/// <summary>
/// Creates a reference object which must be passed to the SwissQrCode instance
/// </summary>
/// <param name="referenceType">Type of the reference (QRR, SCOR or NON)</param>
/// <param name="reference">Reference text</param>
/// <param name="referenceTextType">Type of the reference text (QR-reference or Creditor Reference)</param>
/// <param name="unstructuredMessage">Unstructured message</param>
public Reference(ReferenceType referenceType, string reference = null, ReferenceTextType?referenceTextType = null, string unstructuredMessage = null)
{
this.referenceType = referenceType;
this.referenceTextType = referenceTextType;
if (referenceType.Equals(ReferenceType.NON) && reference != null)
{
throw new SwissQrCodeReferenceException("Reference is only allowed when referenceType not equals \"NON\"");
}
if (!referenceType.Equals(ReferenceType.NON) && reference != null && referenceTextType == null)
{
throw new SwissQrCodeReferenceException("You have to set an ReferenceTextType when using the reference text.");
}
if (referenceTextType.Equals(ReferenceTextType.QrReference) && reference != null && (reference.Length > 27))
{
throw new SwissQrCodeReferenceException("QR-references have to be shorter than 28 chars.");
}
if (referenceTextType.Equals(ReferenceTextType.QrReference) && reference != null && !Regex.IsMatch(reference, @"^[0-9]+$"))
{
throw new SwissQrCodeReferenceException("QR-reference must exist out of digits only.");
}
if (referenceTextType.Equals(ReferenceTextType.QrReference) && reference != null && !ChecksumMod10(reference))
{
throw new SwissQrCodeReferenceException("QR-references is invalid. Checksum error.");
}
if (referenceTextType.Equals(ReferenceTextType.CreditorReferenceIso11649) && reference != null && (reference.Length > 25))
{
throw new SwissQrCodeReferenceException("Creditor references (ISO 11649) have to be shorter than 26 chars.");
}
this.reference = reference;
if (unstructuredMessage != null && (unstructuredMessage.Length > 140))
{
throw new SwissQrCodeReferenceException("The unstructured message must be shorter than 141 chars.");
}
this.unstructuredMessage = unstructuredMessage;
}