/*
    * 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.actions.admin.language;
  
  import java.io.IOException;
  import java.lang.reflect.InvocationTargetException;
  import java.util.List;
  
  import javax.servlet.ServletException;
  import javax.servlet.ServletOutputStream;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  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.core.resources.ITrackerResources;
  import org.itracker.model.NameValuePair;
  import org.itracker.services.ConfigurationService;
  import org.itracker.services.util.HTMLUtilities;
  import org.itracker.services.util.UserUtilities;
  import org.itracker.web.actions.base.ItrackerBaseAction;
  
  
  
  public class ExportLanguageAction extends ItrackerBaseAction {
  	private static final Logger log = Logger.getLogger(ExportLanguageAction.class);
  
      public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
      	ActionMessages errors = new ActionMessages();
  
  
          if(! hasPermission(UserUtilities.PERMISSION_USER_ADMIN, request, response)) {
              return mapping.findForward("unauthorized");
          }
  
          try {
              ConfigurationService configurationService = getITrackerServices().getConfigurationService();
  
              String locale = (String) PropertyUtils.getSimpleProperty(form, "locale");
              if(locale != null && ! locale.equals("")) {
                  StringBuffer output = new StringBuffer("# ITracker language properties file for locale " + locale + "\n\n");
  
                  List<NameValuePair> items = configurationService.getDefinedKeysAsArray(locale);
                  for(int i = 0; i < items.size(); i++) {
                      if(items.get(i).getName() != null && items.get(i).getValue() != null) {
                          output.append(ITrackerResources.escapeUnicodeString(items.get(i).getName(), false) + "=" + ITrackerResources.escapeUnicodeString(HTMLUtilities.escapeNewlines(items.get(i).getValue()), false) + "\n");
                      }
                  }
                  response.setHeader("Content-Disposition", "attachment; filename=\"ITracker" + (locale.equals(ITrackerResources.BASE_LOCALE) ? "" : "_" + locale) + ".properties\"");
                  response.setHeader("Content-Type", "application/x-itracker-language-export; charset=UTF-8");
                  ServletOutputStream out = response.getOutputStream();
                  out.println(output.toString());
                  out.flush();
                  return null;
              }
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidlocale"));
          } catch(RuntimeException e) {
              log.error("Exception while exporting language.", e);
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
          } catch (IllegalAccessException e) {
              log.error("Exception while exporting language.", e);
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
  		} catch (InvocationTargetException e) {
              log.error("Exception while exporting language.", e);
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
  		} catch (NoSuchMethodException e) {
              log.error("Exception while exporting language.", e);
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
  		}
  
          if(! errors.isEmpty()) {
              saveErrors(request, errors);
          }
  
          return mapping.findForward("error");
      }
  
  }