/**
 * 公司详情页面
 *
 * 特性：
 * - 黑金主题设计
 * - 懒加载 Tab 内容
 * - memo 性能优化
 * - axios 数据请求
 */

import React, { memo, useCallback, useRef, useEffect, Suspense } from 'react';
import { useSearchParams } from 'react-router-dom';
import { Box, Spinner, Center } from '@chakra-ui/react';
import SubTabContainer from '@components/SubTabContainer';
import { useCompanyEvents } from './hooks/useCompanyEvents';
import { useCompanyData } from './hooks/useCompanyData';
import CompanyHeader from './components/CompanyHeader';
import { THEME, TAB_CONFIG } from './config';

// ============================================
// 加载状态组件
// ============================================

const TabLoadingFallback = memo(() => (
  <Center py={20}>
    <Spinner size="xl" color={THEME.gold} thickness="3px" />
  </Center>
));

TabLoadingFallback.displayName = 'TabLoadingFallback';

// ============================================
// 主内容区组件
// ============================================

interface CompanyContentProps {
  stockCode: string;
  onTabChange: (index: number, tabKey: string) => void;
}

const CompanyContent = memo<CompanyContentProps>(({ stockCode, onTabChange }) => (
  <Box maxW="container.xl" mx="auto" px={4} py={6}>
    <Box
      bg={THEME.cardBg}
      borderRadius="xl"
      border="1px solid"
      borderColor={THEME.border}
      overflow="hidden"
    >
      <Suspense fallback={<TabLoadingFallback />}>
        <SubTabContainer
          tabs={TAB_CONFIG}
          componentProps={{ stockCode }}
          onTabChange={onTabChange}
          themePreset="blackGold"
          contentPadding={6}
          isLazy={true}
        />
      </Suspense>
    </Box>
  </Box>
));

CompanyContent.displayName = 'CompanyContent';

// ============================================
// 主页面组件
// ============================================

const CompanyIndex: React.FC = () => {
  // URL 参数管理
  const [searchParams, setSearchParams] = useSearchParams();
  const stockCode = searchParams.get('scode') || '000001';
  const prevStockCodeRef = useRef(stockCode);

  // 数据加载 Hook
  const {
    stockInfo,
    stockInfoLoading,
    isInWatchlist,
    watchlistLoading,
    toggleWatchlist,
  } = useCompanyData({ stockCode });

  // 事件追踪 Hook
  const companyEvents = useCompanyEvents({ stockCode }) as {
    trackStockSearched: (newCode: string, oldCode: string | null) => void;
    trackTabChanged: (index: number, name: string, prevIndex: number) => void;
    trackWatchlistAdded: (code: string) => void;
    trackWatchlistRemoved: (code: string) => void;
  };

  const { trackStockSearched, trackTabChanged, trackWatchlistAdded, trackWatchlistRemoved } = companyEvents;

  // 股票代码变化追踪
  useEffect(() => {
    if (stockCode !== prevStockCodeRef.current) {
      trackStockSearched(stockCode, prevStockCodeRef.current);
      prevStockCodeRef.current = stockCode;
    }
  }, [stockCode, trackStockSearched]);

  // 处理股票切换
  const handleStockChange = useCallback((newCode: string) => {
    if (newCode && newCode !== stockCode) {
      trackStockSearched(newCode, stockCode);
      setSearchParams({ scode: newCode });
    }
  }, [stockCode, setSearchParams, trackStockSearched]);

  // 处理自选股切换（带追踪）
  const handleWatchlistToggle = useCallback(async () => {
    const wasInWatchlist = isInWatchlist;
    await toggleWatchlist();

    // 追踪事件（根据操作前的状态判断）
    if (wasInWatchlist) {
      trackWatchlistRemoved(stockCode);
    } else {
      trackWatchlistAdded(stockCode);
    }
  }, [stockCode, isInWatchlist, toggleWatchlist, trackWatchlistAdded, trackWatchlistRemoved]);

  // 处理 Tab 切换
  const handleTabChange = useCallback((index: number, tabKey: string) => {
    const tabName = TAB_CONFIG[index]?.name || tabKey;
    trackTabChanged(index, tabName, index);
  }, [trackTabChanged]);

  return (
    <Box bg={THEME.bg} minH="calc(100vh - 60px)">
      {/* 顶部搜索栏 */}
      <CompanyHeader
        stockCode={stockCode}
        stockInfo={stockInfo}
        stockInfoLoading={stockInfoLoading}
        isInWatchlist={isInWatchlist}
        watchlistLoading={watchlistLoading}
        onStockChange={handleStockChange}
        onWatchlistToggle={handleWatchlistToggle}
      />

      {/* 主内容区 */}
      <CompanyContent
        stockCode={stockCode}
        onTabChange={handleTabChange}
      />
    </Box>
  );
};

export default memo(CompanyIndex);