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

568 lines
24 KiB
Swift

//
// 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
final class HomeTimelineViewController: UIViewController, NeedsDependency, MediaPreviewableViewController {
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()
lazy var emptyView: UIStackView = {
let emptyView = UIStackView()
emptyView.axis = .vertical
emptyView.distribution = .fill
emptyView.layoutMargins = UIEdgeInsets(top: 0, left: 20, bottom: 54, right: 20)
emptyView.isLayoutMarginsRelativeArrangement = true
return emptyView
}()
let titleView = HomeTimelineNavigationBarTitleView()
let settingBarButtonItem: UIBarButtonItem = {
let barButtonItem = UIBarButtonItem()
barButtonItem.tintColor = Asset.Colors.brandBlue.color
barButtonItem.image = UIImage(systemName: "gear")?.withRenderingMode(.alwaysTemplate)
return barButtonItem
}()
let composeBarButtonItem: UIBarButtonItem = {
let barButtonItem = UIBarButtonItem()
barButtonItem.tintColor = Asset.Colors.brandBlue.color
barButtonItem.image = UIImage(systemName: "square.and.pencil")?.withRenderingMode(.alwaysTemplate)
return barButtonItem
}()
let tableView: UITableView = {
let tableView = ControlContainableTableView()
tableView.register(StatusTableViewCell.self, forCellReuseIdentifier: String(describing: StatusTableViewCell.self))
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
}()
let refreshControl = UIRefreshControl()
deinit {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s:", ((#file as NSString).lastPathComponent), #line, #function)
}
}
extension HomeTimelineViewController {
override func viewDidLoad() {
super.viewDidLoad()
title = L10n.Scene.HomeTimeline.title
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)
navigationItem.leftBarButtonItem = settingBarButtonItem
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)
#if DEBUG
// long press to trigger debug menu
settingBarButtonItem.menu = debugMenu
#else
settingBarButtonItem.target = self
settingBarButtonItem.action = #selector(HomeTimelineViewController.settingBarButtonItemPressed(_:))
#endif
navigationItem.rightBarButtonItem = composeBarButtonItem
composeBarButtonItem.target = self
composeBarButtonItem.action = #selector(HomeTimelineViewController.composeBarButtonItemPressed(_:))
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),
])
viewModel.tableView = tableView
viewModel.contentOffsetAdjustableTimelineViewControllerDelegate = self
tableView.delegate = self
tableView.prefetchDataSource = self
viewModel.setupDiffableDataSource(
for: tableView,
dependency: self,
statusTableViewCellDelegate: self,
timelineMiddleLoaderTableViewCellDelegate: self
)
// bind refresh control
viewModel.isFetchingLatestTimeline
.receive(on: DispatchQueue.main)
.sink { [weak self] isFetching in
guard let self = self else { return }
if !isFetching {
UIView.animate(withDuration: 0.5) { [weak self] in
guard let self = self else { return }
self.refreshControl.endRefreshing()
} completion: { _ in }
}
}
.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)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
aspectViewWillAppear(animated)
// needs trigger manually after onboarding dismiss
setNeedsStatusBarAppearanceUpdate()
if (viewModel.fetchedResultsController.fetchedObjects ?? []).isEmpty {
viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self)
}
}
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
viewModel.viewDidAppear.send()
DispatchQueue.main.async { [weak self] in
guard let self = self else { return }
if (self.viewModel.fetchedResultsController.fetchedObjects ?? []).count == 0 {
self.viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self)
}
}
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
aspectViewDidDisappear(animated)
}
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 {
func showEmptyView() {
if emptyView.superview != nil {
return
}
view.addSubview(emptyView)
emptyView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
emptyView.leadingAnchor.constraint(equalTo: view.readableContentGuide.leadingAnchor),
emptyView.trailingAnchor.constraint(equalTo: view.readableContentGuide.trailingAnchor),
emptyView.bottomAnchor.constraint(equalTo: view.readableContentGuide.bottomAnchor)
])
if emptyView.arrangedSubviews.count > 0 {
return
}
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
}()
emptyView.addArrangedSubview(findPeopleButton)
emptyView.setCustomSpacing(17, after: findPeopleButton)
emptyView.addArrangedSubview(manuallySearchButton)
}
}
extension HomeTimelineViewController {
@objc private func findPeopleButtonPressed(_ sender: PrimaryActionButton) {
let viewModel = SuggestionAccountViewModel(context: context)
viewModel.delegate = self.viewModel
coordinator.present(scene: .suggestionAccount(viewModel: viewModel), from: self, transition: .modal(animated: true, completion: nil))
}
@objc private func manuallySearchButtonPressed(_ sender: UIButton) {
coordinator.switchToTabBar(tab: .search)
}
@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))
}
@objc private func composeBarButtonItemPressed(_ sender: UIBarButtonItem) {
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
let composeViewModel = ComposeViewModel(context: context, composeKind: .post)
coordinator.present(scene: .compose(viewModel: composeViewModel), from: self, transition: .modal(animated: true, completion: nil))
}
@objc private func refreshControlValueChanged(_ sender: UIRefreshControl) {
guard viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self) else {
sender.endRefreshing()
return
}
}
@objc func signOutAction(_ sender: UIAction) {
guard let activeMastodonAuthenticationBox = context.authenticationService.activeMastodonAuthenticationBox.value else {
return
}
context.authenticationService.signOutMastodonUser(
domain: activeMastodonAuthenticationBox.domain,
userID: activeMastodonAuthenticationBox.userID
)
.receive(on: DispatchQueue.main)
.sink { [weak self] result in
guard let self = self else { return }
switch result {
case .failure(let error):
assertionFailure(error.localizedDescription)
case .success(let isSignOut):
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: sign out %s", ((#file as NSString).lastPathComponent), #line, #function, isSignOut ? "success" : "fail")
guard isSignOut else { return }
self.coordinator.setup()
self.coordinator.setupOnboardingIfNeeds(animated: true)
}
}
.store(in: &disposeBag)
}
}
// MARK: - StatusTableViewControllerAspect
extension HomeTimelineViewController: StatusTableViewControllerAspect { }
extension HomeTimelineViewController: TableViewCellHeightCacheableContainer {
var cellFrameCache: NSCache<NSNumber, NSValue> { return viewModel.cellFrameCache }
}
// MARK: - UIScrollViewDelegate
extension HomeTimelineViewController {
func scrollViewDidScroll(_ scrollView: UIScrollView) {
aspectScrollViewDidScroll(scrollView)
viewModel.homeTimelineNavigationBarTitleViewModel.handleScrollViewDidScroll(scrollView)
}
}
extension HomeTimelineViewController: LoadMoreConfigurableTableViewContainer {
typealias BottomLoaderTableViewCell = TimelineBottomLoaderTableViewCell
typealias LoadingState = HomeTimelineViewModel.LoadOldestState.Loading
var loadMoreConfigurableTableView: UITableView { return tableView }
var loadMoreConfigurableStateMachine: GKStateMachine { return viewModel.loadoldestStateMachine }
}
// MARK: - UITableViewDelegate
extension HomeTimelineViewController: UITableViewDelegate {
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
aspectTableView(tableView, estimatedHeightForRowAt: indexPath)
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
aspectTableView(tableView, willDisplay: cell, forRowAt: indexPath)
}
func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) {
aspectTableView(tableView, didEndDisplaying: cell, forRowAt: indexPath)
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
aspectTableView(tableView, didSelectRowAt: indexPath)
}
func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
return aspectTableView(tableView, contextMenuConfigurationForRowAt: indexPath, point: point)
}
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)
}
func tableView(_ tableView: UITableView, willPerformPreviewActionForMenuWith configuration: UIContextMenuConfiguration, animator: UIContextMenuInteractionCommitAnimating) {
aspectTableView(tableView, willPerformPreviewActionForMenuWith: configuration, animator: animator)
}
}
// MARK: - UITableViewDataSourcePrefetching
extension HomeTimelineViewController: UITableViewDataSourcePrefetching {
func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) {
aspectTableView(tableView, prefetchRowsAt: indexPaths)
}
}
// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate
extension HomeTimelineViewController: ContentOffsetAdjustableTimelineViewControllerDelegate {
func navigationBar() -> UINavigationBar? {
return navigationController?.navigationBar
}
}
// MARK: - TimelineMiddleLoaderTableViewCellDelegate
extension HomeTimelineViewController: TimelineMiddleLoaderTableViewCellDelegate {
func configure(cell: TimelineMiddleLoaderTableViewCell, upperTimelineStatusID: String?, timelineIndexobjectID: NSManagedObjectID?) {
guard let upperTimelineIndexObjectID = timelineIndexobjectID else {
return
}
viewModel.loadMiddleSateMachineList
.receive(on: DispatchQueue.main)
.sink { [weak self] ids in
guard let _ = self else { return }
if let stateMachine = ids[upperTimelineIndexObjectID] {
guard let state = stateMachine.currentState else {
assertionFailure()
return
}
// make success state same as loading due to snapshot updating delay
let isLoading = state is HomeTimelineViewModel.LoadMiddleState.Loading || state is HomeTimelineViewModel.LoadMiddleState.Success
if isLoading {
cell.startAnimating()
} else {
cell.stopAnimating()
}
} else {
cell.stopAnimating()
}
}
.store(in: &cell.disposeBag)
var dict = viewModel.loadMiddleSateMachineList.value
if let _ = dict[upperTimelineIndexObjectID] {
// do nothing
} else {
let stateMachine = GKStateMachine(states: [
HomeTimelineViewModel.LoadMiddleState.Initial(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
HomeTimelineViewModel.LoadMiddleState.Loading(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
HomeTimelineViewModel.LoadMiddleState.Fail(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
HomeTimelineViewModel.LoadMiddleState.Success(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
])
stateMachine.enter(HomeTimelineViewModel.LoadMiddleState.Initial.self)
dict[upperTimelineIndexObjectID] = stateMachine
viewModel.loadMiddleSateMachineList.value = dict
}
}
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 }
switch item {
case .homeMiddleLoader(let upper):
guard let stateMachine = viewModel.loadMiddleSateMachineList.value[upper] else {
assertionFailure()
return
}
stateMachine.enter(HomeTimelineViewModel.LoadMiddleState.Loading.self)
default:
assertionFailure()
}
}
}
// MARK: - ScrollViewContainer
extension HomeTimelineViewController: ScrollViewContainer {
var scrollView: UIScrollView { return tableView }
func scrollToTop(animated: Bool) {
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 }
tableView.scrollToRow(at: indexPath, at: .top, animated: true)
}
}
}
// MARK: - AVPlayerViewControllerDelegate
extension HomeTimelineViewController: AVPlayerViewControllerDelegate {
func playerViewController(_ playerViewController: AVPlayerViewController, willBeginFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
handlePlayerViewController(playerViewController, willBeginFullScreenPresentationWithAnimationCoordinator: coordinator)
}
func playerViewController(_ playerViewController: AVPlayerViewController, willEndFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
handlePlayerViewController(playerViewController, willEndFullScreenPresentationWithAnimationCoordinator: coordinator)
}
}
// MARK: - StatusTableViewCellDelegate
extension HomeTimelineViewController: StatusTableViewCellDelegate {
weak var playerViewControllerDelegate: AVPlayerViewControllerDelegate? { return self }
func parent() -> UIViewController { return self }
}
// MARK: - HomeTimelineNavigationBarTitleViewDelegate
extension HomeTimelineViewController: HomeTimelineNavigationBarTitleViewDelegate {
func homeTimelineNavigationBarTitleView(_ titleView: HomeTimelineNavigationBarTitleView, logoButtonDidPressed sender: UIButton) {
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 }
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)
}
}