import asyncio
import json
from typing import Optional, Awaitable, Callable

import websockets
from loguru import logger


class GsCoreClient:
    def __init__(self):
        self._ws = None
        self._url: str = ""
        self._recv_task: Optional[asyncio.Task] = None
        self._message_handler: Optional[Callable[[dict], Awaitable[None]]] = None

    def configure(self, url: str, handler: Callable[[dict], Awaitable[None]]):
        self._url = url
        self._message_handler = handler

    async def connect(self):
        if not self._url:
            logger.warning("[GsCoreClient] gscore_url 未配置，跳过连接")
            return False
        if self._ws is not None:
            return True
        try:
            logger.info(f"[GsCoreClient] 连接早柚核心: {self._url}")
            self._ws = await websockets.connect(self._url, max_size=10**7)
            loop = asyncio.get_running_loop()
            self._recv_task = loop.create_task(self._recv_loop())
            return True
        except Exception as e:
            logger.error(f"[GsCoreClient] 连接早柚核心失败: {e}")
            self._ws = None
            return False

    async def _recv_loop(self):
        if not self._ws:
            return
        while True:
            try:
                msg = await self._ws.recv()
                if isinstance(msg, bytes):
                    msg_str = msg.decode("utf-8")
                else:
                    msg_str = msg
                try:
                    payload = json.loads(msg_str)
                except Exception as e:
                    logger.exception(f"[GsCoreClient] 解析核心返回失败: {e}")
                    continue
                if self._message_handler:
                    try:
                        await self._message_handler(payload)
                    except Exception as e:
                        logger.exception(f"[GsCoreClient] 处理核心返回失败: {e}")
            except websockets.exceptions.ConnectionClosed as e:
                logger.warning(f"[GsCoreClient] WebSocket连接关闭: {e}")
                break
            except Exception as e:
                logger.exception(f"[GsCoreClient] 接收消息异常: {e}")
                break
            await asyncio.sleep(0)

    async def send(self, message: str) -> bool:
        if not self._ws:
            ok = await self.connect()
            if not ok:
                return False
        try:
            await self._ws.send(message.encode("utf-8"))
            return True
        except Exception as e:
            logger.error(f"[GsCoreClient] 发送消息失败: {e}")
            return False

    async def reconnect(self):
        await self.close()
        await self.connect()

    async def close(self):
        if self._recv_task:
            self._recv_task.cancel()
            self._recv_task = None
        if self._ws:
            try:
                await self._ws.close()
            except Exception:
                pass
            self._ws = None


gs_core_client = GsCoreClient()