359 lines
15 KiB
Swift
359 lines
15 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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final class HomeTimelineViewController: UIViewController, NeedsDependency {
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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 settingBarButtonItem: UIBarButtonItem = {
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let barButtonItem = UIBarButtonItem()
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barButtonItem.tintColor = Asset.Colors.Label.highlight.color
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barButtonItem.image = UIImage(systemName: "gear")?.withRenderingMode(.alwaysTemplate)
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return barButtonItem
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}()
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let composeBarButtonItem: UIBarButtonItem = {
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let barButtonItem = UIBarButtonItem()
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barButtonItem.tintColor = Asset.Colors.Label.highlight.color
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barButtonItem.image = UIImage(systemName: "square.and.pencil")?.withRenderingMode(.alwaysTemplate)
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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 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 = Asset.Colors.Background.systemGroupedBackground.color
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navigationItem.titleView = {
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let imageView = UIImageView(image: Asset.Asset.mastodonTextLogo.image.withRenderingMode(.alwaysTemplate))
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imageView.tintColor = Asset.Colors.Label.primary.color
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return imageView
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}()
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navigationItem.leftBarButtonItem = settingBarButtonItem
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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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settingBarButtonItem.menu = UIMenu(title: "Settings", image: nil, identifier: nil, options: .displayInline, children: [
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UIAction(title: "Sign Out", image: UIImage(systemName: "escape"), attributes: .destructive) { [weak self] action in
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guard let self = self else { return }
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self.signOutAction(action)
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}
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])
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#endif
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navigationItem.rightBarButtonItem = composeBarButtonItem
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composeBarButtonItem.target = self
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composeBarButtonItem.action = #selector(HomeTimelineViewController.composeBarButtonItemPressed(_:))
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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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viewModel.tableView = tableView
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viewModel.contentOffsetAdjustableTimelineViewControllerDelegate = self
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tableView.delegate = self
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viewModel.setupDiffableDataSource(
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for: tableView,
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dependency: self,
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statusTableViewCellDelegate: self,
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timelineMiddleLoaderTableViewCellDelegate: self
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)
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// bind refresh control
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viewModel.isFetchingLatestTimeline
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.receive(on: DispatchQueue.main)
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.sink { [weak self] isFetching in
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guard let self = self else { return }
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if !isFetching {
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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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}
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}
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}
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.store(in: &disposeBag)
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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viewModel.viewDidAppear.send()
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DispatchQueue.main.async { [weak self] in
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guard let self = self else { return }
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if (self.viewModel.fetchedResultsController.fetchedObjects ?? []).count == 0 {
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self.viewModel.loadLatestStateMachine.enter(HomeTimelineViewModel.LoadLatestState.Loading.self)
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}
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}
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}
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override func viewDidDisappear(_ animated: Bool) {
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super.viewDidDisappear(animated)
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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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@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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}
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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)
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let composeViewModel = ComposeViewModel(context: context, composeKind: .toot)
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coordinator.present(scene: .compose(viewModel: composeViewModel), 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 activeMastodonAuthenticationBox = context.authenticationService.activeMastodonAuthenticationBox.value else {
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return
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}
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context.authenticationService.signOutMastodonUser(
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domain: activeMastodonAuthenticationBox.domain,
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userID: activeMastodonAuthenticationBox.userID
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)
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.receive(on: DispatchQueue.main)
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.sink { [weak self] result in
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guard let self = self else { return }
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switch result {
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case .failure(let error):
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assertionFailure(error.localizedDescription)
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case .success(let isSignOut):
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os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: sign out %s", ((#file as NSString).lastPathComponent), #line, #function, isSignOut ? "success" : "fail")
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guard isSignOut else { return }
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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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.store(in: &disposeBag)
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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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handleScrollViewDidScroll(scrollView)
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}
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}
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extension HomeTimelineViewController: LoadMoreConfigurableTableViewContainer {
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typealias BottomLoaderTableViewCell = TimelineBottomLoaderTableViewCell
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typealias LoadingState = HomeTimelineViewModel.LoadOldestState.Loading
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var loadMoreConfigurableTableView: UITableView { return tableView }
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var loadMoreConfigurableStateMachine: GKStateMachine { return viewModel.loadoldestStateMachine }
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}
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// MARK: - UITableViewDelegate
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extension HomeTimelineViewController: UITableViewDelegate {
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// TODO:
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// func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
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// guard let diffableDataSource = viewModel.diffableDataSource else { return 100 }
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// guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return 100 }
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//
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// guard let frame = viewModel.cellFrameCache.object(forKey: NSNumber(value: item.hashValue))?.cgRectValue else {
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// return 200
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// }
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// // os_log("%{public}s[%{public}ld], %{public}s: cache cell frame %s", ((#file as NSString).lastPathComponent), #line, #function, frame.debugDescription)
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//
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// return ceil(frame.height)
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// }
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func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
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handleTableView(tableView, willDisplay: cell, forRowAt: indexPath)
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}
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}
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// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate
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extension HomeTimelineViewController: ContentOffsetAdjustableTimelineViewControllerDelegate {
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func navigationBar() -> UINavigationBar? {
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return navigationController?.navigationBar
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}
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}
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// MARK: - TimelineMiddleLoaderTableViewCellDelegate
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extension HomeTimelineViewController: TimelineMiddleLoaderTableViewCellDelegate {
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func configure(cell: TimelineMiddleLoaderTableViewCell, upperTimelineTootID: String?, timelineIndexobjectID: NSManagedObjectID?) {
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guard let upperTimelineIndexObjectID = timelineIndexobjectID else {
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return
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}
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viewModel.loadMiddleSateMachineList
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.receive(on: DispatchQueue.main)
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.sink { [weak self] ids in
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guard let _ = self else { return }
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if let stateMachine = ids[upperTimelineIndexObjectID] {
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guard let state = stateMachine.currentState else {
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assertionFailure()
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return
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}
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// make success state same as loading due to snapshot updating delay
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let isLoading = state is HomeTimelineViewModel.LoadMiddleState.Loading || state is HomeTimelineViewModel.LoadMiddleState.Success
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cell.loadMoreButton.isHidden = isLoading
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if isLoading {
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cell.activityIndicatorView.startAnimating()
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} else {
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cell.activityIndicatorView.stopAnimating()
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}
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} else {
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cell.loadMoreButton.isHidden = false
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cell.activityIndicatorView.stopAnimating()
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}
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}
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.store(in: &cell.disposeBag)
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var dict = viewModel.loadMiddleSateMachineList.value
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if let _ = dict[upperTimelineIndexObjectID] {
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// do nothing
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} else {
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let stateMachine = GKStateMachine(states: [
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HomeTimelineViewModel.LoadMiddleState.Initial(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
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HomeTimelineViewModel.LoadMiddleState.Loading(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
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HomeTimelineViewModel.LoadMiddleState.Fail(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
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HomeTimelineViewModel.LoadMiddleState.Success(viewModel: viewModel, upperTimelineIndexObjectID: upperTimelineIndexObjectID),
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])
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stateMachine.enter(HomeTimelineViewModel.LoadMiddleState.Initial.self)
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dict[upperTimelineIndexObjectID] = stateMachine
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viewModel.loadMiddleSateMachineList.value = dict
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}
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}
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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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switch item {
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case .homeMiddleLoader(let upper):
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guard let stateMachine = viewModel.loadMiddleSateMachineList.value[upper] else {
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assertionFailure()
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return
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}
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stateMachine.enter(HomeTimelineViewModel.LoadMiddleState.Loading.self)
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default:
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assertionFailure()
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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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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: - AVPlayerViewControllerDelegate
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extension HomeTimelineViewController: AVPlayerViewControllerDelegate {
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func playerViewController(_ playerViewController: AVPlayerViewController, willBeginFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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handlePlayerViewController(playerViewController, willBeginFullScreenPresentationWithAnimationCoordinator: coordinator)
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}
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func playerViewController(_ playerViewController: AVPlayerViewController, willEndFullScreenPresentationWithAnimationCoordinator coordinator: UIViewControllerTransitionCoordinator) {
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handlePlayerViewController(playerViewController, willEndFullScreenPresentationWithAnimationCoordinator: coordinator)
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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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weak var playerViewControllerDelegate: AVPlayerViewControllerDelegate? { return self }
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func parent() -> UIViewController { return self }
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}
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