From d548840bd913606e612a0eb885396614209a48a8 Mon Sep 17 00:00:00 2001 From: jk234ert Date: Thu, 1 Apr 2021 10:12:57 +0800 Subject: [PATCH] feat: implement hashtag timeline --- Mastodon.xcodeproj/project.pbxproj | 44 +++ Mastodon/Coordinator/SceneCoordinator.swift | 7 + .../Extension/Array+removeDuplicates.swift | 23 ++ ...Provider+StatusTableViewCellDelegate.swift | 18 ++ Mastodon/Scene/Compose/ComposeViewModel.swift | 22 +- ...imelineViewController+StatusProvider.swift | 88 ++++++ .../HashtagTimelineViewController.swift | 279 ++++++++++++++++++ .../HashtagTimelineViewModel+Diffable.swift | 128 ++++++++ ...tagTimelineViewModel+LoadLatestState.swift | 104 +++++++ ...tagTimelineViewModel+LoadMiddleState.swift | 131 ++++++++ ...tagTimelineViewModel+LoadOldestState.swift | 121 ++++++++ .../HashtagTimelineViewModel.swift | 112 +++++++ .../Scene/Share/View/Content/StatusView.swift | 9 + .../TableviewCell/StatusTableViewCell.swift | 7 + .../APIService+HashtagTimeline.swift | 70 +++++ .../API/Mastodon+API+Timeline.swift | 8 +- 16 files changed, 1165 insertions(+), 6 deletions(-) create mode 100644 Mastodon/Extension/Array+removeDuplicates.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController+StatusProvider.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+Diffable.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadLatestState.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadMiddleState.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadOldestState.swift create mode 100644 Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel.swift create mode 100644 Mastodon/Service/APIService/APIService+HashtagTimeline.swift diff --git a/Mastodon.xcodeproj/project.pbxproj b/Mastodon.xcodeproj/project.pbxproj index 5179c387..b56a389d 100644 --- a/Mastodon.xcodeproj/project.pbxproj +++ b/Mastodon.xcodeproj/project.pbxproj @@ -7,6 +7,15 @@ objects = { /* Begin PBXBuildFile section */ + 0F2021FB2613262F000C64BF /* HashtagTimelineViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F2021FA2613262F000C64BF /* HashtagTimelineViewController.swift */; }; + 0F202201261326E6000C64BF /* HashtagTimelineViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F202200261326E6000C64BF /* HashtagTimelineViewModel.swift */; }; + 0F20220726134DA4000C64BF /* HashtagTimelineViewModel+Diffable.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F20220626134DA4000C64BF /* HashtagTimelineViewModel+Diffable.swift */; }; + 0F20220D26134E3F000C64BF /* HashtagTimelineViewModel+LoadLatestState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F20220C26134E3F000C64BF /* HashtagTimelineViewModel+LoadLatestState.swift */; }; + 0F202213261351F5000C64BF /* APIService+HashtagTimeline.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F202212261351F5000C64BF /* APIService+HashtagTimeline.swift */; }; + 0F202227261411BB000C64BF /* HashtagTimelineViewController+StatusProvider.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F202226261411BA000C64BF /* HashtagTimelineViewController+StatusProvider.swift */; }; + 0F20222D261457EE000C64BF /* HashtagTimelineViewModel+LoadOldestState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F20222C261457EE000C64BF /* HashtagTimelineViewModel+LoadOldestState.swift */; }; + 0F20223326145E51000C64BF /* HashtagTimelineViewModel+LoadMiddleState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F20223226145E51000C64BF /* HashtagTimelineViewModel+LoadMiddleState.swift */; }; + 0F20223926146553000C64BF /* Array+removeDuplicates.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0F20223826146553000C64BF /* Array+removeDuplicates.swift */; }; 0FAA0FDF25E0B57E0017CCDE /* WelcomeViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0FAA0FDE25E0B57E0017CCDE /* WelcomeViewController.swift */; }; 0FAA101225E105390017CCDE /* PrimaryActionButton.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0FAA101125E105390017CCDE /* PrimaryActionButton.swift */; }; 0FAA101C25E10E760017CCDE /* UIFont.swift in Sources */ = {isa = PBXBuildFile; fileRef = 0FAA101B25E10E760017CCDE /* UIFont.swift */; }; @@ -316,6 +325,15 @@ /* End PBXCopyFilesBuildPhase section */ /* Begin PBXFileReference section */ + 0F2021FA2613262F000C64BF /* HashtagTimelineViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HashtagTimelineViewController.swift; sourceTree = ""; }; + 0F202200261326E6000C64BF /* HashtagTimelineViewModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HashtagTimelineViewModel.swift; sourceTree = ""; }; + 0F20220626134DA4000C64BF /* HashtagTimelineViewModel+Diffable.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HashtagTimelineViewModel+Diffable.swift"; sourceTree = ""; }; + 0F20220C26134E3F000C64BF /* HashtagTimelineViewModel+LoadLatestState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HashtagTimelineViewModel+LoadLatestState.swift"; sourceTree = ""; }; + 0F202212261351F5000C64BF /* APIService+HashtagTimeline.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "APIService+HashtagTimeline.swift"; sourceTree = ""; }; + 0F202226261411BA000C64BF /* HashtagTimelineViewController+StatusProvider.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HashtagTimelineViewController+StatusProvider.swift"; sourceTree = ""; }; + 0F20222C261457EE000C64BF /* HashtagTimelineViewModel+LoadOldestState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HashtagTimelineViewModel+LoadOldestState.swift"; sourceTree = ""; }; + 0F20223226145E51000C64BF /* HashtagTimelineViewModel+LoadMiddleState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "HashtagTimelineViewModel+LoadMiddleState.swift"; sourceTree = ""; }; + 0F20223826146553000C64BF /* Array+removeDuplicates.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "Array+removeDuplicates.swift"; sourceTree = ""; }; 0FAA0FDE25E0B57E0017CCDE /* WelcomeViewController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WelcomeViewController.swift; sourceTree = ""; }; 0FAA101125E105390017CCDE /* PrimaryActionButton.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PrimaryActionButton.swift; sourceTree = ""; }; 0FAA101B25E10E760017CCDE /* UIFont.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = UIFont.swift; sourceTree = ""; }; @@ -634,6 +652,20 @@ /* End PBXFrameworksBuildPhase section */ /* Begin PBXGroup section */ + 0F2021F5261325ED000C64BF /* HashtagTimeline */ = { + isa = PBXGroup; + children = ( + 0F2021FA2613262F000C64BF /* HashtagTimelineViewController.swift */, + 0F202200261326E6000C64BF /* HashtagTimelineViewModel.swift */, + 0F20220626134DA4000C64BF /* HashtagTimelineViewModel+Diffable.swift */, + 0F20220C26134E3F000C64BF /* HashtagTimelineViewModel+LoadLatestState.swift */, + 0F202226261411BA000C64BF /* HashtagTimelineViewController+StatusProvider.swift */, + 0F20222C261457EE000C64BF /* HashtagTimelineViewModel+LoadOldestState.swift */, + 0F20223226145E51000C64BF /* HashtagTimelineViewModel+LoadMiddleState.swift */, + ); + path = HashtagTimeline; + sourceTree = ""; + }; 0FAA0FDD25E0B5700017CCDE /* Welcome */ = { isa = PBXGroup; children = ( @@ -1119,6 +1151,7 @@ DB9A488F26035963008B817C /* APIService+Media.swift */, 2D34D9D026148D9E0081BFC0 /* APIService+Recommend.swift */, 2D34D9DA261494120081BFC0 /* APIService+Search.swift */, + 0F202212261351F5000C64BF /* APIService+HashtagTimeline.swift */, ); path = APIService; sourceTree = ""; @@ -1328,6 +1361,7 @@ DB8AF55525C1379F002E6C99 /* Scene */ = { isa = PBXGroup; children = ( + 0F2021F5261325ED000C64BF /* HashtagTimeline */, 2D7631A425C1532200929FB9 /* Share */, DB8AF54E25C13703002E6C99 /* MainTab */, DB01409B25C40BB600F9F3CF /* Onboarding */, @@ -1369,6 +1403,7 @@ 2D3F9E0325DFA133004262D9 /* UITapGestureRecognizer.swift */, 2D84350425FF858100EECE90 /* UIScrollView.swift */, DB9E0D6E25EE008500CFDD76 /* UIInterpolatingMotionEffect.swift */, + 0F20223826146553000C64BF /* Array+removeDuplicates.swift */, ); path = Extension; sourceTree = ""; @@ -1892,6 +1927,7 @@ 2D34D9DB261494120081BFC0 /* APIService+Search.swift in Sources */, DB45FAE325CA7181005A8AC7 /* MastodonUser.swift in Sources */, DB2FF510260B113300ADA9FE /* ComposeStatusPollExpiresOptionCollectionViewCell.swift in Sources */, + 0F202213261351F5000C64BF /* APIService+HashtagTimeline.swift in Sources */, DB0AC6FC25CD02E600D75117 /* APIService+Instance.swift in Sources */, 2D69D00A25CAA00300C3A1B2 /* APIService+CoreData+Status.swift in Sources */, DB4481C625EE2ADA00BEFB67 /* PollSection.swift in Sources */, @@ -1911,6 +1947,7 @@ 2D82BA0525E7897700E36F0F /* MastodonResendEmailViewModelNavigationDelegateShim.swift in Sources */, DB55D33025FB630A0002F825 /* TwitterTextEditor+String.swift in Sources */, 2D38F1EB25CD477000561493 /* HomeTimelineViewModel+LoadLatestState.swift in Sources */, + 0F202201261326E6000C64BF /* HashtagTimelineViewModel.swift in Sources */, DBD9149025DF6D8D00903DFD /* APIService+Onboarding.swift in Sources */, DB98337F25C9452D00AD9700 /* APIService+APIError.swift in Sources */, DB9E0D6F25EE008500CFDD76 /* UIInterpolatingMotionEffect.swift in Sources */, @@ -1941,6 +1978,7 @@ DB9A486C26032AC1008B817C /* AttachmentContainerView+EmptyStateView.swift in Sources */, DB4481CC25EE2AFE00BEFB67 /* PollItem.swift in Sources */, DB44767B260B3B8C00B66B82 /* CustomEmojiPickerInputView.swift in Sources */, + 0F20222D261457EE000C64BF /* HashtagTimelineViewModel+LoadOldestState.swift in Sources */, DB4563BD25E11A24004DA0B9 /* KeyboardResponderService.swift in Sources */, DB5086BE25CC0D9900C2C187 /* SplashPreference.swift in Sources */, DB44768B260B3F2100B66B82 /* CustomEmojiPickerItem.swift in Sources */, @@ -1978,6 +2016,7 @@ DB45FADD25CA6F6B005A8AC7 /* APIService+CoreData+MastodonUser.swift in Sources */, 2D32EABA25CB9B0500C9ED86 /* UIView.swift in Sources */, 2D38F20825CD491300561493 /* DisposeBagCollectable.swift in Sources */, + 0F20220D26134E3F000C64BF /* HashtagTimelineViewModel+LoadLatestState.swift in Sources */, DB49A63D25FF609300B98345 /* PlayerContainerView+MediaTypeIndicotorView.swift in Sources */, DB0140CF25C42AEE00F9F3CF /* OSLog.swift in Sources */, DB44384F25E8C1FA008912A2 /* CALayer.swift in Sources */, @@ -2005,6 +2044,7 @@ DB98336B25C9420100AD9700 /* APIService+App.swift in Sources */, DBA0A11325FB3FC10079C110 /* ComposeToolbarView.swift in Sources */, 2D32EADA25CBCC3300C9ED86 /* PublicTimelineViewModel+LoadMiddleState.swift in Sources */, + 0F20223926146553000C64BF /* Array+removeDuplicates.swift in Sources */, DB8AF54425C13647002E6C99 /* SceneCoordinator.swift in Sources */, 5DF1058525F88AE500D6C0D4 /* NeedsDependency+AVPlayerViewControllerDelegate.swift in Sources */, DB447697260B439000B66B82 /* CustomEmojiPickerHeaderCollectionReusableView.swift in Sources */, @@ -2012,7 +2052,9 @@ 2D04F42525C255B9003F936F /* APIService+PublicTimeline.swift in Sources */, 2D34D9E226149C920081BFC0 /* SearchRecommendTagsCollectionViewCell.swift in Sources */, 2D76317D25C14DF500929FB9 /* PublicTimelineViewController+StatusProvider.swift in Sources */, + 0F20223326145E51000C64BF /* HashtagTimelineViewModel+LoadMiddleState.swift in Sources */, 2D206B8025F5F45E00143C56 /* UIImage.swift in Sources */, + 0F20220726134DA4000C64BF /* HashtagTimelineViewModel+Diffable.swift in Sources */, 2D5A3D2825CF8BC9002347D6 /* HomeTimelineViewModel+Diffable.swift in Sources */, DB98339C25C96DE600AD9700 /* APIService+Account.swift in Sources */, 2D42FF6B25C817D2004A627A /* TootContent.swift in Sources */, @@ -2021,10 +2063,12 @@ DB8AF52E25C13561002E6C99 /* ViewStateStore.swift in Sources */, 2DA7D04A25CA52CB00804E11 /* TimelineBottomLoaderTableViewCell.swift in Sources */, 2D76318325C14E8F00929FB9 /* PublicTimelineViewModel+Diffable.swift in Sources */, + 0F202227261411BB000C64BF /* HashtagTimelineViewController+StatusProvider.swift in Sources */, 2D7631A825C1535600929FB9 /* StatusTableViewCell.swift in Sources */, 2D76316525C14BD100929FB9 /* PublicTimelineViewController.swift in Sources */, 2D69CFF425CA9E2200C3A1B2 /* LoadMoreConfigurableTableViewContainer.swift in Sources */, DB427DD825BAA00100D1B89D /* SceneDelegate.swift in Sources */, + 0F2021FB2613262F000C64BF /* HashtagTimelineViewController.swift in Sources */, DB8190C62601FF0400020C08 /* AttachmentContainerView.swift in Sources */, DB5086AB25CC0BBB00C2C187 /* AvatarConfigurableView.swift in Sources */, DB0140AE25C40C7300F9F3CF /* MastodonPinBasedAuthenticationViewModel.swift in Sources */, diff --git a/Mastodon/Coordinator/SceneCoordinator.swift b/Mastodon/Coordinator/SceneCoordinator.swift index 6ed0b18f..fb060325 100644 --- a/Mastodon/Coordinator/SceneCoordinator.swift +++ b/Mastodon/Coordinator/SceneCoordinator.swift @@ -50,6 +50,9 @@ extension SceneCoordinator { // compose case compose(viewModel: ComposeViewModel) + // Hashtag Timeline + case hashtagTimeline(viewModel: HashtagTimelineViewModel) + // misc case alertController(alertController: UIAlertController) @@ -206,6 +209,10 @@ private extension SceneCoordinator { ) } viewController = alertController + case .hashtagTimeline(let viewModel): + let _viewController = HashtagTimelineViewController() + _viewController.viewModel = viewModel + viewController = _viewController #if DEBUG case .publicTimeline: let _viewController = PublicTimelineViewController() diff --git a/Mastodon/Extension/Array+removeDuplicates.swift b/Mastodon/Extension/Array+removeDuplicates.swift new file mode 100644 index 00000000..c3a4b038 --- /dev/null +++ b/Mastodon/Extension/Array+removeDuplicates.swift @@ -0,0 +1,23 @@ +// +// Array+removeDuplicates.swift +// Mastodon +// +// Created by BradGao on 2021/3/31. +// + +import Foundation + +/// https://www.hackingwithswift.com/example-code/language/how-to-remove-duplicate-items-from-an-array +extension Array where Element: Hashable { + func removingDuplicates() -> [Element] { + var addedDict = [Element: Bool]() + + return filter { + addedDict.updateValue(true, forKey: $0) == nil + } + } + + mutating func removeDuplicates() { + self = self.removingDuplicates() + } +} diff --git a/Mastodon/Protocol/StatusProvider/StatusProvider+StatusTableViewCellDelegate.swift b/Mastodon/Protocol/StatusProvider/StatusProvider+StatusTableViewCellDelegate.swift index f3d31ff3..1ba6e60c 100644 --- a/Mastodon/Protocol/StatusProvider/StatusProvider+StatusTableViewCellDelegate.swift +++ b/Mastodon/Protocol/StatusProvider/StatusProvider+StatusTableViewCellDelegate.swift @@ -192,3 +192,21 @@ extension StatusTableViewCellDelegate where Self: StatusProvider { } } + +// MARK: - ActiveLabel didSelect ActiveEntity +extension StatusTableViewCellDelegate where Self: StatusProvider { + func statusTableViewCell(_ cell: StatusTableViewCell, statusView: StatusView, didSelectActiveEntity entity: ActiveEntity) { + switch entity.type { + case .hashtag(let hashtag, let userInfo): + let hashtagTimelienViewModel = HashtagTimelineViewModel(context: context, hashTag: hashtag) + coordinator.present(scene: .hashtagTimeline(viewModel: hashtagTimelienViewModel), from: self, transition: .show) + break + case .email(let content, let userInfo): + break + case .mention(let mention, let userInfo): + break + case .url(let content, let trimmed, let url, let userInfo): + break + } + } +} diff --git a/Mastodon/Scene/Compose/ComposeViewModel.swift b/Mastodon/Scene/Compose/ComposeViewModel.swift index 52ca4cc8..52a7bf2f 100644 --- a/Mastodon/Scene/Compose/ComposeViewModel.swift +++ b/Mastodon/Scene/Compose/ComposeViewModel.swift @@ -56,6 +56,8 @@ final class ComposeViewModel { let isPollToolbarButtonEnabled = CurrentValueSubject(true) let characterCount = CurrentValueSubject(0) + var injectedContent: String? = nil + // custom emojis var customEmojiViewModelSubscription: AnyCancellable? let customEmojiViewModel = CurrentValueSubject(nil) @@ -71,10 +73,12 @@ final class ComposeViewModel { init( context: AppContext, - composeKind: ComposeStatusSection.ComposeKind + composeKind: ComposeStatusSection.ComposeKind, + injectedContent: String? = nil ) { self.context = context self.composeKind = composeKind + self.injectedContent = injectedContent switch composeKind { case .post: self.title = CurrentValueSubject(L10n.Scene.Compose.Title.newPost) case .reply: self.title = CurrentValueSubject(L10n.Scene.Compose.Title.newReply) @@ -195,9 +199,16 @@ final class ComposeViewModel { // bind modal dismiss state composeStatusAttribute.composeContent .receive(on: DispatchQueue.main) - .map { content in + .map { [weak self] content in let content = content ?? "" - return content.isEmpty + if content.isEmpty { + return true + } + // if injectedContent plus a space is equal to the content, simply dismiss the modal + if let injectedContent = self?.injectedContent { + return content == (injectedContent + " ") + } + return false } .assign(to: \.value, on: shouldDismiss) .store(in: &disposeBag) @@ -304,6 +315,11 @@ final class ComposeViewModel { self.isPollToolbarButtonEnabled.value = !shouldPollDisable }) .store(in: &disposeBag) + + if let injectedContent = injectedContent { + // add a space after the injected text + composeStatusAttribute.composeContent.send(injectedContent + " ") + } } deinit { diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController+StatusProvider.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController+StatusProvider.swift new file mode 100644 index 00000000..e4092ce0 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController+StatusProvider.swift @@ -0,0 +1,88 @@ +// +// HashtagTimelineViewController+StatusProvider.swift +// Mastodon +// +// Created by BradGao on 2021/3/31. +// + +import os.log +import UIKit +import Combine +import CoreData +import CoreDataStack + +// MARK: - StatusProvider +extension HashtagTimelineViewController: StatusProvider { + + func toot() -> Future { + return Future { promise in promise(.success(nil)) } + } + + func toot(for cell: UITableViewCell, indexPath: IndexPath?) -> Future { + return Future { promise in + guard let diffableDataSource = self.viewModel.diffableDataSource else { + assertionFailure() + promise(.success(nil)) + return + } + guard let indexPath = indexPath ?? self.tableView.indexPath(for: cell), + let item = diffableDataSource.itemIdentifier(for: indexPath) else { + promise(.success(nil)) + return + } + + switch item { + case .homeTimelineIndex(let objectID, _): + let managedObjectContext = self.viewModel.context.managedObjectContext + managedObjectContext.perform { + let timelineIndex = managedObjectContext.object(with: objectID) as? HomeTimelineIndex + promise(.success(timelineIndex?.toot)) + } + default: + promise(.success(nil)) + } + } + } + + func toot(for cell: UICollectionViewCell) -> Future { + return Future { promise in promise(.success(nil)) } + } + + var managedObjectContext: NSManagedObjectContext { + return viewModel.context.managedObjectContext + } + + var tableViewDiffableDataSource: UITableViewDiffableDataSource? { + return viewModel.diffableDataSource + } + + func item(for cell: UITableViewCell?, indexPath: IndexPath?) -> Item? { + guard let diffableDataSource = self.viewModel.diffableDataSource else { + assertionFailure() + return nil + } + + guard let indexPath = indexPath ?? cell.flatMap({ self.tableView.indexPath(for: $0) }), + let item = diffableDataSource.itemIdentifier(for: indexPath) else { + return nil + } + + return item + } + + func items(indexPaths: [IndexPath]) -> [Item] { + guard let diffableDataSource = self.viewModel.diffableDataSource else { + assertionFailure() + return [] + } + + var items: [Item] = [] + for indexPath in indexPaths { + guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { continue } + items.append(item) + } + return items + } + +} + diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController.swift new file mode 100644 index 00000000..ba6d30e3 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewController.swift @@ -0,0 +1,279 @@ +// +// HashtagTimelineViewController.swift +// Mastodon +// +// Created by BradGao on 2021/3/30. +// + +import os.log +import UIKit +import AVKit +import Combine +import GameplayKit +import CoreData + +class HashtagTimelineViewController: UIViewController, NeedsDependency { + weak var context: AppContext! { willSet { precondition(!isViewLoaded) } } + weak var coordinator: SceneCoordinator! { willSet { precondition(!isViewLoaded) } } + + var disposeBag = Set() + + var viewModel: HashtagTimelineViewModel! + + let composeBarButtonItem: UIBarButtonItem = { + let barButtonItem = UIBarButtonItem() + barButtonItem.tintColor = Asset.Colors.Label.highlight.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 refreshControl = UIRefreshControl() + + deinit { + os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s:", ((#file as NSString).lastPathComponent), #line, #function) + } +} + +extension HashtagTimelineViewController { + + override func viewDidLoad() { + super.viewDidLoad() + + title = "#\(viewModel.hashTag)" + view.backgroundColor = Asset.Colors.Background.systemGroupedBackground.color + + navigationItem.rightBarButtonItem = composeBarButtonItem + + composeBarButtonItem.target = self + composeBarButtonItem.action = #selector(HashtagTimelineViewController.composeBarButtonItemPressed(_:)) + + tableView.refreshControl = refreshControl + refreshControl.addTarget(self, action: #selector(HashtagTimelineViewController.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), + ]) + + 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() + } + } + } + .store(in: &disposeBag) + + } + + override func viewWillAppear(_ animated: Bool) { + super.viewWillAppear(animated) + guard viewModel.loadLatestStateMachine.currentState is HashtagTimelineViewModel.LoadLatestState.Initial else { return } + tableView.setContentOffset(CGPoint(x: 0, y: tableView.contentOffset.y - refreshControl.frame.size.height), animated: true) + refreshControl.beginRefreshing() + refreshControl.sendActions(for: .valueChanged) + } + + override func viewDidDisappear(_ animated: Bool) { + super.viewDidDisappear(animated) + context.videoPlaybackService.viewDidDisappear(from: self) + context.audioPlaybackService.viewDidDisappear(from: self) + } + + 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 HashtagTimelineViewController { + + @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, injectedContent: "#\(viewModel.hashTag)") + coordinator.present(scene: .compose(viewModel: composeViewModel), from: self, transition: .modal(animated: true, completion: nil)) + } + + @objc private func refreshControlValueChanged(_ sender: UIRefreshControl) { + guard viewModel.loadLatestStateMachine.enter(HashtagTimelineViewModel.LoadLatestState.Loading.self) else { + sender.endRefreshing() + return + } + } +} + +// MARK: - UIScrollViewDelegate +extension HashtagTimelineViewController { + func scrollViewDidScroll(_ scrollView: UIScrollView) { + handleScrollViewDidScroll(scrollView) +// self.viewModel.homeTimelineNavigationBarState.handleScrollViewDidScroll(scrollView) + } +} + +extension HashtagTimelineViewController: LoadMoreConfigurableTableViewContainer { + typealias BottomLoaderTableViewCell = TimelineBottomLoaderTableViewCell + typealias LoadingState = HashtagTimelineViewModel.LoadOldestState.Loading + var loadMoreConfigurableTableView: UITableView { return tableView } + var loadMoreConfigurableStateMachine: GKStateMachine { return viewModel.loadoldestStateMachine } +} + +// MARK: - UITableViewDelegate +extension HashtagTimelineViewController: UITableViewDelegate { + + // TODO: + // func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat { + // guard let diffableDataSource = viewModel.diffableDataSource else { return 100 } + // guard let item = diffableDataSource.itemIdentifier(for: indexPath) else { return 100 } + // + // guard let frame = viewModel.cellFrameCache.object(forKey: NSNumber(value: item.hashValue))?.cgRectValue else { + // return 200 + // } + // // os_log("%{public}s[%{public}ld], %{public}s: cache cell frame %s", ((#file as NSString).lastPathComponent), #line, #function, frame.debugDescription) + // + // return ceil(frame.height) + // } + + func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) { + handleTableView(tableView, willDisplay: cell, forRowAt: indexPath) + } + + func tableView(_ tableView: UITableView, didEndDisplaying cell: UITableViewCell, forRowAt indexPath: IndexPath) { + handleTableView(tableView, didEndDisplaying: cell, forRowAt: indexPath) + } +} + +// MARK: - ContentOffsetAdjustableTimelineViewControllerDelegate +extension HashtagTimelineViewController: ContentOffsetAdjustableTimelineViewControllerDelegate { + func navigationBar() -> UINavigationBar? { + return navigationController?.navigationBar + } +} + + +// MARK: - UITableViewDataSourcePrefetching +extension HashtagTimelineViewController: UITableViewDataSourcePrefetching { + func tableView(_ tableView: UITableView, prefetchRowsAt indexPaths: [IndexPath]) { + handleTableView(tableView, prefetchRowsAt: indexPaths) + } +} + +// MARK: - TimelineMiddleLoaderTableViewCellDelegate +extension HashtagTimelineViewController: TimelineMiddleLoaderTableViewCellDelegate { + func configure(cell: TimelineMiddleLoaderTableViewCell, upperTimelineTootID: 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 HashtagTimelineViewModel.LoadMiddleState.Loading || state is HashtagTimelineViewModel.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: [ + HashtagTimelineViewModel.LoadMiddleState.Initial(viewModel: viewModel, upperStatusObjectID: upperTimelineIndexObjectID), + HashtagTimelineViewModel.LoadMiddleState.Loading(viewModel: viewModel, upperStatusObjectID: upperTimelineIndexObjectID), + HashtagTimelineViewModel.LoadMiddleState.Fail(viewModel: viewModel, upperStatusObjectID: upperTimelineIndexObjectID), + HashtagTimelineViewModel.LoadMiddleState.Success(viewModel: viewModel, upperStatusObjectID: upperTimelineIndexObjectID), + ]) + stateMachine.enter(HashtagTimelineViewModel.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(HashtagTimelineViewModel.LoadMiddleState.Loading.self) + default: + assertionFailure() + } + } +} + +// MARK: - AVPlayerViewControllerDelegate +extension HashtagTimelineViewController: 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 HashtagTimelineViewController: StatusTableViewCellDelegate { + weak var playerViewControllerDelegate: AVPlayerViewControllerDelegate? { return self } + func parent() -> UIViewController { return self } +} diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+Diffable.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+Diffable.swift new file mode 100644 index 00000000..a4156878 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+Diffable.swift @@ -0,0 +1,128 @@ +// +// HashtagTimelineViewModel+Diffable.swift +// Mastodon +// +// Created by BradGao on 2021/3/30. +// + +import os.log +import UIKit +import CoreData +import CoreDataStack + +extension HashtagTimelineViewModel { + func setupDiffableDataSource( + for tableView: UITableView, + dependency: NeedsDependency, + statusTableViewCellDelegate: StatusTableViewCellDelegate, + timelineMiddleLoaderTableViewCellDelegate: TimelineMiddleLoaderTableViewCellDelegate + ) { + let timestampUpdatePublisher = Timer.publish(every: 1.0, on: .main, in: .common) + .autoconnect() + .share() + .eraseToAnyPublisher() + + diffableDataSource = StatusSection.tableViewDiffableDataSource( + for: tableView, + dependency: dependency, + managedObjectContext: context.managedObjectContext, + timestampUpdatePublisher: timestampUpdatePublisher, + statusTableViewCellDelegate: statusTableViewCellDelegate, + timelineMiddleLoaderTableViewCellDelegate: timelineMiddleLoaderTableViewCellDelegate + ) + } +} + +// MARK: - NSFetchedResultsControllerDelegate +extension HashtagTimelineViewModel: NSFetchedResultsControllerDelegate { + + func controllerWillChangeContent(_ controller: NSFetchedResultsController) { + os_log("%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function) + } + + func controller(_ controller: NSFetchedResultsController, didChangeContentWith snapshot: NSDiffableDataSourceSnapshotReference) { + os_log("%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function) + + guard let tableView = self.tableView else { return } + guard let navigationBar = self.contentOffsetAdjustableTimelineViewControllerDelegate?.navigationBar() else { return } + + guard let diffableDataSource = self.diffableDataSource else { return } + + let parentManagedObjectContext = fetchedResultsController.managedObjectContext + let managedObjectContext = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType) + managedObjectContext.parent = parentManagedObjectContext + + let oldSnapshot = diffableDataSource.snapshot() + let snapshot = snapshot as NSDiffableDataSourceSnapshot + + let statusItemList: [Item] = snapshot.itemIdentifiers.map { + let status = managedObjectContext.object(with: $0) as! Toot + + let isStatusTextSensitive: Bool = { + guard let spoilerText = status.spoilerText, !spoilerText.isEmpty else { return false } + return true + }() + return Item.toot(objectID: $0, attribute: Item.StatusAttribute(isStatusTextSensitive: isStatusTextSensitive, isStatusSensitive: status.sensitive)) + } + + var newSnapshot = NSDiffableDataSourceSnapshot() + newSnapshot.appendSections([.main]) + + // Check if there is a `needLoadMiddleIndex` + if let needLoadMiddleIndex = needLoadMiddleIndex, needLoadMiddleIndex < (statusItemList.count - 1) { + // If yes, insert a `middleLoader` at the index + var newItems = statusItemList + newItems.insert(.homeMiddleLoader(upperTimelineIndexAnchorObjectID: snapshot.itemIdentifiers[needLoadMiddleIndex]), at: (needLoadMiddleIndex + 1)) + newSnapshot.appendItems(newItems, toSection: .main) + } else { + newSnapshot.appendItems(statusItemList, toSection: .main) + } + + if !(self.loadoldestStateMachine.currentState is LoadOldestState.NoMore) { + newSnapshot.appendItems([.bottomLoader], toSection: .main) + } + + guard let difference = self.calculateReloadSnapshotDifference(navigationBar: navigationBar, tableView: tableView, oldSnapshot: oldSnapshot, newSnapshot: newSnapshot) else { + diffableDataSource.apply(newSnapshot) + self.isFetchingLatestTimeline.value = false + return + } + + DispatchQueue.main.async { + diffableDataSource.apply(newSnapshot, animatingDifferences: false) { + tableView.scrollToRow(at: difference.targetIndexPath, at: .top, animated: false) + tableView.contentOffset.y = tableView.contentOffset.y - difference.offset + self.isFetchingLatestTimeline.value = false + } + } + } + + private struct Difference { + let targetIndexPath: IndexPath + let offset: CGFloat + } + + private func calculateReloadSnapshotDifference( + navigationBar: UINavigationBar, + tableView: UITableView, + oldSnapshot: NSDiffableDataSourceSnapshot, + newSnapshot: NSDiffableDataSourceSnapshot + ) -> Difference? { + guard oldSnapshot.numberOfItems != 0 else { return nil } + + let oldItemAtBeginning = oldSnapshot.itemIdentifiers(inSection: .main).first! + + guard let oldItemBeginIndexInNewSnapshot = newSnapshot.itemIdentifiers(inSection: .main).firstIndex(of: oldItemAtBeginning) else { return nil } + + if oldItemBeginIndexInNewSnapshot > 0 { + let targetIndexPath = IndexPath(row: oldItemBeginIndexInNewSnapshot, section: 0) + let offset = UIViewController.tableViewCellOriginOffsetToWindowTop(in: tableView, at: IndexPath(row: 0, section: 0), navigationBar: navigationBar) + return Difference( + targetIndexPath: targetIndexPath, + offset: offset + ) + } + return nil + } + +} diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadLatestState.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadLatestState.swift new file mode 100644 index 00000000..b3cb2cc3 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadLatestState.swift @@ -0,0 +1,104 @@ +// +// HashtagTimelineViewModel+LoadLatestState.swift +// Mastodon +// +// Created by BradGao on 2021/3/30. +// + +import os.log +import UIKit +import GameplayKit +import CoreData +import CoreDataStack +import MastodonSDK + +extension HashtagTimelineViewModel { + class LoadLatestState: GKState { + weak var viewModel: HashtagTimelineViewModel? + + init(viewModel: HashtagTimelineViewModel) { + self.viewModel = viewModel + } + + override func didEnter(from previousState: GKState?) { + os_log("%{public}s[%{public}ld], %{public}s: enter %s, previous: %s", ((#file as NSString).lastPathComponent), #line, #function, self.debugDescription, previousState.debugDescription) + viewModel?.loadLatestStateMachinePublisher.send(self) + } + } +} + +extension HashtagTimelineViewModel.LoadLatestState { + class Initial: HashtagTimelineViewModel.LoadLatestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self + } + } + + class Loading: HashtagTimelineViewModel.LoadLatestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Fail.self || stateClass == Idle.self + } + + override func didEnter(from previousState: GKState?) { + super.didEnter(from: previousState) + guard let viewModel = viewModel, let stateMachine = stateMachine else { return } + guard let activeMastodonAuthenticationBox = viewModel.context.authenticationService.activeMastodonAuthenticationBox.value else { + // sign out when loading will enter here + stateMachine.enter(Fail.self) + return + } + // TODO: only set large count when using Wi-Fi + viewModel.context.apiService.hashtagTimeline( + domain: activeMastodonAuthenticationBox.domain, + hashtag: viewModel.hashTag, + authorizationBox: activeMastodonAuthenticationBox) + .receive(on: DispatchQueue.main) + .sink { completion in + switch completion { + case .failure(let error): + // TODO: handle error + viewModel.isFetchingLatestTimeline.value = false + os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: fetch toots failed. %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription) + case .finished: + // handle isFetchingLatestTimeline in fetch controller delegate + break + } + + stateMachine.enter(Idle.self) + + } receiveValue: { response in + let newStatusIDList = response.value.map { $0.id } + + // When response data: + // 1. is not empty + // 2. last status are not recorded + // Then we may have middle data to load + if !viewModel.hashtagStatusIDList.isEmpty, let lastNewStatusID = newStatusIDList.last, + !viewModel.hashtagStatusIDList.contains(lastNewStatusID) { + viewModel.needLoadMiddleIndex = (newStatusIDList.count - 1) + } else { + viewModel.needLoadMiddleIndex = nil + } + + viewModel.hashtagStatusIDList.insert(contentsOf: newStatusIDList, at: 0) + viewModel.hashtagStatusIDList.removeDuplicates() + + let newPredicate = Toot.predicate(domain: activeMastodonAuthenticationBox.domain, ids: viewModel.hashtagStatusIDList) + viewModel.timelinePredicate.send(newPredicate) + } + .store(in: &viewModel.disposeBag) + } + } + + class Fail: HashtagTimelineViewModel.LoadLatestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self || stateClass == Idle.self + } + } + + class Idle: HashtagTimelineViewModel.LoadLatestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self + } + } +} diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadMiddleState.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadMiddleState.swift new file mode 100644 index 00000000..3c3b01d8 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadMiddleState.swift @@ -0,0 +1,131 @@ +// +// HashtagTimelineViewModel+LoadMiddleState.swift +// Mastodon +// +// Created by BradGao on 2021/3/31. +// + +import os.log +import Foundation +import GameplayKit +import CoreData +import CoreDataStack + +extension HashtagTimelineViewModel { + class LoadMiddleState: GKState { + weak var viewModel: HashtagTimelineViewModel? + let upperStatusObjectID: NSManagedObjectID + + init(viewModel: HashtagTimelineViewModel, upperStatusObjectID: NSManagedObjectID) { + self.viewModel = viewModel + self.upperStatusObjectID = upperStatusObjectID + } + + override func didEnter(from previousState: GKState?) { + os_log("%{public}s[%{public}ld], %{public}s: enter %s, previous: %s", ((#file as NSString).lastPathComponent), #line, #function, self.debugDescription, previousState.debugDescription) + guard let viewModel = viewModel, let stateMachine = stateMachine else { return } + var dict = viewModel.loadMiddleSateMachineList.value + dict[upperStatusObjectID] = stateMachine + viewModel.loadMiddleSateMachineList.value = dict // trigger value change + } + } +} + +extension HashtagTimelineViewModel.LoadMiddleState { + + class Initial: HashtagTimelineViewModel.LoadMiddleState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self + } + } + + class Loading: HashtagTimelineViewModel.LoadMiddleState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + // guard let viewModel = viewModel else { return false } + return stateClass == Success.self || stateClass == Fail.self + } + + override func didEnter(from previousState: GKState?) { + super.didEnter(from: previousState) + + guard let viewModel = viewModel, let stateMachine = stateMachine else { return } + guard let activeMastodonAuthenticationBox = viewModel.context.authenticationService.activeMastodonAuthenticationBox.value else { + stateMachine.enter(Fail.self) + return + } + + guard let upperStatusObject = (viewModel.fetchedResultsController.fetchedObjects ?? []).first(where: { $0.objectID == upperStatusObjectID }) else { + stateMachine.enter(Fail.self) + return + } + let statusIDs = (viewModel.fetchedResultsController.fetchedObjects ?? []).compactMap { status in + status.id + } + + // TODO: only set large count when using Wi-Fi + let maxID = upperStatusObject.id + viewModel.context.apiService.hashtagTimeline( + domain: activeMastodonAuthenticationBox.domain, + maxID: maxID, + hashtag: viewModel.hashTag, + authorizationBox: activeMastodonAuthenticationBox) + .delay(for: .seconds(1), scheduler: DispatchQueue.main) + .receive(on: DispatchQueue.main) + .sink { completion in +// viewModel.homeTimelineNavigationBarState.receiveCompletion(completion: completion) + switch completion { + case .failure(let error): + // TODO: handle error + os_log("%{public}s[%{public}ld], %{public}s: fetch toots failed. %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription) + stateMachine.enter(Fail.self) + case .finished: + break + } + } receiveValue: { response in + stateMachine.enter(Success.self) + + let newStatusIDList = response.value.map { $0.id } + + if let indexToInsert = viewModel.hashtagStatusIDList.firstIndex(of: maxID) { + // When response data: + // 1. is not empty + // 2. last status are not recorded + // Then we may have middle data to load + if let lastNewStatusID = newStatusIDList.last, + !viewModel.hashtagStatusIDList.contains(lastNewStatusID) { + viewModel.needLoadMiddleIndex = indexToInsert + newStatusIDList.count + } else { + viewModel.needLoadMiddleIndex = nil + } + viewModel.hashtagStatusIDList.insert(contentsOf: newStatusIDList, at: indexToInsert + 1) + viewModel.hashtagStatusIDList.removeDuplicates() + } else { + // Only when the hashtagStatusIDList changes, we could not find the `loadMiddleState` index + // Then there is no need to set a `loadMiddleState` cell + viewModel.needLoadMiddleIndex = nil + } + + let newPredicate = Toot.predicate(domain: activeMastodonAuthenticationBox.domain, ids: viewModel.hashtagStatusIDList) + viewModel.timelinePredicate.send(newPredicate) + + } + .store(in: &viewModel.disposeBag) + } + } + + class Fail: HashtagTimelineViewModel.LoadMiddleState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + // guard let viewModel = viewModel else { return false } + return stateClass == Loading.self + } + } + + class Success: HashtagTimelineViewModel.LoadMiddleState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + // guard let viewModel = viewModel else { return false } + return false + } + } + +} + diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadOldestState.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadOldestState.swift new file mode 100644 index 00000000..f503420a --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel+LoadOldestState.swift @@ -0,0 +1,121 @@ +// +// HashtagTimelineViewModel+LoadOldestState.swift +// Mastodon +// +// Created by BradGao on 2021/3/31. +// + +import os.log +import Foundation +import GameplayKit +import CoreDataStack + +extension HashtagTimelineViewModel { + class LoadOldestState: GKState { + weak var viewModel: HashtagTimelineViewModel? + + init(viewModel: HashtagTimelineViewModel) { + self.viewModel = viewModel + } + + override func didEnter(from previousState: GKState?) { + os_log("%{public}s[%{public}ld], %{public}s: enter %s, previous: %s", ((#file as NSString).lastPathComponent), #line, #function, self.debugDescription, previousState.debugDescription) + viewModel?.loadOldestStateMachinePublisher.send(self) + } + } +} + +extension HashtagTimelineViewModel.LoadOldestState { + class Initial: HashtagTimelineViewModel.LoadOldestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + guard let viewModel = viewModel else { return false } + guard !(viewModel.fetchedResultsController.fetchedObjects ?? []).isEmpty else { return false } + return stateClass == Loading.self + } + } + + class Loading: HashtagTimelineViewModel.LoadOldestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Fail.self || stateClass == Idle.self || stateClass == NoMore.self + } + + override func didEnter(from previousState: GKState?) { + super.didEnter(from: previousState) + guard let viewModel = viewModel, let stateMachine = stateMachine else { return } + guard let activeMastodonAuthenticationBox = viewModel.context.authenticationService.activeMastodonAuthenticationBox.value else { + assertionFailure() + stateMachine.enter(Fail.self) + return + } + + guard let last = viewModel.fetchedResultsController.fetchedObjects?.last else { + stateMachine.enter(Idle.self) + return + } + + // TODO: only set large count when using Wi-Fi + let maxID = last.id + viewModel.context.apiService.hashtagTimeline( + domain: activeMastodonAuthenticationBox.domain, + maxID: maxID, + hashtag: viewModel.hashTag, + authorizationBox: activeMastodonAuthenticationBox) + .delay(for: .seconds(1), scheduler: DispatchQueue.main) + .receive(on: DispatchQueue.main) + .sink { completion in +// viewModel.homeTimelineNavigationBarState.receiveCompletion(completion: completion) + switch completion { + case .failure(let error): + os_log("%{public}s[%{public}ld], %{public}s: fetch toots failed. %s", ((#file as NSString).lastPathComponent), #line, #function, error.localizedDescription) + case .finished: + // handle isFetchingLatestTimeline in fetch controller delegate + break + } + } receiveValue: { response in + let toots = response.value + // enter no more state when no new toots + if toots.isEmpty || (toots.count == 1 && toots[0].id == maxID) { + stateMachine.enter(NoMore.self) + } else { + stateMachine.enter(Idle.self) + } + let newStatusIDList = toots.map { $0.id } + viewModel.hashtagStatusIDList.append(contentsOf: newStatusIDList) + let newPredicate = Toot.predicate(domain: activeMastodonAuthenticationBox.domain, ids: viewModel.hashtagStatusIDList) + viewModel.timelinePredicate.send(newPredicate) + } + .store(in: &viewModel.disposeBag) + } + } + + class Fail: HashtagTimelineViewModel.LoadOldestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self || stateClass == Idle.self + } + } + + class Idle: HashtagTimelineViewModel.LoadOldestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + return stateClass == Loading.self + } + } + + class NoMore: HashtagTimelineViewModel.LoadOldestState { + override func isValidNextState(_ stateClass: AnyClass) -> Bool { + // reset state if needs + return stateClass == Idle.self + } + + override func didEnter(from previousState: GKState?) { + guard let viewModel = viewModel else { return } + guard let diffableDataSource = viewModel.diffableDataSource else { + assertionFailure() + return + } + var snapshot = diffableDataSource.snapshot() + snapshot.deleteItems([.bottomLoader]) + diffableDataSource.apply(snapshot) + } + } +} + diff --git a/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel.swift b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel.swift new file mode 100644 index 00000000..19144d19 --- /dev/null +++ b/Mastodon/Scene/HashtagTimeline/HashtagTimelineViewModel.swift @@ -0,0 +1,112 @@ +// +// HashtagTimelineViewModel.swift +// Mastodon +// +// Created by BradGao on 2021/3/30. +// + +import os.log +import UIKit +import Combine +import CoreData +import CoreDataStack +import GameplayKit +import MastodonSDK + +final class HashtagTimelineViewModel: NSObject { + + let hashTag: String + + var disposeBag = Set() + + var hashtagStatusIDList = [Mastodon.Entity.Status.ID]() + var needLoadMiddleIndex: Int? = nil + + // input + let context: AppContext + let fetchedResultsController: NSFetchedResultsController + let isFetchingLatestTimeline = CurrentValueSubject(false) + let timelinePredicate = CurrentValueSubject(nil) + + weak var contentOffsetAdjustableTimelineViewControllerDelegate: ContentOffsetAdjustableTimelineViewControllerDelegate? + weak var tableView: UITableView? + + // output + // top loader + private(set) lazy var loadLatestStateMachine: GKStateMachine = { + // exclude timeline middle fetcher state + let stateMachine = GKStateMachine(states: [ + LoadLatestState.Initial(viewModel: self), + LoadLatestState.Loading(viewModel: self), + LoadLatestState.Fail(viewModel: self), + LoadLatestState.Idle(viewModel: self), + ]) + stateMachine.enter(LoadLatestState.Initial.self) + return stateMachine + }() + lazy var loadLatestStateMachinePublisher = CurrentValueSubject(nil) + // bottom loader + private(set) lazy var loadoldestStateMachine: GKStateMachine = { + // exclude timeline middle fetcher state + let stateMachine = GKStateMachine(states: [ + LoadOldestState.Initial(viewModel: self), + LoadOldestState.Loading(viewModel: self), + LoadOldestState.Fail(viewModel: self), + LoadOldestState.Idle(viewModel: self), + LoadOldestState.NoMore(viewModel: self), + ]) + stateMachine.enter(LoadOldestState.Initial.self) + return stateMachine + }() + lazy var loadOldestStateMachinePublisher = CurrentValueSubject(nil) + // middle loader + let loadMiddleSateMachineList = CurrentValueSubject<[NSManagedObjectID: GKStateMachine], Never>([:]) // TimelineIndex.objectID : middle loading state machine + var diffableDataSource: UITableViewDiffableDataSource? + var cellFrameCache = NSCache() + + + init(context: AppContext, hashTag: String) { + self.context = context + self.hashTag = hashTag + self.fetchedResultsController = { + let fetchRequest = Toot.sortedFetchRequest + fetchRequest.returnsObjectsAsFaults = false + fetchRequest.fetchBatchSize = 20 + let controller = NSFetchedResultsController( + fetchRequest: fetchRequest, + managedObjectContext: context.managedObjectContext, + sectionNameKeyPath: nil, + cacheName: nil + ) + + return controller + }() + super.init() + + fetchedResultsController.delegate = self + + timelinePredicate + .receive(on: DispatchQueue.main) + .compactMap { $0 } + .sink { [weak self] predicate in + guard let self = self else { return } + self.fetchedResultsController.fetchRequest.predicate = predicate + do { + self.diffableDataSource?.defaultRowAnimation = .fade + try self.fetchedResultsController.performFetch() + DispatchQueue.main.asyncAfter(deadline: .now() + 3) { [weak self] in + guard let self = self else { return } + self.diffableDataSource?.defaultRowAnimation = .automatic + } + } catch { + assertionFailure(error.localizedDescription) + } + } + .store(in: &disposeBag) + } + + deinit { + os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s:", ((#file as NSString).lastPathComponent), #line, #function) + } + +} diff --git a/Mastodon/Scene/Share/View/Content/StatusView.swift b/Mastodon/Scene/Share/View/Content/StatusView.swift index 6d7800b0..7db897f6 100644 --- a/Mastodon/Scene/Share/View/Content/StatusView.swift +++ b/Mastodon/Scene/Share/View/Content/StatusView.swift @@ -15,6 +15,7 @@ protocol StatusViewDelegate: class { func statusView(_ statusView: StatusView, contentWarningActionButtonPressed button: UIButton) func statusView(_ statusView: StatusView, playerContainerView: PlayerContainerView, contentWarningOverlayViewDidPressed contentWarningOverlayView: ContentWarningOverlayView) func statusView(_ statusView: StatusView, pollVoteButtonPressed button: UIButton) + func statusView(_ statusView: StatusView, didSelectActiveEntity activeLabel: ActiveLabel, entity: ActiveEntity) } final class StatusView: UIView { @@ -400,6 +401,7 @@ extension StatusView { statusContentWarningContainerStackViewBottomLayoutConstraint.isActive = false playerContainerView.delegate = self + activeTextLabel.delegate = self contentWarningActionButton.addTarget(self, action: #selector(StatusView.contentWarningActionButtonPressed(_:)), for: .touchUpInside) pollVoteButton.addTarget(self, action: #selector(StatusView.pollVoteButtonPressed(_:)), for: .touchUpInside) @@ -467,6 +469,13 @@ extension StatusView: AvatarConfigurableView { var configurableVerifiedBadgeImageView: UIImageView? { nil } } +// MARK: - ActiveLabelDelegate +extension StatusView: ActiveLabelDelegate { + func activeLabel(_ activeLabel: ActiveLabel, didSelectActiveEntity entity: ActiveEntity) { + delegate?.statusView(self, didSelectActiveEntity: activeLabel, entity: entity) + } +} + #if canImport(SwiftUI) && DEBUG import SwiftUI diff --git a/Mastodon/Scene/Share/View/TableviewCell/StatusTableViewCell.swift b/Mastodon/Scene/Share/View/TableviewCell/StatusTableViewCell.swift index 5f9bdf65..cb74bbf1 100644 --- a/Mastodon/Scene/Share/View/TableviewCell/StatusTableViewCell.swift +++ b/Mastodon/Scene/Share/View/TableviewCell/StatusTableViewCell.swift @@ -11,6 +11,7 @@ import AVKit import Combine import CoreData import CoreDataStack +import ActiveLabel protocol StatusTableViewCellDelegate: class { var context: AppContext! { get } @@ -29,6 +30,8 @@ protocol StatusTableViewCellDelegate: class { func statusTableViewCell(_ cell: StatusTableViewCell, statusView: StatusView, pollVoteButtonPressed button: UIButton) func statusTableViewCell(_ cell: StatusTableViewCell, pollTableView: PollTableView, didSelectRowAt indexPath: IndexPath) + + func statusTableViewCell(_ cell: StatusTableViewCell, statusView: StatusView, didSelectActiveEntity entity: ActiveEntity) } extension StatusTableViewCellDelegate { @@ -206,6 +209,10 @@ extension StatusTableViewCell: StatusViewDelegate { delegate?.statusTableViewCell(self, statusView: statusView, pollVoteButtonPressed: button) } + func statusView(_ statusView: StatusView, didSelectActiveEntity activeLabel: ActiveLabel, entity: ActiveEntity) { + delegate?.statusTableViewCell(self, statusView: statusView, didSelectActiveEntity: entity) + } + } // MARK: - MosaicImageViewDelegate diff --git a/Mastodon/Service/APIService/APIService+HashtagTimeline.swift b/Mastodon/Service/APIService/APIService+HashtagTimeline.swift new file mode 100644 index 00000000..d3e9d620 --- /dev/null +++ b/Mastodon/Service/APIService/APIService+HashtagTimeline.swift @@ -0,0 +1,70 @@ +// +// APIService+HashtagTimeline.swift +// Mastodon +// +// Created by BradGao on 2021/3/30. +// + +import Foundation +import Combine +import CoreData +import CoreDataStack +import CommonOSLog +import DateToolsSwift +import MastodonSDK + +extension APIService { + + func hashtagTimeline( + domain: String, + sinceID: Mastodon.Entity.Status.ID? = nil, + maxID: Mastodon.Entity.Status.ID? = nil, + limit: Int = onceRequestTootMaxCount, + local: Bool? = nil, + hashtag: String, + authorizationBox: AuthenticationService.MastodonAuthenticationBox + ) -> AnyPublisher, Error> { + let authorization = authorizationBox.userAuthorization + let requestMastodonUserID = authorizationBox.userID + let query = Mastodon.API.Timeline.HashtagTimelineQuery( + maxID: maxID, + sinceID: sinceID, + minID: nil, // prefer sinceID + limit: limit, + local: local, + onlyMedia: false + ) + + return Mastodon.API.Timeline.hashtag( + session: session, + domain: domain, + query: query, + hashtag: hashtag, + authorization: authorization + ) + .flatMap { response -> AnyPublisher, Error> in + return APIService.Persist.persistStatus( + managedObjectContext: self.backgroundManagedObjectContext, + domain: domain, + query: query, + response: response, + persistType: .lookUp, + requestMastodonUserID: requestMastodonUserID, + log: OSLog.api + ) + .setFailureType(to: Error.self) + .tryMap { result -> Mastodon.Response.Content<[Mastodon.Entity.Status]> in + switch result { + case .success: + return response + case .failure(let error): + throw error + } + } + .eraseToAnyPublisher() + } + .eraseToAnyPublisher() + } + +} + diff --git a/MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Timeline.swift b/MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Timeline.swift index 6ab89712..a9b5c4f1 100644 --- a/MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Timeline.swift +++ b/MastodonSDK/Sources/MastodonSDK/API/Mastodon+API+Timeline.swift @@ -18,7 +18,7 @@ extension Mastodon.API.Timeline { } static func hashtagTimelineEndpointURL(domain: String, hashtag: String) -> URL { return Mastodon.API.endpointURL(domain: domain) - .appendingPathComponent("tag/\(hashtag)") + .appendingPathComponent("timelines/tag/\(hashtag)") } /// View public timeline statuses @@ -98,17 +98,19 @@ extension Mastodon.API.Timeline { /// - domain: Mastodon instance domain. e.g. "example.com" /// - query: `HashtagTimelineQuery` with query parameters /// - hashtag: Content of a #hashtag, not including # symbol. + /// - authorization: User token, auth is required if public preview is disabled /// - Returns: `AnyPublisher` contains `Token` nested in the response public static func hashtag( session: URLSession, domain: String, query: HashtagTimelineQuery, - hashtag: String + hashtag: String, + authorization: Mastodon.API.OAuth.Authorization? ) -> AnyPublisher, Error> { let request = Mastodon.API.get( url: hashtagTimelineEndpointURL(domain: domain, hashtag: hashtag), query: query, - authorization: nil + authorization: authorization ) return session.dataTaskPublisher(for: request) .tryMap { data, response in