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//
// SettingsDataSource.swift
// MullvadVPN
//
// Created by pronebird on 19/10/2021.
// Copyright © 2025 Mullvad VPN AB. All rights reserved.
//
import MullvadSettings
import UIKit
final class SettingsDataSource: UITableViewDiffableDataSource<SettingsDataSource.Section, SettingsDataSource.Item>,
UITableViewDelegate
{
enum CellReuseIdentifier: String, CaseIterable {
case basic
case changelog
var reusableViewClass: AnyClass {
SettingsCell.self
}
var cellStyle: UITableViewCell.CellStyle {
switch self {
case .basic: .default
case .changelog: .subtitle
}
}
}
private enum HeaderFooterReuseIdentifier: String, CaseIterable, HeaderFooterIdentifierProtocol {
case primary
case spacer
var headerFooterClass: AnyClass {
switch self {
case .primary:
UITableViewHeaderFooterView.self
case .spacer:
EmptyTableViewHeaderFooterView.self
}
}
}
enum Section: String {
case vpnSettings
case apiAccess
case version
case problemReport
case language
}
enum Item: String {
case vpnSettings
case changelog
case problemReport
case faq
case apiAccess
case daita
case multihop
case language
var accessibilityIdentifier: AccessibilityIdentifier {
switch self {
case .vpnSettings:
.vpnSettingsCell
case .changelog:
.versionCell
case .problemReport:
.problemReportCell
case .faq:
.faqCell
case .apiAccess:
.apiAccessCell
case .daita:
.daitaCell
case .multihop:
.multihopCell
case .language:
.languageCell
}
}
var reuseIdentifier: CellReuseIdentifier {
switch self {
case .changelog: .changelog
default: .basic
}
}
}
private let interactor: SettingsInteractor
private var storedAccountData: StoredAccountData?
private let settingsCellFactory: SettingsCellFactory
private weak var tableView: UITableView?
weak var delegate: SettingsDataSourceDelegate?
init(tableView: UITableView, interactor: SettingsInteractor) {
self.tableView = tableView
self.interactor = interactor
let settingsCellFactory = SettingsCellFactory(tableView: tableView, interactor: interactor)
self.settingsCellFactory = settingsCellFactory
super.init(tableView: tableView) { _, indexPath, itemIdentifier in
settingsCellFactory.makeCell(for: itemIdentifier, indexPath: indexPath)
}
tableView.sectionFooterHeight = 0
tableView.tableHeaderView = UIView(
frame: CGRect(
origin: .zero,
size: CGSize(width: 0, height: UIMetrics.TableView.emptyHeaderHeight)
))
tableView.delegate = self
registerClasses()
updateDataSnapshot()
interactor.didUpdateSettings = { [weak self] in
self?.updateDataSnapshot()
}
storedAccountData = interactor.deviceState.accountData
}
func reload() {
settingsCellFactory.viewModel = SettingsViewModel(from: interactor.tunnelSettings)
var snapshot = snapshot()
snapshot.reconfigureItems(snapshot.itemIdentifiers)
apply(snapshot, animatingDifferences: false)
}
// MARK: - UITableViewDelegate
func tableView(_ tableView: UITableView, shouldHighlightRowAt indexPath: IndexPath) -> Bool {
true
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
guard let item = itemIdentifier(for: indexPath) else { return }
delegate?.didSelectItem(item: item)
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
tableView.dequeueReusableHeaderFooterView(
withIdentifier: HeaderFooterReuseIdentifier.spacer.rawValue
)
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
guard let section = sectionIdentifier(for: section) else { return 0 }
return switch section {
case .vpnSettings:
0
default:
UIMetrics.TableView.sectionSpacing
}
}
// MARK: - Private
private func registerClasses() {
HeaderFooterReuseIdentifier.allCases.forEach { reuseIdentifier in
tableView?.register(
reuseIdentifier.headerFooterClass,
forHeaderFooterViewReuseIdentifier: reuseIdentifier.rawValue
)
}
}
private func updateDataSnapshot() {
var snapshot = NSDiffableDataSourceSnapshot<Section, Item>()
if interactor.deviceState.isLoggedIn {
snapshot.appendSections([.vpnSettings])
snapshot.appendItems(
[
.daita,
.multihop,
.vpnSettings,
], toSection: .vpnSettings)
}
#if DEBUG
snapshot.appendSections([.language])
snapshot.appendItems([.language], toSection: .language)
#endif
snapshot.appendSections([.apiAccess])
snapshot.appendItems([.apiAccess], toSection: .apiAccess)
snapshot.appendSections([.version, .problemReport])
snapshot.appendItems([.changelog], toSection: .version)
snapshot.appendItems([.problemReport, .faq], toSection: .problemReport)
apply(snapshot)
}
}
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