/**
    * Copyright 2005-2011 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.core.web.parameter;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.kuali.rice.core.framework.parameter.ParameterService;
  import org.kuali.rice.core.impl.component.ComponentBo;
  import org.kuali.rice.core.impl.component.DerivedComponentBo;
  import org.kuali.rice.core.impl.parameter.ParameterBo;
  import org.kuali.rice.kim.api.KimConstants;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.kns.lookup.KualiLookupableHelperServiceImpl;
  import org.kuali.rice.krad.bo.BusinessObject;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADConstants;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * This is a description of what this class does - kellerj don't forget to fill this in.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class ParameterLookupableHelperServiceImpl extends KualiLookupableHelperServiceImpl {
  
      private static final long serialVersionUID = 4381873774407301041L;
  
      private static final Log LOG = LogFactory.getLog(ParameterLookupableHelperServiceImpl.class);
      private static final String COMPONENT_NAME = "component.name";
      private static final String DERIVED_COMPONENT_NAME = "derivedComponent.name";
      private static final String NAMESPACE_CODE = "namespaceCode";
  
      @Override
      protected boolean allowsMaintenanceEditAction(BusinessObject businessObject) {
      	
          ParameterBo parm = (ParameterBo)businessObject;
          
          Map<String, String> permissionDetails = new HashMap<String, String>();
          permissionDetails.put(KimConstants.AttributeConstants.NAMESPACE_CODE, parm.getNamespaceCode());
          permissionDetails.put(KimConstants.AttributeConstants.COMPONENT_NAME, parm.getComponentCode());
          permissionDetails.put(KimConstants.AttributeConstants.PARAMETER_NAME, parm.getName());
          return KimApiServiceLocator.getPermissionService().isAuthorizedByTemplateName(
          		GlobalVariables.getUserSession().getPerson().getPrincipalId(),
  				KRADConstants.KRAD_NAMESPACE,
  				KimConstants.PermissionTemplateNames.MAINTAIN_SYSTEM_PARAMETER,
  				permissionDetails, Collections.<String, String>emptyMap());
      }
      
      @Override
      public List<? extends BusinessObject> getSearchResults(java.util.Map<String, String> fieldValues) {
  
          List<ParameterBo> parametersWithDerivedComponents = null;
  
          if (fieldValues.containsKey(COMPONENT_NAME) && StringUtils.isNotBlank(fieldValues.get(COMPONENT_NAME))) {
              // also search based on derived component name
              Map<String, String> derivedComponentFieldValues = new HashMap<String, String>(fieldValues);
              String componentName = derivedComponentFieldValues.remove(COMPONENT_NAME);
              derivedComponentFieldValues.put(DERIVED_COMPONENT_NAME, componentName);
              parametersWithDerivedComponents = (List<ParameterBo>)super.getSearchResultsUnbounded(derivedComponentFieldValues);
          }
  
          List<ParameterBo> results = (List<ParameterBo>)super.getSearchResultsUnbounded(fieldValues);
          if (parametersWithDerivedComponents != null) {
              results.addAll(parametersWithDerivedComponents);
          }
          normalizeParameterComponents(results);
          return results;
      }
  
  	private void normalizeParameterComponents(List<ParameterBo> parameters) {
  		// attach the derived components where needed
          for (ParameterBo parameterBo : parameters) {
              if (parameterBo.getComponent() == null) {
                  parameterBo.setComponent(DerivedComponentBo.toComponentBo(parameterBo.getDerivedComponent()));
              }
          }
  	}
  
  }