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//
// SettingsDataSource.swift
// MullvadVPN
//
// Created by pronebird on 19/10/2021.
// Copyright © 2021 Mullvad VPN AB. All rights reserved.
//
import UIKit
final class SettingsDataSource: NSObject, UITableViewDataSource, UITableViewDelegate {
private enum CellReuseIdentifiers: String, CaseIterable {
case accountCell
case basicCell
var reusableViewClass: AnyClass {
switch self {
case .accountCell:
return SettingsAccountCell.self
case .basicCell:
return SettingsCell.self
}
}
}
private enum HeaderFooterReuseIdentifier: String, CaseIterable {
case spacer
var reusableViewClass: AnyClass {
switch self {
case .spacer:
return EmptyTableViewHeaderFooterView.self
}
}
}
enum Section: String {
case main
case version
case problemReport
}
enum Item: String {
case account
case preferences
case shortcuts
case version
case problemReport
case faq
}
private var snapshot = DataSourceSnapshot<Section, Item>()
private let interactor: SettingsInteractor
private var storedAccountData: StoredAccountData?
weak var delegate: SettingsDataSourceDelegate?
weak var tableView: UITableView? {
didSet {
tableView?.delegate = self
tableView?.dataSource = self
registerClasses()
}
}
init(interactor: SettingsInteractor) {
self.interactor = interactor
super.init()
interactor.didUpdateDeviceState = { [weak self] deviceState in
self?.didUpdateDeviceState(deviceState)
}
storedAccountData = interactor.deviceState.accountData
updateDataSnapshot()
}
private func registerClasses() {
CellReuseIdentifiers.allCases.forEach { cellIdentifier in
tableView?.register(
cellIdentifier.reusableViewClass,
forCellReuseIdentifier: cellIdentifier.rawValue
)
}
HeaderFooterReuseIdentifier.allCases.forEach { reuseIdentifier in
tableView?.register(
reuseIdentifier.reusableViewClass,
forHeaderFooterViewReuseIdentifier: reuseIdentifier.rawValue
)
}
}
private func updateDataSnapshot() {
var newSnapshot = DataSourceSnapshot<Section, Item>()
if interactor.deviceState.isLoggedIn {
newSnapshot.appendSections([.main])
newSnapshot.appendItems([.account, .preferences, .shortcuts], in: .main)
}
newSnapshot.appendSections([.version, .problemReport])
newSnapshot.appendItems([.version], in: .version)
newSnapshot.appendItems([.problemReport, .faq], in: .problemReport)
snapshot = newSnapshot
}
// MARK: - UITableViewDataSource
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let sectionIdentifier = snapshot.section(at: section)!
return snapshot.numberOfItems(in: sectionIdentifier) ?? 0
}
func numberOfSections(in tableView: UITableView) -> Int {
return snapshot.numberOfSections()
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let item = snapshot.itemForIndexPath(indexPath)!
switch item {
case .account:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.accountCell.rawValue,
for: indexPath
) as! SettingsAccountCell
cell.titleLabel.text = NSLocalizedString(
"ACCOUNT_CELL_LABEL",
tableName: "Settings",
value: "Account",
comment: ""
)
cell.accountExpiryDate = interactor.deviceState.accountData?.expiry
cell.accessibilityIdentifier = "AccountCell"
cell.disclosureType = .chevron
return cell
case .preferences:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.basicCell.rawValue,
for: indexPath
) as! SettingsCell
cell.titleLabel.text = NSLocalizedString(
"PREFERENCES_CELL_LABEL",
tableName: "Settings",
value: "Preferences",
comment: ""
)
cell.detailTitleLabel.text = nil
cell.accessibilityIdentifier = nil
cell.disclosureType = .chevron
return cell
case .shortcuts:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.basicCell.rawValue,
for: indexPath
) as! SettingsCell
cell.titleLabel.text = NSLocalizedString(
"SHORTCUTS_CELL_LABEL",
tableName: "Settings",
value: "Shortcuts",
comment: ""
)
cell.detailTitleLabel.text = nil
cell.accessibilityIdentifier = nil
cell.disclosureType = .chevron
return cell
case .version:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.basicCell.rawValue,
for: indexPath
) as! SettingsCell
cell.titleLabel.text = NSLocalizedString(
"APP_VERSION_CELL_LABEL",
tableName: "Settings",
value: "App version",
comment: ""
)
cell.detailTitleLabel.text = Bundle.main.productVersion
cell.accessibilityIdentifier = nil
cell.disclosureType = .none
return cell
case .problemReport:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.basicCell.rawValue,
for: indexPath
) as! SettingsCell
cell.titleLabel.text = NSLocalizedString(
"REPORT_PROBLEM_CELL_LABEL",
tableName: "Settings",
value: "Report a problem",
comment: ""
)
cell.detailTitleLabel.text = nil
cell.accessibilityIdentifier = nil
cell.disclosureType = .chevron
return cell
case .faq:
let cell = tableView.dequeueReusableCell(
withIdentifier: CellReuseIdentifiers.basicCell.rawValue,
for: indexPath
) as! SettingsCell
cell.titleLabel.text = NSLocalizedString(
"FAQ_AND_GUIDES_CELL_LABEL",
tableName: "Settings",
value: "FAQ & Guides",
comment: ""
)
cell.detailTitleLabel.text = nil
cell.accessibilityIdentifier = nil
cell.disclosureType = .externalLink
return cell
}
}
// MARK: - UITableViewDelegate
func tableView(_ tableView: UITableView, shouldHighlightRowAt indexPath: IndexPath) -> Bool {
if case .version = snapshot.itemForIndexPath(indexPath) {
return false
} else {
return true
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
guard let item = snapshot.itemForIndexPath(indexPath) else { return }
delegate?.settingsDataSource(self, didSelectItem: item)
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
return tableView
.dequeueReusableHeaderFooterView(
withIdentifier: HeaderFooterReuseIdentifier.spacer
.rawValue
)
}
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return nil
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return UIMetrics.sectionSpacing
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 0
}
// MARK: - Private
private func didUpdateDeviceState(_ deviceState: DeviceState) {
let newAccountData = deviceState.accountData
let oldAccountData = storedAccountData
storedAccountData = newAccountData
// Refresh individual row if expiry changed.
if let newAccountData = newAccountData, let oldAccountData = oldAccountData,
oldAccountData.number == newAccountData.number,
oldAccountData.expiry != newAccountData.expiry
{
tableView?.performBatchUpdates {
if let indexPath = snapshot.indexPathForItem(.account) {
tableView?.reloadRows(at: [indexPath], with: .none)
}
}
return
}
updateDataSnapshot()
tableView?.reloadData()
}
}
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