<?php

class Orange35_Rewrite_Model_Standard extends Mage_Paypal_Model_Standard
{
    public function getStandardCheckoutFormFields()
    {
        $orderIncrementId = $this->getCheckout()->getLastRealOrderId();
        $order = Mage::getModel('sales/order')->loadByIncrementId($orderIncrementId);
        /* @var $api Mage_Paypal_Model_Api_Standard */
        $api = Mage::getModel('paypal/api_standard')->setConfigObject($this->getConfig());
        $api->setOrderId($orderIncrementId)
            ->setCurrencyCode($order->getStore()->getCurrentCurrencyCode())
            //->setPaymentAction()
            ->setOrder($order)
            ->setNotifyUrl(Mage::getUrl('paypal/ipn/'))
            ->setReturnUrl(Mage::getUrl('paypal/standard/success'))
            ->setCancelUrl(Mage::getUrl('paypal/standard/cancel'));

        // export address
        $isOrderVirtual = $order->getIsVirtual();
        $address = $isOrderVirtual ? $order->getBillingAddress() : $order->getShippingAddress();
        if ($isOrderVirtual) {
            $api->setNoShipping(true);
        } elseif ($address->validate()) {
            $api->setAddress($address);
        }

        // add cart totals and line items
        $api->setPaypalCart(Mage::getModel('paypal/cart', array($order)))
            ->setIsLineItemsEnabled($this->_config->lineItemsEnabled)
        ;
        $api->setCartSummary($this->_getAggregatedCartSummary());
        $api->setLocale($api->getLocaleCode());

        $result = $api->getStandardCheckoutRequest();

        if ($order->getStore()->getBaseCurrencyCode() !== $order->getStore()->getCurrentCurrencyCode()) {
            $result['amount'] = sprintf('%.2f', $order->getStore()->convertPrice($result['amount']));
            $result['tax'] = sprintf('%.2f', $order->getStore()->convertPrice($result['tax']));
            $result['tax_cart'] = sprintf('%.2f', $order->getStore()->convertPrice($result['tax_cart']));
            $result['shipping'] = sprintf('%.2f', $order->getStore()->convertPrice($result['shipping']));
            $result['discount_amount'] = sprintf('%.2f', $order->getStore()->convertPrice($result['discount_amount']));
            $result['discount_amount_cart'] = sprintf('%.2f', $order->getStore()->convertPrice($result['discount_amount_cart']));
            for ($i = 1; isset($result['item_number_' . $i]); $i++) {
                $result['amount_' . $i] = sprintf('%.2f', $order->getStore()->convertPrice($result['amount_' . $i]));
            }
        }

        return $result;
    }

    public function isApplicableToQuote($quote, $checksBitMask)
    {
        if ($checksBitMask & self::CHECK_USE_FOR_COUNTRY) {
            if (!$this->canUseForCountry($quote->getBillingAddress()->getCountry())) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_USE_FOR_CURRENCY) {
            if (!$this->canUseForCurrency($quote->getStore()->getCurrentCurrencyCode())) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_USE_CHECKOUT) {
            if (!$this->canUseCheckout()) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_USE_FOR_MULTISHIPPING) {
            if (!$this->canUseForMultishipping()) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_USE_INTERNAL) {
            if (!$this->canUseInternal()) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_ORDER_TOTAL_MIN_MAX) {
            $total = $quote->getBaseGrandTotal();
            $minTotal = $this->getConfigData('min_order_total');
            $maxTotal = $this->getConfigData('max_order_total');
            if (!empty($minTotal) && $total < $minTotal || !empty($maxTotal) && $total > $maxTotal) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_RECURRING_PROFILES) {
            if (!$this->canManageRecurringProfiles() && $quote->hasRecurringItems()) {
                return false;
            }
        }
        if ($checksBitMask & self::CHECK_ZERO_TOTAL) {
            $total = $quote->getBaseSubtotal() + $quote->getShippingAddress()->getBaseShippingAmount();
            if ($total < 0.0001 && $this->getCode() != 'free'
                && !($this->canManageRecurringProfiles() && $quote->hasRecurringItems())
            ) {
                return false;
            }
        }
        return true;
    }

    private function _getAggregatedCartSummary()
    {
        if ($this->_config->lineItemsSummary) {
            return $this->_config->lineItemsSummary;
        }
        return Mage::app()->getStore($this->getStore())->getFrontendName();
    }
}