"""Telegram 매매 알림."""

from __future__ import annotations

import logging
import os

import requests

logger = logging.getLogger(__name__)

_API = "https://api.telegram.org/bot{token}/sendMessage"


def _send(text: str) -> None:
    token = os.getenv("TELEGRAM_TRADE_TOKEN", "")
    chat_id = os.getenv("TELEGRAM_CHAT_ID", "")
    if not token or not chat_id:
        logger.warning("Telegram 설정 없음, 알림 스킵")
        return
    try:
        requests.post(
            _API.format(token=token),
            json={"chat_id": chat_id, "text": text, "parse_mode": "HTML"},
            timeout=5,
        )
    except Exception as e:
        logger.error(f"Telegram 알림 실패: {e}")


def notify_buy(ticker: str, price: float, amount: float, invested_krw: int) -> None:
    _send(
        f"📈 <b>[매수]</b> {ticker}\n"
        f"가격: {price:,.0f}원\n"
        f"수량: {amount}\n"
        f"투자금: {invested_krw:,}원"
    )


def notify_sell(ticker: str, price: float, pnl_pct: float, reason: str) -> None:
    emoji = "✅" if pnl_pct >= 0 else "🔴"
    _send(
        f"{emoji} <b>[매도]</b> {ticker}\n"
        f"가격: {price:,.0f}원\n"
        f"수익률: {pnl_pct:+.1f}%\n"
        f"사유: {reason}"
    )


def notify_error(message: str) -> None:
    _send(f"⚠️ <b>[오류]</b>\n{message}")


def notify_status(positions: dict) -> None:
    """1시간마다 포지션 현황 요약 전송."""
    from datetime import datetime
    import pyupbit

    now = datetime.now().strftime("%H:%M")

    if not positions:
        _send(f"📊 <b>[{now} 현황]</b>\n보유 포지션 없음 — 매수 신호 대기 중")
        return

    lines = [f"📊 <b>[{now} 현황]</b>"]
    for ticker, pos in positions.items():
        current = pyupbit.get_current_price(ticker)
        if not current:
            continue
        pnl = (current - pos["buy_price"]) / pos["buy_price"] * 100
        peak = pos["peak_price"]
        drop = (peak - current) / peak * 100
        elapsed = (datetime.now() - pos["entry_time"]).total_seconds() / 3600
        emoji = "📈" if pnl >= 0 else "📉"
        lines.append(
            f"\n{emoji} <b>{ticker}</b>\n"
            f"  현재가: {current:,.0f}원\n"
            f"  수익률: {pnl:+.1f}%\n"
            f"  최고가 대비: -{drop:.1f}%\n"
            f"  보유: {elapsed:.1f}h"
        )
    _send("\n".join(lines))