package org.kuali.ole.loan.controller;
   
   import org.apache.log4j.Logger;
   import org.kuali.ole.OLEConstants;
   import org.kuali.ole.loan.LoanProcessor;
   import org.kuali.ole.loan.bo.OleLoanDocument;
   import org.kuali.ole.loan.form.OleLoanForm;
   import org.kuali.rice.krad.service.BusinessObjectService;
   import org.kuali.rice.krad.web.controller.UifControllerBase;
  import org.kuali.rice.krad.web.form.UifFormBase;
  import org.springframework.stereotype.Controller;
  import org.springframework.validation.BindingResult;
  import org.springframework.web.bind.annotation.ModelAttribute;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.servlet.ModelAndView;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.sql.Timestamp;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.Comparator;
  import java.util.List;
  
  /**
   * The LoanController is the controller class for processing all the actions that corresponds to the Loan functionality in OLE.
   * The request mapping tag takes care of mapping the individual action to the corresponding functions.
   */
  @Controller
  @RequestMapping(value = "/loancontroller")
  public class LoanController extends UifControllerBase {
  
      private static final Logger LOG = Logger.getLogger(LoanController.class);
  
      private BusinessObjectService boService;
  
      /**
       *  This method creates new OleLoan form
       * @param request
       * @return  OleLoanForm
       */
      @Override
      protected OleLoanForm createInitialForm(HttpServletRequest request) {
          return new OleLoanForm();
      }
  
      /**
       *  This method converts UifFormBase to OleLoanForm
       * @param form
       * @param result
       * @param request
       * @param response
       * @return ModelAndView
       */
      @Override
      @RequestMapping(params = "methodToCall=start")
      public ModelAndView start(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                HttpServletRequest request, HttpServletResponse response) {
          OleLoanForm oleLoanForm = (OleLoanForm) form;
          return super.start(oleLoanForm, result, request, response);
      }
  
      /**
       *   This method displays information about a patron in UI.
       * @param form
       * @param result
       * @param request
       * @param response
       * @return ModelAndView
       */
      @RequestMapping(params = "methodToCall=searchPatron")
      public ModelAndView searchPatron(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                             HttpServletRequest request, HttpServletResponse response) {
          OleLoanForm oleLoanForm = (OleLoanForm) form;
          try{
          OleLoanDocument oleLoanDocument = getLoanProcessor().getLoanDocument(oleLoanForm.getPatronBarcode());
          oleLoanForm.setBorrowerType(oleLoanDocument.getBorrowerTypeName());
          oleLoanForm.setPatronName(oleLoanDocument.getPatronName());
          oleLoanForm.setPatronId(oleLoanDocument.getPatronId());
          oleLoanForm.setBorrowerTypeId(oleLoanDocument.getBorrowerTypeId());
          oleLoanForm.setInformation("");
          oleLoanForm.setDummyLoan(oleLoanDocument);
              if(oleLoanDocument.getErrorMessage()!=null){
                  oleLoanForm.setSuccess(false);
                  oleLoanForm.setInformation("");
                  oleLoanForm.setMessage(oleLoanDocument.getErrorMessage());
                  oleLoanForm.setPatronName(null);
              }
          }catch (Exception e){
              oleLoanForm.setInformation(e.getMessage());
          }
          return getUIFModelAndView(oleLoanForm, "PatronItemViewPage");
      }
  
      /**
       * This method creates new loan for a patron..
       * @param form
       * @param result
       * @param request
      * @param response
      * @return ModelAndView
      */
     @RequestMapping(params = "methodToCall=addItem")
     public ModelAndView addItem(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                 HttpServletRequest request, HttpServletResponse response) {
          OleLoanForm oleLoanForm = (OleLoanForm) form;
         try{
          List<OleLoanDocument> existingItemList = new ArrayList<OleLoanDocument>();
 
          OleLoanDocument oleLoanDocument = new OleLoanDocument();
          oleLoanDocument.setPatronId(oleLoanForm.getPatronId());
          oleLoanDocument.setBorrowerTypeId(oleLoanForm.getBorrowerTypeId());
          oleLoanDocument.setBorrowerTypeName(oleLoanForm.getBorrowerType());
          oleLoanDocument = getLoanProcessor().addLoan(oleLoanForm.getPatronBarcode(),oleLoanForm.getItem(),oleLoanDocument);
          oleLoanForm.setItemUuid(oleLoanDocument.getItemUuid());
          oleLoanForm.setInstanceUuid(oleLoanDocument.getInstanceUuid());
          oleLoanForm.setOleItem(oleLoanDocument.getOleItem());
          oleLoanForm.setDueDateMap(oleLoanDocument.getLoanDueDate());
          oleLoanForm.setMessage(oleLoanDocument.getErrorMessage());
          if(oleLoanForm.getPatronName()==null){
             oleLoanForm.setPatronName(oleLoanDocument.getPatronName());
          }
         if(oleLoanDocument.getErrorMessage() == null){
           existingItemList.add(oleLoanDocument);
           oleLoanForm.setItem("");
           oleLoanForm.setInformation("");
         } else {
             oleLoanForm.setDueDateEmpty(oleLoanDocument.isDueDateEmpty());
             oleLoanForm.setDummyLoan(oleLoanDocument);
             oleLoanForm.setSuccess(false);
             oleLoanForm.setInformation("");
         }
         if(oleLoanForm.getLoanList()!=null && !oleLoanForm.getLoanList().isEmpty()){
             existingItemList.addAll(oleLoanForm.getLoanList());
         }
         oleLoanForm.setLoanList(existingItemList);
         }catch (Exception e){
             oleLoanForm.setInformation(e.getMessage());
 
         }
        return getUIFModelAndView(oleLoanForm, "PatronItemViewPage");
     }
 
     /**
      * This method  creates loan for a patron who is not able to borrow.
      * @param form
      * @param result
      * @param request
      * @param response
      * @return  ModelAndView
      */
     @RequestMapping(params = "methodToCall=loan")
     public ModelAndView loanPatron(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                     HttpServletRequest request, HttpServletResponse response) {
         OleLoanForm oleLoanForm = (OleLoanForm) form;
         try{
         List<OleLoanDocument> existingItemList = new ArrayList<OleLoanDocument>();
         OleLoanDocument oleLoanDocument = oleLoanForm.getDummyLoan();
         if(oleLoanDocument!=null){
             if(oleLoanForm.getDueDateMap()!=null){
                 oleLoanDocument.setLoanDueDate(new java.sql.Timestamp(oleLoanForm.getDueDateMap().getTime()));
                 getLoanProcessor().saveLoan(oleLoanDocument);
                 existingItemList.add(oleLoanDocument);
                 if(oleLoanForm.getLoanList()!=null && !oleLoanForm.getLoanList().isEmpty()){
                     existingItemList.addAll(oleLoanForm.getLoanList());
                 }
                 oleLoanForm.setLoanList(existingItemList);
             }
             if(oleLoanForm.getPatronName()==null){
                 oleLoanForm.setPatronName(oleLoanDocument.getPatronName());
             }
             oleLoanForm.setSuccess(true);
             oleLoanForm.setMessage(null);
             oleLoanForm.setItem("");
             oleLoanForm.setInformation("");
         }
         }catch (Exception e){
             oleLoanForm.setInformation(e.getMessage());
         }
         return getUIFModelAndView(oleLoanForm, "PatronItemViewPage");
     }
 
     /**
      * This method doesn't allow a patron to be loaned.
      *  @param form
      * @param result
      * @param request
      * @param response
      * @return ModelAndView
      */
     @RequestMapping(params = "methodToCall=noLoan")
     public ModelAndView doNotLoanPatron(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                    HttpServletRequest request, HttpServletResponse response) {
         OleLoanForm oleLoanForm = (OleLoanForm) form;
         oleLoanForm.setItem("");
         oleLoanForm.setInformation("");
         oleLoanForm.setMessage(null);
         oleLoanForm.setSuccess(true);
         return getUIFModelAndView(oleLoanForm, "PatronItemViewPage");
     }
 
     /**
      *  This method clear UI for next borrower session..
      * @param form
      * @param result
      * @param request
      * @param response
      * @return  ModelAndView
      */
     @RequestMapping(params = "methodToCall=saveAndClear")
     public ModelAndView clearPatron(@ModelAttribute("KualiForm") UifFormBase form, BindingResult result,
                                      HttpServletRequest request, HttpServletResponse response) {
         OleLoanForm oleLoanForm = (OleLoanForm) form;
         oleLoanForm.setBorrowerType(null);
         oleLoanForm.setPatronBarcode(null);
         oleLoanForm.setPatronName(null);
         oleLoanForm.setLoanList(null);
         oleLoanForm.setMessage(null);
         oleLoanForm.setSuccess(true);
         return getUIFModelAndView(oleLoanForm, "PatronItemViewPage");
     }
 
     /**
      * This method initiate LoanProcessor.
      * @return LoanProcessor
      */
     private LoanProcessor getLoanProcessor() {
         return new LoanProcessor();
     }
 
 
 
 }