#!/usr/bin/env python3
"""Optuna JSON(#199·mode) vs 동일 엔진 재평가 — DB 미변경.

Usage:
  python3 -u scripts/momentum_optuna_parity_reeval.py \\
    --json kis_trader/backtest/results/optuna_momentum_tpe_20260821_220227.json \\
    --out logs/momentum_optuna_parity_OUT.json
"""
from __future__ import annotations

import argparse
import json
import time
import traceback
from pathlib import Path


def main() -> int:
    ap = argparse.ArgumentParser()
    ap.add_argument(
        "--json",
        default="kis_trader/backtest/results/optuna_momentum_tpe_20260821_220227.json",
    )
    ap.add_argument("--out", required=True)
    args = ap.parse_args()

    t0 = time.time()
    json_path = Path(args.json)
    out_path = Path(args.out)
    d = json.loads(json_path.read_text())
    start, end = d["start"], d["end"]
    slot = float(d["slot_money"])
    max_stocks = int(d["max_stocks"])
    budget = float(d["total_budget_krw"])
    grid_keys = list(d["grid_keys"])

    t199 = next(x for x in d["results_all"] if x.get("optuna_trial_number") == 199)
    mode_params = dict(d["mode_combo"]["params"])
    p199 = dict(t199["params"])

    from kis_trader.backtest.optuna_momentum import prepare_momentum_search_context
    from kis_trader.backtest.param_search_momentum import evaluate_momentum_param_combo

    print(
        f"prepare {start}~{end} slot={slot} max={max_stocks} budget={budget} OB=off",
        flush=True,
    )
    ctx = prepare_momentum_search_context(
        start,
        end,
        "tpe",
        slot_money=slot,
        max_stocks=max_stocks,
        total_budget_krw=budget,
        orderbook_filter="off",
        market="KR",
    )
    if ctx is None:
        print("prepare failed", flush=True)
        return 1

    # Optuna 학습과 동일: 호가 OFF. 휩쏘 키는 있으면 OFF (DB ON이어도 비교용 고정)
    base = dict(ctx.base_fixed)
    base["_orderbook_filter_enabled"] = False
    for k in list(base.keys()):
        if "whipsaw" in k.lower() and isinstance(base[k], (bool, int)):
            base[k] = False if isinstance(base[k], bool) else 0

    print(
        f"ctx ready candles={len(ctx.codes_candles)} "
        f"ticks={'yes' if ctx.ticks_by_code else 'no'} "
        f"ob_snaps={len(ctx.orderbook_by_code)} fee={ctx.fee_rate} tax={ctx.sell_tax}",
        flush=True,
    )
    print(
        f"base tick_entry={base.get('backtest_use_tick_entry')} "
        f"tick_exit={base.get('backtest_use_tick_exit')} "
        f"ob={base.get('_orderbook_filter_enabled')} "
        f"whip_keys={[k for k in base if 'whip' in k.lower()]}",
        flush=True,
    )

    def run_one(label, combo, recorded):
        print(f"--- eval {label} ---", flush=True)
        r = evaluate_momentum_param_combo(
            combo,
            base_fixed=base,
            grid_keys=grid_keys,
            codes_candles=ctx.codes_candles,
            min_trades=1,
            min_win_rate=0.0,
            min_pf=0.0,
            universe_by_slot=ctx.universe_by_slot,
            slot_money=ctx.slot_money,
            max_stocks=ctx.max_stocks,
            total_budget_krw=ctx.total_budget_krw,
            fee_rate=ctx.fee_rate,
            sell_tax=ctx.sell_tax,
            period_days=ctx.period_days,
            cache_holder=ctx.cache_holder,
            ticks_by_code=ctx.ticks_by_code,
            orderbook_by_code=ctx.orderbook_by_code,
            program_by_code=ctx.program_by_code,
            log_verdict_by_code=ctx.log_verdict_by_code,
            start_key=ctx.start_key,
            end_key=ctx.end_key,
            include_trades=False,
        )
        if not r:
            return {"label": label, "ok": False, "error": "evaluate returned None"}
        out = {
            "label": label,
            "ok": True,
            "reeval": {
                "total_pnl": r.get("total_pnl"),
                "total_trades": r.get("total_trades"),
                "win_rate": r.get("win_rate"),
                "pf": r.get("pf"),
                "mdd": r.get("mdd"),
            },
            "recorded": recorded,
            "delta_pnl": float(r.get("total_pnl") or 0) - float(recorded.get("total_pnl") or 0),
            "delta_trades": int(r.get("total_trades") or 0)
            - int(recorded.get("total_trades") or 0),
            "match": (
                int(r.get("total_pnl") or 0) == int(recorded.get("total_pnl") or 0)
                and int(r.get("total_trades") or 0)
                == int(recorded.get("total_trades") or 0)
            ),
        }
        print(json.dumps(out, ensure_ascii=False), flush=True)
        return out

    rows = [
        run_one(
            "#199",
            p199,
            {
                "total_pnl": t199["total_pnl"],
                "total_trades": t199["total_trades"],
                "win_rate": t199["win_rate"],
                "pf": t199["pf"],
            },
        ),
        run_one(
            "mode_combo",
            mode_params,
            {
                "total_pnl": d["mode_combo"]["backtest"]["total_pnl"],
                "total_trades": d["mode_combo"]["backtest"]["total_trades"],
                "win_rate": d["mode_combo"]["backtest"]["win_rate"],
                "pf": d["mode_combo"]["backtest"]["pf"],
            },
        ),
    ]

    report = {
        "source_json": str(json_path),
        "period": {"start": start, "end": end},
        "portfolio": {
            "slot_money": slot,
            "max_stocks": max_stocks,
            "total_budget_krw": budget,
        },
        "orderbook": "off",
        "db_touched": False,
        "elapsed_sec": round(time.time() - t0, 1),
        "comparisons": rows,
        "note": (
            "Optuna evaluate 경로 재실행"
            "(웹엔진=run_momentum_backtest_web_aligned). DB 미변경."
        ),
        "web_bt_note": (
            "지금 웹폼(호가ON+휩쏘ON)과 숫자 비교가 아님. "
            "정합=JSON기록 vs 동일조건 재시뮬."
        ),
    }
    out_path.parent.mkdir(parents=True, exist_ok=True)
    out_path.write_text(json.dumps(report, ensure_ascii=False, indent=2))
    print("WROTE", out_path, flush=True)
    print(
        "FINAL",
        json.dumps(
            {
                r["label"]: {
                    "match": r.get("match"),
                    "delta_pnl": r.get("delta_pnl"),
                    "delta_trades": r.get("delta_trades"),
                    "reeval": r.get("reeval"),
                }
                for r in rows
            },
            ensure_ascii=False,
        ),
        flush=True,
    )
    return 0 if all(r.get("match") for r in rows if r.get("ok")) else 2


if __name__ == "__main__":
    try:
        raise SystemExit(main())
    except Exception:
        traceback.print_exc()
        raise SystemExit(1)