<?php
class ControllerExtensionPaymentSecureTradingPp extends Controller {

    public function index() {
        $this->load->model('checkout/order');
        $this->load->model('localisation/country');
        $this->load->model('localisation/zone');
        $this->load->language('extension/payment/securetrading_pp');

        $order_info = $this->model_checkout_order->getOrder($this->session->data['order_id']);

        if ($order_info) {
            $data['order_info'] = $order_info;
            $data['site_reference'] = $this->config->get('securetrading_pp_site_reference');
            $data['parent_css'] = $this->config->get('securetrading_pp_parent_css');
            $data['child_css'] = $this->config->get('securetrading_pp_child_css');
            $data['currency'] = $order_info['currency_code'];
            $data['total'] = $this->currency->format($order_info['total'], $order_info['currency_code'], $order_info['currency_value'], false);
            $data['settle_due_date'] = date('Y-m-d', strtotime(date('Y-m-d') . ' +' . $this->config->get('securetrading_pp_settle_due_date') . ' days'));
            $data['settle_status'] = $this->config->get('securetrading_pp_settle_status');

            $payment_country = $this->model_localisation_country->getCountry($order_info['payment_country_id']);
            $payment_zone = $this->model_localisation_zone->getZone($order_info['payment_zone_id']);

            $shipping_country = $this->model_localisation_country->getCountry($order_info['shipping_country_id']);
            $shipping_zone = $this->model_localisation_zone->getZone($order_info['shipping_zone_id']);

            if ($payment_country['iso_code_3'] == 'USA') {
                $data['billing_county'] = $payment_zone['code'];
            } else {
                $data['billing_county'] = $order_info['payment_zone'];
            }

            if (isset($shipping_country['iso_code_3']) && $shipping_country['iso_code_3'] == 'USA') {
                $data['shipping_county'] = $shipping_zone['code'];
            } else {
                $data['shipping_county'] = $order_info['shipping_zone'];
            }

            if (!isset($shipping_country['iso_code_2'])) {
                $shipping_country['iso_code_2'] = $payment_country['iso_code_2'];
            }

            $data['payment_country'] = $payment_country;
            $data['shipping_country'] = $shipping_country;

            if ($this->config->get('securetrading_pp_site_security_status')) {
                $data['site_security'] = hash('sha256', $order_info['currency_code'] . $data['total'] . $data['site_reference'] . $data['settle_status'] . $data['settle_due_date'] . $order_info['order_id'] . $this->config->get('securetrading_pp_site_security_password'));
            } else {
                $data['site_security'] = false;
            }

            $cards = array(
                'AMEX'            => 'American Express',
                'VISA'            => 'Visa',
                'DELTA'           => 'Visa Debit',
                'ELECTRON'        => 'Visa Electron',
                'PURCHASING'      => 'Visa Purchasing',
                'VPAY'            => 'V Pay',
                'MASTERCARD'      => 'MasterCard',
                'MASTERCARDDEBIT' => 'MasterCard Debit',
                'MAESTRO'         => 'Maestro',
                'PAYPAL'          => 'PayPal',
            );

            $data['cards'] = array();

            foreach ($cards as $key => $value) {
                if (in_array($key, $this->config->get('securetrading_pp_cards_accepted'))) {
                    $data['cards'][$key] = $value;
                }
            }

            $data['button_confirm'] = $this->language->get('button_confirm');
            $data['text_payment_details'] = $this->language->get('text_payment_details');
            $data['entry_card_type'] = $this->language->get('entry_card_type');

            return $this->load->view('extension/payment/securetrading_pp', $data);
        }
    }

    public function ipn() {
        $this->load->model('checkout/order');
        $this->load->model('extension/payment/securetrading_pp');
        $this->load->language('extension/payment/securetrading_pp');

        $keys = array_keys($this->request->post);
        sort($keys);

        $keys_ignore = array( 'notificationreference', 'responsesitesecurity' );

        $string_to_hash = '';

        foreach ($keys as $key) {
            if (!in_array($key, $keys_ignore)) {
                $string_to_hash .= $this->request->post[$key];
            }
        }

        $string_to_hash .= $this->config->get('securetrading_pp_notification_password');

        if (hash_equals(hash('sha256', $string_to_hash), $this->request->post['responsesitesecurity']) && $this->request->post['sitereference'] == $this->config->get('securetrading_pp_site_reference')) {
            $order_info = $this->model_checkout_order->getOrder($this->request->post['orderreference']);

            if ($order_info) {
                $order_total = $this->currency->format($order_info['total'], $order_info['currency_code'], $order_info['currency_value'], false);

                if ($order_total == $this->request->post['mainamount'] && $order_info['currency_code'] == $this->request->post['currencyiso3a'] && $order_info['payment_code'] == 'securetrading_pp') {
                    $status_code_mapping = array(
                        0 => $this->language->get('text_not_given'),
                        1 => $this->language->get('text_not_checked'),
                        2 => $this->language->get('text_match'),
                        4 => $this->language->get('text_not_match'),
                    );
                    $shipping_country = $this->model_extension_payment_securetrading_pp->getCountry($this->request->post['customercountryiso2a']);
                    $payment_country = $this->model_extension_payment_securetrading_pp->getCountry($this->request->post['billingcountryiso2a']);

                    $order_info['payment_firstname'] = $this->request->post['billingfirstname'];
                    $order_info['payment_lastname'] = $this->request->post['billinglastname'];
                    $order_info['payment_address_1'] = $this->request->post['billingpremise'];
                    $order_info['payment_address_2'] = $this->request->post['billingstreet'];
                    $order_info['payment_city'] = $this->request->post['billingtown'];
                    $order_info['payment_zone'] = $this->request->post['billingcounty'];
                    $order_info['payment_zone_id'] = 0;
                    $order_info['payment_country'] = $payment_country['name'];
                    $order_info['payment_country_id'] = $payment_country['country_id'];
                    $order_info['payment_postcode'] = $this->request->post['billingpostcode'];

                    $order_info['shipping_firstname'] = $this->request->post['customerfirstname'];
                    $order_info['shipping_lastname'] = $this->request->post['customerlastname'];
                    $order_info['shipping_address_1'] = $this->request->post['customerpremise'];
                    $order_info['shipping_address_2'] = $this->request->post['customerstreet'];
                    $order_info['shipping_city'] = $this->request->post['customertown'];
                    $order_info['shipping_zone'] = $this->request->post['customercounty'];
                    $order_info['shipping_zone_id'] = 0;
                    $order_info['shipping_country'] = $shipping_country['name'];
                    $order_info['shipping_country_id'] = $shipping_country['country_id'];
                    $order_info['shipping_postcode'] = $this->request->post['customerpostcode'];

                    $this->model_extension_payment_securetrading_pp->editOrder($order_info['order_id'], $order_info);

                    $postcode_status = $this->request->post['securityresponsepostcode'];
                    $security_code_status = $this->request->post['securityresponsesecuritycode'];
                    $address_status = $this->request->post['securityresponseaddress'];

                    $message = sprintf($this->language->get('text_postcode_check'), $status_code_mapping[$postcode_status]) . "\n";
                    $message .= sprintf($this->language->get('text_security_code_check'), $status_code_mapping[$security_code_status]) . "\n";
                    $message .= sprintf($this->language->get('text_address_check'), $status_code_mapping[$address_status]) . "\n";

                    if (isset($this->request->post['transactionreference'])) {
                        $transactionreference = $this->request->post['transactionreference'];
                    } else {
                        $transactionreference = '';
                    }
                    $this->model_extension_payment_securetrading_pp->addReference($order_info['order_id'], $transactionreference);

                    if ($this->request->post['errorcode'] == '0') {
                        $order_status_id = $this->config->get('securetrading_pp_order_status_id');

                        $this->model_extension_payment_securetrading_pp->confirmOrder($order_info['order_id'], $order_status_id);
                        $this->model_extension_payment_securetrading_pp->updateOrder($order_info['order_id'], $order_status_id, $message);
                    } elseif ($this->request->post['errorcode'] == '70000') {
                        $order_status_id = $this->config->get('securetrading_pp_declined_order_status_id');

                        $this->model_extension_payment_securetrading_pp->updateOrder($order_info['order_id'], $order_status_id, $message);
                    }
                }
            }
        }
    }

}