/* ===================================================================
    * Copyright 2002-05 SRI International.
    * Released under the MOZILLA PUBLIC LICENSE Version 1.1
    * which can be obtained at http://www.mozilla.org/MPL/MPL-1.1.html
    * This software is distributed on an "AS IS"
    * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
    * See the License for the specific language governing rights and
    * limitations under the License.
    * =================================================================== */
  package com.sri.emo.wizard.completion.management;
  
  import com.jcorporate.expresso.core.controller.*;
  import com.jcorporate.expresso.core.db.DBException;
  import com.jcorporate.expresso.core.dbobj.ValidValue;
  import com.sri.common.controller.StateHandler;
  import com.sri.emo.dbobj.Node;
  import com.sri.emo.dbobj.Part;
  import com.sri.emo.wizard.completion.model.CompletionBean;
  import com.sri.emo.wizard.completion.model.CompletionPartsBean;
  import com.sri.emo.wizard.completion.model.FieldCompletion;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Set;
  
  
  /***
   * @author Michael Rimov
   */
  public class PromptChooseParts implements StateHandler {
  
  
      /***
       * The name of this state as referred to by the Expresso Controller
       */
      public static final String STATE_NAME = "promptChooseParts";
  
      /***
       * The description of this state as referred to by the Expresso Controller.
       */
      public static final String STATE_DESCRIPTION = "Choose Parts For Wizard";
  
  
      /***
       * Parent controller backreference.
       */
      private final Controller parent;
  
      private CompletionBeanManager beanManager;
  
      /***
       * Constructor that takes the owner controller as a paramter.
       *
       * @param owner Controller the owning controller.
       */
      public PromptChooseParts(final Controller owner) {
          parent = owner;
          beanManager = new CompletionBeanManager();
      }
  
      /***
       * Called to handle the request.
       *
       * @param request  ControllerRequest The Function's ControllerRequest
       *                 object.
       * @param response ControllerResponse The Function's ControllerResponse
       *                 object.
       * @throws DBException         upon underlying database exception error.
       * @throws ControllerException upon underlying ControllerException error.
       */
      public void handleRequest(final ExpressoRequest request, final ExpressoResponse response) throws DBException,
              ControllerException {
  
          response.setTitle("Completion Wiz Creator, Part 2");
  
          List allValidValues = new ArrayList(2);
          allValidValues.add(new ValidValue(FieldCompletion.FIXED.toString(), "Fixed"));
          allValidValues.add(new ValidValue(FieldCompletion.WIZARD.toString(), "Wizard"));
  
          if (beanManager.handleSessionTimeout(request, response)) {
              return;
          }
  
          CompletionBean cb = beanManager.getActionForm(request);
          Set allParts = cb.getCompletionParts();
          Node node = new Node();
          node.setNodeId(cb.getTargetId().toString());
          node.retrieve();
  
          boolean includedDisabledRadios = false;
          assert allParts != null;
          for (Iterator i = allParts.iterator(); i.hasNext();) {
              CompletionPartsBean onePart = (CompletionPartsBean) i.next();
              Part thePart = onePart.getPart();
  
              Input oneInput = new Input();
              oneInput.setName(thePart.getPartNum());
              oneInput.setLabel(thePart.getPartLabel());
             oneInput.setValidValues(allValidValues);
 
             // if field completion is set, use it; otherwise, see if there is data in target object
             if (onePart.getFieldCompletion() == null) {
                 // see if there is data in target object
                 if (thePart.isOwnedAttribute() && node.getAttributes(thePart.getPartType()).length > 0) {
                     // have attributes
                     oneInput.setDefaultValue(FieldCompletion.FIXED.toString());
                 } else if (thePart.isSharedNodeAttrib() && node.getRelatedNodes(thePart.getNodeRelation(),
                         thePart.getPartType()).length > 0) {
                     // have relations
                     oneInput.setDefaultValue(FieldCompletion.FIXED.toString());
                 } else {
                     oneInput.setDefaultValue(FieldCompletion.WIZARD.toString());
                 }
             } else if (onePart.getFieldCompletion() == FieldCompletion.WIZARD) {
                 oneInput.setDefaultValue(FieldCompletion.WIZARD.toString());
             } else {
                 oneInput.setDefaultValue(FieldCompletion.FIXED.toString());
             }
 
             //Disable any non-related nodes without data.
             //
             if (thePart.isSharedNodeAttrib() && node.getRelatedNodes(thePart.getNodeRelation(),
                     thePart.getPartType()).length == 0) {
                 oneInput.setAttribute(Input.ATTRIBUTE_DISABLED, "true");
                 oneInput.setDefaultValue(FieldCompletion.FIXED.toString());
                 includedDisabledRadios = true;
             }
 
             response.add(oneInput);
 
         }
 
         //Create navigation transitions
         Transition back = new Transition(PromptChooseNode.STATE_NAME, parent);
         back.setName("back");
         back.setLabel("Back");
         response.add(back);
 
         Transition next = new Transition(DoChooseParts.STATE_NAME, parent);
         next.setName("next");
         next.setLabel("Next");
         response.add(next);
 
         // add msg explaining disabled radios
         if (includedDisabledRadios) {
             response.add(new Output("includedDisabledRadios", node.getNodeTitle()));
         }
     }
 }