package org.rundeck.api.parser;
   
   import org.apache.commons.lang.StringUtils;
   import org.dom4j.Node;
   import org.rundeck.api.domain.*;
   
   import java.text.DateFormat;
   import java.text.ParseException;
   import java.text.SimpleDateFormat;
  import java.util.*;
  
  /**
   * $INTERFACE is ... User: greg Date: 1/16/14 Time: 5:44 PM
   */
  public class WorkflowStateParser extends BaseXpathParser<WorkflowState> {
  
  
      private static final ThreadLocal<DateFormat> w3cDateFormat = new ThreadLocal<DateFormat>() {
          protected DateFormat initialValue() {
              SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'", Locale.US);
              fmt.setTimeZone(TimeZone.getTimeZone("GMT"));
              return fmt;
          }
      };
  
      public WorkflowStateParser(final String xpath) {
          super(xpath);
      }
  
      public static Date parseDate(String s) {
          if (null == s) {
              return null;
          }
          try {
              Date parse = w3cDateFormat.get().parse(s);
              return parse;
          } catch (ParseException e) {
              return null;
          }
      }
  
      private static int integerValue(final String value, final int defValue) {
          int parseMax = defValue;
          try {
              parseMax = null != value ? Integer.parseInt(value) : defValue;
          } catch (NumberFormatException e) {
          }
          return parseMax;
      }
  
      @Override
      public WorkflowState parse(Node targetNode) {
          WorkflowState state = new WorkflowState();
          parseWorkflowState(targetNode, state);
  
  
          return state;
      }
  
      /**
       * Parse the workflow state components from the given dom node
       * @param targetNode
       * @param state
       */
      public static void parseWorkflowState(Node targetNode, WorkflowState state) {
          BaseStateParser.parseBaseState(targetNode, state);
  
          state.setStepCount(integerValue(StringUtils.trimToNull(targetNode.valueOf("stepCount")), 0));
  
          final List<RundeckNode> rundeckNodes =
                  new ListParser<RundeckNode>(new NodeParser(), "targetNodes/nodes/node").parseXmlNode(targetNode);
          state.setTargetNodes(new HashSet<RundeckNodeIdentity>(rundeckNodes));
  
          //steps
          state.setSteps(new ListParser<WorkflowStepState>(new WorkflowStepStateParser(),
                  "steps/step").parseXmlNode(targetNode));
      }
  
  }