<?php
/**
 * 2007-2018 PrestaShop
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@prestashop.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade PrestaShop to newer
 * versions in the future. If you wish to customize PrestaShop for your
 * needs please refer to http://www.prestashop.com for more information.
 *
 *  @author    PrestaShop SA <contact@prestashop.com>
 *  @copyright 2007-2018 PrestaShop SA
 *  @license   http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 *  International Registered Trademark & Property of PrestaShop SA
 */

class ApiPaypalPlus
{
    /*     * ********************************************************* */
    /*     * ******************** CONNECT METHODS ******************** */
    /*     * ********************************************************* */

    public function __construct()
    {
        if (class_exists('Context')) {
            $this->context = Context::getContext();
        } else {
            global $smarty, $cookie;
            $this->context = new StdClass();
            $this->context->smarty = $smarty;
            $this->context->cookie = $cookie;
        }
    }

    protected function sendByCURL($url, $body, $http_header = false, $identify = false, $customRequest = false)
    {
        $ch = curl_init();

        if ($ch) {

            if ((int) Configuration::get('PAYPAL_SANDBOX') == 1) {
                curl_setopt($ch, CURLOPT_URL, 'https://api.sandbox.paypal.com'.$url);
            } else {
                curl_setopt($ch, CURLOPT_URL, 'https://api.paypal.com'.$url);
            }

            if ($identify) {
                curl_setopt($ch, CURLOPT_USERPWD, Configuration::get('PAYPAL_PLUS_CLIENT_ID').':'.Configuration::get('PAYPAL_PLUS_SECRET'));
            }

            if ($http_header) {
                curl_setopt($ch, CURLOPT_HTTPHEADER, $http_header);
            }
            if ($body) {
                if ($customRequest === false) {
                    curl_setopt($ch, CURLOPT_POST, true);
                } else {
                    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $customRequest);
                }

                if ($identify) {
                    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($body));
                } else {
                    curl_setopt($ch, CURLOPT_POSTFIELDS, $body);
                }

            }
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($ch, CURLOPT_HEADER, false);
            curl_setopt($ch, CURLOPT_TIMEOUT, 60);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            //curl_setopt($ch, CURLOPT_SSLVERSION, defined('CURL_SSLVERSION_TLSv1') ? CURL_SSLVERSION_TLSv1 : 1);
            curl_setopt($ch, CURLOPT_VERBOSE, false);

            $result = curl_exec($ch);
            curl_close($ch);
        }

        return $result;
    }

    public function getToken($url, $body)
    {


        $result = $this->sendByCURL($url, $body, false, true);

        /*
         * Init variable
         */
        $oPayPalToken = Tools::jsonDecode($result);

        if (isset($oPayPalToken->error)) {
            return false;
        } else {

            if ($this->context->cookie->paypal_access_token_time_max > time()) {
                return $this->context->cookie->paypal_access_token_access_token;
            }

            $time_max = time() + $oPayPalToken->expires_in;
            $access_token = $oPayPalToken->access_token;

            /*
             * Set Token in Cookie
             */
            $this->context->cookie->__set('paypal_access_token_time_max', $time_max);
            $this->context->cookie->__set('paypal_access_token_access_token', $access_token);
            $this->context->cookie->write();

            return $access_token;
        }
    }

    private function _createWebProfile()
    {

        $presentation = new stdClass();
        $presentation->brand_name = Configuration::get('PS_SHOP_NAME');
        $presentation->logo_image = Tools::getHttpHost(true).__PS_BASE_URI__.'img/logo.jpg';
        $presentation->locale_code = Tools::strtoupper(Language::getIsoById($this->context->language->id));
        $input_fields = new stdClass();
        $input_fields->allow_note = false;
        $input_fields->no_shipping = 1;
        $input_fields->address_override = 1;

        $flow_config = new stdClass();

        $webProfile = new stdClass();
        $webProfile->name = Configuration::get('PS_SHOP_NAME');
        $webProfile->presentation = $presentation;
        $webProfile->input_fields = $input_fields;
        $webProfile->flow_config = $flow_config;

        return $webProfile;
    }

    public function getWebProfile()
    {
        $accessToken = $this->getToken(URL_PPP_CREATE_TOKEN, array('grant_type' => 'client_credentials'));

        if ($accessToken) {

            $data = $this->_createWebProfile();

            $header = array(
                'Content-Type:application/json',
                'Authorization:Bearer '.$accessToken,
            );

            $result = Tools::jsonDecode($this->sendByCURL(URL_PPP_WEBPROFILE, Tools::jsonEncode($data), $header));
            if (isset($result->id)) {
                return $result->id;
            } else {

                $results = $this->getListProfile();

                foreach ($results as $result) {
                    if (isset($result->id) && $result->name == Configuration::get('PS_SHOP_NAME')) {
                        return $result->id;
                    }
                }

                return false;
            }
        }
    }

    public function getListProfile()
    {

        $accessToken = $this->getToken(URL_PPP_CREATE_TOKEN, array('grant_type' => 'client_credentials'));

        if ($accessToken) {

            $header = array(
                'Content-Type:application/json',
                'Authorization:Bearer '.$accessToken,
            );

            return Tools::jsonDecode($this->sendByCURL(URL_PPP_WEBPROFILE, false, $header));
        }
    }

    public function refreshToken()
    {
        if ($this->context->cookie->paypal_access_token_time_max < time()) {
            return $this->getToken(URL_PPP_CREATE_TOKEN, array('grant_type' => 'client_credentials'));
        } else {
            return $this->context->cookie->paypal_access_token_access_token;
        }
    }

    private function _createObjectPayment($customer, $cart)
    {
        /*
         * Init Variable
         */
        $oCurrency = new Currency($cart->id_currency);
        $address = new Address((int) $cart->id_address_invoice);

        $country = new Country((int) $address->id_country);
        $iso_code = $country->iso_code;

        if (version_compare(_PS_VERSION_, '1.5', '<')) {
            $totalShippingCostWithoutTax = $cart->getOrderShippingCost(null, false);
        } else {
            $totalShippingCostWithoutTax = $cart->getTotalShippingCost(null, false);
        }

        $totalCartWithTax = $cart->getOrderTotal(true);
        $totalCartWithoutTax = $cart->getOrderTotal(false);
        $total_tax = $totalCartWithTax - $totalCartWithoutTax;

        if ($cart->gift) {
            if (version_compare(_PS_VERSION_, '1.5.3.0', '>=')) {
                $giftWithoutTax = $cart->getGiftWrappingPrice(false);
            } else {
                $giftWithoutTax = (float) (Configuration::get('PS_GIFT_WRAPPING_PRICE'));
            }

        } else {
            $giftWithoutTax = 0;
        }

        $cartItems = $cart->getProducts();

        $shop_url = PayPal::getShopDomainSsl(true, true);

        /*
         * Création de l'obj à envoyer à Paypal
         */

        $state = new State($address->id_state);
        $shipping_address = new stdClass();
        $shipping_address->recipient_name = $address->alias;
        $shipping_address->type = 'residential';
        $shipping_address->line1 = $address->address1;
        $shipping_address->line2 = $address->address2;
        $shipping_address->city = $address->city;
        $shipping_address->country_code = $iso_code;
        $shipping_address->postal_code = $address->postcode;
        $shipping_address->state = ($state->iso_code == null) ? '' : $state->iso_code;
        $shipping_address->phone = $address->phone;

        $payer_info = new stdClass();
        $payer_info->email = '"'.$customer->email.'"';
        $payer_info->first_name = $address->firstname;
        $payer_info->last_name = $address->lastname;
        $payer_info->country_code = '"'.$iso_code.'"';
        $payer_info->shipping_address = array($shipping_address);

        $payer = new stdClass();
        $payer->payment_method = "paypal";
        //$payer->payer_info = $payer_info; // Objet set by PayPal

        $aItems = array();
        /* Item */
        foreach ($cartItems as $cartItem) {

            $item = new stdClass();
            $item->name = $cartItem['name'];
            $item->currency = $oCurrency->iso_code;
            $item->quantity = $cartItem['quantity'];
            //$item->price = number_format(round($cartItem['price_wt'], 2), 2);
            $item->price = number_format(round($cartItem['price'], 2), 2);
            $item->tax = number_format(round($cartItem['price_wt'] - $cartItem['price'], 2), 2);
            $aItems[] = $item;
            unset($item);
        }

        /* ItemList */
        $itemList = new stdClass();
        $itemList->items = $aItems;

        /* Detail */
        $details = new stdClass();
        $details->shipping = number_format($totalShippingCostWithoutTax, 2);
        $details->tax = number_format($total_tax, 2);
        $details->handling_fee = number_format($giftWithoutTax, 2);
        $details->subtotal = number_format($totalCartWithoutTax - $totalShippingCostWithoutTax - $giftWithoutTax, 2);

        /* Amount */
        $amount = new stdClass();
        $amount->total = number_format($totalCartWithTax, 2);
        $amount->currency = $oCurrency->iso_code;
        $amount->details = $details;

        /* Transaction */
        $transaction = new stdClass();
        $transaction->amount = $amount;
        $transaction->item_list = $itemList;
        $transaction->description = "Payment description";
        $transaction->notify_url = $shop_url.'/modules/paypal/ipn.php';

        /* Redirecte Url */

        $redirectUrls = new stdClass();
        $redirectUrls->cancel_url = $shop_url._MODULE_DIR_.'paypal/paypal_plus/submit.php?id_cart='.(int) $cart->id;
        $redirectUrls->return_url = $shop_url._MODULE_DIR_.'paypal/paypal_plus/submit.php?id_cart='.(int) $cart->id;

        /* Payment */
        $payment = new stdClass();
        $payment->transactions = array($transaction);
        $payment->payer = $payer;
        $payment->intent = "sale";
        if (Configuration::get('PAYPAL_WEB_PROFILE_ID')) {
            $payment->experience_profile_id = Configuration::get('PAYPAL_WEB_PROFILE_ID');
        }
        $payment->redirect_urls = $redirectUrls;
        return $payment;
    }

    protected function createPayment($customer, $cart, $access_token)
    {

        $data = $this->_createObjectPayment($customer, $cart);

        $header = array(
            'Content-Type:application/json',
            'Authorization:Bearer '.$access_token,
        );

        $result = $this->sendByCURL(URL_PPP_CREATE_PAYMENT, Tools::jsonEncode($data), $header);
        return $result;
    }
}
