"""Telegram 매매 알림."""

from __future__ import annotations

import logging
import os

import requests

logger = logging.getLogger(__name__)

_TOKEN = os.getenv("TELEGRAM_TRADE_TOKEN", "")
_CHAT_ID = os.getenv("TELEGRAM_CHAT_ID", "")
_API = "https://api.telegram.org/bot{token}/sendMessage"


def _send(text: str) -> None:
    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}")