"""VALIDA GridWorker — forward-tracking == backtest grid_mtm (gate obbligatorio del progetto).

Il GridWorker (sim/paper) bootstrappa la storia FULL (start fisso) e mappa il capitale forward
dal deploy: capital = initial * eq[-1]/base_norm. Proprieta' da validare:
  [A] LOGICA: la griglia sul feed full == backtest (stesso n_trades/win).
  [B] FORWARD: deployato a T0 (bootstrap up to T0), dopo aver ticcato fino a T1 il capitale
      e' initial * eq_full(T1)/eq_full(T0) — cioe' il ritorno della griglia DA T0 (causale).
  [C] RESUME: reistanziato (rilegge base_norm da status.json) -> stesso capitale.
Config = la finale del re-gate pulito: BTC 1h range1.5 rd0.20 ru0.06 L6 sl0.10 tp0.03.

    uv run python scripts/analysis/validate_grid_worker.py
"""
from __future__ import annotations

import shutil
import sys
import tempfile
from pathlib import Path

PROJECT_ROOT = Path(__file__).resolve().parents[2]
sys.path.insert(0, str(PROJECT_ROOT))

from src.data.downloader import load_data
from scripts.analysis.grid_game_gate import grid_mtm
from scripts.analysis.ladder_search import regime_mask
from src.live.grid_worker import GridWorker

CFG = dict(tf="1h", range_down=0.20, range_up=0.06, levels=6,
           sl_buf=0.10, tp_buf=0.03, max_bars=720, regime="range", trend_max=1.5)
ASSET, INIT, POS, LEV, FEE = "BTC", 1000.0, 0.15, 3.0, 0.0005


def _eq_last(df, mask):
    cfg_bt = {k: v for k, v in CFG.items() if k not in ("regime", "trend_max")}
    eqd, st = grid_mtm(ASSET, **cfg_bt, pos=POS, lev=LEV, fee_side=FEE, deploy_mask=mask, df=df)
    return float(eqd.iloc[-1]), st


def main():
    df = load_data(ASSET, "1h")
    n = len(df)
    nboot = n - 400                                   # deploy a T0 = nboot, poi 400 barre forward
    mask_full = regime_mask(ASSET, "1h", trend_max=CFG["trend_max"])

    F, st_full = _eq_last(df, mask_full)              # eq full @ T1 (== backtest)
    B, _ = _eq_last(df.iloc[:nboot].reset_index(drop=True), mask_full[:nboot])  # eq @ T0 (causale)
    expected = INIT * F / B
    print(f"[backtest] eq@T0={B:.4f} eq@T1={F:.4f} -> capitale forward atteso {expected:,.2f} "
          f"(trades full {st_full['trades']}, win {st_full['win']:.1f}%)")

    wd = Path(tempfile.mkdtemp(prefix="gridval_"))
    try:
        boot = df.iloc[:nboot].reset_index(drop=True)
        w = GridWorker("GRID_BTC", ASSET, CFG, INIT, wd, leverage=LEV,
                       position_size=POS, fee_side=FEE, hist=boot)
        # [A] logica: tick col feed full -> n_trades come backtest
        w.tick(df)
        dA = abs(w.n_trades - st_full["trades"])
        print(f"[A] logica n_trades worker {w.n_trades} vs backtest {st_full['trades']}  "
              f"{'OK' if dA == 0 else 'MISMATCH'}")

        # [B] forward: deploy a T0 (base), poi fino a T1
        wd2 = Path(tempfile.mkdtemp(prefix="gridval_fwd_"))
        wf = GridWorker("GRID_BTC", ASSET, CFG, INIT, wd2, leverage=LEV,
                        position_size=POS, fee_side=FEE, hist=boot)
        wf.tick(boot)                                  # deploy: base_norm=B, capital=initial
        cap0 = wf.capital
        wf.tick(df.iloc[:n - 200].reset_index(drop=True))
        wf.tick(df)                                    # fino a T1
        dB = abs(wf.capital - expected)
        print(f"[B] forward: cap@deploy {cap0:,.2f} (atteso {INIT:,.0f})  cap@T1 {wf.capital:,.2f} "
              f"(atteso {expected:,.2f})  delta {dB:.4f}  {'OK' if dB < 0.05 else 'MISMATCH'}")

        # [C] resume
        wr = GridWorker("GRID_BTC", ASSET, CFG, INIT, wd2, leverage=LEV,
                        position_size=POS, fee_side=FEE, hist=boot)
        wr.tick(df)
        dC = abs(wr.capital - wf.capital)
        print(f"[C] resume cap {wr.capital:,.2f}  delta {dC:.4f}  "
              f"{'OK' if dC < 0.05 else 'MISMATCH'} (base_norm persistito)")

        ok = dA == 0 and dB < 0.05 and dC < 0.05
        print(f"\n{'VALIDAZIONE OK: GridWorker forward-tracking == backtest' if ok else 'VALIDAZIONE FALLITA'}")
        shutil.rmtree(wd2, ignore_errors=True)
    finally:
        shutil.rmtree(wd, ignore_errors=True)


if __name__ == "__main__":
    main()