Script for automating t shirt mockup

[superexcited]

Hi guys,

I've read and tried some pretty similar posts from others about this problem but failed, so I created this post and hope that some one can help me out.
I have 3 folders:
- PNG: I saved my designs in PNG format in this folder (let's say I have 500PNG designs in this folder)
- PSD: where I saved PSD mockup files (5PSD mockups)
- JPG: the folder where I will save exported files with JPG format

I need a script that:
- Allows me to choose the design/mockup/export folders (PNG/PSD/JPG in this case).
- Replaces Smart Object layer in each PSD files (in PSD folder) by a PNG file (in PNG folder) then save as a JPG file (to JPG folder).
(in the end I'll have 5PSD x 500PNG ====>>> 2500JPG files in JPG folder)

Any kind of help will be extremely appreciated. Thank you in advance!

[Stephen Marsh]

I'd start here:

http://www.mouseprints.net/old/dpr/PhotoCollageToolkit.html

You'll probably need to select 1 template at a time and run x5 for the x500 design variations.

[Bojan Živković]

You have 5 different mockup to place 500 different designs in each? It is not that straight forward but doable. See suggestion above and ask more questions. 

[Stephen Marsh]

Some more topics, which may include other scripts:

https://community.adobe.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...

https://community.adobe.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...

Phone cases are another common topic, scripts should be applicable to both:

https://community.adobe.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...

Smart object replacement:

https://community.adobe.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&...

Another option here:

https://github.com/joonaspaakko/Batch-Mockup-Smart-Object-Replacement-photoshop-script

Good luck!