What programming language and libraries could I use to automate this Blender to Unreal Engine pipeline?

What programming language and libraries could I use to automate a Blender to Unreal Engine pipeline?

I want to automate the following steps (on Windows/Linux)

Open Blender from specified path by user input
Open a specified .blend file
execute a Blender script which manipulates the .blend file
if execution was successful, proceed with exporting the current .blend file as .fbx to a specified path by user input, otherwise just throw an error
open UE4
create a new third-person game project under specified path by user input
open the newly created project
import the .fbx file

What programming language and libraries/package could I use to automate this process?

Solution

PYTHON ! python is the language blender understands internally within python you got import sys to do file system things and execute run other apps to control the non python apps checkout https://bigl.es/tuesday-tooling-simulate-keyboard-input-with-python/