Implement Prove Passive Authentication With Customer-Supplied Possession Fallback

// Object implementing AuthFinishStep interface
AuthFinishStep authFinishStep = new AuthFinishStep() {
  ...
};

// Objects implementing OtpStartStep/OtpFinishStep interfaces
OtpStartStep otpStartStep = new OtpStartStep() {
  ...
};

OtpFinishStep otpFinishStep = new OtpFinishStep() {
  ...
};

ProveAuth proveAuth = ProveAuth.builder()
    .withAuthFinishStep(authId -> verify(authId)) // verify(authId) call defined in #Validate the Mobile Phone section
    .withOtpFallback(otpStartStep, otpFinishStep)
    .withContext(this)
    .build();

ProveAuth proveAuth = ProveAuth.builder()
    .withAuthFinishStep(authId -> verify(authId))
    .withOtpFallback(otpStartStep, otpFinishStep)
    .withContext(this)
    .withTestMode(true) // Test mode flag
    .build();

public class MyAuthenticator {
    private final MyBackendClient backend = new MyBackendClient(); // Backend API client

    private final AuthFinishStep authFinishStep = new AuthFinishStep() {
        @Override
        void execute(String authId) {
            try {
                AuthFinishResponse response = backend.authFinish("My App", authId);
                ... // Check the authentication status returned in the response
            } catch (IOException e) {
                String failureCause = e.getCause() != null ? e.getCause().getMessage() : "Failed to request authentication results";
                // Authentication failed due to request failure
            }
        }
    };

    private ProveAuth proveAuth;

    public MyAuthenticator(Context context) {
        proveAuth = ProveAuth.builder()
          .withAuthFinishStep(authFinishStep)
          .withOtpFallback(otpStartStep, otpFinishStep)
          .withContext(context)
          .build();
    }

    public void authenticate() throws IOException, ProveAuthException {
        AuthStartResponse response = backend.authStart("My Prove Auth App");

        proveAuth.authenticate(response.getAuthToken());
    }
}

// Object implementing ProveAuthFinishStep protocols
let finishStep = FinishAuthStep()

// Objects implementing OtpStartStep/OtpFinishStep protocols
let otpStartStep = MobileOtpStartStep()
let otpFinishStep = MobileOtpFinishStep()

let proveAuthSdk: ProveAuth
proveAuthSdk = ProveAuth.builder(authFinish: finishStep)
  .withOtpFallback(otpStart: otpStartStep, otpFinish: otpFinishStep)
  .build()

proveAuthSdk = ProveAuth.builder(authFinish: finishStep)
  .withMobileAuthTestMode() // Test mode flag
  .build()

// authToken retrieved from your server via StartAuthRequest
proveAuthSdk.authenticate(authToken) { error in
  DispatchQueue.main.async {
    self.messages.finalResultMessage = "ProveAuth.authenticate returned error: \(error.localizedDescription)"
    print(self.messages.finalResultMessage)
  }
}