/*
    * This software was designed and created by Jason Carroll.
    * Copyright (c) 2002, 2003, 2004 Jason Carroll.
    * The author can be reached at jcarroll@cowsultants.com
    * ITracker website: http://www.cowsultants.com
    * ITracker forums: http://www.cowsultants.com/phpBB/index.php
    *
    * This program is free software; you can redistribute it and/or modify
    * it only under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   */
  
  package org.itracker.web.forms;
  
  import bsh.Parser;
  import groovy.lang.GroovyShell;
  import org.apache.struts.action.ActionErrors;
  import org.apache.struts.action.ActionMapping;
  import org.apache.struts.action.ActionMessage;
  import org.apache.struts.util.LabelValueBean;
  import org.apache.struts.validator.ValidatorForm;
  import org.itracker.core.resources.ITrackerResources;
  import org.itracker.model.WorkflowScript;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import javax.servlet.http.HttpServletRequest;
  import java.io.StringReader;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  
  import static org.itracker.model.util.WorkflowUtilities.*;
  /**
   * This is the LoginForm Struts Form. It is used by Login form.
   *
   * @author ready
   */
  public class WorkflowScriptForm extends ValidatorForm {
      /**
       *
       */
      private static final Logger log = LoggerFactory.getLogger(WorkflowScriptForm.class);
      private static final long serialVersionUID = 1L;
      String action;
      Integer id;
      String name;
      Integer event;
      String script;
      String language;
  
      private List<LabelValueBean> eventOptions;
  
      public void initEventOptions(Locale locale) {
          if (null != eventOptions) {
              return;
          }
          eventOptions = new ArrayList<>(5);
          String[] eventTypes = new String[]{String.valueOf(EVENT_FIELD_ONPOPULATE),
                  String.valueOf(EVENT_FIELD_ONSETDEFAULT),
                  String.valueOf(EVENT_FIELD_ONVALIDATE),
                  String.valueOf(EVENT_FIELD_ONPRESUBMIT),
                  String.valueOf(EVENT_FIELD_ONPOSTSUBMIT),
          };
  
          for (String eventType : eventTypes) {
              eventOptions.add(new LabelValueBean(
                      ITrackerResources.getString(ITrackerResources.KEY_BASE_WORKFLOW_EVENT + eventType, locale),
                      eventType));
          }
  
      }
  
      public List<LabelValueBean> getEventOptions() {
          return eventOptions;
      }
  
  
      public void reset(ActionMapping mapping, HttpServletRequest request) {
          action = null;
          id = null;
          name = null;
          event = null;
          script = null;
      }
  
      public ActionErrors validate(ActionMapping mapping,
                                   HttpServletRequest request) {
          ActionErrors errors = super.validate(mapping, request);
  
          if (WorkflowScript.ScriptLanguage.Groovy != WorkflowScript.ScriptLanguage.valueOf(getLanguage())) {
              validateBeanShellScript(errors);
          } else {
             validateGroovyScript(errors);
         }
         return errors;
     }
 
     private void validateBeanShellScript(ActionErrors errors) {
         try {
             Parser parser = new Parser(new StringReader(getScript()));
             boolean eof;
             while (!(eof = parser.Line())) {
             }
         } catch (Exception e) {
             addScriptError(errors, e);
         }
     }
 
     private void validateGroovyScript(ActionErrors errors) {
         try {
             new GroovyShell().parse(getScript());
         } catch (Exception e) {
             addScriptError(errors, e);
         }
     }
 
     private void addScriptError(ActionErrors errors, Exception e) {
         errors.add("script", new ActionMessage("itracker.web.error.invalidscriptdata", e.getMessage()));
     }
 
     public String getAction() {
         return action;
     }
 
     public void setAction(String action) {
         this.action = action;
     }
 
     public Integer getEvent() {
         return event;
     }
 
     public void setEvent(Integer event) {
         this.event = event;
     }
 
     public Integer getId() {
         return id;
     }
 
     public void setId(Integer id) {
         this.id = id;
     }
 
     public String getName() {
         return name;
     }
 
     public void setName(String name) {
         this.name = name;
     }
 
     public String getScript() {
         return script;
     }
 
     public void setScript(String script) {
         this.script = script;
     }
 
     public String getLanguage() {
         return language;
     }
 
     public void setLanguage(String language) {
         this.language = language;
     }
 }