question about creating custom App

[benjii]

Hey guys, 

I am trying to make a very simple application, which allows the user to restore a project on the controller.
I created a button and I want for it to execute the command.
I know i should use the curl 'https://127.0.0.1/scade-main/general/restore' but not how and where to write it.
I have an index.html, script.js and style.css files in the directory and also the project.zip file in question.

Can someone help me ?
Thanks in advance!