Groovy Code Help: List all files + Last Modified Date/Time

Requirement:

I'm looking for Groovy Script to list out All files in all sub-folders as well as it's Date Modified --

The code should be able to accept the Main folder as input and then parse all sub folders to look for files and it's Date Modified attribute
Example:
C:\Main (Main Folder)
C:\Main\Test1\example1.txt (child folder with 1 text file of Date Modified: 05/25/2021 1:00am)
C:\Main\Test2\example2.txt
C:\Main\Test2\example3.txt (child folder with 2 text files of Date Modified: 05/26/2021 2:30am)

Output:
File: C:\Main\Test1\example1.txt
DateModified: 05/25/2021 1:00am

File: C:\Main\Test2\example2.txt
DateModified: 05/26/2021 2:30am

File: C:\Main\Test2\example3.txt
DateModified: 05/26/2021 2:30am

** I have a Groovy script but the Date Modified returns the Folder Date modified and not the files date.

**Willing to up the price if I can get code back within 30mins as it seems like a small issue in my code.