/**

  * Copyright 2010 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.osedu.org/licenses/ECL-2.0

  *

  * 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.student.lum.lu.ui.tools.client.configuration;

 import com.google.gwt.user.client.ui.Widget;

 import org.kuali.student.common.ui.client.application.Application;

 import org.kuali.student.common.ui.client.configurable.mvc.FieldDescriptor;

 import org.kuali.student.common.ui.client.configurable.mvc.sections.Section;

 import org.kuali.student.common.ui.client.configurable.mvc.views.SectionView;

 import org.kuali.student.common.ui.client.configurable.mvc.views.VerticalSectionView;

 import org.kuali.student.common.ui.client.mvc.Controller;

 import org.kuali.student.common.ui.client.mvc.DataModelDefinition;

 import org.kuali.student.common.ui.client.widgets.KSErrorDialog;

 import org.kuali.student.common.ui.client.widgets.field.layout.element.MessageKeyInfo;

 import org.kuali.student.core.assembly.data.Metadata;

 import org.kuali.student.core.assembly.data.QueryPath;

 import org.kuali.student.lum.lu.ui.tools.client.widgets.KSBrowser;

 public class CatalogBrowserConfigurer {

         public static final String CATALOG_BROWSER_MODEL = "CatalogBrowserModel";

         private DataModelDefinition modelDefinition;

         public enum Sections {

                 BROWSE_BY_SUBJECT_AREA,

                 BROWSE_BY_SCHOOL;

         }

         public void setModelDefinition (DataModelDefinition modelDefinition) {

                 this.modelDefinition = modelDefinition;

         }

         private Controller controller;

         public Controller getController ()

         {

                 return controller;

         }

         public void setController (Controller controller)

         {

                 this.controller = controller;

         }

         public void configureCatalogBrowser (CatalogBrowserController layout)

         {

                 //layout.setContentTitle("Browse Course Catalog");

                 layout.addStyleName("browseCatalog");

                 layout.setBasicTitle("Browse Course Catalog");

                 layout.addTab(createBrowseBySubjectAreaSection (), "Browse By Subject Area");

                 layout.addTab(createBrowseBySchoolSection (), "Browse By School");

                 layout.setDefaultView(Sections.BROWSE_BY_SUBJECT_AREA);

         }

         private SectionView createBrowseBySubjectAreaSection ()

         {

                 VerticalSectionView nestedSectionView =

                         new VerticalSectionView (Sections.BROWSE_BY_SUBJECT_AREA,

                                         "",

                                         CATALOG_BROWSER_MODEL);

                 String fieldKey = CatalogBrowserConstants.FULLY_QUALIFIED_BY_SUBJECT_AREA;

                 addField (nestedSectionView, fieldKey, null, configureKSBrowser (fieldKey));

                 return nestedSectionView;

         }

         private SectionView createBrowseBySchoolSection ()

         {

                 VerticalSectionView nestedSectionView =

                         new VerticalSectionView (Sections.BROWSE_BY_SCHOOL,

                                         "",

                                         CATALOG_BROWSER_MODEL);

                 String fieldKey =  CatalogBrowserConstants.FULLY_QUALIFIED_BY_SCHOOL_OR_COLLEGE;

                 addField (nestedSectionView, fieldKey, null, configureKSBrowser (fieldKey));

                 return nestedSectionView;

         }

  private String formatMetadata (Metadata md, String fieldKey) {

   String msg = "metadata for fieldKey=" + fieldKey

 //    + "\n Name=" + md.getName ()

     + "\n LabelKey=" + md.getLabelKey ()

     + "\n defaultValuePath=" + md.getDefaultValuePath ()

     + "\n LookupContextPath="  + md.getLookupContextPath ()

 //    + "\n maskForatter="  + md.getMaskFormatter ()

 //    + "\n partialMaskFormatter="  + md.getPartialMaskFormatter ()

     + "\n dataType="  + md.getDataType ()

     + "\n defaultValue="  + md.getDefaultValue ()

     + "\n WriteAccess="  + md.getWriteAccess ()

     + "\n initialLookup="  + md.getInitialLookup ()

     + "\n additionalLookups="  + md.getAdditionalLookups ()

     ;

   if (md.getProperties () != null) {

    msg += "\n It has " + md.getProperties ().size () + " properties: \n";

    for (String fk : md.getProperties ().keySet ()) {

     msg += "\n" + formatMetadata (md.getProperties ().get (fk), fk);

    }

   }

   return msg;

  }

         private KSBrowser configureKSBrowser (String fieldKey)

         {

                 QueryPath path = QueryPath.concat (null, fieldKey);

                 Metadata md = modelDefinition.getMetadata (path);

   if (md == null) {

                         KSErrorDialog.show (new NullPointerException

      ("Invalid lookup configuration: missing field in metadata."

      + formatMetadata (modelDefinition.getMetadata (), fieldKey)));

    return null;

   }

   if (md.getInitialLookup () == null) {

                         KSErrorDialog.show (new NullPointerException

      ("Invalid lookup configuration: missing initial lookup in metadata." 

      + formatMetadata (modelDefinition.getMetadata (), fieldKey)));

                         return null;

                 }

                 KSBrowser browser = new KSBrowser (md.getInitialLookup (), controller);

                 return browser;

         }

         private String getLabel (String labelKey)

         {

                 // TODO make the group, type and state configurable when framework is ready

                 // tried created a new message group clusetmanagement but the entries are not read for some reason

                 return Application.getApplicationContext ().getUILabel ("course", "course", "draft", labelKey);

         }

         protected FieldDescriptor addField(Section section, String fieldKey, MessageKeyInfo messageKey, Widget widget) {

                 return addField(section, fieldKey, messageKey, widget, null);

         }

         protected FieldDescriptor addField(Section section, String fieldKey, MessageKeyInfo messageKey, Widget widget, String parentPath) {

                 QueryPath path = QueryPath.concat(parentPath, fieldKey);

                 Metadata meta = modelDefinition.getMetadata(path);

                 FieldDescriptor fd = new FieldDescriptor(path.toString(), messageKey, meta);

                 if (widget != null) {

                         fd.setFieldWidget(widget);

                 }

                 section.addField(fd);

                 return fd;

         }

 }