const mqtt = require('mqtt');
const db=require("./db")
// db.resetpath("../db.sqlite3")

// 创建 MQTT 客户端实例
const client = mqtt.connect('mqtt://82.156.1.111:40000', {
    clientId: 'web_collectorserver',
    username: 'xin',
    password: 'irishk'
});
client.subscribe("topic_who_is_here_back");
// 定义事件处理程序
client.on('connect', () => {
    console.log('MQTT client connected');
    client.subscribe('my/topic');
});
function converjsontokeyvalue(data)
{

    let fields = [];
    let fields1 = [];
    let fields2 = [];
    for (let key in data) {
      // 如果值是字符串，需要用引号包裹
      let value = typeof data[key] === 'string' ? `'${data[key]}'` : data[key];
      fields1.push(key);
        fields2.push( value);

    }

    fields.push(fields1.join(","))
    fields.push(fields2.join(","))
    return fields
}
function converjsontokeyequalvalue(data)
{

    let fields = [];

    for (let key in data) {
      // 如果值是字符串，需要用引号包裹
      let value = typeof data[key] === 'string' ? `'${data[key]}'` : data[key];
        fields.push(key+"="+value);

    }

   
   
    return fields.join(",")
}




client.on('message', async (topic, message) => {
    if (topic==="topic_who_is_here_back")
    {
        var data=JSON.parse(message.toString())
        data.switch1=data.st[0];
        data.switch2=data.st[1];
        data.switch3=data.st[2];
        data.switch4=data.st[3];
        if (data.switch1===undefined)
            {
                data.switch1=true
            }
            if (data.switch2===undefined)
            {
                data.switch2=true
            }
            if (data.switch3===undefined)
            {
                data.switch3=true
            }
            if (data.switch4===undefined)
            {
                data.switch4=true
            }
        if (data.id.split("_")[1]==="4G")
        {
            data.is4G=true
        }else
        {
            data.is4G=false
        }
        data.device="nothing"
        delete data.st;

        let sql="SELECT * FROM `remoteswitch` WHERE `id`=?"

      

       db.query(sql,data.id,function(err, rows){
            if (1)
            {

            }
            var result=rows

            if (result.length===0)
            {

                console.log(data)
                sql="insert into `remoteswitch` ( "+converjsontokeyvalue(data)[0]+" ) values ("+converjsontokeyvalue(data)[1]+")"
                console.log(sql)
                db.query(sql,(err,result)=>{
                    console.log(err)
                    console.log("insert ok")
                })
            }else
            {
              
                sql='update `remoteswitch` set '+converjsontokeyequalvalue(data)+' where id=?'
                console.log(sql)
                db.query(sql,[data.id],(err,result)=>{
                    console.log(err)
                    console.log("update ok")
                })
            }




        })
        //console.log(aaa)


    }

  //  console.log('Received message:', topic, message.toString());
});

client.on('reconnect', () => {
    console.log('MQTT client reconnected');
});

client.on('offline', () => {
    console.log('MQTT client offline');
});

client.on('error', (err) => {
    console.error('MQTT client error:', err);
});

// 在退出时关闭客户端连接
process.on('SIGINT', () => {
    console.log('Exiting...');
    client.end(() => {
        console.log('MQTT client disconnected');
        process.exit();
    });
});

function getdevicemqtt() {
    client.publish('topic_who_is_here', 'who is here');
}

exports.getdevicemqtt=getdevicemqtt