/**
* Set the active discount for the shopping cart
*
* @since 1.4.1
* @param string $code Discount code
* @return string[] All currently active discounts
*/
function edd_set_cart_discount($code = '')
{
if (edd_multiple_discounts_allowed()) {
// Get all active cart discounts
$discounts = edd_get_cart_discounts();
} else {
$discounts = false;
// Only one discount allowed per purchase, so override any existing
}
if ($discounts) {
$key = array_search($code, $discounts);
if (false !== $key) {
unset($discounts[$key]);
// Can't set the same discount more than once
}
$discounts[] = $code;
} else {
$discounts = array();
$discounts[] = $code;
}
EDD()->session->set('cart_discounts', implode('|', $discounts));
return $discounts;
}
/**
* Purchase Form Validate Discounts
*
* @access private
* @since 1.0.8.1
* @return string
*/
function edd_purchase_form_validate_discounts()
{
// Retrieve the discount stored in cookies
$discounts = edd_get_cart_discounts();
$user = '';
if (isset($_POST['edd_user_login']) && !empty($_POST['edd_user_login'])) {
$user = sanitize_text_field($_POST['edd_user_login']);
} else {
if (isset($_POST['edd_email']) && !empty($_POST['edd_email'])) {
$user = sanitize_text_field($_POST['edd_email']);
} else {
if (is_user_logged_in()) {
$user = wp_get_current_user()->user_email;
}
}
}
$error = false;
// Check for valid discount(s) is present
if (!empty($_POST['edd-discount']) && __('Enter discount', 'easy-digital-downloads') != $_POST['edd-discount']) {
// Check for a posted discount
$posted_discount = isset($_POST['edd-discount']) ? trim($_POST['edd-discount']) : false;
// Add the posted discount to the discounts
if ($posted_discount && (empty($discounts) || edd_multiple_discounts_allowed()) && edd_is_discount_valid($posted_discount, $user)) {
edd_set_cart_discount($posted_discount);
}
}
// If we have discounts, loop through them
if (!empty($discounts)) {
foreach ($discounts as $discount) {
// Check if valid
if (!edd_is_discount_valid($discount, $user)) {
// Discount is not valid
$error = true;
}
}
} else {
// No discounts
return 'none';
}
if ($error) {
edd_set_error('invalid_discount', __('One or more of the discounts you entered is invalid', 'easy-digital-downloads'));
}
return implode(', ', $discounts);
}
