重构了下，请多多指教

<?php
namespace App\Handlers;

use GuzzleHttp\Client;
use Overtrue\Pinyin\Pinyin;


class BaiduTranslate
{
    // 初始化配置信息
    private $api;
    private $appid;
    private $key;

    // 配置翻译方式
    private $from;
    private $to;

    public function __construct($from = 'zh', $to = 'en')
    {
        // 我觉得这部分的属性赋值可以直接用全局变量数组$_ENV代替
        // 应该看看数据库连接的源码找找灵感
        // 这里就先这样写着，作为新手逻辑清晰点
        $this->appid = $_ENV['BAIDU_TRANSLATE_APPID'];
        $this->key = $_ENV['BAIDU_TRANSLATE_KEY'];
        $this->api = $_ENV['BAIDU_TRANSLATE_API_URL'];
        $this->from = $from;
        $this->to = $to;
    }

    public function translate($text)
    {
        // 如果没有配置百度翻译，自动使用兼容的拼音方案
        // 按照个需，这里应该要有报错信息，API 配置不全
        if (empty($this->appid) || empty($this->key)){
            return app(Pinyin::class)->permalink($text);
        }

        // 实例化 HTTP 客户端
        $http = new Client;

        // 发送 HTTP GET 请求
        $response = $http->get($this->query($text));

        // decode 返回的 response body 内的数据
        $result = json_decode($response->getBody(), true);

        if (isset($result['trans_result'][0]['dst'])){
            return $result['trans_result'][0]['dst'];
        }else{
            // 如果百度翻译没有结果，使用拼音作为后备计划
            // 照思路这里应该返回报错，翻译 API 接入有问题
            return app(Pinyin::class)->permalink($text);
        }
    }

    // 创建请求语句
    private function query($text)
    {
        //根据百度翻译API文档，生成 sign
        //http://api.fanyi.baidu.com/api/trans/product/apidoc
        //appid+q+salt+密钥 的MD5值
        $salt = time();
        $sign = md5($this->appid . $text . $salt . $this->key);

        //构建请求参数
        $query = http_build_query([
            'q' => $text,
            'from' => $this->from,
            'to' => $this->to,
            'appid' => $this->appid,
            'salt' => $salt,
            'sign' => $sign,
        ]);

        return $this->api . $query;
    }
}Copy

<?php
namespace App\Handlers;

use GuzzleHttp\Client;
use Illuminate\Support\Str;
use Overtrue\Pinyin\Pinyin;

class SlugTranslator
{

    protected $api = 'http://api.fanyi.baidu.com/api/trans/vip/translate?';
    protected $appid;
    protected $secret;
    protected $from = 'zh';
    protected $to = 'en';

    /**
     * SlugTranslator constructor.
     */
    public function __construct()
    {
        $this->appid = config('services.baidu_translate.appid');
        $this->secret = config('services.baidu_translate.secret');
    }

    /**
     * Get slug
     *
     * @param $text
     *
     * @return string
     */
    public function translate($text)
    {
        $slug = $this->baidu($text) ?: $this->pinyin($text);
        return $slug;
    }

    /**
     * Get slug with Baidu Translate service.
     *
     * @param $text
     *
     * @return bool|string
     */
    public function baidu($text)
    {

        if (empty($this->appid) || empty($this->secret)) {
            return false;
        }

        $salt = time();
        $sign = md5($this->appid . $text . $salt . $this->secret);

        $query = http_build_query([
            'q' => $text,
            'from' => $this->from,
            'to' => $this->to,
            'appid' => $this->appid,
            'salt' => $salt,
            'sign' => $sign,
        ]);

        $http = new Client();
        $response = $http->get($this->api . $query);
        $result = json_decode($response->getBody(), true);

        if (isset($result['trans_result'][0]['dst'])) {
            return Str::slug($result['trans_result'][0]['dst']);
        }

        return false;
    }

    /**
     * Get slug with pinyin.
     *
     * @param $text
     *
     * @return string
     */
    public function pinyin($text)
    {
        return Str::slug(app(Pinyin::class)->permalink($text));
    }
}Copy