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<?php

/**
 * Plugin Name: Bancard Payment Gateway for Woocommerce
 * Plugin URI: http://imroca.com
 * Description: This plugin set Bancard integration on woocommerce.
 * Version: 1.0.0
 * Author: Ignacio Rojas
 * Author URI: http://ignacio.imroca.com
 * License: GPL2
 */

if (!defined('ABSPATH')) {
    exit; // Exit if accessed directly
}

add_action('plugins_loaded', 'init_bancard_gateway_class', 0);

function init_bancard_gateway_class()
{
    $log = new WC_Logger();

if (!class_exists('WC_Payment_Gateway')) {
        return;
    }

/**
     * WC_Gateway_Bancard Class.
     */
    class WC_Gateway_Bancard extends WC_Payment_Gateway
    {
        /** @var bool Whether or not logging is enabled */
        public static $log_enabled = false;

/** @var WC_Logger Logger instance */
        public static $log = false;

/**
         * Constructor for the gateway.
         */
        public function __construct()
        {
            $this->id                 = 'bancard';
            $this->has_fields         = false;
            $this->order_button_text  = __('Proceder a Bancard', 'woocommerce');
            $this->method_title       = __('Bancard', 'woocommerce');
            $this->method_description = sprintf(__('Bancard standard sends customers to Bancard to enter their payment information. Bancard IPN requires fsockopen/cURL support to update order statuses after payment. Check the %ssystem status%s page for more details.', 'woocommerce'), '<a href="' . admin_url('admin.php?page=wc-status') . '">', '</a>');
            $this->supports           = array(
                'products',
                'refunds'
            );

// Load the settings.
            $this->init_form_fields();
            $this->init_settings();

// Define user set variables.
            $this->title          = $this->get_option('title');
            $this->description    = $this->get_option('description');
            $this->testmode       = 'yes' === $this->get_option('testmode', 'no');
            $this->debug          = 'yes' === $this->get_option('debug', 'no');
            $this->email          = $this->get_option('email');
            $this->receiver_email = $this->get_option('receiver_email', $this->email);
            $this->identity_token = $this->get_option('identity_token');

self::$log_enabled    = $this->debug;

add_action('woocommerce_update_options_payment_gateways_' . $this->id, array($this, 'process_admin_options'));
            add_action('woocommerce_thankyou_bancard', array($this, 'thankyou'));
            add_action('woocommerce_api_bancard_confirm', array($this, 'confirm'));
            add_action('woocommerce_api_process_refund', array($this, 'process_refund'));

if (!$this->is_valid_for_use()) {
                $this->enabled = 'no';
            }
        }

/**
         * Check if this gateway is enabled and available in the user's country.
         * @return bool
         */
        public function is_valid_for_use()
        {
            return in_array(get_woocommerce_currency(), apply_filters('woocommerce_bancard_supported_currencies', array('PYG')));
        }

public function confirm()
        {
            global $wp;
            // Accept only POST.
            if ($_SERVER['REQUEST_METHOD'] != "POST") {
                status_header(404);
                exit;
            }
            // Parse posted data.
            try {
                $post = json_decode(file_get_contents('php://input'));
            } catch (Exception $e) {
                status_header(403);
                exit;
            }

// Is empty?
            if (empty($post)) {
                status_header(403);
                exit;
            }

// Get order.
			try {
				$order = wc_get_order($post->operation->shop_process_id);
			} catch (Exception $e) {
				status_header(200);
				exit;
			}

if(!$order) {
				status_header(200);
				exit;
			}

$amount = number_format($order->get_total(), 2, ".", "");

if ($amount !== $post->operation->amount) {
                status_header(403);
                exit;
            }

$order->add_order_note($post->operation->response_description);
            $order->payment_complete($post->operation->ticket_number);
            $order->update_status('completed');

header('Content-type: application/json');
            echo json_encode([
                "status" => "success",
                "message" => "Su pago ha sido confirmado y completado su pedido",
                "developer_message" => "Operation confirmed"]);
            exit;
        }

public function thankyou()
        {
            // If you want to add something, add it here...
        }

/**
         * Logging method.
         * @param string $message
         */

public static function log($message)
        {
            if (self::$log_enabled) {
                if (empty(self::$log)) {
                    self::$log = new WC_Logger();
                }
                self::$log->add('bancard', $message);
            }
        }

/**
         * Admin Panel Options.
         * - Options for bits like 'title' and availability on a country-by-country basis.
         *
         * @since 1.0.0
         */
        public function admin_options()
        {
            parent::admin_options();
        }

/**
         * Initialise Gateway Settings Form Fields.
         */
        public function init_form_fields()
        {
            $this->form_fields = include('includes/settings-bancard.php');
        }

/**
         * Get the transaction URL.
         * @param  WC_Order $order
         * @return string
         */
        // public function get_transaction_url($order)
        // {
        //     if ($this->testmode) {
        //         $this->view_transaction_url = 'https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
        //     } else {
        //         $this->view_transaction_url = 'https://www.paypal.com/cgi-bin/webscr?cmd=_view-a-trans&id=%s';
        //     }
        //     return parent::get_transaction_url($order);
        // }

/**
         * Process the payment and return the result.
         * @param  int $order_id
         * @return array
         */
        public function process_payment($order_id)
        {
            include('includes/Bancard/autoload.php');

$order = wc_get_order($order_id);

$amount = number_format($order->get_total(), 2, ".", "");

$data = [
                'shop_process_id'   => $order->id,
                'amount'            => $amount,
                'currency'          => 'PYG',
                'additional_data'   => '',
                'description'       => 'Producto de Servilibro',
                'private_key'       => $this->get_option('api_private_key'),
                'public_key'        => $this->get_option('api_public_key'),
                'return_url'        => $this->get_return_url($order),
                'cancel_url'        => $order->get_cancel_order_url_raw()
            ];

if ($this->testmode == 'yes') {
                $env = Bancard\Bancard\Core\Environments::STAGING_URL;
            } else {
                $env = Bancard\Bancard\Core\Environments::PRODUCTION_URL;
            }

$singlebuy = Bancard\Bancard\Operations\SingleBuy\SingleBuy::init($data, $env)->send();

WC()->cart->empty_cart();

return array(
                'result'   => 'success',
                'redirect' => $singlebuy->redirect_to
            );
        }

/**
         * Get gateway icon.
         *
         * @access public
         * @return string
         */
        public function get_icon()
        {
            $icon  = '<img src="' . WC_HTTPS::force_https_url(plugin_dir_url(__FILE__) . 'assets/images/icon.png') . '" alt="Bancard" />';
            return apply_filters('woocommerce_gateway_icon', $icon, $this->id);
        }

/**
         * Process a refund if supported.
         * @param  int    $order_id
         * @param  float  $amount
         * @param  string $reason
         * @return bool True or false based on success, or a WP_Error object
         */
        public function process_refund($order_id, $amount = null, $reason = '')
        {
            $order = wc_get_order($order_id);

include_once('includes/Bancard/autoload.php');

$data = [
                'shop_process_id'   => $order->id,
                'private_key'       => $this->get_option('api_private_key'),
                'public_key'        => $this->get_option('api_public_key')
            ];

try {
                $rollback = Bancard\Bancard\Operations\SingleBuy\Rollback::init($data, $env)->send();
            } catch (Exception $e) {
                return new WP_Error('error', $e->getMessage());
            }

$order->add_order_note(__('Refunded amount', 'woocommerce'));
            return true;
        }
    }

add_filter('woocommerce_payment_gateways', 'woocommerce_add_bancard_gateway');

function woocommerce_add_bancard_gateway($methods)
    {
        $methods[] = 'WC_Gateway_Bancard';
        return $methods;

}