"""
Configuration — loaded once at import time.
Values come from config.json (strategy params) and .env (secrets).
"""

import json
import os
from pathlib import Path

from dotenv import load_dotenv

load_dotenv()

_root = Path(__file__).parent.parent
with open(_root / "config.json") as f:
    _cfg = json.load(f)

# ── strategy ──────────────────────────────────────────────────────────────────
SYMBOLS:       list[str] = _cfg["symbols"]
TIMEFRAME:     str       = _cfg["timeframe"]          # "M15"
LOOKBACK:      int       = _cfg["lookback_candles"]   # bars for indicator warmup
RSI_PERIOD:    int       = _cfg["rsi_period"]
ATR_PERIOD:    int       = _cfg["atr_period"]
OS_LEVEL:      float     = _cfg["os_level"]
OB_LEVEL:      float     = _cfg["ob_level"]
SL_ATR:        float     = _cfg["sl_atr"]
TP_ATR:        float     = _cfg["tp_atr"]
TREND_FAST:    int       = _cfg["trend_fast"]
TREND_SLOW:    int       = _cfg["trend_slow"]
SESSION_START: int       = _cfg["session_start"]
SESSION_END:   int       = _cfg["session_end"]

# ── risk ──────────────────────────────────────────────────────────────────────
RISK_PER_TRADE: float = _cfg["risk_per_trade"]    # fraction, e.g. 0.01
MAX_POSITIONS:  int   = _cfg["max_positions"]
MIN_SL_PIPS:    float = _cfg["min_sl_pips"]
MAX_DAILY_LOSS: float = _cfg["max_daily_loss"]    # fraction of balance

# ── mode ──────────────────────────────────────────────────────────────────────
PAPER_TRADING:       bool  = _cfg.get("paper_trading", True)
PAPER_INITIAL_BALANCE: float = _cfg.get("paper_initial_balance", 10_000.0)
REFRESH_INTERVAL:    int   = _cfg.get("refresh_interval_seconds", 15)

# ── broker secrets (from .env) ────────────────────────────────────────────────
MT5_LOGIN:    int = int(os.environ.get("MT5_LOGIN") or "0")
MT5_PASSWORD: str = os.environ.get("MT5_PASSWORD", "")
MT5_SERVER:   str = os.environ.get("MT5_SERVER", "")

# ── telegram secrets ──────────────────────────────────────────────────────────
TELEGRAM_BOT_TOKEN: str = os.environ.get("TELEGRAM_BOT_TOKEN", "")
TELEGRAM_CHAT_ID:   str = os.environ.get("TELEGRAM_CHAT_ID", "")