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304 lines
13 KiB
Swift
304 lines
13 KiB
Swift
// Copyright © 2021 Metabolist. All rights reserved.
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import Combine
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import Mastodon
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import SafariServices
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import SDWebImage
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import SwiftUI
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import ViewModels
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final class AddIdentityViewController: UIViewController {
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private let viewModel: AddIdentityViewModel
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private let rootViewModel: RootViewModel
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private let displayWelcome: Bool
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private let scrollView = UIScrollView()
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private let stackView = UIStackView()
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private let promptLabel = UILabel()
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private let urlTextField = UITextField()
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private let welcomeLabel = UILabel()
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private let instanceAndButtonsStackView = UIStackView()
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private let instanceStackView = UIStackView()
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private let instanceImageView = SDAnimatedImageView()
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private let instanceTitleLabel = UILabel()
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private let instanceURLLabel = UILabel()
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private let buttonsStackView = UIStackView()
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private let logInButton = CapsuleButton()
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private let activityIndicator = UIActivityIndicatorView(style: .large)
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private let joinButton = CapsuleButton()
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private let browseButton = CapsuleButton()
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private let whatIsMastodonButton = UIButton(type: .system)
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private var cancellables = Set<AnyCancellable>()
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init(viewModel: AddIdentityViewModel, rootViewModel: RootViewModel, displayWelcome: Bool) {
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self.viewModel = viewModel
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self.rootViewModel = rootViewModel
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self.displayWelcome = displayWelcome
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super.init(nibName: nil, bundle: nil)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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configureViews()
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setupViewHierarchy()
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setupConstraints()
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setupViewModelBindings()
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initialDisplay()
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}
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}
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private extension AddIdentityViewController {
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static let verticalSpacing: CGFloat = 20
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static let whatIsMastodonURL = URL(string: "https://joinmastodon.org")!
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// swiftlint:disable:next function_body_length
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func configureViews() {
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scrollView.translatesAutoresizingMaskIntoConstraints = false
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stackView.translatesAutoresizingMaskIntoConstraints = false
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stackView.spacing = Self.verticalSpacing
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stackView.axis = .vertical
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welcomeLabel.translatesAutoresizingMaskIntoConstraints = false
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welcomeLabel.numberOfLines = 0
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welcomeLabel.textAlignment = .center
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welcomeLabel.adjustsFontForContentSizeCategory = true
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welcomeLabel.font = .preferredFont(forTextStyle: .largeTitle)
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welcomeLabel.text = NSLocalizedString("add-identity.welcome", comment: "")
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promptLabel.numberOfLines = 0
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promptLabel.textAlignment = .center
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promptLabel.adjustsFontForContentSizeCategory = true
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promptLabel.font = .preferredFont(forTextStyle: .callout)
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promptLabel.text = NSLocalizedString("add-identity.prompt", comment: "")
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urlTextField.borderStyle = .roundedRect
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urlTextField.textContentType = .URL
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urlTextField.autocapitalizationType = .none
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urlTextField.autocorrectionType = .no
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urlTextField.keyboardType = .URL
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urlTextField.placeholder = NSLocalizedString("add-identity.instance-url", comment: "")
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urlTextField.addAction(
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UIAction { [weak self] _ in self?.viewModel.urlFieldText = self?.urlTextField.text ?? "" },
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for: .editingChanged)
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instanceAndButtonsStackView.spacing = .defaultSpacing
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instanceAndButtonsStackView.distribution = .fillEqually
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instanceStackView.translatesAutoresizingMaskIntoConstraints = false
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instanceStackView.axis = .vertical
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instanceStackView.spacing = .compactSpacing
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instanceStackView.isHidden_stackViewSafe = true
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instanceTitleLabel.numberOfLines = 0
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instanceTitleLabel.textAlignment = .center
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instanceTitleLabel.adjustsFontForContentSizeCategory = true
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instanceTitleLabel.font = .preferredFont(forTextStyle: .headline)
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instanceURLLabel.numberOfLines = 0
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instanceURLLabel.textAlignment = .center
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instanceURLLabel.adjustsFontForContentSizeCategory = true
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instanceURLLabel.font = .preferredFont(forTextStyle: .subheadline)
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instanceURLLabel.textColor = .secondaryLabel
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instanceImageView.contentMode = .scaleAspectFill
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instanceImageView.layer.cornerRadius = .defaultCornerRadius
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instanceImageView.clipsToBounds = true
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instanceImageView.sd_imageIndicator = SDWebImageActivityIndicator.large
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buttonsStackView.axis = .vertical
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buttonsStackView.spacing = .defaultSpacing
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activityIndicator.hidesWhenStopped = true
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logInButton.setTitle(NSLocalizedString("add-identity.log-in", comment: ""), for: .normal)
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logInButton.addAction(
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UIAction { [weak self] _ in
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self?.urlTextField.resignFirstResponder()
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self?.viewModel.logInTapped()
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},
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for: .touchUpInside)
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joinButton.addAction(UIAction { [weak self] _ in self?.join() }, for: .touchUpInside)
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joinButton.isHidden_stackViewSafe = true
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browseButton.setTitle(NSLocalizedString("add-identity.browse", comment: ""), for: .normal)
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browseButton.addAction(
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UIAction { [weak self] _ in self?.viewModel.browseTapped() },
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for: .touchUpInside)
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browseButton.isHidden_stackViewSafe = true
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whatIsMastodonButton.setTitle(NSLocalizedString("add-identity.what-is-mastodon", comment: ""), for: .normal)
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whatIsMastodonButton.addAction(
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UIAction { [weak self] _ in
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self?.present(SFSafariViewController(url: Self.whatIsMastodonURL), animated: true)
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},
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for: .touchUpInside)
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for button in [logInButton, joinButton, browseButton, whatIsMastodonButton] {
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button.setContentCompressionResistancePriority(.required, for: .vertical)
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}
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}
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func setupViewHierarchy() {
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view.addSubview(welcomeLabel)
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view.addSubview(scrollView)
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scrollView.addSubview(stackView)
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stackView.addArrangedSubview(promptLabel)
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stackView.addArrangedSubview(urlTextField)
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stackView.addArrangedSubview(instanceAndButtonsStackView)
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instanceStackView.addArrangedSubview(instanceImageView)
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instanceStackView.addArrangedSubview(instanceTitleLabel)
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instanceStackView.addArrangedSubview(instanceURLLabel)
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instanceAndButtonsStackView.addArrangedSubview(instanceStackView)
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instanceAndButtonsStackView.addArrangedSubview(buttonsStackView)
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buttonsStackView.addArrangedSubview(activityIndicator)
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buttonsStackView.addArrangedSubview(logInButton)
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buttonsStackView.addArrangedSubview(joinButton)
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buttonsStackView.addArrangedSubview(browseButton)
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buttonsStackView.addArrangedSubview(UIView())
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stackView.addArrangedSubview(whatIsMastodonButton)
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}
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func setupConstraints() {
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let instanceImageViewWidthConstraint = instanceImageView.widthAnchor.constraint(
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equalTo: instanceImageView.heightAnchor, multiplier: 16 / 9)
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instanceImageViewWidthConstraint.priority = .justBelowMax
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NSLayoutConstraint.activate([
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welcomeLabel.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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welcomeLabel.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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welcomeLabel.centerYAnchor.constraint(equalTo: view.centerYAnchor),
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scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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scrollView.topAnchor.constraint(equalTo: view.topAnchor),
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scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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stackView.topAnchor.constraint(equalTo: scrollView.topAnchor, constant: .defaultSpacing),
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stackView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
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stackView.widthAnchor.constraint(equalTo: scrollView.readableContentGuide.widthAnchor),
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stackView.centerXAnchor.constraint(equalTo: scrollView.centerXAnchor),
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instanceImageViewWidthConstraint
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])
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}
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func setupViewModelBindings() {
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viewModel.$instance.combineLatest(viewModel.$isPublicTimelineAvailable, viewModel.$loading)
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.throttle(for: .seconds(.defaultAnimationDuration), scheduler: DispatchQueue.main, latest: true)
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.sink { [weak self] in self?.configure(instance: $0, isPublicTimelineAvailable: $1, loading: $2) }
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.store(in: &cancellables)
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viewModel.$alertItem
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.compactMap { $0 }
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.sink { [weak self] in self?.present(alertItem: $0) }
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.store(in: &cancellables)
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// There is a situation adding an identity from secondary navigation in which
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// setting presentingSecondaryNavigation = false on the navigation view model
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// does not work and the old secondary navigation is presented over the new
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// main navigation. This is a hack to fix it.
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rootViewModel.$navigationViewModel.dropFirst()
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.sink { [weak self] _ in self?.dismiss(animated: true) }
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.store(in: &cancellables)
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}
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func initialDisplay() {
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if displayWelcome, !UIAccessibility.isVoiceOverRunning {
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welcomeLabel.alpha = 0
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promptLabel.alpha = 0
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urlTextField.alpha = 0
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logInButton.alpha = 0
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whatIsMastodonButton.alpha = 0
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UIView.animate(withDuration: .longAnimationDuration * 2) {
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self.welcomeLabel.alpha = 1
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} completion: { _ in
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UIView.animate(withDuration: .longAnimationDuration * 2) {
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self.welcomeLabel.alpha = 0
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} completion: { _ in
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self.welcomeLabel.isHidden = true
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UIView.animate(withDuration: .longAnimationDuration) {
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self.promptLabel.alpha = 1
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} completion: { _ in
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UIView.animate(withDuration: .longAnimationDuration) {
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self.urlTextField.alpha = 1
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} completion: { _ in
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self.urlTextField.becomeFirstResponder()
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UIView.animate(withDuration: .longAnimationDuration) {
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self.logInButton.alpha = 1
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} completion: { _ in
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self.whatIsMastodonButton.isHidden_stackViewSafe = false
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self.whatIsMastodonButton.alpha = 0
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UIView.animate(withDuration: .longAnimationDuration) {
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self.whatIsMastodonButton.alpha = 1
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}
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}
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}
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}
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}
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}
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} else {
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welcomeLabel.isHidden_stackViewSafe = true
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whatIsMastodonButton.isHidden_stackViewSafe = !displayWelcome
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urlTextField.becomeFirstResponder()
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}
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}
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func configure(instance: Instance?, isPublicTimelineAvailable: Bool, loading: Bool) {
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if loading {
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self.activityIndicator.startAnimating()
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} else {
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self.activityIndicator.stopAnimating()
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}
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UIView.animate(withDuration: .zeroIfReduceMotion(.defaultAnimationDuration)) {
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self.logInButton.isHidden_stackViewSafe = loading
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if let instance = instance {
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self.instanceTitleLabel.text = instance.title
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self.instanceURLLabel.text = instance.uri
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self.instanceImageView.sd_setImage(with: instance.thumbnail?.url)
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self.instanceStackView.isHidden_stackViewSafe = false
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if instance.registrations {
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let joinButtonTitle: String
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if instance.approvalRequired {
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joinButtonTitle = NSLocalizedString("add-identity.request-invite", comment: "")
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} else {
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joinButtonTitle = NSLocalizedString("add-identity.join", comment: "")
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}
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self.joinButton.setTitle(joinButtonTitle, for: .normal)
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self.joinButton.isHidden_stackViewSafe = loading
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} else {
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self.joinButton.isHidden_stackViewSafe = true
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}
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self.browseButton.isHidden_stackViewSafe = !isPublicTimelineAvailable || loading
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self.whatIsMastodonButton.isHidden_stackViewSafe = true
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} else {
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self.instanceStackView.isHidden_stackViewSafe = true
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self.joinButton.isHidden_stackViewSafe = true
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self.browseButton.isHidden_stackViewSafe = true
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self.whatIsMastodonButton.isHidden_stackViewSafe =
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!self.displayWelcome || self.logInButton.alpha < 1 || loading
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}
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}
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}
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func join() {
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guard let instance = viewModel.instance, let url = viewModel.url else { return }
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let registrationViewModel = viewModel.registrationViewModel(instance: instance, url: url)
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let registrationView = RegistrationView(viewModel: registrationViewModel)
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let registrationViewController = UIHostingController(rootView: registrationView)
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show(registrationViewController, sender: self)
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}
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}
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