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//
// SettingsDataSource.swift
// MullvadVPN
//
// Created by pronebird on 19/10/2021.
// Copyright © 2021 Mullvad VPN AB. All rights reserved.
//
import MullvadSettings
import UIKit
final class SettingsDataSource: UITableViewDiffableDataSource<SettingsDataSource.Section, SettingsDataSource.Item>,
UITableViewDelegate {
enum CellReuseIdentifiers: String, CaseIterable {
case basic
var reusableViewClass: AnyClass {
SettingsCell.self
}
}
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
}
enum Item: String {
case vpnSettings
case changelog
case problemReport
case faq
case apiAccess
case daita
case multihop
var accessibilityIdentifier: AccessibilityIdentifier {
switch self {
case .vpnSettings:
return .vpnSettingsCell
case .changelog:
return .versionCell
case .problemReport:
return .problemReportCell
case .faq:
return .faqCell
case .apiAccess:
return .apiAccessCell
case .daita:
return .daitaCell
case .multihop:
return .multihopCell
}
}
var reuseIdentifier: CellReuseIdentifiers {
.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.delegate = self
settingsCellFactory.delegate = self
registerClasses()
updateDataSnapshot()
interactor.didUpdateDeviceState = { [weak self] _ in
self?.updateDataSnapshot()
}
storedAccountData = interactor.deviceState.accountData
}
func reload(from tunnelSettings: LatestTunnelSettings) {
settingsCellFactory.viewModel = SettingsViewModel(from: 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
)
}
// MARK: - Private
private func registerClasses() {
CellReuseIdentifiers.allCases.forEach { cellIdentifier in
tableView?.register(
cellIdentifier.reusableViewClass,
forCellReuseIdentifier: cellIdentifier.rawValue
)
}
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)
}
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)
}
}
extension SettingsDataSource: @preconcurrency SettingsCellEventHandler {
func showInfo(for button: SettingsInfoButtonItem) {
delegate?.showInfo(for: button)
}
}
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