"use client";

import { useState, useCallback } from "react";
import {
  parseKisRealtimeIndexTick,
  type KisRealtimeIndexTick,
} from "@/features/dashboard/utils/kis-index-realtime.utils";
import { useKisWebSocket } from "@/features/kis-realtime/hooks/useKisWebSocket";
import type { KisRuntimeCredentials } from "@/features/settings/store/use-kis-runtime-store";

const INDEX_TR_ID = "H0UPCNT0";
const KOSPI_SYMBOL = "0001";
const KOSDAQ_SYMBOL = "1001";

interface UseMarketRealtimeResult {
  realtimeIndices: Record<string, KisRealtimeIndexTick>;
  isConnected: boolean;
  hasReceivedTick: boolean;
  isPending: boolean;
  lastTickAt: string | null;
}

/**
 * @description 코스피/코스닥 실시간 지수 웹소켓 구독 상태를 관리합니다.
 * @param credentials KIS 인증 정보(하위 호환 파라미터)
 * @param isVerified KIS 연결 인증 여부
 * @returns 실시간 지수 맵/연결 상태/수신 대기 상태
 * @remarks UI 흐름: DashboardContainer -> useMarketRealtime -> MarketSummary/StatusHeader 렌더링 반영
 * @see features/dashboard/components/DashboardContainer.tsx 지수 데이터 통합 및 상태 전달
 */
export function useMarketRealtime(
  _credentials: KisRuntimeCredentials | null, // 하위 호환성을 위해 남겨둠 (실제로는 스토어 사용)
  isVerified: boolean, // 하위 호환성을 위해 남겨둠
): UseMarketRealtimeResult {
  const [realtimeIndices, setRealtimeIndices] = useState<
    Record<string, KisRealtimeIndexTick>
  >({});
  const [lastTickAt, setLastTickAt] = useState<string | null>(null);

  const handleMessage = useCallback((data: string) => {
    const tick = parseKisRealtimeIndexTick(data);
    if (tick) {
      setLastTickAt(new Date().toISOString());
      setRealtimeIndices((prev) => ({
        ...prev,
        [tick.symbol]: tick,
      }));
    }
  }, []);

  // KOSPI 구독
  const { isConnected: isKospiConnected } = useKisWebSocket({
    symbol: KOSPI_SYMBOL,
    trId: INDEX_TR_ID,
    onMessage: handleMessage,
    enabled: isVerified,
  });

  // KOSDAQ 구독
  const { isConnected: isKosdaqConnected } = useKisWebSocket({
    symbol: KOSDAQ_SYMBOL,
    trId: INDEX_TR_ID,
    onMessage: handleMessage,
    enabled: isVerified,
  });

  const hasReceivedTick = Object.keys(realtimeIndices).length > 0;
  const isPending = isVerified && (isKospiConnected || isKosdaqConnected) && !hasReceivedTick;

  return {
    realtimeIndices,
    isConnected: isKospiConnected || isKosdaqConnected,
    hasReceivedTick,
    isPending,
    lastTickAt,
  };
}