/**
* Send a request to the OAuth endpoint.
*
* @param array $params
*
* @return AccessToken
*
* @throws ModomuSDKException
*/
protected function requestAnAccessToken(array $params)
{
$this->lastRequest = new ModomuRequest($this->app, $this->app->getAccessToken(), 'POST', '/oauth2/token', $params);
$response = $this->client->sendRequest($this->lastRequest);
$data = $response->getDecodedBody();
if (!isset($data['access_token'])) {
throw new ModomuSDKException('Access token was not returned from Graph.', 401);
}
// Graph returns two different key names for expiration time
// on the same endpoint. Doh! :/
$expiresAt = 0;
if (isset($data['expires'])) {
// For exchanging a short lived token with a long lived token.
// The expiration time in seconds will be returned as "expires".
$expiresAt = time() + $data['expires'];
} elseif (isset($data['expires_in'])) {
// For exchanging a code for a short lived access token.
// The expiration time in seconds will be returned as "expires_in".
$expiresAt = time() + $data['expires_in'];
}
//Si existe signature validar
/*if (isset($data['signature'])) {
$msj = $this->app->getId() . '|' . $data['issued_at'];
if(!self::verify($msj,$data['signature'],$this->app->getSecret())){
throw new ModomuSDKException("La firma enviada por el servidor no coincide con la esperada", 1);
}
}*/
//Gets access_token
return new AccessToken($data['access_token'], $expiresAt);
}
