Salla API work

is it possible here to create an app using javascript code , it will be when pressing on Add to cart Then >>> A pop-up will show this pop-up must be customized and managed from OUR dashboard not salla ,and inside pop-up we add products also managed from backend ,,, but we need to add also Add to cart button to these products that will also work as original add to cart and it will really add the product to the cart

Api doc link - https://docs.salla.dev/

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