/**
    * 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.kns.web.struts.form;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.encryption.EncryptionService;
  import org.kuali.rice.core.api.CoreApiServiceLocator;
  import org.kuali.rice.kns.service.BusinessObjectAuthorizationService;
  import org.kuali.rice.kns.service.KNSServiceLocator;
  import org.kuali.rice.krad.bo.BusinessObject;
  
  import javax.servlet.http.HttpServletRequest;
  import java.security.GeneralSecurityException;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  /**
   * This is a description of what this class does - wliang don't forget to fill this in. 
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class DisplayInactivationBlockersForm extends KualiForm {
      private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(DisplayInactivationBlockersForm.class);
  
  	private String businessObjectClassName;
  	private Map<String, String> primaryKeyFieldValues;
  	private Map<String, List<String>> blockingValues;
  	
  	@Override
  	public void populate(HttpServletRequest request) {
  		super.populate(request);
  		primaryKeyFieldValues = new HashMap<String, String>();
  
  		if (StringUtils.isBlank(businessObjectClassName)) {
  			throw new IllegalArgumentException("BO Class Name missing.");
  		}
  		
  		Class businessObjectClass = null;
  		try {
  			businessObjectClass = Class.forName(businessObjectClassName);
  		} catch (ClassNotFoundException e) {
  			LOG.error("Unable to find class: " + businessObjectClassName, e);
  			throw new IllegalArgumentException("Unable to find class: " + businessObjectClassName, e);
  		}
  		
  		if (!BusinessObject.class.isAssignableFrom(businessObjectClass)) {
  			LOG.error("BO Class is not a BusinessObject: " + businessObjectClassName);
  			throw new IllegalArgumentException("BO Class is not a BusinessObject: " + businessObjectClassName);
  		}
  		
  		EncryptionService encryptionService = CoreApiServiceLocator.getEncryptionService();
  		BusinessObjectAuthorizationService businessObjectAuthorizationService = KNSServiceLocator
                  .getBusinessObjectAuthorizationService();
  		
  		List primaryKeyFieldNames = KNSServiceLocator.getBusinessObjectMetaDataService().listPrimaryKeyFieldNames(businessObjectClass);
  		for (Iterator i = primaryKeyFieldNames.iterator(); i.hasNext();) {
  			String primaryKeyFieldName = (String) i.next();
  			
  			String primaryKeyFieldValue = request.getParameter(primaryKeyFieldName);
  			if (StringUtils.isBlank(primaryKeyFieldValue)) {
  				LOG.error("Missing primary key value for: " + primaryKeyFieldName);
  				throw new IllegalArgumentException("Missing primary key value for: " + primaryKeyFieldName);
  			}
  			
              // check if field is a secure
              if (businessObjectAuthorizationService.attributeValueNeedsToBeEncryptedOnFormsAndLinks(businessObjectClass, primaryKeyFieldName)) {
                  try {
                  	primaryKeyFieldValue = encryptionService.decrypt(primaryKeyFieldValue);
                  }
                  catch (GeneralSecurityException e) {
                      LOG.error("Unable to decrypt secure field for BO " + businessObjectClassName + " field " + primaryKeyFieldName, e);
                      throw new RuntimeException("Unable to decrypt secure field for BO " + businessObjectClassName + " field " + primaryKeyFieldName, e);
                  }
              }
              
  			primaryKeyFieldValues.put(primaryKeyFieldName, primaryKeyFieldValue);
  		}
  	}
  
  	public String getBusinessObjectClassName() {
  		return this.businessObjectClassName;
  	}
  
 	public void setBusinessObjectClassName(String businessObjectClassName) {
 		this.businessObjectClassName = businessObjectClassName;
 	}
 
 	public Map<String, String> getPrimaryKeyFieldValues() {
 		return this.primaryKeyFieldValues;
 	}
 
 	public void setPrimaryKeyFieldValues(Map<String, String> primaryKeyFieldValues) {
 		this.primaryKeyFieldValues = primaryKeyFieldValues;
 	}
 
 	public Map<String, List<String>> getBlockingValues() {
 		return this.blockingValues;
 	}
 
 	public void setBlockingValues(Map<String, List<String>> blockingValues) {
 		this.blockingValues = blockingValues;
 	}	
 }