package org.kuali.ole.docstore.discovery.service;
   
   import org.kuali.ole.docstore.common.document.content.instance.Instance;
   import org.kuali.ole.docstore.common.document.content.instance.Item;
   import org.kuali.ole.docstore.common.document.content.instance.Items;
   import org.kuali.ole.docstore.discovery.bo.OleDiscoveryMarcExportProfile;
   import org.kuali.ole.docstore.discovery.bo.OleDiscoveryMarcMappingField;
   import org.kuali.ole.docstore.model.xmlpojo.ingest.AdditionalAttributes;
   import org.kuali.ole.docstore.model.xmlpojo.work.bib.marc.DataField;
  import org.kuali.ole.docstore.model.xmlpojo.work.bib.marc.SubField;
  import org.kuali.ole.docstore.common.document.content.instance.InstanceCollection;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.logging.Logger;
  
  
  /**
   * Created with IntelliJ IDEA.
   * User: ?
   * Date: 2/20/13
   * Time: 12:16 PM
   * To change this template use File | Settings | File Templates.
   */
  public class OleInstanceToMarcConvertor {
  
      private static final Logger LOG = Logger.getLogger(String.valueOf(OleInstanceToMarcConvertor.class));
  
      public List<DataField> generateDataField(InstanceCollection instanceCollection, OleDiscoveryMarcExportProfile oleDiscoveryMarcExportProfile) {
          List<Instance> instanceList = new ArrayList<Instance>();
          List<DataField> dataFieldList = new ArrayList<DataField>();
          if (instanceCollection != null) {
              DataField dataField;
              Instance instance;
              List<SubField> SubFieldList;
              for (int i = 0; i < instanceCollection.getInstance().size(); i++) {
                  instance = instanceCollection.getInstance().get(i);
                  Items items = (Items) instance.getItems();
                  for (int j = 0; j < items.getItem().size(); j++) {
                      dataField = new DataField();
                      dataField.setTag(oleDiscoveryMarcExportProfile.getDataField());
                      dataField.setSubFields(generateSubFields(oleDiscoveryMarcExportProfile, instance, items.getItem().get(j)));
                      dataFieldList.add(dataField);
                  }
              }
          }
          return dataFieldList;
      }
  
      private List<SubField> generateSubFields(OleDiscoveryMarcExportProfile oleDiscoveryMarcExportProfile, Instance instance, Item item) {
          List<SubField> subFieldList = new ArrayList<SubField>();
          List<OleDiscoveryMarcMappingField> oleDiscoveryMarcMappingFieldList = oleDiscoveryMarcExportProfile.getOleDiscoveryMarcMappingFields();
  
          for (OleDiscoveryMarcMappingField mappingField : oleDiscoveryMarcMappingFieldList) {
              if (mappingField.getItemField().equalsIgnoreCase("Call Number")) {
                  subFieldList.add(generateMarcCallNumber(instance, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Class Scheme")) {
                  subFieldList.add(generateMarcCallSchema(instance, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Copy Number")) {
                  subFieldList.add(generateMarcCopyNumber(item, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Item Id")) {
                  subFieldList.add(generateMarcItemNumber(item, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Type")) {
                  subFieldList.add(generateMarcItemType(item, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Date Created")) {
                  subFieldList.add(generateMarcDateCreated(instance, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Current Location")) {
                  subFieldList.add(generateCurrentLocation(item, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Home Location")) {
                  subFieldList.add(generateHomeLocation(instance, mappingField.getMarcField()));
              }
              if (mappingField.getItemField().equalsIgnoreCase("Library")) {
                  subFieldList.add(generateLibraryLocation(instance, mappingField.getMarcField()));
              }
          }
  
          return subFieldList;
      }
  
      private SubField generateMarcCallNumber(Instance instance, String code) {
          SubField subField = new SubField();
          subField.setCode(code);
          subField.setValue("");
          if (instance != null && instance.getOleHoldings() != null && instance.getOleHoldings().getCallNumber() != null && instance.getOleHoldings().getCallNumber().getNumber() != null) {
              subField.setValue(instance.getOleHoldings().getCallNumber().getNumber());
          }
          return subField;
      }
  
      private SubField generateMarcCallSchema(Instance instance, String code) {
          SubField subField = new SubField();
          subField.setCode(code);
         subField.setValue("");
         if (instance != null && instance.getOleHoldings() != null && instance.getOleHoldings().getCallNumber() != null && instance.getOleHoldings().getCallNumber().getType() != null) {
             subField.setValue(instance.getOleHoldings().getCallNumber().getType());
         }
         return subField;
     }
 
     private SubField generateMarcCopyNumber(Item item, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         if (item != null && item.getCopyNumber() != null) {
             subField.setValue(item.getCopyNumber());
         }
         return subField;
     }
 
     private SubField generateMarcEnumeration(Item item, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         if (item != null && item.getEnumeration() != null) {
             subField.setValue(item.getEnumeration());
         }
         return subField;
     }
 
     private SubField generateMarcItemNumber(Item item, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         if (item != null && item.getAccessInformation() != null && item.getAccessInformation().getBarcode() != null) {
             subField.setValue(item.getAccessInformation().getBarcode());
         }
         return subField;
     }
 
     private SubField generateMarcItemType(Item item, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         if (item != null && item.getItemType() != null) {
             subField.setValue(item.getItemType().getCodeValue());
         }
         return subField;
     }
 
 
     private SubField generateMarcDateCreated(Instance instance, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         try {
             if (instance != null && instance.getExtension().getContent() != null) {
                 List<Object> additionalAttributes = (List<Object>) instance.getExtension().getContent();
                 if (additionalAttributes.size() > 0) {
                     AdditionalAttributes additionalAttributes1 = (AdditionalAttributes) additionalAttributes.get(0);
                     subField.setValue(additionalAttributes1.getDateEntered());
                 }
             }
         } catch (Exception e) {
             LOG.info("Date Created value is not available" + e);
         }
         return subField;
     }
 
     private SubField generateCurrentLocation(Item item, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         try {
             if (item != null && item.getLocation().getLocationLevel().getName() != null) {
                 if (!item.getLocation().getLocationLevel().equals("") && item.getLocation().getLocationLevel() != null) {
                     if (item.getLocation().getLocationLevel().getName().equals("Shelving Location")) {
                         subField.setValue(item.getLocation().getLocationLevel().getName());
                     }
                 }
             }
         } catch (Exception e) {
             LOG.info("Current Location is not available" + e );
         }
         return subField;
     }
 
     private SubField generateHomeLocation(Instance instance, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         try {
             if (instance != null) {
                 if (!instance.getOleHoldings().getLocation().equals("") && instance.getOleHoldings().getLocation().getLocationLevel() != null) {
                     if (instance.getOleHoldings().getLocation().getLocationLevel().getName().equals("Collection")) {
                         subField.setValue(instance.getOleHoldings().getLocation().getLocationLevel().getName());
                     }
                 }
             }
         } catch (Exception e) {
             LOG.info("Home Location is not available" + e);
         }
         return subField;
     }
 
 
     private SubField generateLibraryLocation(Instance instance, String code) {
         SubField subField = new SubField();
         subField.setCode(code);
         subField.setValue("");
         try {
             if (instance != null) {
                 if (!instance.getOleHoldings().getLocation().equals("") && instance.getOleHoldings().getLocation().getLocationLevel() != null) {
                     if (instance.getOleHoldings().getLocation().getLocationLevel().getName().equals("Library")) {
                         subField.setValue(instance.getOleHoldings().getLocation().getLocationLevel().getName());
                     }
                 }
             }
         } catch (Exception e) {
             LOG.info("Library Location is not available" + e);
         }
         return subField;
     }
 
 }