/**
    * This file Copyright (c) 2003-2012 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.module.workflow.pages;
  
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.core.HierarchyManager;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.module.admininterface.TemplatedMVCHandler;
  import info.magnolia.module.workflow.WorkflowConstants;
  import info.magnolia.module.workflow.WorkflowModule;
  import info.magnolia.module.workflow.WorkflowUtil;
  import info.magnolia.module.workflow.flows.FlowDefinitionException;
  import info.magnolia.module.workflow.flows.FlowDefinitionManager;
  import info.magnolia.repository.RepositoryConstants;
  
  import java.sql.Date;
  import java.sql.Timestamp;
  import java.util.Calendar;
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.lang.StringEscapeUtils;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * A {@link TemplatedMVCHandler} providing utility/test functions for workflows.
   */
  public class WorkflowUtilPage extends TemplatedMVCHandler {
  
      private static final long serialVersionUID = 222L;
  
      private static final Logger log = LoggerFactory.getLogger(WorkflowUtilPage.class);
  
      protected FlowDefinitionManager fdm = WorkflowModule.getFlowDefinitionManager();
  
      public WorkflowUtilPage(String name, HttpServletRequest request, HttpServletResponse response) {
          super(name, request, response);
      }
  
      public String getCurrentTimeStamp() {
          return new Timestamp(System.currentTimeMillis()).toString();
      }
  
      private String flowName;
  
      private String query;
  
      private String path;
  
      private String startDate;
  
      private String stopDate;
  
      private String result;
  
      private String repository;
  
      private String flow = "<!-- the name of the definition will get used as the upload name-->";
  
      public String getFlow() {
          return this.flow;
      }
  
     public void setFlow(String flow) {
         this.flow = flow;
     }
 
     public String getFlowName() {
         return this.flowName;
     }
 
     public void setFlowName(String flowName) {
         this.flowName = StringEscapeUtils.escapeHtml(flowName); //escape to prevent XSS attack
     }
 
     @Override
     public void setCommand(String command) {
         super.setCommand(StringEscapeUtils.escapeHtml(command)); //escape to prevent XSS attack
     }
 
     public String getPath() {
         return this.path;
     }
 
     public void setPath(String path) {
         this.path = path;
     }
 
     public String getQuery() {
         return this.query;
     }
 
     public void setQuery(String query) {
         this.query = query;
     }
 
     public String getRepository() {
         return this.repository;
     }
 
     public void setRepository(String repository) {
         this.repository = repository;
     }
 
     public String getStartDate() {
         return this.startDate;
     }
 
     public void setStartDate(String startDate) {
         this.startDate = startDate;
     }
 
     public String getStopDate() {
         return this.stopDate;
     }
 
     public void setStopDate(String stopDate) {
         this.stopDate = stopDate;
     }
 
     public String getResult() {
         return this.result;
     }
 
     public List getFlowList() throws FlowDefinitionException {
         return fdm.getDefinitionNames();
     }
 
     public String showFlow() throws FlowDefinitionException {
         String flow;
         flow = fdm.readDefinition(flowName);
 
         // get flow by name
         if (StringUtils.isEmpty(flow)) {
             log.error("can not find flow definition for {}", flowName);
             result = "can not find flow definition for " + flowName;
         }
         setFlow(flow);
         return VIEW_SHOW;
     }
 
     public String doQuery() throws Exception {
         if (query != null && query.length() > 0) {
             result = WorkflowUtil.getWorkItemStore().doQuery(query).toString();
         }
         return VIEW_SHOW;
     }
 
     public String updateDate() throws Exception {
         result = setDate(path, startDate, stopDate);
         return VIEW_SHOW;
     }
 
     public String launchFlow() throws Exception {
 
         WorkflowUtil.launchFlow(repository, path, flowName);
 
         return VIEW_SHOW;
     }
 
     public String upload() throws Exception {
 
         if (flow == null) {
             return null;
         }
         flow = flow.trim();
 
         fdm.saveDefinition(flow);
 
         result = "Workflow was uploaded successfully.";
         return VIEW_SHOW;
     }
 
     private String setDate(String pathSelected, String start, String stop) throws Exception {
         // add start date and end date
         HierarchyManager hm = MgnlContext.getSystemContext().getHierarchyManager(RepositoryConstants.WEBSITE);
         Content ct;
         try {
             ct = hm.getContent(pathSelected);
             Calendar start_c = Calendar.getInstance();
             Calendar stop_c = Calendar.getInstance();
             start_c.setTime(new Date(Timestamp.valueOf(start).getTime()));
             ct.getNodeData(WorkflowConstants.ATTRIBUTE_START_DATE).setValue(start_c);
             stop_c.setTime(new Date(Timestamp.valueOf(stop).getTime()));
             ct.getNodeData(WorkflowConstants.ATTRIBUTE_END_DATE).setValue(stop_c);
             hm.save();
             return "set date ok. path " + pathSelected + ", start date " + start + ", stop date " + stop;
         }
         catch (Exception e) {
             log.error("can not get content node for path " + pathSelected, e);
         }
         return "set date failed";
     }
 
 }