/**
    * Copyright 2005-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
    *
   * 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.kuali.rice.krad.uif.lifecycle;
  
  import javax.servlet.http.HttpServletRequest;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.krad.uif.UifConstants;
  import org.kuali.rice.krad.uif.UifParameters;
  import org.kuali.rice.krad.uif.view.View;
  import org.kuali.rice.krad.util.KRADConstants;
  import org.kuali.rice.krad.web.controller.UifControllerBase;
  import org.kuali.rice.krad.web.form.UifFormBase;
  import org.springframework.web.servlet.support.RequestContextUtils;
  
  /**
   * Lifecycle processing task for encapsulating a view refresh. 
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   * @see ViewLifecycle#encapsulateLifecycle(View, Object, HttpServletRequest, javax.servlet.http.HttpServletResponse, Runnable)
   * @see UifControllerBase#refresh(UifFormBase, org.springframework.validation.BindingResult, HttpServletRequest, javax.servlet.http.HttpServletResponse)
   */
  public class ViewLifecycleRefreshBuild implements Runnable {
  
      @Override
      public void run() {
          View view = ViewLifecycle.getView();
          UifFormBase form = (UifFormBase) ViewLifecycle.getModel();
          HttpServletRequest request = ViewLifecycle.getRequest();
          
          String flashMapSelectedLineValues = "";
          if (RequestContextUtils.getInputFlashMap(request) != null) {
              flashMapSelectedLineValues = (String) RequestContextUtils.getInputFlashMap(request).get(
                      UifParameters.SELECTED_LINE_VALUES);
          }
  
          String refreshCallerType = "";
          if (request.getParameterMap().containsKey(KRADConstants.REFRESH_CALLER_TYPE)) {
              refreshCallerType = request.getParameter(KRADConstants.REFRESH_CALLER_TYPE);
          }
  
          // process multi-value lookup returns
          if (StringUtils.equals(refreshCallerType, UifConstants.RefreshCallerTypes.MULTI_VALUE_LOOKUP)) {
              String lookupCollectionName = "";
              if (request.getParameterMap().containsKey(UifParameters.LOOKUP_COLLECTION_NAME)) {
                  lookupCollectionName = request.getParameter(UifParameters.LOOKUP_COLLECTION_NAME);
              }
  
              String lookupCollectionId = "";
              if (request.getParameterMap().containsKey(UifParameters.LOOKUP_COLLECTION_ID)) {
                  lookupCollectionId = request.getParameter(UifParameters.LOOKUP_COLLECTION_ID);
              }
  
              if (StringUtils.isBlank(lookupCollectionName)) {
                  throw new RuntimeException(
                          "Lookup collection name is required for processing multi-value lookup results");
              }
  
              String multiValueReturnFields ="";
              if (request.getParameterMap().containsKey(UifParameters.MULIT_VALUE_RETURN_FILEDS)) {
                  multiValueReturnFields = request.getParameter(UifParameters.MULIT_VALUE_RETURN_FILEDS);
              }
  
              String selectedLineValues = "";
              if (request.getParameterMap().containsKey(UifParameters.SELECTED_LINE_VALUES)) {
                  selectedLineValues = request.getParameter(UifParameters.SELECTED_LINE_VALUES);
              }
              if (!StringUtils.isBlank(flashMapSelectedLineValues)) {
                  selectedLineValues = flashMapSelectedLineValues;
              }
  
              // invoked view helper to populate the collection from lookup results
              ViewLifecycle.getHelper().processMultipleValueLookupResults(form, lookupCollectionId,
                      lookupCollectionName, multiValueReturnFields, selectedLineValues);
          }
  
          // refresh references
          if (request.getParameterMap().containsKey(KRADConstants.REFERENCES_TO_REFRESH)) {
              String referencesToRefresh = request.getParameter(KRADConstants.REFERENCES_TO_REFRESH);
  
              ViewLifecycle.getHelper().refreshReferences(referencesToRefresh);
          }
  
          // set focus and jump position for returning from a quickfinder
          if (request.getParameterMap().containsKey(UifParameters.QUICKFINDER_ID)) {
              String quickfinderId = request.getParameter(UifParameters.QUICKFINDER_ID);
 
             String focusId = (String) form.getViewPostMetadata().getComponentPostData(quickfinderId,
                                 UifConstants.PostMetadata.QUICKFINDER_FOCUS_ID);
             if (StringUtils.isNotBlank(focusId)) {
                 form.setFocusId(focusId);
             }
 
             String jumpToId = (String) form.getViewPostMetadata().getComponentPostData(quickfinderId,
                                 UifConstants.PostMetadata.QUICKFINDER_JUMP_TO_ID);
             if (StringUtils.isNotBlank(jumpToId)) {
                 form.setJumpToId(jumpToId);
             }
         }
 
     }
 }