/**
* Make a remote request to PayPal API.
*
* @see https://developer.paypal.com/docs/classic/api/NVPAPIOverview/#creating-an-nvp-request
*
* @param array $params NVP request parameters
* @return array NVP response
*/
protected function _request(array $params)
{
try {
wc_gateway_ppec_log(sprintf('%s: trying to make a request to PayPal with params: %s', __METHOD__, print_r($params, true)));
// Make sure $_credential and $_environment have been configured.
if (!$this->_credential) {
throw new Exception(__('Missing credential', 'woocommerce-gateway-paypal-express-checkout'), self::INVALID_CREDENTIAL_ERROR);
}
if (!is_a($this->_credential, 'WC_Gateway_PPEC_Client_Credential')) {
throw new Exception(__('Invalid credential object', 'woocommerce-gateway-paypal-express-checkout'), self::INVALID_CREDENTIAL_ERROR);
}
if (!in_array($this->_environment, array('live', 'sandbox'))) {
throw new Exception(__('Invalid environment', 'woocommerce-gateway-paypal-express-checkout'), self::INVALID_ENVIRONMENT_ERROR);
}
// First, add in the necessary credential parameters.
$body = array_merge($params, $this->_credential->get_request_params());
$args = array('method' => 'POST', 'body' => $body, 'user-agent' => __CLASS__, 'httpversion' => '1.1', 'timeout' => 30);
// For cURL transport.
add_action('http_api_curl', array($this->_credential, 'configure_curl'), 10, 3);
wc_gateway_ppec_log(sprintf('%s: remote request to %s with args: %s', __METHOD__, $this->get_endpoint(), print_r($args, true)));
$resp = wp_safe_remote_post($this->get_endpoint(), $args);
wc_gateway_ppec_log(sprintf('%s: response from remote request to %s: %s', __METHOD__, $this->get_endpoint(), print_r($resp, true)));
if (is_wp_error($resp)) {
throw new Exception(sprintf(__('An error occurred while trying to connect to PayPal: %s', 'woocommerce-gateway-paypal-express-checkout'), $resp->get_error_message()), self::REQUEST_ERROR);
}
parse_str(wp_remote_retrieve_body($resp), $result);
if (!array_key_exists('ACK', $result)) {
throw new Exception(__('Malformed response received from PayPal', 'woocommerce-gateway-paypal-express-checkout'), self::REQUEST_ERROR);
}
wc_gateway_ppec_log(sprintf('%s: acknowleged response body: %s', __METHOD__, print_r($result, true)));
remove_action('http_api_curl', array($this->_credential, 'configure_curl'), 10);
// Let the caller deals with the response.
return $result;
} catch (Exception $e) {
remove_action('http_api_curl', array($this->_credential, 'configure_curl'), 10);
// TODO: Maybe returns WP_Error ?
$error = array('ACK' => 'Failure', 'L_ERRORCODE0' => $e->getCode(), 'L_SHORTMESSAGE0' => 'Error in ' . __METHOD__, 'L_LONGMESSAGE0' => $e->getMessage(), 'L_SEVERITYCODE0' => 'Error');
wc_gateway_ppec_log(sprintf('%s: exception is thrown while trying to make a request to PayPal: %s', __METHOD__, $e->getMessage()));
wc_gateway_ppec_log(sprintf('%s: returns error: %s', __METHOD__, print_r($error, true)));
return $error;
}
}
/**
* {@inheritdoc}
*/
public function get_request_params()
{
$params = parent::get_request_params();
$params['SIGNATURE'] = $this->_signature;
return $params;
}
