pod 'ClientAttestation', :podspec => './SDK'  // Configuration example, please replace with actual SDK podspec address

pod install

#import <TCBasCommon/TCBasCommon.h>
#import <ClientAttestation/ClientAttestation.h>

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // SDK initialization
    TCBasConfig *basConfig = [[TCBasConfig alloc] init];
    basConfig.baseUrl = @"www.example.com"; // Set to the business domain
    basConfig.logLevel = TCBCLogLevelTypeWARN; // Optional. Set the log level
    [TCBas initializeWithOptions:basConfig];
    return YES;
}

#import <ClientAttestation/ClientAttestation.h>

// Start the client authentication engine.
[[ClientAttestation sharedInstance] start];

#import <ClientAttestation/ClientAttestation.h>

// attestId
// Obtain from the console when actively initiating a challenge.
// Obtain from the 'EO-Attest-Challenge' header field in the http response when challenges are passively initiated.
NSString *attestId = @"your-attestId";
AttestParams *params = [[AttestParams alloc] init];
params.attestId = attestId;
params.webView = self.webView; // WebView used to display the Captcha page
params.reqTimeoutMillis = 60000; // Optional request timeout
[[ClientAttestation sharedInstance] attestWithParams:params
                                          callback:self];

// Implement the AttestCallbackDelegate protocol
#pragma mark - AttestCallbackDelegate
- (void)onSuccess:(NSString *)token {
    // Return the risk token and place it in the 'EO-Attest-Token' header field of the http request.
}

- (void)onError:(NSError *)error {
    // Error message callback
}

#import <ClientAttestation/ClientAttestation.h>

// Obtain client authentication token
[[ClientAttestation sharedInstance] getAttestationTokenWithCompletion:^(NSString *token) {
// Example: Add the token to your network request header
// Assume you are using URLSession or other networking libraries
    if (token) {
        // Your request object
        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://your-backend-api.com/data"]];
        [request setValue:token forHTTPHeaderField:@"EO-Attest-Token"];
        // Continue sending the request
    }
}];

#import <ClientAttestation/ClientAttestation.h>

// Assume your network request handling logic
- (void)sendAPIRequest:(NSMutableURLRequest *)request {
    NSURLSessionDataTask *task = [[NSURLSession sharedSession] dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
        if (error) {
            NSLog(@"Network request error: %@", error.localizedDescription);
            return;
        }
        
        NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)response;
        if (httpResponse.statusCode == 428) {
            // Received a 428 challenge, extract the challenge ID
            NSString *challengeId = httpResponse.allHeaderFields[@"EO-Attest-Challenge"];
            if (challengeId) {
                NSLog(@"Received a 428 challenge, challenge ID: %@", challengeId);
                
                // Execute the authentication challenge
                AttestParams *attestParams = [[AttestParams alloc] init];
                attestParams.attestId = challengeId;
                attestParams.webView = self.webView;
                
                [[ClientAttestation sharedInstance] attestWithParams:attestParams callback:self];
                
                // Note: You need to handle the AttestCallbackDelegate callbacks and resend the request in onSuccess.
            } else {
                NSLog(@"EO-Attest-Challenge header not found in 428 response");
            }
        } else if (httpResponse.statusCode == 200) {
            NSLog(@"Request succeeded!");
            // Process business data
        } else {
            NSLog(@"Request failed, status code: %ld", (long)httpResponse.statusCode);
            // Handle other errors
        }
    }];
    [task resume];
}

// Example call
// NSMutableURLRequest *initialRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://your-backend-api.com/protected-data"]];
// [self sendAPIRequest:initialRequest];

// Resend the request in the onSuccess method of AttestCallbackDelegate.
#pragma mark - AttestCallbackDelegate
- (void)onSuccess:(NSString *)token {
    NSLog(@"Challenge succeeded, obtained a new token: %@", token);
    // Resend the original request with the new token
    // Obtain the previous request object and resend it
    // For example:
    // NSMutableURLRequest *retryRequest = [self.lastFailedRequest mutableCopy]; // assuming you saved the last failed request
    // [retryRequest setValue:token forHTTPHeaderField:@"EO-Attest-Token"];
    // [self sendAPIRequest:retryRequest];
}

- (void)onError:(NSError *)error {
    NSLog(@"Authentication challenge failed: %@", error.localizedDescription);
}