/* Licensed under the Apache 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.apache.org/licenses/LICENSE-2.0
 * 
 * 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.activiti.scripting.secure.behavior;

import org.activiti.bpmn.constants.BpmnXMLConstants;
import org.activiti.bpmn.model.ScriptTask;
import org.activiti.engine.impl.bpmn.parser.BpmnParse;
import org.activiti.engine.impl.bpmn.parser.handler.ScriptTaskParseHandler;
import org.activiti.engine.impl.pvm.process.ActivityImpl;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * @author Joram Barrez
 */
public class SecureJavascriptTaskParseHandler extends ScriptTaskParseHandler {
  
  private static final Logger logger = LoggerFactory.getLogger(SecureJavascriptTaskParseHandler.class);
  
  public static final String LANGUAGE_JAVASCRIPT = "javascript";
  
  @Override
  protected void executeParse(BpmnParse bpmnParse, ScriptTask scriptTask) {
    String language = scriptTask.getScriptFormat();
    if (LANGUAGE_JAVASCRIPT.equalsIgnoreCase(language)) {
      createSecureJavascriptTaskBehavior(bpmnParse, scriptTask, language);
    } else {
      super.executeParse(bpmnParse, scriptTask);
    }
  }

  private void createSecureJavascriptTaskBehavior(BpmnParse bpmnParse,
      ScriptTask scriptTask, String language) {
    if (StringUtils.isEmpty(scriptTask.getScript())) {
      logger.warn("No script provided for scriptTask " + scriptTask.getId());
    }
    ActivityImpl activity = createActivityOnCurrentScope(bpmnParse, scriptTask, BpmnXMLConstants.ELEMENT_TASK_SCRIPT);
    activity.setAsync(scriptTask.isAsynchronous());
    activity.setExclusive(!scriptTask.isNotExclusive());
    activity.setActivityBehavior(new SecureJavascriptTaskActivityBehavior(scriptTask.getId(), 
        scriptTask.getScript(), language, scriptTask.getResultVariable(), scriptTask.isAutoStoreVariables()));
  }

}