/// <summary>
/// Converts a PharmanetMessage to an HL7 FHIR DocumentReference model.
/// </summary>
/// <param name="messageModel">The PharmanetMessage to convert from.</param>
/// <param name="related">The optional ResourceReference representing a reference to the request message.</param>
/// <returns>Returns a new DocumentReference from the PharmanetMessage.
/// If the requestDocumentReference is provided, it used that to fill out cross-referenced data.
/// </returns>
public static DocumentReference ToDocumentReference(PharmanetMessageModel messageModel, ResourceReference?related = null)
{
DocumentReference documentReference = new DocumentReference();
documentReference.Status = DocumentReferenceStatus.Current;
documentReference.Date = DateTime.UtcNow;
documentReference.Id = messageModel.TransactionId; // set the GUID as the base artefact ID.
documentReference.MasterIdentifier = new Identifier(MasterIdentifierNamespace, MasterIdentifierUrnPrefix + messageModel.TransactionId);
DocumentReference.ContentComponent item = new DocumentReference.ContentComponent();
item.Attachment = new Attachment();
string hl7Message = Encoding.UTF8.GetString(Convert.FromBase64String(messageModel.Hl7Message));
item.Attachment.Data = Encoding.UTF8.GetBytes(hl7Message);
item.Attachment.ContentType = HL7v2ContentType;
documentReference.Content.Add(item);
if (related != null)
{
documentReference.Context = new DocumentReference.ContextComponent();
documentReference.Context.Related = new List <ResourceReference>();
documentReference.Context.Related.Add(related);
}
return(documentReference);
}
/// <summary>
/// Converts an HL7 FHIR DocumentReference model to a PharmanetMessage model.
/// </summary>
/// <param name="documentReference">The DocumentReference to convert from.</param>
/// <param name="base64Encode">A value indicating whether to base64 encode the HL7v2.</param>
/// <returns>Returns a new PharmanetMessage mapped from the provided DocumentReference.</returns>
public static PharmanetMessageModel ToPharmanetMessageModel(DocumentReference documentReference, bool base64Encode)
{
PharmanetMessageModel messageModel = new PharmanetMessageModel();
// HL7 FHIR spec for GUID/UUID has this mandatory prefix in the value field.
foreach (Match?m in Regex.Matches(documentReference.MasterIdentifier.Value, MasterIdentifierPattern))
{
GroupCollection groups = m !.Groups;
string value = groups[1].Value;
messageModel.TransactionId = value; // The GUID/UUID
break;
}
DocumentReference.ContentComponent[] content = documentReference.Content.ToArray();
byte[] data = content[0].Attachment.Data;
string contentType = content[0].Attachment.ContentType;
bool good = (data.Length > 0) && contentType.Equals(HL7v2ContentType, System.StringComparison.Ordinal);
messageModel.Hl7Message = good ? (base64Encode ? Convert.ToBase64String(data, Base64FormattingOptions.None) : Encoding.UTF8.GetString(data)) : string.Empty;
return(messageModel);
}
