<?php

class App_Service_Payment_PayPalExpressCheckout extends App_Service_Payment_Abstract
{
    const SET_EXPRESS_CHECKOUT_TYPE         = 'SET_EXPRESS_CHECKOUT';
    const GET_EXPRESS_CHECKOUT_DETAILS_TYPE = 'GET_EXPRESS_CHECKOUT_DETAILS';
    const DO_EXPRESS_CHECKOUT_PAYMENT_TYPE  = 'DO_EXPRESS_CHECKOUT_PAYMENT';
    const REFUND_TRANSACTION                = 'REFUND_TRANSACTION';
    const DEFAULT_PAYMENT_TYPE              = self::SET_EXPRESS_CHECKOUT_TYPE;
    const DEFAULT_CURRENCY                  = 'USD';

    protected $_paymentType = self::DEFAULT_PAYMENT_TYPE;
    protected $_logFileName = 'payPalExpressCheckout';
    protected $_paymentConfigAlias = 'Service_Payment_PayPalExpressCheckout';

    /** @var Qs_Form */
    protected $_invoice;

    protected $_expressCheckoutDetails;
    protected $_response;

    public function __construct($options = [])
    {
        $invoice = Qs_Array::get($options, 'data[invoice]');
        if ($invoice) {
            $this->_setInvoice($invoice);
        }

        parent::__construct($options);

        if ($this->getPaymentType() == self::SET_EXPRESS_CHECKOUT_TYPE) {
            $this->_setExpressCheckout();
        } else if ($this->getPaymentType() == self::GET_EXPRESS_CHECKOUT_DETAILS_TYPE) {
            $this->_getExpressCheckoutDetails();
        } else if ($this->getPaymentType() == self::DO_EXPRESS_CHECKOUT_PAYMENT_TYPE) {
            $this->_doExpressCheckoutPayment();
        } else if ($this->getPaymentType() == self::REFUND_TRANSACTION) {
            $this->_refundTransaction();
        } else if ($this->getPaymentType() == self::VERIFY_IPN_TYPE) {
            $this->_verifyIpn();
        }

        return $this;
    }

    protected function _setExpressCheckout()
    {
        $data = $this->getOption('data');

        $currencyCode = (!empty($data['currency'])) ? $data['currency'] : 'USD';

        $params = [
            'TRXTYPE'              => 'S',
            'ACTION'               => 'S',
            'METHOD'               => 'SetExpressCheckout',
            'PAYMENTREQUEST_0_AMT' => $data['amount'],
            'CURRENCYCODE'         => $currencyCode,
            'RETURNURL'            => $data['returnUrl'],
            'CANCELURL'            => $data['cancelUrl'],

        ];

        if ($data['subtotal']) {
            $params['PAYMENTREQUEST_0_ITEMAMT'] = $data['subtotal'];
        }
        if ($data['shipping']) {
            $params['PAYMENTREQUEST_0_SHIPPINGAMT'] = $data['shipping'];
        }
        if ($data['tax']) {
            $params['PAYMENTREQUEST_0_TAXAMT'] = $data['tax'];
        }
        if ($data['handling']) {
            $params['PAYMENTREQUEST_0_HANDLINGAMT'] = $data['handling'];
        }

        $discountSum = Zend_Locale_Math::Div(Zend_Locale_Math::Add($data['promo'], $data['giftCard'], 4), -1, 4);
        $discountSum = Zend_Locale_Math::round($discountSum, 2);

        if ($data['custom']) {
            $params = array_merge($params, $data['custom']);
        }

        $itemList = $this->_getItemList();

        //додаєм дотанковий айтем з діскаунтом (сума мінусова)
        if ($discountSum < 0) {
            $itemList[] = [
                'L_PAYMENTREQUEST_0_AMT'  => $discountSum,
                'L_PAYMENTREQUEST_0_NAME' => 'Discount',
                'L_PAYMENTREQUEST_0_QTY'  => 1,
            ];
        }

        foreach ($itemList as $itemKey => $item) {
            foreach ($item as $key => $value) {
                $params[$key . $itemKey] = $value;
            }
        }

        $response = $this->_sendRequest($params);

        if ($response['ACK'] == 'Failure' || !isset($response['TOKEN'])) {
            $this->_response = new App_Service_Payment_PayPalExpressCheckout_Response($response);
        } else {
            $location = $this->_getPaymentConfig('actionUrl') . '?cmd=_express-checkout&token=' . $response['TOKEN'];
            header('Location: ' . $location);
            die('FORWARD');
        }

        return $this;
    }

    protected function _refundTransaction()
    {
        $data = $this->getOption('data');
        $params = [
            'METHOD'        => 'RefundTransaction',
            'TRANSACTIONID' => $data['transactionId'],
        ];
        $response = $this->_sendRequest($params);
        $this->_response = new App_Service_Payment_PayPalExpressCheckout_Response($response);
        return $this;
    }

    protected function _getExpressCheckoutDetails()
    {
        $data = $this->getOption('data');
        $params = [
            'METHOD' => 'GetExpressCheckoutDetails',
            'TOKEN'  => $data['token'],
        ];
        $response = $this->_sendRequest($params);
        $this->_response = new App_Service_Payment_PayPalExpressCheckout_Response($response);
        if ($response['ACK'] == 'Success') {
            $this->_expressCheckoutDetails = $response;
        } else {
            $this->_expressCheckoutDetails = [
                'status' => 'FAIL',
                'msg'    => $response['L_LONGMESSAGE0'],
            ];
        }
        return $this;
    }

    protected function _doExpressCheckoutPayment()
    {
        $data = $this->getOption('data');
        $params = [
            'METHOD'                         => 'DoExpressCheckoutPayment',
            'TOKEN'                          => $data['token'],
            'PAYERID'                        => $data['payerId'],
            'PAYMENTREQUEST_0_AMT'           => $data['amount'],
            'PAYMENTREQUEST_0_CURRENCYCODE'  => $data['currency'],
            'PAYMENTREQUEST_0_PAYMENTACTION' => 'Sale',
            'PAYMENTREQUEST_0_NOTIFYURL'     => $this->_getPaymentConfig('notifyUrl'),
        ];
        $response = $this->_sendRequest($params);
        $this->_response = new App_Service_Payment_PayPalExpressCheckout_Response($response);
        if ($response['ACK'] == 'Success') {
            $this->_expressCheckoutDetails = $response;
        } else {
            $this->_expressCheckoutDetails = [
                'status' => 'FAIL',
                'msg'    => $response['L_LONGMESSAGE0'],
            ];
        }
        return $this;
    }

    protected function _sendRequest($params)
    {
        $params['SIGNATURE'] = $this->_getPaymentConfig('signature');
        $params['VERSION'] = $this->_getPaymentConfig('version');
        if ($this->_getPaymentConfig('writeLog')) {
            $logData = ['url' => $this->_getPaymentConfig('apiUri'), 'type' => $this->getPaymentType()] + $params;
            $this->_writeLog($logData);
        }
        $params['USER'] = $this->_getPaymentConfig('user');
        $params['PWD'] = $this->_getPaymentConfig('pwd');

        $c = curl_init();
        curl_setopt_array($c, [
            CURLOPT_URL            => $this->_getPaymentConfig('apiUri'),
            CURLOPT_FAILONERROR    => true,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_FOLLOWLOCATION => true,
            CURLOPT_POST           => true,
            CURLOPT_POSTFIELDS     => http_build_query($params),
        ]);

        $result = curl_exec($c);
        $resultArray = [];
        parse_str($result, $resultArray);
        if ($this->_getPaymentConfig('writeLog')) {
            $this->_writeLog(['type' => $this->getPaymentType()] + $resultArray);
        }
        if (!$result) {
            $resultArray = ['ERROR' => curl_error($c)];
        }
        curl_close($c);
        return $resultArray;
    }

    public function verifyOrder($orderId, $orderTotal = null)
    {
        $orderConfig = $this->_getPaymentConfig('order');
        $result = true;
        if ($orderConfig['enable']) {
            $orderClass = new $orderConfig['class']();
            $checkout = new App_ECommerce_Checkout_Obj();
            $transactionId = $checkout->getTransactionId();
            $checkout->saveTransactionId($transactionId);
            if (!empty($transactionId)) {
                $checkout->saveTransactionId($transactionId);
                $verifyMethod = $orderConfig['verifyMethod'];
                $options = ['invoice' => $orderId, 'total' => $orderTotal, 'transactionId' => $transactionId];
                $options += $this->getResponse()->getData();
                $result = $orderClass->{$verifyMethod}($options);
            } else {
                $result = false;
            }
        }
        if ($this->_getPaymentConfig('writeLog')) {
            $this->_writeLog(['type' => 'verifyOrder', 'orderId' => $orderId, 'result' => $result]);
        }
        return $result;
    }

    public function updateOrder($orderId)
    {
        $orderConfig = $this->_getPaymentConfig('order');
        $result = true;
        if ($orderConfig['enable']) {
            $orderClass = new $orderConfig['class']();
            $checkout = new App_ECommerce_Checkout_Obj();
            $transactionId = $checkout->getTransactionId();
            $checkout->saveTransactionId($transactionId);
            $updateMethod = $orderConfig['updateMethod'];
            $options = ['invoice' => $orderId, 'transactionId' => $transactionId] + $this->getResponse()->getData();
            $result = $orderClass->{$updateMethod}($options);
        }
        if ($this->_getPaymentConfig('writeLog')) {
            $this->_writeLog(['type' => 'updateOrder', 'orderId' => $orderId, 'result' => $result]);
        }
        return $result;
    }

    protected function _setInvoice($invoice)
    {
        $this->_invoice = $invoice;
        return $this;
    }

    /** @return App_Service_Payment_PayPalExpressCheckout_Response */
    public function getResponse()
    {
        return $this->_response;
    }
}