/*
    * 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.report;
  
  import org.apache.log4j.Logger;
  import org.apache.struts.action.*;
  import org.itracker.model.Report;
  import org.itracker.model.util.UserUtilities;
  import org.itracker.services.ReportService;
  import org.itracker.web.actions.base.ItrackerBaseAction;
  import org.itracker.web.util.LoginUtilities;
  import org.itracker.web.util.ServletContextUtils;
  
  import javax.servlet.ServletException;
  import javax.servlet.ServletOutputStream;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.IOException;
  
  
  public class DownloadReportAction extends ItrackerBaseAction {
      private static final Logger log = Logger.getLogger(DownloadReportAction.class);
  
      public DownloadReportAction() {
      }
  
      public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
          ActionMessages errors = new ActionMessages();
  
          String pageTitleKey;
          String pageTitleArg = "";
  
          if (!LoginUtilities.hasPermission(UserUtilities.PERMISSION_USER_ADMIN, request, response)) {
              return mapping.findForward("unauthorized");
          }
  
          try {
              Integer reportId = new Integer((request.getParameter("id") == null ? "-1" : request.getParameter("id")));
              if (reportId == null || reportId.intValue() < 0) {
                  errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidreport"));
              } else {
                  ReportService reportService = ServletContextUtils.getItrackerServices().getReportService();
  
                  Report report = reportService.getReportDAO().findByPrimaryKey(reportId);
                  if (report != null) {
                      response.setContentType("application/x-itracker-report-export");
                      response.setHeader("Content-Disposition", "attachment; filename=\"ITracker_report_" + report.getId() + ".def\"");
                      ServletOutputStream out = response.getOutputStream();
                      log.debug("Attempting export for: " + report);
                      out.write(report.getFileData());
                      out.flush();
                      out.close();
                      return null;
                  }
                  log.debug("Unknown report " + reportId + " specified for export");
                  errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.invalidreport"));
              }
          } catch (Exception e) {
              pageTitleKey = "itracker.web.error.title";
              request.setAttribute("pageTitleKey", pageTitleKey);
              request.setAttribute("pageTitleArg", pageTitleArg);
              log.error("Exception while exporting a report.", e);
              errors.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("itracker.web.error.system"));
          }
          if (!errors.isEmpty()) {
              saveErrors(request, errors);
          }
  
          return mapping.findForward("error");
      }
  
  }