import com.thoughtworks.xstream.XStream;
import com.bean.TextMessage;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import javax.servlet.http.HttpServletRequest;
import java.io.InputStream;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


public class MessageUtils {
    public static final String MESSAGE_TEXT = "text";
    public static final String MESSAGE_IMAGE = "image";
    public static final String MESSAGE_VOICE = "voice";
    public static final String MESSAGE_VIDEO = "video";
    public static final String MESSAGE_LINK = "link";
    public static final String MESSAGE_LOCATION = "location";

    public static final String MESSAGE_EVENT = "event";
    public static final String MESSAGE_SUBSCRIBE = "subscribe";//关注事件
    public static final String MESSAGE_UNSUBSCRIBE = "unsubscribe";
    public static final String MESSAGE_CLICK = "CLICK";
    public static final String MESSAGE_VIEW = "VIEW";


    /**
     * xml转map
     *
     */
    public static Map<String, String> xmlToMap(HttpServletRequest request) throws Exception {

        Map<String, String> map = new HashMap<>();

        SAXReader reader = new SAXReader();
        InputStream ins = request.getInputStream();
        Document doc = reader.read(ins);
        Element root = doc.getRootElement();
        List<Element> list = root.elements();

        for (Element element : list) {
            map.put(element.getName(), element.getText());
        }

        ins.close();
        return map;
    }


    /**
     * 文本转xml
     *
     */
    public static String testMessageToXml(TextMessage textMessage) {
        XStream xStream = new XStream();
        xStream.alias("xml", textMessage.getClass());
        return xStream.toXML(textMessage);
    }

    /**
     * 拼接文本消息
     *
     * @param toUserName
     * @param fromUserName
     * @param content
     * @return
     */
    public static String initText(String toUserName, String fromUserName, String content) {
        TextMessage text = new TextMessage();
        text.setFromUserName(toUserName);
        text.setToUserName(fromUserName);
        text.setMsgType("text");
        text.setCreateTime(new Date().getTime() + "");
        text.setContent(content);
        return MessageUtils.testMessageToXml(text);

    }


}