.isLogoutDialogHidden = false
}
}
private func configureUI() {
view.addConstrainedSubviews([contentView]) {
contentView.pinEdgesToSuperview(.all())
}
}
private func submit(code: String) {
contentView.state = .verifying
contentView.isEditing = false
interactor.redeemVoucher(
code: code,
completion: { [weak self] result in
guard let self else { return }
/// Safe to assume `@MainActor` isolation because
/// `TunnelManager.redeemVoucher` sets the `RedeemVoucherOperation`'s `completionQueue` to `.main`
MainActor.assumeIsolated {
switch result {
case let .success(value):
contentView.state = .success
delegate?.redeemVoucherDidSucceed(self, with: value)
case let .failure(error):
contentView.state = .failure(error)
}
}
})
}
private func cancel() {
contentView.isEditing = false
interactor.cancelAll()
delegate?.redeemVoucherDidCancel(self)
}
private func logout() {
contentView.isEditing = false
contentView.state = .logout
Task { [weak self] in
guard let self else { return }
await interactor.logout()
contentView.state = .initial
}
}
}
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