mastodon-ios/Mastodon/Diffiable/Section/PickServerSection.swift

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//
// PickServerSection.swift
// Mastodon
//
// Created by Cirno MainasuK on 2021/3/5.
//
import UIKit
import MastodonSDK
import Kanna
import AlamofireImage
enum PickServerSection: Equatable, Hashable {
case header
case category
case search
case servers
}
extension PickServerSection {
static func tableViewDiffableDataSource(
for tableView: UITableView,
dependency: NeedsDependency,
pickServerCategoriesCellDelegate: PickServerCategoriesCellDelegate,
pickServerSearchCellDelegate: PickServerSearchCellDelegate,
pickServerCellDelegate: PickServerCellDelegate
) -> UITableViewDiffableDataSource<PickServerSection, PickServerItem> {
2021-04-09 05:05:10 +02:00
UITableViewDiffableDataSource(tableView: tableView) { [
weak dependency,
weak pickServerCategoriesCellDelegate,
weak pickServerSearchCellDelegate,
weak pickServerCellDelegate
] tableView, indexPath, item -> UITableViewCell? in
guard let dependency = dependency else { return nil }
switch item {
case .header:
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: PickServerTitleCell.self), for: indexPath) as! PickServerTitleCell
return cell
case .categoryPicker(let items):
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: PickServerCategoriesCell.self), for: indexPath) as! PickServerCategoriesCell
cell.delegate = pickServerCategoriesCellDelegate
cell.diffableDataSource = CategoryPickerSection.collectionViewDiffableDataSource(
for: cell.collectionView,
dependency: dependency
)
var snapshot = NSDiffableDataSourceSnapshot<CategoryPickerSection, CategoryPickerItem>()
snapshot.appendSections([.main])
snapshot.appendItems(items, toSection: .main)
cell.diffableDataSource?.apply(snapshot, animatingDifferences: false, completion: nil)
return cell
case .search:
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: PickServerSearchCell.self), for: indexPath) as! PickServerSearchCell
cell.delegate = pickServerSearchCellDelegate
return cell
case .server(let server, let attribute):
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: PickServerCell.self), for: indexPath) as! PickServerCell
PickServerSection.configure(cell: cell, server: server, attribute: attribute)
cell.delegate = pickServerCellDelegate
return cell
case .loader(let attribute):
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: PickServerLoaderTableViewCell.self), for: indexPath) as! PickServerLoaderTableViewCell
PickServerSection.configure(cell: cell, attribute: attribute)
return cell
}
}
}
}
extension PickServerSection {
static func configure(cell: PickServerCell, server: Mastodon.Entity.Server, attribute: PickServerItem.ServerItemAttribute) {
cell.domainLabel.text = server.domain
cell.descriptionLabel.text = {
guard let html = try? HTML(html: server.description, encoding: .utf8) else {
return server.description
}
return html.text ?? server.description
}()
cell.langValueLabel.text = server.language.uppercased()
cell.usersValueLabel.text = parseUsersCount(server.totalUsers)
cell.categoryValueLabel.text = server.category.uppercased()
cell.updateExpandMode(mode: attribute.isExpand ? .expand : .collapse)
attribute.isLast
.receive(on: DispatchQueue.main)
.sink { [weak cell] isLast in
guard let cell = cell else { return }
if isLast {
cell.containerView.layer.maskedCorners = [
.layerMinXMaxYCorner,
.layerMaxXMaxYCorner
]
cell.containerView.layer.cornerCurve = .continuous
cell.containerView.layer.cornerRadius = MastodonPickServerAppearance.tableViewCornerRadius
cell.containerView.layer.masksToBounds = true
} else {
cell.containerView.layer.cornerRadius = 0
cell.containerView.layer.masksToBounds = false
}
}
.store(in: &cell.disposeBag)
cell.expandMode
.receive(on: DispatchQueue.main)
.sink { mode in
switch mode {
case .collapse:
// do nothing
break
case .expand:
let placeholderImage = UIImage.placeholder(size: cell.thumbnailImageView.frame.size, color: .systemFill)
.af.imageRounded(withCornerRadius: 3.0, divideRadiusByImageScale: false)
guard let proxiedThumbnail = server.proxiedThumbnail,
let url = URL(string: proxiedThumbnail) else {
cell.thumbnailImageView.image = placeholderImage
cell.thumbnailActivityIdicator.stopAnimating()
return
}
cell.thumbnailImageView.isHidden = false
cell.thumbnailActivityIdicator.startAnimating()
cell.thumbnailImageView.af.setImage(
withURL: url,
placeholderImage: placeholderImage,
filter: AspectScaledToFillSizeWithRoundedCornersFilter(size: cell.thumbnailImageView.frame.size, radius: 3),
imageTransition: .crossDissolve(0.33),
completion: { [weak cell] response in
switch response.result {
case .success, .failure:
cell?.thumbnailActivityIdicator.stopAnimating()
}
}
)
}
}
.store(in: &cell.disposeBag)
}
private static func parseUsersCount(_ usersCount: Int) -> String {
switch usersCount {
case 0..<1000:
return "\(usersCount)"
default:
let usersCountInThousand = Float(usersCount) / 1000.0
return String(format: "%.1fK", usersCountInThousand)
}
}
}
extension PickServerSection {
static func configure(cell: PickServerLoaderTableViewCell, attribute: PickServerItem.LoaderItemAttribute) {
if attribute.isLast {
cell.containerView.layer.maskedCorners = [
.layerMinXMaxYCorner,
.layerMaxXMaxYCorner
]
cell.containerView.layer.cornerCurve = .continuous
cell.containerView.layer.cornerRadius = MastodonPickServerAppearance.tableViewCornerRadius
cell.containerView.layer.masksToBounds = true
} else {
cell.containerView.layer.cornerRadius = 0
cell.containerView.layer.masksToBounds = false
}
attribute.isNoResult ? cell.stopAnimating() : cell.startAnimating()
cell.emptyStatusLabel.isHidden = !attribute.isNoResult
}
}