/*
 * $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/admin/GroupForumWebHandler.java,v 1.5 2004/05/19 19:11:57 minhnn Exp $
 * $Author: minhnn $
 * $Revision: 1.5 $
 * $Date: 2004/05/19 19:11:57 $
 *
 * ====================================================================
 *
 * Copyright (C) 2002-2004 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:
 * info@MyVietnam.net
 *
 * @author: Minh Nguyen  minhnn@MyVietnam.net
 * @author: Mai  Nguyen  mai.nh@MyVietnam.net
 */
package com.mvnforum.admin;

import java.util.*;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.mvnforum.auth.*;
import com.mvnforum.db.*;
import net.myvietnam.mvncore.exception.*;
import net.myvietnam.mvncore.util.ParamUtil;

class GroupForumWebHandler {

    private static Log log = LogFactory.getLog(GroupForumWebHandler.class);

    private OnlineUserManager onlineUserManager = OnlineUserManager.getInstance();

    GroupForumWebHandler() {
    }

    void prepareList(HttpServletRequest request)
        throws DatabaseException, BadInputException, ObjectNotFoundException, AuthenticationException, AssertionException {

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

        int groupID = ParamUtil.getParameterInt(request, "group");
        int forumID = ParamUtil.getParameterInt(request, "forum");

        permission.ensureCanAssignToForum(forumID);

        GroupsBean groupsBean = DAOFactory.getGroupsDAO().getBean(groupID);
        ForumBean  forumBean  = ForumCache.getInstance().getBean(forumID);

        ArrayList beans = (ArrayList)DAOFactory.getGroupForumDAO().getBeans_inGroupForum(groupID, forumID);
        int currentSize = beans.size();
        int[] currentPermissions = new int[currentSize];
        for (int i = 0; i < currentSize; i++) {
            GroupForumBean bean = (GroupForumBean)beans.get(i);
            currentPermissions[i] = bean.getPermission();
        }

        request.setAttribute("GroupsBean", groupsBean);
        request.setAttribute("ForumBean", forumBean);
        request.setAttribute("CurrentPermissions", currentPermissions);
    }

    void processUpdate(HttpServletRequest request)
        throws CreateException, ObjectNotFoundException, BadInputException, DatabaseException, DuplicateKeyException,
        ForeignKeyNotFoundException, AuthenticationException, AssertionException {

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

        String btnAdd = request.getParameter("btnAdd");
        String btnRemove = request.getParameter("btnRemove");
        boolean addAction = false;
        if ((btnAdd != null) && btnAdd.equals("Add")) {
            addAction = true;
        } else if ((btnRemove != null) && btnRemove.equals("Remove")) {
            addAction = false;
        } else {
            throw new BadInputException("No Add or Remove has been specified. Cannot process!");
        }

        int groupID     = ParamUtil.getParameterInt(request, "group");
        int forumID     = ParamUtil.getParameterInt(request, "forum");

        permission.ensureCanAssignToForum(forumID);

        if (addAction) {
            log.debug("Add List:" + btnAdd);
            String[] addList = request.getParameterValues("add");
            for (int i = 0; (addList != null) && (i < addList.length); i++) {
                int perm = Integer.parseInt(addList[i]);
                log.debug("perm = " + perm);
                DAOFactory.getGroupForumDAO().create(groupID, forumID, perm);
            }
        } else {
            log.debug("Remove List:" + btnRemove);
            String[] removeList = request.getParameterValues("remove");
            for (int i = 0; (removeList != null) && (i < removeList.length); i++) {
                int perm = Integer.parseInt(removeList[i]);
                log.debug("perm = " + removeList[i]);
                DAOFactory.getGroupForumDAO().delete(groupID, forumID, perm);
            }
        }//else
    }

    public void prepareAssignForumToGroup(HttpServletRequest request)
        throws BadInputException, DatabaseException, ObjectNotFoundException,
        AuthenticationException, AssertionException {

        // In this function, we will show the current permission of this group
        OnlineUser onlineUser = onlineUserManager.getOnlineUser(request);
        MVNForumPermission permission = onlineUser.getPermission();
        permission.ensureCanAdminSystem();

        int groupID = ParamUtil.getParameterInt(request, "group");

        GroupsBean groupsBean = DAOFactory.getGroupsDAO().getBean(groupID);
        Collection groupForumBeans = DAOFactory.getGroupForumDAO().getBeans_inGroup(groupID);

        request.setAttribute("GroupsBean", groupsBean);
        request.setAttribute("GroupForumBeans", groupForumBeans);
    }

    public void prepareAssignGroupToForum(HttpServletRequest request)
        throws BadInputException, DatabaseException, ObjectNotFoundException,
        AuthenticationException, AssertionException {

        // In this funrcion, we will show the current permission of this forum
        OnlineUser onlineUser = onlineUserManager.getOnlineUser(request);
        MVNForumPermission permission = onlineUser.getPermission();

        int forumID = ParamUtil.getParameterInt(request, "forum");

        permission.ensureCanAssignToForum(forumID);

        ForumBean forumBean = ForumCache.getInstance().getBean(forumID);
        Collection groupsBeans = DAOFactory.getGroupsDAO().getBeans();
        Collection groupForumBeans = DAOFactory.getGroupForumDAO().getBeans_inForum(forumID);
        Collection memberForumBeans = DAOFactory.getMemberForumDAO().getBeans_inForum(forumID);

        for (Iterator iter = groupForumBeans.iterator(); iter.hasNext(); ) {
            GroupForumBean groupForumBean = (GroupForumBean)iter.next();
            groupForumBean.setGroupsBean(GroupsBean.getGroupsBean(groupsBeans, groupForumBean.getGroupID()));
        }
        for (Iterator iter = memberForumBeans.iterator(); iter.hasNext(); ) {
            MemberForumBean memberForumBean = (MemberForumBean)iter.next();
            //@todo: Optimize (this method can be called many time for just one memberID)
            MemberBean memberBean = DAOFactory.getMemberDAO().getMember_forPublic(memberForumBean.getMemberID());
            memberForumBean.setMemberBean(memberBean);
        }

        request.setAttribute("ForumBean", forumBean);
        request.setAttribute("GroupsBeans", groupsBeans);
        request.setAttribute("GroupForumBeans", groupForumBeans);
        request.setAttribute("MemberForumBeans", memberForumBeans);
    }
}