<?php

namespace models;

require_once('mt/Item.php');
require_once('mt/ChipQuality.php');
require_once('mt/AttrHelper.php');

use mt;
use phpcommon\SqlHelper;

class Goods extends BaseModel {

    public static function getRemainBuyableNum($goodsMeta)
    {
        self::mustByBuyedNumHash();
        return max(0, $goodsMeta['number_of_props'] - getXVal(self::$buyedNumHash, $goodsMeta['id'], 0));
    }

    private static function mustByBuyedNumHash()
    {
        if (!is_null(self::$buyedNumHash)) {
            return;
        }
        $rows = myself()->_getMarketMysql()->execQuery
              ('SELECT goods_id, count(goods_idx) AS num FROM t_goods WHERE state=1 GROUP BY goods_id;',
               array(

               ));
        self::$buyedNumHash = array();
        foreach ($rows as $row) {
            self::$buyedNumHash[$row['goods_id']] = $row['num'];
        }
    }

    private static $buyedNumHash;

}