MAT-7038: Modify cs retrieve to return displayValues for vsac version

src/main/java/gov/cms/madie/terminology/models/CodeSystem.java

@@ -22,6 +22,7 @@ public class CodeSystem {
   private String title;
   private String name;
   private String version;
+  private String displayVersion; // match version HL7V3.0_2019-12 against fhir
   private String versionId;
   private String oid; // identifier[0].value oid of identifier List
   private Instant lastUpdated; // when queried

src/main/java/gov/cms/madie/terminology/service/FhirTerminologyService.java

@@ -25,8 +25,10 @@
 
 import java.time.Instant;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 @Service
 @Slf4j
@@ -122,7 +124,49 @@ private List<QdmValueSet.Concept> getValueSetConcepts(
   }
 
   public List<CodeSystem> getAllCodeSystems() {
-    return codeSystemRepository.findAll();
+    // remove items that are marked as not present in vsac to cut expense
+    List<CodeSystemEntry> codeSystemEntries = mappingService.getCodeSystemEntries().stream().filter(codeSystemEntry -> !codeSystemEntry.getOid().contains("NOT.IN.VSAC")).toList();
+    List<CodeSystem> codeSystems = codeSystemRepository.findAll();
+    List<CodeSystem> transformedResults = new ArrayList<>(Collections.emptyList());
+    codeSystems.forEach(codeSystem -> {
+      // if the oid shows up at all
+      int index = -1;
+      for (int i = 0; i < codeSystems.size(); i++) {
+        if (codeSystems.get(i).getOid().equals(codeSystem.getOid())) {
+          index = i;
+          break;
+        }
+      }
+      if(index != -1) {
+        CodeSystemEntry matchingEntry = null;
+        for (CodeSystemEntry entry : codeSystemEntries) {
+          if (entry.getOid().equals(codeSystem.getOid())) {
+            matchingEntry = entry;
+            break;
+          }
+        }
+        if (matchingEntry != null) {
+          AtomicBoolean usableVersionFound = new AtomicBoolean(false);
+          matchingEntry.getVersions().forEach(version -> {
+            // we use fhir csv to interact with api. goal here is to look for fhir version, then give users a display version
+            // that looks like vsac because that's what they understand.
+            if (version.getFhir().equals(codeSystem.getVersion()) && version.getVsac() != null) {
+              codeSystem.setDisplayVersion(version.getVsac());
+              transformedResults.add(codeSystem);
+              usableVersionFound.set(true);
+            }
+          });
+          if (usableVersionFound.get()){
+            log.info("CodeSystem title {} , version: {} was not found in mapping document", codeSystem.getTitle(), codeSystem.getVersion());
+          }
+        }
+      }
+      else {
+        // it was not found, we log that it's not located within vsac.
+        log.info("CodeSystem title {} , version: {} was not found in mapping document", codeSystem.getTitle(), codeSystem.getName());
+      }
+    });
+    return transformedResults;
   }
 
   public List<CodeSystem> retrieveAllCodeSystems(UmlsUser umlsUser) {

src/test/java/gov/cms/madie/terminology/service/FhirTerminologyServiceTest.java

@@ -35,6 +35,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.lang.reflect.Array;
 import java.nio.charset.Charset;
 import java.time.Instant;
 import java.util.*;
@@ -334,9 +335,20 @@ void testRetrieveAllCodeSystemsWithInsert() {
   void testGetAllCodeSystems() {
     var c1 = new gov.cms.madie.terminology.models.CodeSystem();
     c1.setTitle("t1");
+    c1.setOid("fakeoid1");
+    c1.setVersion("1.0");
     var c2 = new gov.cms.madie.terminology.models.CodeSystem();
     c2.setTitle("t2");
+    c2.setOid("fakeoid2");
+    c2.setVersion("2.0");
+    CodeSystemEntry.Version cv1 = new CodeSystemEntry.Version().toBuilder().fhir("1.0").vsac("exists").build();
+    CodeSystemEntry.Version cv2 = new CodeSystemEntry.Version().toBuilder().fhir("2.0").vsac("exists").build();
+    var ce1 = new CodeSystemEntry().toBuilder().versions(java.util.Collections.singletonList(cv1)).oid("fakeoid1").build();
+    var ce2 = new CodeSystemEntry().toBuilder().versions(java.util.Collections.singletonList(cv2)).oid("fakeoid2").build();
+
+    List<CodeSystemEntry> codeSystemEntries = Arrays.asList(ce1, ce2);
     List<gov.cms.madie.terminology.models.CodeSystem> codeSystems = Arrays.asList(c1, c2);
+    when(mappingService.getCodeSystemEntries()).thenAnswer(invocation -> codeSystemEntries);
     when(codeSystemRepository.findAll()).thenAnswer(invocation -> codeSystems);
     List<gov.cms.madie.terminology.models.CodeSystem> result =
         fhirTerminologyService.getAllCodeSystems();