package com.moral.webSocketServer;

import com.alibaba.fastjson.JSON;
import com.moral.common.util.ParameterUtils;
import com.moral.entity.Device;
import com.moral.entity.Sensor;
import com.moral.service.DeviceService;
import com.moral.service.SensorService;
import com.moral.util.RabbitMQUtils;
import com.rabbitmq.client.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.util.ObjectUtils;

import javax.annotation.PostConstruct;
import javax.websocket.*;
import javax.websocket.server.PathParam;
import javax.websocket.server.ServerEndpoint;
import java.io.IOException;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

@Slf4j
@ServerEndpoint("/web/WebSocket/{param}")
@Component

public class BSWebsocketServer {

    public static DeviceService deviceService;

    public static SensorService sensorService;

    /**
     * concurrent包的线程安全Set，用来存放每个客户端对应的WebSocket对象。
     */
    private static ConcurrentHashMap<String, BSWebsocketServer> webSocketMap = new ConcurrentHashMap<>();
    /**
     * 与某个客户端的连接会话，需要通过它来给客户端发送数据
     */
    private Session session;

    private String orgId;

    private String accountId;

    private String regionCode;

    private String mac;

    private final String exchange = "screens_data";

    private static Map<String, Sensor> sensors;



    @PostConstruct
    public void init() {
        sensors = new HashMap<>();
        List<Sensor> allSensors = sensorService.getAllSensors();
        for (Sensor sensor : allSensors) {
            sensors.put(sensor.getSensorKey(), sensor);
        }
    }

    /**
     * 连接建立成功调用的方法
     */
    @OnOpen
    public void onOpen(Session session, @PathParam("param") String param) {
        this.session = session;
        String[] params = param.split("&");
        this.accountId = params[0];
        this.orgId = params[1];
        this.regionCode = params[2];

        if (webSocketMap.containsKey(accountId)) {
            webSocketMap.remove(accountId);
            webSocketMap.put(accountId, this);
        } else {
            webSocketMap.put(accountId, this);
        }

        Map<String, Object> paramMap = new HashMap<String, Object>();
        paramMap.put("orgId", orgId);
        paramMap.put("regionCode", regionCode);
        ParameterUtils.getRegionType4RegionCode(paramMap);
        List<Device> deviceList = deviceService.queryDevice(paramMap);
        Map<String,Device> deviceMap = new HashMap<>();

        try {
            Connection connection = RabbitMQUtils.getConnection();
            final Channel channel = connection.createChannel();
            //生成临时队列
            String queue = channel.queueDeclare().getQueue();
            //交换机与队列通过routingKey进行绑定
            String routingKey = "";
            for (Device d : deviceList) {
                deviceMap.put(d.getMac(),d);
                routingKey = orgId + "." + d.getMac();
                channel.queueBind(queue, exchange, routingKey);
            }



            //消费消息,手动确认模式。
            channel.basicQos(30);//预先读取数
            channel.basicConsume(queue, false, new DefaultConsumer(channel) {
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                      try{
                          //对从MQ中取出的数据做转换，并且发送风速到客户端
                          Map message = (Map) JSON.parse((String) JSON.parse(new String(body)));
                          sendWindInfo(message);

                          //判断是否接收到客户端发送的mac，如果接收到则返回指定mac设备信息
                          if(mac!=null&&(!mac.equals(0)))
                              sendDeviceInfo(message,deviceMap);

                          //手动确认
                          channel.basicAck(envelope.getDeliveryTag(), true);

                          //判断socket是否已经断开
                          if (!webSocketMap.containsKey(accountId)) {
                              RabbitMQUtils.closeConnectionChannel(connection, channel);
                          }
                      }catch (Exception e){
                          log.error(e.getMessage());
                          RabbitMQUtils.closeConnectionChannel(connection, channel);
                      }
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    @OnClose
    public void onClose() {
        if (webSocketMap.containsKey(accountId)) {
            webSocketMap.remove(accountId);
        }
    }

    //接收到客户端消息操作
    @OnMessage
    public void onMessage(String message, Session session) {
        if (!ObjectUtils.isEmpty(message)) {
            Map<String, Object> map = JSON.parseObject(message);
            this.mac = (String) map.get("mac");
        }
    }

    @OnError
    public void onError(Session session, Throwable error) {
        log.error(error.getMessage());
    }

    public void sendMessage(String message) throws IOException {
        try {
            if (session.isOpen()) {
                this.session.getBasicRemote().sendText(message);
            }
        } catch (IOException e) {

            //log.error(e.getMessage());
        }
    }

    /**
    * @Description: 从客户端连接到socket就一直开始发送风向数据
            * @Param: [param]
            * @return: void
            * @Author: 陈凯裕
            * @Date: 2020/9/30
            */
    private void sendWindInfo(Map<String, Object> param) {
        try {
            Map<String, Object> map = new HashMap<>();
            if (param.get("e23") != null && param.get("mac") != null) {
                map.put("风向", param.get("e23"));
                map.put("mac", param.get("mac"));
                sendMessage(JSON.toJSONString(map));
            }
        } catch (IOException e) {
            log.error("发送风向标数据异常");
        }
    }

    /**
    * @Description: 接收前端mac以及accountid，传送前端指定mac号的设备信息
            * @Param: [param]
            * @return: void
            * @Author: 陈凯裕
            * @Date: 2020/9/30
            */
    private void sendDeviceInfo(Map<String, Object> param,Map<String,Device> deviceMap) {
        String deviceMac = (String) param.get("mac");
        if (mac.equals(deviceMac)) {
            try {
                Map<String,Object> sortMap = new LinkedHashMap<>();

                //先放名称地址，用于排序
                    Device device =deviceMap.get(mac);
                    sortMap.put("名称",device.getName());
                    sortMap.put("地址",device.getAddress());


                //将传感器代号转化为汉字
                param.forEach((key, value) -> {
                    Sensor sensor = sensors.get(key);
                    if (!ObjectUtils.isEmpty(sensor)) {
                        String unit = ObjectUtils.isEmpty(sensor.getUnit()) ? "" : (String) sensor.getUnit();
                        sortMap.put(sensor.getName(), value + unit);
                    }
                });

                sendMessage(JSON.toJSONString(sortMap));
            } catch (IOException e) {
                log.error("根据mac发送设备数据异常");
            }
        }
    }


}