Module addon on activate hook

[DeuxK]

Hi,

I am developing a small module that would create an additional FTP user with a directory dedicated this user. For the creation of the module, everything is fine. By cons, for hooks, I'm sure of nothing! I activated the addon after the creation of my hooks.php. I would like to know if I do the right thing. Here is the code:

add_hook('AddonActivated', 1, function($vars) {

   //Get Product/Service information to get domain and relid

    $command = 'GetClientsProducts';
    $postData = array(
        'serviceid' => $vars['serviceid'],
        'stats' => true,
    );
    
    $service = localAPI($command, $postData);    
    print_r($service);

  //create FTP user (is OK this part)

  //Save to custom fields associate to the addon
    
});

 

1- Is this the correct hook to create my FTP when activating the addon?
2- Would there be a way to see what my print_r return?
3- What would be the best way to register the associated customs fields?

 

For more information, my addon is used to create an FTP user with a directory of his own to be able to deposit certain document without having access to anything else.

Thanks