validatePinCodeFormat function

String validatePinCodeFormat(
  1. String? pinCode
)

Implementation

String validatePinCodeFormat(String? pinCode) {
  final pinCodeRegex = RegExp(r'^\d{6}$');

  if (pinCode == null || pinCode.isEmpty) {
    return 'PIN Code is required';
  }

  if (!pinCodeRegex.hasMatch(pinCode)) {
    return 'PIN Code must be 6 digits';
  }

  return '';
}