postwebhandler.java

easy to use, easy to setup bulletin board (forum)

/*
 * Copyright (C) 2002 by MyVietnam.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * All copyright notices regarding mvnForum
 * must remain intact in the scripts and in the outputted HTML
 * The "powered by" text/logo with a link back to
 * http://www.mvnForum.com and http://www.MyVietnam.net in the footer of the pages MUST
 * remain visible when the pages are viewed on the internet or intranet.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * Support can be obtained from support forums at:
 * http://www.mvnForum.com/mvnforum/index
 *
 * Correspondence and Marketing Questions can be sent to:
 * [e-mail]
 *
 * @author: Minh Nguyen  [e-mail]
 * @author: Mai  Nguyen  [e-mail]
 */
package net.myvietnam.mvnplugin.mvnforum.user;

import javax.servlet.http.*;
import java.sql.*;
import java.util.Collection;
import java.util.Iterator;
import net.myvietnam.mvncore.exception.*;
import net.myvietnam.mvncore.util.ParamUtil;
import net.myvietnam.mvncore.util.DateUtil;
import net.myvietnam.mvncore.filter.DisableHtmlTagFilter;
import net.myvietnam.mvncore.filter.HtmlNewLineFilter;
import net.myvietnam.mvnplugin.mvnforum.db.PostBean;
import net.myvietnam.mvnplugin.mvnforum.db.ThreadBean;
import net.myvietnam.mvnplugin.mvnforum.db.MemberBean;
import net.myvietnam.mvnplugin.mvnforum.MVNForumConfig;
import net.myvietnam.mvnplugin.mvnforum.MyUtil;
import net.myvietnam.mvnplugin.mvnforum.auth.*;

class PostWebHandler {

    private OnlineUserManager userManager = OnlineUserManager.getInstance();

    PostWebHandler() {
    }

    /**
     * This method is for addpost page
     */
    public void prepareAdd(HttpServletRequest request)
        throws DatabaseException, BadInputException, AuthenticationException, AssertionException {

        OnlineUser onlineUser = userManager.getOnlineUser(request);
        MVNForumPermission permission = onlineUser.getPermission();

        // we set this action attribute first because the return below can make method return prematurely
        request.setAttribute("action", "addnew");

        int parentPostID    = 0;
        try {
            // neu co parent thi` khong co forum !!!
            parentPostID = ParamUtil.getParameterInt(request, "parent");
        } catch (Exception ex) {
            // do nothing
            // NOTE: we cannot return here since user can have a parameter parent = 0
        }

        if (parentPostID == 0) {// new thread
            int forumID = ParamUtil.getParameterInt(request, "forum");

            permission.ensureCanNewThread(forumID);
        } else {// reply to a post
            // this is a parent post
            PostBean postBean = PostWebHelper.getPost(parentPostID);// can throw DatabaseException

            // check permission
            int forumID  = postBean.getForumID();

            permission.ensureCanNewPost(forumID);

            // now we prepare to list lastest post in the thread
            int threadID = postBean.getThreadID();
            Collection postBeans = PostWebHelper.getLastBeans_inThread_limit(threadID, MVNForumConfig.ROWS_IN_LAST_REPLIES);

            request.setAttribute("ParentPostBean", postBean);
            request.setAttribute("PostBeans", postBeans);
        }
    }

    public void processAdd(HttpServletRequest request)
        throws AssertionException, DatabaseException, CreateException, BadInputException, ForeignKeyNotFoundException, AuthenticationException {

        OnlineUser onlineUser = userManager.getOnlineUser(request);
        MVNForumPermission permission = onlineUser.getPermission();

        /** @todo is guest can post thread or message */
        permission.ensureIsAuthenticated();

        int memberID        = onlineUser.getMemberID();
        String memberName   = onlineUser.getMemberName();

        Timestamp now       = DateUtil.getCurrentGMTTimestamp();

        int parentPostID    = ParamUtil.getParameterInt(request, "ParentPostID");

        boolean checkEmpty  = false;
        if (parentPostID == 0) checkEmpty = true;

        String postTopic = ParamUtil.getParameterSafe(request, "PostTopic", checkEmpty);
        String postBody  = ParamUtil.getParameter(request, "message", true);// use message instead of MessageBody
        postBody = DisableHtmlTagFilter.filter(postBody);/** @todo remove this, and use this filter when view */

        int forumID = 0;
        int threadID= 0;
        if (parentPostID == 0) {// new thread
            forumID         = ParamUtil.getParameterInt(request, "ForumID");

            // check permission
            permission.ensureCanNewThread(forumID);

            String lastPostMemberName   = memberName;
            int threadType              = 0;//xem lai
            int threadOption            = 0;//xem lai
            int threadStatus            = 0;//xem lai
            int threadHasPoll           = 0;//xem lai
            String threadIcon           = "";//xem lai
            int threadDuration          = 0;//xem lai
            threadID = ThreadWebHelper.createThread(forumID, memberName, lastPostMemberName,
                                   postTopic, postBody, 0/*threadVoteCount*/,
                                   0/*threadVoteTotalStars*/, now/*threadCreationDate*/, now/*threadLastPostDate*/,
                                   threadType, threadOption, threadStatus,
                                   threadHasPoll, 0/*threadViewCount*/, 0/*threadReplyCount*/,
                                   threadIcon, threadDuration);
        } else {// reply to a post
            PostBean parentPostBean = PostWebHelper.getPost(parentPostID);
            forumID = parentPostBean.getForumID();
            threadID = parentPostBean.getThreadID();

            // check permission
            permission.ensureCanNewPost(forumID);
        }

        Timestamp postLastEditDate = now;
        String postCreationIP       = request.getRemoteAddr();
        String postLastEditIP       = "";
        int postFormatOption        = 0;
        int postOption              = 0;
        int postStatus              = 0;
        String postIcon             = "";
        int postAttachCount         = 0;

        PostWebHelper.createPost(parentPostID, forumID, threadID,
                             memberID, memberName, ""/*lastEditMemberName*/,
                             postTopic, postBody, now/*postCreationDate*/,
                             postLastEditDate, postCreationIP, postLastEditIP,
                             0/*postEditCount*/, postFormatOption, postOption,
                             postStatus, postIcon, postAttachCount);

        MemberWebHelper.increasePostCount(memberID);
        ForumWebHelper.increasePostCount(forumID);
        if (parentPostID == 0) {//new thread, so we increase the ForumThreadCount
            ForumWebHelper.increaseThreadCount(forumID);
        }
        if (parentPostID != 0) {//reply to a post in thread, so we increase the ThreadReplyCount
            ThreadWebHelper.increaseReplyCount(threadID);
        }
        ThreadWebHelper.updateLastPostMemberName(threadID, memberName);
        ForumWebHelper.updateLastPostMemberName(forumID, memberName);
        ForumWebHelper.updateForumLastPostDate(forumID, now);
        ThreadWebHelper.updateThreadLastPostDate(threadID, now);
        /** @todo Update PostEditLog table here */

        request.setAttribute("ForumID", String.valueOf(forumID));
        request.setAttribute("ThreadID", String.valueOf(threadID));
        /**@todo: review, this variable is still reserved*/
        //request.setAttribute("ParentPostID", String.valueOf(parentPostID));