Integration Steps

implementation 'in.payu:native-otp-assist:1.6.3'

PayUOtpAssistConfig payUOtpAssistConfig = PayUOtpAssistConfig();
payUOtpAssistConfig.setPostData("POST_DATA_FOR_TRANSACTION");
PayUOtpAssist.open(
    Context context, 
    PayUOtpAssistCallback payUOtpAssistCallback, 
    PayUOtpAssistConfig payUOtpAssistConfig);

val payUOtpAssistConfig = PayUOtpAssistConfig()
payUOtpAssistConfig.postData = "POST_DATA_FOR_TRANSACTION"
PayUOtpAssist.open(
    context: Context, 
    payUOtpAssistCallback: PayUOtpAssistCallback,  
    payUOtpAssistConfig: PayUOtpAssistConfig
) 

PayUOtpAssistCallback payUOtpAssistCallback = new PayUOtpAssistCallback() {
    
    @Override
    public void onPaymentSuccess(@Nullable String merchantResponse, 
                                  @Nullable String payUResponse) {
        // Handle successful payment
    }

    @Override
    public void onPaymentFailure(@Nullable String merchantResponse, 
                                  @Nullable String payUResponse) {
        // Handle failed payment
    }

    @Override
    public void onError(@Nullable String errorCode, 
                        @Nullable String errorMessage) {
        // Handle errors
    }

    @Override
    public boolean shouldHandleFallback(PayUAcsRequest payUAcsRequest) {
        // Handle fallback to bank page
        return true;
    }
};

val payUOtpAssistCallback = object : PayUOtpAssistCallback {
    
    override fun onPaymentSuccess(merchantResponse: String?, 
                                   payUResponse: String?) {
        // Handle successful payment
    }

    override fun onPaymentFailure(merchantResponse: String?, 
                                   payUResponse: String?) {
        // Handle failed payment
    }

    override fun onError(errorCode: String?, 
                         errorMessage: String?) {
        // Handle errors
    }

    override fun shouldHandleFallback(payUAcsRequest: PayUAcsRequest): Boolean {
        // Handle fallback to bank page
        return true
    }
}

@Override
public boolean shouldHandleFallback(PayUAcsRequest payUAcsRequest) {
    // Option 1: Let SDK handle fallback (default)
    // return true;
    
    // Option 2: Handle fallback yourself using CustomBrowser
    CustomBrowserConfig customBrowserConfig = new CustomBrowserConfig(merchantKey, txnId);
    
    // Set the issuerUrl and issuerPostData to open in WebView
    if (payUAcsRequest.getIssuerUrl() != null && 
        payUAcsRequest.getIssuerPostData() != null) {
        customBrowserConfig.setPostURL(payUAcsRequest.getIssuerUrl());
        customBrowserConfig.setPayuPostData(payUAcsRequest.getIssuerPostData());
    } else if (payUAcsRequest.getAcsTemplate() != null) {
        customBrowserConfig.setHtmlData(payUAcsRequest.getAcsTemplate());
    } else {
        // Set the first url to open in WebView
        customBrowserConfig.setPostURL(url);
        customBrowserConfig.setPayuPostData(payuConfig.getData());
    }
    
    // Launch CustomBrowser
    new CustomBrowser().addCustomBrowser(
        this,
        customBrowserConfig,
        customBrowserCallback
    );
    
    // Return false to indicate you're handling the fallback
    return false;
}

override fun shouldHandleFallback(payUAcsRequest: PayUAcsRequest): Boolean {
    // Option 1: Let SDK handle fallback (default)
    // return true
    
    // Option 2: Handle fallback yourself using CustomBrowser
    val customBrowserConfig = CustomBrowserConfig(merchantKey, txnId)
    
    // Set the issuerUrl and issuerPostData to open in WebView
    if (!payUAcsRequest.issuerUrl.isNullOrEmpty() && 
        !payUAcsRequest.issuerPostData.isNullOrEmpty()) {
        customBrowserConfig.postURL = payUAcsRequest.issuerUrl
        customBrowserConfig.payuPostData = payUAcsRequest.issuerPostData
    } else if (!payUAcsRequest.acsTemplate.isNullOrEmpty()) {
        customBrowserConfig.htmlData = payUAcsRequest.acsTemplate
    } else {
        // Set the first url to open in WebView
        customBrowserConfig.postURL = url
        customBrowserConfig.payuPostData = payuConfig.data
    }
    
    // Launch CustomBrowser
    CustomBrowser().addCustomBrowser(
        this,
        customBrowserConfig,
        customBrowserCallback
    )
    
    // Return false to indicate you're handling the fallback
    return false
}