/*
*
* Copyright 2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.taglibs.rdc.sampleapps.musicstore.struts;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.taglibs.rdc.core.Grammar;
import org.apache.taglibs.rdc.sampleapps.musicstore.MusicStoreAppBean;
import org.apache.taglibs.rdc.sampleapps.musicstore.ProactiveHelp;
import org.apache.taglibs.rdc.sampleapps.musicstore.HTMLMenuLinks;
/**
* Struts action class for initializing session data before initial
* JSP [ mainmenu.jsp ] (music store sample app)
*
* @author Rahul Akolkar
* @author Jaroslav Gergic
* @author Thomas Ling
*/
public class MainMenuAction extends Action {
/**
* User Agent strings
*/
private static final String USERAGENT = "User-Agent";
private static final String MOZILLA = "Mozilla";
private static final String IBMVXML20 = "IBM VoiceXML 2.0";
public MainMenuAction() {
super();
}
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
HttpSession session = request.getSession();
MusicStoreAppBean msBean = (MusicStoreAppBean)
session.getAttribute(MusicStoreAppBean.SESSION_KEY);
if (msBean == null) {
String subscriptionId = session.getServletContext().
getInitParameter("com.amazon.ecs.subscriptionId");
msBean = new MusicStoreAppBean(subscriptionId);
session.setAttribute(MusicStoreAppBean.SESSION_KEY, msBean);
// Initialize channel information
String userAgent = request.getHeader(USERAGENT);
if (userAgent.indexOf(MOZILLA) >= 0) {
if (request.getParameter("VDEBUG") == null) {
msBean.setChannel(MusicStoreAppBean.GUI_APP);
} else {
// if VDEBUG is set, output voice page instead
msBean.setChannel(MusicStoreAppBean.VOICE_DBG);
}
} else {
msBean.setChannel(MusicStoreAppBean.VOICE_APP);
}
}
if (msBean.getChannel() == MusicStoreAppBean.GUI_APP) {
// GUI Channel
HTMLMenuLinks menuLinks = msBean.getMenuLinks();
if (menuLinks == null) {
String baseURI = "http://" + request.getServerName();
int port = request.getServerPort();
if (80 != port && 0 != port && 443 != port) {
baseURI += ":" + Integer.toString(port, 10);
}
baseURI += request.getContextPath();
menuLinks = new HTMLMenuLinks(baseURI);
msBean.setMenuLinks(menuLinks);
}
String genre = request.getParameter("genre");
if (genre == null) {
if (request.getParameter("browseMusic") == null) {
menuLinks.generateCategoryLinks(
HTMLMenuLinks.DEFAULT_GENRE, true);
} else {
menuLinks.generateGenreLinks();
}
} else {
menuLinks.generateCategoryLinks(genre, false);
}
} else {
// Voice Channel
ProactiveHelp ph = msBean.getProactiveHelp();
if(ph == null) {
ph = new ProactiveHelp();
ResourceBundle rb = ResourceBundle.
getBundle("org.apache.taglibs.rdc.sampleapps.musicstore.resources.MusicHints",
Locale.US);
ph.setHints(rb);
ph.setThreshold(60);
ph.setUsageWeighted(true);
msBean.setProactiveHelp(ph);
}
if (ph.strike()) {
request.setAttribute("proactiveHelp_hint", ph.nextHint());
}
//cleanup RDC history
session.removeAttribute("dialogMap");
//populate amazon menu template grammars
Grammar[] grammarList = new Grammar[] {
new Grammar("../../grammar/musicstore-app/genre_or_category.grxml",
Boolean.FALSE, Boolean.FALSE, "mainGrammar"),
new Grammar("../../grammar/musicstore-app/genre_or_category.grxml#category_only",
Boolean.FALSE, Boolean.FALSE, "categoryGrammar")
};
request.setAttribute("grammarList", grammarList);
}
return mapping.findForward("OK");
}
}