internal static BaseSegment CreateResponseMshSegment(this Message message, string messageType = MessageHelper.ACK)
{
List <string?> newValues = new List <string?>() //SegmentHelper.MSH, message.GetDelimiters()--these first two fields are handled in parse fields below
{
message.GetReceivingApplication(), message.GetReceivingFacility(), message.GetSendingApplication(), message.GetSendingFacility(), //flip applications and facilities
message.GetMessageDateTime()?.FormatDate(message.Encoding), string.Empty /*security*/, messageType, message.GetMessageControlId(), message.GetProcessingId(),
message.GetVersionId(), string.Empty /*sequence number*/, string.Empty /*continuation pointer*/, string.Empty /*acceptacktype*/, string.Empty /*appacktype*/,
message.GetCountryCode(), message.GetCharacterSet(), message.GetPrincipalLanguage()
};
return(SegmentHelper.CreateSegment(message.Encoding, SegmentHelper.MSH, FieldHelper.ParseFields(newValues, message.Encoding, true, false, false)));
}
/// <summary>
/// Builds an ACK or NACK message for this message
/// </summary>
/// <param name="code">ack code like AA, AR, AE</param>
/// <param name="errMsg">error message to be sent with NACK -- infers that this is a NACK</param>
/// <returns>An ACK or NACK message if success, otherwise null</returns>
private static Result <Message> CreateAckorNackMessage(this Message message, string?code = null, string?nackErrorMessage = null)
{
BaseSegment msh = MshMessageHelper.CreateResponseMshSegment(message);
string responseCode = code ?? (string.IsNullOrWhiteSpace(nackErrorMessage) ? (message.GetAcceptAckType() ?? AA) : AE);//is acceptacktype a good default?
List <BaseField> fields = FieldHelper.ParseFields(new string?[] { responseCode, message.GetMessageControlId() ?? string.Empty, nackErrorMessage },
message.Encoding, false, false);
BaseSegment msa = SegmentHelper.CreateSegment(message.Encoding, MessageHelper.MSA, fields);
return(CreateMessageFromSegmentCollections(new List <SegmentCollection> {
new SegmentCollection(msh.Name, 1, new List <BaseSegment> {
msh
}), new SegmentCollection(msa.Name, 2, new List <BaseSegment> {
msa
})
}));
}