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//
// DeviceManagementContentView.swift
// MullvadVPN
//
// Created by pronebird on 19/07/2022.
// Copyright © 2022 Mullvad VPN AB. All rights reserved.
//
import UIKit
class DeviceManagementContentView: UIView {
private let scrollView: UIScrollView = {
let scrollView = UIScrollView()
scrollView.translatesAutoresizingMaskIntoConstraints = false
return scrollView
}()
let scrollContentView: UIView = {
let view = UIView()
view.layoutMargins = UIMetrics.contentLayoutMargins
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
let statusImageView: StatusImageView = {
let imageView = StatusImageView(style: .failure)
imageView.translatesAutoresizingMaskIntoConstraints = false
return imageView
}()
let titleLabel: UILabel = {
let textLabel = UILabel()
textLabel.font = UIFont.systemFont(ofSize: 32)
textLabel.textColor = .white
textLabel.translatesAutoresizingMaskIntoConstraints = false
return textLabel
}()
let messageLabel: UILabel = {
let textLabel = UILabel()
textLabel.font = UIFont.systemFont(ofSize: 17)
textLabel.textColor = .white
textLabel.translatesAutoresizingMaskIntoConstraints = false
textLabel.numberOfLines = 0
if #available(iOS 14.0, *) {
// See: https://stackoverflow.com/q/46200027/351305
textLabel.lineBreakStrategy = []
}
return textLabel
}()
let deviceStackView: UIStackView = {
let stackView = UIStackView(arrangedSubviews: [])
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.spacing = 1
stackView.clipsToBounds = true
stackView.distribution = .fillEqually
return stackView
}()
let continueButton: AppButton = {
let button = AppButton(style: .success)
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle(
NSLocalizedString(
"CONTINUE_BUTTON",
tableName: "DeviceManagement",
value: "Continue with login",
comment: ""
),
for: .normal
)
button.isEnabled = false
return button
}()
let backButton: AppButton = {
let button = AppButton(style: .default)
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle(
NSLocalizedString(
"BACK_BUTTON",
tableName: "DeviceManagement",
value: "Back",
comment: ""
),
for: .normal
)
return button
}()
private lazy var buttonStackView: UIStackView = {
let stackView = UIStackView(arrangedSubviews: [continueButton, backButton])
stackView.translatesAutoresizingMaskIntoConstraints = false
stackView.axis = .vertical
stackView.distribution = .fillEqually
stackView.spacing = UIMetrics.interButtonSpacing
return stackView
}()
var handleDeviceDeletion: ((DeviceViewModel, @escaping () -> Void) -> Void)?
private var currentSnapshot = DataSourceSnapshot<String, String>()
var canContinue = false {
didSet {
updateView()
}
}
override init(frame: CGRect) {
super.init(frame: frame)
addViews()
constraintViews()
updateView()
}
private func addViews() {
[scrollView, buttonStackView].forEach(addSubview)
scrollView.addSubview(scrollContentView)
[statusImageView, titleLabel, messageLabel, deviceStackView]
.forEach(scrollContentView.addSubview)
}
private func constraintViews() {
NSLayoutConstraint.activate([
scrollView.topAnchor.constraint(equalTo: topAnchor),
scrollView.leadingAnchor.constraint(equalTo: leadingAnchor),
scrollView.trailingAnchor.constraint(equalTo: trailingAnchor),
buttonStackView.topAnchor.constraint(
equalTo: scrollView.bottomAnchor,
constant: UIMetrics.contentLayoutMargins.top
),
buttonStackView.leadingAnchor.constraint(
equalTo: leadingAnchor,
constant: UIMetrics.contentLayoutMargins.left
),
buttonStackView.trailingAnchor.constraint(
equalTo: trailingAnchor,
constant: -UIMetrics.contentLayoutMargins.right
),
buttonStackView.bottomAnchor.constraint(
equalTo: safeAreaLayoutGuide.bottomAnchor,
constant: -UIMetrics.contentLayoutMargins.bottom
),
scrollContentView.topAnchor.constraint(equalTo: scrollView.topAnchor),
scrollContentView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
scrollContentView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor),
scrollContentView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
scrollContentView.widthAnchor.constraint(equalTo: scrollView.widthAnchor),
statusImageView.topAnchor
.constraint(equalTo: scrollContentView.layoutMarginsGuide.topAnchor),
statusImageView.centerXAnchor.constraint(equalTo: scrollContentView.centerXAnchor),
titleLabel.topAnchor.constraint(equalTo: statusImageView.bottomAnchor, constant: 22),
titleLabel.leadingAnchor
.constraint(equalTo: scrollContentView.layoutMarginsGuide.leadingAnchor),
titleLabel.trailingAnchor
.constraint(equalTo: scrollContentView.layoutMarginsGuide.trailingAnchor),
messageLabel.topAnchor.constraint(equalTo: titleLabel.bottomAnchor, constant: 8),
messageLabel.leadingAnchor
.constraint(equalTo: scrollContentView.layoutMarginsGuide.leadingAnchor),
messageLabel.trailingAnchor
.constraint(equalTo: scrollContentView.layoutMarginsGuide.trailingAnchor),
deviceStackView.topAnchor.constraint(
equalTo: messageLabel.bottomAnchor,
constant: UIMetrics.sectionSpacing
),
deviceStackView.leadingAnchor.constraint(equalTo: scrollContentView.leadingAnchor),
deviceStackView.trailingAnchor.constraint(equalTo: scrollContentView.trailingAnchor),
deviceStackView.bottomAnchor.constraint(equalTo: scrollContentView.bottomAnchor),
])
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setDeviceViewModels(_ newModels: [DeviceViewModel], animated: Bool) {
var newSnapshot = DataSourceSnapshot<String, String>()
newSnapshot.appendSections([""])
newSnapshot.appendItems(newModels.map { $0.id }, in: "")
let diff = currentSnapshot.difference(newSnapshot)
currentSnapshot = newSnapshot
let applyConfiguration = StackViewApplyDataSnapshotConfiguration { indexPath in
let viewModel = newModels[indexPath.row]
let view = DeviceRowView(viewModel: viewModel)
view.deleteHandler = { [weak self] view in
view.showsActivityIndicator = true
self?.handleDeviceDeletion?(view.viewModel) {
view.showsActivityIndicator = false
}
}
return view
}
diff.apply(
to: deviceStackView,
configuration: applyConfiguration,
animateDifferences: animated
)
}
private func updateView() {
titleLabel.text = titleText
messageLabel.text = messageText
continueButton.isEnabled = canContinue
statusImageView.style = canContinue ? .success : .failure
}
private var titleText: String {
if canContinue {
return NSLocalizedString(
"CONTINUE_LOGIN_TITLE",
tableName: "DeviceManagement",
value: "Super!",
comment: ""
)
} else {
return NSLocalizedString(
"LOGOUT_DEVICES_TITLE",
tableName: "DeviceManagement",
value: "Too many devices",
comment: ""
)
}
}
private var messageText: String {
if canContinue {
return NSLocalizedString(
"CONTINUE_LOGIN_MESSAGE",
tableName: "DeviceManagement",
value: "You can now continue logging in on this device.",
comment: ""
)
} else {
return NSLocalizedString(
"LOGOUT_DEVICES_MESSAGE",
tableName: "DeviceManagement",
value: """
Please log out of at least one by removing it from the list below. You can find \
the corresponding device name under the device’s Account settings.
""",
comment: ""
)
}
}
}
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