prod/net/jaekl/frank/ViewSchedule.java

   1 package net.jaekl.frank;
   2
   3 import java.io.FileInputStream;
   4 import java.io.IOException;
   5 import java.io.PrintWriter;
   6 import java.util.Locale;
   7
   8 import javax.servlet.ServletException;
   9 import javax.servlet.http.HttpServlet;
  10 import javax.servlet.http.HttpServletRequest;
  11 import javax.servlet.http.HttpServletResponse;
  12
  13 import net.jaekl.frank.octranspo.Server;
  14 import net.jaekl.frank.octranspo.StopInfo;
  15 import net.jaekl.qd.util.ExceptionUtils;
  16
  17 public class ViewSchedule extends HttpServlet {
  18         private static final long serialVersionUID = 1L;
  19
  20         static final String BUNDLE_NAME = "frank";
  21         static final String STOP = "stop";
  22         static final String ROUTE = "route";
  23         static final String LANG = "lang";
  24
  25         ErrorHandler m_errorHandler;
  26
  27         public ViewSchedule() {
  28                 m_errorHandler = new ErrorHandler();
  29         }
  30
  31         int getParamInt(HttpServletRequest req, String paramName) {
  32                 String valueStr = getParamString(req, paramName);
  33                 try {
  34                         return Integer.parseInt(valueStr);
  35                 }
  36                 catch (NumberFormatException exc) {
  37                         // TODO:  Error page
  38                         return 0;
  39                 }
  40         }
  41
  42         String getParamString(HttpServletRequest req, String paramName) {
  43                 String valueStr = req.getParameter(paramName);
  44                 if (null == valueStr|| valueStr.equals("")) {
  45                         // TODO:  Error page
  46                         return null;
  47                 }
  48                 return valueStr;
  49         }
  50
  51         Locale getLocale(HttpServletRequest req) {
  52                 Locale result = null;
  53                 String lang = getParamString(req, LANG);
  54                 if (null != lang) {
  55                         result = new Locale(lang);
  56                 }
  57                 if (null == result) {
  58                         result = Locale.getDefault();
  59                 }
  60                 return result;
  61         }
  62
  63         @Override
  64         public void doGet(HttpServletRequest req, HttpServletResponse res)
  65         throws ServletException, IOException
  66         {
  67                 res.setContentType("text/html");
  68                 PrintWriter pw = res.getWriter();
  69
  70                 Locale locale = getLocale(req);
  71                 int stop = getParamInt(req, STOP);
  72                 int route = getParamInt(req, ROUTE);
  73
  74                 try {
  75                         FileInputStream fis = new FileInputStream("apikey.txt");
  76                         try {
  77                                 Server server = new Server("192f31d2", fis);
  78                                 StopInfo stopInfo = null;
  79
  80                                 if (0 == route) {
  81                                         stopInfo = server.getNextTripsForStopAllRoutes(stop);
  82                                 }
  83                                 else {
  84                                         stopInfo = server.getNextTripsForStop(stop, route);
  85                                 }
  86                                 Schedule schedule = new Schedule(locale);
  87
  88                                 schedule.writePage(pw, stopInfo);
  89                         }
  90                         finally {
  91                                 ExceptionUtils.tryClose(fis);
  92                         }
  93                 }
  94                 catch (Throwable t) {
  95                         m_errorHandler.writeErrorPage(pw, t, locale);
  96                 }
  97         }
  98 }