NexilisLibraryiOS/AppBuilder/AppBuilder/ThirdTabViewController.swift

//
//  ThirdTabViewController.swift
//  AppBuilder
//
//  Created by Kevin Maulana on 30/03/22.
//

import UIKit
import WebKit
import NexilisLite
import Speech
import CommonCrypto

class ThirdTabViewController: UIViewController, UIScrollViewDelegate, UIGestureRecognizerDelegate, WKScriptMessageHandler, ImageVideoPickerDelegate  {

    var webView: WKWebView!
    var address = ""
    private var lastContentOffset: CGFloat = 0
    
    var isAllowSpeech = false
    
    var speechRecognizer = SFSpeechRecognizer(locale: Locale(identifier: "en"))

    var recognitionRequest : SFSpeechAudioBufferRecognitionRequest?
    var recognitionTask : SFSpeechRecognitionTask?
    let audioEngine = AVAudioEngine()
    var alertController = LibAlertController()
    
    public static var forceRefresh = true
    public static var canLoadURL = false
    public static var showModal = false
    
    var indexImageVideoWv = 0
    var imageVideoPicker: ImageVideoPicker!
    var blockedCertificate = ""
    var allowedURLs = Set<String>()
    var loadingURL = false
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.view.backgroundColor = self.traitCollection.userInterfaceStyle == .dark ? .black : .white

        let configuration = WKWebViewConfiguration()
        configuration.allowsInlineMediaPlayback = true
        loadContentBlocker(into: configuration) { [self] in
            DispatchQueue.main.async {
                self.initializeWebView(with: configuration)
            }
        }
    }
    
    func initializeWebView(with configuration: WKWebViewConfiguration) {
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(collapseDocked))
        tapGesture.cancelsTouchesInView = false
        tapGesture.delegate = self
        let customUserAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Mobile/15E148 Safari/604.1 \(Utils.getUserAgent())"
        let finalUserAgent = "\(customUserAgent)"
        configuration.applicationNameForUserAgent = finalUserAgent
        webView = WKWebView(frame: .zero, configuration: configuration)
        view.addSubview(webView)
        webView.translatesAutoresizingMaskIntoConstraints = false
        NSLayoutConstraint.activate([
            webView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
            webView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            webView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            webView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        webView.scrollView.addGestureRecognizer(tapGesture)
        let refreshControl = UIRefreshControl()
        refreshControl.addTarget(self, action: #selector(reloadWebView(_:)), for: .valueChanged)
        webView.scrollView.addSubview(refreshControl)
        webView.scrollView.delegate = self
        webView.navigationDelegate = self
        webView.allowsBackForwardNavigationGestures = true
        
        let contentController = self.webView.configuration.userContentController
        contentController.add(self, name: "checkProfile")
        contentController.add(self, name: "setIsProductModalOpen")
        contentController.add(self, name: "toggleVoiceSearch")
        contentController.add(self, name: "blockUser")
        contentController.add(self, name: "showAlert")
        contentController.add(self, name: "closeProfile")
        contentController.add(self, name: "tabShowHide")
        contentController.add(self, name: "shareText")
        contentController.add(self, name: "openGalleryiOS")
        
        let source: String = "var meta = document.createElement('meta');" +
            "meta.name = 'viewport';" +
            "meta.content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no';" +
            "var head = document.getElementsByTagName('head')[0];" +
            "head.appendChild(meta);" +
        "$('#header-layout').find('.col-8').removeClass('col-8').addClass('col');" +
        "$('#header-layout').find('.col-4').removeClass('col-4').addClass('col');"
        let script: WKUserScript = WKUserScript(source: source, injectionTime: .atDocumentEnd, forMainFrameOnly: false)
        contentController.addUserScript(script)
        
        let cookieScript1 = "document.cookie = '\(Utils.getCookiesMobile().components(separatedBy: ";")[0])';"
        let cookieScriptInjection1 = WKUserScript(source: cookieScript1, injectionTime: .atDocumentStart, forMainFrameOnly: false)
        configuration.userContentController.addUserScript(cookieScriptInjection1)
        
        let cookieScript2 = "document.cookie = '\(Utils.getCookiesMobile().components(separatedBy: ";")[1])';"
        let cookieScriptInjection2 = WKUserScript(source: cookieScript2, injectionTime: .atDocumentStart, forMainFrameOnly: false)
        configuration.userContentController.addUserScript(cookieScriptInjection2)
        
        NotificationCenter.default.addObserver(self, selector: #selector(onShowAC(notification:)), name: NSNotification.Name(rawValue: "onShowAC"), object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(onRefreshWebView(notification:)), name: NSNotification.Name(rawValue: "onRefreshWebView"), object: nil)
        
        imageVideoPicker = ImageVideoPicker(presentationController: self, delegate: self)
        ThirdTabViewController.canLoadURL = true
        processURL()
    }
    
    func loadContentBlocker(into config: WKWebViewConfiguration, completion: @escaping () -> Void) {
        // Define ad-blocking rules directly in Swift as a string
        let contentRules = PrefsUtil.contentRulesAds

        WKContentRuleListStore.default().compileContentRuleList(forIdentifier: "AdBlocker", encodedContentRuleList: contentRules) { ruleList, error in
            if let ruleList = ruleList {
                config.userContentController.add(ruleList)
            } else {
                print("Failed to compile content rule list: \(error?.localizedDescription ?? "Unknown error")")
            }
            completion()
        }
    }
    
    func loadURLWithCookie(url: URL) {
        var urlRequest = URLRequest(url: url)
        let customUserAgent = "Mozilla/5.0 (iPhone; CPU iPhone OS 16_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5 Mobile/15E148 Safari/604.1 \(Utils.getUserAgent())"
        urlRequest.setValue(customUserAgent, forHTTPHeaderField: "User-Agent")
        if let cookies = HTTPCookieStorage.shared.cookies(for: url) {
            for cookie in cookies {
                webView.configuration.websiteDataStore.httpCookieStore.setCookie(cookie)
            }
            webView.load(urlRequest)
        }
    }
    
    func processURL() {
        let me = User.getMyPin()
        
        var myURL : URL?
        let lang: String = SecureUserDefaults.shared.value(forKey: "i18n_language") ?? "en"
        var intLang = 0
        if lang == "id" {
            speechRecognizer = SFSpeechRecognizer(locale: Locale(identifier: "id"))
            intLang = 1
        }
        if PrefsUtil.getURLThirdTab() != nil {
            ViewController.tab3 = PrefsUtil.getURLThirdTab()!
        }
        switch(ViewController.tab3){
        case "0":
            address = "\(PrefsUtil.getURLBase())nexilis/pages/tab1-main-only?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
            myURL = URL(string: address)
        case "1":
            address = "\(PrefsUtil.getURLBase())nexilis/pages/tab3-main-only?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
            myURL = URL(string: address)
        case "2":
            address = "\(PrefsUtil.getURLBase())nexilis/pages/tab1-main?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
            myURL = URL(string: address)
        case "3":
            address = "\(PrefsUtil.getURLBase())nexilis/pages/tab3-commerce?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
            myURL = URL(string: address)
        case "4":
            address = "\(PrefsUtil.getURLBase())nexilis/pages/tab1-video?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
            myURL = URL(string: address)
        default:
            if(!ViewController.tab3.isEmpty){
                if(ViewController.tab3.lowercased().contains("https://") || ViewController.sURL.lowercased().contains("http://")){
                    address = ViewController.tab3
                    myURL = URL(string: address)
                }
                else {
                    if ViewController.tab3.contains("nexilis/pages"){
                        address = "\(PrefsUtil.getURLBase())\(ViewController.tab3)?f_pin=\(me ?? "")&lang=\(intLang)&theme=\(self.traitCollection.userInterfaceStyle == .dark ? "0" : "1")"
                    } else {
                        address = "https://\(ViewController.tab3)"
                    }
                    myURL = URL(string: address)
                }
            }
        }
        if let u = myURL{
            self.webView.evaluateJavaScript("{window.localStorage.setItem('currentTab','\(ViewController.tab3)')}")
            if ThirdTabViewController.forceRefresh {
                loadURLWithCookie(url: u)
            } else {
                self.webView.evaluateJavaScript("if(resumeAll){resumeAll();}")
            }
            ThirdTabViewController.forceRefresh = false
        }
    }
    
    override func viewWillAppear(_ animated: Bool) {
        if ThirdTabViewController.canLoadURL {
            processURL()
        }
        navigationController?.setNavigationBarHidden(true, animated: false)
    }
    
    func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
        if Utils.getIsLoadThemeFromOther() {
            self.webView.evaluateJavaScript("{window.localStorage.setItem('mobileConfiguration','"+Utils.getMyTheme()+"')}")
        }
    }
    
    override func viewDidAppear(_ animated: Bool) {
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.2, execute: {
                var viewController = UIApplication.shared.windows.first!.rootViewController
                if !(viewController is ViewController) {
                    viewController = self.parent
                }
                if ViewController.middleButton.isHidden {
                    ViewController.isExpandButton = false
                    if let viewController = viewController as? ViewController {
                        if viewController.tabBar.isHidden {
                            viewController.tabBar.isHidden = false
                            ViewController.middleButton.isHidden = false
                            ViewController.alwaysHideButton = false
                        }
                    }
                } else if PrefsUtil.getCpaasMode() != PrefsUtil.CPAAS_MODE_DOCKED {
                    DispatchQueue.main.async {
                        if let viewController = viewController as? ViewController {
                            if viewController.tabBar.isHidden {
                                viewController.tabBar.isHidden = false
                                ViewController.alwaysHideButton = false
                            }
                        }
                    }
                }
//            }
        })
    }
    
    @objc func onShowAC(notification: NSNotification) {
        self.webView.evaluateJavaScript("{if(pauseAll){pauseAll();}}")
        view.endEditing(true)
        resignFirstResponder()
    }
    
    @objc func onRefreshWebView(notification: NSNotification) {
        ThirdTabViewController.forceRefresh = true
    }
    
    override func viewWillDisappear(_ animated: Bool) {
        if self.webView != nil {
            if self.webView.scrollView.contentOffset.y < 0 { // Move tableView to top
                self.webView.scrollView.setContentOffset(CGPoint.zero, animated: true)
            }
            self.webView.evaluateJavaScript("{if(pauseAll){pauseAll();}}")
            view.endEditing(true)
            resignFirstResponder()
            self.webView.evaluateJavaScript("hideAddToCart();")
        }
    }
    
    func scrollViewDidScroll(_ scrollView: UIScrollView) {
        if (self.lastContentOffset > scrollView.contentOffset.y && scrollView.contentOffset.y < (scrollView.contentSize.height - scrollView.frame.size.height)) {
            showTabBar();
        }
        else if (self.lastContentOffset != 0 && self.lastContentOffset < scrollView.contentOffset.y && self.lastContentOffset >= 0) {
            hideTabBar();
        }
        self.lastContentOffset = scrollView.contentOffset.y
        self.collapseDocked()
    }

    
    @objc func collapseDocked() {
        if ViewController.isExpandButton {
            ViewController.expandButton()
        }
    }
    
    @objc func reloadWebView(_ sender: UIRefreshControl) {
        ThirdTabViewController.forceRefresh = true
        viewWillAppear(false)
        ViewController.alwaysHideButton = false
        showTabBar()
        sender.endRefreshing()
    }

    func hideTabBar() {
        var viewController = UIApplication.shared.windows.first!.rootViewController
        if !(viewController is ViewController) {
            viewController = self.parent
        }
        if ViewController.middleButton.isDescendant(of: viewController!.view) {
            DispatchQueue.main.async {
                if ViewController.isExpandButton {
                    ViewController.expandButton()
                }
                ViewController.hideDockedButton()
                if let viewController = viewController as? ViewController {
                    viewController.tabBar.isHidden = true
                }
                ViewController.removeMiddleButton()
            }
        } else if PrefsUtil.getCpaasMode() != PrefsUtil.CPAAS_MODE_DOCKED {
            DispatchQueue.main.async {
                if let viewController = viewController as? ViewController {
                    if !viewController.tabBar.isHidden {
                        viewController.tabBar.isHidden = true
                    }
                }
            }
        }
    }

    func showTabBar() {
        if(ViewController.alwaysHideButton){
            return
        }
        var viewController = UIApplication.shared.windows.first!.rootViewController
        if !(viewController is ViewController) {
            viewController = self.parent
        }
        if ViewController.middleButton.isHidden {
            if let viewController = viewController as? ViewController {
                viewController.tabBar.isHidden = false
                ViewController.middleButton.isHidden = false
            }
        } else if PrefsUtil.getCpaasMode() != PrefsUtil.CPAAS_MODE_DOCKED {
            DispatchQueue.main.async {
                if let viewController = viewController as? ViewController {
                    if viewController.tabBar.isHidden {
                        viewController.tabBar.isHidden = false
                    }
                }
            }
        }
    }

    func scrollViewWillBeginZooming(_ scrollView: UIScrollView, with view: UIView?) {
        scrollView.pinchGestureRecognizer?.isEnabled = false
    }


    func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        if message.name == "checkProfile" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? String,
                  let param2 = dict["param2"] as? String else {
                return
            }
            if ViewController.checkIsChangePerson() {
                if param2 == "like" {
                    self.webView.evaluateJavaScript("likeProduct('\(param1)',1,true);")
                } else if param2 == "comment" {
                    self.webView.evaluateJavaScript("openComment('\(param1.split(separator: "|")[0])',\(param1.split(separator: "|")[1]),true);")
                } else if param2 == "report_user" {
                    self.webView.evaluateJavaScript("reportUser('\(param1)',true);")
                } else if param2 == "report_content" {
                    self.webView.evaluateJavaScript("reportContent('\(param1.split(separator: "|")[0])','\(param1.split(separator: "|")[1])',true);")
                } else if param2 == "block_user" {
                    self.webView.evaluateJavaScript("blockUser('\(param1)',true);")
                } else if param2 == "follow_user" {
                    self.webView.evaluateJavaScript("followUser('\(param1.split(separator: "|")[0])',\(param1.split(separator: "|")[1]),true);")
                } else if param2 == "homepage" || param2 == "gif" {
                    self.webView.evaluateJavaScript("window.location.href = '\(param1)';")
                } else if param2 == "block_content" {
                    self.webView.evaluateJavaScript("blockContent('\(param1)',true);")
                } else {
                    self.webView.evaluateJavaScript("openNewPost(true);")
                }
            } else {
                self.webView.evaluateJavaScript("{if(pauseAll){pauseAll();}}")
            }
        } else if message.name == "setIsProductModalOpen" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? Bool else {
                return
            }
            if param1 {
                if self.webView.scrollView.contentOffset.y < 0 { // Move tableView to top
                    self.webView.scrollView.setContentOffset(CGPoint.zero, animated: true)
                }
            }
            ThirdTabViewController.showModal = param1
        } else if message.name == "toggleVoiceSearch" {
            if !isAllowSpeech {
                setupSpeech()
            } else {
                runVoice()
            }
        } else if message.name == "blockUser" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? String,
                  let param2 = dict["param2"] as? Bool else {
                return
            }
            if param2 {
                DispatchQueue.global().async {
                    if let response = Nexilis.writeAndWait(message: CoreMessage_TMessageBank.getBlock(l_pin: param1)) {
                        if response.isOk() {
                            DispatchQueue.main.async {
                                Database.shared.database?.inTransaction({ (fmdb, rollback) in
                                    _ = Database.shared.updateRecord(fmdb: fmdb, table: "BUDDY", cvalues: [
                                        "ex_block" : "1"
                                    ], _where: "f_pin = '\(param1)'")
                                })
                            }
                        }
                    }
                }
            } else {
                DispatchQueue.global().async {
                    if let response = Nexilis.writeAndWait(message: CoreMessage_TMessageBank.getUnBlock(l_pin: param1)) {
                        if response.isOk() {
                            DispatchQueue.main.async {
                                Database.shared.database?.inTransaction({ (fmdb, rollback) in
                                    _ = Database.shared.updateRecord(fmdb: fmdb, table: "BUDDY", cvalues: [
                                        "ex_block" : "0"
                                    ], _where: "f_pin = '\(param1)'")
                                })
                            }
                        }
                    }
                }
            }
        } else if message.name == "showAlert" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? String else {
                return
            }
            self.view.makeToast(param1, duration: 3)
        } else if message.name == "blockUser" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? String,
                  let param2 = dict["param2"] as? Bool else {
                return
            }
            if param2 {
                DispatchQueue.global().async {
                    if let response = Nexilis.writeAndWait(message: CoreMessage_TMessageBank.getBlock(l_pin: param1)) {
                        if response.isOk() {
                            DispatchQueue.main.async {
                                Database.shared.database?.inTransaction({ (fmdb, rollback) in
                                    _ = Database.shared.updateRecord(fmdb: fmdb, table: "BUDDY", cvalues: [
                                        "ex_block" : "1"
                                    ], _where: "f_pin = '\(param1)'")
                                })
                            }
                        }
                    }
                }
            } else {
                DispatchQueue.global().async {
                    if let response = Nexilis.writeAndWait(message: CoreMessage_TMessageBank.getUnBlock(l_pin: param1)) {
                        if response.isOk() {
                            DispatchQueue.main.async {
                                Database.shared.database?.inTransaction({ (fmdb, rollback) in
                                    _ = Database.shared.updateRecord(fmdb: fmdb, table: "BUDDY", cvalues: [
                                        "ex_block" : "0"
                                    ], _where: "f_pin = '\(param1)'")
                                })
                            }
                        }
                    }
                }
            }
        } else if message.name == "tabShowHide" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? Bool else {
                return
            }
            if param1 {
                ViewController.alwaysHideButton = false
                showTabBar()
            } else {
                if self.viewIfLoaded?.window != nil {
                    ViewController.alwaysHideButton = true
                    hideTabBar()
                }
            }
        } else if message.name == "shareText" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? String else {
                return
            }
            if loadingURL {
                return
            }
            let activityViewController = UIActivityViewController(activityItems: [param1], applicationActivities: nil)
            self.present(activityViewController, animated: true, completion: nil)
        } else if message.name == "openGalleryiOS" {
            guard let dict = message.body as? [String: AnyObject],
                  let param1 = dict["param1"] as? Int else {
                return
            }
            indexImageVideoWv = param1
            let alertController = LibAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
            
            if let action = self.actionImageVideo(for: "image", title: "Choose Photo".localized()) {
                alertController.addAction(action)
            }
            if let action = self.actionImageVideo(for: "video", title: "Choose Video".localized()) {
                alertController.addAction(action)
            }
            alertController.addAction(UIAlertAction(title: "Cancel".localized(), style: .cancel, handler: nil))
            self.present(alertController, animated: true)
        }
    }
    
    private func actionImageVideo(for type: String, title: String) -> UIAlertAction? {
        return UIAlertAction(title: title, style: .default) { [unowned self] _ in
            switch type {
            case "image":
                imageVideoPicker.present(source: .imageAlbum)
            case "video":
                imageVideoPicker.present(source: .videoAlbum)
            default:
                imageVideoPicker.present(source: .imageAlbum)
            }
        }
    }
    
    func didSelect(imagevideo: Any?) {
        if imagevideo != nil {
            let imageData = imagevideo! as! [UIImagePickerController.InfoKey : Any]
            if (imageData[.mediaType] as! String == "public.image") {
                let compressedImage = (imageData[.originalImage] as! UIImage).pngData()!
                let base64String = compressedImage.base64EncodedString()
                let base64ToWeb = "data:image/jpeg;base64,\(base64String)"
                webView.evaluateJavaScript("loadFromMobile('\(base64ToWeb)',\(indexImageVideoWv))") { (result, error) in
                    if let error = error {
                        print("Error executing JavaScript: \(error)")
                    }
                }
            } else {
                guard var dataVideo = try? Data(contentsOf: imageData[.mediaURL] as! URL) else {
                    return
                }
                let sizeOfVideo = Double(dataVideo.count / 1048576)
                if (sizeOfVideo > 10.0) {
                    let compressedURL = NSURL.fileURL(withPath: NSTemporaryDirectory() + UUID().uuidString + ".mp4")
                    compressVideo(inputURL: imageData[.mediaURL] as! URL,
                                  outputURL: compressedURL) { exportSession in
                        guard let session = exportSession else {
                            return
                        }
                        
                        switch session.status {
                        case .unknown:
                            break
                        case .waiting:
                            break
                        case .exporting:
                            break
                        case .completed:
                            guard let compressedData = try? Data(contentsOf: compressedURL) else {
                                return
                            }
                            dataVideo = compressedData
                        case .failed:
                            break
                        case .cancelled:
                            break
                        @unknown default:
                            break
                        }
                    }
                }
                let base64String = dataVideo.base64EncodedString()
                let base64ToWeb = "data:video/mp4;base64,\(base64String)"
                webView.evaluateJavaScript("loadFromMobile('\(base64ToWeb)',\(indexImageVideoWv))") { (result, error) in
                    if let error = error {
                        print("Error executing JavaScript: \(error)")
                    }
                }
            }
        }
    }
    
    func compressVideo(inputURL: URL,
                       outputURL: URL,
                       handler:@escaping (_ exportSession: AVAssetExportSession?) -> Void) {
        let urlAsset = AVURLAsset(url: inputURL, options: nil)
        guard let exportSession = AVAssetExportSession(asset: urlAsset,
                                                       presetName: AVAssetExportPresetMediumQuality) else {
            handler(nil)
            
            return
        }
        
        exportSession.outputURL = outputURL
        exportSession.outputFileType = .mp4
        exportSession.exportAsynchronously {
            handler(exportSession)
        }
    }
    
    func setupSpeech() {

        self.speechRecognizer?.delegate = self

        SFSpeechRecognizer.requestAuthorization { (authStatus) in

            var isButtonEnabled = false

            switch authStatus {
            case .authorized:
                isButtonEnabled = true

            case .denied:
                isButtonEnabled = false
                //print("User denied access to speech recognition")

            case .restricted:
                isButtonEnabled = false
                //print("Speech recognition restricted on this device")

            case .notDetermined:
                isButtonEnabled = false
                //print("Speech recognition not yet authorized")
            @unknown default:
                isButtonEnabled = false
            }

            OperationQueue.main.addOperation() {
                self.isAllowSpeech = isButtonEnabled
                if isButtonEnabled {
                    SecureUserDefaults.shared.set(isButtonEnabled, forKey: "allowSpeech")
                    self.runVoice()
                }
            }
        }
    }
    
    func runVoice() {
        if !audioEngine.isRunning {
            alertController = LibAlertController(title: "Start Recording".localized(), message: "Say something, I'm listening!".localized(), preferredStyle: .alert)
            self.present(alertController, animated: true)
            self.webView.evaluateJavaScript("toggleVoiceButton(true)")
            self.startRecording()
        }
    }
    
    func startRecording() {

        // Clear all previous session data and cancel task
        if recognitionTask != nil {
            recognitionTask?.cancel()
            recognitionTask = nil
        }

        // Create instance of audio session to record voice
        let audioSession = AVAudioSession.sharedInstance()
        do {
            try audioSession.setCategory(AVAudioSession.Category.record, mode: .default, options: [])
            try audioSession.setMode(AVAudioSession.Mode.measurement)
            try audioSession.setActive(true, options: .notifyOthersOnDeactivation)
        } catch {
            //print("audioSession properties weren't set because of an error.")
        }

        self.recognitionRequest = SFSpeechAudioBufferRecognitionRequest()

        let inputNode = audioEngine.inputNode

        guard let recognitionRequest = recognitionRequest else {
            fatalError("Unable to create an SFSpeechAudioBufferRecognitionRequest object")
        }

        recognitionRequest.shouldReportPartialResults = true

        self.recognitionTask = speechRecognizer?.recognitionTask(with: recognitionRequest, resultHandler: { (result, error) in

            var isFinal = false
            var text = ""

            if result != nil {
                text = result?.bestTranscription.formattedString ?? ""
                isFinal = (result?.isFinal)!
                self.alertController.dismiss(animated: true)
                self.audioEngine.stop()
                self.recognitionRequest?.endAudio()
            } else {
                self.alertController.dismiss(animated: true)
            }

            if error != nil || isFinal {
                if error == nil {
                    self.webView.evaluateJavaScript("toggleVoiceButton(false)")
                    self.webView.evaluateJavaScript("submitVoiceSearch('\(text)')")
                } else {
                    self.audioEngine.stop()
                    self.recognitionRequest?.endAudio()
                }
                inputNode.removeTap(onBus: 0)

                self.recognitionRequest = nil
                self.recognitionTask = nil

                self.isAllowSpeech = true
            }
        })

        let recordingFormat = inputNode.outputFormat(forBus: 0)
        inputNode.installTap(onBus: 0, bufferSize: 1024, format: recordingFormat) { (buffer, when) in
            self.recognitionRequest?.append(buffer)
        }

        self.audioEngine.prepare()

        do {
            try self.audioEngine.start()
        } catch {
            //print("audioEngine couldn't start because of an error.")
        }
    }
    
    func isUsingMyWebview() -> Bool{
        return PrefsUtil.getURLThirdTab() == "0" || PrefsUtil.getURLThirdTab() == "1" || PrefsUtil.getURLThirdTab() == "2" || PrefsUtil.getURLThirdTab() == "3" || PrefsUtil.getURLThirdTab() == "4"
    }

}

extension ThirdTabViewController: SFSpeechRecognizerDelegate {

    func speechRecognizer(_ speechRecognizer: SFSpeechRecognizer, availabilityDidChange available: Bool) {
        if available {
            self.isAllowSpeech = true
        } else {
            self.isAllowSpeech = false
        }
    }
}

extension ThirdTabViewController: WKUIDelegate, WKNavigationDelegate {
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping @MainActor (WKNavigationActionPolicy) -> Void) {
        guard let url = navigationAction.request.url else {
            decisionHandler(.cancel)
            return
        }
        if loadingURL {
            decisionHandler(.cancel)
            return
        }
        loadingURL = true
        if allowedURLs.contains(url.absoluteString) {
            if ViewController.alwaysHideButton {
                ViewController.alwaysHideButton = false
                showTabBar()
            }
            loadingURL = false
            decisionHandler(.allow)
            return
        }
        validateSSLCertificate(url: url) { isValid in
            if isValid {
                self.allowedURLs.insert(url.absoluteString)
                self.loadingURL = false
                decisionHandler(.allow)
            } else {
                let host = url.host ?? ""
                DispatchQueue.main.async {
                    var messageText = "You're about to access a website that is not currently trusted by your Nexilis Browser. This website's security certificate is not recognized.\n\nDo you wish to proceed to <<domain>> and trust the website's security certificate?\n\nNote: Adding a website to the trusted list may increase your risk of security vulnerability".localized()
                    messageText = messageText.replacingOccurrences(of: "<<domain>>", with: host)
                    let alert = UIAlertController(title: "Warning Unknown Url!".localized(),
                                                  message: messageText,
                                                  preferredStyle: .alert)

                    let yesAction = UIAlertAction(title: "Yes", style: .default) { _ in
                        let storedCertificate = Utils.getCertificatePinningWebview()
                        if let jsonData = storedCertificate.data(using: .utf8),
                           let certJson = try? JSONSerialization.jsonObject(with: jsonData, options: []) as? [String: String] {
                            var certJson = certJson
                            certJson[host] = self.blockedCertificate
                            if let jsonData = try? JSONSerialization.data(withJSONObject: certJson, options: []),
                               let jsonString = String(data: jsonData, encoding: .utf8) {
                                Utils.setCertificatePinningWebview(value: jsonString)
                            }
                        }
                        self.allowedURLs.insert(url.absoluteString)
                        self.loadingURL = false
                        decisionHandler(.allow)
                    }
                    let noAction = UIAlertAction(title: "No", style: .cancel) { _ in
                        self.loadingURL = false
                        decisionHandler(.cancel)
                    }
                    alert.addAction(yesAction)
                    alert.addAction(noAction)
                    self.present(alert, animated: true, completion: nil)
                }
            }
        }
    }
    
    private func validateSSLCertificate(url: URL, completion: @escaping (Bool) -> Void) {
        let session = URLSession(configuration: .ephemeral, delegate: self, delegateQueue: nil)
        let request = URLRequest(url: url)

        let task = session.dataTask(with: request) { _, response, error in
            if let error = error {
                completion(false)
                return
            }
            completion(true)
        }
        task.resume()
    }
}

extension ThirdTabViewController: URLSessionDelegate {
    func urlSession(_ session: URLSession, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
        guard let serverTrust = challenge.protectionSpace.serverTrust else {
            completionHandler(.cancelAuthenticationChallenge, nil)
            return
        }
        if let publicKeyHash = extractPublicKeyHash(from: serverTrust) {
            let domain = challenge.protectionSpace.host
            let storedCertificate = Utils.getCertificatePinningWebview()
            if let jsonData = storedCertificate.data(using: .utf8),
               let certJson = try? JSONSerialization.jsonObject(with: jsonData, options: []) as? [String: String] {
                if publicKeyHash == certJson[domain] {
                    completionHandler(.useCredential, URLCredential(trust: serverTrust))
                } else {
                    blockedCertificate = publicKeyHash
                    completionHandler(.cancelAuthenticationChallenge, nil)
                }
            }
        } else {
            completionHandler(.cancelAuthenticationChallenge, nil)
        }
    }
    
    func extractPublicKeyHash(from serverTrust: SecTrust) -> String? {
        guard let certificate = SecTrustGetCertificateAtIndex(serverTrust, 0) else { return nil }
        guard let publicKey = SecCertificateCopyKey(certificate) else { return nil }
        
        var error: Unmanaged<CFError>?
        guard let publicKeyData = SecKeyCopyExternalRepresentation(publicKey, &error) as Data? else {
            return nil
        }
        
        // Compute SHA-256 hash
        var hash = [UInt8](repeating: 0, count: Int(CC_SHA256_DIGEST_LENGTH))
        publicKeyData.withUnsafeBytes {
            _ = CC_SHA256($0.baseAddress, CC_LONG(publicKeyData.count), &hash)
        }
        
        let hashData = Data(hash)
        let base64Hash = hashData.base64EncodedString()
        
        return base64Hash
    }
}