<?php
/**
 * WeightShippingModifier is the default shipping calculation
 * scheme. It lets you set fixed shipping* costs, or a fixed
 * cost for each country you're delivering to.
 * 
 * If you require more advanced shipping control, we suggest
 * that you create your own subclass of {@link OrderModifier}
 * 
 * @package ecommerce
 */
 
 /*
 _config.php
 
 Order::set_modifiers(array("SimpleShippingModifier"));
WeightShippingModifier::set_default_charge(10);

WeightShippingModifier::set_shippingCostsZone1(array(
   'a1000' => 10,
   'a2000' => 20
 ));           
 
WeightShippingModifier::set_shippingCostsZone2(array(
   'a500' => 15,
   'a1000' => 20,
   'a1500' => 25,
   'a2000' => 30
 ));
 
 
 */
class WeightShippingModifier extends OrderModifier {
        
        	static $default_charge = 0;
        
        static function set_default_charge($defaultCharge) {
                self::$default_charge = $defaultCharge;
        }
	static $shippingCostsZone1 = array();  //CEE
	
	static function set_shippingCostsZone1($array) {
    self::$shippingCostsZone1 = array_merge(self::$shippingCostsZone1, $array);  
  }
  
  	static $shippingCostsZone2 = array();  //EXTRA CEE
	
	static function set_shippingCostsZone2($array) {
    self::$shippingCostsZone2 = array_merge(self::$shippingCostsZone2, $array);
  }
		
	function LiveAmount() {
		$order = ShoppingCart::current_order();
		/*
		function totalWeight(){
    $total = 0;
		$order = ShoppingCart::current_order();
		$items = $order->Items();
    if($items){
  		foreach($items as $item) {
        $total += $item->Weight * $item->Quantity;
  		}
		}
		return $total;

	}
		*/
		$totalWeight = $order->totalWeight();
		$shippingZone = $this->Zone();
		$country = '';
		
		// if there is a shipping country then check whether it is national or international
		if($shippingZone) {
			if($shippingZone == 'CEE') return $this->getCostFromWeightList($totalWeight, self::$shippingCostsZone1);
			else return $this->getCostFromWeightList($totalWeight, self::$shippingCostsZone2);
		}
		else {
			if($order->MemberID && $member = DataObject::get_by_id('Member', $order->MemberID)) {
				if($member->Country) $country = $member->Country;
				else $country = Geoip::visitor_country(); 
			}
			if(!$country) $country = 'CEE';	
			if($country == 'IT') return $this->getCostFromWeightList($totalWeight, self::$shippingCostsZone1);
			else return $country;
		}
	}
	
	/**
	 * Get the cost from a list of max-weight => cost pairs
	 */
	function getCostFromWeightList($totalWeight, $shippingCosts) {
    if($shippingCosts) {
			foreach($shippingCosts as $weight => $cost) {
			  $weight = intval(substr($weight,1));
				if($totalWeight < $weight) return $cost;
			}  
			return array_pop($shippingCosts);
		}
	}
	
	function Country() {
    return $this->ID ? $this->Country : $this->LiveCountry();
  }
  
  function Zone() {
    $zone = '';
    $id = $this->Country();
    switch($id){
      case 'IT':
      $zone = "CEE";
      break;
      default:
      $zone = $id;
    }
    return $zone;
  }
        
        function IsDefaultCharge() {
                return $this->ID ? $this->ShippingChargeType == 'Default' : $this->LiveIsDefaultCharge();
        }
        
        protected function LiveCountry() {
                $order = ShoppingCart::current_order();
                return $order->findShippingCountry(true);
        }
        
        protected function LiveIsDefaultCharge() {
                return !$this->LiveCountry() || !array_key_exists($this->LiveCountry(), self::$charges_by_country);
        }
	
	function Currency() {
		      if(class_exists('Payment')) {
			     return Payment::site_currency();
		      }
	      }
	
        function ShowInCart() {
                return $this->Total() > 0;
        }
        
        /**
         * @TODO Add i18n entities to the text.
         * @return string
         */
        function TableTitle() {
                if($this->Country()) {
                        $countryList = Geoip::getCountryDropDown();
                        return "{$countryList[$this->Country()]}";
                } else {
                        return;
                }
        }
	
}
?>