/*
 *  PhotoAction.java
 *  
 *  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
 *  (at your option) 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 Library 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.
 *  
 *  Author: Winter Lau (javayou@gmail.com)
 *  http://dlog4j.sourceforge.net
 *  
 */
package com.liusoft.dlog4j.action;

import java.awt.Graphics2D;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.MessageFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.ArrayList;
import java.util.StringTokenizer;

import javax.imageio.ImageIO;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.upload.FormFile;
import org.htmlparser.Node;
import org.htmlparser.Parser;

import com.liusoft.dlog4j.DLOGSecurityManager;
import com.liusoft.dlog4j.Globals;
import com.liusoft.dlog4j.HtmlNodeFilters;
import com.liusoft.dlog4j.HttpContext;
import com.liusoft.dlog4j.MailTransportQueue;
import com.liusoft.dlog4j.SessionUserObject;
import com.liusoft.dlog4j.base._PhotoBase;
import com.liusoft.dlog4j.beans.AlbumBean;
import com.liusoft.dlog4j.beans.PhotoBean;
import com.liusoft.dlog4j.beans.PhotoOutlineBean;
import com.liusoft.dlog4j.beans.SiteBean;
import com.liusoft.dlog4j.beans.UserBean;
import com.liusoft.dlog4j.dao.AlbumDAO;
import com.liusoft.dlog4j.dao.PhotoDAO;
import com.liusoft.dlog4j.formbean.PhotoForm;
import com.liusoft.dlog4j.photo.FileSystemSaver;
import com.liusoft.dlog4j.photo.Photo;
import com.liusoft.dlog4j.photo.PhotoSaver;
import com.liusoft.dlog4j.search.SearchProxy;
import com.liusoft.dlog4j.util.DLOG4JUtils;
import com.liusoft.dlog4j.util.MailSender;
import com.liusoft.dlog4j.util.RequestUtils;
import com.liusoft.dlog4j.util.StringUtils;

/**
 * 相片Action(只有站長才能對相冊進行操作)
 * @author Winter Lau
 */
public class PhotoAction extends AdminActionBase {

	private final static Log log = LogFactory.getLog(PhotoAction.class);
	private final static String TMP_PHOTO_SHARE = "/WEB-INF/conf/photo_share.html";
	private final static String photo_saver_class = "photo_saver_class";
	private final static String ERROR_KEY = "upload";

	private final static int MAX_MAIL_COUNT = 10;

	/**
	 * 圖片向左旋轉90°
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @param s_photo_id
	 * @return
	 * @throws Exception
	 */
	protected ActionForward doRotateLeft(final ActionMapping mapping,
			final ActionForm form, final HttpServletRequest request,
			final HttpServletResponse response, String s_photo_id) throws Exception 	
	{
		int photo_id = Integer.parseInt(s_photo_id);
		_PhotoBase pbean = PhotoDAO.getPhotoOutlineByID(photo_id);
		if(pbean != null){
			HttpContext http_ctx = getHttpContext(mapping, form, request, response);
			rotate(http_ctx, pbean.getImageURL(), 8);
		}
		return null;
	}

	/**
	 * 圖片向右旋轉90°
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @param s_photo_id
	 * @return
	 * @throws Exception
	 */
	protected ActionForward doRotateRight(final ActionMapping mapping,
			final ActionForm form, final HttpServletRequest request,
			final HttpServletResponse response, String s_photo_id) throws Exception 	
	{
		int photo_id = Integer.parseInt(s_photo_id);
		_PhotoBase pbean = PhotoDAO.getPhotoOutlineByID(photo_id);
		if(pbean != null){
			HttpContext http_ctx = getHttpContext(mapping, form, request, response);
			rotate(http_ctx, pbean.getImageURL(), 6);
		}
		return null;
	}
	
	/**
	 * 照片旋轉
	 * @param ctx
	 * @param imgURL
	 * @param orient
	 * @return
	 * @throws IOException
	 */
	protected boolean rotate(HttpContext ctx, String imgURL, int orient) throws IOException{
		PhotoSaver saver = this.getPhotoSaver();
		InputStream inImg = saver.read(ctx, imgURL);
		BufferedImage old_img = (BufferedImage)ImageIO.read(inImg);	
		int width = old_img.getWidth();
		int height = old_img.getHeight();
		BufferedImage new_img = new BufferedImage(height,width,BufferedImage.TYPE_INT_RGB);        
        Graphics2D g2d =new_img.createGraphics();
        
        AffineTransform origXform = g2d.getTransform();
        AffineTransform newXform = (AffineTransform)(origXform.clone());
        // center of rotation is center of the panel
		double radian = 0;
        double xRot = 0;
        double yRot = 0;
		switch(orient){
		case 3:
			radian = 180.0;
			xRot = width/2.0;
			yRot = height/2.0;
		case 6:
			radian = 90.0;
        	xRot = height/2.0;
        	yRot = xRot;
			break;
		case 8:
			radian = 270.0;
        	xRot = width/2.0;
        	yRot = xRot;
        	break;
        default:
        	return false;
		}
        newXform.rotate(Math.toRadians(radian), xRot, yRot); 

        g2d.setTransform(newXform);   
        // draw image centered in panel
        g2d.drawImage(old_img, 0, 0, null);
        // Reset to Original
        g2d.setTransform(origXform);
        OutputStream out = saver.write(ctx, imgURL);
        try{
        	ImageIO.write(new_img, "JPG", out);
        }finally{
        	out.close();
        }
        return true;
	}

	/**
	 * 推薦照片
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 * @throws Exception
	 */
	protected ActionForward doRecommend(final ActionMapping mapping,
			final ActionForm form, final HttpServletRequest request,
			final HttpServletResponse response, String s_photo_id) throws Exception 			
	{
		PhotoForm pform = (PhotoForm)form;
		super.validateClientId(request, pform);
		
		ActionMessages msgs = new ActionMessages();
		do{
			SessionUserObject loginUser = super.getLoginUser(request,response,false);
			if(loginUser==null){
				msgs.add("photo", new ActionMessage("error.user_not_login"));
				break;
			}
			PhotoOutlineBean pbean = PhotoDAO.getPhotoOutlineByID(pform.getId());
			if(pbean==null||pbean.getStatus()!=PhotoBean.STATUS_NORMAL){
				msgs.add("photo", new ActionMessage("error.invalid_photo", new Integer(pform.getId())));
				break;
			}
			//發送郵件
			String s_mails = request.getParameter("mails");			
			String[] emails = StringUtils.split(s_mails, ";",MAX_MAIL_COUNT);
			if(emails==null || emails.length==0){
				msgs.add("photo", new ActionMessage("error.no_share_mails"));
				break;
			}
			List vtMails = new ArrayList();
			for(int i=0;i<emails.length;i++){
				String sm = emails[i].trim();
				if(StringUtils.isEmail(sm) && !vtMails.contains(sm))
					vtMails.add(sm);
			}
			if(vtMails.size()==0){
				msgs.add("photo", new ActionMessage("error.no_valid_mail"));
				break;
			}
			sendMails(request, loginUser, pbean, vtMails);
			msgs.add("share", new ActionMessage("mail.sent"));
			break;
		}while(true);
		
		if(!msgs.isEmpty())
			saveMessages(request, msgs);
		
		return mapping.findForward("photo_share");
	}
	

	/**
	 * 發送新評論郵件提醒
	 * 
	 * @param request
	 * @param rbean
	 * @throws Exception
	 */
	protected void sendMails(final HttpServletRequest request,
			final SessionUserObject loginUser, final _PhotoBase pbean, final List mails)
			throws Exception {
		
		final String contextPath = request.getContextPath();
		final String urlPrefix = RequestUtils.getUrlPrefix(request);
		final String template = super.getTemplate(TMP_PHOTO_SHARE);
		
		new Thread() {
			public void run() {
				StringBuffer url = new StringBuffer();
				url.append(urlPrefix);
				url.append(contextPath);
				url.append("/html/photo/show.vm?sid=");
				url.append(pbean.getSite().getId());
				url.append("&pid=");
				url.append(pbean.getId());
				String curTime = new SimpleDateFormat("yyyy-MM-dd HH:mm")
						.format(new Date());
				StringBuffer img = new StringBuffer();
				img.append(urlPrefix);
				img.append(contextPath);
				img.append(pbean.getPreviewURL());
				String[] s_mails = new String[mails.size()];
				mails.toArray(s_mails);
				try {
					// 發送郵件
					String mail_content = MessageFormat.format(template,
							new String[]{loginUser.getNickname(),img.toString(), url.toString(),curTime});
					//System.out.println(mail_content);
					Parser html = new Parser();
					html.setEncoding(Globals.ENC_8859_1);
					html.setInputHTML(mail_content);
					Node[] nodes = html.extractAllNodesThatMatch(
							HtmlNodeFilters.titleFilter).toNodeArray();
					String title = nodes[0].toPlainTextString();
					MailSender sender = MailSender.getHtmlMailSender(null, 25,
							null, null);
					sender.setSubject(title);
					sender.setSendDate(new Date());
					sender.setMailContent(mail_content);
					sender.setMailTo(s_mails, "to");
					MailTransportQueue queue = (MailTransportQueue) getServlet()
							.getServletContext().getAttribute(