package org.kuali.ole.deliver.controller;
   
   import org.apache.commons.collections.CollectionUtils;
   import org.apache.commons.lang3.StringUtils;
   import org.apache.log4j.Logger;
   import org.kuali.ole.deliver.bo.OlePatronDocument;
   import org.kuali.ole.deliver.bo.OleProxyPatronDocument;
   import org.kuali.ole.deliver.controller.checkout.CircUtilController;
   import org.kuali.ole.deliver.drools.DroolsConstants;
  import org.kuali.ole.deliver.form.CircForm;
  import org.kuali.ole.deliver.form.OleLoanForm;
  import org.kuali.ole.deliver.util.ErrorMessage;
  import org.kuali.ole.deliver.util.OlePatronRecordUtil;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.utility.OleStopWatch;
  import org.kuali.rice.krad.web.form.UifFormBase;
  
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * Created by pvsubrah on 6/4/15.
   */
  
  public class PatronLookupCircController extends CircUtilController {
  
      private static final Logger LOG = Logger.getLogger(PatronLookupCircController.class);
      private OlePatronRecordUtil olePatronRecordUtil;
  
      public ErrorMessage searchPatron(UifFormBase form) {
          ErrorMessage errorMessage = null;
          OleStopWatch oleStopWatch = new OleStopWatch();
          oleStopWatch.start();
          CircForm circForm = (CircForm) form;
          try {
              OlePatronDocument patronDocument = circForm.getPatronDocument();
              if (null != patronDocument && StringUtils.isBlank(patronDocument.getBarcode())) {
                  patronDocument = getOlePatronRecordUtil().getPatronRecordByBarcode(circForm
                          .getPatronBarcode());
                  circForm.setPatronDocument(patronDocument);
              }
              String[] expectedRules = {};
              errorMessage = processRules(circForm, patronDocument, expectedRules);
          } catch (Exception e) {
              errorMessage = new ErrorMessage();
              errorMessage.setErrorMessage("Invalid Patron Barcode. Please try again!");
              errorMessage.setErrorCode(DroolsConstants.GENERAL_MESSAGE_FLAG);
              LOG.error("Exception while search patron time", e);
              return errorMessage;
          }
          oleStopWatch.end();
          LOG.info("Time taken to look up a patron:" + oleStopWatch.getTotalTime() + " ms");
          return errorMessage;
      }
  
      public ErrorMessage processPatronSearchPostProxyHandling(UifFormBase form) {
          CircForm circForm = (CircForm) form;
          ErrorMessage errorMessage = null;
          circForm.setProxyCheckDone(true);
  
          OlePatronDocument patronDocument = circForm.getPatronDocument();
          Boolean selfCheckOut = patronDocument.isCheckoutForSelf();
          if (!selfCheckOut) {
              List<OleProxyPatronDocument> oleProxyPatronDocumentList = patronDocument.getOleProxyPatronDocumentList();
              if (!CollectionUtils.isEmpty(oleProxyPatronDocumentList)) {
                  OlePatronDocument realOlePatronDocument = identifyOlePatronDocumentForCheckout(oleProxyPatronDocumentList);
                  if (null != realOlePatronDocument) {
                      patronDocument.setSelectedProxyForPatron(realOlePatronDocument);
                      String[] expectedRules = {};
                      errorMessage = processRules(circForm,realOlePatronDocument, expectedRules);
                  }
              }
          }
  
          return errorMessage;
      }
  
      /**
       *
       * @param circForm
       * @param olePatronDocument
       * @param expectedRules
       * @return
       *
       * OlePatronDocument is passed because it could be either the borrower whose barcode was scanned
       * or the Proxy Borrower; Hence we cannot retrieve it from the form.
       */
      public ErrorMessage processRules(CircForm circForm, OlePatronDocument olePatronDocument, String[] expectedRules) {
          ErrorMessage errorMessage = getOlePatronRecordUtil().fireRules(olePatronDocument, expectedRules);
          circForm.setErrorMessage(errorMessage);
          return errorMessage;
  
      }
  
      private OlePatronDocument identifyOlePatronDocumentForCheckout(List<OleProxyPatronDocument> oleProxyPatronDocuments) {
          for (Iterator<OleProxyPatronDocument> iterator = oleProxyPatronDocuments.iterator(); iterator.hasNext(); ) {
              OleProxyPatronDocument proxyPatronDocument = iterator.next();
              OlePatronDocument olePatronDocument = proxyPatronDocument.getOlePatronDocument();
              if (olePatronDocument.isCheckoutForSelf()) {
                 return olePatronDocument;
             }
         }
         return null;
     }
 
     public boolean hasProxyPatrons(UifFormBase form) {
         CircForm circForm = (CircForm) form;
         return CollectionUtils.isNotEmpty(circForm.getPatronDocument().getOleProxyPatronDocumentList());
     }
 
     //TODO: Do we need to handle lost Patron?
     private void handleLostPatron(OleLoanForm oleLoanForm) {
         if (oleLoanForm.getOlePatronDocument().isLostPatron()) {
             oleLoanForm.setBlockUser(true);
         } else {
             oleLoanForm.setBlockUser(false);
         }
     }
 
     public OlePatronRecordUtil getOlePatronRecordUtil() {
         if (null == olePatronRecordUtil) {
             olePatronRecordUtil = (OlePatronRecordUtil) SpringContext.getBean("olePatronRecordUtil");
         }
         return olePatronRecordUtil;
     }
 
 
 }