/*
    * RemoveWorkflowScriptAction.java
    *
    * Created on 13. November 2005, 04:51
    */
   
   package org.itracker.web.actions.admin.workflow;
   
    
  import java.io.IOException;
  import java.lang.reflect.InvocationTargetException;
  import java.util.Map;
  import java.util.Set;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  
  import org.apache.commons.beanutils.PropertyUtils;
  import org.apache.log4j.Logger;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.apache.struts.action.ActionMessage;
  import org.apache.struts.action.ActionMessages;
  import org.itracker.model.PermissionType;
  import org.itracker.services.util.UserUtilities;
  import org.itracker.web.actions.base.ItrackerBaseAction;
  
  /**
   * Action to remove a workflow script
   *
   * <ol>
   *   <li>get all project and remove the script to be deleted</li>
   *   <li>delete the script</li>
   * </ol>
   *
   * @author mbae@bcwin.ch
   */
  public class RemoveWorkflowScriptAction extends ItrackerBaseAction {
  	private static final Logger log = Logger.getLogger(RemoveWorkflowScriptAction.class);
  	
      /**
       * executes the action which removes a workflow script 
       *
       * @param form the form with user input
       * @param request the request triggering the action
       * @param response response to the client
       * @param mapping The action mapping
       *
       * @throws ServletException thrown if execution fails
       * @throws IOException thrown if io to client fails
       *
       * @return the <code>ActionForward</code> to forward to
       */
  	public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          ActionMessages errors = new ActionMessages();
          ActionForward fw = mapping.findForward("error");
  
          
          // check permissions
          HttpSession session = request.getSession(true);
          Map<Integer, Set<PermissionType>> userPermissionsMap = getUserPermissions(session);
          if(! UserUtilities.hasPermission(userPermissionsMap, UserUtilities.PERMISSION_USER_ADMIN)) {
              return mapping.findForward("unauthorized");
          }
          try {
  
              // get the id from the form
              Integer scriptId = (Integer) PropertyUtils.getSimpleProperty(form, "id");
              
              // remove the script
              this.getITrackerServices().getConfigurationService()
                  .removeWorkflowScript(scriptId);
          
              // find the mapping for the list of all worksflows
              fw = mapping.findForward( "listworkflow" );
              
          } catch (InvocationTargetException ex) {
              log.error( ex.getMessage(), ex );
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidworkflowscript"));
          } catch (NoSuchMethodException ex) {
              log.error( ex.getMessage(), ex );
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidworkflowscript"));
          } catch (IllegalAccessException ex) {
              log.error( ex.getMessage(), ex );
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidworkflowscript"));
          }
          
          if(! errors.isEmpty()) {
          	saveErrors(request, errors);
          }
          return fw;
       }
  }