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

618 lines
26 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
import StoreKit
import MastodonAsset
import MastodonCore
import MastodonUI
import MastodonLocalization
final class HomeTimelineViewController: UIViewController, NeedsDependency, MediaPreviewableViewController {
let logger = Logger(subsystem: "HomeTimelineViewController", category: "UI")
weak var context: AppContext! { willSet { precondition(!isViewLoaded) } }
weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } }
var disposeBag = Set<AnyCancellable>()
var viewModel: HomeTimelineViewModel!
let mediaPreviewTransitionController = MediaPreviewTransitionController()
let friendsAssetImageView: UIImageView = {
let imageView = UIImageView()
imageView.image = Asset.Asset.friends.image
imageView.contentMode = .scaleAspectFill
return imageView
}()
lazy var emptyView: UIStackView = {
let emptyView = UIStackView()
emptyView.axis = .vertical
emptyView.distribution = .fill
emptyView.isLayoutMarginsRelativeArrangement = true
return emptyView
}()
let titleView = HomeTimelineNavigationBarTitleView()
let settingBarButtonItem: UIBarButtonItem = {
let barButtonItem = UIBarButtonItem()
barButtonItem.tintColor = ThemeService.tintColor
barButtonItem.image = Asset.ObjectsAndTools.gear.image.withRenderingMode(.alwaysTemplate)
barButtonItem.accessibilityLabel = L10n.Common.Controls.Actions.settings
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
view.backgroundColor = ThemeService.shared.currentTheme.value.secondarySystemBackgroundColor
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
.receive(on: DispatchQueue.main)
.sink { [weak self] displaySettingBarButtonItem in
guard let self = self else { return }
#if DEBUG
// display debug menu
self.navigationItem.rightBarButtonItem = {
let barButtonItem = UIBarButtonItem()
barButtonItem.image = UIImage(systemName: "ellipsis.circle")
barButtonItem.menu = self.debugMenu
return barButtonItem
}()
#else
self.navigationItem.rightBarButtonItem = displaySettingBarButtonItem ? self.settingBarButtonItem : nil
#endif
}
.store(in: &disposeBag)
#if DEBUG
// long press to trigger debug menu
settingBarButtonItem.menu = debugMenu
#else
settingBarButtonItem.target = self
settingBarButtonItem.action = #selector(HomeTimelineViewController.settingBarButtonItemPressed(_:))
#endif
#if SNAPSHOT
titleView.logoButton.menu = self.debugMenu
titleView.button.menu = self.debugMenu
#endif
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)
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)
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),
])
// // layout publish progress
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
tableView.delegate = self
viewModel.setupDiffableDataSource(
tableView: tableView,
statusTableViewCellDelegate: self,
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)
// bind refresh control
viewModel.didLoadLatest
.receive(on: DispatchQueue.main)
.sink { [weak self] _ in
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 }
}
.store(in: &disposeBag)
context.publisherService.$currentPublishProgress
.receive(on: DispatchQueue.main)
.sink { [weak self] progress in
guard let self = self else { return }
let progress = Float(progress)
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)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
refreshControl.endRefreshing()
tableView.deselectRow(with: transitionCoordinator, animated: animated)
// needs trigger manually after onboarding dismiss
setNeedsStatusBarAppearanceUpdate()
}
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()
}
}
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.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)
])
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.brand.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)
}
}
extension HomeTimelineViewController {
@objc private func findPeopleButtonPressed(_ sender: PrimaryActionButton) {
let suggestionAccountViewModel = SuggestionAccountViewModel(context: context, authContext: viewModel.authContext)
suggestionAccountViewModel.delegate = viewModel
_ = coordinator.present(
scene: .suggestionAccount(viewModel: suggestionAccountViewModel),
from: self,
transition: .modal(animated: true, completion: nil)
)
}
@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(authContext: viewModel.authContext)
coordinator.present(scene: .searchDetail(viewModel: searchDetailViewModel), from: self, transition: .modal(animated: true, completion: nil))
}
@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, authContext: viewModel.authContext, setting: setting)
coordinator.present(scene: .settings(viewModel: settingsViewModel), 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) {
Task { @MainActor in
try await context.authenticationService.signOutMastodonUser(authenticationBox: viewModel.authContext.mastodonAuthenticationBox)
self.coordinator.setup()
}
}
}
// 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 }
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
}
}
// MARK: - AuthContextProvider
extension HomeTimelineViewController: AuthContextProvider {
var authContext: AuthContext { viewModel.authContext }
}
// MARK: - UITableViewDelegate
extension HomeTimelineViewController: UITableViewDelegate, AutoGenerateTableViewDelegate {
// sourcery:inline:HomeTimelineViewController.AutoGenerateTableViewDelegate
// Generated using Sourcery
// DO NOT EDIT
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)
}
// sourcery:end
}
// 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)
}
}
}
// 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 }
// save position
savePositionBeforeScrollToTop()
tableView.scrollToRow(at: indexPath, at: .top, animated: true)
}
}
}
// 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)
}
}