SideStore/AltStore/Settings/SettingsViewController.swift

//
//  SettingsViewController.swift
//  AltStore
//
//  Created by Riley Testut on 8/31/19.
//  Copyright © 2019 Riley Testut. All rights reserved.
//

import UIKit
import SwiftUI
import SafariServices
import MessageUI
import Intents
import IntentsUI

import AltStoreCore

extension SettingsViewController
{
    fileprivate enum Section: Int, CaseIterable
    {
        case signIn
        case account
        case patreon
        case appRefresh
        case instructions
        case credits
        case debug
    }
    
    fileprivate enum AppRefreshRow: Int, CaseIterable
    {
        case backgroundRefresh
        case noIdleTimeout
        
        @available(iOS 14, *)
        case addToSiri
        
        static var allCases: [AppRefreshRow] {
            guard #available(iOS 14, *) else { return [.backgroundRefresh, .noIdleTimeout] }
            return [.backgroundRefresh, .noIdleTimeout, .addToSiri]
        }
    }
    
    fileprivate enum CreditsRow: Int, CaseIterable
    {
        case developer
        case operations
        case designer
        case softwareLicenses
    }
    
    fileprivate enum DebugRow: Int, CaseIterable
    {
        case sendFeedback
        case refreshAttempts
        case errorLog
        case refreshSideJITServer
        case clearCache
        case resetPairingFile
        case anisetteServers
        case advancedSettings
    
    }
}

final class SettingsViewController: UITableViewController
{
    private var activeTeam: Team?
    
    private var prototypeHeaderFooterView: SettingsHeaderFooterView!
    
    private var debugGestureCounter = 0
    private weak var debugGestureTimer: Timer?
    
    @IBOutlet private var accountNameLabel: UILabel!
    @IBOutlet private var accountEmailLabel: UILabel!
    @IBOutlet private var accountTypeLabel: UILabel!
    
    @IBOutlet private var backgroundRefreshSwitch: UISwitch!
    @IBOutlet private var noIdleTimeoutSwitch: UISwitch!
    
    @IBOutlet private var refreshSideJITServer: UILabel!
    
    @IBOutlet private var versionLabel: UILabel!
    
    override var preferredStatusBarStyle: UIStatusBarStyle {
        return .lightContent
    }
    
    required init?(coder aDecoder: NSCoder)
    {
        super.init(coder: aDecoder)
        
        NotificationCenter.default.addObserver(self, selector: #selector(SettingsViewController.openPatreonSettings(_:)), name: AppDelegate.openPatreonSettingsDeepLinkNotification, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(SettingsViewController.openErrorLog(_:)), name: ToastView.openErrorLogNotification, object: nil)
    }
    
    override func viewDidLoad()
    {
        super.viewDidLoad()
        
        let nib = UINib(nibName: "SettingsHeaderFooterView", bundle: nil)
        self.prototypeHeaderFooterView = nib.instantiate(withOwner: nil, options: nil)[0] as? SettingsHeaderFooterView
        
        self.tableView.register(nib, forHeaderFooterViewReuseIdentifier: "HeaderFooterView")
        
        let debugModeGestureRecognizer = UISwipeGestureRecognizer(target: self, action: #selector(SettingsViewController.handleDebugModeGesture(_:)))
        debugModeGestureRecognizer.delegate = self
        debugModeGestureRecognizer.direction = .up
        debugModeGestureRecognizer.numberOfTouchesRequired = 3
        self.tableView.addGestureRecognizer(debugModeGestureRecognizer)
        
        var versionString: String = ""
        if let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
        {
            versionString += "SideStore \(version)"
            if let xcode = Bundle.main.object(forInfoDictionaryKey: "DTXcode") as? String {
                versionString += " - Xcode \(xcode) - "
                if let build = Bundle.main.object(forInfoDictionaryKey: "DTXcodeBuild") as? String {
                    versionString += "\(build)"
                }
            }
            if let pairing = Bundle.main.object(forInfoDictionaryKey: "ALTPairingFile") as? String {
                let pair_test = pairing == "<insert pairing file here>"
                if !pair_test {
                    versionString += " - \(!pair_test)"
                }
            }
        }
        else
        {
            versionString += "SideStore\t"
        }
        versionString += "\n\(Bundle.Info.appbundleIdentifier)"

        self.versionLabel.text = NSLocalizedString(versionString, comment: "SideStore Version")
        
        self.versionLabel.numberOfLines = 0
        self.versionLabel.lineBreakMode = .byWordWrapping
        self.versionLabel.setNeedsUpdateConstraints()
        
        self.tableView.contentInset.bottom = 40
        
        self.update()
        
        if #available(iOS 15, *), let appearance = self.tabBarController?.tabBar.standardAppearance
        {
            appearance.stackedLayoutAppearance.normal.badgeBackgroundColor = .altPrimary
            self.navigationController?.tabBarItem.scrollEdgeAppearance = appearance
        }
    }
    
    override func viewWillAppear(_ animated: Bool)
    {
        super.viewWillAppear(animated)
        
        self.update()
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "anisetteServers" {
            let controller = UIHostingController(rootView: AnisetteServers(selected: UserDefaults.standard.menuAnisetteURL, errorCallback: {
                ToastView(text: "Cleared adi.pb!", detailText: "You will need to log back into Apple ID in SideStore.").show(in: self)
            }))
            self.show(controller, sender: nil)
        } else {
            super.prepare(for: segue, sender: sender)
        }
    }

}

private extension SettingsViewController
{
    func update()
    {
        if let team = DatabaseManager.shared.activeTeam()
        {
            self.accountNameLabel.text = team.name
            self.accountEmailLabel.text = team.account.appleID
            self.accountTypeLabel.text = team.type.localizedDescription
            
            self.activeTeam = team
        }
        else
        {
            self.activeTeam = nil
        }
        
        self.backgroundRefreshSwitch.isOn = UserDefaults.standard.isBackgroundRefreshEnabled
        self.noIdleTimeoutSwitch.isOn = UserDefaults.standard.isIdleTimeoutDisableEnabled
        
        if self.isViewLoaded
        {
            self.tableView.reloadData()
        }
    }
    
    func prepare(_ settingsHeaderFooterView: SettingsHeaderFooterView, for section: Section, isHeader: Bool)
    {
        settingsHeaderFooterView.primaryLabel.isHidden = !isHeader
        settingsHeaderFooterView.secondaryLabel.isHidden = isHeader
        settingsHeaderFooterView.button.isHidden = true
        
        settingsHeaderFooterView.layoutMargins.bottom = isHeader ? 0 : 8
        
        switch section
        {
        case .signIn:
            if isHeader
            {
                settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("ACCOUNT", comment: "")
            }
            else
            {
                settingsHeaderFooterView.secondaryLabel.text = NSLocalizedString("Sign in with your Apple ID to download apps from SideStore.", comment: "")
            }
            
        case .patreon:
            if isHeader
            {
                settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("SUPPORT US", comment: "")
            }
            else
            {
                settingsHeaderFooterView.secondaryLabel.text = NSLocalizedString("Support the SideStore Team by following our socials or becoming a patron!", comment: "")
            }

        case .account:
            settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("ACCOUNT", comment: "")
            
            settingsHeaderFooterView.button.setTitle(NSLocalizedString("SIGN OUT", comment: ""), for: .normal)
            settingsHeaderFooterView.button.addTarget(self, action: #selector(SettingsViewController.signOut(_:)), for: .primaryActionTriggered)
            settingsHeaderFooterView.button.isHidden = false
            
        case .appRefresh:
            if isHeader
            {
                settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("REFRESHING APPS", comment: "")
            }
            else
            {
                settingsHeaderFooterView.secondaryLabel.text = NSLocalizedString("Enable Background Refresh to automatically refresh apps in the background when connected to Wi-Fi. \n\nDisable the Idle Timeout toggle to allow SideStore to not let your device go to sleep during a refresh or install of any apps.", comment: "")
            }
            
        case .instructions:
            break
            
        case .credits:
            settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("CREDITS", comment: "")
            
        case .debug:
            settingsHeaderFooterView.primaryLabel.text = NSLocalizedString("DEBUG", comment: "")
        }
    }
    
    func preferredHeight(for settingsHeaderFooterView: SettingsHeaderFooterView, in section: Section, isHeader: Bool) -> CGFloat
    {
        let widthConstraint = settingsHeaderFooterView.contentView.widthAnchor.constraint(equalToConstant: tableView.bounds.width)
        NSLayoutConstraint.activate([widthConstraint])
        defer { NSLayoutConstraint.deactivate([widthConstraint]) }
        
        self.prepare(settingsHeaderFooterView, for: section, isHeader: isHeader)
        
        let size = settingsHeaderFooterView.contentView.systemLayoutSizeFitting(UIView.layoutFittingCompressedSize)
        return size.height
    }
}

private extension SettingsViewController
{
    func signIn()
    {
        AppManager.shared.authenticate(presentingViewController: self) { (result) in
            DispatchQueue.main.async {
                switch result
                {
                case .failure(OperationError.cancelled):
                    // Ignore
                    break
                    
                case .failure(let error):
                    let toastView = ToastView(error: error)
                    toastView.show(in: self)
                    
                case .success: break
                }
                
                self.update()
            }
        }
    }
    
    @objc func signOut(_ sender: UIBarButtonItem)
    {
        func signOut()
        {
            DatabaseManager.shared.signOut { (error) in
                DispatchQueue.main.async {
                    if let error = error
                    {
                        let toastView = ToastView(error: error)
                        toastView.show(in: self)
                    }
                    
                    self.update()
                }
            }
        }
        
        let alertController = UIAlertController(title: NSLocalizedString("Are you sure you want to sign out?", comment: ""), message: NSLocalizedString("You will no longer be able to install or refresh apps once you sign out.", comment: ""), preferredStyle: .actionSheet)
        alertController.addAction(UIAlertAction(title: NSLocalizedString("Sign Out", comment: ""), style: .destructive) { _ in signOut() })
        alertController.addAction(.cancel)
        //Fix crash on iPad
        alertController.popoverPresentationController?.barButtonItem = sender
        self.present(alertController, animated: true, completion: nil)
    }
    
    @IBAction func toggleIsBackgroundRefreshEnabled(_ sender: UISwitch)
    {
        UserDefaults.standard.isBackgroundRefreshEnabled = sender.isOn
    }
    
    @IBAction func toggleNoIdleTimeoutEnabled(_ sender: UISwitch)
    {
        UserDefaults.standard.isIdleTimeoutDisableEnabled = sender.isOn
    }
    
    @available(iOS 14, *)
    @IBAction func addRefreshAppsShortcut()
    {
        guard let shortcut = INShortcut(intent: INInteraction.refreshAllApps().intent) else { return }
        
        let viewController = INUIAddVoiceShortcutViewController(shortcut: shortcut)
        viewController.delegate = self
        viewController.modalPresentationStyle = .formSheet
        self.present(viewController, animated: true, completion: nil)
    }
    
    func clearCache()
    {
        let alertController = UIAlertController(title: NSLocalizedString("Are you sure you want to clear SideStore's cache?", comment: ""),
                                                message: NSLocalizedString("This will remove all temporary files as well as backups for uninstalled apps.", comment: ""),
                                                preferredStyle: .actionSheet)
        alertController.addAction(UIAlertAction(title: UIAlertAction.cancel.title, style: UIAlertAction.cancel.style) { [weak self] _ in
            self?.tableView.indexPathForSelectedRow.map { self?.tableView.deselectRow(at: $0, animated: true) }
        })
        alertController.addAction(UIAlertAction(title: NSLocalizedString("Clear Cache", comment: ""), style: .destructive) { [weak self] _ in
            AppManager.shared.clearAppCache { result in
                DispatchQueue.main.async {
                    self?.tableView.indexPathForSelectedRow.map { self?.tableView.deselectRow(at: $0, animated: true) }
                    
                    switch result
                    {
                    case .success: break
                    case .failure(let error):
                        let alertController = UIAlertController(title: NSLocalizedString("Unable to Clear Cache", comment: ""), message: error.localizedDescription, preferredStyle: .alert)
                        alertController.addAction(.ok)
                        self?.present(alertController, animated: true)
                    }
                }
            }
        })
        
        if let popoverController = alertController.popoverPresentationController {
            popoverController.sourceView = self.view
            popoverController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)
        }
        
        self.present(alertController, animated: true)
    }
    
    @IBAction func handleDebugModeGesture(_ gestureRecognizer: UISwipeGestureRecognizer)
    {
        self.debugGestureCounter += 1
        self.debugGestureTimer?.invalidate()
        
        if self.debugGestureCounter >= 3
        {
            self.debugGestureCounter = 0
            
            UserDefaults.standard.isDebugModeEnabled.toggle()
            self.tableView.reloadData()
        }
        else
        {
            self.debugGestureTimer = Timer.scheduledTimer(withTimeInterval: 0.4, repeats: false) { [weak self] (timer) in
                self?.debugGestureCounter = 0
            }
        }
    }
    
    func openTwitter(username: String)
    {
        let twitterAppURL = URL(string: "twitter://user?screen_name=" + username)!
        UIApplication.shared.open(twitterAppURL, options: [:]) { (success) in
            if success
            {
                if let selectedIndexPath = self.tableView.indexPathForSelectedRow
                {
                    self.tableView.deselectRow(at: selectedIndexPath, animated: true)
                }
            }
            else
            {
                let safariURL = URL(string: "https://twitter.com/" + username)!
                
                let safariViewController = SFSafariViewController(url: safariURL)
                safariViewController.preferredControlTintColor = .altPrimary
                self.present(safariViewController, animated: true, completion: nil)
            }
        }
    }
}

private extension SettingsViewController
{
    @objc func openPatreonSettings(_ notification: Notification)
    {
        guard self.presentedViewController == nil else { return }
                
        UIView.performWithoutAnimation {
            self.navigationController?.popViewController(animated: false)
            self.performSegue(withIdentifier: "showPatreon", sender: nil)
        }
    }

    @objc func openErrorLog(_: Notification) {
        guard self.presentedViewController == nil else { return }

        self.navigationController?.popViewController(animated: false)
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.1) {
            self.performSegue(withIdentifier: "showErrorLog", sender: nil)
        }
    }
}

extension SettingsViewController
{
    override func numberOfSections(in tableView: UITableView) -> Int
    {
        var numberOfSections = super.numberOfSections(in: tableView)
        
        if !UserDefaults.standard.isDebugModeEnabled
        {
            numberOfSections -= 1
        }
        
        return numberOfSections
    }
    
    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
    {
        let section = Section.allCases[section]
        switch section
        {
        case .signIn: return (self.activeTeam == nil) ? 1 : 0
        case .account: return (self.activeTeam == nil) ? 0 : 3
        case .appRefresh: return AppRefreshRow.allCases.count
        default: return super.tableView(tableView, numberOfRowsInSection: section.rawValue)
        }
    }
    
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
    {
        let cell = super.tableView(tableView, cellForRowAt: indexPath)
        
        if #available(iOS 14, *) {}
        else if let cell = cell as? InsetGroupTableViewCell,
                indexPath.section == Section.appRefresh.rawValue,
                indexPath.row == AppRefreshRow.backgroundRefresh.rawValue
        {
            // Only one row is visible pre-iOS 14.
            cell.style = .single
        }
        
        if AppRefreshRow.AllCases().count == 1
        {
            if let cell = cell as? InsetGroupTableViewCell,
               indexPath.section == Section.appRefresh.rawValue,
               indexPath.row == AppRefreshRow.backgroundRefresh.rawValue
            {
                cell.style = .single
            }
        }
        
        
        return cell
    }
    
    override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView?
    {
        let section = Section.allCases[section]
        switch section
        {
        case .signIn where self.activeTeam != nil: return nil
        case .account where self.activeTeam == nil: return nil
        case .signIn, .account, .patreon, .appRefresh, .credits, .debug:
            let headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: "HeaderFooterView") as! SettingsHeaderFooterView
            self.prepare(headerView, for: section, isHeader: true)
            return headerView
            
        case .instructions: return nil
        }
    }
    
    override func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView?
    {
        let section = Section.allCases[section]
        switch section
        {
        case .signIn where self.activeTeam != nil: return nil
        case .signIn, .patreon, .appRefresh:
            let footerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: "HeaderFooterView") as! SettingsHeaderFooterView
            self.prepare(footerView, for: section, isHeader: false)
            return footerView
            
        case .account, .credits, .debug, .instructions: return nil
        }
    }

    override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat
    {
        let section = Section.allCases[section]
        switch section
        {
        case .signIn where self.activeTeam != nil: return 1.0
        case .account where self.activeTeam == nil: return 1.0
        case .signIn, .account, .patreon, .appRefresh, .credits, .debug:
            let height = self.preferredHeight(for: self.prototypeHeaderFooterView, in: section, isHeader: true)
            return height
            
        case .instructions: return 0.0
        }
    }
    
    override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat
    {
        let section = Section.allCases[section]
        switch section
        {
        case .signIn where self.activeTeam != nil: return 1.0
        case .account where self.activeTeam == nil: return 1.0            
        case .signIn, .patreon, .appRefresh:
            let height = self.preferredHeight(for: self.prototypeHeaderFooterView, in: section, isHeader: false)
            return height
            
        case .account, .credits, .debug, .instructions: return 0.0
        }
    }
}

extension SettingsViewController
{
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
    {
        let section = Section.allCases[indexPath.section]
        switch section
        {
        case .signIn: self.signIn()
        case .instructions: break
        case .appRefresh:
            let row = AppRefreshRow.allCases[indexPath.row]
            switch row
            {
            case .backgroundRefresh: break
            case .noIdleTimeout: break
            case .addToSiri:
                guard #available(iOS 14, *) else { return }
                self.addRefreshAppsShortcut()
            }
            
            
        case .credits:
            let row = CreditsRow.allCases[indexPath.row]
            switch row
            {
            case .developer: self.openTwitter(username: "sidestore_io")
            case .operations: self.openTwitter(username: "sidestore_io")
            case .designer: self.openTwitter(username: "lit_ritt")
            case .softwareLicenses: break
            }
            
        case .debug:
            let row = DebugRow.allCases[indexPath.row]
            switch row
            {
            case .sendFeedback:
                if MFMailComposeViewController.canSendMail()
                {
                    let mailViewController = MFMailComposeViewController()
                    mailViewController.mailComposeDelegate = self
                    mailViewController.setToRecipients(["support@sidestore.io"])
                    
                    if let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
                    {
                        mailViewController.setSubject("SideStore Beta \(version) Feedback")
                    }
                    else
                    {
                        mailViewController.setSubject("SideStore Beta Feedback")
                    }
                    
                    self.present(mailViewController, animated: true, completion: nil)
                }
                else
                {
                    let toastView = ToastView(text: NSLocalizedString("Cannot Send Mail", comment: ""), detailText: nil)
                    toastView.show(in: self)
                }
                
            case .refreshSideJITServer:
                if #available(iOS 17, *) {
                   let alertController = UIAlertController(
                      title: NSLocalizedString("Are you sure to Refresh SideJITServer?", comment: ""),
                      message: NSLocalizedString("if you do not have SideJITServer setup this will do nothing", comment: ""),
                      preferredStyle: UIAlertController.Style.actionSheet)

                   alertController.addAction(UIAlertAction(title: NSLocalizedString("Refresh", comment: ""), style: .destructive){ _ in
                      if UserDefaults.standard.sidejitenable {
                         var SJSURL = ""
                          if (UserDefaults.standard.textInputSideJITServerurl ?? "").isEmpty {
                            SJSURL = "http://sidejitserver._http._tcp.local:8080"
                         } else {
                            SJSURL = UserDefaults.standard.textInputSideJITServerurl ?? ""
                         }  // replace with your URL
                        
                          
                         let url = URL(string: SJSURL + "/re/")!

                         let task = URLSession.shared.dataTask(with: url) { (data, response, error) in
                            if let error = error {
                               print("Error: \(error)")
                            } else {
                               // Do nothing with data or response
                            }
                         }

                         task.resume()
                      }
                   })

                   alertController.addAction(.cancel)
                   //Fix crash on iPad
                   alertController.popoverPresentationController?.sourceView = self.tableView
                   alertController.popoverPresentationController?.sourceRect = self.tableView.rectForRow(at: indexPath)
                   self.present(alertController, animated: true)
                   self.tableView.deselectRow(at: indexPath, animated: true)
                } else {
                   let alertController = UIAlertController(
                      title: NSLocalizedString("You are not on iOS 17+ This will not work", comment: ""),
                      message: NSLocalizedString("This is meant for 'SideJITServer' and it only works on iOS 17+ ", comment: ""),
                      preferredStyle: UIAlertController.Style.actionSheet)

                   alertController.addAction(UIAlertAction(title: NSLocalizedString("OK", comment: ""), style: .destructive){ _ in
                      print("Not on iOS 17")
                   })

                   alertController.addAction(.cancel)
                   //Fix crash on iPad
                   alertController.popoverPresentationController?.sourceView = self.tableView
                   alertController.popoverPresentationController?.sourceRect = self.tableView.rectForRow(at: indexPath)
                   self.present(alertController, animated: true)
                   self.tableView.deselectRow(at: indexPath, animated: true)
                }

                
            case .clearCache: self.clearCache()
                
            case .resetPairingFile:
                let filename = "ALTPairingFile.mobiledevicepairing"
                let fm = FileManager.default
                let documentsPath = fm.documentsDirectory.appendingPathComponent("/\(filename)")
                let alertController = UIAlertController(
                    title: NSLocalizedString("Are you sure to reset the pairing file?", comment: ""),
                    message: NSLocalizedString("You can reset the pairing file when you cannot sideload apps or enable JIT. You need to restart SideStore.", comment: ""),
                    preferredStyle: UIAlertController.Style.actionSheet)
                
                alertController.addAction(UIAlertAction(title: NSLocalizedString("Delete and Reset", comment: ""), style: .destructive){ _ in
                    if fm.fileExists(atPath: documentsPath.path), let contents = try? String(contentsOf: documentsPath), !contents.isEmpty {
                        UserDefaults.standard.isPairingReset = true
                        try? fm.removeItem(atPath: documentsPath.path)
                        NSLog("Pairing File Reseted")
                    }
                    self.tableView.deselectRow(at: indexPath, animated: true)
                    let dialogMessage = UIAlertController(title: NSLocalizedString("Pairing File Reset", comment: ""), message: NSLocalizedString("Please restart SideStore", comment: ""), preferredStyle: .alert)
                    self.present(dialogMessage, animated: true, completion: nil)
                })
                alertController.addAction(.cancel)
                //Fix crash on iPad
                alertController.popoverPresentationController?.sourceView = self.tableView
                alertController.popoverPresentationController?.sourceRect = self.tableView.rectForRow(at: indexPath)
                self.present(alertController, animated: true)
                self.tableView.deselectRow(at: indexPath, animated: true)
            case .anisetteServers:
                self.prepare(for: UIStoryboardSegue(identifier: "anisetteServers", source: self, destination: UIHostingController(rootView: AnisetteServers(selected: "", errorCallback: {
                    ToastView(text: "Reset adi.pb", detailText: "Buh").show(in: self)
                }))), sender: nil)
//                self.performSegue(withIdentifier: "anisetteServers", sender: nil)
            case .advancedSettings:
                // Create the URL that deep links to your app's custom settings.
                if let url = URL(string: UIApplication.openSettingsURLString) {
                    // Ask the system to open that URL.
                    UIApplication.shared.open(url)
                } else {
                    ELOG("UIApplication.openSettingsURLString invalid")
                }
            case .refreshAttempts, .errorLog: break

            }
            
        default: break
        }
    }
}

extension SettingsViewController: MFMailComposeViewControllerDelegate
{
    func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?)
    {
        if let error = error
        {
            let toastView = ToastView(error: error)
            toastView.show(in: self)
        }
        
        controller.dismiss(animated: true, completion: nil)
    }
}

extension SettingsViewController: UIGestureRecognizerDelegate
{
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool
    {
        return true
    }
}

extension SettingsViewController: INUIAddVoiceShortcutViewControllerDelegate
{
    func addVoiceShortcutViewController(_ controller: INUIAddVoiceShortcutViewController, didFinishWith voiceShortcut: INVoiceShortcut?, error: Error?)
    {
        if let indexPath = self.tableView.indexPathForSelectedRow
        {
            self.tableView.deselectRow(at: indexPath, animated: true)
        }
        
        controller.dismiss(animated: true, completion: nil)
        
        guard let error = error else { return }
        
        let toastView = ToastView(error: error)
        toastView.show(in: self)
    }
    
    func addVoiceShortcutViewControllerDidCancel(_ controller: INUIAddVoiceShortcutViewController)
    {
        if let indexPath = self.tableView.indexPathForSelectedRow
        {
            self.tableView.deselectRow(at: indexPath, animated: true)
        }
        
        controller.dismiss(animated: true, completion: nil)
    }
}