<?php
/*                                                                              
    Couffin - A simple PHP shopping basket.                                    
                                                                              
    Copyright 2005 by Georges Auberger                                            
	http://www.auberger.com/couffin
                                                                                                                                                           
    Couffin is free software; you can redistribute it and/or modify               
    it under the terms of the GNU General Public License as published by      
    the Free Software Foundation; either version 2 of the License, or         
    (at your option) any later version.                                       
                                                                              
    Couffin is distributed in the hope that it will be useful,                    
    but WITHOUT ANY WARRANTY; without even the implied warranty of            
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the              
    GNU General Public License for more details.                              
                                                                                                                                                            
    You should have received a copy of the GNU General Public License         
    along with this program; if not, you can find it here:                    
    http://www.gnu.org/copyleft/gpl.html                                      
*/
class shippingManager {

	var $shippingRates;

	function shippingManager($shippingRates) {
		$this->shippingRates = $shippingRates;
	}
	
	function computeShipping($weight) {
		// Only first shipping method supported
		reset($this->shippingRates);
		$shippingRate = current($this->shippingRates);

		if ($weight == 0) {
			return 0;
		} else {
			$rate = $shippingRate[ceil($weight)];
			if ($rate > 0) {
				return $rate;
			} else {
				reset($shippingRate);
				for ($i=1;$i<count($shippingRate);$i++) {
     				next($shippingRate);
				}
				// Flat rate for heavier stuff. Returns the last price.
				return current($shippingRate);
			}
		}
	}

	function getShippingMethod() {
		// Only first shipping method supported
		reset($this->shippingRates);
		return key($this->shippingRates);	
	}
}
?>