/**
* Before checking out redirect user.
*
* @param string $method
* @param string $return_url
* @param string $cancel_url
*/
public function beforeCheckout($method, $return_url, $cancel_url)
{
global $language, $section, $action;
$result = false;
$fields = array();
$request_id = 0;
$recurring_plan = isset($_SESSION['recurring_plan']) ? $_SESSION['recurring_plan'] : null;
// only react in case right payment method is selected
if ($method != $this->name) {
return $result;
}
// add recurring payment plan
if (!is_null($recurring_plan)) {
$manager = PayPal_PlansManager::getInstance();
$shop = shop::getInstance();
$plan = $manager->getSingleItem($manager->getFieldNames(), array('text_id' => $recurring_plan));
$params = array('price' => $plan->price, 'period' => $plan->interval_count, 'unit' => $plan->interval, 'setup' => $plan->setup_price, 'trial_period' => $plan->trial_count, 'trial_unit' => $plan->trial);
if (is_object($plan)) {
// prepare fields for initial negotiation
$fields["PAYMENTREQUEST_{$request_id}_AMT"] = $plan->price;
$fields["PAYMENTREQUEST_{$request_id}_CURRENCYCODE"] = $shop->getDefaultCurrency();
$fields["PAYMENTREQUEST_{$request_id}_DESC"] = $plan->name[$language];
$fields["PAYMENTREQUEST_{$request_id}_INVNUM"] = $_SESSION['transaction']['uid'];
$fields["PAYMENTREQUEST_{$request_id}_PAYMENTACTION"] = 'Authorization';
$fields['L_BILLINGTYPE' . $request_id] = 'RecurringPayments';
$fields['L_BILLINGAGREEMENTDESCRIPTION' . $request_id] = $shop->formatRecurring($params);
// add one time payment
if ($plan->setup_price > 0) {
$request_id++;
$fields["PAYMENTREQUEST_{$request_id}_AMT"] = $plan->setup_price;
$fields["PAYMENTREQUEST_{$request_id}_CURRENCYCODE"] = $shop->getDefaultCurrency();
$fields["PAYMENTREQUEST_{$request_id}_DESC"] = $this->parent->getLanguageConstant('api_setup_fee');
$fields["PAYMENTREQUEST_{$request_id}_INVNUM"] = $_SESSION['transaction']['uid'];
$fields["PAYMENTREQUEST_{$request_id}_PAYMENTACTION"] = 'Sale';
}
}
}
// TODO: Add other shop items.
$return_url = url_Make($action, $section, array('stage', 'return'), array('payment_method', $this->name));
// add regular fields
$fields['NOSHIPPING'] = 1;
$fields['REQCONFIRMSHIPPING'] = 0;
$fields['ALLOWNOTE'] = 0;
$fields['RETURNURL'] = $return_url;
$fields['CANCELURL'] = $cancel_url;
// generate name-value pair string for sending
$response = PayPal_Helper::callAPI(PayPal_Helper::METHOD_SetExpressCheckout, $fields);
if (isset($response['ACK']) && $response['ACK'] == 'Success' || $response['ACK'] == 'SuccessWithWarning') {
$result = true;
$token = $response['TOKEN'];
// store token for later use
$_SESSION['paypal_token'] = $token;
// redirect to paypal site
PayPal_Helper::redirect(PayPal_Helper::COMMAND_ExpressCheckout, $token);
} else {
if (!is_null($response['ACK'])) {
// report error
$error_code = urldecode($response['L_ERRORCODE0']);
$error_long = urldecode($response['L_LONGMESSAGE0']);
trigger_error("PayPal_Express: ({$error_code}) - {$error_long}", E_USER_ERROR);
}
}
return $result;
}
