// src/hooks/useIndexQuote.js
// 指数实时行情 Hook - 交易时间内每分钟自动更新

import { useState, useEffect, useCallback, useRef } from 'react';
import { logger } from '../utils/logger';
import { getApiBase } from '../utils/apiConfig';

// 交易日数据会从后端获取，这里只做时间判断
const TRADING_SESSIONS = [
  { start: { hour: 9, minute: 30 }, end: { hour: 11, minute: 30 } },
  { start: { hour: 13, minute: 0 }, end: { hour: 15, minute: 0 } },
];

/**
 * 判断当前时间是否在交易时段内
 */
const isInTradingSession = () => {
  const now = new Date();
  const currentMinutes = now.getHours() * 60 + now.getMinutes();

  return TRADING_SESSIONS.some(session => {
    const startMinutes = session.start.hour * 60 + session.start.minute;
    const endMinutes = session.end.hour * 60 + session.end.minute;
    return currentMinutes >= startMinutes && currentMinutes <= endMinutes;
  });
};

/**
 * 获取指数实时行情
 */
const fetchIndexRealtime = async (indexCode) => {
  try {
    const response = await fetch(`${getApiBase()}/api/index/${indexCode}/realtime`);
    if (!response.ok) {
      throw new Error(`HTTP error! status: ${response.status}`);
    }
    const result = await response.json();
    if (result.success && result.data) {
      return result.data;
    }
    return null;
  } catch (error) {
    logger.error('useIndexQuote', 'fetchIndexRealtime error', { indexCode, error: error.message });
    return null;
  }
};

/**
 * 指数实时行情 Hook
 *
 * @param {string} indexCode - 指数代码，如 '000001' (上证指数) 或 '399001' (深证成指)
 * @param {Object} options - 配置选项
 * @param {number} options.refreshInterval - 刷新间隔（毫秒），默认 60000（1分钟）
 * @param {boolean} options.autoRefresh - 是否自动刷新，默认 true
 *
 * @returns {Object} { quote, loading, error, isTrading, refresh }
 */
export const useIndexQuote = (indexCode, options = {}) => {
  const {
    refreshInterval = 60000, // 默认1分钟
    autoRefresh = true,
  } = options;

  const [quote, setQuote] = useState(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);
  const [isTrading, setIsTrading] = useState(false);

  const intervalRef = useRef(null);
  const isMountedRef = useRef(true);

  // 加载数据
  const loadQuote = useCallback(async () => {
    if (!indexCode) return;

    try {
      const data = await fetchIndexRealtime(indexCode);

      if (!isMountedRef.current) return;

      if (data) {
        setQuote(data);
        setIsTrading(data.is_trading);
        setError(null);
      } else {
        setError('无法获取行情数据');
      }
    } catch (err) {
      if (isMountedRef.current) {
        setError(err.message);
      }
    } finally {
      if (isMountedRef.current) {
        setLoading(false);
      }
    }
  }, [indexCode]);

  // 手动刷新
  const refresh = useCallback(() => {
    setLoading(true);
    loadQuote();
  }, [loadQuote]);

  // 初始加载
  useEffect(() => {
    isMountedRef.current = true;
    loadQuote();

    return () => {
      isMountedRef.current = false;
    };
  }, [loadQuote]);

  // 自动刷新逻辑
  useEffect(() => {
    if (!autoRefresh || !indexCode) return;

    // 清除旧的定时器
    if (intervalRef.current) {
      clearInterval(intervalRef.current);
      intervalRef.current = null;
    }

    // 设置定时器，检查是否在交易时间内
    const checkAndRefresh = () => {
      const inSession = isInTradingSession();
      setIsTrading(inSession);

      if (inSession) {
        loadQuote();
      }
    };

    // 立即检查一次
    checkAndRefresh();

    // 设置定时刷新
    intervalRef.current = setInterval(checkAndRefresh, refreshInterval);

    return () => {
      if (intervalRef.current) {
        clearInterval(intervalRef.current);
        intervalRef.current = null;
      }
    };
  }, [autoRefresh, indexCode, refreshInterval, loadQuote]);

  return {
    quote,
    loading,
    error,
    isTrading,
    refresh,
  };
};

/**
 * 批量获取多个指数的实时行情
 *
 * @param {string[]} indexCodes - 指数代码数组
 * @param {Object} options - 配置选项
 */
export const useMultiIndexQuotes = (indexCodes = [], options = {}) => {
  const {
    refreshInterval = 60000,
    autoRefresh = true,
  } = options;

  const [quotes, setQuotes] = useState({});
  const [loading, setLoading] = useState(true);
  const [isTrading, setIsTrading] = useState(false);

  const intervalRef = useRef(null);
  const isMountedRef = useRef(true);

  // 批量加载数据
  const loadQuotes = useCallback(async () => {
    if (!indexCodes || indexCodes.length === 0) return;

    try {
      const results = await Promise.all(
        indexCodes.map(code => fetchIndexRealtime(code))
      );

      if (!isMountedRef.current) return;

      const newQuotes = {};
      let hasTrading = false;

      results.forEach((data, idx) => {
        if (data) {
          newQuotes[indexCodes[idx]] = data;
          if (data.is_trading) hasTrading = true;
        }
      });

      setQuotes(newQuotes);
      setIsTrading(hasTrading);
    } catch (err) {
      logger.error('useMultiIndexQuotes', 'loadQuotes error', err);
    } finally {
      if (isMountedRef.current) {
        setLoading(false);
      }
    }
  }, [indexCodes]);

  // 手动刷新
  const refresh = useCallback(() => {
    setLoading(true);
    loadQuotes();
  }, [loadQuotes]);

  // 初始加载
  useEffect(() => {
    isMountedRef.current = true;
    loadQuotes();

    return () => {
      isMountedRef.current = false;
    };
  }, [loadQuotes]);

  // 自动刷新逻辑
  useEffect(() => {
    if (!autoRefresh || indexCodes.length === 0) return;

    if (intervalRef.current) {
      clearInterval(intervalRef.current);
      intervalRef.current = null;
    }

    const checkAndRefresh = () => {
      const inSession = isInTradingSession();
      setIsTrading(inSession);

      if (inSession) {
        loadQuotes();
      }
    };

    checkAndRefresh();
    intervalRef.current = setInterval(checkAndRefresh, refreshInterval);

    return () => {
      if (intervalRef.current) {
        clearInterval(intervalRef.current);
        intervalRef.current = null;
      }
    };
  }, [autoRefresh, indexCodes, refreshInterval, loadQuotes]);

  return {
    quotes,
    loading,
    isTrading,
    refresh,
  };
};

export default useIndexQuote;