#!/usr/bin/env python3
"""
main.py - 缠论买卖点监控主程序。

每整分钟：
  1. 从 data_provider 拉取所有币对最新 1m K 线
  2. 每个币对独立跑缠论管线
  3. 检测新笔 → 检查上一笔终点是否 BSP → 推送
  4. 检测中枢特征变化 → 推送
"""
import asyncio
import logging
import sys
import os
import time
from dataclasses import dataclass, field
from datetime import datetime, timezone, timedelta
from typing import Optional

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))

from fetcher import fetch_ohlcv, get_symbols
from engine import ChanEngine
from notify import send_bsp_alert, send_telegram_message, BOT_TOKEN, CHAT_ID

_PARENT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
if _PARENT not in sys.path:
    sys.path.insert(0, _PARENT)
from ChanPivotMonitor import ChanPivotMonitor
from ChanEnum import Chan_BI_DIR

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
)
logger = logging.getLogger("bsp_monitor")


def _short(symbol: str) -> str:
    """BTC/USDT:USDT → BTCUSDT"""
    return symbol.split(":")[0].replace("/", "")


def _bi_id(bi) -> Optional[tuple]:
    """笔的稳定标识，基于首K线时间戳。"""
    if bi.start_klc is None:
        return None
    return (bi.start_klc.start_time,)


@dataclass
class SymbolState:
    symbol: str
    pivot_monitor: ChanPivotMonitor = field(default_factory=ChanPivotMonitor)
    last_bi_id: Optional[tuple] = None  # 上次检查过的最后一笔 ID
    last_df_ts: object = None  # 最新已处理的 K 线时间戳
    first_run: bool = True


class BSPMonitor:
    def __init__(self):
        symbols = get_symbols()
        self._states: dict[str, SymbolState] = {
            s: SymbolState(symbol=s) for s in symbols
        }
        logger.info(f"监控 {len(symbols)} 个币对: {', '.join(_short(s) for s in symbols)}")

    async def tick(self):
        tick_start = time.monotonic()
        logger.info("── tick 开始 ──")

        for symbol, st in self._states.items():
            await self._tick_symbol(symbol, st)

        elapsed = (time.monotonic() - tick_start) * 1000
        logger.info(f"── tick 结束 ({elapsed:.0f}ms) ──")

    async def _tick_symbol(self, symbol: str, st: SymbolState):
        name = _short(symbol)

        # 1. 拉取 K 线
        try:
            df = fetch_ohlcv(symbol)
        except Exception as e:
            logger.error(f"[{name}] 拉取失败: {e}")
            return

        if df.empty:
            logger.warning(f"[{name}] DataFrame 为空")
            return

        # 2. 检查是否有新 K 线
        latest_ts = df.iloc[-1]["timestamp"]
        if st.last_df_ts and latest_ts <= st.last_df_ts:
            return
        st.last_df_ts = latest_ts

        # 3. 运行缠论管线
        try:
            engine = ChanEngine(df)
        except Exception as e:
            logger.error(f"[{name}] 缠论计算失败: {e}", exc_info=True)
            return

        # 4. 获取已确认的笔
        confirmed = [b for b in engine.bi_list if b.is_sure]
        if len(confirmed) < 2:
            return

        last_confirmed = confirmed[-1]
        current_bi_id = _bi_id(last_confirmed)
        if current_bi_id is None:
            return

        # 5. 首轮：记录状态，不推送
        if st.first_run:
            st.first_run = False
            st.last_bi_id = current_bi_id
            st.pivot_monitor.update(engine.bi_zs_list)
            logger.info(
                f"[{name}] 首次完成 — {len(confirmed)} 笔, "
                f"{len(engine.bsp_list)} BSP (不推送)"
            )
            return

        # 6. 检测新笔确认
        if current_bi_id == st.last_bi_id:
            return

        prev_bi_id = st.last_bi_id
        st.last_bi_id = current_bi_id

        bi_dir = "⬆️" if last_confirmed.dir == Chan_BI_DIR.UP else "⬇️"
        logger.info(f"[{name}] 新笔确认 — #{len(confirmed)} "
                    f"{bi_dir} 高度: ${last_confirmed.height:.2f}")

        # 7. 找到刚被终结的那笔（上一轮的 confirmed[-1]），检查其终点是否为 BSP
        prev_bi = None
        for b in engine.bi_list:
            if b.is_sure and _bi_id(b) == prev_bi_id:
                prev_bi = b
                break

        if prev_bi:
            bsp = engine.get_bsp_for_bi(prev_bi)
        else:
            bsp = None

        if bsp:
                key = f"{symbol}_{bsp.type}_{bsp.klc.end_time}"
                msg = engine.format_bsp_detail(bsp, symbol)
                msg = _escape_html(msg)
                if send_bsp_alert(msg, bsp_key=key):
                    logger.info(f"[{name}] ✅ BSP: {key}")

        # 8. 中枢特征更新
        pivot_state = st.pivot_monitor.update(engine.bi_zs_list)
        if pivot_state:
            logger.info(
                f"[{name}] 中枢更新: bi_count={pivot_state['bi_count']} "
                f"contraction={pivot_state['contraction']:.4f} "
                f"shift={pivot_state['shift_norm']:+.4f}"
            )
            self._push_pivot(pivot_state, name)

    def _push_pivot(self, state: dict, name: str):
        if state["is_sure"]:
            phase = "✅ 已确认"
        elif state["bi_count"] > 3:
            phase = "🔄 延伸中"
        else:
            phase = "🆕 刚形成"

        zs_dir = state["zs_dir"]
        dir_label = "⬆️ 向上" if "UP" in zs_dir else "⬇️ 向下"

        c = state["contraction"]
        if c < 0.85:
            contraction_note = "收敛（振幅缩小，可能快出方向）"
        elif c > 1.15:
            contraction_note = "扩张（振幅放大，波动加剧）"
        else:
            contraction_note = "稳定"

        s = state["shift_norm"]
        if s > 0.3:
            shift_note = "重心上移（偏多）"
        elif s < -0.3:
            shift_note = "重心下移（偏空）"
        else:
            shift_note = "重心居中"

        msg = (
            f"🏠 <b>中枢更新</b> — {name} 1m\n"
            f"\n"
            f"📐 笔数: <b>{state['bi_count']}</b>  {dir_label}  {phase}\n"
            f"📏 收敛率: <b>{state['contraction']:.4f}</b> → {contraction_note}\n"
            f"⚖️ 重心漂移: <b>{state['shift_norm']:+.4f}</b> → {shift_note}\n"
            f"⏱️ 持续: {state['duration_raw']}K  "
            f"(norm: {state['duration_norm']:.2f})\n"
            f"📦 区间: {state['zd']:.2f} – {state['zg']:.2f}  "
            f"(gg/dd: {state['gg']:.2f}/{state['dd']:.2f})"
        )
        send_telegram_message(msg)

    async def run(self):
        logger.info("=" * 50)
        logger.info(f"bsp_monitor 启动 — {len(self._states)} 币对 1m 缠论监控")
        logger.info(f"Telegram: {'已配置' if BOT_TOKEN and CHAT_ID else '⚠️ 未配置'}")
        logger.info("=" * 50)

        logger.info("首次运行（初始化，不推送）...")
        await self.tick()

        while True:
            now = datetime.now(timezone.utc)
            next_minute = now.replace(second=0, microsecond=0) + timedelta(minutes=1)
            wait_seconds = max(0.1, (next_minute - now).total_seconds())

            logger.info(f"等待 {wait_seconds:.0f}s 到 {next_minute.strftime('%H:%M:%S')}UTC")
            await asyncio.sleep(wait_seconds)

            try:
                await self.tick()
            except Exception as e:
                logger.error(f"tick 异常: {e}", exc_info=True)
                await asyncio.sleep(5)


def _escape_html(msg: str) -> str:
    """HTML 转义，保留已有的 <b>/<code> 标签。"""
    msg = msg.replace("&", "&amp;")
    msg = msg.replace("<b>", "\x00B\x00").replace("</b>", "\x00/B\x00")
    msg = msg.replace("<code>", "\x00C\x00").replace("</code>", "\x00/C\x00")
    msg = msg.replace("<", "&lt;").replace(">", "&gt;")
    msg = msg.replace("\x00B\x00", "<b>").replace("\x00/B\x00", "</b>")
    msg = msg.replace("\x00C\x00", "<code>").replace("\x00/C\x00", "</code>")
    return msg


if __name__ == "__main__":
    monitor = BSPMonitor()
    try:
        asyncio.run(monitor.run())
    except KeyboardInterrupt:
        logger.info("收到中断信号，退出")