ForexBot2/telegram_bot.py

#!/usr/bin/env python3
"""
ForexBot2 — Telegram Bot
========================
Async Telegram interface with candle-boundary auto-scanner and
real-time WebSocket level-breach monitor.

Manual scan: 4 pairs × 4 timeframes via inline buttons.
Auto-scan:   Starts automatically on boot if TELEGRAM_CHAT_ID is set.
             /autoscan toggles for additional chats or to stop.
             M5  fires at :00/:05/:10/… + 10s buffer.
             M15 fires at :00/:15/:30/:45 + 10s buffer.
             H1  fires at :00 + 10s buffer.
             H4  fires at :00 every 4 hours + 10s buffer.
WebSocket:   Streams live ticks from TwelveData for all 4 pairs.
             When price crosses a key structure level (swing S/R, BB,
             EMA200) cached from the last boundary scan, triggers an
             immediate M15 scan and sends a Level Break Alert.
             5-minute cooldown per pair prevents spam.

Plan: TwelveData Pro (55 credits/min, 1500 WS credits).
Credit budget (worst case, 4-hour boundary):
    Unique fetches: 4 pairs × ~6 TFs = ~24 calls (rest cached) → fits in 55/min.
    WebSocket: 4 symbols = 4 credits (one-time on connect).
    Level breach scans: ~3 REST calls each, ~10/hour worst case.

Usage:
    python telegram_bot.py
    TELEGRAM_TOKEN=<token> TELEGRAM_CHAT_ID=<id> python telegram_bot.py
"""

import asyncio
import json
import logging
import os
import sys
import time
from concurrent.futures import ThreadPoolExecutor
from datetime import datetime, timezone
from typing import Dict, List, Optional

import websockets

from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
from telegram.constants import ParseMode
from telegram.ext import (
    Application,
    CallbackQueryHandler,
    CommandHandler,
    ContextTypes,
)

from config import (
    PlatformConfig, SignalStrength, Timeframe,
    EURUSD, USDJPY, GBPUSD, XAUUSD, PAIR_INFO,
)
from data_provider import ForexDataProvider
from signal_aggregator import SignalAggregator, SignalReport

# ── Force UTF-8 on Windows ────────────────────────────────────────────
if hasattr(sys.stdout, "reconfigure"):
    sys.stdout.reconfigure(encoding="utf-8")

logging.basicConfig(
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
    level=logging.INFO,
    datefmt="%H:%M:%S",
)
logging.getLogger("httpx").setLevel(logging.WARNING)
logging.getLogger("httpcore").setLevel(logging.WARNING)
logger = logging.getLogger("telegram_bot")

TOKEN = os.environ.get("TELEGRAM_TOKEN", "8228251480:AAFW2OAyQ2idMicql2t_CIXk1r9-qfRTfNE")
CHAT_ID = os.environ.get("TELEGRAM_CHAT_ID", "6025899022")

# ── Pairs & buttons ───────────────────────────────────────────────────

SCAN_PAIRS = [EURUSD, USDJPY, GBPUSD, XAUUSD]

CORRELATION_GROUPS = {
    "usd_negative": {"pairs": {EURUSD, GBPUSD}, "label": "USD-weakness"},
    "risk_sentiment": {"pairs": {XAUUSD, USDJPY}, "label": "Risk-sentiment"},
}

_WS_TO_PAIR = {
    "EUR/USD": EURUSD,
    "GBP/USD": GBPUSD,
    "USD/JPY": USDJPY,
    "XAU/USD": XAUUSD,
}
_WS_SYMBOLS = list(_WS_TO_PAIR.keys())

_LEVEL_KEYS = (
    "swing_high_1", "swing_high_2", "swing_high_3",
    "swing_low_1", "swing_low_2", "swing_low_3",
    "bb_upper", "bb_lower", "ema_trend",
)

SCAN_BUTTONS = [
    {"cb": "scan_eurusd_m5",  "symbol": EURUSD, "tf": Timeframe.M5,  "label": "EUR/USD 5M"},
    {"cb": "scan_eurusd_m15", "symbol": EURUSD, "tf": Timeframe.M15, "label": "EUR/USD 15M"},
    {"cb": "scan_eurusd_h1",  "symbol": EURUSD, "tf": Timeframe.H1,  "label": "EUR/USD 1H"},
    {"cb": "scan_eurusd_h4",  "symbol": EURUSD, "tf": Timeframe.H4,  "label": "EUR/USD 4H"},
    {"cb": "scan_usdjpy_m5",  "symbol": USDJPY, "tf": Timeframe.M5,  "label": "USD/JPY 5M"},
    {"cb": "scan_usdjpy_m15", "symbol": USDJPY, "tf": Timeframe.M15, "label": "USD/JPY 15M"},
    {"cb": "scan_usdjpy_h1",  "symbol": USDJPY, "tf": Timeframe.H1,  "label": "USD/JPY 1H"},
    {"cb": "scan_usdjpy_h4",  "symbol": USDJPY, "tf": Timeframe.H4,  "label": "USD/JPY 4H"},
    {"cb": "scan_gbpusd_m5",  "symbol": GBPUSD, "tf": Timeframe.M5,  "label": "GBP/USD 5M"},
    {"cb": "scan_gbpusd_m15", "symbol": GBPUSD, "tf": Timeframe.M15, "label": "GBP/USD 15M"},
    {"cb": "scan_gbpusd_h1",  "symbol": GBPUSD, "tf": Timeframe.H1,  "label": "GBP/USD 1H"},
    {"cb": "scan_gbpusd_h4",  "symbol": GBPUSD, "tf": Timeframe.H4,  "label": "GBP/USD 4H"},
    {"cb": "scan_xauusd_m5",  "symbol": XAUUSD, "tf": Timeframe.M5,  "label": "XAU/USD 5M"},
    {"cb": "scan_xauusd_m15", "symbol": XAUUSD, "tf": Timeframe.M15, "label": "XAU/USD 15M"},
    {"cb": "scan_xauusd_h1",  "symbol": XAUUSD, "tf": Timeframe.H1,  "label": "XAU/USD 1H"},
    {"cb": "scan_xauusd_h4",  "symbol": XAUUSD, "tf": Timeframe.H4,  "label": "XAU/USD 4H"},
]

SCAN_LOOKUP = {b["cb"]: b for b in SCAN_BUTTONS}

TF_CONFIRMATIONS = {
    Timeframe.M5:  [Timeframe.M15, Timeframe.H1],
    Timeframe.M15: [Timeframe.M5, Timeframe.H1],
    Timeframe.H1:  [Timeframe.M15, Timeframe.H4],
    Timeframe.H4:  [Timeframe.H1, Timeframe.D1],
}

AUTOSCAN_CONFIRMATIONS = {
    Timeframe.M5:  [Timeframe.M15, Timeframe.H1],
    Timeframe.M15: [Timeframe.M5, Timeframe.H1],
    Timeframe.H1:  [Timeframe.M15, Timeframe.H4],
    Timeframe.H4:  [Timeframe.H1, Timeframe.D1],
}

_executor = ThreadPoolExecutor(max_workers=2)


# ── Shared data provider (single cache across all scans) ─────────────

_shared_dp: Optional[ForexDataProvider] = None


def _get_shared_dp() -> ForexDataProvider:
    global _shared_dp
    if _shared_dp is None:
        _shared_dp = ForexDataProvider(PlatformConfig())
    return _shared_dp


# ── Signal formatting ─────────────────────────────────────────────────

_SIGNAL_EMOJI = {
    SignalStrength.STRONG_BUY:  "🟢",
    SignalStrength.BUY:         "🟩",
    SignalStrength.NEUTRAL:     "⬜",
    SignalStrength.SELL:        "🟥",
    SignalStrength.STRONG_SELL: "🔴",
}

_QUALITY_EMOJI = {
    "A+": "🏆", "A": "🥇", "B": "🥈", "C": "🥉", "D": "⚠️", "F": "❌",
}

_ARROW = {
    SignalStrength.STRONG_BUY:  "⬆️",
    SignalStrength.BUY:         "↗️",
    SignalStrength.NEUTRAL:     "➡️",
    SignalStrength.SELL:        "↘️",
    SignalStrength.STRONG_SELL: "⬇️",
}


def _signal_label(sig: SignalStrength) -> str:
    return sig.name.replace("_", " ")


def _mtf_line(report: SignalReport) -> str:
    if not report.mtf_signals:
        return ""
    parts = []
    for tf, sig in report.mtf_signals.items():
        score = report.mtf_scores.get(tf, 0)
        parts.append(f"{tf}: {_signal_label(sig)} {score:+.1f}")
    return " | ".join(parts)


def _indicator_line(name: str, ind) -> str:
    arrow = _ARROW.get(ind.signal, "➡️")
    short = ind.description.split(" | ")[0] if " | " in ind.description else ind.description
    return f"{arrow} *{ind.name}*: {short}"


def format_signal_message(report: SignalReport) -> str:
    sig = report.final_signal
    emoji = _SIGNAL_EMOJI.get(sig, "⬜")
    qe = _QUALITY_EMOJI.get(report.signal_quality, "")
    label = _signal_label(sig)
    mtf_tag = "✅ MTF aligned" if report.mtf_agreement else "❌ MTF diverged"

    lines: list[str] = []

    now = datetime.now(timezone.utc).strftime("%Y-%m-%d %H:%M UTC")
    lines += [
        f"🔍 *{report.display_name} Signal Analysis*  ({report.primary_analysis.timeframe if report.primary_analysis else ''})",
        f"🕐 {now}",
        "",
        f"💰 Price: *{report.current_price:.5f}*" if report.current_price < 10 else f"💰 Price: *{report.current_price:.3f}*",
        f"📊 Regime: {report.market_regime.replace('_', ' ').title()} | Vol: {report.volatility_regime}",
        "",
        "━━━━━━━━━━━━━━━━━━━━",
        f"{emoji} *{label}*  {qe}{report.signal_quality}  |  Score: {report.final_score:+.1f}  |  {report.final_confidence:.0f}% conf",
        f"_{report.action_recommendation}_",
        f"{mtf_tag}",
    ]

    mtf = _mtf_line(report)
    if mtf:
        lines += ["", f"📈 *MTF*: {mtf}"]

    if report.primary_analysis:
        lines += ["", "━━━━━━━━━━━━━━━━━━━━", "📋 *Indicators*"]
        for name, ind in report.primary_analysis.indicators.items():
            if name.startswith("_") or ind.weight == 0:
                continue
            lines.append(_indicator_line(name, ind))

    if report.warnings:
        lines.append("")
        for w in report.warnings:
            lines.append(f"⚠️ {w}")

    if report.trade_setup and sig in (SignalStrength.STRONG_BUY, SignalStrength.STRONG_SELL):
        ts = report.trade_setup
        dir_emoji = "📈" if ts.direction == "BUY" else "📉"
        lines += [
            "",
            "━━━━━━━━━━━━━━━━━━━━",
            f"🚀 *TRADE SETUP*",
            f"{dir_emoji} Direction: *{ts.direction}*",
            f"▶ Entry:  `{ts.entry_price:.3f}`",
            f"🛑 SL:     `{ts.stop_loss:.3f}`  ({ts.risk_pips:.1f} pips)",
            f"🎯 TP1:    `{ts.take_profit_1:.3f}`  ({ts.reward_pips:.1f} pips)",
        ]
        if ts.take_profit_2:
            lines.append(f"🎯 TP2:    `{ts.take_profit_2:.3f}`")
        lines.append(f"⚖️  RR:     1:{ts.risk_reward:.1f}")

    lines += ["", "━━━━━━━━━━━━━━━━━━━━",
              "_Educational / research use only._"]

    return "\n".join(lines)


# ── Correlation filter ───────────────────────────────────────────────

def _detect_correlated_exposure(reports: List[SignalReport]) -> List[str]:
    warnings = []
    for group_info in CORRELATION_GROUPS.values():
        group_pairs = group_info["pairs"]
        group_label = group_info["label"]
        active = [
            r for r in reports
            if r.symbol in group_pairs
            and r.final_signal not in (SignalStrength.NEUTRAL,)
        ]
        if len(active) >= 2:
            directions = set()
            for r in active:
                if r.final_signal in (SignalStrength.BUY, SignalStrength.STRONG_BUY):
                    directions.add("BUY")
                else:
                    directions.add("SELL")
            if len(directions) == 1:
                names = ", ".join(r.display_name for r in active)
                warnings.append(
                    f"⚠️ Same exposure ({group_label}): {names} both {directions.pop()}"
                )
    return warnings


# ── Auto-scan summary format ─────────────────────────────────────────

def _format_scan_summary(reports: List[SignalReport], tf: Timeframe) -> str:
    now = datetime.now(timezone.utc).strftime("%H:%M UTC")
    lines = [
        f"📊 *{tf.value} Auto-Scan* | {now}",
        "━━━━━━━━━━━━━━━━━━━━",
    ]
    for r in reports:
        emoji = _SIGNAL_EMOJI.get(r.final_signal, "⬜")
        sig = _signal_label(r.final_signal)
        mtf = "✅" if r.mtf_agreement else "❌"
        lines.append(
            f"{emoji} *{r.display_name}*  {sig}  "
            f"{_QUALITY_EMOJI.get(r.signal_quality, '')}{r.signal_quality}  "
            f"{r.final_score:+.1f}  {r.final_confidence:.0f}%  {mtf}MTF"
        )
    lines.append("━━━━━━━━━━━━━━━━━━━━")

    actionable = [r for r in reports if r.signal_quality in ("A+", "A", "B")]
    if actionable:
        names = ", ".join(r.display_name for r in actionable)
        lines.append(f"🔔 Actionable: {names}")
    else:
        lines.append("No actionable signals this cycle.")

    corr_warnings = _detect_correlated_exposure(reports)
    for w in corr_warnings:
        lines.append(w)

    return "\n".join(lines)


# ── Keyboard helper ───────────────────────────────────────────────────

def scan_keyboard() -> InlineKeyboardMarkup:
    rows = []
    for i in range(0, len(SCAN_BUTTONS), 4):
        rows.append([
            InlineKeyboardButton(b["label"], callback_data=b["cb"])
            for b in SCAN_BUTTONS[i:i + 4]
        ])
    return InlineKeyboardMarkup(rows)


# ── Signal runner (shared data provider for cache reuse) ──────────────

def _run_signal_sync(
    symbol: str,
    timeframe: Timeframe,
    confirmation_tfs: Optional[List[Timeframe]] = None,
) -> SignalReport:
    if confirmation_tfs is None:
        confirmation_tfs = TF_CONFIRMATIONS.get(
            timeframe, [Timeframe.M15, Timeframe.H4]
        )
    config = PlatformConfig()
    config.primary_timeframe = timeframe
    config.confirmation_timeframes = confirmation_tfs
    aggregator = SignalAggregator(config)
    aggregator.data_provider = _get_shared_dp()
    return aggregator.analyze_pair(symbol=symbol)


async def run_signal(
    symbol: str,
    timeframe: Timeframe,
    confirmation_tfs: Optional[List[Timeframe]] = None,
) -> SignalReport:
    loop = asyncio.get_event_loop()
    return await loop.run_in_executor(
        _executor, _run_signal_sync, symbol, timeframe, confirmation_tfs
    )


# ── Candle-boundary scheduler ────────────────────────────────────────

_autoscan_chats: set[int] = set()
_autoscan_tasks: list[asyncio.Task] = []


def _seconds_until_boundary(interval_minutes: int, buffer: int = 10) -> float:
    """Seconds until the next candle close + buffer."""
    now = datetime.now(timezone.utc)
    elapsed_minutes = now.minute % interval_minutes
    elapsed_seconds = elapsed_minutes * 60 + now.second + now.microsecond / 1e6
    interval_seconds = interval_minutes * 60
    remaining = interval_seconds - elapsed_seconds + buffer
    if remaining <= buffer:
        remaining += interval_seconds
    return remaining


async def _scan_timeframe(
    bot,
    tf: Timeframe,
    confirmation_tfs: List[Timeframe],
) -> None:
    """Scan all pairs for one timeframe and broadcast results."""
    reports: List[SignalReport] = []
    for symbol in SCAN_PAIRS:
        try:
            report = await run_signal(symbol, tf, confirmation_tfs)
            reports.append(report)
        except Exception:
            logger.exception(f"Auto-scan failed for {symbol} {tf.value}")

    if not reports:
        return

    _update_level_cache(reports)

    summary = _format_scan_summary(reports, tf)
    actionable = [r for r in reports if r.signal_quality in ("A+", "A", "B")]

    for chat_id in list(_autoscan_chats):
        try:
            await bot.send_message(chat_id, summary, parse_mode=ParseMode.MARKDOWN)
            for report in actionable:
                detail = format_signal_message(report)
                await bot.send_message(chat_id, detail, parse_mode=ParseMode.MARKDOWN)
        except Exception:
            logger.exception(f"Failed to send to chat {chat_id}")


# ── WebSocket level-breach monitor ──────────────────────────────────

_level_cache: Dict[str, Dict[str, float]] = {}
_last_prices: Dict[str, float] = {}
_scan_cooldowns: Dict[str, float] = {}

_cfg = PlatformConfig()
_WS_API_KEY = os.environ.get("TWELVE_DATA_API_KEY") or _cfg.twelve_data_api_key
_WS_URL = f"wss://ws.twelvedata.com/v1/quotes/price?apikey={_WS_API_KEY}"
_WS_COOLDOWN = _cfg.ws_cooldown_seconds


def _update_level_cache(reports: List[SignalReport]) -> None:
    for r in reports:
        if r.primary_analysis and r.primary_analysis.key_levels:
            levels = {
                k: v for k, v in r.primary_analysis.key_levels.items()
                if k in _LEVEL_KEYS
            }
            if levels:
                _level_cache[r.symbol] = levels


def _check_level_breach(symbol: str, price: float) -> Optional[str]:
    levels = _level_cache.get(symbol)
    if not levels:
        return None

    last = _last_prices.get(symbol)
    if last is None:
        return None

    for name, level in levels.items():
        if (last < level <= price) or (last > level >= price):
            return name

    return None


async def _handle_breach(bot, ws_symbol: str, pair_symbol: str, price: float, level_name: str) -> None:
    now = time.time()
    if now - _scan_cooldowns.get(pair_symbol, 0) < _WS_COOLDOWN:
        return

    _scan_cooldowns[pair_symbol] = now
    display = PAIR_INFO.get(pair_symbol, {}).get("display", ws_symbol)
    label = level_name.replace("_", " ").title()
    logger.info(f"Level breach: {display} crossed {label} at {price}")

    try:
        report = await run_signal(pair_symbol, Timeframe.M15)
        _update_level_cache([report])
        text = (
            f"🔔 *Level Break — {display}*\n"
            f"Price crossed *{label}* at `{price}`\n"
            f"━━━━━━━━━━━━━━━━━━━━\n"
            + format_signal_message(report)
        )
    except Exception as exc:
        logger.exception(f"Breach scan failed for {display}")
        text = f"🔔 *Level Break — {display}*\nPrice crossed {label} at `{price}`\n❌ Scan failed: {exc}"

    for chat_id in list(_autoscan_chats):
        try:
            await bot.send_message(chat_id, text, parse_mode=ParseMode.MARKDOWN)
        except Exception:
            logger.exception(f"Failed to send breach alert to {chat_id}")


async def _ws_monitor(bot) -> None:
    backoff = 1
    while _autoscan_chats:
        try:
            async with websockets.connect(_WS_URL) as ws:
                subscribe = {
                    "action": "subscribe",
                    "params": {"symbols": ",".join(_WS_SYMBOLS)},
                }
                await ws.send(json.dumps(subscribe))
                logger.info(f"WebSocket connected, subscribed to {len(_WS_SYMBOLS)} symbols")
                backoff = 1

                async for raw in ws:
                    if not _autoscan_chats:
                        break

                    msg = json.loads(raw)
                    if msg.get("event") != "price":
                        continue

                    ws_symbol = msg.get("symbol")
                    pair_symbol = _WS_TO_PAIR.get(ws_symbol)
                    if not pair_symbol:
                        continue

                    price = float(msg["price"])
                    breached = _check_level_breach(pair_symbol, price)
                    _last_prices[pair_symbol] = price

                    if breached:
                        asyncio.create_task(
                            _handle_breach(bot, ws_symbol, pair_symbol, price, breached)
                        )

        except asyncio.CancelledError:
            break
        except Exception:
            logger.exception(f"WebSocket error, reconnecting in {backoff}s")
            await asyncio.sleep(backoff)
            backoff = min(backoff * 2, 60)

    logger.info("WebSocket monitor stopped")


async def _candle_loop(bot, tf: Timeframe, interval_minutes: int) -> None:
    label = tf.value
    try:
        while _autoscan_chats:
            wait = _seconds_until_boundary(interval_minutes, buffer=10)
            logger.info(f"{label} auto-scan: next in {wait:.0f}s")
            await asyncio.sleep(wait)
            if not _autoscan_chats:
                break
            logger.info(f"{label} auto-scan: firing")
            await _scan_timeframe(
                bot, tf, AUTOSCAN_CONFIRMATIONS[tf]
            )
    except asyncio.CancelledError:
        pass
    finally:
        logger.info(f"{label} auto-scan loop stopped")


_AUTOSCAN_LOOPS = [
    (Timeframe.M5,  5),
    (Timeframe.M15, 15),
    (Timeframe.H1,  60),
    (Timeframe.H4,  240),
]


_ws_task: Optional[asyncio.Task] = None


def _start_scheduler(bot) -> None:
    global _ws_task
    alive = [t for t in _autoscan_tasks if not t.done()]
    if not alive:
        _autoscan_tasks.clear()
        for tf, interval in _AUTOSCAN_LOOPS:
            _autoscan_tasks.append(
                asyncio.create_task(_candle_loop(bot, tf, interval))
            )
        logger.info("Candle-boundary scheduler started (M5/M15/H1/H4)")

    if _ws_task is None or _ws_task.done():
        _ws_task = asyncio.create_task(_ws_monitor(bot))
        logger.info("WebSocket level-breach monitor started")


def _stop_scheduler() -> None:
    global _ws_task
    for t in _autoscan_tasks:
        t.cancel()
    _autoscan_tasks.clear()
    if _ws_task and not _ws_task.done():
        _ws_task.cancel()
    _ws_task = None
    logger.info("Candle-boundary scheduler and WebSocket monitor stopped")


# ── Handlers ──────────────────────────────────────────────────────────

async def cmd_start(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    scanning = "running" if _autoscan_chats else "off"
    text = (
        "👋 *ForexBot2 — Signal Intelligence*\n\n"
        "Pick a pair and timeframe to scan.\n"
        "Strong signals include a full trade setup with entry, SL and TP.\n\n"
        f"Auto-scan: *{scanning}* — /autoscan to toggle"
    )
    await update.message.reply_text(
        text,
        parse_mode=ParseMode.MARKDOWN,
        reply_markup=scan_keyboard(),
    )


async def cmd_autoscan(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    chat_id = update.effective_chat.id

    if chat_id in _autoscan_chats:
        _autoscan_chats.discard(chat_id)
        if not _autoscan_chats:
            _stop_scheduler()
        await update.message.reply_text(
            "⏹ Auto-scan stopped.",
            parse_mode=ParseMode.MARKDOWN,
        )
        return

    _autoscan_chats.add(chat_id)
    _start_scheduler(context.bot)

    next_m5 = _seconds_until_boundary(5, buffer=10)
    next_m15 = _seconds_until_boundary(15, buffer=10)
    next_h1 = _seconds_until_boundary(60, buffer=10)
    next_h4 = _seconds_until_boundary(240, buffer=10)
    await update.message.reply_text(
        "✅ *Auto-scan enabled*\n\n"
        f"Scanning {len(SCAN_PAIRS)} pairs on M5/M15/H1/H4 at candle close.\n"
        f"📡 Live price monitoring active — level-break alerts enabled.\n"
        f"Next: M5 {next_m5 / 60:.0f}m | M15 {next_m15 / 60:.0f}m | "
        f"H1 {next_h1 / 60:.0f}m | H4 {next_h4 / 60:.0f}m\n\n"
        "Use /autoscan again to stop.",
        parse_mode=ParseMode.MARKDOWN,
    )


async def cb_scan(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    query = update.callback_query
    await query.answer()

    btn = SCAN_LOOKUP.get(query.data)
    if not btn:
        return

    pair_display = btn["label"]
    await query.edit_message_text(
        f"⏳ Scanning {pair_display}…",
        parse_mode=ParseMode.MARKDOWN,
    )

    try:
        report = await run_signal(btn["symbol"], btn["tf"])
        text = format_signal_message(report)
    except Exception as exc:
        logger.exception("Signal scan failed")
        text = f"❌ Scan failed: {exc}"

    await query.edit_message_text(
        text,
        parse_mode=ParseMode.MARKDOWN,
        reply_markup=scan_keyboard(),
    )


# ── Boot-time auto-start ──────────────────────────────────────────────

async def _post_init(app: Application) -> None:
    """Start the candle-boundary scheduler on boot if CHAT_ID is set."""
    if not CHAT_ID:
        logger.info("TELEGRAM_CHAT_ID not set — auto-scan disabled on boot. "
                     "Use /autoscan in chat to enable.")
        return

    chat_id = int(CHAT_ID)
    _autoscan_chats.add(chat_id)
    _start_scheduler(app.bot)

    next_m5 = _seconds_until_boundary(5, buffer=10)
    next_m15 = _seconds_until_boundary(15, buffer=10)
    next_h1 = _seconds_until_boundary(60, buffer=10)
    next_h4 = _seconds_until_boundary(240, buffer=10)
    logger.info(
        f"Auto-scan started for chat {chat_id} — "
        f"M5 {next_m5:.0f}s, M15 {next_m15:.0f}s, H1 {next_h1:.0f}s, H4 {next_h4:.0f}s"
    )

    try:
        await app.bot.send_message(
            chat_id,
            f"🤖 *ForexBot2 started*\n\n"
            f"Auto-scanning {len(SCAN_PAIRS)} pairs on M5/M15/H1/H4.\n"
            f"📡 Live price monitoring active — level-break alerts enabled.\n"
            f"Next: M5 {next_m5 / 60:.0f}m | M15 {next_m15 / 60:.0f}m | "
            f"H1 {next_h1 / 60:.0f}m | H4 {next_h4 / 60:.0f}m\n\n"
            f"/autoscan to stop | Manual buttons via /start",
            parse_mode=ParseMode.MARKDOWN,
        )
    except Exception:
        logger.exception("Failed to send boot message")


# ── Entry point ───────────────────────────────────────────────────────

def main() -> None:
    if not TOKEN:
        sys.exit("TELEGRAM_TOKEN not set")

    logger.info("Starting ForexBot2 Telegram bot…")

    app = (
        Application.builder()
        .token(TOKEN)
        .post_init(_post_init)
        .build()
    )

    app.add_handler(CommandHandler("start", cmd_start))
    app.add_handler(CommandHandler("autoscan", cmd_autoscan))
    app.add_handler(CallbackQueryHandler(cb_scan, pattern="^scan_"))

    logger.info("Bot running — press Ctrl+C to stop")
    app.run_polling(allowed_updates=Update.ALL_TYPES)


if __name__ == "__main__":
    main()