"""
Day Trading Strategy (Refactored)

기존 day_trading_strategy.py를 BaseStrategy 구조로 변환

전략:
  - ORB (Opening Range Breakout)
  - VWAP Bounce
  - RSI+BB 과매도 반등
"""
import logging
from typing import Optional, Dict, Any
from datetime import datetime, time
import pytz

from app.strategy.base_strategy import BaseStrategy
from app.strategy.signal import Signal, SignalType
from app.core.config import settings

logger = logging.getLogger(__name__)


class DayTradingStrategy(BaseStrategy):
    """
    데이트레이딩 전략 (단기 스칼핑)
    
    09:00~15:20 간 급등/급락 모멘텀 포착
    """
    
    DEFAULT_CONFIG = {
        "max_positions": 3,
        "max_capital_ratio": 0.1,  # 종목당 10%
        "orb_breakout_margin": 0.002,  # 0.2% 돌파
        "stop_loss_pct": 0.025,  # -2.5%
        "entry_cutoff": "14:30",  # 신규 진입 마감
        "eod_flat": "15:20",  # EOD 청산
    }
    
    def __init__(self, name: str = "DayTrading", config: Optional[Dict[str, Any]] = None):
        merged_config = {**self.DEFAULT_CONFIG, **(config or {})}
        super().__init__(name, merged_config)
        
        self.kst = pytz.timezone("Asia/Seoul")
        self.entry_cutoff = self._parse_time(self.config["entry_cutoff"])
        self.eod_flat = self._parse_time(self.config["eod_flat"])
    
    def _parse_time(self, time_str: str) -> time:
        """문자열 "HH:MM" → time 객체"""
        h, m = map(int, time_str.split(":"))
        return time(h, m)
    
    async def analyze(
        self,
        stock_code: str,
        market_data: Dict[str, Any],
        portfolio_data: Optional[Dict[str, Any]] = None
    ) -> Optional[Signal]:
        """
        시장 데이터 분석
        
        Args:
            market_data: {
                "current_price": float,
                "minute_chart": List[dict],  # 1분봉
                "orderbook": dict,
                "stock_name": str,
            }
            portfolio_data: {
                "holding_quantity": int,
                "avg_price": float,
            }
        """
        current_time = datetime.now(self.kst).time()
        
        # 1. 시간 체크
        if current_time >= self.eod_flat:
            # EOD 청산 신호
            if portfolio_data and portfolio_data.get("holding_quantity", 0) > 0:
                return Signal(
                    stock_code=stock_code,
                    signal_type=SignalType.SELL,
                    strategy_name=self.name,
                    timestamp=datetime.now(self.kst),
                    quantity=portfolio_data["holding_quantity"],
                    price=None,  # 시장가
                    confidence=1.0,
                    reason="EOD 강제 청산"
                )
            return None
        
        if current_time >= self.entry_cutoff:
            # 신규 진입 차단
            return None
        
        # 2. 현재 보유 중이면 청산 조건 체크
        if portfolio_data and portfolio_data.get("holding_quantity", 0) > 0:
            exit_signal = self._check_exit(
                stock_code,
                market_data,
                portfolio_data
            )
            if exit_signal:
                return exit_signal
            return None  # 보유 유지
        
        # 3. 신규 진입 검토
        return self._check_entry(stock_code, market_data)
    
    def _check_entry(self, stock_code: str, market_data: Dict[str, Any]) -> Optional[Signal]:
        """신규 진입 신호 체크"""
        current_price = market_data.get("current_price")
        minute_chart = market_data.get("minute_chart", [])
        
        if not current_price or not minute_chart:
            return None
        
        # 예시: ORB 전략 (간단화)
        # 실제는 기존 check_orb_signal() 등을 호출
        
        # 임시 구현: 단순 예시
        if len(minute_chart) >= 30:  # 09:00~09:30 데이터 있음
            orb_high = max(c.get("high", 0) for c in minute_chart[:30])
            
            if current_price > orb_high * (1 + self.config["orb_breakout_margin"]):
                stop_loss = current_price * (1 - self.config["stop_loss_pct"])
                target = current_price * 1.03  # +3% 목표
                
                return Signal(
                    stock_code=stock_code,
                    signal_type=SignalType.BUY,
                    strategy_name=self.name,
                    timestamp=datetime.now(self.kst),
                    quantity=None,  # OrderManager가 계산
                    price=current_price,
                    confidence=0.75,
                    stop_loss_price=stop_loss,
                    take_profit_price=target,
                    reason=f"ORB 돌파: {orb_high:.0f} → {current_price:.0f}",
                    metadata={"strategy_type": "ORB"}
                )
        
        return None
    
    def _check_exit(self, stock_code: str, market_data: Dict[str, Any], portfolio_data: Dict[str, Any]) -> Optional[Signal]:
        """청산 신호 체크"""
        current_price = market_data.get("current_price")
        avg_price = portfolio_data.get("avg_price")
        quantity = portfolio_data.get("holding_quantity")
        
        if not current_price or not avg_price or not quantity:
            return None
        
        # 손절 체크
        stop_loss = avg_price * (1 - self.config["stop_loss_pct"])
        if current_price <= stop_loss:
            return Signal(
                stock_code=stock_code,
                signal_type=SignalType.STOP_LOSS,
                strategy_name=self.name,
                timestamp=datetime.now(self.kst),
                quantity=quantity,
                price=None,  # 시장가
                confidence=1.0,
                reason=f"손절: {current_price:.0f} ≤ {stop_loss:.0f}"
            )
        
        # 익절 체크
        target = avg_price * 1.03
        if current_price >= target:
            return Signal(
                stock_code=stock_code,
                signal_type=SignalType.TAKE_PROFIT,
                strategy_name=self.name,
                timestamp=datetime.now(self.kst),
                quantity=quantity,
                price=None,
                confidence=1.0,
                reason=f"목표가 도달: {current_price:.0f} ≥ {target:.0f}"
            )
        
        return None