/**
    * Copyright 2005-2012 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 edu.sampleu.travel.workflow;
  
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.uif.RemotableAttributeErrorContract;
  import org.kuali.rice.core.api.uif.RemotableAttributeError;
  import org.kuali.rice.kew.rule.GenericWorkflowAttribute;
  import org.kuali.rice.kns.web.ui.Field;
  import org.kuali.rice.kns.web.ui.Row;
  
  public class DestinationRuleAttribute extends GenericWorkflowAttribute {
  
  	private static final String DEST_LABEL = "Destination";
  	private static final String DEST_FIELD_KEY = "destination";
  
      private final List<Row> rows = new ArrayList<Row>();
  
  	private String destination;
  
      public DestinationRuleAttribute() {
          super("destination");
      }
  
      public DestinationRuleAttribute(String destination) {
          super("destination");
          this.destination = destination;
      }
  
      /*
  	public boolean isMatch(DocumentContent docContent, List<RuleExtension> ruleExtensions) {
  		try {
  			boolean foundDestRule = false;
  			for (Iterator extensionsIterator = ruleExtensions.iterator(); extensionsIterator.hasNext();) {
  	            RuleExtension extension = (RuleExtension) extensionsIterator.next();
  	            if (extension.getRuleTemplateAttribute().getRuleAttribute().getClassName().equals(getClass().getName())) {
  	                for (Iterator valuesIterator = extension.getExtensionValues().iterator(); valuesIterator.hasNext();) {
  	                    RuleExtensionValue extensionValue = (RuleExtensionValue) valuesIterator.next();
  	                    String key = extensionValue.getKey();
  	                    String value = extensionValue.getValue();
  	                    if (key.equals(DEST_FIELD_KEY)) {
  	                    	destination = value;
  	                    	foundDestRule = true;
  	                    }
  	                }
  	            }
  	        }
  			if (! foundDestRule) {
  				return false;
  			}
  
  			Element element = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(
  					new InputSource(new BufferedReader(new StringReader(docContent.getDocContent())))).getDocumentElement();
  			XPath xpath = XPathFactory.newInstance().newXPath();
  			String docContentDest = xpath.evaluate("//destination", element);
  			return destination.equals(docContentDest);
  		} catch (Exception e) {
  			throw new RuntimeException(e);
  		}
  	}*/
  
  	public List<Row> getRuleRows() {
  		return getRows();
  	}
  
  	public List<Row> getRoutingDataRows() {
  		return getRows();
  	}
  
      private List<Row> getRows() {
          log.info("Returning rows: " + rows);
          List<Field> fields = new ArrayList<Field>();
          fields.add(new Field(DEST_LABEL, "", Field.TEXT, false, DEST_FIELD_KEY, "", false, false, null, null));
          List<Row> rows = new ArrayList<Row>();
          rows.add(new Row(fields));
          return rows;
      }
  
      /* setter for edoclite field */
      public void setDestination(String destination) {
          this.destination = destination;
     }
 
     public Map<String, String> getProperties() {
         Map<String, String> props = new HashMap<String, String>();
         props.put("destination", destination);
         return props;
     }
 
 	public List<RemotableAttributeError> validateRoutingData(Map paramMap) {
 		return validateInputMap(paramMap);
 	}
 
 	public List<RemotableAttributeError> validateRuleData(Map paramMap) {
 		return validateInputMap(paramMap);
 	}
 
     private List<RemotableAttributeError> validateInputMap(Map paramMap) {
     	List errors = new ArrayList();
     	this.destination = (String) paramMap.get(DEST_FIELD_KEY);
     	if (StringUtils.isBlank(destination)  && required) {
     		errors.add(RemotableAttributeError.Builder.create(DEST_FIELD_KEY, "Destination is required.").build());
     	}
     	return errors;
     }
 }