/**
 * 风险热力图组件 (V3.1)
 * 
 * 展示受试者 × 事件 矩阵
 * - 绿色圆点：通过
 * - 黄色图标：警告（可点击）
 * - 红色图标：严重（可点击）
 * - 灰色圆点：未开始
 */

import React from 'react';
import { Spin, Tag, Tooltip } from 'antd';
import {
  ExclamationOutlined,
  CloseOutlined,
} from '@ant-design/icons';
import type { HeatmapData, HeatmapCell } from '../../types/qcCockpit';

interface RiskHeatmapProps {
  data: HeatmapData;
  onCellClick: (cell: HeatmapCell) => void;
  loading?: boolean;
}

const RiskHeatmap: React.FC<RiskHeatmapProps> = ({ data, onCellClick, loading }) => {
  const columnLabels = data.columnLabels || {};

  const getStatusTag = (status: string) => {
    switch (status) {
      case 'enrolled':
        return <Tag color="cyan">已入组</Tag>;
      case 'screening':
        return <Tag color="blue">筛查中</Tag>;
      case 'completed':
        return <Tag color="green">已完成</Tag>;
      case 'withdrawn':
        return <Tag color="default">已退出</Tag>;
      default:
        return <Tag>{status}</Tag>;
    }
  };

  const getColumnLabel = (col: string): string => {
    if (columnLabels[col]) return columnLabels[col];
    if (col.includes('(')) return col.split('(')[0];
    return col;
  };

  const renderCell = (cell: HeatmapCell) => {
    const hasIssues = cell.status === 'warning' || cell.status === 'fail';
    const handleClick = () => onCellClick(cell);
    
    if (hasIssues) {
      const iconClass = `qc-heatmap-cell-icon ${cell.status}`;
      const icon = cell.status === 'fail' 
        ? <CloseOutlined />
        : <ExclamationOutlined />;
      
      return (
        <Tooltip title={`${cell.issueCount} 个问题，点击查看详情`}>
          <div className={iconClass} onClick={handleClick} style={{ cursor: 'pointer' }}>
            {icon}
          </div>
        </Tooltip>
      );
    }
    
    const dotClass = `qc-heatmap-cell-dot ${cell.status === 'pass' ? 'pass' : 'pending'}`;
    const tooltipText = cell.status === 'pass' 
      ? '已通过，点击查看数据' 
      : '未质控，点击查看数据';
    
    return (
      <Tooltip title={tooltipText}>
        <div 
          className={dotClass} 
          onClick={handleClick}
          style={{ 
            backgroundColor: cell.status === 'pass' ? '#52c41a' : '#d9d9d9',
            cursor: 'pointer',
          }} 
        />
      </Tooltip>
    );
  };

  return (
    <div className="qc-heatmap">
      <div className="qc-heatmap-header">
        <h3 className="qc-heatmap-title">受试者风险全景图 (Risk Heatmap)</h3>
        <div className="qc-heatmap-legend">
          <span className="qc-heatmap-legend-item">
            <span className="qc-heatmap-legend-dot pass" />
            无异常
          </span>
          <span className="qc-heatmap-legend-item">
            <span className="qc-heatmap-legend-dot warning" />
            疑问 (Query)
          </span>
          <span className="qc-heatmap-legend-item">
            <span className="qc-heatmap-legend-dot fail" />
            严重违规
          </span>
          <span className="qc-heatmap-legend-item">
            <span className="qc-heatmap-legend-dot pending" />
            未开始
          </span>
        </div>
      </div>

      <div className="qc-heatmap-body">
        <Spin spinning={loading}>
          <table className="qc-heatmap-table">
            <thead>
              <tr>
                <th className="subject-header">受试者 ID</th>
                <th>入组状态</th>
                {data.columns.map((col, idx) => {
                  const label = getColumnLabel(col);
                  return (
                    <th key={idx}>
                      <Tooltip title={col !== label ? col : undefined}>
                        <span>{label}</span>
                      </Tooltip>
                    </th>
                  );
                })}
              </tr>
            </thead>
            <tbody>
              {data.rows.map((row, rowIdx) => (
                <tr key={rowIdx}>
                  <td className="subject-cell">{row.recordId}</td>
                  <td>{getStatusTag(row.status)}</td>
                  {row.cells.map((cell, cellIdx) => (
                    <td key={cellIdx}>
                      <div className="qc-heatmap-cell">
                        {renderCell(cell)}
                      </div>
                    </td>
                  ))}
                </tr>
              ))}
            </tbody>
          </table>
        </Spin>
      </div>
    </div>
  );
};

export default RiskHeatmap;