/**
* start payment
* @param OnlineShop_Framework_IPrice $price
* @param array $config
*
* @return string
* @throws Exception
* @link https://devtools-paypal.com/apiexplorer/PayPalAPIs
*/
public function initPayment(OnlineShop_Framework_IPrice $price, array $config)
{
// check params
$required = ['ReturnURL' => null, 'CancelURL' => null, 'OrderDescription' => null, 'InvoiceID' => null];
$config = array_intersect_key($config, $required);
if (count($required) != count($config)) {
throw new Exception(sprintf('required fields are missing! required: %s', implode(', ', array_keys(array_diff_key($required, $config)))));
}
// create request
$x = new stdClass();
$x->SetExpressCheckoutRequest = new stdClass();
$x->SetExpressCheckoutRequest->Version = $this->protocol;
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails = new stdClass();
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->ReturnURL = $config['ReturnURL'];
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->CancelURL = $config['CancelURL'];
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->NoShipping = "1";
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->AllowNote = "0";
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->PaymentDetails = $this->createPaymentDetails($price);
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->OrderDescription = $config['OrderDescription'];
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->InvoiceID = $config['InvoiceID'];
// add optional config
foreach ($config as $name => $value) {
$x->SetExpressCheckoutRequest->SetExpressCheckoutRequestDetails->{$name} = $value;
}
// execute request
$ret = $this->client->SetExpressCheckout($x);
// check Ack
if ($ret->Ack == 'Success' || $ret->Ack == 'SuccessWithWarning') {
# pay url
return 'https://www.' . $this->environment . '.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=' . $ret->Token;
} else {
$messages = null;
$errors = is_array($ret->Errors) ? $ret->Errors : array($ret->Errors);
foreach ($errors as $error) {
$messages .= $error->LongMessage . "\n";
}
throw new Exception($messages);
}
}
