processPayment method

Future<PaymentProcessingResponse> processPayment({ required String sessionToken, required String cardholderName, String? email, Map<String, dynamic>? billingAddress, Map<String, dynamic>? browserInfo, String? birthDay, String? selectedLanguage, })

Process payment after card data has been collected via HPF

sessionToken - Session token obtained from getSessionToken() cardholderName - Cardholder name (required) email - Customer email (optional) billingAddress - Billing address object (optional) browserInfo - Browser information object (optional) birthDay - Birth day in format YYYY-MM-DD (optional) selectedLanguage - Selected language code (optional)

Returns PaymentProcessingResponse with result, redirect URL, etc.

Implementation

Future<PaymentProcessingResponse> processPayment({
  required String sessionToken,
  required String cardholderName,
  String? email,
  Map<String, dynamic>? billingAddress,
  Map<String, dynamic>? browserInfo,
  String? birthDay,
  String? selectedLanguage,
}) async {
  final uri = Uri.parse('$checkoutHost/api/v1/processing/purchase/card');

  final requestBody = <String, dynamic>{
    'name': cardholderName,
    'with_hosted_fields': true,
  };

  if (email != null) requestBody['email'] = email;
  if (billingAddress != null) requestBody['billing_address'] = billingAddress;
  if (browserInfo != null) requestBody['browser_info'] = browserInfo;
  if (birthDay != null) requestBody['birth_day'] = birthDay;
  if (selectedLanguage != null) requestBody['selected_language'] = selectedLanguage;

  final headers = <String, String>{
    'Content-Type': 'application/json',
    'Token': sessionToken,
  };

  try {
    final response = await http.post(
      uri,
      headers: headers,
      body: jsonEncode(requestBody),
    );

    if (response.statusCode == 200) {
      final jsonResponse = jsonDecode(response.body) as Map<String, dynamic>;
      final paymentResponse = PaymentProcessingResponse.fromJson(jsonResponse);
      return paymentResponse;
    } else {
      final errorBody = jsonDecode(response.body) as Map<String, dynamic>?;
      final errorMessage = errorBody?['error_message'] as String? ??
                         'Payment processing failed';
      throw Exception(errorMessage);
    }
  } catch (e) {
    // Re-throw with clean error message
    if (e is Exception) {
      rethrow;
    }
    throw Exception('Error processing payment: $e');
  }
}