from asyncio import StreamReader, StreamWriter, Queue
from dataclasses import dataclass, field
from logging import log, INFO
from paircd.message import Message
from typing import Set


@dataclass
class Client:
    hostname: str
    reader: StreamReader
    writer: StreamWriter
    msg_queue: Queue = field(default_factory=Queue)

    nickname: str = ""
    username: str = ""
    realname: str = ""
    registered: bool = False

    channels: Set[str] = field(default_factory=set)

    def id(self) -> str:
        nickname = self.nickname or "<unknown>"
        username = self.username or "<unknown>"
        return f"{nickname}!{username}@{self.hostname}"

    def log(self, msg: str, level: int = INFO) -> None:
        log(level, f"{self.hostname} ({self.id()}) {msg}")

    async def write_forever(self) -> None:
        while True:
            msg = await self.msg_queue.get()
            self.writer.write(msg)
            await self.writer.drain()

    def write_message(self, message: Message) -> None:
        self.msg_queue.put_nowait(message.encode())