JellyBool\Translug\Translation

Complexity

Total Complexity

22

Size/Duplication

Total Lines	176
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Test Coverage

Coverage

29.17%

Importance

Changes	1
Bugs	0	Features	0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	translate()	0	4	1
A	translug()	0	4	1
A	getTranslatedText()	0	14	3
A	getTranslation()	0	8	2
A	getTranslatedTextFromResponse()	0	4	1
A	getTranslateUrl()	0	6	1
A	getTranslateUrlV2()	0	12	1
A	isEnglish()	0	8	2
A	removeSegment()	0	4	1
B	getVersion()	0	18	8

<?php

namespace JellyBool\Translug;

use GuzzleHttp\Client;
use JellyBool\Translug\Exceptions\TranslationErrorException;

/**
 * Class Translation.
 */
class Translation
{
    /**
     * Youdao api url.
     *
     * @var string
     */
    protected $api = 'http://fanyi.youdao.com/openapi.do?type=data&doctype=json&version=1.1&';

    /**
     * ai.youdao.com api url
     * @var string
     */
    protected $api_v2 = 'http://openapi.youdao.com/api?from=zh-CHS&to=EN&';

    /**
     * @var Client
     */
    protected $http;

    /**
     * @var array
     */
    protected $config = [];

    /**
     * Translation constructor.
     *
     * @param Client $http
     * @param array  $config
     */
    public function __construct(Client $http, array $config = [])
    {
        $this->http = $http;
        $this->config = $config;
    }

    /**
     * @param $text
     *
     * @return mixed
     */
    public function translate($text)
    {
        return $this->getTranslatedText($text);
    }

    /**
     * @param $text
     *
     * @return string
     */
    public function translug($text)
    {
        return str_slug($this->getTranslatedText($text));
    }

    /**
     * @param $text
     *
     * @return mixed
     */
    private function getTranslatedText($text)
    {
        if ($this->isEnglish($text)) {
            return $text;
        }

        $method = $this->getVersion() == 1 ? 'getTranslateUrl' : 'getTranslateUrlV2';

        $text = $this->removeSegment($text);
        $url = $this->$method($text);
        $response = $this->http->get($url);

        return $this->getTranslation(json_decode($response->getBody(), true));
    }

    /**
     * @param array $translateResponse
     *
     * @return mixed
     */
    private function getTranslation(array $translateResponse)
    {
        if ($translateResponse['errorCode'] == 0) {
            return $this->getTranslatedTextFromResponse($translateResponse);
        }

        throw new TranslationErrorException('Translate error, error_code : '.$translateResponse['errorCode'].'. Refer url: http://fanyi.youdao.com/openapi?path=data-mode');
    }

    /**
     * @param array $translateResponse
     *
     * @return mixed
     */
    private function getTranslatedTextFromResponse(array $translateResponse)
    {
        return $translateResponse['translation'][0];
    }

    /**
     * @param $text
     *
     * @return string
     */
    private function getTranslateUrl($text)
    {
        $query = http_build_query($this->config);

        return $this->api.$query.'&q='.urlencode($text);
    }

    /**
     * @param $text
     *
     * @return string
     */
    private function getTranslateUrlV2($text)
    {
        $key = $this->config['appKey'];
        $secret = $this->config['appSecret'];

        $salt = md5(time());
        $sign = md5($key . $text . $salt . $secret);

        $query = http_build_query(['salt' => $salt, 'sign' => $sign, 'appKey' => $key]);

        return $this->api_v2.$query.'&q='.urlencode($text);
    }

    /**
     * @param $text
     *
     * @return bool
     */
    private function isEnglish($text)
    {
        if (preg_match("/\p{Han}+/u", $text)) {
            return false;
        }

        return true;
    }

    /**
     * Remove segment #.
     *
     * @param $text
     *
     * @return mixed
     */
    private function removeSegment($text)
    {
        return str_replace('#', '', ltrim($text));
    }

    private function getVersion()
    {
        if (!empty($this->config)) {
            return !empty($this->config['keyfrom']) && !empty($this->config['key']) ? 1 : 2;
        }

        if (!empty(config('services.youdao.appKey')) && !empty(config('services.youdao.appSecret'))) {
            $this->config = ['appKey' => config('services.youdao.appKey'), 'appSecret' => config('services.youdao.appSecret')];
            return 2;
        }

        if (!empty(config('services.youdao.from')) && !empty(config('services.youdao.key'))) {
            $this->config = ['keyfrom' => config('services.youdao.from'), 'key' => config('services.youdao.key')];
            return 1;
        }

        throw new TranslationErrorException('Translate error, configuration error');
    }
}