package?com.yunfei.action;

import?java.text.SimpleDateFormat;
import?java.util.Date;
import?java.util.linkedList;
import?java.util.List;

import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpSession;

import?org.directwebremoting.scriptBuffer;
import?org.directwebremoting.scriptSession;
import?org.directwebremoting.WebContext;
import?org.directwebremoting.WebContextFactory;

import?com.yunfei.pojo.Message;
import?com.yunfei.pojo.scriptSessionMap;
import?com.yunfei.pojo.User;
import?com.yunfei.pojo.UserList;
import?com.yunfei.service.MessageService;

public?class?PrivateChat?{

	private?MessageService?messageService;

	public?void?setMessageService（MessageService?messageService）?{
		this.messageService?=?messageService;
	}

	/**
	?*?根據sessionid獲得指定用戶的頁面腳本session
	?*?
	?*?@param?sessionid
	?*?@return
	?*/
	@SuppressWarnings（“unchecked“）
	public?scriptSession?getscriptSessionByID（String?sessionid）?{
		scriptSessionMap?ssm?=?scriptSessionMap.getInstance（）;
		return?ssm.getMap（）.get（sessionid）;
	}

	public?String?formatDate（Date?d）?{
		SimpleDateFormat?sdf?=?new?SimpleDateFormat（“yyyy-MM-dd?HH:mm:ss“）;
		String?time?=?sdf.format（d）;
		return?time;
	}

	/**
	?*?發送私人聊天消息
	?*?
	?*?@return
	?*/
	public?synchronized?String?sendPrivateMessages（String?fromUserName
			String?toUserName?String?message?String?fromUserSessionid
			String?toUserSessionid?String?onlineFlag
			HttpServletRequest?request）?{
		linkedList?privateMsg?=?null;
		//?Date?d?=?new?Date（）;

		//?SimpleDateFormat?sdf?=?new?SimpleDateFormat（“HH:mm:ss“）;
		Date?d?=?messageService.getCurrentTimeFromDB（）;
		SimpleDateFormat?sdf?=?new?SimpleDateFormat（“yyyy-MM-dd?HH:mm:ss“）;
		String?time?=?sdf.format（d）;

		Message?m?=?new?Message（）;
		m.setFromUserName（fromUserName）;
		m.setToUserName（toUserName）;
		m.setMessage（message）;
		m.setSendTime（d）;
		if?（onlineFlag.equals（“online“））?{
			m.setFlag（1）;
		}?else?{
			m.setFlag（0）;
		}
		int?msgid?=?messageService.insertNewMsg（m）;
		System.out.println（“新插入的消息id是：“?+?msgid）;

		m.setSendDate（time）;

		HttpSession?session?=?request.getSession（）;

		privateMsg?=?（linkedList）?session.getAttribute（fromUserName
				+?“ChatWith“?+?toUserName）;
		if?（privateMsg?==?null）?{
			privateMsg?=?new?linkedList（）;
		}
		privateMsg.addFirst（m）;
		while?（privateMsg.size（）?>?50）?{
			privateMsg.removeLast（）;
		}
		session
				.setAttribute（fromUserName?+?“ChatWith“?+?toUserName
						privateMsg）;

		scriptSession?fromUserscriptSession?=?this
				.getscriptSessionByID（fromUserSessionid）;

		scriptBuffer?script?=?new?scriptBuffer（）;
		script.appendscript（“receivePrivateMessages（“）.appendData（fromUserName）
				.appendscript（““）.appendData（toUserName）.appendscript（““）
				.appendData（fromUserSessionid）.appendscript（““）.appendData（
						privateMsg）.appendscript（“）;“）;
		if?（onlineFlag.equals（“online“））?{
			scriptSess