// src/views/Community/components/DynamicNewsCard/VerticalModeLayout.js
// 纵向分栏模式布局组件

import React, { useState } from 'react';
import {
  Box,
  VStack,
  Flex,
  Center,
  Text,
  useBreakpointValue,
  useDisclosure
} from '@chakra-ui/react';
import { InfoIcon } from '@chakra-ui/icons';
import HorizontalDynamicNewsEventCard from '../EventCard/HorizontalDynamicNewsEventCard';
import EventDetailScrollPanel from './EventDetailScrollPanel';
import EventDetailModal from '../EventDetailModal';

/**
 * 纵向分栏模式布局
 * 固定布局：左侧事件列表 3fr | 右侧详情 7fr
 *
 * @param {string} display - CSS display 属性（用于显示/隐藏组件）
 * @param {Array} events - 当前页的事件列表（分页数据）
 * @param {Object} selectedEvent - 当前选中的事件
 * @param {Function} onEventSelect - 事件选择回调
 * @param {Object} eventFollowStatus - 事件关注状态
 * @param {Function} onToggleFollow - 关注按钮回调
 * @param {Function} getTimelineBoxStyle - 时间线样式获取函数
 * @param {string} borderColor - 边框颜色
 */
const VerticalModeLayout = React.memo(({
  display = 'flex',
  events,
  selectedEvent,
  onEventSelect,
  eventFollowStatus,
  onToggleFollow,
  getTimelineBoxStyle,
  borderColor,
}) => {
  // 详情面板重置 key（预留，用于未来功能）
  const [detailPanelKey] = useState(0);

  // 响应式布局
  const isMobile = useBreakpointValue({ base: true, lg: false });
  const flexDirection = useBreakpointValue({ base: 'column', lg: 'row' });
  const gap = useBreakpointValue({ base: 3, lg: 6 });

  // 移动端模态框控制
  const { isOpen: isMobileModalOpen, onOpen: onMobileModalOpen, onClose: onMobileModalClose } = useDisclosure();
  const [mobileSelectedEvent, setMobileSelectedEvent] = useState(null);

  // 处理移动端事件点击
  const handleMobileEventClick = (event) => {
    if (isMobile) {
      setMobileSelectedEvent(event);
      onMobileModalOpen();
    } else {
      onEventSelect(event);
    }
  };

  // 固定布局比例：左侧（4），右侧（6）- 平衡布局，确保左侧有足够空间显示内容
  const leftFlex = '4';
  const rightFlex = '6';

  return (
    <Flex
      display={display}
      direction={flexDirection}
      gap={gap}
      position="relative"
      transition="all 0.3s ease-in-out"
      h="100%"
      overflow="hidden"
    >
      {/* 左侧：事件列表 - 独立滚动 */}
      <Box
        flex={isMobile ? '1' : leftFlex}
        minWidth={0}
        w={isMobile ? '100%' : 'auto'}
        overflowY="auto"
        h="100%"
        data-event-list-container="true"
        css={{
          overscrollBehavior: 'contain',
          '&::-webkit-scrollbar': {
            width: '6px',
          },
          '&::-webkit-scrollbar-track': {
            background: '#f1f1f1',
          },
          '&::-webkit-scrollbar-thumb': {
            background: '#888',
            borderRadius: '3px',
          },
          '&::-webkit-scrollbar-thumb:hover': {
            background: '#555',
          },
        }}
      >
        {/* 事件列表 */}
        {events && events.length > 0 ? (
          <VStack
            spacing={2}
            align="stretch"
            p={2}
          >
              {events.map((event) => (
                <HorizontalDynamicNewsEventCard
                  key={event.id}
                  event={event}
                  isSelected={selectedEvent?.id === event.id}
                  onEventClick={() => handleMobileEventClick(event)}
                  isFollowing={eventFollowStatus[event.id]?.isFollowing}
                  followerCount={eventFollowStatus[event.id]?.followerCount}
                  onToggleFollow={onToggleFollow}
                  timelineStyle={getTimelineBoxStyle()}
                  borderColor={borderColor}
                  indicatorSize="default"
                  layout="vertical"
                />
              ))}
          </VStack>
        ) : (
          /* 空状态 */
          <Center h="100%" minH="400px">
            <VStack spacing={4}>
              <InfoIcon w={12} h={12} color="gray.400" />
              <Text fontSize="lg" color="gray.500" textAlign="center">
                当前筛选条件下暂无数据
              </Text>
              <Text fontSize="sm" color="gray.400" textAlign="center">
                请尝试调整筛选条件
              </Text>
            </VStack>
          </Center>
        )}
      </Box>

      {/* 右侧：事件详情 - 独立滚动 - 移动端隐藏 */}
      {!isMobile && (
        <Box
          flex={rightFlex}
          minHeight={0}
          position="relative"
          overflow="hidden"
          h="100%"
        >
          {/* 详情面板 */}
          <EventDetailScrollPanel
            key={detailPanelKey}
            detailMode="no-header"
            selectedEvent={selectedEvent}
          />
        </Box>
      )}

      {/* 移动端详情弹窗 */}
      {isMobile && (
        <EventDetailModal
          open={isMobileModalOpen}
          onClose={onMobileModalClose}
          event={mobileSelectedEvent}
        />
      )}
    </Flex>
  );
});

export default VerticalModeLayout;