function fn_add_product_to_cart($product_data, &$cart, &$auth, $update = false)
{
$ids = array();
if (!empty($product_data) && is_array($product_data)) {
if (!defined('GET_OPTIONS')) {
list($product_data, $cart) = fn_add_product_options_files($product_data, $cart, $auth, $update);
}
fn_set_hook('pre_add_to_cart', $product_data, $cart, $auth, $update);
foreach ($product_data as $key => $data) {
if (empty($key)) {
continue;
}
if (empty($data['amount'])) {
continue;
}
$data['stored_price'] = !empty($data['stored_price']) && AREA != 'C' ? $data['stored_price'] : 'N';
if (empty($data['extra'])) {
$data['extra'] = array();
}
$product_id = !empty($data['product_id']) ? $data['product_id'] : $key;
// Check if product options exist
if (!isset($data['product_options'])) {
$data['product_options'] = fn_get_default_product_options($product_id);
}
// Generate cart id
$data['extra']['product_options'] = $data['product_options'];
$_id = fn_generate_cart_id($product_id, $data['extra'], false);
if (isset($data['extra']['exclude_from_calculate'])) {
if (!empty($cart['products'][$key]) && !empty($cart['products'][$key]['extra']['aoc'])) {
$cart['saved_product_options'][$cart['products'][$key]['extra']['saved_options_key']] = $data['product_options'];
}
if (isset($cart['deleted_exclude_products'][$data['extra']['exclude_from_calculate']][$_id])) {
continue;
}
}
$amount = fn_normalize_amount(@$data['amount']);
if (!isset($data['extra']['exclude_from_calculate'])) {
if ($data['stored_price'] != 'Y') {
// Check if the product price with options modifiers equals to zero
$price = fn_get_product_price($product_id, $amount, $auth);
$price = fn_apply_options_modifiers($data['product_options'], $price, 'P');
if (!floatval($price)) {
$data['price'] = isset($data['price']) ? fn_parse_price($data['price']) : 0;
$zero_price_action = db_get_field("SELECT zero_price_action FROM ?:products WHERE product_id = ?i", $product_id);
if (($zero_price_action == 'R' || $zero_price_action == 'A' && floatval($data['price']) < 0) && AREA == 'C') {
if ($zero_price_action == 'A') {
fn_set_notification('E', fn_get_lang_var('error'), fn_get_lang_var('incorrect_price_warning'));
}
continue;
}
$price = empty($data['price']) ? 0 : $data['price'];
}
} else {
$price = empty($data['price']) ? 0 : $data['price'];
}
} else {
$price = 0;
}
$data['is_edp'] = db_get_field('SELECT is_edp FROM ?:products WHERE product_id = ?i', $product_id);
if (!isset($cart['products'][$_id])) {
// If product doesn't exists in the cart
$amount = empty($data['original_amount']) ? fn_check_amount_in_stock($product_id, $amount, $data['product_options'], $_id, $data['is_edp'], 0, $cart, $update == true ? $key : 0) : $data['original_amount'];
if ($amount === false) {
continue;
}
$cart['products'][$_id]['product_id'] = $product_id;
$cart['products'][$_id]['amount'] = $amount;
$cart['products'][$_id]['product_options'] = $data['product_options'];
$cart['products'][$_id]['price'] = $price;
$cart['products'][$_id]['stored_price'] = $data['stored_price'];
fn_define_original_amount($product_id, $_id, $cart['products'][$_id], $data);
if ($update == true && $key != $_id) {
unset($cart['products'][$key]);
}
} else {
// If product is already exist in the cart
$_initial_amount = empty($cart['products'][$_id]['original_amount']) ? $cart['products'][$_id]['amount'] : $cart['products'][$_id]['original_amount'];
// If ID changed (options were changed), summ the total amount of old and new products
if ($update == true && $key != $_id) {
$amount += $_initial_amount;
unset($cart['products'][$key]);
}
$cart['products'][$_id]['amount'] = fn_check_amount_in_stock($product_id, ($update == true ? 0 : $_initial_amount) + $amount, $data['product_options'], $_id, !empty($data['is_edp']) && $data['is_edp'] == 'Y' ? 'Y' : 'N', 0, $cart, $update == true ? $key : 0);
}
$cart['products'][$_id]['extra'] = empty($data['extra']) ? array() : $data['extra'];
$cart['products'][$_id]['stored_discount'] = @$data['stored_discount'];
if (defined('ORDER_MANAGEMENT')) {
$cart['products'][$_id]['discount'] = @$data['discount'];
}
// Increase product popularity
if (empty($_SESSION['products_popularity']['added'][$product_id])) {
$_data = array('product_id' => $product_id, 'added' => 1, 'total' => POPULARITY_ADD_TO_CART);
db_query("INSERT INTO ?:product_popularity ?e ON DUPLICATE KEY UPDATE added = added + 1, total = total + ?i", $_data, POPULARITY_ADD_TO_CART);
$_SESSION['products_popularity']['added'][$product_id] = true;
}
$company_id = db_get_field("SELECT company_id FROM ?:products WHERE product_id = ?i", $product_id);
$cart['products'][$_id]['company_id'] = $company_id;
fn_set_hook('add_to_cart', $cart, $product_id, $_id);
$ids[$_id] = $product_id;
}
$cart['recalculate'] = true;
return $ids;
} else {
return false;
}
}
/**
* Update cart products from passed products data
*
* @param array $cart Array of cart content and user information necessary for purchase
* @param array $product_data Array of new products data
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
* @return boolean Always true
*/
function fn_update_cart_products(&$cart, $product_data, $auth)
{
/**
* Actions before updating cart products
*
* @param array $cart Array of cart content and user information necessary for purchase
* @param array $product_data Array of new products data
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
*/
fn_set_hook('update_cart_products_pre', $cart, $product_data, $auth);
if (is_array($cart['products']) && !empty($product_data)) {
list($product_data, $cart) = fn_add_product_options_files($product_data, $cart, $auth, true);
unset($product_data['custom_files']);
foreach ($product_data as $k => $v) {
if (!isset($cart['products'][$k]['extra']['exclude_from_calculate'])) {
if (empty($v['extra'])) {
$v['extra'] = array();
}
if ($v['price'] < 0) {
$v['price'] = 0;
}
unset($v['object_id']);
$amount = fn_normalize_amount($v['amount']);
$price = fn_get_product_price($v['product_id'], $amount, $auth);
$v['extra'] = empty($cart['products'][$k]['extra']) ? array() : $cart['products'][$k]['extra'];
$v['extra']['product_options'] = empty($v['product_options']) ? array() : $v['product_options'];
$_id = fn_generate_cart_id($v['product_id'], $v['extra']);
if (!isset($cart['products'][$_id])) {
//if combination doesn't exist in the cart
$cart['products'][$_id] = $v;
$cart['products'][$_id]['company_id'] = !empty($cart['products'][$k]['company_id']) ? $cart['products'][$k]['company_id'] : 0;
$_product = $cart['products'][$k];
fn_define_original_amount($v['product_id'], $_id, $cart['products'][$_id], $_product);
fn_delete_cart_product($cart, $k);
} elseif ($k != $_id) {
// if the combination is exist but differs from the current
$amount += $cart['products'][$_id]['amount'];
fn_delete_cart_product($cart, $k);
}
if (empty($amount)) {
fn_delete_cart_product($cart, $_id);
continue;
} else {
$_product_options = !empty($v['product_options']) ? $v['product_options'] : array();
$cart['products'][$_id]['amount'] = fn_check_amount_in_stock($v['product_id'], $amount, $_product_options, $_id, !empty($cart['products'][$_id]['is_edp']) && $cart['products'][$_id]['is_edp'] == 'Y' ? 'Y' : 'N', !empty($cart['products'][$_id]['original_amount']) ? $cart['products'][$_id]['original_amount'] : 0, $cart);
if ($cart['products'][$_id]['amount'] == false && !empty($_product)) {
$cart['products'][$_id] = $_product;
unset($_product);
}
}
if ($k != $_id) {
$cart['products'][$_id]['prev_cart_id'] = $k;
// save stored taxes for products
fn_update_stored_cart_taxes($cart, $k, $_id, true);
} elseif (isset($cart['products'][$_id]['prev_cart_id'])) {
unset($cart['products'][$_id]['prev_cart_id']);
}
$cart['products'][$_id]['stored_price'] = !empty($v['stored_price']) ? $v['stored_price'] : 'N';
if ($cart['products'][$_id]['stored_price'] == 'Y') {
$cart['products'][$_id]['price'] = $v['price'];
}
$cart['products'][$_id]['stored_discount'] = !empty($v['stored_discount']) ? $v['stored_discount'] : 'N';
if ($cart['products'][$_id]['stored_discount'] == 'Y') {
$cart['products'][$_id]['discount'] = $v['discount'];
}
}
}
}
/**
* Additional cart products updates from passed params
*
* @param array $cart Array of cart content and user information necessary for purchase
* @param array $product_data Array of new products data
* @param array $auth Array of user authentication data (e.g. uid, usergroup_ids, etc.)
*/
fn_set_hook('update_cart_products_post', $cart, $product_data, $auth);
return true;
}
$_suffix = ".customer_info";
}
if ($mode == 'update') {
// Clean up saved shipping rates
unset($_SESSION['shipping_rates']);
if (is_array($cart['products'])) {
$product_data = $_REQUEST['cart_products'];
list($product_data, $cart) = fn_add_product_options_files($product_data, $cart, $customer_auth, true);
unset($product_data['custom_files']);
foreach ($product_data as $k => $v) {
if (!isset($cart['products'][$k]['extra']['exclude_from_calculate'])) {
if (empty($v['extra'])) {
$v['extra'] = array();
}
unset($v['object_id']);
$amount = fn_normalize_amount($v['amount']);
$price = fn_get_product_price($v['product_id'], $amount, $customer_auth);
$v['extra'] = empty($cart['products'][$k]['extra']) ? array() : $cart['products'][$k]['extra'];
$v['extra']['product_options'] = empty($v['product_options']) ? array() : $v['product_options'];
$_id = fn_generate_cart_id($v['product_id'], $v['extra']);
if (!isset($cart['products'][$_id])) {
//if combination doesn't exist in the cart
$cart['products'][$_id] = $v;
$_product = $cart['products'][$k];
fn_define_original_amount($v['product_id'], $_id, $cart['products'][$_id], $_product);
unset($cart['products'][$k]);
} elseif ($k != $_id) {
// if the combination is exist but differs from the current
$amount += $cart['products'][$_id]['amount'];
unset($cart['products'][$k]);
}