"""
1단계 시뮬레이션 HTML — ground_truth 차트와 동일 스타일·타점·수익률·규칙 기준.
"""

from __future__ import annotations

import json
from pathlib import Path
from typing import Any

import pandas as pd

from config import (
    CHART_LOOKBACK_DAYS,
    COIN_NAME,
    GT_INITIAL_CASH_KRW,
    LIVE_ORDER_KRW,
    SYMBOL,
    TRADING_FEE_RATE,
)
from deepcoin.ground_truth.ground_truth import (
    load_ground_truth,
    simulate_truth_portfolio,
    simulate_truth_portfolio_steps,
)
from deepcoin.matching.portfolio_sim import (
    fires_to_trade_list,
    select_capped_fires,
    simulate_fixed_order_portfolio,
    simulate_fixed_order_portfolio_steps,
)
from deepcoin.matching.select_rules import _split_train_valid_holdout
from deepcoin.ops.chart_report import (
    card_html,
    go_no_go_table_html,
    market_cards_html,
    pnl_cards_html,
    rule_criteria_html,
    wrap_chart_report_page,
)
from deepcoin.ops.simulation import build_chart_html, load_chart_frames, _frames_to_mtf
from deepcoin.common.indicators import apply_bar_indicators, get_trend
from deepcoin.paths import (
    MATCHING_FIRE_OUTCOMES,
    MATCHING_MATCHED_RULES,
    MATCHING_SIMULATION_HTML,
    resolve_ground_truth_file,
)


def _fires_to_chart_trades(fires: pd.DataFrame) -> list[dict[str, Any]]:
    """
    fire_outcomes 행을 차트 마커용 dict 리스트로 변환.

    Args:
        fires: monitor holdout 발화.

    Returns:
        build_chart_html sim_trades 인자.
    """
    rows: list[dict[str, Any]] = []
    for _, r in fires.iterrows():
        rows.append(
            {
                "dt": str(r["dt"]),
                "action": r["side"],
                "price": float(r["close"]),
                "forward_ret_pct": float(r["forward_ret_pct"]),
                "rule_id": r["rule_id"],
            }
        )
    return rows


def _sim_fire_table_rows(
    fires: pd.DataFrame,
    rules_by_id: dict[str, dict],
    steps: list[dict[str, Any]],
) -> str:
    """
    시뮬 발화 테이블 tbody (GT와 동일하게 총 평가금액 포함).

    Args:
        fires: holdout 체결 발화.
        rules_by_id: rule_id → rule dict.
        steps: simulate_fixed_order_portfolio_steps 결과.

    Returns:
        tr HTML.
    """
    if fires.empty:
        return "<tr><td colspan='8'>발화 없음</td></tr>"
    sorted_fires = fires.sort_values("dt").reset_index(drop=True)
    lines: list[str] = []
    lines.append(
        f"""
        <tr class="initial-row">
          <td>시작</td><td>-</td><td>-</td><td>-</td><td>-</td>
          <td><b>₩{GT_INITIAL_CASH_KRW:,.0f}</b></td>
          <td>-</td><td>초기 현금 (1회 ₩{LIVE_ORDER_KRW:,.0f} 가정)</td>
        </tr>"""
    )
    for i in range(len(sorted_fires)):
        r = sorted_fires.iloc[i]
        side = r["side"]
        cls = "buy" if side == "buy" else "sell"
        mark = "매수" if side == "buy" else "매도"
        ret = float(r["forward_ret_pct"])
        ret_s = f" (+{ret:.2f}%)" if ret > 0 else f" ({ret:.2f}%)"
        win = "승" if int(r.get("win", 0)) else "패"
        win_cls = "pass" if int(r.get("win", 0)) else "fail"
        kind = rules_by_id.get(r["rule_id"], {}).get("kind", "")
        step = steps[i] if i < len(steps) else None
        if step:
            total_s = f"₩{step['total_asset_krw']:,.0f}"
            hold_s = (
                f" (현금 ₩{step['cash_krw']:,.0f} + 코인 {step['holding_qty']:,.2f}개)"
            )
        else:
            total_s = "-"
            hold_s = ""
        lines.append(
            f"<tr>"
            f"<td>{str(r['dt'])[:16]}</td>"
            f'<td class="{cls}">{mark}</td>'
            f"<td>{r['rule_id']}</td>"
            f"<td>{kind}</td>"
            f'<td class="num">₩{float(r["close"]):,.0f}{ret_s}</td>'
            f"<td><b>{total_s}</b>{hold_s}</td>"
            f'<td class="{win_cls}">{win}</td>'
            f"<td>leg_gt 구간 수익</td>"
            f"</tr>"
        )
    return "\n".join(lines)


def _gt_table_rows(trades: list[dict[str, Any]], steps: list[dict[str, Any]]) -> str:
    """
    GT 타점 테이블 tbody (ground_truth 차트와 동일).

    Args:
        trades: ground_truth trades.
        steps: simulate_truth_portfolio_steps.

    Returns:
        tr HTML.
    """
    if not trades:
        return "<tr><td colspan='6'>타점 없음</td></tr>"
    step_key = {
        (s["dt"], s["action"], float(s["price"]), float(s["weight"])): s
        for s in steps
    }
    lines: list[str] = []
    lines.append(
        f"""
        <tr class="initial-row">
          <td>시작</td><td>-</td><td>-</td><td>-</td>
          <td><b>₩{GT_INITIAL_CASH_KRW:,.0f}</b></td>
          <td>초기 현금 (보유 0)</td>
        </tr>"""
    )
    for t in sorted(trades, key=lambda x: x["dt"]):
        cls = "buy" if t["action"] == "buy" else "sell"
        mark = "매수" if t["action"] == "buy" else "매도"
        ret = t.get("forward_return_pct")
        ret_s = f" (+{ret}%)" if ret is not None else ""
        w = float(t.get("weight", 1.0))
        key = (t["dt"], t["action"], float(t["price"]), w)
        step = step_key.get(key)
        if step:
            total_s = f"₩{step['total_asset_krw']:,.0f}"
            hold_s = (
                f" (현금 ₩{step['cash_krw']:,.0f} + 코인 {step['holding_qty']:,.2f}개)"
            )
        else:
            total_s = "-"
            hold_s = ""
        lines.append(
            f"<tr>"
            f"<td>{t['dt'][:16]}</td>"
            f'<td class="{cls}">{mark}</td>'
            f"<td>{w*100:.0f}%</td>"
            f"<td>₩{t['price']:,.0f}{ret_s}</td>"
            f"<td><b>{total_s}</b>{hold_s}</td>"
            f"<td>{t.get('memo', '')}</td>"
            f"</tr>"
        )
    return "\n".join(lines)


def _summary_cards_html(
    close_last: float,
    bb_txt: str,
    gt_trades: list[dict[str, Any]],
    gt_pnl: dict[str, Any],
    sim_pnl: dict[str, Any],
    sim_trade_count: int,
    go_flag: bool,
) -> str:
    """
    ground_truth HTML과 동일 구성의 상단 카드 (GT + 시뮬 2줄).

    Args:
        close_last: 종가.
        bb_txt: BB %B.
        gt_trades: GT trades.
        gt_pnl: GT 포트폴리오 요약.
        sim_pnl: 시뮬 포트폴리오 요약.
        sim_trade_count: 체결 가정 발화 수.
        go_flag: Go/No-Go.

    Returns:
        cards HTML.
    """
    go_cls = "go-pass" if go_flag else "go-fail"
    gt_row = (
        '<p class="cards-group-title">정답 (ground_truth) — 분할 비중·leg 체결</p>'
        + market_cards_html(close_last, bb_txt)
        + pnl_cards_html(gt_pnl, "정답 타점", len(gt_trades))
    )
    sim_row = (
        '<p class="cards-group-title">시뮬 (monitor_rules · holdout · '
        f"1회 ₩{LIVE_ORDER_KRW:,.0f}·일한도) — "
        f'<span class="{go_cls}">{"GO" if go_flag else "NO-GO"}</span></p>'
        + pnl_cards_html(sim_pnl, "시뮬 체결", sim_trade_count)
    )
    return gt_row + sim_row


def build_simulation_page_html(
    report: dict[str, Any],
    outcomes_path: Path | None = None,
    matched_path: Path | None = None,
    gt_path: Path | None = None,
    close_last: float | None = None,
) -> str:
    """
    시뮬 리포트 전체 HTML (차트 + Go/No-Go + 규칙 기준 + 타점 테이블).

    Args:
        report: build_simulation_report 결과.
        outcomes_path: fire_outcomes.csv.
        matched_path: matched_rules.json.
        gt_path: ground_truth JSON.
        close_last: 미청산 평가 종가 (None이면 DB 종가).

    Returns:
        HTML 문자열.
    """
    op = outcomes_path or MATCHING_FIRE_OUTCOMES
    mp = matched_path or MATCHING_MATCHED_RULES
    matched: dict[str, Any] = {}
    if mp.is_file():
        matched = json.loads(mp.read_text(encoding="utf-8"))

    monitor_rules = matched.get("monitor_rules") or report.get("monitor_rules") or []
    monitor_ids = {r["rule_id"] for r in monitor_rules}
    rules_by_id = {r["rule_id"]: r for r in monitor_rules}

    holdout_fires = pd.DataFrame()
    if op.is_file():
        outcomes = pd.read_csv(op)
        outcomes["split"] = _split_train_valid_holdout(outcomes)
        holdout_fires = outcomes[
            (outcomes["rule_id"].isin(monitor_ids)) & (outcomes["split"] == "holdout")
        ].copy()

    capped = select_capped_fires(holdout_fires)

    gt_data = load_ground_truth(gt_path or resolve_ground_truth_file()) or {}
    gt_trades = gt_data.get("trades") or []
    gt_summary = gt_data.get("summary") or {}

    go = report.get("go_no_go", {})
    go_flag = bool(go.get("go"))
    label_mode = report.get("label_mode", "leg_gt")

    frames = load_chart_frames()
    bb_txt = "-"
    trend = "-"
    close_val = float(close_last or 0)
    if frames is not None:
        df_1d, df_1h, df_3m = _frames_to_mtf(frames)
        trend = get_trend(df_1d, df_1h)
        df_chart = apply_bar_indicators(df_3m)
        close_val = float(df_chart["Close"].iloc[-1])
        bb_pos = (
            float(df_chart["bb_pos"].iloc[-1])
            if "bb_pos" in df_chart.columns and pd.notna(df_chart["bb_pos"].iloc[-1])
            else None
        )
        bb_txt = f"{bb_pos:.2f}" if bb_pos is not None else "-"
    elif gt_summary.get("mark_price"):
        close_val = float(gt_summary["mark_price"])

    sim_trades = fires_to_trade_list(capped)
    gt_pnl = {}
    gt_summary_pnl = gt_data.get("summary") or {}
    if gt_summary_pnl.get("pnl_krw") is not None and gt_summary_pnl.get(
        "execution_order"
    ) == "leg_block":
        gt_pnl = {
            k: gt_summary_pnl[k]
            for k in (
                "initial_cash_krw",
                "final_asset_krw",
                "pnl_pct",
                "total_fees_krw",
                "holding_qty",
                "holding_value_krw",
                "mark_price",
                "cash_krw",
            )
            if k in gt_summary_pnl
        }
    elif gt_trades:
        gt_pnl = simulate_truth_portfolio(
            gt_trades,
            initial_cash=GT_INITIAL_CASH_KRW,
            fee_rate=TRADING_FEE_RATE,
            last_price=close_val if close_val else None,
        )

    sim_pnl = simulate_fixed_order_portfolio(
        sim_trades,
        order_krw=LIVE_ORDER_KRW,
        initial_cash=GT_INITIAL_CASH_KRW,
        fee_rate=TRADING_FEE_RATE,
        last_price=close_val if close_val else None,
    )
    sim_steps = simulate_fixed_order_portfolio_steps(
        sim_trades,
        order_krw=LIVE_ORDER_KRW,
        initial_cash=GT_INITIAL_CASH_KRW,
        fee_rate=TRADING_FEE_RATE,
    )
    gt_steps = (
        simulate_truth_portfolio_steps(
            gt_trades,
            initial_cash=GT_INITIAL_CASH_KRW,
            fee_rate=TRADING_FEE_RATE,
        )
        if gt_trades
        else []
    )

    criteria_blocks = "".join(rule_criteria_html(r) for r in monitor_rules)
    go_table = go_no_go_table_html(go.get("checks", []), go_flag)

    def _mark_note(price: float) -> str:
        if price > 0:
            return f" 총보유자산(미청산 포함)은 종가 ₩{price:,.0f} 평가."
        return ""

    sim_table = f"""
  <h2>시뮬 타점 (holdout {len(holdout_fires)}건 → 체결 가정 {len(capped)}건)</h2>
  <p class="meta">1회 ₩{LIVE_ORDER_KRW:,.0f}·일한도·최대 거래수 적용 후 체결 순 포트폴리오.
  가격 열 (+/-) = <b>{label_mode}</b> 구간 수익%.{_mark_note(close_val)}</p>
  <div class="table-scroll">
  <table>
    <thead><tr><th>시각</th><th>구분</th><th>규칙</th><th>유형</th><th>가격</th>
    <th>총 평가금액</th><th>승/패</th><th>비고</th></tr></thead>
    <tbody>{_sim_fire_table_rows(capped, rules_by_id, sim_steps)}</tbody>
  </table>
  </div>"""

    gt_table = f"""
  <h2>정답 타점 (ground_truth)</h2>
  <p class="meta">삼각형 = GT. 매수 분할 비중·매도 leg 반영.{_mark_note(close_val)}</p>
  <div class="table-scroll">
  <table>
    <thead><tr><th>시각</th><th>구분</th><th>비중</th><th>가격</th><th>총 평가금액</th><th>해석</th></tr></thead>
    <tbody>{_gt_table_rows(gt_trades, gt_steps)}</tbody>
  </table>
  </div>"""

    sections = f"""
  {go_table}
  <h2>매수·매도 판단 기준 (monitor_rules)</h2>
  <p class="meta">04 GT 프로필 + 전구간 EV 선별. 조건 <b>모두</b> 충족 시 3분봉 종가에 신호.</p>
  {criteria_blocks}
  {sim_table}
  {gt_table}
"""

    note = (
        f"1단계 시뮬 · holdout {report.get('holdout_ratio', 0.15)} · "
        f"발화 {len(holdout_fires)}건 / 체결가정 {len(capped)}건. "
        "상단 카드: 초기 금액·총보유자산·초기 대비 증감율·수수료."
    )
    legend = (
        "▲ <b>정답 매수</b> · ▼ <b>정답 매도</b> — 삼각형 = GT 비중.<br>"
        "● <b>시뮬</b> — 원 = holdout 발화 (차트). 테이블 = 일한도 적용 체결 순서."
    )
    if frames is not None:
        meta_line = (
            f"추세(참고): {trend} | 기간: {df_chart.index[0]} ~ {df_chart.index[-1]} "
            f"| 봉 {len(df_chart)}"
        )
    else:
        meta_line = (
            f"추세·{SYMBOL} | lookback {CHART_LOOKBACK_DAYS}일 | "
            f"초기 ₩{GT_INITIAL_CASH_KRW:,.0f}"
        )

    cards = _summary_cards_html(
        close_val, bb_txt, gt_trades, gt_pnl, sim_pnl, len(capped), go_flag
    )

    if frames is not None:
        return build_chart_html(
            df_chart,
            trend,
            note=note,
            truth_trades=gt_trades,
            sim_trades=_fires_to_chart_trades(holdout_fires),
            title_suffix="1단계 시뮬레이션 (monitor · holdout)",
            legend_html=legend,
            footer_sections=sections,
            cards_html=cards,
        )

    return wrap_chart_report_page(
        page_title=f"{SYMBOL} 시뮬레이션",
        heading=f"{COIN_NAME} ({SYMBOL}) 1단계 시뮬레이션",
        meta_line=meta_line,
        note_html=f"<p class='note'>{note}</p>",
        legend_html=legend,
        cards_html=cards,
        chart_html=(
            "<p class='note'>차트 데이터 없음 — "
            "<code>python scripts/01_download.py</code> 후 재생성.</p>"
        ),
        sections_html=sections,
    )


def write_simulation_report_html(
    report: dict[str, Any],
    out_path: Path,
    outcomes_path: Path | None = None,
    matched_path: Path | None = None,
) -> Path:
    """
    simulation_report.html 저장 (ground_truth 동일 스타일).

    Args:
        report: build_simulation_report 결과.
        out_path: HTML 경로.
        outcomes_path: fire_outcomes.csv.
        matched_path: matched_rules.json.

    Returns:
        out_path.
    """
    html = build_simulation_page_html(report, outcomes_path, matched_path)
    out_path.parent.mkdir(parents=True, exist_ok=True)
    out_path.write_text(html, encoding="utf-8")
    return out_path