/**
* Implementation of hook_civicrm_buildForm()
*
* If the event id of the form being loaded has a discount code, modify
* the form to include the textfield. Only display the textfield on the
* initial registration screen.
*
* Works for events and membership.
*
* @param string $fname
* @param CRM_Contribute_Form_Contribution_Main|CRM_Core_Form $form
*/
function cividiscount_civicrm_buildForm($fname, &$form)
{
// skip for delete action
// also skip when content is loaded via ajax, like payment processor, custom data etc
$snippet = CRM_Utils_Request::retrieve('snippet', 'String', CRM_Core_DAO::$_nullObject, false, null, 'REQUEST');
if ($snippet == 4 || $form->getVar('_action') && $form->getVar('_action') & CRM_Core_Action::DELETE) {
return false;
}
// Display discount textfield for offline membership/events
if (in_array($fname, array('CRM_Contribute_Form_Contribution', 'CRM_Event_Form_Participant', 'CRM_Member_Form_Membership', 'CRM_Member_BAO_Membership'))) {
if ($form->getVar('_single') == 1 || in_array($form->getVar('_context'), array('membership', 'standalone'))) {
_cividiscount_add_discount_textfield($form);
$code = trim(CRM_Utils_Request::retrieve('discountcode', 'String', $form, false, null, 'REQUEST'));
if ($code) {
$defaults = array('discountcode' => $code);
$form->setDefaults($defaults);
}
}
} else {
if (in_array($fname, array('CRM_Event_Form_Registration_Register', 'CRM_Contribute_Form_Contribution_Main', 'CRM_Event_Form_ParticipantFeeSelection'))) {
// Display the discount textfield for online events (including
// pricesets) and memberships.
$ids = $memtypes = array();
$addDiscountField = FALSE;
if (in_array($fname, array('CRM_Event_Form_Registration_Register', 'CRM_Event_Form_ParticipantFeeSelection'))) {
$contact_id = _cividiscount_get_form_contact_id($form);
$discountCalculator = new CRM_CiviDiscount_DiscountCalculator('event', $form->getVar('_eventId'), $contact_id, NULL, TRUE);
$addDiscountField = $discountCalculator->isShowDiscountCodeField();
} elseif ($fname == 'CRM_Contribute_Form_Contribution_Main') {
$ids = _cividiscount_get_discounted_membership_ids();
if (!empty($form->_membershipBlock['membership_types'])) {
$memtypes = explode(',', $form->_membershipBlock['membership_types']);
} elseif (isset($form->_membershipTypeValues)) {
$memtypes = array_keys($form->_membershipTypeValues);
}
if (count(array_intersect($ids, $memtypes)) > 0) {
$addDiscountField = TRUE;
}
}
if (empty($ids)) {
$ids = _cividiscount_get_discounted_priceset_ids();
if (!empty($ids)) {
if (in_array($form->getVar('_eventId'), $ids)) {
$addDiscountField = TRUE;
}
}
}
// Try to add the textfield. If in a multi-step form, hide the textfield
// but preserve the value for later processing.
if ($addDiscountField) {
_cividiscount_add_discount_textfield($form);
$code = trim(CRM_Utils_Request::retrieve('discountcode', 'String', $form, false, null, 'REQUEST'));
if (empty($code) && $fname == 'CRM_Event_Form_ParticipantFeeSelection') {
$code = _cividiscount_get_item_by_track('civicrm_participant', $form->getVar('_participantId'), $contact_id, TRUE);
}
if ($code) {
$defaults = array('discountcode' => $code);
$form->setDefaults($defaults);
}
}
}
}
}
/**
* @param string $discountCode
* @param array $price_set_amount
* @param $cost
*/
protected function apply_discount($discountCode, &$price_set_amount, &$cost, $event_id)
{
//need better way to determine if cividiscount installed
$autoDiscount = array();
$sql = "select is_active from civicrm_extension where name like 'CiviDiscount%'";
$dao = CRM_Core_DAO::executeQuery($sql, '');
while ($dao->fetch()) {
if ($dao->is_active != '1') {
return;
}
}
$discounted_priceset_ids = _cividiscount_get_discounted_priceset_ids();
$discounts = _cividiscount_get_discounts();
$stat = FALSE;
foreach ($discounts as $key => $discountValue) {
if ($key == $discountCode) {
$events = CRM_Utils_Array::value('events', $discountValue);
$evt_ids = implode(",", $events);
if ($evt_ids == "0" || strpos($evt_ids, $event_id)) {
$event_match = TRUE;
}
//check priceset is_active
if ($discountValue['active_on'] != NULL) {
$today = date('Y-m-d');
$diff1 = date_diff(date_create($today), date_create($discountValue['active_on']));
if ($diff1->days > 0) {
$active1 = TRUE;
}
} else {
$active1 = TRUE;
}
if ($discountValue['expire_on'] != NULL) {
$diff2 = date_diff(date_create($today), date_create($discountValue['expire_on']));
if ($diff2->days > 0) {
$active2 = TRUE;
}
} else {
$active2 = TRUE;
}
}
if ($discountValue['is_active'] == TRUE && ($discountValue['count_max'] == 0 || $discountValue['count_max'] > $discountValue['count_use']) && $active1 == TRUE && $active2 == TRUE && $event_match == TRUE) {
foreach ($price_set_amount as $key => $price) {
if (array_search($price['price_field_value_id'], $discounted_priceset_ids) != NULL) {
$discounted = _cividiscount_calc_discount($price['line_total'], $price['label'], $discountValue, $autoDiscount, "USD");
$price_set_amount[$key]['line_total'] = $discounted[0];
$cost += $discounted[0];
$price_set_amount[$key]['label'] = $discounted[1];
} else {
$cost += $price['line_total'];
}
}
$stat = TRUE;
}
}
return $stat;
}
