/// <summary>
/// Search for Documents or Get one by _id
/// </summary>
/// <remarks>
/// As the NRLS is implemented with just a search and not read, to read a document the _id parameter is supplied
/// </remarks>
public async Task <Bundle> Find(FhirRequest request)
{
ValidateResource(request.StrResourceType);
request.ProfileUri = _resourceProfile;
var id = request.IdParameter;
//We are going to be strict hear for search and only proceed if we have valid parameters
if (request.InvalidParameters.Count() > 0)
{
throw new HttpFhirException("Invalid parameters", OperationOutcomeFactory.CreateInvalidParameter($"Invalid parameter: {string.Join(", ", request.InvalidParameters)}"), HttpStatusCode.BadRequest);
}
//If we have an _id param it should be the only param so check for that here.
if (request.HasIdParameter)
{
ObjectId mongoId;
if (!ObjectId.TryParse(id, out mongoId))
{
throw new HttpFhirException("Invalid _id parameter", OperationOutcomeFactory.CreateNotFound(id), HttpStatusCode.NotFound);
}
if (request.QueryParameters.Count() > 1)
{
throw new HttpFhirException("Invalid _id parameter combination", OperationOutcomeFactory.CreateInvalidParameter("Invalid parameter: _id"), HttpStatusCode.BadRequest);
}
request.Id = id;
request.IsIdQuery = true;
var results = await _fhirSearch.GetAsBundle <DocumentReference>(request);
var response = ParseRead(results, id) as Bundle;
return(response);
}
//If we are here then it is a standard search query
var patient = request.QueryParameters.FirstOrDefault(x => x.Item1 == "subject");
if (patient != null)
{
var invalidPatient = _fhirValidation.ValidatePatientParameter(patient.Item2);
if (invalidPatient != null)
{
throw new HttpFhirException("Missing or Invalid patient parameter", invalidPatient, HttpStatusCode.BadRequest);
}
var nhsNumber = _fhirValidation.GetSubjectReferenceParameterId(patient.Item2);
var patientRequest = NrlsPointerHelper.CreatePatientSearch(request, nhsNumber);
var patients = await _fhirSearch.Find <Patient>(patientRequest);
if (patients.Entry.Count == 0)
{
throw new HttpFhirException("Unknown patient", OperationOutcomeFactory.CreatePatientNotFound(nhsNumber), HttpStatusCode.NotFound);
}
}
else
{
throw new HttpFhirException("Missing or Invalid patient parameter", OperationOutcomeFactory.CreateInvalidParameter("Missing parameter: subject"), HttpStatusCode.BadRequest);
}
var custodian = request.QueryParameters.FirstOrDefault(x => x.Item1 == "custodian");
var useCustodianIdentifierValidation = false;
if (custodian == null)
{
//temporarily also support the incorrectly spec'd custodian.identifier parameter
//custodian is a reference type and should not be used in this way
custodian = request.QueryParameters.FirstOrDefault(x => x.Item1 == "custodian.identifier");
useCustodianIdentifierValidation = custodian != null;
}
if (custodian != null)
{
//temporarily also support the incorrectly spec'd custodian.identifier parameter
var invalidCustodian = useCustodianIdentifierValidation ? _fhirValidation.ValidateCustodianIdentifierParameter(custodian.Item2) :
_fhirValidation.ValidateCustodianParameter(custodian.Item2);
if (invalidCustodian != null)
{
throw new HttpFhirException("Missing or Invalid custodian parameter", invalidCustodian, HttpStatusCode.BadRequest);
}
var custodianOrgCode = useCustodianIdentifierValidation? _fhirValidation.GetOrganizationParameterIdentifierId(custodian.Item2) :
_fhirValidation.GetOrganizationParameterId(custodian.Item2);
var custodianRequest = NrlsPointerHelper.CreateOrgSearch(request, custodianOrgCode);
var custodians = await _fhirSearch.Find <Organization>(custodianRequest);
if (custodians.Entry.Count == 0)
{
var invalidOrg = OperationOutcomeFactory.CreateOrganizationNotFound(custodianOrgCode);
throw new HttpFhirException("Missing or Invalid custodian parameter", invalidOrg, HttpStatusCode.NotFound);
}
//This is now out of scope
//var invalidOrgInteraction = ValidateOrganisationInteraction(request.RequestingAsid, custodianOrgCode, true);
//if (invalidOrgInteraction != null)
//{
// throw new HttpFhirException("Invalid Provider Request Exception", invalidOrgInteraction, HttpStatusCode.Unauthorized);
//}
}
var type = request.QueryParameters.FirstOrDefault(x => x.Item1 == "type.coding");
if (type != null)
{
var invalidType = _fhirValidation.ValidTypeParameter(type.Item2);
if (invalidType != null)
{
throw new HttpFhirException("Missing or Invalid type parameter", invalidType, HttpStatusCode.BadRequest);
}
}
var summary = request.QueryParameters.FirstOrDefault(x => x.Item1 == "_summary");
if (summary != null)
{
var validSummaryParams = new string[] { "subject", "_format", "_summary" };
var invalidSummaryParams = request.QueryParameters.Where(x => !validSummaryParams.Contains(x.Item1));
OperationOutcome invalidSummary = null;
if (invalidSummaryParams.Any())
{
var invalidSummaryParamsList = string.Join(", ", invalidSummaryParams.Select(x => $"{x.Item1}={x.Item2}"));
invalidSummary = OperationOutcomeFactory.CreateInvalidParameter("Invalid parameter", $"Unsupported search parameter - {invalidSummaryParamsList}");
throw new HttpFhirException("Missing or Invalid type parameter", invalidSummary, HttpStatusCode.BadRequest);
}
invalidSummary = _fhirValidation.ValidSummaryParameter(summary.Item2);
if (invalidSummary != null)
{
throw new HttpFhirException("Missing or Invalid type parameter", invalidSummary, HttpStatusCode.BadRequest);
}
request.IsSummary = true;
}
//Only allow current pointers
var queryParameters = request.QueryParameters.ToList();
queryParameters.Add(new Tuple <string, string>("status", "current"));
request.QueryParameters = queryParameters;
request.AllowedParameters = request.AllowedParameters.Concat(new string[] { "status" }).ToArray();
return(await _fhirSearch.Find <DocumentReference>(request));
}
