// src/views/Community/components/DynamicNewsDetail/DynamicNewsDetailPanel.js
// 动态新闻详情面板主组件（组装所有子组件）

import React, { useState, useMemo, useCallback } from 'react';
import {
  Card,
  CardBody,
  VStack,
  Text,
  useColorModeValue,
  useToast,
} from '@chakra-ui/react';
import { getImportanceConfig } from '../../../../constants/importanceLevels';
import { eventService } from '../../../../services/eventService';
import EventHeaderInfo from './EventHeaderInfo';
import EventDescriptionSection from './EventDescriptionSection';
import RelatedConceptsSection from './RelatedConceptsSection';
import RelatedStocksSection from './RelatedStocksSection';
import CollapsibleSection from './CollapsibleSection';
import HistoricalEvents from '../../../EventDetail/components/HistoricalEvents';
import TransmissionChainAnalysis from '../../../EventDetail/components/TransmissionChainAnalysis';

/**
 * 动态新闻详情面板主组件
 * @param {Object} props
 * @param {Object} props.event - 事件对象（包含详情数据）
 */
const DynamicNewsDetailPanel = ({ event }) => {
  const cardBg = useColorModeValue('white', 'gray.800');
  const borderColor = useColorModeValue('gray.200', 'gray.700');
  const textColor = useColorModeValue('gray.600', 'gray.400');
  const toast = useToast();

  // 折叠状态管理
  const [isStocksOpen, setIsStocksOpen] = useState(true);
  const [isHistoricalOpen, setIsHistoricalOpen] = useState(false);
  const [isTransmissionOpen, setIsTransmissionOpen] = useState(false);

  // 关注状态管理
  const [isFollowing, setIsFollowing] = useState(false);
  const [followerCount, setFollowerCount] = useState(0);

  // 自选股管理（使用 localStorage）
  const [watchlistSet, setWatchlistSet] = useState(() => {
    try {
      const saved = localStorage.getItem('stock_watchlist');
      return saved ? new Set(JSON.parse(saved)) : new Set();
    } catch {
      return new Set();
    }
  });

  // 生成模拟行情数据
  const quotes = useMemo(() => {
    if (!event?.related_stocks) return {};

    const quotesData = {};
    event.related_stocks.forEach(stock => {
      // 优先使用 stock.daily_change，否则生成随机涨跌幅
      const change = stock.daily_change
        ? parseFloat(stock.daily_change)
        : (Math.random() * 10 - 3); // -3% ~ +7%

      quotesData[stock.stock_code] = {
        change: change,
        price: 10 + Math.random() * 90 // 模拟价格 10-100
      };
    });

    return quotesData;
  }, [event?.related_stocks]);

  // 切换关注状态
  const handleToggleFollow = async () => {
    try {
      if (isFollowing) {
        // 取消关注
        await eventService.unfollowEvent(event.id);
        setIsFollowing(false);
        setFollowerCount(prev => Math.max(0, prev - 1));
      } else {
        // 添加关注
        await eventService.followEvent(event.id);
        setIsFollowing(true);
        setFollowerCount(prev => prev + 1);
      }
    } catch (error) {
      console.error('切换关注状态失败:', error);
    }
  };

  // 切换自选股
  const handleWatchlistToggle = useCallback(async (stockCode, isInWatchlist) => {
    try {
      const newWatchlist = new Set(watchlistSet);

      if (isInWatchlist) {
        newWatchlist.delete(stockCode);
        toast({
          title: '已移除自选股',
          status: 'info',
          duration: 2000,
          isClosable: true,
        });
      } else {
        newWatchlist.add(stockCode);
        toast({
          title: '已添加至自选股',
          status: 'success',
          duration: 2000,
          isClosable: true,
        });
      }

      setWatchlistSet(newWatchlist);
      localStorage.setItem('stock_watchlist', JSON.stringify(Array.from(newWatchlist)));
    } catch (error) {
      console.error('切换自选股失败:', error);
      toast({
        title: '操作失败',
        description: error.message,
        status: 'error',
        duration: 3000,
        isClosable: true,
      });
    }
  }, [watchlistSet, toast]);

  // 空状态
  if (!event) {
    return (
      <Card bg={cardBg} borderColor={borderColor} borderWidth="1px">
        <CardBody>
          <Text color={textColor} textAlign="center">
            请选择一个事件查看详情
          </Text>
        </CardBody>
      </Card>
    );
  }

  const importance = getImportanceConfig(event.importance);

  return (
    <Card bg={cardBg} borderColor={borderColor} borderWidth="1px">
      <CardBody>
        <VStack align="stretch" spacing={3}>
          {/* 头部信息区 */}
          <EventHeaderInfo
            event={event}
            importance={importance}
            isFollowing={isFollowing}
            followerCount={followerCount}
            onToggleFollow={handleToggleFollow}
          />

          {/* 事件描述 */}
          <EventDescriptionSection description={event.description} />

          {/* 相关概念 */}
          <RelatedConceptsSection
            keywords={event.keywords}
            effectiveTradingDate={event.trading_date}
            eventTime={event.created_at}
          />

          {/* 相关股票（可折叠） */}
          <RelatedStocksSection
            stocks={event.related_stocks}
            quotes={quotes}
            eventTime={event.created_at}
            watchlistSet={watchlistSet}
            isOpen={isStocksOpen}
            onToggle={() => setIsStocksOpen(!isStocksOpen)}
            onWatchlistToggle={handleWatchlistToggle}
          />

          {/* 历史事件对比（可折叠） */}
          <CollapsibleSection
            title="历史事件对比"
            isOpen={isHistoricalOpen}
            onToggle={() => setIsHistoricalOpen(!isHistoricalOpen)}
            count={event.historical_events?.length || 0}
          >
            <HistoricalEvents
              events={event.historical_events || []}
            />
          </CollapsibleSection>

          {/* 传导链分析（可折叠） */}
          <CollapsibleSection
            title="传导链分析"
            isOpen={isTransmissionOpen}
            onToggle={() => setIsTransmissionOpen(!isTransmissionOpen)}
          >
            <TransmissionChainAnalysis
              eventId={event.id}
              eventService={eventService}
            />
          </CollapsibleSection>
        </VStack>
      </CardBody>
    </Card>
  );
};

export default DynamicNewsDetailPanel;