<?php

namespace app\mqtt;

use Workerman\Connection\TcpConnection;

/**
 * 订阅
 */
class Subscribe
{
    public  function onConnect(TcpConnection $connection)
    {
        $mqtt = new \Workerman\Mqtt\Client('mqtt://ceshi-mqtt.lihaink.cn:1883', array(
            "username" => "demo2",
            "password" => "123456",
            "client_id" => "admin_123",
        ));
        $mqtt->connect();
        $connection->mqtt = $mqtt;
    }

    /**
     * {"topic":"demo","type":"add"}
     */
    public function onMessage(TcpConnection $connection, $data)
    {

        $data = json_decode($data, true);
        if ($data == null) {
            $connection->send("参数不能为空");
            return false;
        }
        if (!isset($data['topic']) || $data['topic'] == '') {
            $connection->send("topic为空");
            return false;
        }
        if (!isset($data['type']) || $data['type'] == '') {
            $connection->send("type为空");
            return false;
        }
        $topic = $data['topic'];
        $type = $data['type'];
        if ($type == 'add') {
            $res = $connection->mqtt->subscribe($topic);
            if ($res == null) {
                $connection->send("添加成功");
            } else {
                $connection->send("添加失败");
            }
        } else {
            $res = $connection->mqtt->unsubscribe($topic);
            if ($res == null) {
                $connection->send("删除成功");
            } else {
                $connection->send("删除失败");
            }
        }
    }
}