package org.kuali.ole.ingest.function;
   
   import org.apache.log4j.Logger;
   import org.kuali.ole.DataCarrierService;
   import org.kuali.ole.OLEConstants;
   import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
   import org.kuali.rice.krms.framework.engine.Function;
   
   import java.sql.Timestamp;
  import java.text.DateFormat;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  
  /**
   * PatronMembershipExpiration is used for validating checkMembershipExpirationDate
   */
  public class OleRenewalDateComparison implements Function {
      private static final Logger LOG = Logger.getLogger(OleRenewalDateComparison.class);
      /**
       * This method takes the request and invoke the methods to checkMembershipExpirationDate.
       * @param arguments
       * @return  Object
       */
      @Override
      public Object invoke(Object... arguments) {
          LOG.info(" --------- Inside OleRenewalDateComparison ------------");
          DataCarrierService dataCarrierService = GlobalResourceLoader.getService(OLEConstants.DATA_CARRIER_SERVICE);
          boolean comparison = false;
          if(arguments!=null && arguments.length==1){
              Object object = arguments[0];
              if(object==null)
                  return false;
              Date orginalDueDate = null;
              if(object instanceof String){
                  DateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
                  try {
                      orginalDueDate= (Date)formatter.parse((String)object);
                  } catch (ParseException e) {
                      e.printStackTrace();
                  }
  
              }else{
                  orginalDueDate =(Date)object;
              }
              if(dataCarrierService.getData(OLEConstants.DUE_DATE)!=null){
                  Timestamp newDueDate =  (Timestamp) dataCarrierService.getData(OLEConstants.DUE_DATE);
                  comparison =checkRenewalDate(orginalDueDate,newDueDate);
              }
          }
  
          return comparison;
      }
  
      /**
       *  This method check the membership ExpiryDate with current date.
       * @param orginalDueDate
       * @param newDueDate
       * @return  boolean
       */
      private boolean checkRenewalDate(Date orginalDueDate,Date newDueDate){
          if(orginalDueDate!=null && newDueDate.compareTo(orginalDueDate)>=0){
              return  true;
          }
          return false;
      }
  }