import React, { useState, useEffect } from 'react';
import { Card, DatePicker, Select, Spin, Statistic, Row, Col, Tabs, Button, Table, Tag, Space, Typography } from 'antd';
import { useParams } from 'react-router-dom';
import { Line, Column, Pie, Area, DualAxes } from '@ant-design/plots';
import { ReloadOutlined, ExportOutlined, DollarOutlined, ShoppingCartOutlined, TeamOutlined, RiseOutlined } from '@ant-design/icons';

const { RangePicker } = DatePicker;
const { Option } = Select;
const { Title, Text } = Typography;

interface SalesData {
  date: string;
  sales: number;
  orders: number;
  customers: number;
}

interface ProductData {
  name: string;
  sales: number;
  quantity: number;
}

interface TrafficData {
  date: string;
  visitors: number;
  pageViews: number;
  bounceRate: number;
}

const SALES_TREND_DATA: SalesData[] = [
  { date: '2026-03-01', sales: 5200, orders: 42, customers: 35 },
  { date: '2026-03-02', sales: 6100, orders: 51, customers: 42 },
  { date: '2026-03-03', sales: 4800, orders: 38, customers: 31 },
  { date: '2026-03-04', sales: 7500, orders: 62, customers: 48 },
  { date: '2026-03-05', sales: 6800, orders: 55, customers: 45 },
  { date: '2026-03-06', sales: 8200, orders: 68, customers: 52 },
  { date: '2026-03-07', sales: 9100, orders: 75, customers: 58 },
  { date: '2026-03-08', sales: 7800, orders: 64, customers: 49 },
  { date: '2026-03-09', sales: 8500, orders: 70, customers: 55 },
  { date: '2026-03-10', sales: 9800, orders: 82, customers: 65 },
];

const PRODUCT_DATA: ProductData[] = [
  { name: '无线蓝牙耳机', sales: 15800, quantity: 158 },
  { name: '智能手表', sales: 12500, quantity: 50 },
  { name: '便携充电宝', sales: 8900, quantity: 178 },
  { name: '手机支架', sales: 6200, quantity: 310 },
  { name: '数据线套装', sales: 4500, quantity: 450 },
];

const TRAFFIC_DATA: TrafficData[] = [
  { date: '2026-03-01', visitors: 1250, pageViews: 3800, bounceRate: 35 },
  { date: '2026-03-02', visitors: 1480, pageViews: 4200, bounceRate: 32 },
  { date: '2026-03-03', visitors: 1100, pageViews: 3200, bounceRate: 38 },
  { date: '2026-03-04', visitors: 1800, pageViews: 5500, bounceRate: 28 },
  { date: '2026-03-05', visitors: 1650, pageViews: 4800, bounceRate: 30 },
  { date: '2026-03-06', visitors: 2100, pageViews: 6200, bounceRate: 25 },
  { date: '2026-03-07', visitors: 2350, pageViews: 7100, bounceRate: 22 },
  { date: '2026-03-08', visitors: 1900, pageViews: 5600, bounceRate: 27 },
  { date: '2026-03-09', visitors: 2200, pageViews: 6500, bounceRate: 24 },
  { date: '2026-03-10', visitors: 2500, pageViews: 7500, bounceRate: 20 },
];

const CONVERSION_DATA = [
  { type: '直接购买', value: 35 },
  { type: '加购后购买', value: 28 },
  { type: '收藏后购买', value: 15 },
  { type: '未转化', value: 22 },
];

const REGION_DATA = [
  { region: '美国', customers: 450, percentage: 35 },
  { region: '欧洲', customers: 320, percentage: 25 },
  { region: '东南亚', customers: 280, percentage: 22 },
  { region: '中东', customers: 150, percentage: 12 },
  { region: '其他', customers: 80, percentage: 6 },
];

const DEVICE_DATA = [
  { device: '移动端', value: 65, color: '#1890ff' },
  { device: '桌面端', value: 30, color: '#52c41a' },
  { device: '平板', value: 5, color: '#faad14' },
];

const IndependentSiteAnalytics: React.FC = () => {
  const { id } = useParams<{ id: string }>();
  const [loading, setLoading] = useState(false);
  const [dateRange, setDateRange] = useState<any>(null);
  const [timeRange, setTimeRange] = useState('30d');
  const [activeTab, setActiveTab] = useState('sales');

  useEffect(() => {
    fetchAnalyticsData();
  }, [id, timeRange, dateRange]);

  const fetchAnalyticsData = async () => {
    setLoading(true);
    setTimeout(() => {
      setLoading(false);
    }, 500);
  };

  const salesTrendConfig = {
    data: SALES_TREND_DATA.flatMap(item => [
      { date: item.date, value: item.sales, type: '销售额' },
      { date: item.date, value: item.orders * 100, type: '订单数' },
    ]),
    xField: 'date',
    yField: 'value',
    seriesField: 'type',
    smooth: true,
    legend: { position: 'top' as const },
    yAxis: { label: { formatter: (v: number) => `$${v / 1000}k` } },
  };

  const productSalesConfig = {
    data: PRODUCT_DATA,
    xField: 'name',
    yField: 'sales',
    color: '#1890ff',
    label: { text: 'sales', position: 'top' as const },
  };

  const trafficConfig = {
    data: [TRAFFIC_DATA, TRAFFIC_DATA],
    xField: 'date',
    yField: ['visitors', 'pageViews'],
    geometryOptions: [
      { geometry: 'line', color: '#1890ff', smooth: true },
      { geometry: 'line', color: '#52c41a', smooth: true },
    ],
    legend: { position: 'top' as const },
  };

  const conversionConfig = {
    data: CONVERSION_DATA,
    angleField: 'value',
    colorField: 'type',
    radius: 0.8,
    innerRadius: 0.6,
    label: { text: 'type', position: 'outside' },
    legend: { position: 'bottom' as const },
  };

  const regionConfig = {
    data: REGION_DATA,
    xField: 'region',
    yField: 'customers',
    color: '#722ed1',
    label: { text: 'customers', position: 'top' as const },
  };

  const deviceConfig = {
    data: DEVICE_DATA,
    angleField: 'value',
    colorField: 'device',
    radius: 0.8,
    innerRadius: 0.6,
    label: { text: 'device', position: 'outside' },
    legend: { position: 'bottom' as const },
  };

  const productColumns = [
    { title: '商品名称', dataIndex: 'name', key: 'name' },
    { title: '销售额', dataIndex: 'sales', key: 'sales', render: (v: number) => `$${v.toLocaleString()}` },
    { title: '销量', dataIndex: 'quantity', key: 'quantity' },
    { title: '占比', key: 'percentage', render: (_: any, record: ProductData) => {
      const total = PRODUCT_DATA.reduce((sum, p) => sum + p.sales, 0);
      return `${((record.sales / total) * 100).toFixed(1)}%`;
    }},
  ];

  const tabItems = [
    {
      key: 'sales',
      label: '销售分析',
      children: (
        <Row gutter={16}>
          <Col span={24}>
            <Card title="销售趋势">
              <Line {...salesTrendConfig} height={300} />
            </Card>
          </Col>
          <Col xs={24} lg={16} style={{ marginTop: 16 }}>
            <Card title="商品销售排行">
              <Column {...productSalesConfig} height={280} />
            </Card>
          </Col>
          <Col xs={24} lg={8} style={{ marginTop: 16 }}>
            <Card title="转化漏斗">
              <Pie {...conversionConfig} height={280} />
            </Card>
          </Col>
          <Col span={24} style={{ marginTop: 16 }}>
            <Card title="商品销售明细">
              <Table columns={productColumns} dataSource={PRODUCT_DATA} rowKey="name" pagination={false} />
            </Card>
          </Col>
        </Row>
      ),
    },
    {
      key: 'traffic',
      label: '流量分析',
      children: (
        <Row gutter={16}>
          <Col span={24}>
            <Card title="流量趋势">
              <DualAxes {...trafficConfig} height={300} />
            </Card>
          </Col>
          <Col xs={24} lg={12} style={{ marginTop: 16 }}>
            <Card title="设备分布">
              <Pie {...deviceConfig} height={280} />
            </Card>
          </Col>
          <Col xs={24} lg={12} style={{ marginTop: 16 }}>
            <Card title="流量来源">
              <Table
                columns={[
                  { title: '来源', dataIndex: 'source', key: 'source' },
                  { title: '访客数', dataIndex: 'visitors', key: 'visitors' },
                  { title: '占比', dataIndex: 'percentage', key: 'percentage', render: (v: number) => `${v}%` },
                ]}
                dataSource={[
                  { key: '1', source: '搜索引擎', visitors: 3500, percentage: 42 },
                  { key: '2', source: '社交媒体', visitors: 2100, percentage: 25 },
                  { key: '3', source: '直接访问', visitors: 1500, percentage: 18 },
                  { key: '4', source: '广告投放', visitors: 800, percentage: 10 },
                  { key: '5', source: '其他', visitors: 400, percentage: 5 },
                ]}
                pagination={false}
              />
            </Card>
          </Col>
        </Row>
      ),
    },
    {
      key: 'customer',
      label: '客户分析',
      children: (
        <Row gutter={16}>
          <Col xs={24} lg={16}>
            <Card title="客户地域分布">
              <Column {...regionConfig} height={300} />
            </Card>
          </Col>
          <Col xs={24} lg={8}>
            <Card title="客户类型">
              <Pie
                data={[
                  { type: '新客户', value: 45 },
                  { type: '回头客', value: 35 },
                  { type: 'VIP客户', value: 20 },
                ]}
                angleField="value"
                colorField="type"
                radius={0.8}
                innerRadius={0.6}
                label={{ text: 'type', position: 'outside' }}
                height={280}
              />
            </Card>
          </Col>
          <Col span={24} style={{ marginTop: 16 }}>
            <Card title="客户购买行为分析">
              <Row gutter={16}>
                <Col span={6}>
                  <Statistic title="平均订单金额" value={125} prefix={<DollarOutlined />} suffix="USD" />
                </Col>
                <Col span={6}>
                  <Statistic title="复购率" value={35} suffix="%" valueStyle={{ color: '#52c41a' }} prefix={<RiseOutlined />} />
                </Col>
                <Col span={6}>
                  <Statistic title="平均购买频次" value={2.3} suffix="次/月" />
                </Col>
                <Col span={6}>
                  <Statistic title="客户满意度" value={4.8} suffix="/ 5.0" valueStyle={{ color: '#faad14' }} />
                </Col>
              </Row>
            </Card>
          </Col>
        </Row>
      ),
    },
  ];

  return (
    <div className="independent-site-analytics" style={{ padding: 24 }}>
      <Row justify="space-between" align="middle" style={{ marginBottom: 24 }}>
        <Col>
          <Title level={4}>独立站数据分析</Title>
          <Text type="secondary">站点ID: {id}</Text>
        </Col>
        <Col>
          <Space>
            <Select value={timeRange} onChange={setTimeRange} style={{ width: 120 }}>
              <Option value="7d">7天</Option>
              <Option value="30d">30天</Option>
              <Option value="90d">90天</Option>
              <Option value="1y">1年</Option>
            </Select>
            <RangePicker onChange={setDateRange} />
            <Button icon={<ReloadOutlined />} onClick={fetchAnalyticsData}>刷新</Button>
            <Button type="primary" icon={<ExportOutlined />}>导出</Button>
          </Space>
        </Col>
      </Row>

      {loading ? (
        <div style={{ textAlign: 'center', padding: '50px 0' }}>
          <Spin size="large" />
        </div>
      ) : (
        <>
          <Row gutter={16} style={{ marginBottom: 24 }}>
            <Col xs={12} sm={6}>
              <Card>
                <Statistic title="总销售额" value={73800} precision={2} prefix={<DollarOutlined />} suffix="USD" valueStyle={{ color: '#3f8600' }} />
              </Card>
            </Col>
            <Col xs={12} sm={6}>
              <Card>
                <Statistic title="总订单数" value={607} prefix={<ShoppingCartOutlined />} />
              </Card>
            </Col>
            <Col xs={12} sm={6}>
              <Card>
                <Statistic title="总客户数" value={480} prefix={<TeamOutlined />} />
              </Card>
            </Col>
            <Col xs={12} sm={6}>
              <Card>
                <Statistic title="转化率" value={4.2} precision={2} suffix="%" valueStyle={{ color: '#722ed1' }} prefix={<RiseOutlined />} />
              </Card>
            </Col>
          </Row>

          <Tabs activeKey={activeTab} onChange={setActiveTab} items={tabItems} />
        </>
      )}
    </div>
  );
};

export default IndependentSiteAnalytics;