ControllerExtensionPaymentKlarnaCheckout::downloadSettlementFiles PHP Method

    public function downloadSettlementFiles()
    {
        $this->load->language('extension/payment/klarna_checkout');
        $this->load->model('extension/payment/klarna_checkout');
        $this->load->model('sale/order');
        $json = array();
        $error = array();
        $klarna_checkout_directory = DIR_UPLOAD . 'klarna_checkout/';
        if (isset($this->request->post['username'])) {
            $username = $this->request->post['username'];
        } else {
            $username = '';
        }
        if (isset($this->request->post['password'])) {
            $password = html_entity_decode($this->request->post['password']);
        } else {
            $password = '';
        }
        if (isset($this->request->post['order_status_id'])) {
            $order_status_id = $this->request->post['order_status_id'];
        } else {
            $order_status_id = false;
        }
        if (!$username || !$password || !$order_status_id) {
            $error[] = 'Please supply a username, password and order status';
        }
        if (!$error) {
            // Connect to the site via FTP
            $connection = ftp_connect('mft.klarna.com', '4001');
            $files = array();
            if ($connection) {
                $login = ftp_login($connection, $username, $password);
                if ($login) {
                    $files = ftp_nlist($connection, '.');
                    rsort($files);
                    if (!is_dir($klarna_checkout_directory)) {
                        mkdir($klarna_checkout_directory, 0777);
                    }
                    // Save all files to local
                    foreach (array_diff($files, array('.', '..')) as $file) {
                        if (!ftp_get($connection, $klarna_checkout_directory . $file, $file, FTP_BINARY)) {
                            $error[] = 'There was a problem saving one or more files';
                        }
                    }
                }
            }
        }
        $orders_to_process = array();
        $files = scandir($klarna_checkout_directory);
        if (!$error) {
            // Loop local files and process
            foreach (array_diff($files, array('.', '..')) as $file) {
                $handle = fopen($klarna_checkout_directory . $file, 'r');
                // Skip first 2 lines, use third as headings
                fgetcsv($handle);
                fgetcsv($handle);
                $headings = fgetcsv($handle);
                while ($data = fgetcsv($handle)) {
                    $row = array_combine($headings, $data);
                    if ($row['type'] == 'SALE') {
                        $order_id = $this->encryption->decrypt($row['merchant_reference1']);
                        $klarna_order_info = $this->model_extension_payment_klarna_checkout->getOrder($order_id);
                        $order_info = $this->model_sale_order->getOrder($order_id);
                        // Check if order exists in system, if it does, pass back to process
                        if ($klarna_order_info && $order_info && $order_info['payment_code'] == 'klarna_checkout' && $order_info['order_status_id'] != $order_status_id) {
                            $orders_to_process[] = $order_id;
                        }
                    }
                }
                fclose($handle);
            }
        }
        // Delete local files
        foreach (array_diff($files, array('.', '..')) as $file) {
            if (!unlink($klarna_checkout_directory . $file)) {
                $error[] = 'Cannot delete files';
            }
        }
        if ($error) {
            $orders_to_process = array();
        }
        $json['error'] = $error;
        $json['orders'] = $orders_to_process;
        $this->response->addHeader('Content-Type: application/json');
        $this->response->setOutput(json_encode($json));
    }