package com.cjs.site.biz.ec;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;

import org.apache.commons.lang3.StringUtils;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.socket.CloseStatus;
import org.springframework.web.socket.TextMessage;
import org.springframework.web.socket.WebSocketSession;
import org.springframework.web.socket.handler.TextWebSocketHandler;

import com.cjs.site.util.lang.JsonUtil;
import com.cjs.site.util.redis.JedisTemplate;

/**
 * 商品详细信息
 * 
 * @author tongyufu
 *
 */
@Service
public class EcEntrustDetailHandler extends TextWebSocketHandler {

    /**藏品信息Key(redis的Hash)*/
    public static final String                                        ENTRUST_DETAIL     = "entrust:detail2";
    public static Map<String, CopyOnWriteArrayList<WebSocketSession>> WEBSOCKET_SESSIONS = new HashMap<String, CopyOnWriteArrayList<WebSocketSession>>();
    Logger                                                            log                = LogManager
        .getLogger();
    @Autowired
    private JedisTemplate                                             jedisTemplate;

    @Override
    public void afterConnectionEstablished(WebSocketSession session) throws Exception {
        super.afterConnectionEstablished(session);
    }

    @SuppressWarnings("unchecked")
    @Override
    protected void handleTextMessage(WebSocketSession session,
                                     TextMessage message) throws Exception {
        super.handleTextMessage(session, message);
        String otcCode = message.getPayload();
        if (StringUtils.isBlank(otcCode)) {
            return;
        }
        CopyOnWriteArrayList<WebSocketSession> sessions = WEBSOCKET_SESSIONS.get(otcCode);

        if (sessions == null) {
            sessions = new CopyOnWriteArrayList<WebSocketSession>();
        }
        sessions.add(session);
        WEBSOCKET_SESSIONS.put(otcCode, sessions);
        String entrust = jedisTemplate.get(ENTRUST_DETAIL);
        if (StringUtils.isNotBlank(entrust)) {
            Map<String, Map<String, Object>> entrustMap = JsonUtil.fromJson(entrust, HashMap.class);
            entrust = JsonUtil.toJson(entrustMap.get(otcCode));
            session.sendMessage(new TextMessage(entrust));
        }
    }

    @Override
    public void afterConnectionClosed(WebSocketSession session,
                                      CloseStatus status) throws Exception {
        super.afterConnectionClosed(session, status);
        removeSession(session);
    }

    @Override
    public void handleTransportError(WebSocketSession session,
                                     Throwable exception) throws Exception {
        super.handleTransportError(session, exception);
        log.error("EcEntrustDetailHandler WebScoket传输出错[" + session.getId() + "]："
                  + exception.getMessage(),
            exception);
        if (session.isOpen()) {
            session.close();
        }
        removeSession(session);
    }

    private void removeSession(WebSocketSession session) {
        for (String otcCode : WEBSOCKET_SESSIONS.keySet()) {
            CopyOnWriteArrayList<WebSocketSession> sessions = WEBSOCKET_SESSIONS.get(otcCode);
            if (sessions.contains(session)) {
                sessions.remove(session);
                WEBSOCKET_SESSIONS.put(otcCode, sessions);
                break;
            }
        }
    }
}