/*
    * Copyright 2009 the original author or authors.
    * 
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *     
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.openehealth.ipf.commons.ihe.xds.core.transform.ebxml;
  
  import static org.apache.commons.lang3.Validate.notNull;
  import static org.openehealth.ipf.commons.ihe.xds.core.metadata.Vocabulary.*;
  import static org.openehealth.ipf.commons.ihe.xds.core.metadata.Timestamp.toHL7;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLClassification;
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLFactory;
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLObjectLibrary;
  import org.openehealth.ipf.commons.ihe.xds.core.ebxml.EbXMLRegistryPackage;
  import org.openehealth.ipf.commons.ihe.xds.core.metadata.Code;
  import org.openehealth.ipf.commons.ihe.xds.core.metadata.Folder;
  
  /**
   * Transforms between a {@link Folder} and its ebXML 2.1 representation.
   * @author Jens Riemschneider
   */
  public class FolderTransformer extends XDSMetaClassTransformer<EbXMLRegistryPackage, Folder> {
      private final EbXMLFactory factory;
  
      private final CodeTransformer codeTransformer;
  
      /**
       * Constructs the transformer
       * @param factory
       *          factory for version independent ebXML objects. 
       */
      public FolderTransformer(EbXMLFactory factory) {
          super(FOLDER_PATIENT_ID_EXTERNAL_ID, 
                  FOLDER_LOCALIZED_STRING_PATIENT_ID, 
                  FOLDER_UNIQUE_ID_EXTERNAL_ID,
                  FOLDER_LOCALIZED_STRING_UNIQUE_ID);
  
          notNull(factory, "factory cannot be null");
  
          this.factory = factory;
          codeTransformer = new CodeTransformer(factory);
      }
      
      @Override
      protected EbXMLRegistryPackage createEbXMLInstance(String id, EbXMLObjectLibrary objectLibrary) {
          return factory.createRegistryPackage(id, objectLibrary);
      }
      
      @Override
      protected Folder createMetaClassInstance() {
          return new Folder();
      }
      
      @Override
      protected void addAttributes(Folder metaData, EbXMLRegistryPackage ebXML, EbXMLObjectLibrary objectLibrary) {
          super.addAttributes(metaData, ebXML, objectLibrary);
          ebXML.setStatus(metaData.getAvailabilityStatus());                
          ebXML.setHome(metaData.getHomeCommunityId());
      }
      
      @Override
      protected void addAttributesFromEbXML(Folder metaData, EbXMLRegistryPackage ebXML) {
          super.addAttributesFromEbXML(metaData, ebXML);
          metaData.setAvailabilityStatus(ebXML.getStatus());        
          metaData.setHomeCommunityId(ebXML.getHome());
      }
  
      @Override
      protected void addSlotsFromEbXML(Folder folder, EbXMLRegistryPackage regPackage) {
          super.addSlotsFromEbXML(folder, regPackage);        
          
          folder.setLastUpdateTime(regPackage.getSingleSlotValue(SLOT_NAME_LAST_UPDATE_TIME));
      }
  
      @Override
      protected void addSlots(Folder folder, EbXMLRegistryPackage regPackage, EbXMLObjectLibrary objectLibrary) {
          super.addSlots(folder, regPackage, objectLibrary);
          
          regPackage.addSlot(SLOT_NAME_LAST_UPDATE_TIME, toHL7(folder.getLastUpdateTime()));
      }
  
      @Override
      protected void addClassificationsFromEbXML(Folder folder, EbXMLRegistryPackage regPackage) {
          super.addClassificationsFromEbXML(folder, regPackage);
          
         List<Code> codes = folder.getCodeList();
         codes.addAll(regPackage.getClassifications(FOLDER_CODE_LIST_CLASS_SCHEME).stream()
                 .map(codeTransformer::fromEbXML)
                 .collect(Collectors.toList()));
 
         List<EbXMLClassification> limitedMetadata = regPackage.getClassifications(FOLDER_LIMITED_METADATA_CLASS_SCHEME);
         folder.setLimitedMetadata(! limitedMetadata.isEmpty());
     }
 
     @Override
     protected void addClassifications(Folder folder, EbXMLRegistryPackage regPackage, EbXMLObjectLibrary objectLibrary) {
         super.addClassifications(folder, regPackage, objectLibrary);
         
         for (Code codeListElem : folder.getCodeList()) {
             EbXMLClassification code = codeTransformer.toEbXML(codeListElem, objectLibrary);
             regPackage.addClassification(code, FOLDER_CODE_LIST_CLASS_SCHEME);
         }
 
         if (folder.isLimitedMetadata()) {
             EbXMLClassification classification = factory.createClassification(objectLibrary);
             regPackage.addClassification(classification, FOLDER_LIMITED_METADATA_CLASS_SCHEME);
         }
     }
 }