"""Step 34：require_touch=False 之后，回抽容差 tol 应该压到多小。

step29 发现放宽 tol 会让三个级别全面恶化。原因是语义变了：
不再要求回抽触边界后，tol 唯一的作用是「哪些K线算回抽中、从而跳过转强判定」，
所以 tol 越大入场越晚。若这个推断成立，tol 应当一路压到 0 乃至完全禁用。

tol<0 表示禁用跳过：突破后每一根都检查转强，入场最早。
同时输出滞后分布，确认改善确实来自入场提前而非别的原因。
"""
from __future__ import annotations

import os
import sys
import warnings
from concurrent.futures import ProcessPoolExecutor, as_completed
from pathlib import Path

import numpy as np
import pandas as pd

warnings.filterwarnings("ignore")
for v in ("OMP_NUM_THREADS", "OPENBLAS_NUM_THREADS", "MKL_NUM_THREADS"):
    os.environ.setdefault(v, "1")

HERE = Path(__file__).resolve().parent
sys.path.insert(0, str(HERE))
sys.path.insert(0, str(HERE.parent))
pd.set_option("display.width", 320)

SL, TP, MAXB = 1.5, 3.0, 48
FEE, SLIP = 0.0004, 0.0001
BEST = {"5m": "30m", "15m": "1h", "30m": "2h"}
TOLS = [(-1.0, "禁用跳过"), (0.0, "tol 0"), (0.001, "tol 0.1%"),
        (0.003, "tol 0.3%(现用)"), (0.010, "tol 1%")]


def run_one(task: tuple) -> dict | None:
    import warnings as _w
    _w.filterwarnings("ignore")
    sys.path.insert(0, str(HERE))
    sys.path.insert(0, str(HERE.parent))

    from chanlun import TF_DF
    from lib.breakout import run_trades
    from lib.data import fetch_ohlcv
    from lib.fast_bsp3 import find_fast_bsp3
    from lib.fx_signal import extract_fx_signals, signals_to_frame
    from lib.nested_bsp import attach_htf_context, htf_fx_timeline
    from lib.nested_level import build_htf_zones

    sym, ltf = task
    pair = f"{sym}/USDT:USDT"
    try:
        df_l = fetch_ohlcv(pair, ltf, 10**9)
        if df_l is None or len(df_l) < 3000:
            return None
        chan_l = TF_DF(df_l, 1, ltf)
        cdf = chan_l.dataframe
        zones = build_htf_zones(cdf, ltf, chan=chan_l).reset_index(drop=True)
        if zones.empty:
            return None
        z = zones.copy()
        pg, pdn = z["zg"].shift(), z["zd"].shift()
        z["z_above"], z["z_below"] = z["zd"] > pg, z["zg"] < pdn
        z["zone_i"] = np.arange(len(z))

        df_h = fetch_ohlcv(pair, BEST[ltf], 10**9)
        if df_h is None or len(df_h) < 300:
            return None
        chan_h = TF_DF(df_h, 1, BEST[ltf])
        s = signals_to_frame(extract_fx_signals(chan_h, chan_h.dataframe))
        tl = htf_fx_timeline(s, chan_h.dataframe)

        out = []
        for tol, name in TOLS:
            sig = find_fast_bsp3(cdf, zones, tol=tol)
            if sig.empty or len(sig) < 20:
                continue
            sig = sig.merge(z[["zone_i", "z_above", "z_below"]], on="zone_i", how="left")
            sig = attach_htf_context(sig, cdf, tl, "h1")
            entries = list(zip(sig["entry_idx"].astype(int),
                               sig["direction"].astype(int)))
            tr = run_trades(cdf, entries, SL, TP, MAXB, fee=0.0, entry_delay=1)
            if tr.empty:
                continue
            m = sig.set_index("entry_idx")
            tr["mode"], tr["symbol"], tr["ltf"] = name, sym, ltf
            tr["date"] = cdf["date"].to_numpy()[tr["entry_idx"].to_numpy()]
            for c in ("h1_agree", "z_above", "z_below", "direction", "lag"):
                tr[c if c != "direction" else "dir_sig"] = tr["entry_idx"].map(m[c])
            out.append(tr)
        if not out:
            return None
        return {"task": f"{sym} {ltf}", "trades": pd.concat(out, ignore_index=True)}
    except Exception as e:
        return {"task": f"{sym} {ltf}", "error": repr(e)[:250]}


def stat(g: pd.DataFrame, label: str, minn: int = 25) -> dict:
    r = g["gross"].to_numpy() - FEE - SLIP
    if len(r) < minn:
        return {}
    w, o = r[r > 0], r[r <= 0]
    sd = r.std(ddof=1)
    t10 = r[r <= np.quantile(r, 0.90)]
    return {"分组": label, "笔数": len(r),
            "滞后": f"{g['lag'].mean():.1f}",
            "胜率": f"{(r > 0).mean() * 100:.1f}%",
            "中位": f"{np.median(r) * 100:+.3f}%",
            "PF": f"{w.sum() / abs(o.sum()):.2f}" if len(o) else "inf",
            "t值": f"{r.mean() / (sd / np.sqrt(len(r))):+.2f}",
            "剔10%PF": f"{t10[t10 > 0].sum() / abs(t10[t10 <= 0].sum()):.2f}"}


def main() -> None:
    tasks = [(s, l) for l in BEST for s in ("BTC", "ETH", "SOL")]
    print(f"[tol 扫描] {len(tasks)} 个任务 × {len(TOLS)} 档\n", flush=True)
    res = []
    with ProcessPoolExecutor(max_workers=5) as ex:
        futs = {ex.submit(run_one, t): t for t in tasks}
        for i, f in enumerate(as_completed(futs), 1):
            r = f.result()
            if r is None or "error" in (r or {}):
                print(f"  [{i}] 跳过 {(r or {}).get('error', '')}", flush=True)
                continue
            res.append(r)
            print(f"  [{i}/{len(tasks)}] {r['task']}", flush=True)
    if not res:
        return
    allt = pd.concat([r["trades"] for r in res], ignore_index=True)
    allt.to_csv(HERE / "out" / "step34_tol.csv", index=False)
    allt["push"] = np.where(allt["dir_sig"] == 1, allt["z_above"], allt["z_below"])
    allt["push"] = allt["push"].fillna(False).astype(bool)
    fin = allt[(allt["h1_agree"] == 1) & allt["push"]]
    order = {n: i for i, (_, n) in enumerate(TOLS)}

    print("=" * 118)
    print("########## 1. 全级别合并（同向+阶梯）##########")
    rows = [stat(g, m) for m, g in fin.groupby("mode")]
    df = pd.DataFrame([r for r in rows if r])
    print(df.assign(_k=df["分组"].map(order)).sort_values("_k")
            .drop(columns="_k").to_string(index=False))

    print("\n########## 2. 分级别 ##########")
    for ltf, g in fin.groupby("ltf"):
        rows = [stat(x, f"{ltf} {m}") for m, x in g.groupby("mode")]
        rows = [r for r in rows if r]
        if rows:
            d = pd.DataFrame(rows)
            d["_k"] = d["分组"].str.split(" ", n=1).str[1].map(order)
            print(d.sort_values("_k").drop(columns="_k").to_string(index=False))

    print("\n########## 3. 资金曲线 ##########")
    for _, name in TOLS:
        g = fin[fin["mode"] == name].sort_values("date")
        if len(g) < 30:
            continue
        r = g["gross"].to_numpy() - FEE - SLIP
        lev = np.clip(0.01 / np.clip(g["risk_pct"].to_numpy(), 0.002, None), 0, 20)
        pnl = r * lev
        eq = np.cumprod(1 + pnl)
        yrs = (pd.to_datetime(g["date"]).max() - pd.to_datetime(g["date"]).min()).days / 365.25
        dd = (1 - eq / np.maximum.accumulate(eq)).max()
        print(f"  {name:>14}: n={len(r):>4} 年{len(r) / yrs:>3.0f}笔  "
              f"年化 {(eq[-1] ** (1 / yrs) - 1) * 100:+7.1f}%  回撤 {dd * 100:5.1f}%  "
              f"Sharpe {pnl.mean() / pnl.std(ddof=1) * np.sqrt(len(pnl) / yrs):5.2f}")


if __name__ == "__main__":
    main()