Custom Plugin integration with API calls

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Each of the products on your WP E-commerce which use the WordPress E-Commerce Software License Management software will need to contain a code to make connection with the server. Certain variables or constants need to be set as they appear within the product server admin:

wordpress-wp-ecommerce-product-software-license-admin-metabox

Per this example the code which will be inserted within the plugin should appear like the following:

define('APTO_APP_API_URL',      'http://YourDomainWhereSoftwareManagement.com/index.php'); 

define('APTO_PRODUCT_ID',           'APTO');
define('APTO_SECRET_KEY',           '*#ioK@u4d*&#1');
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
define('APTO_INSTANCE',             str_replace($protocol, "", get_bloginfo('wpurl')));

You should observer the concordance between the data on the plugin code and the product on the server

The code above need to be inserted before any API calls.
A simple activation calls will looks like this:

$args = array(
                    'sl_action'         => 'activate',
                    'licence_key'       => $license_key,
                    'product_id'        => APTO_PRODUCT_ID,
                    'secret_key'        => APTO_SECRET_KEY,
                    'sl_instance'          => APTO_INSTANCE
                );
$request_uri    = APTO_APP_API_URL . '?' . http_build_query( $args );
$data           = wp_remote_get( $request_uri );

if(is_wp_error( $data ) || $data['response']['code'] != 200)
    {
        //there was a problem establishing a connection to the API server
    }

$data_body = json_decode($data['body']);
if(isset($data_body->status))
    {
        if($data_body->status == 'success' && $data_body->status_code == 's200')
            {
                //the license is active and the software is active
                //doing further actions like saving the license and allow the plugin to run

            }
            else
            {
                //there was a problem activating the license
            }
    }
    else
    {
        //there was a problem establishing a connection to the API server
    }
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