// src/views/Community/components/PopularKeywords.js
import React, { useState, useEffect } from 'react';
import { Card, Tag, Space, Spin, Empty, Button } from 'antd';
import { FireOutlined, RightOutlined } from '@ant-design/icons';

const API_BASE_URL = process.env.NODE_ENV === 'production'
    ? '/concept-api'
    : 'http://192.168.1.58:6801';

// 获取域名前缀
const DOMAIN_PREFIX = process.env.NODE_ENV === 'production'
    ? ''
    : 'https://valuefrontier.cn';

const PopularKeywords = ({ onKeywordClick }) => {
    const [keywords, setKeywords] = useState([]);
    const [loading, setLoading] = useState(false);

    // 加载热门概念（涨幅前20）
    const loadPopularConcepts = async () => {
        setLoading(true);
        try {
            const response = await fetch(`${API_BASE_URL}/search`, {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({
                    query: '',  // 空查询获取所有概念
                    size: 20,   // 获取前20个
                    page: 1,
                    sort_by: 'change_pct'  // 按涨跌幅排序
                })
            });

            const data = await response.json();

            if (data.results) {
                // 转换数据格式
                const formattedData = data.results.map(item => ({
                    keyword: item.concept,
                    count: item.stock_count,
                    change_pct: item.price_info?.avg_change_pct || 0,
                    concept_id: item.concept_id
                }));
                setKeywords(formattedData);
            }
        } catch (error) {
            console.error('Failed to load popular concepts:', error);
            setKeywords([]);
        } finally {
            setLoading(false);
        }
    };

    // 组件挂载时加载数据
    useEffect(() => {
        loadPopularConcepts();
    }, []);

    // 根据涨跌幅获取标签颜色
    const getTagColor = (changePct) => {
        if (changePct > 5) return 'red';
        if (changePct > 3) return 'volcano';
        if (changePct > 1) return 'orange';
        if (changePct > 0) return 'gold';
        if (changePct === 0) return 'default';
        if (changePct > -1) return 'lime';
        if (changePct > -3) return 'green';
        if (changePct > -5) return 'cyan';
        return 'blue';
    };

    // 格式化涨跌幅显示
    const formatChangePct = (pct) => {
        if (pct === null || pct === undefined) return '';
        const formatted = pct.toFixed(2);
        if (pct > 0) return `+${formatted}%`;
        return `${formatted}%`;
    };

    // 处理概念标签点击 - 跳转到对应概念页面
    const handleConceptClick = (concept) => {
        // 如果原有的 onKeywordClick 存在，可以选择是否还要调用
        // onKeywordClick && onKeywordClick(concept.keyword);

        // 跳转到对应概念的页面
        const url = `${DOMAIN_PREFIX}/htmls/${encodeURIComponent(concept.keyword)}.html`;
        window.open(url, '_blank');
    };

    // 查看更多概念
    const handleViewMore = () => {
        const url = `${DOMAIN_PREFIX}/concepts`;
        window.open(url, '_blank');
    };

    return (
        <Card
            title={
                <span>
                    <FireOutlined style={{ marginRight: 8, color: '#ff4d4f' }} />
                    热门概念
                </span>
            }
            className="popular-keywords"
            style={{ marginBottom: 16 }}
            extra={
                <span style={{ fontSize: 12, color: '#999' }}>
                    涨幅TOP20
                </span>
            }
        >
            <Spin spinning={loading}>
                {keywords && keywords.length > 0 ? (
                    <>
                        <Space size={[8, 8]} wrap style={{ marginBottom: 16 }}>
                            {keywords.map((item) => (
                                <Tag
                                    key={item.concept_id}
                                    color={getTagColor(item.change_pct)}
                                    style={{
                                        cursor: 'pointer',
                                        marginBottom: 8,
                                        padding: '2px 8px',
                                        transition: 'all 0.3s'
                                    }}
                                    onClick={() => handleConceptClick(item)}
                                    onMouseEnter={(e) => {
                                        e.currentTarget.style.transform = 'scale(1.05)';
                                        e.currentTarget.style.boxShadow = '0 2px 8px rgba(0,0,0,0.15)';
                                    }}
                                    onMouseLeave={(e) => {
                                        e.currentTarget.style.transform = 'scale(1)';
                                        e.currentTarget.style.boxShadow = 'none';
                                    }}
                                >
                                    <span>{item.keyword}</span>
                                    <span style={{
                                        marginLeft: 6,
                                        fontWeight: 'bold'
                                    }}>
                                        {formatChangePct(item.change_pct)}
                                    </span>
                                    <span style={{
                                        marginLeft: 4,
                                        fontSize: 11,
                                        opacity: 0.8
                                    }}>
                                        ({item.count}股)
                                    </span>
                                </Tag>
                            ))}
                        </Space>

                        {/* 查看更多按钮 */}
                        <div style={{
                            borderTop: '1px solid #f0f0f0',
                            paddingTop: 12,
                            textAlign: 'center'
                        }}>
                            <Button
                                type="link"
                                onClick={handleViewMore}
                                style={{
                                    color: '#1890ff',
                                    fontWeight: 500
                                }}
                            >
                                查看更多概念
                                <RightOutlined style={{ fontSize: 12, marginLeft: 4 }} />
                            </Button>
                        </div>
                    </>
                ) : (
                    <Empty
                        description="暂无热门概念"
                        image={Empty.PRESENTED_IMAGE_SIMPLE}
                    />
                )}
            </Spin>
        </Card>
    );
};

export default PopularKeywords;