zeropod/__main__.py

import os
import signal
import time
from traceback import print_exc
from importlib import import_module
from icecream import ic
from menu import Menu, MenuItem, MenuType
from cinput import ControlInput
from graphics import Graphics

menu_config = [
        MenuItem("Apps",
            MenuType.SUB_MENU,
            {"sub_menu": [
                MenuItem("Chess",
                    MenuType.PLUGIN,
                    {"plugin": "chess",
                        "arg": None}),
                MenuItem("Cube Timer",
                    MenuType.PLUGIN,
                    {"plugin": "cube",
                        "arg": None}),
                ]}),
        MenuItem("Information",
            MenuType.PLUGIN,
            {"plugin": "info",
                "arg": None}),
        MenuItem("Reboot",
            MenuType.EXIT_CMD,
            {"command": "sudo reboot"}),
        MenuItem("Shutdown",
            MenuType.EXIT_CMD,
            {"command": "sudo shutdown now"})]

cinput = ControlInput()
graphics = Graphics()
menu = Menu(menu_config, cinput, graphics)

def program_exit(*_):
    graphics.clear()
    graphics.show()
    os._exit(0)

signal.signal(signal.SIGINT, program_exit)
signal.signal(signal.SIGTERM, program_exit)

try:
    while True:
        item = menu.get_selection()
        ic(item)
        if item.menu_type == MenuType.PLUGIN:
            try:
                graphics.clear()
                graphics.text("Loading...", 0, 0, 1)
                graphics.show()
                plugin = import_module("plugin." + item.data["plugin"])
                ic(plugin)
                plugin.execute(cinput, graphics, item.data["arg"])
            except:
                print_exc()
                graphics.clear()
                graphics.text("Plugin error!", 0, 0, 1)
                graphics.show()
                time.sleep(3)
        elif item.menu_type == MenuType.EXIT_CMD:
            os.system(item.data["command"])
            program_exit()
except:
    print_exc()
    program_exit()