<?php
/**
 * ShopEx licence
 *
 * @copyright  Copyright (c) 2005-2010 ShopEx Technologies Inc. (http://www.shopex.cn)
 * @license  http://ecos.shopex.cn/ ShopEx License
 */

/**
 * 单商品价格固定折扣出售
 * $ 2010-05-04 17:06 $
 */
class b2c_promotion_solutions_goods_bypercent implements b2c_interface_promotion_solution
{
    public $name = "以固定折扣出售"; // 名称
    public $type = array('prefilter','cart'); // 应用范围 目前只有[预过滤(prefilter),购物车(cart)]
    public $desc_pre = '商品价格以';
    public $desc_post = '%折扣出售';
    public $desc_tag= '打折';

    /**
     * 优惠方案模板
     * @param array $aConfig // 设置信息(修改的时候传入)
     * @return string // 返回要输出的模板html
     */
    public function config($aData = array()) {
        return <<<EOF
        {$this->desc_pre}<input name="action_solution[b2c_promotion_solutions_goods_bypercent][percent]" vtype='required&&unsigned' value="{$aData['percent']}" />{$this->desc_post}
EOF;
    }

    /**
     * 优惠方案应用
     *
     * @param array $object  // 引用的一个商品信息
     * @param array $aConfig // 优惠的设置
     * @param array $cart_object // 购物车信息(预过滤的时候这个为null)
     * @return void // 引用处理了,没有返回值
     */
    public function apply(&$object,$aConfig,&$cart_object = null) {
        $rulePercent = max(0, $aConfig['percent']);
        $rulePercent = min($rulePercent, 100);

        if(is_null($cart_object)) { // 商品预过滤
            $object['obj_items']['products'][0]['price']['buy_price'] *= ($rulePercent / 100) ;
        } else {// 购物车里的处理
            $productQuantity = $object['obj_items']['products'][0]['quantity'];
            $goodsQuantity = $object['quantity'];
            $qty = $productQuantity * $goodsQuantity;
            $productPrice = $object['obj_items']['products'][0]['price']['buy_price'];
            $discountAmount = ($qty * $productPrice) * ($rulePercent /100);
            $object['discount_amount_order'] = $discountAmount;
        }
    }

    /**
     * 优惠方案应用
     *
     * @param array $object  // 引用的一个商品信息
     * @param array $aConfig // 优惠的设置
     * @param array $cart_object // 购物车信息(预过滤的时候这个为null)
     * @return void // 引用处理了,没有返回值
     */
    public function apply_order(&$object, &$aConfig,&$cart_object = null) {
        if(is_null($cart_object)) return false;
        $rulePercent = max(0, $aConfig['percent']);
        $rulePercent = min($rulePercent, 100);

        //print_r($cart_object);exit;($qty * $productPrice) * ($rulePercent /100);
        $object['discount_amount_order'] = $cart_object['subtotal'] * ($rulePercent /100);
    }


    public function getString($aData=array()) {
        return $this->desc_pre . $aData['percent'] . $this->desc_post;
    }

    function get_desc_tag(){
        if(isset($this->cart_display)){
            $desc_tag['display'] = $this->cart_display;
        }else{
            $desc_tag['display'] = true;
        }
        $desc_tag['name'] = $this->desc_tag;
        return $desc_tag;
    }

}
?>
