/*
 * $Header: /cvsroot/mvnforum/mvnforum/src/com/mvnforum/MyUtil.java,v 1.42 2006/04/14 17:05:25 minhnn Exp $
 * $Author: minhnn $
 * $Revision: 1.42 $
 * $Date: 2006/04/14 17:05:25 $
 *
 * ====================================================================
 *
 * Copyright (C) 2002-2006 by MyVietnam.net
 *
 * 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 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.
 *
 * 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 at MyVietnam net
 *
 * @author: Minh Nguyen  
 * @author: Mai  Nguyen  
 */
package com.mvnforum;

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.OutputStream;
import java.util.*;

import javax.servlet.http.*;

import com.mvnforum.auth.*;
import com.mvnforum.db.*;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import net.myvietnam.mvncore.MVNCoreInfo;
import net.myvietnam.mvncore.exception.*;
import net.myvietnam.mvncore.filter.*;
import net.myvietnam.mvncore.util.*;
import net.myvietnam.mvncore.web.GenericRequest;
import net.myvietnam.mvncore.web.GenericResponse;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class MyUtil {

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

    public static final String CSS_ROW_BODY = "portlet-section-body";
    public static final String CSS_ROW_ALTERNATE = "portlet-section-alternate";

    private static RankCache rankCache = RankCache.getInstance();

    public static String filter(String input, boolean enableHTML, boolean enableEmotion,
                                boolean enableMVNCode, boolean enableNewLine, boolean enableURL) {
        String output = input;

        if (enableHTML) {
            output = EnableHtmlTagFilter.filter(output);
        } else {
            output = DisableHtmlTagFilter.filter(output);
        }

        if (enableEmotion) {
            output = EnableEmotionFilter.filter(output, ParamUtil.getContextPath() + MVNForumGlobal.EMOTION_DIR);
        }

        if (enableMVNCode) {
            output = EnableMVNCodeFilter.filter(output);
        }

        if (enableNewLine) {
            output = HtmlNewLineFilter.filter(output);
        }

        if (enableURL) {
            output = URLFilter.filter(output);
        }
        return output;
    }

    public static String getMemberTitle(int postCount) {
        String title = "";
        try {
            ArrayList rankBeans = rankCache.getBeans();
            for (int i = 0; i < rankBeans.size(); i++) {
                RankBean rankBean = (RankBean)rankBeans.get(i);
                if (rankBean.getRankMinPosts() <= postCount) {
                    title = EnableMVNCodeFilter.filter(rankBean.getRankTitle());
                } else {
                    break;
                }
            }//for
        } catch (Exception ex) {
            log.error("Exception in getMemberTitile", ex);
        }
        return title;
    }

    public static String getForumIconName(long lastLogon, long lastPost) {
        String forumIcon = null;
        if (lastLogon > lastPost) {// no new post
            forumIcon = "f_norm_no.gif";
        } else {// new post
            forumIcon = "f_norm_new.gif";
        }
        return forumIcon;
    }

    public static String getThreadIconName(long lastLogon, long lastPost, int postCount) {
        String threadIcon = null;
        if (postCount < MVNForumConfig.getHotTopicThreshold()) {//not hot topic
            if (lastLogon > lastPost) {// no new post
                threadIcon = "f_norm_no.gif";
            } else {// new post
                threadIcon = "f_norm_new.gif";
            }
        } else {// hot topic
            if (lastLogon > lastPost) {// no new post
                threadIcon = "f_hot_no.gif";
            } else {// new post
                threadIcon = "f_hot_new.gif";
            }
        }
        return threadIcon;
    }

    public static String getThreadStatusName(Locale locale, int threadStatus) {
        String result = null;
        switch (threadStatus) {
        case ThreadBean.THREAD_STATUS_DEFAULT:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.normal");
            break;
        case ThreadBean.THREAD_STATUS_DISABLED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.disabled");
            break;
        case ThreadBean.THREAD_STATUS_LOCKED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.locked");
            break;
        case ThreadBean.THREAD_STATUS_CLOSED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.status.closed");
            break;
        default:
            //throw new AssertionException("Cannot find matching thread status.");
        }
        return result;
    }

    public static String getThreadTypeName(Locale locale, int threadType) {
        String result = "Unknown";
        switch (threadType) {
        case ThreadBean.THREAD_TYPE_DEFAULT:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.normal_thread");
            break;
        case ThreadBean.THREAD_TYPE_STICKY:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.sticky_thread");
            break;
        case ThreadBean.THREAD_TYPE_FORUM_ANNOUNCEMENT:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.announcement_thread");
            break;
        case ThreadBean.THREAD_TYPE_GLOBAL_ANNOUNCEMENT:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.thread.type.global_announcement_thread");
            break;
        default:
            //throw new AssertionException("Cannot find matching thread type.");
        }
        return result;
    }

    public static String getForumStatusName(Locale locale, int forumStatus) {
        String result = null;
        switch (forumStatus) {
        case ForumBean.FORUM_STATUS_DEFAULT:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.normal");
            break;
        case ForumBean.FORUM_STATUS_DISABLED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.disabled");
            break;
        case ForumBean.FORUM_STATUS_LOCKED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.locked");
            break;
        case ForumBean.FORUM_STATUS_CLOSED:
            result = MVNForumResourceBundle.getString(locale, "mvnforum.common.forum.status.closed");
            break;
        default:
            //throw new AssertionException("Cannot find matching forum status.");
        }
        return result;
    }

    public static boolean canViewAnyForumInCategory(int categoryID, MVNForumPermission permission) {
        try {
            Collection forumBeans = ForumCache.getInstance().getBeans();
            for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
                ForumBean forumBean = (ForumBean)iter.next();
                if (forumBean.getCategoryID() == categoryID) {
                    if (canViewForum(forumBean, permission)) {
                        return true;
                    }
                }
            }
        } catch (DatabaseException ex) {
            log.error("Cannot load the data in table Forum", ex);
        }
        return false;
    }

    public static boolean canViewForum(ForumBean forumBean, MVNForumPermission permission) {
        if (permission.canReadPost(forumBean.getForumID()) &&
            (forumBean.getForumStatus() != ForumBean.FORUM_STATUS_DISABLED) ) {
            return true;
        }
        return false;
    }

    public static int getViewablePosts(Collection forumBeans, MVNForumPermission permission) {
        int count = 0;
        for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
            ForumBean forumBean = (ForumBean)iter.next();
            if (canViewForum(forumBean, permission)) {
                count += forumBean.getForumPostCount();
            }
        }
        return count;
    }

    public static int getViewableThreads(Collection forumBeans, MVNForumPermission permission) {
        int count = 0;
        for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
            ForumBean forumBean = (ForumBean)iter.next();
            if (canViewForum(forumBean, permission)) {
                count += forumBean.getForumThreadCount();
            }
        }
        return count;
    }

    public static int getViewableForums(Collection forumBeans, MVNForumPermission permission) {
        int count = 0;
        for (Iterator iter = forumBeans.iterator(); iter.hasNext(); ) {
            ForumBean forumBean = (ForumBean)iter.next();
            if (canViewForum(forumBean, permission)) {
                count++;
            }
        }
        return count;
    }

    public static int getViewableCategories(Collection categoryBeans, MVNForumPermission permission) {
        int count = 0;
        for (Iterator iter = categoryBeans.iterator(); iter.hasNext(); ) {
            CategoryBean categoryBean = (CategoryBean)iter.next();
            if (canViewAnyForumInCategory(categoryBean.getCategoryID(), permission)) {
                count++;
            }
        }
        return count;
    }

    /**