595 lines
28 KiB
Swift
595 lines
28 KiB
Swift
//
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// MastodonPickServerViewController.swift
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// Mastodon
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//
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// Created by BradGao on 2021/2/20.
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//
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import os.log
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import UIKit
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import Combine
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import GameController
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import AuthenticationServices
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final class MastodonPickServerViewController: UIViewController, NeedsDependency {
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private var disposeBag = Set<AnyCancellable>()
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private var tableViewObservation: NSKeyValueObservation?
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weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
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weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
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var viewModel: MastodonPickServerViewModel!
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private(set) lazy var authenticationViewModel = AuthenticationViewModel(
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context: context,
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coordinator: coordinator,
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isAuthenticationExist: false
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)
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private var expandServerDomainSet = Set<String>()
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private let emptyStateView = PickServerEmptyStateView()
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private var emptyStateViewLeadingLayoutConstraint: NSLayoutConstraint!
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private var emptyStateViewTrailingLayoutConstraint: NSLayoutConstraint!
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let tableViewTopPaddingView = UIView() // fix empty state view background display when tableView bounce scrolling
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var tableViewTopPaddingViewHeightLayoutConstraint: NSLayoutConstraint!
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let tableView: UITableView = {
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let tableView = ControlContainableTableView()
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tableView.register(PickServerTitleCell.self, forCellReuseIdentifier: String(describing: PickServerTitleCell.self))
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tableView.register(PickServerCategoriesCell.self, forCellReuseIdentifier: String(describing: PickServerCategoriesCell.self))
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tableView.register(PickServerSearchCell.self, forCellReuseIdentifier: String(describing: PickServerSearchCell.self))
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tableView.register(PickServerCell.self, forCellReuseIdentifier: String(describing: PickServerCell.self))
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tableView.register(PickServerLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: PickServerLoaderTableViewCell.self))
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tableView.rowHeight = UITableView.automaticDimension
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tableView.separatorStyle = .none
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tableView.backgroundColor = .clear
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tableView.keyboardDismissMode = .onDrag
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tableView.translatesAutoresizingMaskIntoConstraints = false
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if #available(iOS 15.0, *) {
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tableView.sectionHeaderTopPadding = .leastNonzeroMagnitude
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} else {
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// Fallback on earlier versions
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}
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return tableView
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}()
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let buttonContainer = UIView()
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let nextStepButton: PrimaryActionButton = {
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let button = PrimaryActionButton()
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button.setTitle(L10n.Common.Controls.Actions.signUp, for: .normal)
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button.translatesAutoresizingMaskIntoConstraints = false
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return button
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}()
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var buttonContainerBottomLayoutConstraint: NSLayoutConstraint!
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var mastodonAuthenticationController: MastodonAuthenticationController?
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deinit {
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tableViewObservation = nil
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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}
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}
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extension MastodonPickServerViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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setupOnboardingAppearance()
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defer { setupNavigationBarBackgroundView() }
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configureTitleLabel()
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configureMargin()
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#if DEBUG
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navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(systemName: "ellipsis.circle"), style: .plain, target: nil, action: nil)
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let children: [UIMenuElement] = [
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UIAction(title: "Dismiss", image: nil, identifier: nil, discoverabilityTitle: nil, attributes: [], state: .off, handler: { [weak self] _ in
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guard let self = self else { return }
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self.dismiss(animated: true, completion: nil)
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})
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]
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navigationItem.rightBarButtonItem?.menu = UIMenu(title: "Debug Tool", image: nil, identifier: nil, options: [], children: children)
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#endif
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buttonContainer.translatesAutoresizingMaskIntoConstraints = false
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buttonContainer.preservesSuperviewLayoutMargins = true
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view.addSubview(buttonContainer)
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buttonContainerBottomLayoutConstraint = view.bottomAnchor.constraint(equalTo: buttonContainer.bottomAnchor, constant: 0).priority(.defaultHigh)
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NSLayoutConstraint.activate([
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buttonContainer.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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buttonContainer.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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view.safeAreaLayoutGuide.bottomAnchor.constraint(greaterThanOrEqualTo: buttonContainer.bottomAnchor, constant: WelcomeViewController.viewBottomPaddingHeight),
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buttonContainerBottomLayoutConstraint,
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])
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view.addSubview(nextStepButton)
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NSLayoutConstraint.activate([
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nextStepButton.topAnchor.constraint(equalTo: buttonContainer.topAnchor),
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nextStepButton.leadingAnchor.constraint(equalTo: buttonContainer.layoutMarginsGuide.leadingAnchor),
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buttonContainer.layoutMarginsGuide.trailingAnchor.constraint(equalTo: nextStepButton.trailingAnchor),
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nextStepButton.bottomAnchor.constraint(equalTo: buttonContainer.bottomAnchor),
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nextStepButton.heightAnchor.constraint(equalToConstant: MastodonPickServerViewController.actionButtonHeight).priority(.defaultHigh),
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])
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// fix AutoLayout warning when observe before view appear
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viewModel.viewWillAppear
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.receive(on: DispatchQueue.main)
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.sink { [weak self] in
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guard let self = self else { return }
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self.tableViewObservation = self.tableView.observe(\.contentSize, options: [.initial, .new]) { [weak self] tableView, _ in
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guard let self = self else { return }
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self.updateEmptyStateViewLayout()
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}
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}
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.store(in: &disposeBag)
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tableViewTopPaddingView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(tableViewTopPaddingView)
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tableViewTopPaddingViewHeightLayoutConstraint = tableViewTopPaddingView.heightAnchor.constraint(equalToConstant: 0.0).priority(.defaultHigh)
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NSLayoutConstraint.activate([
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tableViewTopPaddingView.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor),
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tableViewTopPaddingView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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tableViewTopPaddingView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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tableViewTopPaddingViewHeightLayoutConstraint,
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])
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tableViewTopPaddingView.backgroundColor = Asset.Theme.Mastodon.systemGroupedBackground.color
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view.addSubview(tableView)
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NSLayoutConstraint.activate([
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tableView.topAnchor.constraint(equalTo: view.topAnchor),
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tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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buttonContainer.topAnchor.constraint(equalTo: tableView.bottomAnchor, constant: 7),
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])
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emptyStateView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(emptyStateView)
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emptyStateViewLeadingLayoutConstraint = emptyStateView.leadingAnchor.constraint(equalTo: tableView.leadingAnchor)
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emptyStateViewTrailingLayoutConstraint = tableView.trailingAnchor.constraint(equalTo: emptyStateView.trailingAnchor)
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NSLayoutConstraint.activate([
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emptyStateView.topAnchor.constraint(equalTo: view.topAnchor),
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emptyStateViewLeadingLayoutConstraint,
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emptyStateViewTrailingLayoutConstraint,
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buttonContainer.topAnchor.constraint(equalTo: emptyStateView.bottomAnchor, constant: 21),
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])
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view.sendSubviewToBack(emptyStateView)
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// update layout when keyboard show/dismiss
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let keyboardEventPublishers = Publishers.CombineLatest3(
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KeyboardResponderService.shared.isShow,
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KeyboardResponderService.shared.state,
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KeyboardResponderService.shared.endFrame
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)
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keyboardEventPublishers
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.sink { [weak self] keyboardEvents in
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guard let self = self else { return }
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let (isShow, state, endFrame) = keyboardEvents
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// guard external keyboard connected
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guard isShow, state == .dock, GCKeyboard.coalesced != nil else {
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self.buttonContainerBottomLayoutConstraint.constant = WelcomeViewController.viewBottomPaddingHeight
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return
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}
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let externalKeyboardToolbarHeight = self.view.frame.maxY - endFrame.minY
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guard externalKeyboardToolbarHeight > 0 else {
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self.buttonContainerBottomLayoutConstraint.constant = WelcomeViewController.viewBottomPaddingHeight
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return
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}
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UIView.animate(withDuration: 0.3) {
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self.buttonContainerBottomLayoutConstraint.constant = externalKeyboardToolbarHeight + 16
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self.view.layoutIfNeeded()
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}
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}
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.store(in: &disposeBag)
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switch viewModel.mode {
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case .signIn:
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nextStepButton.setTitle(L10n.Common.Controls.Actions.signIn, for: .normal)
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case .signUp:
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nextStepButton.setTitle(L10n.Common.Controls.Actions.continue, for: .normal)
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}
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nextStepButton.addTarget(self, action: #selector(nextStepButtonDidClicked(_:)), for: .touchUpInside)
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tableView.delegate = self
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viewModel.setupDiffableDataSource(
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for: tableView,
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dependency: self,
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pickServerCategoriesCellDelegate: self,
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pickServerSearchCellDelegate: self,
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pickServerCellDelegate: self
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)
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viewModel
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.selectedServer
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.map { $0 != nil }
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.assign(to: \.isEnabled, on: nextStepButton)
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.store(in: &disposeBag)
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Publishers.Merge(
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viewModel.error,
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authenticationViewModel.error
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)
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.compactMap { $0 }
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.receive(on: DispatchQueue.main)
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.sink { [weak self] error in
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guard let self = self else { return }
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let alertController = UIAlertController(for: error, title: "Error", preferredStyle: .alert)
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let okAction = UIAlertAction(title: L10n.Common.Controls.Actions.ok, style: .default, handler: nil)
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alertController.addAction(okAction)
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self.coordinator.present(
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scene: .alertController(alertController: alertController),
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from: nil,
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transition: .alertController(animated: true, completion: nil)
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)
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}
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.store(in: &disposeBag)
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authenticationViewModel
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.authenticated
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.flatMap { [weak self] (domain, user) -> AnyPublisher<Result<Bool, Error>, Never> in
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guard let self = self else { return Just(.success(false)).eraseToAnyPublisher() }
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return self.context.authenticationService.activeMastodonUser(domain: domain, userID: user.id)
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}
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.receive(on: DispatchQueue.main)
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.sink { [weak self] result in
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guard let self = self else { return }
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switch result {
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case .failure(let error):
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assertionFailure(error.localizedDescription)
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case .success(let isActived):
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assert(isActived)
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// self.dismiss(animated: true, completion: nil)
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self.coordinator.setup()
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}
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}
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.store(in: &disposeBag)
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authenticationViewModel.isAuthenticating
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.receive(on: DispatchQueue.main)
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.sink { [weak self] isAuthenticating in
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guard let self = self else { return }
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isAuthenticating ? self.nextStepButton.showLoading() : self.nextStepButton.stopLoading()
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}
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.store(in: &disposeBag)
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viewModel.emptyStateViewState
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.receive(on: RunLoop.main)
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.sink { [weak self] state in
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guard let self = self else { return }
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switch state {
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case .none:
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UIView.animate(withDuration: 0.3) {
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self.emptyStateView.alpha = 0
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}
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case .loading:
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self.emptyStateView.alpha = 1
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self.emptyStateView.networkIndicatorImageView.isHidden = true
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self.emptyStateView.activityIndicatorView.startAnimating()
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self.emptyStateView.infoLabel.isHidden = false
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self.emptyStateView.infoLabel.text = L10n.Scene.ServerPicker.EmptyState.findingServers
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self.emptyStateView.infoLabel.textAlignment = self.traitCollection.layoutDirection == .rightToLeft ? .right : .left
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case .badNetwork:
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self.emptyStateView.alpha = 1
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self.emptyStateView.networkIndicatorImageView.isHidden = false
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self.emptyStateView.activityIndicatorView.stopAnimating()
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self.emptyStateView.infoLabel.isHidden = false
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self.emptyStateView.infoLabel.text = L10n.Scene.ServerPicker.EmptyState.badNetwork
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self.emptyStateView.infoLabel.textAlignment = .center
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}
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}
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.store(in: &disposeBag)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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viewModel.viewWillAppear.send()
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}
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override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
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super.traitCollectionDidChange(previousTraitCollection)
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setupNavigationBarAppearance()
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updateEmptyStateViewLayout()
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configureTitleLabel()
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configureMargin()
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}
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}
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extension MastodonPickServerViewController {
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private func configureTitleLabel() {
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guard UIDevice.current.userInterfaceIdiom == .pad else {
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return
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}
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switch traitCollection.horizontalSizeClass {
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case .regular:
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navigationItem.largeTitleDisplayMode = .always
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navigationItem.title = L10n.Scene.ServerPicker.title.replacingOccurrences(of: "\n", with: " ")
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default:
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navigationItem.largeTitleDisplayMode = .never
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navigationItem.title = nil
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}
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}
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}
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extension MastodonPickServerViewController {
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@objc
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private func nextStepButtonDidClicked(_ sender: UIButton) {
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switch viewModel.mode {
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case .signIn:
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doSignIn()
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case .signUp:
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doSignUp()
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}
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}
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private func doSignIn() {
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guard let server = viewModel.selectedServer.value else { return }
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authenticationViewModel.isAuthenticating.send(true)
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context.apiService.createApplication(domain: server.domain)
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.tryMap { response -> AuthenticationViewModel.AuthenticateInfo in
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let application = response.value
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guard let info = AuthenticationViewModel.AuthenticateInfo(
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domain: server.domain,
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application: application,
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redirectURI: response.value.redirectURI ?? MastodonAuthenticationController.callbackURL
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) else {
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throw APIService.APIError.explicit(.badResponse)
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}
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return info
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}
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.receive(on: DispatchQueue.main)
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.sink { [weak self] completion in
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guard let self = self else { return }
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self.authenticationViewModel.isAuthenticating.send(false)
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switch completion {
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case .failure(let error):
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: sign in fail: %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription)
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self.viewModel.error.send(error)
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case .finished:
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break
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}
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} receiveValue: { [weak self] info in
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guard let self = self else { return }
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let authenticationController = MastodonAuthenticationController(
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context: self.context,
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authenticateURL: info.authorizeURL
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)
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self.mastodonAuthenticationController = authenticationController
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authenticationController.authenticationSession?.presentationContextProvider = self
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authenticationController.authenticationSession?.start()
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self.authenticationViewModel.authenticate(
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info: info,
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pinCodePublisher: authenticationController.pinCodePublisher
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)
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}
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.store(in: &disposeBag)
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}
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private func doSignUp() {
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
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guard let server = viewModel.selectedServer.value else { return }
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authenticationViewModel.isAuthenticating.send(true)
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context.apiService.instance(domain: server.domain)
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.compactMap { [weak self] response -> AnyPublisher<MastodonPickServerViewModel.SignUpResponseFirst, Error>? in
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guard let self = self else { return nil }
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guard response.value.registrations != false else {
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return Fail(error: AuthenticationViewModel.AuthenticationError.registrationClosed).eraseToAnyPublisher()
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}
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return self.context.apiService.createApplication(domain: server.domain)
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.map { MastodonPickServerViewModel.SignUpResponseFirst(instance: response, application: $0) }
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.eraseToAnyPublisher()
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}
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.switchToLatest()
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.tryMap { response -> MastodonPickServerViewModel.SignUpResponseSecond in
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let application = response.application.value
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guard let authenticateInfo = AuthenticationViewModel.AuthenticateInfo(
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domain: server.domain,
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application: application
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) else {
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throw APIService.APIError.explicit(.badResponse)
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}
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return MastodonPickServerViewModel.SignUpResponseSecond(instance: response.instance, authenticateInfo: authenticateInfo)
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}
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.compactMap { [weak self] response -> AnyPublisher<MastodonPickServerViewModel.SignUpResponseThird, Error>? in
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guard let self = self else { return nil }
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let instance = response.instance
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let authenticateInfo = response.authenticateInfo
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return self.context.apiService.applicationAccessToken(
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domain: server.domain,
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clientID: authenticateInfo.clientID,
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clientSecret: authenticateInfo.clientSecret,
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redirectURI: authenticateInfo.redirectURI
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)
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.map { MastodonPickServerViewModel.SignUpResponseThird(instance: instance, authenticateInfo: authenticateInfo, applicationToken: $0) }
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.eraseToAnyPublisher()
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}
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.switchToLatest()
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.receive(on: DispatchQueue.main)
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.sink { [weak self] completion in
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guard let self = self else { return }
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self.authenticationViewModel.isAuthenticating.send(false)
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switch completion {
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case .failure(let error):
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self.viewModel.error.send(error)
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case .finished:
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break
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}
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} receiveValue: { [weak self] response in
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guard let self = self else { return }
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if let rules = response.instance.value.rules, !rules.isEmpty {
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// show server rules before register
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let mastodonServerRulesViewModel = MastodonServerRulesViewModel(
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domain: server.domain,
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authenticateInfo: response.authenticateInfo,
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rules: rules,
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instance: response.instance.value,
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applicationToken: response.applicationToken.value
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)
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self.coordinator.present(scene: .mastodonServerRules(viewModel: mastodonServerRulesViewModel), from: self, transition: .show)
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} else {
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let mastodonRegisterViewModel = MastodonRegisterViewModel(
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domain: server.domain,
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context: self.context,
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authenticateInfo: response.authenticateInfo,
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instance: response.instance.value,
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applicationToken: response.applicationToken.value
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)
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self.coordinator.present(scene: .mastodonRegister(viewModel: mastodonRegisterViewModel), from: nil, transition: .show)
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}
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}
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.store(in: &disposeBag)
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}
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}
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// MARK: - UITableViewDelegate
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extension MastodonPickServerViewController: UITableViewDelegate {
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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guard scrollView === tableView else { return }
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let offsetY = scrollView.contentOffset.y + scrollView.safeAreaInsets.top
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if offsetY < 0 {
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tableViewTopPaddingViewHeightLayoutConstraint.constant = abs(offsetY)
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} else {
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tableViewTopPaddingViewHeightLayoutConstraint.constant = 0
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}
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}
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func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
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guard let diffableDataSource = viewModel.diffableDataSource else { return nil }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return nil }
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guard case .server = item else { return nil }
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if tableView.indexPathForSelectedRow == indexPath {
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tableView.deselectRow(at: indexPath, animated: false)
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viewModel.selectedServer.send(nil)
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return nil
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}
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return indexPath
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}
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
|
|
guard let diffableDataSource = viewModel.diffableDataSource else { return }
|
|
guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
|
|
guard case let .server(server, _) = item else { return }
|
|
tableView.selectRow(at: indexPath, animated: false, scrollPosition: .none)
|
|
viewModel.selectedServer.send(server)
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
|
|
tableView.deselectRow(at: indexPath, animated: false)
|
|
viewModel.selectedServer.send(nil)
|
|
}
|
|
|
|
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
|
|
guard let diffableDataSource = viewModel.diffableDataSource else { return }
|
|
guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
|
|
|
|
switch item {
|
|
case .categoryPicker:
|
|
guard let cell = cell as? PickServerCategoriesCell else { return }
|
|
guard let diffableDataSource = cell.diffableDataSource else { return }
|
|
let snapshot = diffableDataSource.snapshot()
|
|
|
|
let item = viewModel.selectCategoryItem.value
|
|
guard let section = snapshot.indexOfSection(.main),
|
|
let row = snapshot.indexOfItem(item) else { return }
|
|
cell.collectionView.selectItem(at: IndexPath(item: row, section: section), animated: false, scrollPosition: .centeredHorizontally)
|
|
case .search:
|
|
guard let cell = cell as? PickServerSearchCell else { return }
|
|
cell.searchTextField.text = viewModel.searchText.value
|
|
default:
|
|
break
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
extension MastodonPickServerViewController {
|
|
private func updateEmptyStateViewLayout() {
|
|
guard let diffableDataSource = self.viewModel.diffableDataSource else { return }
|
|
guard let indexPath = diffableDataSource.indexPath(for: .search) else { return }
|
|
let rectInTableView = tableView.rectForRow(at: indexPath)
|
|
|
|
emptyStateView.topPaddingViewTopLayoutConstraint.constant = rectInTableView.maxY
|
|
|
|
switch traitCollection.horizontalSizeClass {
|
|
case .regular:
|
|
emptyStateViewLeadingLayoutConstraint.constant = MastodonPickServerViewController.viewEdgeMargin
|
|
emptyStateViewTrailingLayoutConstraint.constant = MastodonPickServerViewController.viewEdgeMargin
|
|
default:
|
|
let margin = tableView.layoutMarginsGuide.layoutFrame.origin.x
|
|
emptyStateViewLeadingLayoutConstraint.constant = margin
|
|
emptyStateViewTrailingLayoutConstraint.constant = margin
|
|
}
|
|
}
|
|
|
|
private func configureMargin() {
|
|
switch traitCollection.horizontalSizeClass {
|
|
case .regular:
|
|
let margin = MastodonPickServerViewController.viewEdgeMargin
|
|
buttonContainer.layoutMargins = UIEdgeInsets(top: 0, left: margin, bottom: 0, right: margin)
|
|
default:
|
|
buttonContainer.layoutMargins = .zero
|
|
}
|
|
}
|
|
}
|
|
|
|
// MARK: - PickServerCategoriesCellDelegate
|
|
extension MastodonPickServerViewController: PickServerCategoriesCellDelegate {
|
|
func pickServerCategoriesCell(_ cell: PickServerCategoriesCell, collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
|
|
guard let diffableDataSource = cell.diffableDataSource else { return }
|
|
let item = diffableDataSource.itemIdentifier(for: indexPath)
|
|
viewModel.selectCategoryItem.value = item ?? .all
|
|
}
|
|
}
|
|
|
|
// MARK: - PickServerSearchCellDelegate
|
|
extension MastodonPickServerViewController: PickServerSearchCellDelegate {
|
|
func pickServerSearchCell(_ cell: PickServerSearchCell, searchTextDidChange searchText: String?) {
|
|
viewModel.searchText.send(searchText ?? "")
|
|
}
|
|
}
|
|
|
|
// MARK: - PickServerCellDelegate
|
|
extension MastodonPickServerViewController: PickServerCellDelegate {
|
|
func pickServerCell(_ cell: PickServerCell, expandButtonPressed button: UIButton) {
|
|
guard let diffableDataSource = viewModel.diffableDataSource else { return }
|
|
guard let indexPath = tableView.indexPath(for: cell) else { return }
|
|
guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
|
|
guard case let .server(_, attribute) = item else { return }
|
|
|
|
attribute.isExpand.toggle()
|
|
tableView.beginUpdates()
|
|
cell.updateExpandMode(mode: attribute.isExpand ? .expand : .collapse)
|
|
tableView.endUpdates()
|
|
|
|
// expand attribute change do not needs apply snapshot to diffable data source
|
|
// but should I block the viewModel data binding during tableView.beginUpdates/endUpdates?
|
|
}
|
|
}
|
|
|
|
// MARK: - OnboardingViewControllerAppearance
|
|
extension MastodonPickServerViewController: OnboardingViewControllerAppearance { }
|
|
|
|
// MARK: - ASWebAuthenticationPresentationContextProviding
|
|
extension MastodonPickServerViewController: ASWebAuthenticationPresentationContextProviding {
|
|
func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
|
|
return view.window!
|
|
}
|
|
}
|