import mqtt from 'mqtt/dist/mqtt.js' //引入mqtt依赖

var client
let mqttConnected = false  //mqtt连接状态，这个可以不要，直接查询client.connected即可
const publishTopic = '/test/123/456/set'  //发布Topic
const MQTT_IP = '192.168.9.128:8083/mqtt' //mqtt地址端口
const MQTT_OPTIONS = {
    connectTimeout: 5000,      //连接超时时间
    clientId: 'SiD0FMMAxrs',  //clientId不能重复，这里可以随机生成
    username: 'test',         //用户名
    password: 'test',         //密码
    clean: false
}

//创建客户端连接
export function mqttConnect() {
    // #ifdef H5
    client = mqtt.connect('ws://' + MQTT_IP, MQTT_OPTIONS,function(err){
        console.log(err)
    })
    // #endif
    // #ifdef MP-WEIXIN||APP-PLUS
    client = mqtt.connect('wx://' + MQTT_IP, MQTT_OPTIONS,function(err){
        console.log(err)
    })
    // #endif

    client.on('connect', function() {
        console.log('连接成功')
        mqttConnected = true
    }).on('reconnect', function(error) {
        console.log('正在重连...', error)
        mqttConnected = false
    }).on('error', function(error) {
        console.log('连接失败...', error)
        mqttConnected = false
    }).on('end', function() {
        console.log('连接断开')
        mqttConnected = false
    }).on('close',function(){
        console.log('连接关闭')
        mqttConnected = false
    }).on('offline',function(){
        console.log('客户端下线')
    })
}
//发布消息
export function mqttPublish(msg){
    if(mqttConnected){
        client.publish(publishTopic,msg,{qos:1,retain:false});//hello mqtt +
        console.log('发布了一条消息',msg)
    }else{
        uni.showToast({
            title: 'MQTT服务器未连接',
            icon: 'none'
        });
    }
}
//断开连接
export function mqttDisconnect(){
    console.log('mqttConnected',mqttConnected)
    console.log('client',client)
    if(mqttConnected){
        client.end(true)
        mqttConnected = false
    }

}