package net.wyun.wcrs.wechat;

import java.io.InputStream;
import java.io.Writer;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.xml.PrettyPrintWriter;
import com.thoughtworks.xstream.io.xml.XppDriver;

import net.wyun.wcrs.wechat.message.event.QRCodeEvent;
import net.wyun.wcrs.wechat.message.resp.Article;
import net.wyun.wcrs.wechat.message.resp.NewsMessage;
import net.wyun.wcrs.wechat.message.resp.RespTextMessage;

public class MessageUtil {
	// 请求消息类型：文本
	public static final String REQ_MESSAGE_TYPE_TEXT = "text";
	// 请求消息类型：图片
	public static final String REQ_MESSAGE_TYPE_IMAGE = "image";
	// 请求消息类型：语音
	public static final String REQ_MESSAGE_TYPE_VOICE = "voice";
	// 请求消息类型：视频
	public static final String REQ_MESSAGE_TYPE_VIDEO = "video";
	// 请求消息类型：地理位置
	public static final String REQ_MESSAGE_TYPE_LOCATION = "location";
	// 请求消息类型：链接
	public static final String REQ_MESSAGE_TYPE_LINK = "link";
	// 请求消息类型：事件推送
	public static final String REQ_MESSAGE_TYPE_EVENT = "event";
	// 事件类型：subscribe(订阅)
	public static final String EVENT_TYPE_SUBSCRIBE = "subscribe";
	// 事件类型：unsubscribe(取消订阅)
	public static final String EVENT_TYPE_UNSUBSCRIBE = "unsubscribe";
	// 事件类型：scan(用户已关注时的扫描带参数二维码)
	public static final String EVENT_TYPE_SCAN = "scan";
	// 事件类型：LOCATION(上报地理位置)
	public static final String EVENT_TYPE_LOCATION = "LOCATION";
	// 事件类型：CLICK(自定义菜单)
	public static final String EVENT_TYPE_CLICK = "CLICK";
	// 响应消息类型：文本
	public static final String RESP_MESSAGE_TYPE_TEXT = "text";
	// 响应消息类型：图片
	public static final String RESP_MESSAGE_TYPE_IMAGE = "image";
	// 响应消息类型：语音
	public static final String RESP_MESSAGE_TYPE_VOICE = "voice";
	// 响应消息类型：视频
	public static final String RESP_MESSAGE_TYPE_VIDEO = "video";
	// 响应消息类型：音乐
	public static final String RESP_MESSAGE_TYPE_MUSIC = "music";
	// 响应消息类型：图文
	public static final String RESP_MESSAGE_TYPE_NEWS = "news";
/**
 * 解析微信发来的请求（XML）
 * 
 * @param request
 * @return Map<String, String>
 * @throws Exception
 */
@SuppressWarnings("unchecked")
public static Map<String, String> parseXml(HttpServletRequest request) throws Exception {
	// 将解析结果存储在HashMap中
	Map<String, String> map = new HashMap<String, String>();

	// 从request中取得输入流
	InputStream inputStream = request.getInputStream();
	// 读取输入流
	SAXReader reader = new SAXReader();
	Document document = reader.read(inputStream);
	// 得到xml根元素
	Element root = document.getRootElement();
	// 得到根元素的所有子节点
	List<Element> elementList = root.elements();

	// 遍历所有子节点
	for (Element e : elementList)
		map.put(e.getName(), e.getText());

	// 释放资源
	inputStream.close();
	inputStream = null;

	return map;
}

/**
 * 扩展xstream使其支持CDATA
 */
private static XStream xstream = new XStream(new XppDriver() {
	public HierarchicalStreamWriter createWriter(Writer out) {
		return new PrettyPrintWriter(out) {
			// 对所有xml节点的转换都增加CDATA标记
			boolean cdata = true;

			@SuppressWarnings("unchecked")
			public void startNode(String name, Class clazz) {
				super.startNode(name, clazz);
			}

			protected void writeText(QuickWriter writer, String text) {
				if (cdata) {
					writer.write("<![CDATA[");
					writer.write(text);
					writer.write("]]>");
				} else {
					writer.write(text);
				}
			}
		};
	}
});
/**
 * 文本消息对象转换成xml
 * 
 * @param textMessage 文本消息对象
 * @return xml
 */
public static String messageToXml(RespTextMessage textMessage) {
	xstream.alias("xml", textMessage.getClass());
	return xstream.toXML(textMessage);
}
public static String messageToXml(QRCodeEvent text) {
	xstream.alias("xml", text.getClass());
	return xstream.toXML(text);
}
public static String messageToXml(NewsMessage newsMessage) {
	xstream.alias("xml", newsMessage.getClass());
	xstream.alias("item", new Article().getClass());
	return xstream.toXML(newsMessage);
}
public static String initText(String toUserName,String fromUserName,Long createTime,String msgType,String event,String sceneId,String ticket){
	QRCodeEvent text = new QRCodeEvent();
	text.setFromUserName(toUserName);
	text.setToUserName(fromUserName);
	text.setMsgType(MessageUtil.REQ_MESSAGE_TYPE_TEXT);
	text.setCreateTime(new Date().getTime());
	text.setEvent(event);
	text.setEventKey(sceneId);
	return messageToXml(text);
}
}

@@ -310,24 +310,83 @@
 .SAXReader;%0D
+%0Aimport org.slf4j.Logger;%0D%0Aimport org.slf4j.LoggerFactory;%0D
 %0A%0D%0Aimport co
@@ -895,24 +895,110 @@
 sageUtil %7B%0D%0A
+%09%0D%0A%09private static final Logger logger = LoggerFactory.getLogger(MessageUtil.class);%0D%0A
 %09// %E8%AF%B7%E6%B1%82%E6%B6%88%E6%81%AF%E7%B1%BB%E5%9E%8B%EF%BC%9A%E6%96%87
@@ -3101,16 +3101,69 @@
 entList)
+%7B%0D%0A%09%09logger.debug(e.getName() + %22 : %22 + e.getText());
 %0D%0A%09%09map.
@@ -3193,16 +3193,24 @@
 ext());%0D
+%0A%09%7D%0D%0A%09%09%0D
 %0A%0D%0A%09// %E9%87%8A

add log.