Mengenrabatt

[tom4545]

ich versuche gerade ein osc-modul f?r prozentualen mengenrabatt umzubauen.
leider h?ngt das ding noch wegen der unterschiedlichen datenbankstruktur.
kann mir da mal jemad auf die spr?nge helfen?

<?php
/*
<<<<<<< ot_lev_discount.php
 $Id: ot_lev_discount.php,v 1.0 2002/04/08 01:13:43 hpdl Exp $
=======
 $Id: ot_lev_discount.php,v 1.3 2002/09/04 22:49:11 wilt Exp $
 $Id: ot_lev_discount.php,v 2.4 2006/02/28 12:10:01 maniac101 Exp $
modified to calc discount correctly when tax is included in discount
>>>>>>> 2.4

 osCommerce, Open Source E-Commerce Solutions
 http://www.oscommerce.com

 Copyright (c) 2002 osCommerce

 Released under the GNU General Public License
*/
////
 class ot_lev {
  var $title, $output;

  function ot_lev() {
   $this->code = 'ot_lev';
   $this->title = MODULE_ORDER_TOTAL_LEV_TITLE;
   $this->description = MODULE_ORDER_TOTAL_LEV_DESCRIPTION;
   $this->enabled = MODULE_ORDER_TOTAL_LEV_STATUS;
   $this->sort_order = MODULE_ORDER_TOTAL_LEV_SORT_ORDER;
   $this->include_shipping = MODULE_ORDER_TOTAL_ORDER_TOTAL_LEV_INC_SHIPPING;
   $this->include_tax = MODULE_LEV_INC_TAX;
   $this->calculate_tax = MODULE_ORDER_TOTAL_LEV_CALC_TAX;
   $this->table = MODULE_ORDER_TOTAL_LEV_TABLE;
   $this->credit_class = false;
   $this->output = array();
  }
///////
  function process() {
   global $order, $subtotal, $currencies;
   $od_amount = $this->calculate_credit($this->get_order_total());
   if ($od_amount>0) {
   $this->deduction = $od_amount;
   $this->output[] = array('title' => $this->title . ':',
               'text' => '<b>' . $currencies->format($od_amount) . '</b>',
               'value' => $od_amount);
  $order->info['total'] = $order->info['total'] - $od_amount;
  if ($this->sort_order < $subtotal->sort_order) {
   $order->info['subtotal'] = $order->info['subtotal'] - $od_amount;
  }
}
  }
   
  
 function calculate_credit($amount) {
  global $order;
  $od_amount=0;
  $table_cost = split("[:,]" , MODULE_ORDER_TOTAL_LEV_TABLE);
  for ($i = 0; $i < count($table_cost); $i+=2) {
     if ($amount >= $table_cost[$i]) {
      $od_pc = $table_cost[$i+1];
     }
    }
// Calculate tax reduction if necessary
  if($this->calculate_tax == 'true') {
// Calculate main tax reduction
   $tod_amount = round($order->info['tax']*10)/10*$od_pc/100;
   $order->info['tax'] = $order->info['tax'] - $tod_amount;
// Calculate tax group deductions
   reset($order->info['tax_groups']);
   while (list($key, $value) = each($order->info['tax_groups'])) {
    $god_amount = round($value*10)/10*$od_pc/100;
    $order->info['tax_groups'][$key] = $order->info['tax_groups'][$key] - $god_amount;
   } 
  }
  $od_amount = round($amount*10)/10*$od_pc/100;
//  $od_amount = $od_amount + $tod_amount;
// maniac101 above line was adding tax back into discount incorrectly for me
  return $od_amount;
 }


 function get_order_total() {
  global $order, $cart;
  $order_total = $order->info['total'];
// Check if gift voucher is in cart and adjust total
  $products = $cart->get_products();
  for ($i=0; $i<sizeof($products); $i++) {
   $t_prid = xtc_get_prid($products[$i]['id']);
   $gv_query = xtc_db_query("select products_price, products_tax_class_id, products_model from " . TABLE_PRODUCTS . " where products_id = '" . $t_prid . "'");
   $gv_result = xtc_db_fetch_array($gv_query);
   if (ereg('GIFT', addslashes($gv_result['products_model']))) { 
   $qty = $cart->get_quantity($t_prid);
    $products_tax = xtc_get_tax_rate($gv_result['products_tax_class_id']);
    if ($this->include_tax =='false') {
      $gv_amount = $gv_result['products_price'] * $qty;
   } else {
     $gv_amount = ($gv_result['products_price'] + xtc_calculate_tax($gv_result['products_price'],      $products_tax)) * $qty;
 }
   $order_total=$order_total - $gv_amount;
   }
  }
  if ($this->include_tax == 'false') $order_total=$order_total-$order->info['tax'];
  if ($this->include_shipping == 'false') $order_total=$order_total-$order->info['shipping_cost'];
  return $order_total;
 }  
  
 ////// 
  
  function check() {
   if (!isset($this->check)) {
    $check_query = xtc_db_query("select configuration_value from " . TABLE_CONFIGURATION . " where configuration_key = 'MODULE_ORDER_TOTAL_LEV_STATUS'");
    $this->check = xtc_db_num_rows($check_query);
   }

   return $this->check;
  }
/////
  function keys() {
   return array('MODULE_ORDER_TOTAL_LEV_STATUS', 'MODULE_ORDER_TOTAL_LEV_SORT_ORDER','MODULE_ORDER_TOTAL_LEV_TABLE', 'MODULE_ORDER_TOTAL_LEV_INC_SHIPPING', 'MODULE_ORDER_TOTAL_LEV_INC_TAX','MODULE_ORDER_TOTAL_LEV_CALC_TAX');
  }
///////
  function install() {

	
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, set_function, date_added) values ('MODULE_ORDER_TOTAL_LEV_STATUS', 'true', '6', '1','xtc_cfg_select_option(array(\'true\', \'false\'), ', now())");
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, date_added) values ('MODULE_ORDER_TOTAL_LEV_SORT_ORDER', '999', '6', '2', now())"); 
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, set_function ,date_added) values ( 'MODULE_ORDER_TOTAL_LEV_INC_SHIPPING',
 'true', '6', '3', 'xtc_cfg_select_option(array(\'true\', \'false\'), ', now())");
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, set_function ,date_added) values ('MODULE_ORDER_TOTAL_LEV_INC_TAX', 'true', '6', '4','xtc_cfg_select_option(array(\'true\', \'false\'), ', now())");
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, set_function ,date_added) values ('MODULE_ORDER_TOTAL_LEV_CALC_TAX', 'false', '6', '5','xtc_cfg_select_option(array(\'true\', \'false\'), ', now())"); 
   xtc_db_query("insert into " . TABLE_CONFIGURATION . " (configuration_key, configuration_value, configuration_group_id, sort_order, date_added) values ('MODULE_ORDER_TOTAL_LEV_TABLE', '', '6', '6', now())");
  }

  function remove() {
   xtc_db_query("delete from " . TABLE_CONFIGURATION . " where configuration_key in ('" . implode("', '", $this->keys()) . "')");
  }
 }
?>