<?php
namespace App\Helper;
use App\Helper\UniPlatform\BaseAPI;
use App\Helper\UniPlatform\BaseUniPlatform;
use Carbon\Carbon;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\GuzzleException;

/**
 * Class Kuaishou
 *
 * @package App\Helper
 * @property-read  string $appId
 * @property-read  string $slat
 * @property-read  string $secret
 * @property-read  string $token
 * @property-read  string $accessTokenFile
 * @property-read  string $accessToken
 * @property-read  string $noticeUrl
 * @property-read  string $validTimestamp
 */
class Kuaishou extends BaseUniPlatform
{
    public function __construct(BaseAPI $api)
    {
        $this->API  = $api;
    }

    /**
     * @param string $code
     * @return array|mixed
     * @throws \Exception
     */
    public function login($code = ''): array
    {
        return $this->post($this->API::LOGIN, [
            'app_id'       => $this->appId,
            'app_secret'   => $this->secret,
            'js_code'      => $code,
        ]);
    }


    protected function createOrder($outOrderNo, $totalAmount): array
    {
        // TODO: Implement createOrder() method.
    }


    protected function getAccessToken(): string
    {
        $res = $this->post($this->API::ACCESS_TOKEN, [
            'app_id'      => $this->appId,
            'app_secret'  => $this->secret,
            'grant_type'  => 'client_credentials',
        ]);
        if (!isset($res['result']) || $res['result'] != 1) {
            throw new \Exception('获取access token 错误');
        }

        file_put_contents($this->accessTokenFile, json_encode([
            'access_token' => $res['access_token'],
            'expires_at'   => Carbon::now()->timestamp + $res['expires_in']
        ]));

        return $res['access_token'];
    }

    protected function setAccessFileDir(): void
    {
        $this->accessTokenDir = storage_path('app/kuaishou');
    }

    protected function setAccessFilePath(): void
    {
        $this->accessTokenFile = storage_path('app/kuaishou/kuaishou_access_token.json');
    }

    /**
     * @param string $uri
     * @param array  $data
     * @return array
     * @throws \Exception
     */
    protected function post($uri = '', $data = []): array
    {
        try {
            $client = new Client();
            $url = $uri.'?'.http_build_query($data);
            $res = $client->post($url, [
                'verify'  => false,
                'headers' => ['Content-Type' => 'x-www-form-urlencoded'],
            ]);
            $stringBody = (string)$res->getBody();
            $res = json_decode($stringBody, true);

            if(!isset($res['result']) || $res['result'] != 1){
                throw new \Exception("请求快手API接口错误，错误码:{$res['result']}，错误信息:{$res['error_msg']}");
            }
            return $res;
        } catch (GuzzleException $e) {
            \Log::error($e->getMessage());
            throw new \Exception($e->getMessage());
        }
    }
}