Method correctTotalItems

/**
 *
 * @param unknown $total
 * @param unknown $shippingCosts
 * @param unknown $paymentCosts
 * @param array $options - set specific options - this function is called twice so in second loop just set specific option (e.g. to not create brutto currency again)
 * @return boolean
 */
public function correctTotalItems(&$total, &$shippingCosts, &$paymentCosts, $options = array())
{
    if (!isset($total[0]['brutto'])) {
        return false;
    }
    $price = new PhocacartPrice();
    //$paramsC 						= PhocacartUtils::getComponentParameters();
    //$rounding_calculation			= $paramsC->get( 'rounding_calculation', 1 );
    //$rounding_calculation_total	= $paramsC->get( 'rounding_calculation_total', 2 );
    //$currencyRate 				= PhocacartCurrency::getCurrentCurrencyRateIfNotDefault();
    //$currency 					= PhocacartCurrency::getCurrency();
    //$cr							= $currency->exchange_rate;
    $cr = PhocacartCurrency::getCurrentCurrencyRateIfNotDefault();
    $totalDC = 0;
    // total in default currency
    $totalOR = 0;
    // total in order currency
    // Subtotal
    if (isset($total[1]['netto'])) {
        $totalDC += $price->roundPrice($total[1]['netto']);
        $totalOR += $price->roundPrice($total[1]['netto'] * $cr);
    }
    // - Reward points
    if (isset($total[5]['dnetto'])) {
        $totalDC -= $price->roundPrice($total[5]['dnetto']);
        $totalOR -= $price->roundPrice($total[5]['dnetto'] * $cr);
    }
    // - Product Discount
    if (isset($total[2]['dnetto'])) {
        $totalDC -= $price->roundPrice($total[2]['dnetto']);
        $totalOR -= $price->roundPrice($total[2]['dnetto'] * $cr);
    }
    // - Discount cart
    if (isset($total[3]['dnetto'])) {
        $totalDC -= $price->roundPrice($total[3]['dnetto']);
        $totalOR -= $price->roundPrice($total[3]['dnetto'] * $cr);
    }
    // - Coupon cart
    if (isset($total[4]['dnetto'])) {
        $totalDC -= $price->roundPrice($total[4]['dnetto']);
        $totalOR -= $price->roundPrice($total[4]['dnetto'] * $cr);
    }
    // + VAT
    if (!empty($total[0]['tax'])) {
        foreach ($total[0]['tax'] as $k => $v) {
            $totalDC += $price->roundPrice($v['tax']);
            $totalOR += $price->roundPrice($v['tax'] * $cr);
        }
    }
    // + Shipping Costs
    if (isset($shippingCosts['brutto'])) {
        $shippingCosts['bruttorounded'] = $price->roundPrice($shippingCosts['brutto']);
        $totalDC += $price->roundPrice($shippingCosts['brutto']);
        $totalOR += $price->roundPrice($shippingCosts['brutto'] * $cr);
    }
    // + Payment Costs
    if (isset($paymentCosts['brutto'])) {
        $paymentCosts['bruttorounded'] = $price->roundPrice($paymentCosts['brutto']);
        $totalDC += $price->roundPrice($paymentCosts['brutto']);
        $totalOR += $price->roundPrice($paymentCosts['brutto'] * $cr);
    }
    // ------------------------
    // 1) NO ROUNDING - CORRECTION ONLY
    // ------------------------
    // 1a) CORRECT BRUTTO - DEFAULT CURRENCY
    $diff = $total[0]['brutto'] - $totalDC;
    if (!($price->roundPrice($diff) > -0.01 && $price->roundPrice($diff) < 0.01)) {
        $total[0]['rounding'] = $price->roundPrice($diff);
    } else {
        $total[0]['rounding'] = 0;
    }
    // 1b) CORRECT BRUTTO - ORDER CURRENCY
    if ($cr > 1 || $cr < 1) {
        if (isset($options['brutto_currency_set']) && isset($options['brutto_currency_set']) == 1) {
            $totalBruttoCurrency = $price->roundPrice($total[0]['brutto_currency']);
        } else {
            $totalBruttoCurrency = $price->roundPrice($total[0]['brutto'] * $cr);
            $total[0]['brutto_currency'] = $totalBruttoCurrency;
        }
        $diff = $price->roundPrice($totalBruttoCurrency) - $price->roundPrice($totalOR);
        if (!($price->roundPrice($diff) > -0.01 && $price->roundPrice($diff) < 0.01)) {
            $total[0]['rounding_currency'] = $price->roundPrice($diff);
        } else {
            $total[0]['rounding_currency'] = 0;
        }
        return true;
    }
}