// src/components/EventDetailPanel/RelatedConceptsSection/index.js
// 相关概念区组件 - 便当盒网格布局

import React, { useState, useEffect } from 'react';
import {
  Box,
  Flex,
  Heading,
  Center,
  Spinner,
  Text,
  Badge,
  SimpleGrid,
  HStack,
  Tooltip,
  useColorModeValue,
} from '@chakra-ui/react';
import { useNavigate } from 'react-router-dom';
import { logger } from '@utils/logger';
import { getApiBase } from '@utils/apiConfig';

/**
 * 单个概念卡片组件（便当盒样式）
 */
const ConceptCard = ({ concept, onNavigate, isLocked, onLockedClick }) => {
  // 深色主题固定颜色
  const cardBg = 'rgba(252, 129, 129, 0.15)';  // 浅红色背景
  const cardHoverBg = 'rgba(252, 129, 129, 0.25)';
  const borderColor = 'rgba(252, 129, 129, 0.3)';
  const conceptColor = '#fc8181';  // 红色文字（与股票涨色一致）

  const handleClick = () => {
    if (isLocked && onLockedClick) {
      onLockedClick();
      return;
    }
    onNavigate(concept);
  };

  return (
    <Tooltip
      label={concept.reason || concept.concept}
      placement="top"
      hasArrow
      bg="gray.800"
      color="white"
      p={2}
      borderRadius="md"
      maxW="300px"
      fontSize="xs"
    >
      <Box
        bg={cardBg}
        borderWidth="1px"
        borderColor={borderColor}
        borderRadius="lg"
        px={3}
        py={2}
        cursor="pointer"
        onClick={handleClick}
        _hover={{
          bg: cardHoverBg,
          transform: 'translateY(-1px)',
          boxShadow: 'sm',
        }}
        transition="all 0.15s ease"
        textAlign="center"
      >
        <Text
          fontSize="sm"
          fontWeight="semibold"
          color={conceptColor}
          noOfLines={1}
        >
          {concept.concept}
        </Text>
      </Box>
    </Tooltip>
  );
};

/**
 * 相关概念区组件
 * @param {Object} props
 * @param {number} props.eventId - 事件ID（用于获取 related_concepts 表数据）
 * @param {string} props.eventTitle - 事件标题（备用）
 * @param {React.ReactNode} props.subscriptionBadge - 订阅徽章组件（可选）
 * @param {boolean} props.isLocked - 是否锁定（需要付费）
 * @param {Function} props.onLockedClick - 锁定时的点击回调
 */
const RelatedConceptsSection = ({
  eventId,
  eventTitle,
  subscriptionBadge = null,
  isLocked = false,
  onLockedClick = null,
}) => {
  const [concepts, setConcepts] = useState([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState(null);
  const navigate = useNavigate();

  // 颜色配置 - 使用深色主题固定颜色
  const sectionBg = 'transparent';
  const headingColor = '#e2e8f0';
  const textColor = '#a0aec0';
  const countBadgeBg = '#3182ce';
  const countBadgeColor = '#ffffff';

  // 获取相关概念
  useEffect(() => {
    const fetchConcepts = async () => {
      if (!eventId) {
        setLoading(false);
        return;
      }

      try {
        setLoading(true);
        setError(null);

        const apiUrl = `${getApiBase()}/api/events/${eventId}/concepts`;
        const response = await fetch(apiUrl, {
          method: 'GET',
          headers: { 'Content-Type': 'application/json' },
          credentials: 'include'
        });

        if (!response.ok) {
          if (response.status === 403) {
            setConcepts([]);
            setLoading(false);
            return;
          }
          throw new Error(`HTTP error! status: ${response.status}`);
        }

        const data = await response.json();
        if (data.success && Array.isArray(data.data)) {
          setConcepts(data.data);
        } else {
          setConcepts([]);
        }
      } catch (err) {
        console.error('[RelatedConceptsSection] 获取概念失败', err);
        logger.error('RelatedConceptsSection', 'fetchConcepts', err);
        setError('加载概念数据失败');
        setConcepts([]);
      } finally {
        setLoading(false);
      }
    };

    fetchConcepts();
  }, [eventId]);

  // 跳转到概念中心
  const handleNavigate = (concept) => {
    navigate(`/concepts?q=${encodeURIComponent(concept.concept)}`);
  };

  // 加载中状态
  if (loading) {
    return (
      <Box bg={sectionBg} p={3} borderRadius="md">
        <Center py={4}>
          <Spinner size="sm" color="blue.500" mr={2} />
          <Text color={textColor} fontSize="sm">加载相关概念中...</Text>
        </Center>
      </Box>
    );
  }

  const hasNoConcepts = !concepts || concepts.length === 0;

  return (
    <Box bg={sectionBg} p={3} borderRadius="md">
      {/* 标题栏 */}
      <Flex justify="space-between" align="center" mb={3}>
        <HStack spacing={2}>
          <Heading size="sm" color={headingColor}>
            相关概念
          </Heading>
          {!hasNoConcepts && (
            <Badge
              bg={countBadgeBg}
              color={countBadgeColor}
              fontSize="xs"
              px={2}
              py={0.5}
              borderRadius="full"
            >
              {concepts.length}
            </Badge>
          )}
          {subscriptionBadge}
        </HStack>
      </Flex>

      {/* 概念列表 - 便当盒网格布局 */}
      {hasNoConcepts ? (
        <Box py={2}>
          {error ? (
            <Text color="red.500" fontSize="sm">{error}</Text>
          ) : (
            <Text color={textColor} fontSize="sm">暂无相关概念数据</Text>
          )}
        </Box>
      ) : (
        <SimpleGrid columns={{ base: 2, sm: 3, md: 4 }} spacing={2}>
          {concepts.map((concept, index) => (
            <ConceptCard
              key={concept.id || index}
              concept={concept}
              onNavigate={handleNavigate}
              isLocked={isLocked}
              onLockedClick={onLockedClick}
            />
          ))}
        </SimpleGrid>
      )}
    </Box>
  );
};

export default RelatedConceptsSection;