Need Help in Custom tool to send File to external storage

Hi Community,

I am currently trying to create a Custom utility(tool)  in Adobe Acrobat to send an open PDF to online External Storage (like one drive, box, google drive, etc).

I have few questions to ask for guidance/help.

1. How can I do external storage authentication in adobe acrobat to send open pdf files?

2. Is it possible to open these external storage web authentication page inside adobe acrobat (dialog panel)?

3. Is it possible with javaScript or with the C/C++ plugin Development? 

I am aware that in JavaScript API reference "LaunchURL" is there but it opens a web page outside acrobat that is not what I looking for.

I also know I can add External Storage Account in adobe acrobat Pro Dc via going to "Home-> Add an Account" where I can get an option to add external accounts like a box, google drive, etc but I am trying for a custom tool.

I need guidance on these points to move further.

Thanks