get_signed_url() public method

public get_signed_url ( string $action = '' ) : string
$action string
return string
 /**
  * Process the request
  *  - Find purchase data
  *  - Generate response*
  * @link http://developer.helpscout.net/custom-apps/style-guide/ HelpScout Custom Apps Style Guide
  * @return string
  */
 private function build_response_html()
 {
     if (count($this->customer_payments) === 0) {
         // No purchase data was found
         return sprintf('<p>No payments founds for %s.</p>', '<strong>' . join('</strong> or <strong>', $this->customer_emails) . '</strong>');
     }
     // build array of purchases
     $orders = array();
     foreach ($this->customer_payments as $payment) {
         $order = array();
         $order['payment_id'] = $payment->ID;
         $order['date'] = $payment->post_date;
         $order['amount'] = edd_get_payment_amount($payment->ID);
         $order['status'] = $payment->post_status;
         $order['payment_method'] = $this->get_payment_method($payment->ID);
         $order['downloads'] = array();
         $order['resend_receipt_link'] = '';
         $order['is_renewal'] = false;
         $order['is_completed'] = $payment->post_status === 'publish';
         // do stuff for completed orders
         if ($payment->post_status === 'publish') {
             $args = array('payment_id' => (string) $order['payment_id']);
             $request = new Request($args);
             $order['resend_receipt_link'] = $request->get_signed_url('resend_purchase_receipt');
         }
         // find purchased Downloads.
         $order['downloads'] = (array) edd_get_payment_meta_downloads($payment->ID);
         // for each download, find license + sites
         if (function_exists('edd_software_licensing')) {
             /**
              * @var EDD_Software_Licensing
              */
             $licensing = edd_software_licensing();
             // was this order a renewal?
             $order['is_renewal'] = (string) get_post_meta($payment->ID, '_edd_sl_is_renewal', true) !== '';
             if ($order['is_completed']) {
                 foreach ($order['downloads'] as $key => $download) {
                     // only proceed if this download has EDD Software Licensing enabled
                     if ('' === (string) get_post_meta($download['id'], '_edd_sl_enabled', true)) {
                         continue;
                     }
                     // find license that was given out for this download purchase
                     $license = $licensing->get_license_by_purchase($payment->ID, $download['id']);
                     if (is_object($license)) {
                         $key = (string) get_post_meta($license->ID, '_edd_sl_key', true);
                         // add support for "lifetime" licenses
                         if (method_exists($licensing, 'is_lifetime_license') && $licensing->is_lifetime_license($license->ID)) {
                             $is_expired = false;
                         } else {
                             $expires = (string) get_post_meta($license->ID, '_edd_sl_expiration', true);
                             $is_expired = $expires < time();
                         }
                         $order['downloads'][$key]['license'] = array('limit' => 0, 'key' => $key, 'is_expired' => $is_expired, 'sites' => array());
                         // look-up active sites if license is not expired
                         if (!$is_expired) {
                             // get license limit
                             $order['downloads'][$key]['license']['limit'] = $licensing->get_license_limit($download['id'], $license->ID);
                             $sites = (array) $licensing->get_sites($license->ID);
                             foreach ($sites as $site) {
                                 $args = array('license_id' => (string) $license->ID, 'site_url' => $site);
                                 // make sure site url is prefixed with "http://"
                                 $site_url = strpos($site, '://') !== false ? $site : 'http://' . $site;
                                 $request = new Request($args);
                                 $order['downloads'][$key]['license']['sites'][] = array('url' => $site_url, 'deactivate_link' => $request->get_signed_url('deactivate_site_license'));
                             }
                         }
                         //endif not expired
                     }
                     // endif license found
                 }
                 // end foreach downloads
             }
             // endif order completed
         }
         $orders[] = $order;
     }
     // build HTML output
     $html = '';
     foreach ($orders as $order) {
         $html .= str_replace('\\t', '', $this->order_row($order));
     }
     return $html;
 }