import serial
import struct
from google.protobuf.message import DecodeError
from serial.tools import list_ports

from cls_device_pb2 import RequestList, Device, ResponseList
from usb_pb2 import PackageType
from vcp_driver import *

if __name__ == "__main__":
        ser = setup_connection()
        # Create a RequestDeviceList message
        request = RequestList()
        request.msg = 1  # or whatever value you want to set

        # Serialize the request to a bytearray
        request_data = request.SerializeToString()

        # Send the request
        send_package(PackageType.REQUEST_DEVICE_LIST, request_data, ser)

        # Now wait for the response
        while True:
            # Read the header from the serial port
            response_header = ser.read(5)  # assuming the header is 5 bytes long

            # Unpack the header to get the length and type
            length, typeid, check = struct.unpack('<HHB', response_header)

            # Check if the type is RESPONSE_DEVICE_LIST
            if typeid == PackageType.RESPONSE_DEVICE_LIST:
                # Read the response data from the serial port
                response_data = ser.read(length)

                # Try to parse the data as a ResponseDeviceList message
                try:
                    response = ResponseList.FromString(response_data)
                    # If we get here, we successfully parsed the response. Break the loop.
                    break
                except DecodeError:
                    # If we get a DecodeError, it means the data we read is not a valid
                    # ResponseDeviceList message. Ignore it and continue reading.
                    pass

        # At this point, 'response' contains the ResponseDeviceList message
        print(response)