import React, { useState } from 'react';
import './MixedNavigation.css';

const DEFAULT_MENU = [
  { name: '工作台', items: [{ name: '概览', desc: '数据看板总览' }, { name: '待办', desc: '我的待处理任务' }, { name: '报表', desc: '统计报表入口' }] },
  { name: '系统管理', items: [{ name: '用户管理', desc: '用户增删改查' }, { name: '角色管理', desc: '角色与权限分配' }, { name: '菜单管理', desc: '导航菜单配置' }] },
  { name: '业务中心', items: [{ name: '订单', desc: '订单列表与详情' }, { name: '商品', desc: '商品上下架' }, { name: '库存', desc: '库存预警' }] }
];

export default function MixedNavigation({ menu = DEFAULT_MENU }) {
  const [topIdx, setTopIdx] = useState(0);
  const [sideIdx, setSideIdx] = useState(0);
  const cur = menu[topIdx];

  return (
    <div className="aa-mixed">
      <div className="aa-mixed-top">
        {menu.map((m, i) => (
          <div
            key={i}
            className={'aa-mixed-topitem' + (topIdx === i ? ' is-active' : '')}
            onClick={() => {
              setTopIdx(i);
              setSideIdx(0);
            }}
          >
            {m.name}
          </div>
        ))}
      </div>
      <div className="aa-mixed-body">
        <div className="aa-mixed-side">
          {cur.items.map((it, i) => (
            <div
              key={i}
              className={'aa-mixed-sideitem' + (sideIdx === i ? ' is-active' : '')}
              onClick={() => setSideIdx(i)}
            >
              {it.name}
            </div>
          ))}
        </div>
        <div className="aa-mixed-content">
          <h4>
            {cur.name} / {cur.items[sideIdx].name}
          </h4>
          <div>{cur.items[sideIdx].desc}</div>
        </div>
      </div>
    </div>
  );
}