"""Generator pentru data/backtest.xlsx.

5 strategii de management comparate side-by-side pe semnale blackbox:
  - TP0 only       : 100% close la TP0
  - TP1 only       : 100% OCO la SL/TP1
  - TP2 only       : 100% OCO la SL/TP2
  - Hybrid + BE    : 50% TP0 + mut SL la BE + 50% TP1 (recomandat de trader)
  - Hybrid no BE   : 50% TP0 + 50% TP1, fără BE (control pentru a izola valoarea BE-ului)

Rulare:
    pip install openpyxl
    python scripts/generate_template.py
"""

from __future__ import annotations

from datetime import date, time
from pathlib import Path

from openpyxl import Workbook
from openpyxl.chart import LineChart, Reference
from openpyxl.formatting.rule import CellIsRule
from openpyxl.styles import Alignment, Border, Font, PatternFill, Side
from openpyxl.utils import get_column_letter
from openpyxl.worksheet.datavalidation import DataValidation


OUTPUT = Path(__file__).resolve().parent.parent / "data" / "backtest.xlsx"
MAX_ROWS = 500  # rânduri pre-completate cu formule în sheet-ul Trades

# ---------------------------------------------------------------------------
# Styles
# ---------------------------------------------------------------------------

HEADER_FILL = PatternFill("solid", fgColor="1F3864")
HEADER_FONT = Font(name="Calibri", size=11, bold=True, color="FFFFFF")
INPUT_FILL = PatternFill("solid", fgColor="FFF8E1")
DERIVED_FILL = PatternFill("solid", fgColor="E8F1FA")
HIDDEN_FILL = PatternFill("solid", fgColor="F0F0F0")
TITLE_FONT = Font(name="Calibri", size=16, bold=True, color="1F3864")
SUBTITLE_FONT = Font(name="Calibri", size=12, bold=True, color="1F3864")
THIN = Side(border_style="thin", color="BFBFBF")
BORDER = Border(left=THIN, right=THIN, top=THIN, bottom=THIN)
CENTER = Alignment(horizontal="center", vertical="center")
LEFT = Alignment(horizontal="left", vertical="center")
RIGHT = Alignment(horizontal="right", vertical="center")


# ---------------------------------------------------------------------------
# Lists
# ---------------------------------------------------------------------------

STRATEGIES = ["M2D", "EMA cross", "Order block", "Liquidity sweep", "Custom"]
SESSIONS = ["A1", "A2", "A3", "B", "C", "D", "Other"]
INDICATORS = ["DIA", "US30", "SPY", "QQQ", "ES", "NQ"]
TIMEFRAMES = ["1min", "3min", "15min"]
DIRECTIONS = ["Buy", "Sell"]
OUTCOMES = ["SL", "TP0 only", "TP1", "TP2"]

# Cele 5 strategii de management (sufix folosit în numele coloanelor) + label friendly
STRAT_KEYS = ["tp0only", "tp1only", "tp2only", "hybrid_be", "hybrid_nobe"]
STRAT_LABELS = {
    "tp0only": "TP0 only",
    "tp1only": "TP1 only",
    "tp2only": "TP2 only",
    "hybrid_be": "Hybrid + BE",
    "hybrid_nobe": "Hybrid no BE",
}

# ---------------------------------------------------------------------------
# Trades sheet — schema
# ---------------------------------------------------------------------------

INPUT_HEADERS = [
    "#", "Data", "Ora RO", "Zi", "Sesiune",
    "Strategie", "Indicator", "TF",
    "Direcție", "SL %", "TP0 %", "TP1 %", "TP2 %",
    "Outcome", "Notes",
]
DERIVED_HEADERS = (
    [f"R_{s}" for s in STRAT_KEYS]
    + [f"$_{s}" for s in STRAT_KEYS]
    + [f"Bal_{s}" for s in STRAT_KEYS]
)
HELPER_HEADERS = (
    [f"Win_{s}" for s in STRAT_KEYS]
    + [f"Peak_{s}" for s in STRAT_KEYS]
    + [f"DD_{s}" for s in STRAT_KEYS]
)
TRADES_HEADERS = INPUT_HEADERS + DERIVED_HEADERS + HELPER_HEADERS

# Mapă nume → literă coloană Excel
COL = {name: get_column_letter(i + 1) for i, name in enumerate(TRADES_HEADERS)}


# ---------------------------------------------------------------------------
# Helpers
# ---------------------------------------------------------------------------


def _col_to_int(letter: str) -> int:
    n = 0
    for ch in letter:
        n = n * 26 + (ord(ch) - ord("A") + 1)
    return n


# ---------------------------------------------------------------------------
# Config sheet
# ---------------------------------------------------------------------------


def build_config(wb: Workbook) -> None:
    ws = wb.create_sheet("Config", 0)
    ws.sheet_view.showGridLines = False

    ws["A1"] = "Config — editează doar celulele galbene"
    ws["A1"].font = TITLE_FONT
    ws.merge_cells("A1:C1")

    ws["A3"] = "Setting"
    ws["B3"] = "Value"
    ws["C3"] = "Note"
    for c in ("A3", "B3", "C3"):
        ws[c].font = HEADER_FONT
        ws[c].fill = HEADER_FILL
        ws[c].alignment = CENTER

    ws["A4"] = "Account Size Start ($)"
    ws["B4"] = 10000
    ws["C4"] = "Balanța inițială pentru calcule $ și HWM"

    ws["A5"] = "Risk per Trade (%)"
    ws["B5"] = 1.0
    ws["C5"] = "% din account riscat per trade (= -1R)"

    ws["A6"] = "Risk per Trade ($)"
    ws["B6"] = "=B4*B5/100"
    ws["C6"] = "Auto — derivat din B4 și B5"

    for r in (4, 5):
        ws.cell(row=r, column=2).fill = INPUT_FILL
        ws.cell(row=r, column=2).border = BORDER
    ws["B6"].fill = DERIVED_FILL
    ws["B6"].border = BORDER
    ws["B4"].number_format = "$#,##0"
    ws["B5"].number_format = '0.0"%"'
    ws["B6"].number_format = "$#,##0.00"

    # Liste dropdown — coloanele E–J (6 coloane)
    list_columns = [
        ("Strategii", STRATEGIES),
        ("Sesiuni (auto)", SESSIONS),
        ("Indicatori", INDICATORS),
        ("TF", TIMEFRAMES),
        ("Direcție", DIRECTIONS),
        ("Outcome", OUTCOMES),
    ]
    for col_idx, (label, values) in enumerate(list_columns, start=5):
        cell = ws.cell(row=3, column=col_idx, value=label)
        cell.font = HEADER_FONT
        cell.fill = HEADER_FILL
        cell.alignment = CENTER
        for row_idx, v in enumerate(values, start=4):
            c = ws.cell(row=row_idx, column=col_idx, value=v)
            c.alignment = CENTER

    widths = {
        "A": 24, "B": 14, "C": 38, "D": 2,
        "E": 14, "F": 14, "G": 13, "H": 10, "I": 10, "J": 12,
    }
    for col, w in widths.items():
        ws.column_dimensions[col].width = w


# ---------------------------------------------------------------------------
# Formula builders pentru Trades sheet
# ---------------------------------------------------------------------------


def _f_day(r: int) -> str:
    d = f'{COL["Data"]}{r}'
    return (
        f'=IF({d}="","",'
        f'CHOOSE(WEEKDAY({d},2),"Lu","Ma","Mi","Jo","Vi","Sa","Du"))'
    )


def _f_session(r: int) -> str:
    """Derivă Sesiunea M2D din Data + Ora RO."""
    d = f'{COL["Data"]}{r}'
    t = f'{COL["Ora RO"]}{r}'
    wd = f"WEEKDAY({d},2)"
    mid_week = f"AND({wd}>=2,{wd}<=4)"
    return (
        f'=IF(OR({d}="",{t}=""),"",'
        f"IF(OR({wd}=1,{wd}=5),\"D\","
        f'IF(AND({t}>=TIME(15,30,0),{t}<TIME(16,30,0)),"C",'
        f'IF(AND({mid_week},{t}>=TIME(16,35,0),{t}<TIME(17,0,0)),"A1",'
        f'IF(AND({mid_week},{t}>=TIME(17,0,0),{t}<TIME(18,0,0)),"A2",'
        f'IF(AND({mid_week},{t}>=TIME(18,0,0),{t}<TIME(19,0,0)),"A3",'
        f'IF(AND({mid_week},{t}>=TIME(22,0,0),{t}<TIME(22,45,0)),"B",'
        f'"Other")))))))'
    )


def _f_r_tp0only(r: int) -> str:
    o = f'{COL["Outcome"]}{r}'
    sl = f'{COL["SL %"]}{r}'
    tp0 = f'{COL["TP0 %"]}{r}'
    return f'=IF({o}="","",IF({o}="SL",-1,{tp0}/{sl}))'


def _f_r_tp1only(r: int) -> str:
    o = f'{COL["Outcome"]}{r}'
    sl = f'{COL["SL %"]}{r}'
    tp1 = f'{COL["TP1 %"]}{r}'
    return (
        f'=IF({o}="","",'
        f'IF(OR({o}="SL",{o}="TP0 only"),-1,{tp1}/{sl}))'
    )


def _f_r_tp2only(r: int) -> str:
    o = f'{COL["Outcome"]}{r}'
    sl = f'{COL["SL %"]}{r}'
    tp2 = f'{COL["TP2 %"]}{r}'
    return f'=IF({o}="","",IF({o}="TP2",{tp2}/{sl},-1))'


def _f_r_hybrid_be(r: int) -> str:
    o = f'{COL["Outcome"]}{r}'
    sl = f'{COL["SL %"]}{r}'
    tp0 = f'{COL["TP0 %"]}{r}'
    tp1 = f'{COL["TP1 %"]}{r}'
    return (
        f'=IF({o}="","",'
        f'IF({o}="SL",-1,'
        f'IF({o}="TP0 only",0.5*{tp0}/{sl},'
        f'0.5*({tp0}+{tp1})/{sl})))'
    )


def _f_r_hybrid_nobe(r: int) -> str:
    o = f'{COL["Outcome"]}{r}'
    sl = f'{COL["SL %"]}{r}'
    tp0 = f'{COL["TP0 %"]}{r}'
    tp1 = f'{COL["TP1 %"]}{r}'
    return (
        f'=IF({o}="","",'
        f'IF({o}="SL",-1,'
        f'IF({o}="TP0 only",0.5*{tp0}/{sl}-0.5,'
        f'0.5*({tp0}+{tp1})/{sl})))'
    )


R_FN: dict[str, callable] = {
    "tp0only": _f_r_tp0only,
    "tp1only": _f_r_tp1only,
    "tp2only": _f_r_tp2only,
    "hybrid_be": _f_r_hybrid_be,
    "hybrid_nobe": _f_r_hybrid_nobe,
}


def _f_dollar(r: int, r_col: str) -> str:
    rc = f"{COL[r_col]}{r}"
    return f'=IF({rc}="","",{rc}*Config!$B$6)'


def _f_balance(r: int, dollar_col: str) -> str:
    dc = COL[dollar_col]
    return f'=IF({dc}{r}="","",Config!$B$4 + SUM(${dc}$2:{dc}{r}))'


def _f_win(r: int, r_col: str) -> str:
    rc = f"{COL[r_col]}{r}"
    return f'=IF({rc}="","",IF({rc}>0,1,0))'


def _f_peak(r: int, balance_col: str, peak_col: str) -> str:
    bc = COL[balance_col]
    pc = COL[peak_col]
    if r == 2:
        return f'=IF({bc}{r}="","",{bc}{r})'
    return (
        f'=IF({bc}{r}="","",'
        f'IF({pc}{r-1}="",{bc}{r},MAX({pc}{r-1},{bc}{r})))'
    )


def _f_drawdown(r: int, peak_col: str, balance_col: str) -> str:
    pc = f"{COL[peak_col]}{r}"
    bc = f"{COL[balance_col]}{r}"
    return f'=IF({bc}="","",{pc}-{bc})'


# ---------------------------------------------------------------------------
# Trades sheet
# ---------------------------------------------------------------------------


def build_trades(wb: Workbook) -> None:
    ws = wb.create_sheet("Trades", 1)
    ws.sheet_view.showGridLines = False
    ws.freeze_panes = "B2"

    # Headers
    for col_idx, header in enumerate(TRADES_HEADERS, start=1):
        cell = ws.cell(row=1, column=col_idx, value=header)
        cell.font = HEADER_FONT
        cell.fill = HEADER_FILL
        cell.alignment = CENTER
        cell.border = BORDER

    # Formule pe toate rândurile pre-pregătite
    for r in range(2, MAX_ROWS + 2):
        ws.cell(row=r, column=1, value="=ROW()-1")
        ws[f'{COL["Zi"]}{r}'] = _f_day(r)
        ws[f'{COL["Sesiune"]}{r}'] = _f_session(r)

        for strat in STRAT_KEYS:
            ws[f'{COL[f"R_{strat}"]}{r}'] = R_FN[strat](r)
            ws[f'{COL[f"$_{strat}"]}{r}'] = _f_dollar(r, f"R_{strat}")
            ws[f'{COL[f"Bal_{strat}"]}{r}'] = _f_balance(r, f"$_{strat}")
            ws[f'{COL[f"Win_{strat}"]}{r}'] = _f_win(r, f"R_{strat}")
            ws[f'{COL[f"Peak_{strat}"]}{r}'] = _f_peak(
                r, f"Bal_{strat}", f"Peak_{strat}"
            )
            ws[f'{COL[f"DD_{strat}"]}{r}'] = _f_drawdown(
                r, f"Peak_{strat}", f"Bal_{strat}"
            )

    # Sample row 2
    ws["B2"] = date(2026, 5, 13)
    ws["C2"] = time(17, 33)
    ws[f'{COL["Strategie"]}2'] = "M2D"
    ws[f'{COL["Indicator"]}2'] = "DIA"
    ws[f'{COL["TF"]}2'] = "1min"
    ws[f'{COL["Direcție"]}2'] = "Sell"
    ws[f'{COL["SL %"]}2'] = 0.30
    ws[f'{COL["TP0 %"]}2'] = 0.10
    ws[f'{COL["TP1 %"]}2'] = 0.15
    ws[f'{COL["TP2 %"]}2'] = 0.30
    ws[f'{COL["Outcome"]}2'] = "TP1"
    ws[f'{COL["Notes"]}2'] = "Exemplu — șterge când începi"

    # Number formats
    for col_name in ("SL %", "TP0 %", "TP1 %", "TP2 %"):
        for r in range(2, MAX_ROWS + 2):
            ws[f"{COL[col_name]}{r}"].number_format = '0.000"%"'

    for strat in STRAT_KEYS:
        for r in range(2, MAX_ROWS + 2):
            ws[f"{COL[f'R_{strat}']}{r}"].number_format = "+0.000;-0.000;0.000"
            for prefix in ("$_", "Bal_", "Peak_", "DD_"):
                ws[f"{COL[f'{prefix}{strat}']}{r}"].number_format = '"$"#,##0.00'

    for r in range(2, MAX_ROWS + 2):
        ws[f"B{r}"].number_format = "yyyy-mm-dd"

    # Coloring
    input_letters = {
        COL[n]
        for n in (
            "Data", "Ora RO", "Strategie", "Indicator", "TF",
            "Direcție", "SL %", "TP0 %", "TP1 %", "TP2 %",
            "Outcome", "Notes",
        )
    }
    derived_letters = {COL["Zi"], COL["Sesiune"]}
    for strat in STRAT_KEYS:
        derived_letters.add(COL[f"R_{strat}"])
        derived_letters.add(COL[f"$_{strat}"])
        derived_letters.add(COL[f"Bal_{strat}"])
    helper_letters = set()
    for strat in STRAT_KEYS:
        for prefix in ("Win_", "Peak_", "DD_"):
            helper_letters.add(COL[f"{prefix}{strat}"])

    for r in range(2, MAX_ROWS + 2):
        for cl in input_letters:
            ws[f"{cl}{r}"].fill = INPUT_FILL
        for cl in derived_letters:
            ws[f"{cl}{r}"].fill = DERIVED_FILL
        for cl in helper_letters:
            ws[f"{cl}{r}"].fill = HIDDEN_FILL

    # Column widths
    widths = {
        "A": 5, "B": 12, "C": 9, "D": 5, "E": 9,
        "F": 12, "G": 11, "H": 8, "I": 9,
        "J": 9, "K": 9, "L": 9, "M": 9,
        "N": 11, "O": 28,
    }
    for col, w in widths.items():
        ws.column_dimensions[col].width = w
    # Derived + helper: width 11
    for strat in STRAT_KEYS:
        for prefix in ("R_", "$_", "Bal_", "Win_", "Peak_", "DD_"):
            ws.column_dimensions[COL[f"{prefix}{strat}"]].width = 11

    # Data validation dropdowns
    def _add_dv(col_name: str, source: str) -> None:
        cl = COL[col_name]
        dv = DataValidation(
            type="list", formula1=source,
            allow_blank=True, showErrorMessage=True,
        )
        dv.error = "Valoare invalidă — folosește dropdown-ul."
        dv.errorTitle = "Input invalid"
        dv.add(f"{cl}2:{cl}{MAX_ROWS + 1}")
        ws.add_data_validation(dv)

    # Config columns: E=Strategii, F=Sesiuni, G=Indicatori, H=TF, I=Direcție, J=Outcome
    _add_dv("Strategie", "=Config!$E$4:$E$8")
    _add_dv("Indicator", "=Config!$G$4:$G$9")
    _add_dv("TF", "=Config!$H$4:$H$6")
    _add_dv("Direcție", "=Config!$I$4:$I$5")
    _add_dv("Outcome", "=Config!$J$4:$J$7")

    # Conditional formatting pe coloanele R (5 strategii)
    green_fill = PatternFill("solid", fgColor="C6EFCE")
    red_fill = PatternFill("solid", fgColor="FFC7CE")
    grey_fill = PatternFill("solid", fgColor="D9D9D9")
    for strat in STRAT_KEYS:
        cl = COL[f"R_{strat}"]
        rng = f"{cl}2:{cl}{MAX_ROWS + 1}"
        ws.conditional_formatting.add(
            rng, CellIsRule(operator="greaterThan", formula=["0"], fill=green_fill)
        )
        ws.conditional_formatting.add(
            rng, CellIsRule(operator="lessThan", formula=["0"], fill=red_fill)
        )
        ws.conditional_formatting.add(
            rng, CellIsRule(operator="equal", formula=["0"], fill=grey_fill)
        )


# ---------------------------------------------------------------------------
# Dashboard sheet
# ---------------------------------------------------------------------------


def _range(col_name: str) -> str:
    cl = COL[col_name]
    return f"Trades!${cl}$2:${cl}${MAX_ROWS + 1}"


METRIC_HINTS: dict[str, str] = {
    "Trades Placed": (
        "Câte trade-uri ai logat în total.\n"
        "Cu cât N e mai mare, cu atât celelalte metrici sunt mai de încredere.\n"
        "Exemplu: la N=10 Win Ratio e zgomot pur, la N=40 începe să aibă semnal, la N=100 e solid."
    ),
    "Wins": (
        "Câte trade-uri s-au închis pe plus (R > 0).\n"
        "Singur nu spune nimic — privește-l raportat la total (vezi Win Ratio mai jos)."
    ),
    "Win Ratio": (
        "Procentul de trade-uri câștigătoare. WR = 60% înseamnă 6 wins din 10 trade-uri.\n"
        "Singur NU spune dacă strategia e profitabilă — citește-l împreună cu R:R de pe rândul următor."
    ),
    "Average Win ($)": (
        "Câștigul mediu pe trade-urile pozitive.\n"
        "Comparat cu Average Loss îți spune cât de mari sunt câștigurile vs pierderile.\n"
        "Exemplu: 4 wins de $50 și 2 wins de $80 — Average Win = $60."
    ),
    "Average Loss ($)": (
        "Pierderea medie pe trade-urile negative (cifra apare cu minus).\n"
        "Cu Risk per Trade fix, ar trebui să fie aproape de −1R în dolari.\n"
        "Dacă e mult mai mare decât Risk per Trade, ai SL-uri sărite (slippage, gap-uri)."
    ),
    "Best Trade ($)": (
        "Cel mai mare câștig individual.\n"
        "Dacă majoritatea profitului total vine dintr-un singur trade outlier, edge-ul e fragil — "
        "elimini acel trade și strategia devine pierzătoare."
    ),
    "Worst Trade ($)": (
        "Cea mai mare pierdere individuală.\n"
        "Ar trebui să fie aproximativ egală cu −1R (Risk per Trade din Config).\n"
        "Dacă e semnificativ mai mare, ai depășit risk-ul plănuit — SL ratat, slippage, gap overnight."
    ),
    "Profit Factor": (
        "Total bani câștigați împărțit la total bani pierduți (în valoare absolută).\n"
        "Sub 1.0 = pierzi pe ansamblu. Peste 1.5 = solid. Peste 2.0 = câștigi de 2× cât pierzi.\n"
        "Exemplu: 4 wins de $50 (= $200) + 6 losses de $30 (= $180) — PF = 200÷180 = 1.11, profitabil marginal."
    ),
    "Risk:Reward": (
        "De câte ori e mai mare câștigul mediu decât pierderea medie.\n"
        "R:R = 2 înseamnă: când câștigi, câștigi $2; când pierzi, pierzi $1.\n"
        "Cu R:R mare poți avea Win Ratio mic și tot să faci bani."
    ),
    "Expectancy (R)": (
        "Cât bani câștigi în medie pe UN trade (în R; 1R = Risk per Trade, default $100).\n"
        "+0.30R = câștigi $30 pe trade. Pe 100 trade-uri: +$3.000.\n"
        "−0.10R = pierzi $10 pe trade. Pe 100 trade-uri: −$1.000.\n"
        "Pragul de GO LIVE: +0.20R sau mai mult."
    ),
    "Expectancy ($)": (
        "Aceeași expectancy convertită în dolari, folosind Risk per Trade din Config.\n"
        "Util ca să vezi cât câștigi în medie pe trade în bani reali, nu doar în R."
    ),
    "Cumulative P&L ($)": (
        "Suma profitului și pierderii pe toate trade-urile logate.\n"
        "E ce-ai avea în plus (sau minus) față de balanța de start din Config."
    ),
    "HWM Balance ($)": (
        "Highest Watermark — cea mai mare balanță atinsă vreodată în jurnal.\n"
        "Punct de referință pentru calculul drawdown-ului."
    ),
    "Max Drawdown ($)": (
        "Cea mai mare cădere ($) din vârf la fundul ulterior al balanței. Măsoară durerea psihologică maximă.\n"
        "Exemplu: ai urcat la $11,500, ai coborât la $9,800 — DD = $1,700, adică 17% din peak.\n"
        "Un drawdown mare la backtest e foarte greu de tolerat în live cu bani reali — așteaptă-te să renunți."
    ),
}


def build_dashboard(wb: Workbook) -> None:
    ws = wb.create_sheet("Dashboard", 2)
    ws.sheet_view.showGridLines = False

    ws["A1"] = "Backtest Dashboard"
    ws["A1"].font = TITLE_FONT
    ws.merge_cells("A1:G1")

    ws["A2"] = (
        "Comparație 5 strategii management — pe aceleași semnale blackbox"
    )
    ws["A2"].font = Font(name="Calibri", size=10, italic=True, color="595959")
    ws.merge_cells("A2:G2")

    # Row 4: headers (5 columns B-F pentru strategii + G pentru "Cum citesc")
    ws["A4"] = "Metric"
    strat_cols = {}  # strat_key → column letter (B/C/D/E/F)
    for i, strat in enumerate(STRAT_KEYS):
        letter = get_column_letter(2 + i)
        strat_cols[strat] = letter
        ws[f"{letter}4"] = STRAT_LABELS[strat]
    ws["G4"] = "Cum citesc"
    for letter in ["A"] + list(strat_cols.values()) + ["G"]:
        c = ws[f"{letter}4"]
        c.font = HEADER_FONT
        c.fill = HEADER_FILL
        c.alignment = CENTER
        c.border = BORDER

    # Ranges per strategie
    R = {s: _range(f"R_{s}") for s in STRAT_KEYS}
    D = {s: _range(f"$_{s}") for s in STRAT_KEYS}
    W = {s: _range(f"Win_{s}") for s in STRAT_KEYS}
    BAL = {s: _range(f"Bal_{s}") for s in STRAT_KEYS}
    DD = {s: _range(f"DD_{s}") for s in STRAT_KEYS}
    OUTCOME_RANGE = _range("Outcome")

    # Metric rows — fiecare metric e un dict cu per-strategy formula + format
    metrics: list[tuple[str, callable, str]] = [
        # (label, fn(strat_key) -> formula, number_format)
        ("Trades Placed", lambda s: f'=COUNTA({OUTCOME_RANGE})', "0"),
        ("Wins", lambda s: f'=COUNTIF({W[s]},1)', "0"),
        ("Average Win ($)", lambda s: f'=IFERROR(AVERAGEIF({D[s]},">0"),0)', '"$"#,##0.00'),
        ("Average Loss ($)", lambda s: f'=IFERROR(AVERAGEIF({D[s]},"<0"),0)', '"$"#,##0.00'),
        ("Best Trade ($)", lambda s: f'=IFERROR(MAX({D[s]}),0)', '"$"#,##0.00'),
        ("Worst Trade ($)", lambda s: f'=IFERROR(MIN({D[s]}),0)', '"$"#,##0.00'),
        ("Profit Factor", lambda s: f'=IFERROR(SUMIF({D[s]},">0")/ABS(SUMIF({D[s]},"<0")),0)', "0.00"),
        # Win Ratio: depends on Wins + Trades Placed — handled after metrics list (placeholder)
        ("Win Ratio", lambda s: None, "0.0%"),
        # Risk:Reward — placeholder; bazat pe rândurile Avg Win/Loss
        ("Risk:Reward", lambda s: None, "0.00"),
        ("Expectancy (R)", lambda s: f'=IFERROR(AVERAGE({R[s]}),0)', "+0.000;-0.000;0.000"),
        ("Expectancy ($)", lambda s: f'=IFERROR(AVERAGE({D[s]}),0)', '"$"#,##0.00'),
        ("Cumulative P&L ($)", lambda s: f'=SUM({D[s]})', '"$"#,##0.00'),
        # HWM — placeholder cu ref la Trades Placed (row 5)
        ("HWM Balance ($)", lambda s: None, '"$"#,##0.00'),
        ("Max Drawdown ($)", lambda s: f'=IFERROR(MAX({DD[s]}),0)', '"$"#,##0.00'),
    ]

    # Determine row indexes pentru formule speciale (depind de poziție)
    label_to_row = {label: 5 + idx for idx, (label, _, _) in enumerate(metrics)}
    trades_row = label_to_row["Trades Placed"]
    wins_row = label_to_row["Wins"]
    avg_win_row = label_to_row["Average Win ($)"]
    avg_loss_row = label_to_row["Average Loss ($)"]

    for idx, (label, fn, fmt) in enumerate(metrics):
        r = 5 + idx
        ws[f"A{r}"] = label
        ws[f"A{r}"].font = Font(name="Calibri", size=11, bold=True)
        ws[f"A{r}"].border = BORDER
        ws[f"A{r}"].alignment = LEFT
        for strat in STRAT_KEYS:
            letter = strat_cols[strat]
            if label == "Win Ratio":
                formula = f"=IFERROR({letter}{wins_row}/{letter}{trades_row},0)"
            elif label == "Risk:Reward":
                formula = f"=IFERROR({letter}{avg_win_row}/ABS({letter}{avg_loss_row}),0)"
            elif label == "HWM Balance ($)":
                formula = (
                    f"=IF({letter}{trades_row}=0,Config!$B$4,MAX({BAL[strat]}))"
                )
            else:
                formula = fn(strat)
            cell = ws[f"{letter}{r}"]
            cell.value = formula
            cell.number_format = fmt
            cell.fill = DERIVED_FILL
            cell.border = BORDER
            cell.alignment = RIGHT
        # Coloana G — interpretare narativă + exemplu numeric
        hint_cell = ws[f"G{r}"]
        hint_cell.value = METRIC_HINTS.get(label, "")
        hint_cell.font = Font(name="Calibri", size=10, color="595959")
        hint_cell.alignment = Alignment(horizontal="left", vertical="top", wrap_text=True)
        hint_cell.border = BORDER

    # Helper pentru a emite un block breakdown (per Sesiune / Strategie / etc.)
    def _emit_breakdown(
        start_row: int, title: str, first_col_label: str,
        items: list[str], item_range: str, overlay_strat: str,
    ) -> int:
        ws[f"A{start_row}"] = title
        ws[f"A{start_row}"].font = SUBTITLE_FONT
        ws.merge_cells(f"A{start_row}:F{start_row}")
        headers = [first_col_label, "N", "Wins", "WR", "Expectancy R", "Cum $"]
        for col_idx, h in enumerate(headers, start=1):
            c = ws.cell(row=start_row + 1, column=col_idx, value=h)
            c.font = HEADER_FONT
            c.fill = HEADER_FILL
            c.alignment = CENTER
            c.border = BORDER
        for i, item in enumerate(items):
            r = start_row + 2 + i
            ws[f"A{r}"] = item
            ws[f"B{r}"] = f'=COUNTIF({item_range},"{item}")'
            ws[f"C{r}"] = f'=COUNTIFS({item_range},"{item}",{W[overlay_strat]},1)'
            ws[f"D{r}"] = f"=IFERROR(C{r}/B{r},0)"
            ws[f"E{r}"] = (
                f'=IFERROR(AVERAGEIFS({R[overlay_strat]},{item_range},"{item}"),0)'
            )
            ws[f"F{r}"] = f'=SUMIFS({D[overlay_strat]},{item_range},"{item}")'
            ws[f"B{r}"].number_format = "0"
            ws[f"C{r}"].number_format = "0"
            ws[f"D{r}"].number_format = "0.0%"
            ws[f"E{r}"].number_format = "+0.000;-0.000;0.000"
            ws[f"F{r}"].number_format = '"$"#,##0.00'
            for c in ("A", "B", "C", "D", "E", "F"):
                ws[f"{c}{r}"].border = BORDER
                ws[f"{c}{r}"].alignment = RIGHT if c != "A" else LEFT
        return start_row + 2 + len(items)

    # Breakdowns — toate folosesc overlay-ul Hybrid+BE (recomandat de trader)
    overlay = "hybrid_be"
    start = 5 + len(metrics) + 2  # 2 rânduri spațiu după tabelul de metrici
    after_sess = _emit_breakdown(
        start, "PER SESIUNE (overlay: Hybrid + BE)", "Sesiune",
        SESSIONS, _range("Sesiune"), overlay,
    )
    after_strat = _emit_breakdown(
        after_sess + 2, "PER STRATEGIE (overlay: Hybrid + BE)", "Strategie",
        STRATEGIES, _range("Strategie"), overlay,
    )
    after_ind = _emit_breakdown(
        after_strat + 2, "PER INDICATOR (overlay: Hybrid + BE)", "Indicator",
        INDICATORS, _range("Indicator"), overlay,
    )
    _emit_breakdown(
        after_ind + 2, "PER DIRECȚIE (overlay: Hybrid + BE)", "Direcție",
        DIRECTIONS, _range("Direcție"), overlay,
    )

    # Column widths
    widths = {"A": 22, "B": 14, "C": 14, "D": 14, "E": 16, "F": 16, "G": 75}
    for col, w in widths.items():
        ws.column_dimensions[col].width = w

    # Row height pentru rândurile cu hint (cu wrap) — explicații multi-line
    for r in range(5, 5 + len(metrics)):
        ws.row_dimensions[r].height = 75

    # Equity curve chart — 5 linii
    chart = LineChart()
    chart.title = "Equity Curve — 5 strategii"
    chart.style = 12
    chart.y_axis.title = "Balance ($)"
    chart.x_axis.title = "Trade #"
    chart.height = 12
    chart.width = 24

    data = Reference(
        wb["Trades"],
        min_col=_col_to_int(COL[f"Bal_{STRAT_KEYS[0]}"]),
        max_col=_col_to_int(COL[f"Bal_{STRAT_KEYS[-1]}"]),
        min_row=1,
        max_row=MAX_ROWS + 1,
    )
    chart.add_data(data, titles_from_data=True)
    cats = Reference(
        wb["Trades"], min_col=1, max_col=1,
        min_row=2, max_row=MAX_ROWS + 1,
    )
    chart.set_categories(cats)
    ws.add_chart(chart, "H4")


# ---------------------------------------------------------------------------
# Main
# ---------------------------------------------------------------------------


def build_workbook() -> Workbook:
    wb = Workbook()
    default = wb.active
    wb.remove(default)
    build_config(wb)
    build_trades(wb)
    build_dashboard(wb)
    wb.active = wb.sheetnames.index("Dashboard")
    return wb


def main() -> int:
    OUTPUT.parent.mkdir(parents=True, exist_ok=True)
    wb = build_workbook()
    wb.save(OUTPUT)
    print(f"Wrote {OUTPUT}")
    return 0


if __name__ == "__main__":
    raise SystemExit(main())