token

    public function acquireAccessToken()
    {
        $params = [
            'client_id' =>  $this->id,
            'client_secret' => $this->secret,
            'grant_type' => 'client_credentials'
        ];
//      $client = new GuzzleHttp\Client([
//          'verify' => FALSE,
//          'base_uri' => 'https://app.gosms.cz/'
//      ]);
//      try {
////            $request = new GuzzleHttp\Psr7\Request('post', 'oauth/v2/token');
//          $response = $client->post('oauth/v2/token', $params);
////            $response = $client->send($request, $params);
//          if ($response->getStatusCode() === 200) {
//              $responseArray = $response->getBody();
//              Debugger::barDump($responseArray, 'response body');
//          } else {
//              throw new InvalidStateException('App did not retrieve access token. Something is wrong.');
//          }
//      } catch (GuzzleHttp\Exception\ClientException $e) {
//          Debugger::barDump($e->getRequest(), 'request');
//          Debugger::barDump($e->getResponse(), 'error response');
//          Debugger::barDump($e->getResponse()->getReasonPhrase(), 'reason');
//      }

        $request = $this->createRequest('oauth/v2/token', FALSE);
        try {
            $response = $request->post($params);
            $body = Json::decode($response->getResponse());
            $this->accessToken = $body->access_token;
            $this->cache->save('token', $this->accessToken, [
                Cache::EXPIRE => $body->expires_in
            ]);
        } catch(Curl\BadStatusException $e) {
            Debugger::log($e);
        }

//      $response = \Requests::post(self::BASE_URI.'oauth/v2/token', [], $params);
////        Debugger::barDump($response->body);
//      $body = Json::decode($response->body);
//      $this->accessToken = $body->access_token;
//      $this->cache->save('token', $this->accessToken, [
//          Cache::EXPIRE => $body->expires_in
//      ]);
    }