<?php
/* ----------------------------------------------------------------------

   MyOOS [Shopsystem]
   https://www.oos-shop.de

   Copyright (c) 2003 - 2019 by the MyOOS Development Team.
   ----------------------------------------------------------------------
   Based on:

   File: shipping.php,v 1.21 2003/02/11 00:04:53 hpdl 
   ----------------------------------------------------------------------
   osCommerce, Open Source E-Commerce Solutions
   http://www.oscommerce.com

   Copyright (c) 2003 osCommerce
   ----------------------------------------------------------------------
   Released under the GNU General Public License
   ---------------------------------------------------------------------- */

  /** ensure this file is being included by a parent file */
  defined( 'OOS_VALID_MOD' ) OR die( 'Direct Access to this location is not allowed.' );

  class shipping {
    var $modules;

// class constructor
   public function __construct($module = '') {
      global $aLang;

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

        $include_modules = array();

        if ( (oos_is_not_null($module)) && (in_array(substr($module['id'], 0, strpos($module['id'], '_')) . '.' . substr($_SERVER['PHP_SELF'], (strrpos($_SERVER['PHP_SELF'], '.')+1)), $this->modules)) ) {
          $include_modules[] = array('class' => substr($module['id'], 0, strpos($module['id'], '_')), 'file' => substr($module['id'], 0, strpos($module['id'], '_')) . '.' . substr($_SERVER['PHP_SELF'], (strrpos($_SERVER['PHP_SELF'], '.')+1)));
        } else {
          foreach ($this->modules as $value) {
            $class = basename($value, '.php');
            $include_modules[] = array('class' => $class, 'file' => $value);
          }
        }

        $sLanguage = isset($_SESSION['language']) ? $_SESSION['language'] : DEFAULT_LANGUAGE;

        for ($i=0, $n=count($include_modules); $i<$n; $i++) {
          include_once MYOOS_INCLUDE_PATH . '/includes/languages/' . $sLanguage . '/modules/shipping/' . $include_modules[$i]['file'];
          include_once MYOOS_INCLUDE_PATH . '/includes/modules/shipping/' . $include_modules[$i]['file'];

          $GLOBALS[$include_modules[$i]['class']] = new $include_modules[$i]['class'];
        }
      }
    }

    public function quote($method = '', $module = '') {
      global $total_weight, $shipping_weight, $shipping_quoted, $shipping_num_boxes;

      $quotes_array = array();

      if (is_array($this->modules)) {
        $shipping_quoted = '';
        $shipping_num_boxes = 1;
        $shipping_weight = $total_weight;

        if ($total_weight > SHIPPING_MAX_WEIGHT) { // Split into many boxes
          $shipping_num_boxes = ceil($total_weight/SHIPPING_MAX_WEIGHT);
          $shipping_weight = $total_weight/$shipping_num_boxes;
        }

        if (SHIPPING_BOX_WEIGHT >= $shipping_weight*SHIPPING_BOX_PADDING/100) {
          $shipping_weight = $shipping_weight+SHIPPING_BOX_WEIGHT;
        } else {
          $shipping_weight = $shipping_weight + ($shipping_weight*SHIPPING_BOX_PADDING/100);
        }

        $include_quotes = array();

        foreach ($this->modules as $value) {
		  $class = basename($value, '.php');
          if (oos_is_not_null($module)) {
            if ( ($module == $class) && ($GLOBALS[$class]->enabled) ) {
              $include_quotes[] = $class;
            }
          } elseif ($GLOBALS[$class]->enabled) {
            $include_quotes[] = $class;
          }
        }

        $size = count($include_quotes);
        for ($i=0; $i<$size; $i++) {
          $quotes = $GLOBALS[$include_quotes[$i]]->quote($method);
          if (is_array($quotes)) $quotes_array[] = $quotes;
        }
      }

      return $quotes_array;
    }

    public function cheapest() {
      if (is_array($this->modules)) {
        $rates = array();

        foreach ($this->modules as $value) {
          $class = basename($value, '.php');
          if ($GLOBALS[$class]->enabled) {
            $quotes = $GLOBALS[$class]->quotes;
            $size = count($quotes['methods']);
            for ($i=0; $i<$size; $i++) {
              if ($quotes['methods'][$i]['cost']) {
                $rates[] = array('id' => $quotes['id'] . '_' . $quotes['methods'][$i]['id'],
                                 'title' => $quotes['module'] . ' (' . $quotes['methods'][$i]['title'] . ')',
                                 'cost' => $quotes['methods'][$i]['cost']);
              }
            }
          }
        }

        $cheapest = FALSE;
        $size = count($rates);
        for ($i=0; $i<$size; $i++) {
          if (is_array($cheapest)) {
            if ($rates[$i]['cost'] < $cheapest['cost']) {
              $cheapest = $rates[$i];
            }
          } else {
            $cheapest = $rates[$i];
          }
        }

        return $cheapest;
      }
    }
  }