import mqtt from "mqtt";
import Vue from 'vue'
var vm = new Vue();
// var ip = window.location.host.split(":")[0];
// console.log("ip",ip)
class mqttHandle {
    constructor() {
        this.connect = {
            // host: vm.mqttHost,
            // port: vm.mqttPort,
            endpoint: "/mqtt",
            clean: true, // 保留会话
            cleanSession: true,
            connectTimeout: 7000, // 超时时间
            reconnectPeriod: 7000, // 重连时间间隔
            host: '138.227.111.141',
            port: '8083',
            // 认证信息
            // clientId: Number(new Date()).toString(),
            clientId: 'JBFY',
            username: "admin",
            password: "123456",
        }
        // this.subscription = {
        //     topic: subscribe,  //需要传入数组的包含订阅的名称
        //     qos: 0,
        // }
        this.mqttClient = null;
    }
    /**
     * 创建链接
     * @returns client
     */
    createConnect(onConnected) {
        //配置链接
        const { host, port, endpoint, ...options } = this.connect;
        console.log("this.connect.host", this.connect.host)
        const connectUrl = 'ws://138.227.111.141:8083/mqtt';
        // const connectUrl = `ws://${this.connect.host}:${this.connect.port}`;
        // if (!client.connected) {
        //     client.on('connect', function () {
        //         console.log('连接成功')
        //     })
        // } else {
        //     client.publish('test/clientE', ms, {'qos': 2}, function (err) {
        //         if (err) {
        //             console.log(err)
        //         }
        //     })
        // }
        if (this.mqttClient == undefined) {
            this.mqttClient = mqtt.connect(connectUrl, options);
            this.mqttClient.on("connect", () => {
                console.log("Connection succeeded!");
                onConnected();
            });
            this.mqttClient.on('reconnect', (error) => {
                console.log('正在重连')
            })
            this.mqttClient.on("error", (error) => {
                console.log("Connection failed");
            });

            //配置topic
            // const { topic, qos } = this.subscription;
            // console.log(topic, qos,'topic, qos');
            // this._client.subscribe(topic, { qos: qos }, (error, res) => {
            //     if (error) {
            //         console.log("Subscribe to topics error", error);
            //         return;
            //     }
            //     this.subscribeSuccess = true;
            //     console.log("Subscribe to topics res", res[0].qos, res[0].topic);
            // });
        }

        return this.mqttClient;

        // try {


        // } catch (error) {
        //     console.log("mqtt.connect error", error);
        // }

    }

    MySub(subscriptions) {
        this.mqttClient.subscribe(subscriptions, { qos: 0 }, (err) => {
            if (!err) {
                console.log("订阅成功：" + subscriptions);

            } else {
                console.log('消息订阅失败！' + subscriptions)
            }
        });
    }


    MyUnSub(subscription) {

    }
}
export default mqttHandle;