<?php
/*
  $Id: order_total.php,v 1.1.1.1 2003/09/18 19:05:15 wilt Exp $
  orig : order_total.php,v 1.4 2003/02/11 00:04:53 hpdl Exp $

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

  Copyright (c) 2003 osCommerce

  Released under the GNU General Public License
*/

  class order_total {
    var $modules;

// class constructor
    function order_total() {
      global $language;

      if (defined('MODULE_ORDER_TOTAL_INSTALLED') && tep_not_null(MODULE_ORDER_TOTAL_INSTALLED)) {
        $this->modules = explode(';', MODULE_ORDER_TOTAL_INSTALLED);

        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          include(DIR_WS_LANGUAGES . $language . '/modules/order_total/' . $value);
          include(DIR_WS_MODULES . 'order_total/' . $value);

          $class = substr($value, 0, strrpos($value, '.'));
          $GLOBALS[$class] = new $class;
        }
      }
    }

    function process() {
      $order_total_array = array();
      if (is_array($this->modules)) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ($GLOBALS[$class]->enabled) {
            $GLOBALS[$class]->output = array(); 
            $GLOBALS[$class]->process();

            for ($i=0, $n=sizeof($GLOBALS[$class]->output); $i<$n; $i++) {
              if (tep_not_null($GLOBALS[$class]->output[$i]['title']) && tep_not_null($GLOBALS[$class]->output[$i]['text'])) {
                $order_total_array[] = array('code' => $GLOBALS[$class]->code,
                                             'title' => $GLOBALS[$class]->output[$i]['title'],
                                             'text' => $GLOBALS[$class]->output[$i]['text'],
                                             'value' => $GLOBALS[$class]->output[$i]['value'],
                                             'sort_order' => $GLOBALS[$class]->sort_order);
              }
            }
          }
        }
      }

      return $order_total_array;
    }

    function output() {
      $output_string = '';
      if (is_array($this->modules)) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ($GLOBALS[$class]->enabled) {
            $size = sizeof($GLOBALS[$class]->output);
            for ($i=0; $i<$size; $i++) {
              $output_string .= '              <tr>' . "\n" .
                                '                <td align="right" class="main">' . $GLOBALS[$class]->output[$i]['title'] . '</td>' . "\n" .
                                '                <td align="right" class="main">' . $GLOBALS[$class]->output[$i]['text'] . '</td>' . "\n" .
                                '              </tr>';
            }
          }
        }
      }

      return $output_string;
    }
// ICW ORDER TOTAL CREDIT CLASS/GV SYSTEM - START ADDITION
//
// This function is called in checkout payment after display of payment methods. It actually calls
// two credit class functions.
//
// use_credit_amount() is normally a checkbox used to decide whether the credit amount should be applied to reduce
// the order total. Whether this is a Gift Voucher, or discount coupon or reward points etc.
//
// The second function called is credit_selection(). This in the credit classes already made is usually a redeem box.
// for entering a Gift Voucher number. Note credit classes can decide whether this part is displayed depending on
// E.g. a setting in the admin section.
//
    function credit_selection() {
      $selection_string = '';
      $close_string = '';
      $credit_class_string = '';
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        $header_string = '<tr>' . "\n";
        $header_string .= '   <td><table border="0" width="100%" cellspacing="0" cellpadding="2">' . "\n";
        $output1_string .= '      <tr>' . "\n";
        $header_string .= '        <td class="main"><b>' . TABLE_HEADING_CREDIT . '</b></td>' . "\n";
        $header_string .= '      </tr>' . "\n";
        $header_string .= '    </table></td>' . "\n";
        $header_string .= '  </tr>' . "\n";
        $header_string .= '<tr>' . "\n";
        $header_string .= '   <td><table border="0" width="100%" cellspacing="1" cellpadding="2" class="infoBox">' . "\n";
        $header_string .= '     <tr class="infoBoxContents"><td><table border="0" width="100%" cellspacing="0" cellpadding="2">' ."\n";
       $header_string .= '       <tr><td width="10">' .  tep_draw_separator('pixel_trans.gif', '10', '1') .'</td>' . "\n";
        $header_string .= '           <td colspan="2"><table border="0" width="100%" cellspacing="0" cellpadding="2">' . "\n";
        $close_string   = '                           </table></td>';
        $close_string  .= '<td width="10">' .  tep_draw_separator('pixel_trans.gif', '10', '1') . '</td>';
        $close_string  .= '</tr></table></td></tr></table></td>';
        $close_string  .= '<tr><td width="100%">' .  tep_draw_separator('pixel_trans.gif', '100%', '10') . '</td></tr>';
        reset($this->modules);
        $output_string = '';
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) {
            $use_credit_string = $GLOBALS[$class]->use_credit_amount();
            if ($selection_string =='') $selection_string = $GLOBALS[$class]->credit_selection();
            if ( ($use_credit_string !='' ) || ($selection_string != '') ) {
              $output_string .=  '<tr colspan="4"><td colspan="4" width="100%">' .  tep_draw_separator('pixel_trans.gif', '100%', '10') . '</td></tr>';
              $output_string = ' <tr class="moduleRow" onmouseover="rowOverEffect(this)" onmouseout="rowOutEffect(this)" >' . "\n" .
                               '   <td width="10">' .  tep_draw_separator('pixel_trans.gif', '10', '1') .'</td>' .
                               '     <td class="main"><b>' . $GLOBALS[$class]->header . '</b></td>' . $use_credit_string;
              $output_string .= '<td width="10">' . tep_draw_separator('pixel_trans.gif', '10', '1') . '</td>';
              $output_string .= '  </tr>' . "\n";
              $output_string .= $selection_string;
            }

          }
        }
        if ($output_string != '') {
          $output_string = $header_string . $output_string;
          $output_string .= $close_string;
        }
      }
      return $output_string;
    }


//            if ($selection_string !='') {
//              $output_string .= '</td>' . "\n";
//              $output_string .= $selection_string;
//            }




// update_credit_account is called in checkout process on a per product basis. It's purpose
// is to decide whether each product in the cart should add something to a credit account.
// e.g. for the Gift Voucher it checks whether the product is a Gift voucher and then adds the amount
// to the Gift Voucher account.
// Another use would be to check if the product would give reward points and add these to the points/reward account.
//
    function update_credit_account($i) {
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ( ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) ) {
            $GLOBALS[$class]->update_credit_account($i);
          }
        }
      }
    }
// This function is called in checkout confirmation.
// It's main use is for credit classes that use the credit_selection() method. This is usually for
// entering redeem codes(Gift Vouchers/Discount Coupons). This function is used to validate these codes.
// If they are valid then the necessary actions are taken, if not valid we are returned to checkout payment
// with an error
//
    function collect_posts() {
      global $_POST,$_SESSION;
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ( ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) ) {
            $post_var = 'c' . $GLOBALS[$class]->code;
            if ($_POST[$post_var]) {
 							if (!tep_session_is_registered($post_var)) tep_session_register($post_var);
							$post_var = $_POST[$post_var];
						}
            $GLOBALS[$class]->collect_posts();
          }
        }
      }
    }
// pre_confirmation_check is called on checkout confirmation. It's function is to decide whether the
// credits available are greater than the order total. If they are then a variable (credit_covers) is set to
// true. This is used to bypass the payment method. In other words if the Gift Voucher is more than the order
// total, we don't want to go to paypal etc.
//
    function pre_confirmation_check() {
      global $payment, $order, $credit_covers;
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        $total_deductions  = 0;
        reset($this->modules);
        $order_total = $order->info['total'];
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          $order_total=$this->get_order_total_main($class,$order_total);
          if ( ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) ) {
            $total_deductions = $total_deductions + $GLOBALS[$class]->pre_confirmation_check($order_total);
            $order_total = $order_total - $GLOBALS[$class]->pre_confirmation_check($order_total);
          }
        }
        if ($order->info['total'] - $total_deductions <= 0 ) {
					if(!tep_session_is_registered('credit_covers')) tep_session_register('credit_covers');
          $credit_covers = true;
        }
				else{   // belts and suspenders to get rid of credit_covers variable if it gets set once and they put something else in the cart
					if(tep_session_is_registered('credit_covers')) tep_session_unregister('credit_covers');	
				}
      }
    }
// this function is called in checkout process. it tests whether a decision was made at checkout payment to use
// the credit amount be applied aginst the order. If so some action is taken. E.g. for a Gift voucher the account
// is reduced the order total amount.
//
    function apply_credit() {
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ( ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) ) {
            $GLOBALS[$class]->apply_credit();
          }
        }
      }
    }
// Called in checkout process to clear session variables created by each credit class module.
//
    function clear_posts() {
      global $_POST,$_SESSION;
      if (MODULE_ORDER_TOTAL_INSTALLED) {
        reset($this->modules);
        while (list(, $value) = each($this->modules)) {
          $class = substr($value, 0, strrpos($value, '.'));
          if ( ($GLOBALS[$class]->enabled && $GLOBALS[$class]->credit_class) ) {
            $post_var = 'c' . $GLOBALS[$class]->code;
	            if (tep_session_is_registered($post_var)) tep_session_unregister($post_var);
          }
        }
      }
    }
// Called at various times. This function calulates the total value of the order that the
// credit will be appled aginst. This varies depending on whether the credit class applies
// to shipping & tax
//
    function get_order_total_main($class, $order_total) {
      global $credit, $order;
//      if ($GLOBALS[$class]->include_tax == 'false') $order_total=$order_total-$order->info['tax'];
//      if ($GLOBALS[$class]->include_shipping == 'false') $order_total=$order_total-$order->info['shipping_cost'];
      return $order_total;
    }
// ICW ORDER TOTAL CREDIT CLASS/GV SYSTEM - END ADDITION
  }
?>
