mastodon-ios/Mastodon/Scene/HomeTimeline/HomeTimelineViewController....

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