private static Resource ValidateCodeOperation(string systemURL, NameValueCollection queryParam)
{
string codeVal = Utilities.GetQueryValue("code", queryParam);
string displayVal = Utilities.GetQueryValue("display", queryParam);
string languageVal = Utilities.GetQueryValue("displayLanguage", queryParam);
if (!string.IsNullOrEmpty(languageVal) && languageVal != "en-NZ")
{
throw new Exception(UNSUPPORTED_DISPLAY_LANGUAGE);
}
FhirBoolean validCode = new FhirBoolean(false);
FhirString validDisplay = new FhirString();
if (FhirSnomed.IsValidURI(systemURL))
{
validCode = new FhirBoolean(FhirSnomed.ValidateCode(codeVal, displayVal, out string prefTerm));
validDisplay = new FhirString(prefTerm);
}
else
{
CodeSystem codeSys = GetCodeSystem(TerminologyOperation.validate_code, systemURL, queryParam);
foreach (CodeSystem.ConceptDefinitionComponent cc in codeSys.Concept)
{
if (string.IsNullOrEmpty(displayVal))
{
validCode = new FhirBoolean(true);
validDisplay = new FhirString(cc.Display);
}
else if (displayVal.Trim().ToLower() == cc.Display.Trim().ToLower())
{
validCode = new FhirBoolean(true);
validDisplay = new FhirString(cc.Display);
}
else
{
validDisplay = new FhirString(cc.Display);
}
}
}
// build return parameters resource from search result
Parameters param = new Parameters();
param.Add("result", validCode);
if (validCode.Value == false)
{
param.Add("message", new FhirString("The code/display value " + codeVal + " / " + displayVal + " passed is incorrect"));
}
if (!string.IsNullOrEmpty(validDisplay.Value))
{
param.Add("display", validDisplay);
}
return(param);
}
private static CodeSystem GetCodeSystem(TerminologyOperation termOp, string systemURL, NameValueCollection queryParam)
{
CodeSystem codeSys = new CodeSystem();
string codeVal = Utilities.GetQueryValue("code", queryParam);
string versionVal = Utilities.GetQueryValue("version", queryParam);
string languageVal = Utilities.GetQueryValue("displayLanguage", queryParam);
// NB: these won't be passed in a GET request & the POST processing places the atomic elements in the queryParam collection
//string codingVal = Utilities.GetQueryValue("coding", queryParam);
//string codeableConceptVal = Utilities.GetQueryValue("codeableConcept", queryParam)
if (string.IsNullOrEmpty(systemURL))
{
throw new Exception(MISSING_CODESYSTEM);
}
else if (string.IsNullOrEmpty(codeVal))
{
throw new Exception(MISSING_CODE_CODING);
}
else if (!string.IsNullOrEmpty(languageVal) && languageVal != "en-NZ")
{
throw new Exception(UNSUPPORTED_DISPLAY_LANGUAGE);
}
if (systemURL == NzRegion.URI)
{
NzRegion nzr = new NzRegion(termOp, versionVal, codeVal, string.Empty, -1, -1);
codeSys = nzr.codeSystem;
}
else if (systemURL == NzEthnicityL1.URI)
{
NzEthnicityL1 nzEth1 = new NzEthnicityL1(termOp, versionVal, codeVal, string.Empty, -1, -1);
codeSys = nzEth1.codeSystem;
}
else if (systemURL == NzEthnicityL2.URI)
{
NzEthnicityL2 nzEth2 = new NzEthnicityL2(termOp, versionVal, codeVal, string.Empty, -1, -1);
codeSys = nzEth2.codeSystem;
}
else if (systemURL == NzEthnicityL3.URI)
{
NzEthnicityL3 nzEth3 = new NzEthnicityL3(termOp, versionVal, codeVal, string.Empty, -1, -1);
codeSys = nzEth3.codeSystem;
}
else if (systemURL == NzEthnicityL4.URI)
{
NzEthnicityL4 nzEth4 = new NzEthnicityL4(termOp, versionVal, codeVal, string.Empty, -1, -1);
codeSys = nzEth4.codeSystem;
}
else if (systemURL == NzMt.URI)
{
NzMt nzmt = new NzMt(termOp, versionVal, codeVal, string.Empty, string.Empty, -1, -1);
codeSys = nzmt.codeSystem;
}
else if (systemURL == FhirLoinc.URI)
{
FhirLoinc loinc = new FhirLoinc(termOp, versionVal, codeVal, string.Empty, string.Empty, -1, -1, string.Empty);
codeSys = loinc.codeSystem;
}
else if (systemURL == FhirRxNorm.URI)
{
FhirRxNorm rxnorm = new FhirRxNorm(termOp, versionVal, codeVal, string.Empty, string.Empty, -1, -1);
codeSys = rxnorm.codeSystem;
}
else if (FhirSnomed.IsValidURI(systemURL))
{
FhirSnomed snomed = new FhirSnomed(termOp, versionVal, codeVal, string.Empty, string.Empty, -1, -1, string.Empty, string.Empty);
codeSys = snomed.codeSystem;
}
else
{
throw new Exception(UNSUPPORTED_CODESYSTEM);
}
return(codeSys);
}
