How do I push files to be printed to Octoprint for printing from a plugin

Trying to write a display plugin that doesn't need a touchscreen, as the only ARM boards that work with touchscreens that I know of are the Pi's. Which are $100+ in the US.

I'm having separate problems that more pertain to my GUI backend, or probably lack thereof, I'm using, pygame, and my limited knowledge of python, but I need this for future reference. Reading the filenames and getting file paths I'll ask about elsewhere.

self._printer.select_file(gcode_file_name, False, printAfterSelect=True)