merchant_id = $id;
$this->merchant_key = $key;
if (strtolower($server_type) == "sandbox") {
$this->server_url = "https://sandbox.google.com/checkout/";
}
else $this->server_url = "https://checkout.google.com/";
$this->schema_url = "http://checkout.google.com/schema/2";
$this->base_url = $this->server_url . "cws/v2/Merchant/" . $this->merchant_id;
$this->checkout_url = $this->base_url . "/checkout";
$this->checkout_diagnose_url = $this->base_url . "/checkout/diagnose";
$this->request_url = $this->base_url . "/request";
$this->request_diagnose_url = $this->base_url . "/request/diagnose";
//The item, shipping and tax table arrays are initialized
$this->item_arr = array();
$this->shipping_arr = array();
$this->alternate_tax_table_arr = array();
}
/**
* @param $cart_expire
*/
function SetCartExpiration($cart_expire) {
$this->cart_expiration = $cart_expire;
}
/**
* @param $data
*/
function SetMerchantPrivateData($data) {
$this->merchant_private_data = $data;
}
/**
* @param $url
*/
function SetEditCartUrl($url) {
$this->edit_cart_url = $url;
}
/**
* @param $url
*/
function SetContinueShoppingUrl($url) {
$this->continue_shopping_url = $url;
}
/**
* @param $req
*/
function SetRequestBuyerPhone($req) {
$this->_SetBooleanValue('request_buyer_phone', $req, "");
}
/**
* @param $url
* @param string $tax_option
* @param string $coupons
* @param string $gift_cert
*/
function SetMerchantCalculations($url, $tax_option = "false",
$coupons = "false",
$gift_cert = "false"
) {
$this->merchant_calculations_url = $url;
$this->_SetBooleanValue('merchant_calculated', $tax_option, "false");
$this->_SetBooleanValue('accept_merchant_coupons', $coupons, "false");
$this->_SetBooleanValue('accept_gift_certificates', $gift_cert, "false");
}
/**
* @param $google_item
*/
function AddItem($google_item) {
$this->item_arr[] = $google_item;
}
/**
* @param $ship
*/
function AddShipping($ship) {
$this->shipping_arr[] = $ship;
}
/**
* @param $tax
*/
function AddTaxTables($tax) {
if ($tax->type == "default") {
$this->default_tax_table = $tax;
}
elseif ($tax->type == "alternate") {
$this->alternate_tax_table_arr[] = $tax;
}
}
/**
* @return string
*/
function GetXML() {
require_once ('xml-processing/xmlbuilder.php');
$xml_data = new XmlBuilder();
$xml_data->Push('checkout-shopping-cart',
array('xmlns' => $this->schema_url)
);
$xml_data->Push('shopping-cart');
//Add cart expiration if set
if ($this->cart_expiration != "") {
$xml_data->Push('cart-expiration');
$xml_data->Element('good-until-date', $this->cart_expiration);
$xml_data->Pop('cart-expiration');
}
//Add XML data for each of the items
$xml_data->Push('items');
foreach ($this->item_arr as $item) {
$xml_data->Push('item');
$xml_data->Element('item-name', $item->item_name);
$xml_data->Element('item-description', $item->item_description);
$xml_data->Element('unit-price', $item->unit_price,
array('currency' => $item->currency)
);
$xml_data->Element('quantity', $item->quantity);
if ($item->merchant_private_data != '') $xml_data->Element('merchant-private-date',
$item->merchant_private_data
);
if ($item->tax_table_selector != '') {
$xml_data->Element('tax-table-selector', $item->tax_table_selector);
}
$xml_data->Pop('item');
}
$xml_data->Pop('items');
if ($this->merchant_private_data != '') $xml_data->Element('merchant-private-data',
$this->merchant_private_data
);
$xml_data->Pop('shopping-cart');
$xml_data->Push('checkout-flow-support');
$xml_data->Push('merchant-checkout-flow-support');
if ($this->edit_cart_url != '') {
$xml_data->Element('edit-cart-url', $this->edit_cart_url);
}
if ($this->continue_shopping_url != '') $xml_data->Element('continue-shopping-url',
$this->continue_shopping_url
);
if (count($this->shipping_arr) > 0) {
$xml_data->Push('shipping-methods');
}
//Add the shipping methods
foreach ($this->shipping_arr as $ship) {
//Pickup shipping handled in else part
if ($ship->type == "flat-rate" ||
$ship->type == "merchant-calculated"
) {
$xml_data->Push($ship->type . '-shipping',
array('name' => $ship->name)
);
$xml_data->Element('price', $ship->price,
array('currency' => $ship->currency)
);
//Check if shipping restrictions have been specifd=ied
if ($ship->allowed_restrictions ||
$ship->excluded_restrictions
) {
$xml_data->Push('shipping-restrictions');
//Check if allowed restrictions specified
if ($ship->allowed_restrictions) {
$xml_data->Push('allowed-areas');
if ($ship->allowed_country_area != "") $xml_data->Element('us-country-area', '',
array('country-area' =>
$ship->allowed_country_area,
)
);
foreach ($ship->allowed_state_areas_arr as $current) {
$xml_data->Push('us-state-area');
$xml_data->Element('state', $current);
$xml_data->Pop('us-state-area');
}
foreach ($ship->allowed_zip_patterns_arr as $current) {
$xml_data->Push('us-zip-area');
$xml_data->Element('zip-pattern', $current);
$xml_data->Pop('us-zip-area');
}
$xml_data->Pop('allowed-areas');
}
if ($ship->excluded_restrictions) {
$xml_data->Push('allowed-areas');
$xml_data->Pop('allowed-areas');
$xml_data->Push('excluded-areas');
if ($ship->excluded_country_area != "") $xml_data->Element('us-country-area', '',
array('country-area' =>
$ship->excluded_country_area,
)
);
foreach ($ship->excluded_state_areas_arr as $current) {
$xml_data->Push('us-state-area');
$xml_data->Element('state', $current);
$xml_data->Pop('us-state-area');
}
foreach ($ship->excluded_zip_patterns_arr as $current) {
$xml_data->Push('us-zip-area');
$xml_data->Element('zip-pattern', $current);
$xml_data->Pop('us-zip-area');
}
$xml_data->Pop('excluded-areas');
}
$xml_data->Pop('shipping-restrictions');
}
$xml_data->Pop($ship->type . '-shipping');
}
elseif ($ship->type == "pickup") {
$xml_data->Push('pickup', array('name' => $ship->name));
$xml_data->Element('price', $ship->price,
array('currency' => $ship->currency)
);
$xml_data->Pop('pickup');
}
}
if (count($this->shipping_arr) > 0) {
$xml_data->Pop('shipping-methods');
}
if ($this->request_buyer_phone != "") $xml_data->Element('request-buyer-phone-number',
$this->request_buyer_phone
);
if ($this->merchant_calculations_url != "") {
$xml_data->Push('merchant-calculations');
$xml_data->Element('merchant-calculations-url',
$this->merchant_calculations_url
);
if ($this->accept_merchant_coupons != "") $xml_data->Element('accept-merchant-coupons',
$this->accept_merchant_coupons
);
if ($this->accept_gift_certificates != "") $xml_data->Element('accept-gift-certificates',
$this->accept_gift_certificates
);
$xml_data->Pop('merchant-calculations');
}
//Set Default and Alternate tax tables
if ((count($this->alternate_tax_table_arr) != 0) || (isset($this->default_tax_table))) {
if ($this->merchant_calculated != "") {
$xml_data->Push('tax-tables', array('merchant-calculated' => $this->merchant_calculated));
}
else $xml_data->Push('tax-tables');
if (isset($this->default_tax_table)) {
$curr_table = $this->default_tax_table;
foreach ($curr_table->tax_rules_arr as $curr_rule) {
$xml_data->Push('default-tax-table');
$xml_data->Push('tax-rules');
foreach ($curr_rule->state_areas_arr as $current) {
$xml_data->Push('default-tax-rule');
$xml_data->Element('shipping-taxed', $curr_rule->shipping_taxed);
$xml_data->Element('rate', $curr_rule->tax_rate);
$xml_data->Push('tax-area');
if ($curr_rule->country_area != "") {
$xml_data->Element('us-country-area', '', array('country-area' => $curr_rule->country_area));
}
$xml_data->Push('us-state-area');
$xml_data->Element('state', $current);
$xml_data->Pop('us-state-area');
$xml_data->Pop('tax-area');
$xml_data->Pop('default-tax-rule');
}
foreach ($curr_rule->zip_patterns_arr as $current) {
$xml_data->Push('default-tax-rule');
$xml_data->Element('shipping-taxed', $curr_rule->shipping_taxed);
$xml_data->Element('rate', $curr_rule->tax_rate);
$xml_data->Push('tax-area');
if ($curr_rule->country_area != "") {
$xml_data->Element('us-country-area', '', array('country-area' => $curr_rule->country_area));
}
$xml_data->Push('us-zip-area');
$xml_data->Element('zip-pattern', $current);
$xml_data->Pop('us-zip-area');
$xml_data->Pop('tax-area');
$xml_data->Pop('default-tax-rule');
}
$xml_data->Pop('tax-rules');
$xml_data->Pop('default-tax-table');
}
}
if (count($this->alternate_tax_table_arr) != 0) {
$xml_data->Push('alternate-tax-tables');
foreach ($this->alternate_tax_table_arr as $curr_table) {
foreach ($curr_table->tax_rules_arr as $curr_rule) {
$xml_data->Push('alternate-tax-table', array('standalone' => $curr_table->standalone, 'name' => $curr_table->name));
$xml_data->Push('alternate-tax-rules');
foreach ($curr_rule->state_areas_arr as $current) {
$xml_data->Push('alternate-tax-rule');
$xml_data->Element('shipping-taxed', $curr_rule->shipping_taxed);
$xml_data->Element('rate', $curr_rule->tax_rate);
$xml_data->Push('tax-area');
if ($curr_rule->country_area != "") {
$xml_data->Element('us-country-area', '', array('country-area' => $curr_rule->country_area));
}
$xml_data->Push('us-state-area');
$xml_data->Element('state', $current);
$xml_data->Pop('us-state-area');
$xml_data->Pop('tax-area');
$xml_data->Pop('alternate-tax-rule');
}
foreach ($curr_rule->zip_patterns_arr as $current) {
$xml_data->Push('alternate-tax-rule');
$xml_data->Element('shipping-taxed', $curr_rule->shipping_taxed);
$xml_data->Element('rate', $curr_rule->tax_rate);
$xml_data->Push('tax-area');
if ($curr_rule->country_area != "") {
$xml_data->Element('us-country-area', '', array('country-area' => $curr_rule->country_area));
}
$xml_data->Push('us-zip-area');
$xml_data->Element('zip-pattern', $current);
$xml_data->Pop('us-zip-area');
$xml_data->Pop('tax-area');
$xml_data->Pop('alternate-tax-rule');
}
$xml_data->Pop('alternate-tax-rules');
$xml_data->Pop('alternate-tax-table');
}
}
$xml_data->Pop('alternate-tax-tables');
}
$xml_data->Pop('tax-tables');
}
$xml_data->Pop('merchant-checkout-flow-support');
$xml_data->Pop('checkout-flow-support');
$xml_data->Pop('checkout-shopping-cart');
return $xml_data->GetXML();
}
//Code for generating Checkout button
/**
* @param string $size
* @param string $style
* @param string $variant
* @param string $loc
*
* @return string
*/
function CheckoutButtonCode($size = "large", $style = "white",
$variant = "text", $loc = "en_US"
) {
switch ($size) {
case "large":
$width = "180";
$height = "46";
break;
case "medium":
$width = "168";
$height = "44";
break;
case "small":
$width = "160";
$height = "43";
break;
default:
break;
}
if ($variant == "text") {
$data = "";
}
elseif ($variant == "disabled") {
$data = "![\"Checkout\"](\"")
server_url . "buttons/checkout.gif?merchant_id=" . $this->merchant_id . "&w=" . $width . "&h=" . $height . "&style=" . $style . "&variant=" . $variant . "&loc=" . $loc . "\"
height=\"" . $height . "\" width=\"" . $width . "\" />
";
}
return $data;
}
//Method which returns the encrypted google cart to make sure that the carts are not tampered with
/**
* @param $data
*
* @return string
*/
function CalcHmacSha1($data) {
$key = $this->merchant_key;
$blocksize = 64;
$hashfunc = 'sha1';
if (strlen($key) > $blocksize) {
$key = pack('H*', $hashfunc($key));
}
$key = str_pad($key, $blocksize, chr(0x00));
$ipad = str_repeat(chr(0x36), $blocksize);
$opad = str_repeat(chr(0x5c), $blocksize);
$hmac = pack(
'H*', $hashfunc(
($key ^ $opad) . pack(
'H*', $hashfunc(
($key ^ $ipad) . $data
)
)
)
);
return $hmac;
}
//Method used internally to set true/false cart variables
/**
* @param $string
* @param $value
* @param $default
*/
function _SetBooleanValue($string, $value, $default) {
$value = strtolower($value);
if ($value == "true" || $value == "false")eval('$this->' . $string . '="' . $value . '";');
else eval('$this->' . $string . '="' . $default . '";');
}
}