Aurus Payment on iOS iframe POC: https://docs.aurusinc.com/client_releases/mobilewebkitintegration

AurusViewController.m

//
//  AurusViewController.m
//  AurusPayment
//
//  Created by Gaurav D. Sharma on 06/09/22.
//
// 
// replace <subdomain_provided_by_aurus>,<MerchantIdentifier>,<StoreId>,<TerminalId>,<AlternatePaymentMatrix>,<CorpID> with given credential
// use card details: 4111 1111 1111 1111, any future expire, any security code, any cardholder name 
// debug WKWebKit => Safari -> Develop -> Simulator -> Open page
// docs link: https://docs.aurusinc.com/client_releases/mobilewebkitintegration

#import "AurusViewController.h"
#import <WebKit/WebKit.h>

@interface AurusViewController ()<WKNavigationDelegate,WKScriptMessageHandler> {
  
}

@property (weak) IBOutlet WKWebView *webView;

@end

@implementation AurusViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self.webView.configuration.userContentController addScriptMessageHandler:self name:@"observe"];
  [self.webView.configuration.userContentController addScriptMessageHandler:self name:@"error"];
  
  [self loadData];
}

- (void)loadData{
  NSURLSessionConfiguration *defaultSessionConfiguration = [NSURLSessionConfiguration defaultSessionConfiguration];
  NSURLSession *defaultSession = [NSURLSession sessionWithConfiguration:defaultSessionConfiguration];
  
  // Setup the request with URL
  NSURL *url = [NSURL URLWithString:@"https://<subdomain_provided_by_aurus>.auruspay.com/aurus-adsdk-web-service/auruspay/adsdk/sessionId"];
  NSMutableURLRequest *urlRequest = [NSMutableURLRequest requestWithURL:url];
  
  // Convert POST string parameters to data using UTF8 Encoding
  NSString *MerchantIdentifier = @"<MerchantIdentifier>";
  NSString *StoreId = @"<StoreId>";
  NSString *TerminalId= @"<TerminalId>";
  NSString *AlternatePaymentMatrix = @"<AlternatePaymentMatrix>";
  NSString *CorpID= @"<CorpID>";
  
  NSString *postParams = [NSString stringWithFormat:@"{\"SessionRequest\":{\"MerchantIdentifier\":\"%@\",\"StoreId\":\"%@\",\"TerminalId\":\"%@\",\"ADSDKSpecVer\":\"6.13.8\",\"DomainId\":\"1\",\"TemplateId\":\"1\",\"URLType\":\"1\",\"CardType\":\"\",\"TokenType\":\"102\",\"AlternatePaymentMatrix\":\"%@\",\"CardTypeSupport\":\"\",\"CorpID\":\"%@\",\"LanguageIndicator\":\"00\"}}", MerchantIdentifier, StoreId, TerminalId, AlternatePaymentMatrix, CorpID];
  NSData *postData = [postParams dataUsingEncoding:NSUTF8StringEncoding];
  
  [urlRequest addValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
  [urlRequest addValue:@"application/json" forHTTPHeaderField:@"Accept"];
  
  // Convert POST string parameters to data using UTF8 Encoding
  [urlRequest setHTTPMethod:@"POST"];
  [urlRequest setHTTPBody:postData];
  
  // Create dataTask
  NSURLSessionDataTask *dataTask = [defaultSession dataTaskWithRequest:urlRequest completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
    
    NSDictionary *results = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
    //JSON Parsing....
    NSString *url = results[@"SessionResponse"][@"IFrameUrl"];
    [self loadViewFromURL:url];
  }];
  
  // Fire the request
  [dataTask resume];
}

- (void)loadViewFromURL:(NSString*)url{
  NSURL *nsurl = [NSURL URLWithString:url];
  NSURLRequest *nsrequest = [NSURLRequest requestWithURL:nsurl];
  [self.webView loadRequest:nsrequest];
}

- (void)userContentController:(nonnull WKUserContentController*)userContentController
      didReceiveScriptMessage:(nonnull WKScriptMessage*)message {
  @try {
    NSLog(@"message name:%@", message.name);
    NSDictionary *infoDictionary = (NSDictionary*)message.body;
    NSLog(@"Received Token One_Time_Token: %@",infoDictionary);
    NSString *oneTimeToken = [infoDictionary objectForKey:@"one_time_token"];
    NSLog(@"One_Time_Token:%@",oneTimeToken);
  } @catch (NSException *exception) {
    NSLog(@"NSException %@", exception);
  }
}

- (IBAction)btnTapped:(id)sender {
  NSLog(@"btn tapped");
  NSString *script = @"window.isMobileIframe=true;window.saveAsDefault='';window.postMessage('aurus-token', '*')";
  [self.webView evaluateJavaScript:script
                 completionHandler:^(id _Nullable data, NSError * _Nullable error) {
    if (error != nil) {
      NSLog(@"error %@", error);
    } else if (data != nil) {
      NSLog(@"data coming %@",data);
    }
  }];
}

@end