VaultPress::ui_load PHP Method

    function ui_load()
    {
        if (!current_user_can('manage_options')) {
            return;
        }
        // run code that might be updating the registration key
        if (isset($_POST['action']) && 'register' == $_POST['action']) {
            check_admin_referer('vaultpress_register');
            // reset the connection info so messages don't cross
            $this->clear_connection();
            // if registering via Jetpack, get a key...
            if (isset($_POST['key_source']) && 'jetpack' === $_POST['key_source']) {
                $registration_key = $this->register_via_jetpack();
                if (is_wp_error($registration_key)) {
                    $this->update_option('connection_error_code', -2);
                    $this->update_option('connection_error_message', sprintf(__('<strong>Failed to register VaultPress via Jetpack</strong>: %s. If you&rsquo;re still having issues please <a href="%1$s">contact the VaultPress&nbsp;Safekeepers</a>.', 'vaultpress'), esc_html($registration_key->get_error_message()), 'http://vaultpress.com/contact/'));
                    wp_redirect(admin_url('admin.php?page=vaultpress&error=true'));
                    exit;
                }
            } else {
                $registration_key = trim($_POST['registration_key']);
            }
            if (empty($registration_key)) {
                $this->update_option('connection_error_code', 1);
                $this->update_option('connection_error_message', sprintf(__('<strong>That\'s not a valid registration key.</strong> Head over to the <a href="%1$s" title="Sign in to your VaultPress Dashboard">VaultPress&nbsp;Dashboard</a> to find your key.', 'vaultpress'), 'https://dashboard.vaultpress.com/'));
                wp_redirect(admin_url('admin.php?page=vaultpress&error=true'));
                exit;
            }
            // try to register the plugin
            $nonce = wp_create_nonce('vp_register_' . $registration_key);
            $args = array('registration_key' => $registration_key, 'nonce' => $nonce);
            $response = $this->contact_service('register', $args);
            // we received an error from the VaultPress servers
            if (!empty($response['faultCode'])) {
                $this->update_option('connection_error_code', $response['faultCode']);
                $this->update_option('connection_error_message', $response['faultString']);
                wp_redirect(admin_url('admin.php?page=vaultpress&error=true'));
                exit;
            }
            // make sure the returned data looks valid
            if (empty($response['key']) || empty($response['secret']) || empty($response['nonce']) || $nonce != $response['nonce']) {
                $this->update_option('connection_error_code', 1);
                $this->update_option('connection_error_message', sprintf(__('There was a problem trying to register your subscription. Please try again. If you&rsquo;re still having issues please <a href="%1$s">contact the VaultPress&nbsp;Safekeepers</a>.', 'vaultpress'), 'http://vaultpress.com/contact/'));
                wp_redirect(admin_url('admin.php?page=vaultpress&error=true'));
                exit;
            }
            // need to update these values in the db so the servers can try connecting to the plugin
            $this->update_option('key', $response['key']);
            $this->update_option('secret', $response['secret']);
            if ($this->check_connection(true)) {
                wp_redirect(admin_url('admin.php?page=vaultpress'));
                exit;
            }
            // reset the key and secret
            $this->update_option('key', '');
            $this->update_option('secret', '');
            wp_redirect(admin_url('admin.php?page=vaultpress&error=true'));
            exit;
        }
    }