/**
 * 3D 可视化插件组件
 * 后端生成 Plotly HTML，前端通过 iframe 加载
 */
import { useState, useEffect } from 'react';
import { Button, Spin, Typography, Modal, Empty } from 'antd';
import {
  ExpandOutlined,
  ReloadOutlined
} from '@ant-design/icons';
import api from '../../services/api';

const { Text } = Typography;

const Visualization3D = ({ code = '' }) => {
  const [htmlUrl, setHtmlUrl] = useState(null);
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState(null);
  const [fullscreen, setFullscreen] = useState(false);

  const generate = async (codeToRun) => {
    const targetCode = codeToRun || code;
    if (!targetCode) return;

    setLoading(true);
    setError(null);

    try {
      const response = await api.post('/visualization/3d-surface', { code: targetCode });
      if (response.success) {
        // html_url 是相对于后端的路径，需要加上后端地址
        setHtmlUrl(response.html_url);
      } else {
        setError(response.message || '生成失败');
      }
    } catch (e) {
      setError(e.message || '请求失败');
    } finally {
      setLoading(false);
    }
  };

  // 当 code 变化时自动生成
  useEffect(() => {
    if (code) generate(code);
  }, [code]);

  return (
    <div style={{ display: 'flex', flexDirection: 'column', height: '100%', gap: '8px' }}>
      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
        <Text strong style={{ fontSize: '13px' }}>3D 可视化</Text>
        <div>
          {htmlUrl && (
            <Button
              size="small"
              icon={<ExpandOutlined />}
              onClick={() => setFullscreen(true)}
              style={{ marginRight: '8px' }}
            >
              全屏
            </Button>
          )}
          <Button
            size="small"
            icon={<ReloadOutlined />}
            onClick={() => generate()}
            disabled={!code || loading}
          >
            重新生成
          </Button>
        </div>
      </div>

      <div style={{
        flex: 1,
        borderRadius: '6px',
        border: '1px solid rgba(0,0,0,0.1)',
        overflow: 'hidden',
        position: 'relative',
        background: '#fff',
        minHeight: '300px'
      }}>
        {loading ? (
          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: '100%' }}>
            <Spin tip="正在生成3D图形..."><div style={{ height: 80 }} /></Spin>
          </div>
        ) : error ? (
          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: '100%' }}>
            <Empty description={<Text type="danger">{error}</Text>} />
          </div>
        ) : htmlUrl ? (
          <iframe
            src={htmlUrl}
            style={{
              position: 'absolute',
              top: 0,
              left: 0,
              width: '100%',
              height: '100%',
              border: 'none',
            }}
            title="3D Visualization"
          />
        ) : (
          <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'center', height: '100%' }}>
            <Empty description="等待生成3D图形..." />
          </div>
        )}
      </div>

      {/* 全屏模态框 */}
      <Modal
        open={fullscreen}
        onCancel={() => setFullscreen(false)}
        footer={null}
        width="90vw"
        style={{ top: '5vh' }}
        styles={{ body: { height: '80vh', padding: 0 } }}
        destroyOnClose
      >
        {htmlUrl && (
          <iframe
            src={htmlUrl}
            style={{ width: '100%', height: '80vh', border: 'none' }}
            title="3D Visualization Fullscreen"
          />
        )}
      </Modal>
    </div>
  );
};

export default Visualization3D;