CCavenue Payment Gateway with WKWebView - iOS (as UiWebview is deprecated since 2020 by apple) - swift

Question

Post December 2020, apple does not allow UiWebView support. ccavenue, being popular payment gateway in India, still have not updated their sdk from official website.
Here is the the complete code, to be replaced for UiWebView issue.
class CCWebViewController: BaseViewController, WKNavigationDelegate {
var mywebview: WKWebView!
var request: NSMutableURLRequest?
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .white
setupWebView()
notification = NotificationCenter.default.addObserver(forName: .UIApplicationWillEnterForeground, object: nil, queue: .main) {
[unowned self] notification in
self.checkResponseUrl()
}
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
if !isHere {
isHere = true
self.gettingRsaKey(){
(success, object) -> () in
DispatchQueue.main.sync {
if success {
self.encyptCardDetails(data: object as! Data)
}
else{
self.displayAlert(msg: object as! String)
}
}
}
}
}
override func viewDidAppear(_ animated: Bool) {
LoadingOverlay.shared.showOverlay(view: self.view)
}
private func setupWebView(){
//setup webview
let config = WKWebViewConfiguration()
self.mywebview = WKWebView(frame: CGRect.init(x: self.view.bounds.origin.x, y: self.view.bounds.origin.y, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height), configuration: config)
mywebview.navigationDelegate = self
self.view.addSubview(mywebview)
}
private func gettingRsaKey(completion: #escaping (_ success: Bool, _ object: AnyObject?) -> ()){
DispatchQueue.main.async {
self.rsaKeyDataStr = "access_code=\(self.accessCode)&order_id=\(self.orderId)"
let requestData = self.rsaKeyDataStr.data(using: String.Encoding.utf8)
guard let urlFromString = URL(string: self.rsaKeyUrl) else{
return
}
var urlRequest = URLRequest(url: urlFromString)
urlRequest.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
urlRequest.httpMethod = "POST"
urlRequest.httpBody = requestData
let session = URLSession(configuration: URLSessionConfiguration.default)
print("session",session)
session.dataTask(with: urlRequest as URLRequest) {
(data, response, error) -> Void in
if let response = response as? HTTPURLResponse, 200...299 ~= response.statusCode{
guard let responseData = data else{
print("No value for data")
completion(false, "Not proper data for RSA Key" as AnyObject?)
return
}
print("data :: ",responseData)
completion(true, responseData as AnyObject?)
}
else{
completion(false, "Unable to generate RSA Key please check" as AnyObject?) }
}.resume()
}
}
private func encyptCardDetails(data: Data){
guard let rsaKeytemp = String(bytes: data, encoding: String.Encoding.ascii) else{
print("No value for rsaKeyTemp")
return
}
rsaKey = rsaKeytemp
rsaKey = self.rsaKey.trimmingCharacters(in: CharacterSet.newlines)
rsaKey = "-----BEGIN PUBLIC KEY-----\n\(self.rsaKey)\n-----END PUBLIC KEY-----\n"
print("rsaKey :: ",rsaKey)
let myRequestString = "amount=\(amount)&currency=\(currency)"
do{
let encodedData = try RSAUtils.encryptWithRSAPublicKey(str: myRequestString, pubkeyBase64: rsaKey)
var encodedStr = encodedData?.base64EncodedString(options: [])
let validCharSet = CharacterSet(charactersIn: "!*'();:#&=+$,/?%#[]").inverted
encodedStr = encodedStr?.addingPercentEncoding(withAllowedCharacters: validCharSet)
CCWebViewController.statusCode = 0
//Preparing for webview call
if CCWebViewController.statusCode == 0{
CCWebViewController.statusCode = 1
let urlAsString = "https://secure.ccavenue.com/transaction/initTrans"
let encryptedStr = "merchant_id=\(merchantId)&order_id=\(orderId)&redirect_url=\(redirectUrl)&cancel_url=\(cancelUrl)&enc_val=\(encodedStr!)&access_code=\(accessCode)&billing_name=\(billingName)&billing_address=\(billingAddress)&billing_city=\(billingCity)&billing_state=\(billingState)&billing_country=\(billingCountry)&billing_tel=\(billingMobile)&billing_zip=\(pincode)&billing_email=\(billingEmail)&merchant_param1=\(notes)&billing_country=\(billingCountry)&merchant_param2=\(notes)&merchant_param3=\(notes)&merchant_param4=\(notes)&delivery_country=\(billingCountry)&delivery_cust_notes=\(notes)"
let myRequestData = encryptedStr.data(using: String.Encoding.utf8)
request = NSMutableURLRequest(url: URL(string: urlAsString)! as URL, cachePolicy: NSURLRequest.CachePolicy.reloadIgnoringCacheData, timeoutInterval: 30)
request?.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "content-type")
request?.setValue(urlAsString, forHTTPHeaderField: "Referer")
request?.httpMethod = "POST"
request?.httpBody = myRequestData
self.mywebview.load(request! as URLRequest)
}
else{
print("Unable to create requestURL")
displayAlert(msg: "Unable to create requestURL")
}
}
catch let err {
print(err)
}
}
func displayAlert(msg: String){
let alert: UIAlertController = UIAlertController(title: "ERROR", message: msg, preferredStyle: UIAlertControllerStyle.alert)
let okAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.default) {
UIAlertAction in
LoadingOverlay.shared.hideOverlayView()
self.dismiss(animated: true, completion: nil)
}
alert.addAction(okAction)
self.present(alert, animated: true, completion: nil)
}
//MARK: WebviewDelegate Methods
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
self.showToast(type: 0, message: "Error", timeToDisplay: 2)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print(String(describing: webView.url))
LoadingOverlay.shared.hideOverlayView()
webView.evaluateJavaScript("document.documentElement.outerHTML", completionHandler: { result, error in
if let datHtml = result as? String {
print(datHtml)
// parse datHtml here
let string = webView.url!.absoluteString
if(string.contains(self.redirectUrl))
{
print(self.mywebview.isLoading)
let html = datHtml
print("html :: ",html)
var transStatus = "Not Known"
if(html.contains("tracking_id"))
{
if(html.contains("Success"))
{
transStatus = "Transaction Successful"
let controller: CCResultViewController = CCResultViewController()
controller.transStatus = transStatus
controller.isSucceed = true
self.present(controller, animated: true, completion: nil)
}
else if(html.contains("Aborted"))
{
transStatus = "Transaction Cancelled"
let controller: CCResultViewController = CCResultViewController()
controller.transStatus = transStatus
controller.isSucceed = false
self.present(controller, animated: true, completion: nil)
}
else
{
transStatus = "Transaction Failed"
let controller: CCResultViewController = CCResultViewController()
controller.transStatus = transStatus
controller.isSucceed = false
self.present(controller, animated: true, completion: nil)
}
}
else{
print("html does not contain any related data")
self.displayAlert(msg: "html does not contain any related data for this transaction.")
}
}
}
} )
}
}