import { useEffect, useMemo } from "react";
import { type KisRuntimeCredentials } from "@/features/settings/store/use-kis-runtime-store";
import type {
  DashboardRealtimeTradeTick,
  DashboardStockOrderBookResponse,
} from "@/features/trade/types/trade.types";
import { resolveTradeTrIds } from "@/features/trade/utils/kisRealtimeUtils";
import { useKisWebSocketStore } from "@/features/kis-realtime/stores/kisWebSocketStore";
import { useDomesticSession } from "@/features/trade/hooks/useDomesticSession";
import { useTradeTickSubscription } from "@/features/trade/hooks/useTradeTickSubscription";
import { useOrderbookSubscription } from "@/features/trade/hooks/useOrderbookSubscription";

/**
 * @description KIS 실시간 매매/호가 데이터를 통합 구독하는 커스텀 훅입니다.
 * @summary
 * - `useDomesticSession`: 장 운영 시간(정규장, 시간외 등) 세션 관리
 * - `useTradeTickSubscription`: 실시간 체결가(Tick) 데이터 구독 및 상태 관리
 * - `useOrderbookSubscription`: 실시간 호가(Orderbook) 데이터 구독
 * - `useKisWebSocketStore`: 전역 웹소켓 연결 상태 및 에러 관리
 *
 * 위 훅들을 조합(Composition)하여 트레이딩 화면에 필요한 모든 실시간 데이터를 제공합니다.
 */
export function useKisTradeWebSocket(
  symbol: string | undefined,
  credentials: KisRuntimeCredentials | null,
  isVerified: boolean,
  onTick?: (tick: DashboardRealtimeTradeTick) => void,
  options?: {
    orderBookSymbol?: string;
    orderBookMarket?: "KOSPI" | "KOSDAQ";
    onOrderBookMessage?: (data: DashboardStockOrderBookResponse) => void;
  },
) {
  const marketSession = useDomesticSession();
  const { isConnected, error } = useKisWebSocketStore();

  const { latestTick, recentTradeTicks, lastTickAt } = useTradeTickSubscription(
    {
      symbol,
      isVerified,
      credentials,
      marketSession,
      onTick,
    },
  );

  useOrderbookSubscription({
    symbol: options?.orderBookSymbol,
    market: options?.orderBookMarket,
    isVerified,
    credentials,
    marketSession,
    onOrderBookMessage: options?.onOrderBookMessage,
  });

  // Connection/Data warning
  useEffect(() => {
    if (!isConnected || lastTickAt || !symbol) return;
    const timer = window.setTimeout(() => {
      // Just a warning, not blocking
    }, 8000);
    return () => window.clearTimeout(timer);
  }, [isConnected, lastTickAt, symbol]);

  const realtimeTrId = useMemo(() => {
    if (!credentials) return "H0STCNT0";
    const ids = resolveTradeTrIds(credentials.tradingEnv, marketSession);
    return ids[0] ?? "H0STCNT0";
  }, [credentials, marketSession]);

  return {
    latestTick,
    recentTradeTicks,
    isConnected,
    error,
    lastTickAt,
    realtimeTrId,
  };
}