#1 Add initial Folder support

src/main/java/org/openehealth/app/xdstofhir/registry/common/mapper/FhirToXdsFolderMapper.java

@@ -0,0 +1,46 @@
+package org.openehealth.app.xdstofhir.registry.common.mapper;
+
+import static org.openehealth.app.xdstofhir.registry.common.MappingSupport.urnDecodedScheme;
+
+import java.util.function.Function;
+import java.util.stream.Collectors;
+
+import lombok.RequiredArgsConstructor;
+import org.hl7.fhir.r4.model.CodeableConcept;
+import org.hl7.fhir.r4.model.Identifier;
+import org.openehealth.app.xdstofhir.registry.common.fhir.MhdFolder;
+import org.openehealth.ipf.commons.ihe.xds.core.metadata.AvailabilityStatus;
+import org.openehealth.ipf.commons.ihe.xds.core.metadata.Folder;
+import org.openehealth.ipf.commons.ihe.xds.core.metadata.LocalizedString;
+import org.springframework.stereotype.Component;
+
+@Component
+@RequiredArgsConstructor
+public class FhirToXdsFolderMapper extends AbstractFhirToXdsMapper
+        implements Function<MhdFolder, Folder> {
+    @Override
+    public Folder apply(MhdFolder mhdFolder) {
+        if (mhdFolder.getIdentifier().isEmpty())
+            return null;
+        var patientId = obtainIndexPatientId(mhdFolder.getSubject());
+        if (patientId == null)
+            return null;
+        var folder = new Folder();
+        folder.setPatientId(patientId);
+        folder.setUniqueId(urnDecodedScheme(mhdFolder.getIdentifier().stream()
+                .filter(id -> Identifier.IdentifierUse.USUAL.equals(id.getUse())).findFirst().get().getValue()));
+        folder.setEntryUuid(bestQualifiedIdentified(mhdFolder.getIdentifier()).getId());
+        folder.setAvailabilityStatus(AvailabilityStatus.APPROVED);
+        folder.setLastUpdateTime(fromDateTime(mhdFolder.getDateElement()));
+        folder.getCodeList().addAll(mhdFolder.getDesignationType().stream()
+                .map(CodeableConcept::getCodingFirstRep)
+                .map(this::fromCode)
+                .collect(Collectors.toList()));
+        if (mhdFolder.getTitle() != null)
+            folder.setTitle(new LocalizedString(mhdFolder.getTitle()));
+        if (!mhdFolder.getNote().isEmpty())
+            folder.setComments(new LocalizedString(mhdFolder.getNoteFirstRep().getText()));
+        return folder;
+    }
+
+}