/**
* Sestaveni platebniho tlacitka formou odkazu pro jednoduchou integraci
*
* @param float $targetGoId - identifikace prijemce - GoId pridelene GoPay
* @param string $productName - nazev objednavky / zbozi
* @param int $totalPrice - cena objednavky v halerich
* @param string $currency - identifikator meny
* @param string $orderNumber - identifikace objednavky u prijemce
* @param string $successURL - URL, kam se ma prejit po uspesnem zaplaceni
* @param string $failedURL - URL, kam se ma prejit po neuspesnem zaplaceni
* @param array $paymentChannels - pole plat. metod, ktere se zobrazi na brane
* @param array $defaultPaymentChannel - vychozi platebni metoda
* @param string $secureKey - kryptovaci klic prideleny prijemci, urceny k podepisovani komunikace
*
* @param boolean $preAuthorization - jedna-li se o predautorizovanou platbu
* @param boolean $recurrentPayment - jedna-li se o opakovanou platbu
* @param string $recurrenceDateTo - do kdy se ma opakovana platba provadet
* @param string $recurrenceCycle - frekvence opakovresultane platby - mesic/tyden/den
* @param int $recurrencePeriod - pocet plateb v cyklu $recurrenceCycle - kolikrat v mesici/... se opakovana platba provede
*
* Informace o zakaznikovi
* @param string $firstName - Jmeno zakaznika
* @param string $lastName - Prijmeni
*
* Adresa
* @param string $city - Mesto
* @param string $street - Ulice
* @param string $postalCode - PSC
* @param string $countryCode - Kod zeme. Validni kody jsou uvedeny ve tride CountryCode
* @param string $email - Email zakaznika
* @param string $phoneNumber - Tel. cislo
*
* @param string $p1 - volitelne parametry, ketre budou po navratu z platebni brany predany e-shopu
* @param string $p2 - volitelne parametry, ketre budou po navratu z platebni brany predany e-shopu
* @param string $p3 - volitelne parametry, ketre budou po navratu z platebni brany predany e-shopu
* @param string $p4 - volitelne parametry, ketre budou po navratu z platebni brany predany e-shopu
*
* @param string $lang - jazyk platebni brany
*
* @return string HTML kod platebniho tlacitka
*/
public static function createPaymentHref($targetGoId, $productName, $totalPrice, $currency, $orderNumber, $successURL, $failedURL, $preAuthorization, $recurrentPayment, $recurrenceDateTo, $recurrenceCycle, $recurrencePeriod, $paymentChannels, $defaultPaymentChannel, $secureKey, $firstName, $lastName, $city, $street, $postalCode, $countryCode, $email, $phoneNumber, $p1, $p2, $p3, $p4, $lang)
{
$paymentChannelsString = !empty($paymentChannels) ? join($paymentChannels, ",") : "";
$encryptedSignature = GopayHelper::encrypt(GopayHelper::hash(GopayHelper::concatPaymentCommand((double) $targetGoId, $productName, (int) $totalPrice, $currency, $orderNumber, $failedURL, $successURL, $preAuthorization, $recurrentPayment, $recurrenceDateTo, $recurrenceCycle, $recurrencePeriod, $paymentChannelsString, $secureKey)), $secureKey);
$params = "";
$params .= "paymentCommand.targetGoId=" . $targetGoId;
$params .= "&paymentCommand.productName=" . urlencode($productName);
$params .= "&paymentCommand.totalPrice=" . $totalPrice;
$params .= "&paymentCommand.currency=" . $currency;
$params .= "&paymentCommand.orderNumber=" . urlencode($orderNumber);
$params .= "&paymentCommand.successURL=" . urlencode($successURL);
$params .= "&paymentCommand.failedURL=" . urlencode($failedURL);
$params .= "&paymentCommand.paymentChannels=" . urlencode($paymentChannelsString);
$params .= "&paymentCommand.defaultPaymentChannel=" . urlencode($defaultPaymentChannel);
$params .= "&paymentCommand.encryptedSignature=" . urlencode($encryptedSignature);
$params .= "&paymentCommand.preAuthorization=" . GopayHelper::castBoolean2String($preAuthorization);
$params .= "&paymentCommand.recurrentPayment=" . GopayHelper::castBoolean2String($recurrentPayment);
$params .= "&paymentCommand.recurrenceDateTo=" . urlencode($recurrenceDateTo);
$params .= "&paymentCommand.recurrenceCycle=" . urlencode($recurrenceCycle);
$params .= "&paymentCommand.recurrencePeriod=" . $recurrencePeriod;
$params .= "&paymentCommand.customerData.firstName=" . urlencode($firstName);
$params .= "&paymentCommand.customerData.lastName=" . urlencode($lastName);
$params .= "&paymentCommand.customerData.city=" . urlencode($city);
$params .= "&paymentCommand.customerData.street=" . urlencode($street);
$params .= "&paymentCommand.customerData.postalCode=" . urlencode($postalCode);
$params .= "&paymentCommand.customerData.countryCode=" . urlencode($countryCode);
$params .= "&paymentCommand.customerData.email=" . urlencode($email);
$params .= "&paymentCommand.customerData.phoneNumber=" . urlencode($phoneNumber);
$params .= "&paymentCommand.p1=" . urlencode($p1);
$params .= "&paymentCommand.p2=" . urlencode($p2);
$params .= "&paymentCommand.p3=" . urlencode($p3);
$params .= "&paymentCommand.p4=" . urlencode($p4);
$params .= "&paymentCommand.lang=" . $lang;
$output = "";
$output .= "<a target='_blank' href='" . GopayConfig::baseIntegrationURL() . "?" . $params . "'>";
$output .= " Zaplatit ";
$output .= "</a>";
return $output;
}