/**
    * 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.kuali.rice.core.api.CoreApiServiceLocator;
  import org.kuali.rice.core.api.component.Component;
  import org.kuali.rice.core.api.util.RiceKeyConstants;
  import org.kuali.rice.core.impl.component.ComponentBo;
  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.document.MaintenanceDocument;
  import org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase;
  import org.kuali.rice.krad.datadictionary.DataDictionaryException;
  import org.kuali.rice.krad.service.KRADServiceLocatorWeb;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADConstants;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  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 ParameterRule extends MaintenanceDocumentRuleBase {
  
  	/**
  	 * This overridden method ...
  	 *
  	 * @see org.kuali.rice.krad.rules.MaintenanceDocumentRuleBase#processCustomRouteDocumentBusinessRules(org.kuali.rice.krad.document.MaintenanceDocument)
  	 */
  	@Override
  	protected boolean processCustomRouteDocumentBusinessRules(MaintenanceDocument document) {
  		boolean result = super.processCustomRouteDocumentBusinessRules( document );
  
  		result &= checkAllowsMaintenanceEdit( document.getDocumentHeader().getWorkflowDocument()
  				.getInitiatorPrincipalId(), (ParameterBo)getNewBo() );
  
  		result &= checkComponent((ParameterBo) getNewBo());
  		
  		return result;
  	}
  
  	protected boolean checkAllowsMaintenanceEdit(String initiatorPrincipalId, ParameterBo newBO) {
  
  		 boolean allowsEdit = false;
  	        ParameterBo parm = newBO;
  	        
  	        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());
  	        allowsEdit = KimApiServiceLocator.getPermissionService().isAuthorizedByTemplateName(
  	        				GlobalVariables.getUserSession().getPerson().getPrincipalId(),
  	        				KRADConstants.KRAD_NAMESPACE,
  	        				KimConstants.PermissionTemplateNames.MAINTAIN_SYSTEM_PARAMETER,
  	        				permissionDetails, Collections.<String, String>emptyMap());
  	        if(!allowsEdit){
  	        	putGlobalError(RiceKeyConstants.AUTHORIZATION_ERROR_PARAMETER);
  	        }
  	        return allowsEdit;
  	}
  
      public boolean checkComponent(ParameterBo param) {
          String componentCode = param.getComponentCode();
          String namespace = param.getNamespaceCode();
          boolean result = false;
          Component component = CoreApiServiceLocator.getComponentService().getComponentByCode(namespace, componentCode);
          if (component != null) {
              result = true;
          }
          if (!result) {
              putFieldError("code", "error.document.parameter.detailType.invalid", componentCode);
          }
          return result;
      }
  }