615 lines
26 KiB
Swift
615 lines
26 KiB
Swift
//
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// HomeTimelineViewController.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/2/5.
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//
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import os.log
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import UIKit
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import AVKit
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import Combine
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import CoreData
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import CoreDataStack
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import GameplayKit
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import MastodonSDK
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import AlamofireImage
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import StoreKit
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import MastodonAsset
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import MastodonCore
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import MastodonUI
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import MastodonLocalization
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final class HomeTimelineViewController: UIViewController, NeedsDependency, MediaPreviewableViewController {
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let logger = Logger(subsystem: "HomeTimelineViewController", category: "UI")
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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 disposeBag = Set<AnyCancellable>()
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private(set) lazy var viewModel = HomeTimelineViewModel(context: context)
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let mediaPreviewTransitionController = MediaPreviewTransitionController()
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let friendsAssetImageView: UIImageView = {
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let imageView = UIImageView()
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imageView.image = Asset.Asset.friends.image
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imageView.contentMode = .scaleAspectFill
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return imageView
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}()
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lazy var emptyView: UIStackView = {
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let emptyView = UIStackView()
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emptyView.axis = .vertical
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emptyView.distribution = .fill
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emptyView.isLayoutMarginsRelativeArrangement = true
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return emptyView
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}()
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let titleView = HomeTimelineNavigationBarTitleView()
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let settingBarButtonItem: UIBarButtonItem = {
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let barButtonItem = UIBarButtonItem()
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barButtonItem.tintColor = ThemeService.tintColor
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barButtonItem.image = Asset.ObjectsAndTools.gear.image.withRenderingMode(.alwaysTemplate)
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barButtonItem.accessibilityLabel = L10n.Common.Controls.Actions.settings
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return barButtonItem
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}()
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let tableView: UITableView = {
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let tableView = ControlContainableTableView()
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tableView.register(StatusTableViewCell.self, forCellReuseIdentifier: String(describing: StatusTableViewCell.self))
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tableView.register(TimelineMiddleLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self))
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tableView.register(TimelineBottomLoaderTableViewCell.self, forCellReuseIdentifier: String(describing: TimelineBottomLoaderTableViewCell.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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return tableView
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}()
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let publishProgressView: UIProgressView = {
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let progressView = UIProgressView(progressViewStyle: .bar)
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progressView.alpha = 0
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return progressView
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}()
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let refreshControl = UIRefreshControl()
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deinit {
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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 HomeTimelineViewController {
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override func viewDidLoad() {
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super.viewDidLoad()
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title = L10n.Scene.HomeTimeline.title
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view.backgroundColor = ThemeService.shared.currentTheme.value.secondarySystemBackgroundColor
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ThemeService.shared.currentTheme
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.receive(on: RunLoop.main)
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.sink { [weak self] theme in
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guard let self = self else { return }
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self.view.backgroundColor = theme.secondarySystemBackgroundColor
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}
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.store(in: &disposeBag)
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viewModel.$displaySettingBarButtonItem
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.receive(on: DispatchQueue.main)
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.sink { [weak self] displaySettingBarButtonItem in
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guard let self = self else { return }
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#if DEBUG
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// display debug menu
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self.navigationItem.rightBarButtonItem = {
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let barButtonItem = UIBarButtonItem()
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barButtonItem.image = UIImage(systemName: "ellipsis.circle")
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barButtonItem.menu = self.debugMenu
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return barButtonItem
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}()
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#else
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self.navigationItem.rightBarButtonItem = displaySettingBarButtonItem ? self.settingBarButtonItem : nil
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#endif
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}
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.store(in: &disposeBag)
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#if DEBUG
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// long press to trigger debug menu
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settingBarButtonItem.menu = debugMenu
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#else
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settingBarButtonItem.target = self
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settingBarButtonItem.action = #selector(HomeTimelineViewController.settingBarButtonItemPressed(_:))
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#endif
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#if SNAPSHOT
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titleView.logoButton.menu = self.debugMenu
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titleView.button.menu = self.debugMenu
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#endif
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navigationItem.titleView = titleView
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titleView.delegate = self
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viewModel.homeTimelineNavigationBarTitleViewModel.state
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.removeDuplicates()
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.receive(on: DispatchQueue.main)
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.sink { [weak self] state in
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guard let self = self else { return }
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self.titleView.configure(state: state)
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}
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.store(in: &disposeBag)
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viewModel.homeTimelineNavigationBarTitleViewModel.state
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.removeDuplicates()
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.filter { $0 == .publishedButton }
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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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guard UserDefaults.shared.lastVersionPromptedForReview == nil else { return }
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guard UserDefaults.shared.processCompletedCount > 3 else { return }
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guard let windowScene = self.view.window?.windowScene else { return }
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let version = UIApplication.appVersion()
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UserDefaults.shared.lastVersionPromptedForReview = version
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SKStoreReviewController.requestReview(in: windowScene)
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}
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.store(in: &disposeBag)
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tableView.refreshControl = refreshControl
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refreshControl.addTarget(self, action: #selector(HomeTimelineViewController.refreshControlValueChanged(_:)), for: .valueChanged)
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tableView.translatesAutoresizingMaskIntoConstraints = false
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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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tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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])
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publishProgressView.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(publishProgressView)
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NSLayoutConstraint.activate([
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publishProgressView.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor),
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publishProgressView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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publishProgressView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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])
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viewModel.tableView = tableView
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tableView.delegate = self
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viewModel.setupDiffableDataSource(
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tableView: tableView,
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statusTableViewCellDelegate: self,
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timelineMiddleLoaderTableViewCellDelegate: self
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)
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// setup batch fetch
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viewModel.listBatchFetchViewModel.setup(scrollView: tableView)
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viewModel.listBatchFetchViewModel.shouldFetch
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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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guard self.view.window != nil else { return }
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self.viewModel.loadOldestStateMachine.enter(HomeTimelineViewModel.LoadOldestState.Loading.self)
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}
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.store(in: &disposeBag)
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// bind refresh control
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viewModel.didLoadLatest
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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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UIView.animate(withDuration: 0.5) { [weak self] in
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guard let self = self else { return }
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self.refreshControl.endRefreshing()
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} completion: { _ in }
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}
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.store(in: &disposeBag)
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viewModel.homeTimelineNavigationBarTitleViewModel.publishingProgress
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.receive(on: DispatchQueue.main)
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.sink { [weak self] progress in
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guard let self = self else { return }
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guard progress > 0 else {
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let dismissAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .easeInOut)
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dismissAnimator.addAnimations {
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self.publishProgressView.alpha = 0
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}
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dismissAnimator.addCompletion { _ in
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self.publishProgressView.setProgress(0, animated: false)
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}
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dismissAnimator.startAnimation()
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return
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}
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if self.publishProgressView.alpha == 0 {
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let progressAnimator = UIViewPropertyAnimator(duration: 0.1, curve: .easeOut)
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progressAnimator.addAnimations {
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self.publishProgressView.alpha = 1
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}
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progressAnimator.startAnimation()
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}
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self.publishProgressView.setProgress(progress, animated: true)
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}
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.store(in: &disposeBag)
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viewModel.timelineIsEmpty
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.receive(on: DispatchQueue.main)
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.sink { [weak self] isEmpty in
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if isEmpty {
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self?.showEmptyView()
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} else {
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self?.emptyView.removeFromSuperview()
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}
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}
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.store(in: &disposeBag)
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NotificationCenter.default
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.publisher(for: .statusBarTapped, object: nil)
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.throttle(for: 0.5, scheduler: DispatchQueue.main, latest: false)
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.sink { [weak self] notification in
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guard let self = self else { return }
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guard let _ = self.view.window else { return } // displaying
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// https://developer.limneos.net/index.php?ios=13.1.3&framework=UIKitCore.framework&header=UIStatusBarTapAction.h
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guard let action = notification.object as AnyObject?,
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let xPosition = action.value(forKey: "xPosition") as? Double
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else { return }
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let viewFrameInWindow = self.view.convert(self.view.frame, to: nil)
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guard xPosition >= viewFrameInWindow.minX && xPosition <= viewFrameInWindow.maxX else { return }
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// works on iOS 14
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self.logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): receive notification \(xPosition)")
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// check if scroll to top
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guard self.shouldRestoreScrollPosition() else { return }
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self.restorePositionWhenScrollToTop()
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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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refreshControl.endRefreshing()
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tableView.deselectRow(with: transitionCoordinator, animated: animated)
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// needs trigger manually after onboarding dismiss
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setNeedsStatusBarAppearanceUpdate()
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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viewModel.viewDidAppear.send()
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if let timestamp = viewModel.lastAutomaticFetchTimestamp {
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let now = Date()
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if now.timeIntervalSince(timestamp) > 60 {
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self.viewModel.lastAutomaticFetchTimestamp = now
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self.viewModel.homeTimelineNeedRefresh.send()
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} else {
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// do nothing
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}
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} else {
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self.viewModel.homeTimelineNeedRefresh.send()
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}
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}
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override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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super.viewWillTransition(to: size, with: coordinator)
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coordinator.animate { _ in
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// do nothing
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} completion: { _ in
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// fix AutoLayout cell height not update after rotate issue
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self.viewModel.cellFrameCache.removeAllObjects()
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self.tableView.reloadData()
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}
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}
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}
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extension HomeTimelineViewController {
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func showEmptyView() {
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if emptyView.superview != nil {
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return
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}
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view.addSubview(emptyView)
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emptyView.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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emptyView.topAnchor.constraint(equalTo: view.layoutMarginsGuide.topAnchor),
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emptyView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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emptyView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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emptyView.bottomAnchor.constraint(equalTo: view.layoutMarginsGuide.bottomAnchor)
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])
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if emptyView.arrangedSubviews.count > 0 {
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return
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}
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let findPeopleButton: PrimaryActionButton = {
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let button = PrimaryActionButton()
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button.setTitle(L10n.Common.Controls.Actions.findPeople, for: .normal)
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button.addTarget(self, action: #selector(HomeTimelineViewController.findPeopleButtonPressed(_:)), for: .touchUpInside)
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return button
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}()
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NSLayoutConstraint.activate([
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findPeopleButton.heightAnchor.constraint(equalToConstant: 46)
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])
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let manuallySearchButton: HighlightDimmableButton = {
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let button = HighlightDimmableButton()
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button.titleLabel?.font = UIFontMetrics(forTextStyle: .headline).scaledFont(for: .systemFont(ofSize: 15, weight: .semibold))
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button.setTitle(L10n.Common.Controls.Actions.manuallySearch, for: .normal)
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button.setTitleColor(Asset.Colors.brand.color, for: .normal)
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button.addTarget(self, action: #selector(HomeTimelineViewController.manuallySearchButtonPressed(_:)), for: .touchUpInside)
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return button
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}()
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let topPaddingView = UIView()
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let bottomPaddingView = UIView()
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emptyView.addArrangedSubview(topPaddingView)
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emptyView.addArrangedSubview(friendsAssetImageView)
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emptyView.addArrangedSubview(bottomPaddingView)
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topPaddingView.translatesAutoresizingMaskIntoConstraints = false
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bottomPaddingView.translatesAutoresizingMaskIntoConstraints = false
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NSLayoutConstraint.activate([
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topPaddingView.heightAnchor.constraint(equalTo: bottomPaddingView.heightAnchor, multiplier: 0.8),
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])
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let buttonContainerStackView = UIStackView()
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emptyView.addArrangedSubview(buttonContainerStackView)
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buttonContainerStackView.isLayoutMarginsRelativeArrangement = true
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buttonContainerStackView.layoutMargins = UIEdgeInsets(top: 0, left: 32, bottom: 22, right: 32)
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buttonContainerStackView.axis = .vertical
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buttonContainerStackView.spacing = 17
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buttonContainerStackView.addArrangedSubview(findPeopleButton)
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buttonContainerStackView.addArrangedSubview(manuallySearchButton)
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}
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}
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extension HomeTimelineViewController {
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@objc private func findPeopleButtonPressed(_ sender: PrimaryActionButton) {
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let suggestionAccountViewModel = SuggestionAccountViewModel(context: context)
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suggestionAccountViewModel.delegate = viewModel
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coordinator.present(
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scene: .suggestionAccount(viewModel: suggestionAccountViewModel),
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from: self,
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transition: .modal(animated: true, completion: nil)
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)
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}
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@objc private func manuallySearchButtonPressed(_ sender: UIButton) {
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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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let searchDetailViewModel = SearchDetailViewModel()
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coordinator.present(scene: .searchDetail(viewModel: searchDetailViewModel), from: self, transition: .modal(animated: true, completion: nil))
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}
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@objc private func settingBarButtonItemPressed(_ sender: UIBarButtonItem) {
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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 setting = context.settingService.currentSetting.value else { return }
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let settingsViewModel = SettingsViewModel(context: context, setting: setting)
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coordinator.present(scene: .settings(viewModel: settingsViewModel), from: self, transition: .modal(animated: true, completion: nil))
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}
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@objc private func refreshControlValueChanged(_ sender: UIRefreshControl) {
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guard viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self) else {
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sender.endRefreshing()
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return
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}
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}
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@objc func signOutAction(_ sender: UIAction) {
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guard let authenticationBox = context.authenticationService.activeMastodonAuthenticationBox.value else {
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return
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}
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Task { @MainActor in
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try await context.authenticationService.signOutMastodonUser(authenticationBox: authenticationBox)
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self.coordinator.setup()
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self.coordinator.setupOnboardingIfNeeds(animated: true)
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}
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}
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}
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// MARK: - UIScrollViewDelegate
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extension HomeTimelineViewController {
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func scrollViewDidScroll(_ scrollView: UIScrollView) {
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switch scrollView {
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case tableView:
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viewModel.homeTimelineNavigationBarTitleViewModel.handleScrollViewDidScroll(scrollView)
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default:
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break
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}
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}
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func scrollViewShouldScrollToTop(_ scrollView: UIScrollView) -> Bool {
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switch scrollView {
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case tableView:
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let indexPath = IndexPath(row: 0, section: 0)
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guard viewModel.diffableDataSource?.itemIdentifier(for: indexPath) != nil else {
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return true
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}
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// save position
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savePositionBeforeScrollToTop()
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// override by custom scrollToRow
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tableView.scrollToRow(at: indexPath, at: .top, animated: true)
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return false
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default:
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assertionFailure()
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return true
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}
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}
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private func savePositionBeforeScrollToTop() {
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// check save action interval
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// should not fast than 0.5s to prevent save when scrollToTop on-flying
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if let record = viewModel.scrollPositionRecord {
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let now = Date()
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guard now.timeIntervalSince(record.timestamp) > 0.5 else {
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// skip this save action
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return
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}
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}
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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guard let anchorIndexPaths = tableView.indexPathsForVisibleRows?.sorted() else { return }
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guard !anchorIndexPaths.isEmpty else { return }
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let anchorIndexPath = anchorIndexPaths[anchorIndexPaths.count / 2]
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guard let anchorItem = diffableDataSource.itemIdentifier(for: anchorIndexPath) else { return }
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let offset: CGFloat = {
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guard let anchorCell = tableView.cellForRow(at: anchorIndexPath) else { return 0 }
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let cellFrameInView = tableView.convert(anchorCell.frame, to: view)
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return cellFrameInView.origin.y
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}()
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logger.log(level: .debug, "\((#file as NSString).lastPathComponent, privacy: .public)[\(#line, privacy: .public)], \(#function, privacy: .public): save position record for \(anchorIndexPath) with offset: \(offset)")
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viewModel.scrollPositionRecord = HomeTimelineViewModel.ScrollPositionRecord(
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item: anchorItem,
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offset: offset,
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timestamp: Date()
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)
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}
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private func shouldRestoreScrollPosition() -> Bool {
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// check if scroll to top
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guard self.tableView.safeAreaInsets.top > 0 else { return false }
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let zeroOffset = -self.tableView.safeAreaInsets.top
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return abs(self.tableView.contentOffset.y - zeroOffset) < 2.0
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}
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private func restorePositionWhenScrollToTop() {
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guard let diffableDataSource = self.viewModel.diffableDataSource else { return }
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guard let record = self.viewModel.scrollPositionRecord,
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let indexPath = diffableDataSource.indexPath(for: record.item)
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else { return }
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tableView.scrollToRow(at: indexPath, at: .middle, animated: true)
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viewModel.scrollPositionRecord = nil
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}
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}
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// MARK: - UITableViewDelegate
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extension HomeTimelineViewController: UITableViewDelegate, AutoGenerateTableViewDelegate {
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// sourcery:inline:HomeTimelineViewController.AutoGenerateTableViewDelegate
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// Generated using Sourcery
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// DO NOT EDIT
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func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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aspectTableView(tableView, didSelectRowAt: indexPath)
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}
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func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
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return aspectTableView(tableView, contextMenuConfigurationForRowAt: indexPath, point: point)
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}
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func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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return aspectTableView(tableView, previewForHighlightingContextMenuWithConfiguration: configuration)
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}
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func tableView(_ tableView: UITableView, previewForDismissingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
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return aspectTableView(tableView, previewForDismissingContextMenuWithConfiguration: configuration)
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}
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func tableView(_ tableView: UITableView, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
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aspectTableView(tableView, willPerformPreviewActionForMenuWith: configuration, animator: animator)
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}
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// sourcery:end
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}
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// MARK: - TimelineMiddleLoaderTableViewCellDelegate
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extension HomeTimelineViewController: TimelineMiddleLoaderTableViewCellDelegate {
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func timelineMiddleLoaderTableViewCell(_ cell: TimelineMiddleLoaderTableViewCell, loadMoreButtonDidPressed button: UIButton) {
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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guard let indexPath = tableView.indexPath(for: cell) else { return }
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guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return }
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Task {
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await viewModel.loadMore(item: item)
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}
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}
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}
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// MARK: - ScrollViewContainer
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extension HomeTimelineViewController: ScrollViewContainer {
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var scrollView: UIScrollView { return tableView }
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func scrollToTop(animated: Bool) {
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if scrollView.contentOffset.y < scrollView.frame.height,
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viewModel.loadLatestStateMachine.canEnterState(HomeTimelineViewModel.LoadLatestState.Loading.self),
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(scrollView.contentOffset.y + scrollView.adjustedContentInset.top) == 0.0,
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!refreshControl.isRefreshing {
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scrollView.scrollRectToVisible(CGRect(origin: CGPoint(x: 0, y: -refreshControl.frame.height), size: CGSize(width: 1, height: 1)), animated: animated)
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DispatchQueue.main.async { [weak self] in
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guard let self = self else { return }
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self.refreshControl.beginRefreshing()
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self.refreshControl.sendActions(for: .valueChanged)
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}
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} else {
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let indexPath = IndexPath(row: 0, section: 0)
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guard viewModel.diffableDataSource?.itemIdentifier(for: indexPath) != nil else { return }
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// save position
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savePositionBeforeScrollToTop()
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tableView.scrollToRow(at: indexPath, at: .top, animated: true)
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}
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}
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}
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// MARK: - StatusTableViewCellDelegate
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extension HomeTimelineViewController: StatusTableViewCellDelegate { }
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// MARK: - HomeTimelineNavigationBarTitleViewDelegate
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extension HomeTimelineViewController: HomeTimelineNavigationBarTitleViewDelegate {
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func homeTimelineNavigationBarTitleView(_ titleView: HomeTimelineNavigationBarTitleView, logoButtonDidPressed sender: UIButton) {
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if shouldRestoreScrollPosition() {
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restorePositionWhenScrollToTop()
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} else {
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savePositionBeforeScrollToTop()
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scrollToTop(animated: true)
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}
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}
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func homeTimelineNavigationBarTitleView(_ titleView: HomeTimelineNavigationBarTitleView, buttonDidPressed sender: UIButton) {
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switch titleView.state {
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case .newPostButton:
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guard let diffableDataSource = viewModel.diffableDataSource else { return }
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let indexPath = IndexPath(row: 0, section: 0)
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guard diffableDataSource.itemIdentifier(for: indexPath) != nil else { return }
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savePositionBeforeScrollToTop()
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tableView.scrollToRow(at: indexPath, at: .top, animated: true)
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case .offlineButton:
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// TODO: retry
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break
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case .publishedButton:
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break
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default:
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break
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}
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}
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}
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extension HomeTimelineViewController {
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override var keyCommands: [UIKeyCommand]? {
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return navigationKeyCommands + statusNavigationKeyCommands
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}
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}
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// MARK: - StatusTableViewControllerNavigateable
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extension HomeTimelineViewController: StatusTableViewControllerNavigateable {
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@objc func navigateKeyCommandHandlerRelay(_ sender: UIKeyCommand) {
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navigateKeyCommandHandler(sender)
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}
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@objc func statusKeyCommandHandlerRelay(_ sender: UIKeyCommand) {
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statusKeyCommandHandler(sender)
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}
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}
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