forked from zelo72/mastodon-ios
355 lines
18 KiB
Swift
355 lines
18 KiB
Swift
//
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// TimelineSection.swift
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// Mastodon
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//
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// Created by sxiaojian on 2021/1/27.
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//
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import Combine
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import CoreData
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import CoreDataStack
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import os.log
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import UIKit
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enum StatusSection: Equatable, Hashable {
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case main
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}
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extension StatusSection {
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static func tableViewDiffableDataSource(
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for tableView: UITableView,
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dependency: NeedsDependency,
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managedObjectContext: NSManagedObjectContext,
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timestampUpdatePublisher: AnyPublisher<Date, Never>,
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statusTableViewCellDelegate: StatusTableViewCellDelegate,
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timelineMiddleLoaderTableViewCellDelegate: TimelineMiddleLoaderTableViewCellDelegate?
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) -> UITableViewDiffableDataSource<StatusSection, Item> {
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UITableViewDiffableDataSource(tableView: tableView) { [weak statusTableViewCellDelegate, weak timelineMiddleLoaderTableViewCellDelegate] tableView, indexPath, item -> UITableViewCell? in
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guard let statusTableViewCellDelegate = statusTableViewCellDelegate else { return UITableViewCell() }
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switch item {
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case .homeTimelineIndex(objectID: let objectID, let attribute):
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let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: StatusTableViewCell.self), for: indexPath) as! StatusTableViewCell
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// configure cell
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managedObjectContext.performAndWait {
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let timelineIndex = managedObjectContext.object(with: objectID) as! HomeTimelineIndex
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StatusSection.configure(cell: cell, readableLayoutFrame: tableView.readableContentGuide.layoutFrame, timestampUpdatePublisher: timestampUpdatePublisher, toot: timelineIndex.toot, requestUserID: timelineIndex.userID, statusItemAttribute: attribute)
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}
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cell.delegate = statusTableViewCellDelegate
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return cell
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case .toot(let objectID, let attribute):
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let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: StatusTableViewCell.self), for: indexPath) as! StatusTableViewCell
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let activeMastodonAuthenticationBox = dependency.context.authenticationService.activeMastodonAuthenticationBox.value
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let requestUserID = activeMastodonAuthenticationBox?.userID ?? ""
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// configure cell
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managedObjectContext.performAndWait {
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let toot = managedObjectContext.object(with: objectID) as! Toot
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StatusSection.configure(cell: cell, readableLayoutFrame: tableView.readableContentGuide.layoutFrame, timestampUpdatePublisher: timestampUpdatePublisher, toot: toot, requestUserID: requestUserID, statusItemAttribute: attribute)
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}
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cell.delegate = statusTableViewCellDelegate
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return cell
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case .publicMiddleLoader(let upperTimelineTootID):
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let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self), for: indexPath) as! TimelineMiddleLoaderTableViewCell
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cell.delegate = timelineMiddleLoaderTableViewCellDelegate
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timelineMiddleLoaderTableViewCellDelegate?.configure(cell: cell, upperTimelineTootID: upperTimelineTootID, timelineIndexobjectID: nil)
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return cell
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case .homeMiddleLoader(let upperTimelineIndexObjectID):
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let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: TimelineMiddleLoaderTableViewCell.self), for: indexPath) as! TimelineMiddleLoaderTableViewCell
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cell.delegate = timelineMiddleLoaderTableViewCellDelegate
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timelineMiddleLoaderTableViewCellDelegate?.configure(cell: cell, upperTimelineTootID: nil, timelineIndexobjectID: upperTimelineIndexObjectID)
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return cell
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case .bottomLoader:
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let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: TimelineBottomLoaderTableViewCell.self), for: indexPath) as! TimelineBottomLoaderTableViewCell
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cell.activityIndicatorView.startAnimating()
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return cell
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}
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}
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}
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}
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extension StatusSection {
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static func configure(
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cell: StatusTableViewCell,
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readableLayoutFrame: CGRect?,
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timestampUpdatePublisher: AnyPublisher<Date, Never>,
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toot: Toot,
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requestUserID: String,
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statusItemAttribute: Item.StatusAttribute
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) {
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// set header
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cell.statusView.headerContainerStackView.isHidden = toot.reblog == nil
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cell.statusView.headerInfoLabel.text = {
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let author = toot.author
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let name = author.displayName.isEmpty ? author.username : author.displayName
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return L10n.Common.Controls.Status.userBoosted(name)
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}()
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// set name username avatar
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cell.statusView.nameLabel.text = {
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let author = (toot.reblog ?? toot).author
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return author.displayName.isEmpty ? author.username : author.displayName
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}()
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cell.statusView.usernameLabel.text = "@" + (toot.reblog ?? toot).author.acct
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cell.statusView.configure(with: AvatarConfigurableViewConfiguration(avatarImageURL: (toot.reblog ?? toot).author.avatarImageURL()))
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// set text
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cell.statusView.activeTextLabel.config(content: (toot.reblog ?? toot).content)
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// set status text content warning
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let spoilerText = (toot.reblog ?? toot).spoilerText ?? ""
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let isStatusTextSensitive = statusItemAttribute.isStatusTextSensitive
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cell.statusView.isStatusTextSensitive = isStatusTextSensitive
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cell.statusView.updateContentWarningDisplay(isHidden: !isStatusTextSensitive)
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cell.statusView.contentWarningTitle.text = {
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if spoilerText.isEmpty {
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return L10n.Common.Controls.Status.statusContentWarning
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} else {
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return L10n.Common.Controls.Status.statusContentWarning + ": \(spoilerText)"
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}
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}()
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// prepare media attachments
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let mediaAttachments = Array((toot.reblog ?? toot).mediaAttachments ?? []).sorted { $0.index.compare($1.index) == .orderedAscending }
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// set image
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let mosiacImageViewModel = MosaicImageViewModel(mediaAttachments: mediaAttachments)
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let imageViewMaxSize: CGSize = {
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let maxWidth: CGFloat = {
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// use timelinePostView width as container width
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// that width follows readable width and keep constant width after rotate
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let containerFrame = readableLayoutFrame ?? cell.statusView.frame
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var containerWidth = containerFrame.width
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containerWidth -= 10
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containerWidth -= StatusView.avatarImageSize.width
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return containerWidth
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}()
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let scale: CGFloat = {
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switch mosiacImageViewModel.metas.count {
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case 1: return 1.3
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default: return 0.7
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}
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}()
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return CGSize(width: maxWidth, height: maxWidth * scale)
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}()
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if mosiacImageViewModel.metas.count == 1 {
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let meta = mosiacImageViewModel.metas[0]
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let imageView = cell.statusView.statusMosaicImageViewContainer.setupImageView(aspectRatio: meta.size, maxSize: imageViewMaxSize)
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imageView.af.setImage(
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withURL: meta.url,
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placeholderImage: UIImage.placeholder(color: .systemFill),
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imageTransition: .crossDissolve(0.2)
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)
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} else {
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let imageViews = cell.statusView.statusMosaicImageViewContainer.setupImageViews(count: mosiacImageViewModel.metas.count, maxHeight: imageViewMaxSize.height)
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for (i, imageView) in imageViews.enumerated() {
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let meta = mosiacImageViewModel.metas[i]
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imageView.af.setImage(
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withURL: meta.url,
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placeholderImage: UIImage.placeholder(color: .systemFill),
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imageTransition: .crossDissolve(0.2)
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)
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}
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}
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cell.statusView.statusMosaicImageViewContainer.isHidden = mosiacImageViewModel.metas.isEmpty
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let isStatusSensitive = statusItemAttribute.isStatusSensitive
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cell.statusView.statusMosaicImageViewContainer.blurVisualEffectView.effect = isStatusSensitive ? MosaicImageViewContainer.blurVisualEffect : nil
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cell.statusView.statusMosaicImageViewContainer.vibrancyVisualEffectView.alpha = isStatusSensitive ? 1.0 : 0.0
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// set audio
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if let audioAttachment = mediaAttachments.filter({ $0.type == .audio }).first {
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cell.statusView.audioView.isHidden = false
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AudioContainerViewModel.configure(cell: cell, audioAttachment: audioAttachment)
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} else {
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cell.statusView.audioView.isHidden = true
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}
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// set poll
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let poll = (toot.reblog ?? toot).poll
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StatusSection.configure(
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cell: cell,
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poll: poll,
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requestUserID: requestUserID,
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updateProgressAnimated: false,
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timestampUpdatePublisher: timestampUpdatePublisher
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)
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if let poll = poll {
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ManagedObjectObserver.observe(object: poll)
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.sink { _ in
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// do nothing
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} receiveValue: { change in
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guard case .update(let object) = change.changeType,
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let newPoll = object as? Poll else { return }
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StatusSection.configure(
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cell: cell,
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poll: newPoll,
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requestUserID: requestUserID,
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updateProgressAnimated: true,
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timestampUpdatePublisher: timestampUpdatePublisher
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)
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}
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.store(in: &cell.disposeBag)
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}
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// toolbar
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let replyCountTitle: String = {
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let count = (toot.reblog ?? toot).repliesCount?.intValue ?? 0
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return StatusSection.formattedNumberTitleForActionButton(count)
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}()
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cell.statusView.actionToolbarContainer.replyButton.setTitle(replyCountTitle, for: .normal)
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let isLike = (toot.reblog ?? toot).favouritedBy.flatMap { $0.contains(where: { $0.id == requestUserID }) } ?? false
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let favoriteCountTitle: String = {
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let count = (toot.reblog ?? toot).favouritesCount.intValue
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return StatusSection.formattedNumberTitleForActionButton(count)
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}()
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cell.statusView.actionToolbarContainer.starButton.setTitle(favoriteCountTitle, for: .normal)
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cell.statusView.actionToolbarContainer.isStarButtonHighlight = isLike
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// set date
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let createdAt = (toot.reblog ?? toot).createdAt
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cell.statusView.dateLabel.text = createdAt.shortTimeAgoSinceNow
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timestampUpdatePublisher
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.sink { _ in
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cell.statusView.dateLabel.text = createdAt.shortTimeAgoSinceNow
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}
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.store(in: &cell.disposeBag)
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// observe model change
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ManagedObjectObserver.observe(object: toot.reblog ?? toot)
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.receive(on: DispatchQueue.main)
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.sink { _ in
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// do nothing
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} receiveValue: { change in
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guard case .update(let object) = change.changeType,
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let newToot = object as? Toot else { return }
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let targetToot = newToot.reblog ?? newToot
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let isLike = targetToot.favouritedBy.flatMap { $0.contains(where: { $0.id == requestUserID }) } ?? false
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let favoriteCount = targetToot.favouritesCount.intValue
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let favoriteCountTitle = StatusSection.formattedNumberTitleForActionButton(favoriteCount)
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cell.statusView.actionToolbarContainer.starButton.setTitle(favoriteCountTitle, for: .normal)
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cell.statusView.actionToolbarContainer.isStarButtonHighlight = isLike
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os_log("%{public}s[%{public}ld], %{public}s: like count label for toot %s did update: %ld", (#file as NSString).lastPathComponent, #line, #function, targetToot.id, favoriteCount)
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}
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.store(in: &cell.disposeBag)
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}
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static func configure(
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cell: StatusTableViewCell,
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poll: Poll?,
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requestUserID: String,
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updateProgressAnimated: Bool,
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timestampUpdatePublisher: AnyPublisher<Date, Never>
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) {
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guard let poll = poll,
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let managedObjectContext = poll.managedObjectContext else {
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cell.statusView.pollTableView.isHidden = true
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cell.statusView.pollStatusStackView.isHidden = true
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cell.statusView.pollVoteButton.isHidden = true
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return
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}
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cell.statusView.pollTableView.isHidden = false
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cell.statusView.pollStatusStackView.isHidden = false
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cell.statusView.pollVoteCountLabel.text = {
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if poll.multiple {
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let count = poll.votersCount?.intValue ?? 0
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if count > 1 {
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return L10n.Common.Controls.Status.Poll.VoterCount.single(count)
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} else {
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return L10n.Common.Controls.Status.Poll.VoterCount.multiple(count)
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}
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} else {
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let count = poll.votesCount.intValue
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if count > 1 {
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return L10n.Common.Controls.Status.Poll.VoteCount.single(count)
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} else {
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return L10n.Common.Controls.Status.Poll.VoteCount.multiple(count)
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}
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}
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}()
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if poll.expired {
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cell.pollCountdownSubscription = nil
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cell.statusView.pollCountdownLabel.text = L10n.Common.Controls.Status.Poll.closed
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} else if let expiresAt = poll.expiresAt {
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cell.statusView.pollCountdownLabel.text = L10n.Common.Controls.Status.Poll.timeLeft(expiresAt.shortTimeAgoSinceNow)
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cell.pollCountdownSubscription = timestampUpdatePublisher
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.sink { _ in
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cell.statusView.pollCountdownLabel.text = L10n.Common.Controls.Status.Poll.timeLeft(expiresAt.shortTimeAgoSinceNow)
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}
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} else {
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assertionFailure()
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cell.pollCountdownSubscription = nil
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cell.statusView.pollCountdownLabel.text = "-"
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}
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cell.statusView.pollTableView.allowsSelection = !poll.expired
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let votedOptions = poll.options.filter { option in
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(option.votedBy ?? Set()).map { $0.id }.contains(requestUserID)
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}
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let didVotedLocal = !votedOptions.isEmpty
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let didVotedRemote = (poll.votedBy ?? Set()).map { $0.id }.contains(requestUserID)
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cell.statusView.pollVoteButton.isEnabled = didVotedLocal
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cell.statusView.pollVoteButton.isHidden = !poll.multiple ? true : (didVotedRemote || poll.expired)
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cell.statusView.pollTableViewDataSource = PollSection.tableViewDiffableDataSource(
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for: cell.statusView.pollTableView,
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managedObjectContext: managedObjectContext
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)
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var snapshot = NSDiffableDataSourceSnapshot<PollSection, PollItem>()
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snapshot.appendSections([.main])
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let pollItems = poll.options
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.sorted(by: { $0.index.intValue < $1.index.intValue })
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.map { option -> PollItem in
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let attribute: PollItem.Attribute = {
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let selectState: PollItem.Attribute.SelectState = {
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// check didVotedRemote later to make the local change possible
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if !votedOptions.isEmpty {
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return votedOptions.contains(option) ? .on : .off
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} else if poll.expired {
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return .none
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} else if didVotedRemote, votedOptions.isEmpty {
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return .none
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} else {
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return .off
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}
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}()
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let voteState: PollItem.Attribute.VoteState = {
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var needsReveal: Bool
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if poll.expired {
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needsReveal = true
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} else if didVotedRemote {
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needsReveal = true
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} else {
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needsReveal = false
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}
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guard needsReveal else { return .hidden }
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let percentage: Double = {
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guard poll.votesCount.intValue > 0 else { return 0.0 }
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return Double(option.votesCount?.intValue ?? 0) / Double(poll.votesCount.intValue)
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}()
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let voted = votedOptions.isEmpty ? true : votedOptions.contains(option)
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return .reveal(voted: voted, percentage: percentage, animated: updateProgressAnimated)
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}()
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return PollItem.Attribute(selectState: selectState, voteState: voteState)
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}()
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let option = PollItem.opion(objectID: option.objectID, attribute: attribute)
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return option
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}
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snapshot.appendItems(pollItems, toSection: .main)
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cell.statusView.pollTableViewDataSource?.apply(snapshot, animatingDifferences: false, completion: nil)
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}
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}
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extension StatusSection {
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private static func formattedNumberTitleForActionButton(_ number: Int?) -> String {
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guard let number = number, number > 0 else { return "" }
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return String(number)
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}
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}
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