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.rabbitmq.client.*;
import com.moral.util.RabbitMQUtils;
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.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MyWebSocket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 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);

        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) {
                routingKey = orgId + "." + d.getMac();
                channel.queueBind(queue, exchange, routingKey);
            }

            //消费消息,手动确认模式。
            channel.basicQos(1);//每次只消费一条数据
            channel.basicConsume(queue, false, new DefaultConsumer(channel) {
                @Override
                public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                    Map message = (Map) JSON.parse((String) JSON.parse(new String(body)));
                    message = messageFormat(message,deviceList);
                    sendMessage(JSON.toJSONString(message));
                    channel.basicAck(envelope.getDeliveryTag(), false);
                    //判断socket是否已经断开
                    if (!webSocketMap.containsKey(accountId)) {
                        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) {

    }

    @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());
        }
    }

    //将MQ取出的数据进行格式化处理，并且将经纬度注入
    private Map<String,Object> messageFormat( Map<String,Object> param,List<Device> deviceList) {
        Map<String, Object> map = new HashMap<>();
        param.forEach((key, value) -> {
            Sensor sensor = sensors.get(key);
            if (!ObjectUtils.isEmpty(sensor)) {
                String unit = ObjectUtils.isEmpty(sensor.getUnit())?"":(String)sensor.getUnit();
                map.put(sensor.getName(),value+unit);
            }
        });
        String mac = (String) param.get("mac");
        for (Device device : deviceList) {
            if(mac.equals(device.getMac())){
                map.put("纬度",device.getLatitude());
                map.put("经度",device.getLongitude());
                break;
            }
        }
        map.put("mac",mac);
        return map;
    }

}