<?php

namespace App\Services\PrintModule\Pdd;

use GuzzleHttp\Client;
use Illuminate\Support\Facades\Log as LogFile;

class Ktt
{
    protected $clientId = '24f25877aca447c5830a6aa896301d5e';
    protected $clientSecret = '59b6f4bd402c6423878a8f4ef1bde28359c1f05a';
    protected $callBackUrl = 'http://erp.chutang66.com/pdd/ship';

    public function auth($code)
    {
        $accessToken = $this->getAccessTokenWithCode($code);
        LogFile::info('电子面单应用授权: ' . json_encode($accessToken, 256));
    }

    protected function getAccessTokenWithCode($code)
    {
        $type = 'pdd.pop.auth.token.create';
        $res = $this->doRequest($type, ['code' => $code]);

        return $res['pop_auth_token_create_response'];
    }

    public function doRequest($type, $appendParams = [], $url = 'https://gw-api.pinduoduo.com/api/router')
    {
        $publicParams = [
            'type' => $type,
            'client_id' => $this->clientId,
            'timestamp' => time()
        ];
        $publicParams = array_merge($publicParams, $appendParams);
        $publicParams['sign'] = $this->getSign($publicParams);

        return $this->formDataPostRequest($url, $publicParams);
    }

    protected function getSign($params)
    {
        ksort($params);
        $str = '';
        foreach ($params as $key => $val) {
            $str .= $key . $val;
        }
        $str = $this->clientSecret . $str . $this->clientSecret;

        return strtoupper(md5($str));
    }

    protected function formDataPostRequest($url, $params)
    {
        $method = 'POST';
        $headers = [
            'headers' => ['Content-type' => 'application/x-www-form-urlencoded;charset=UTF-8'],
            'form_params' => $params
        ];
        $res = (new Client())->request($method, $url, $headers);
        return json_decode($res->getBody()->getContents(), true);
    }
}