001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.messageboards.action;
016    
017    import com.liferay.portal.kernel.dao.search.SearchContainer;
018    import com.liferay.portal.kernel.util.ContentTypes;
019    import com.liferay.portal.kernel.util.ParamUtil;
020    import com.liferay.portal.kernel.util.StringPool;
021    import com.liferay.portal.kernel.workflow.WorkflowConstants;
022    import com.liferay.portal.theme.ThemeDisplay;
023    import com.liferay.portal.util.PortalUtil;
024    import com.liferay.portal.util.WebKeys;
025    import com.liferay.portlet.messageboards.service.MBMessageServiceUtil;
026    import com.liferay.util.RSSUtil;
027    import com.liferay.util.servlet.ServletResponseUtil;
028    
029    import javax.servlet.http.HttpServletRequest;
030    import javax.servlet.http.HttpServletResponse;
031    
032    import org.apache.struts.action.Action;
033    import org.apache.struts.action.ActionForm;
034    import org.apache.struts.action.ActionForward;
035    import org.apache.struts.action.ActionMapping;
036    
037    /**
038     * @author Brian Wing Shun Chan
039     */
040    public class RSSAction extends Action {
041    
042            public ActionForward execute(
043                            ActionMapping mapping, ActionForm form, HttpServletRequest request,
044                            HttpServletResponse response)
045                    throws Exception {
046    
047                    try {
048                            ServletResponseUtil.sendFile(
049                                    request, response, null, getRSS(request),
050                                    ContentTypes.TEXT_XML_UTF8);
051    
052                            return null;
053                    }
054                    catch (Exception e) {
055                            PortalUtil.sendError(e, request, response);
056    
057                            return null;
058                    }
059            }
060    
061            protected byte[] getRSS(HttpServletRequest request) throws Exception {
062                    ThemeDisplay themeDisplay = (ThemeDisplay)request.getAttribute(
063                            WebKeys.THEME_DISPLAY);
064    
065                    String plid = ParamUtil.getString(request, "p_l_id");
066                    long companyId = ParamUtil.getLong(request, "companyId");
067                    long groupId = ParamUtil.getLong(request, "groupId");
068                    long userId = ParamUtil.getLong(request, "userId");
069                    long categoryId = ParamUtil.getLong(request, "mbCategoryId");
070                    long threadId = ParamUtil.getLong(request, "threadId");
071                    int max = ParamUtil.getInteger(
072                            request, "max", SearchContainer.DEFAULT_DELTA);
073                    String type = ParamUtil.getString(
074                            request, "type", RSSUtil.DEFAULT_TYPE);
075                    double version = ParamUtil.getDouble(
076                            request, "version", RSSUtil.DEFAULT_VERSION);
077                    String displayStyle = ParamUtil.getString(
078                            request, "displayStyle", RSSUtil.DISPLAY_STYLE_FULL_CONTENT);
079    
080                    String entryURL =
081                            themeDisplay.getPortalURL() + themeDisplay.getPathMain() +
082                                    "/message_boards/find_message?p_l_id=" + plid;
083    
084                    String rss = StringPool.BLANK;
085    
086                    if (companyId > 0) {
087                            String feedURL = StringPool.BLANK;
088    
089                            rss = MBMessageServiceUtil.getCompanyMessagesRSS(
090                                    companyId, WorkflowConstants.STATUS_APPROVED, max, type,
091                                    version, displayStyle, feedURL, entryURL, themeDisplay);
092                    }
093                    else if (groupId > 0) {
094                            String feedURL =
095                                    themeDisplay.getPortalURL() + themeDisplay.getPathMain() +
096                                            "/message_boards/find_recent_posts?p_l_id=" + plid;
097    
098                            if (userId > 0) {
099                                    rss = MBMessageServiceUtil.getGroupMessagesRSS(
100                                            groupId, userId, WorkflowConstants.STATUS_APPROVED, max,
101                                            type, version, displayStyle, feedURL, entryURL,
102                                            themeDisplay);
103                            }
104                            else {
105                                    rss = MBMessageServiceUtil.getGroupMessagesRSS(
106                                            groupId, WorkflowConstants.STATUS_APPROVED, max, type,
107                                            version, displayStyle, feedURL, entryURL, themeDisplay);
108                            }
109                    }
110                    else if (categoryId > 0) {
111                            String feedURL =
112                                    themeDisplay.getPortalURL() + themeDisplay.getPathMain() +
113                                            "/message_boards/find_category?p_l_id=" + plid +
114                                                    "&mbCategoryId=" + categoryId;
115    
116                            rss = MBMessageServiceUtil.getCategoryMessagesRSS(
117                                    groupId, categoryId, WorkflowConstants.STATUS_APPROVED, max,
118                                    type, version, displayStyle, feedURL, entryURL, themeDisplay);
119                    }
120                    else if (threadId > 0) {
121                            String feedURL =
122                                    themeDisplay.getPortalURL() + themeDisplay.getPathMain() +
123                                            "/message_boards/find_thread?p_l_id=" + plid +
124                                                    "&threadId=" + threadId;
125    
126                            rss = MBMessageServiceUtil.getThreadMessagesRSS(
127                                    threadId, WorkflowConstants.STATUS_APPROVED, max, type, version,
128                                    displayStyle, feedURL, entryURL, themeDisplay);
129                    }
130    
131                    return rss.getBytes(StringPool.UTF8);
132            }
133    
134    }