Scripting in UXP Developer tools

[Barbie26493937w09n]

So I'm trying to create a plugin in Photoshop using UXP developer tools.

What I'm trying to achieve:

When i click "Play Action", i want the photoshop to play the commands "command + j" and then "option + [". Command j performs duplication of the active layer, option j performs selection of backward layer.

I can do it manually but it's tiring to work on multiple documents by doing it manually.

If it's possible,

I would rather want the script to do

Constantly check for active selection > if there is an active selection > perform the above mentioned commands.

Please check the attached document.

[Lumigraphics]

Try recording it as an action and then saving the batchplay result.

[Barbie26493937w09n]

Im sorry if this dumb, im using Ai to create this. the interface is greate but when executing the action, nothing happends. 

"

const photoshop = require('photoshop'); // Import the Photoshop module

const app = photoshop.app;"

is this correct? im using Photoshop Beta.  

and how do i write in the script to identify the active selection {marching ants) in the layer?