/**
 * 실시간 전략 STOMP 구독 — 화면과 무관하게 동작, 시그널은 알림 Context로 전달
 */
import React, { forwardRef, useEffect, useImperativeHandle, useRef } from 'react';
import { useLiveStrategyMarkers, type LiveMarker } from '../hooks/useLiveStrategyMarkers';
import { useTradeNotification } from '../contexts/TradeNotificationContext';

export interface LiveSignalNotifierHandle {
  clearMarkers: () => void;
}

interface Props {
  markets: string[];
  /** 종목별 평가 분봉 — STOMP 구독 경로 */
  marketSubscriptions?: { market: string; candleType: string }[];
  activeMarket: string;
  enabled: boolean;
  popupEnabled: boolean;
  strategyId: number | undefined;
  executionType: string;
  strategyName: string | null;
  onMarkersChange: (markers: LiveMarker[]) => void;
  /** 차트 화면일 때만 마커를 차트에 반영 */
  chartMarkersActive: boolean;
}

export const LiveSignalNotifier = forwardRef<LiveSignalNotifierHandle, Props>(function LiveSignalNotifier({
  markets,
  marketSubscriptions,
  activeMarket,
  enabled,
  popupEnabled: _popupEnabled,
  strategyName,
  executionType,
  onMarkersChange,
  chartMarkersActive,
}, ref) {
  const { addNotification, refreshHistory } = useTradeNotification();
  const onMarkersRef = useRef(onMarkersChange);
  onMarkersRef.current = onMarkersChange;

  useEffect(() => {
    if (!enabled || markets.length === 0) return;
    const id = window.setInterval(() => { void refreshHistory(); }, 20_000);
    return () => window.clearInterval(id);
  }, [enabled, markets.length, refreshHistory]);

  const { clearMarkers } = useLiveStrategyMarkers({
    markets,
    subscriptions: marketSubscriptions,
    activeMarket,
    enabled: enabled && markets.length > 0,
    onMarkersChange: markers => {
      if (chartMarkersActive) onMarkersRef.current(markers);
    },
    onSignal: (marker: LiveMarker) => {
      addNotification({
        market: marker.market,
        signalType: marker.signal,
        price: marker.price,
        candleTime: marker.time,
        strategyName,
        executionType,
        candleType: marketSubscriptions?.find(s => s.market === marker.market)?.candleType ?? '1m',
      });
      // STOMP만 수신·DB 저장 누락 시 배지 동기화
      window.setTimeout(() => { void refreshHistory(); }, 800);
    },
  });

  useImperativeHandle(ref, () => ({ clearMarkers }), [clearMarkers]);

  return null;
});

export default LiveSignalNotifier;
