from asyncio import StreamReader, StreamWriter, open_connection
from rcon.exceptions import SessionTimeout, WrongPassword
from rcon.source.proto import Packet, Type
from rcon.source.async_rcon import close, communicate

# https://github.com/conqp/rcon/blob/929f358f1a7d155141704866b736c6f9666b4bd1/rcon/source/async_rcon.py#L45
async def rcon(
        command: str,
        *arguments: str,
        host: str,
        port: int,
        passwd: str,
        encoding: str = 'utf-8',
        frag_threshold: int = 4096,
        frag_detect_cmd: str = ''
) -> str:
    """Run a command asynchronously."""

    reader, writer = await open_connection(host, port)
    response = await communicate(
        reader,
        writer,
        Packet.make_login(passwd, encoding=encoding),
        frag_threshold=frag_threshold,
        frag_detect_cmd=frag_detect_cmd
    )

    # Wait for SERVERDATA_AUTH_RESPONSE according to:
    # https://developer.valvesoftware.com/wiki/Source_RCON_Protocol
    while response.type != Type.SERVERDATA_AUTH_RESPONSE:
        response = await Packet.aread(reader)

    if response.id == -1:
        await close(writer)
        raise WrongPassword()

    request = Packet.make_command(command, *arguments, encoding=encoding)
    response = await communicate(reader, writer, request)
    await close(writer)

    if response.id != request.id:
        raise SessionTimeout()

    try:
        return response.payload.decode(encoding)
    except UnicodeDecodeError:
        #print(f"[{host}:{port}] Cannot decode response payload, use ignore encoding")
        return response.payload.decode(encoding, errors="ignore")