Create Photoshop SCRIPT that will automate product image creation though mock up in bulk

I need freelancer to create a SCRIPT for Photoshop 1. That script must open the mock up (provided in attachments) 2. Script must then open the folder with the designs (input not provided) note: each design of different resolution 3. Script must insert the design in the smart object of the mock up to the either full height or width but without distorting the image so the resizing must be proportionate and centered on the working area either vertically or horizontally 4. Then script must export the image into output folder in form of png 5. Then do the same for all the provided images IF YOU DON'T KNOW ENGLISH AND CANT COMPREHEND THE JOB, PLEASE DON'T PROPOSE WITH A TEMPLATE TEXT THAT SAYS WHAT YOU CAN DO. I NEED TO KNOW THAT YOU CAN DO ONLY THIS