Simple python aiohttp server to switch input channels on Denon-AVRs

denonavr.py

import logging
import denonavr

from aiohttp import web
from rich.logging import RichHandler

DEBUG = False
IP_RECEIVER = '192.168.2.187'

async def channel(request):
    logger = request.app.logger.getChild("denon")
    chname = request.match_info['chname']
    logger.debug(f"trying to switch input to: {chname}")
    res = request.app['denon'].input_func = chname
    return web.json_response({"status": res}, headers = {'Access-Control-Allow-Origin':'*'})

def app():
    FORMAT = "%(name)s %(message)s"
    level = logging.DEBUG if DEBUG else logging.INFO
    logging.basicConfig(
        level=level, format=FORMAT, datefmt="[%X]", handlers=[RichHandler()]
    )

    app = web.Application(logger=logging.getLogger(__name__), debug=DEBUG)    

    d = denonavr.DenonAVR(IP_RECEIVER, "Denon Receiver")
    app['denon'] = d
    app.logger.info(f"Started... Receiver-Info: {d.receiver_type}, S/N {d.serial_number}")
    app.logger.debug(f"channels: {d.input_func_list}")
    app.router.add_get("/denon/channel/{chname}", channel)
    return app