// 全局布局组件 - 包含左侧菜单和头部
import React, { useState, useEffect } from 'react';
import { Layout, Menu, Typography, Avatar, Dropdown, Badge, Space } from 'antd';
import {
  DashboardOutlined,
  ShoppingOutlined,
  FileTextOutlined,
  UserOutlined,
  TruckOutlined,
  AlertOutlined,
  AuditOutlined,
  DollarOutlined,
  BarChartOutlined,
  SettingOutlined,
  TeamOutlined,
  MenuFoldOutlined,
  MenuUnfoldOutlined,
  BellOutlined,
  DownOutlined,
  ShopOutlined,
  ScheduleOutlined,
  WalletOutlined,
  SafetyCertificateOutlined,
  GlobalOutlined,
  TrophyOutlined,
  RobotOutlined,
  SwapOutlined,
  ThunderboltOutlined,
} from '@ant-design/icons';
import { Link, useLocation, useNavigate, Outlet } from 'react-router-dom';
import type { MenuProps } from 'antd';

const { Header, Sider, Content } = Layout;
const { Title, Text } = Typography;

type MenuItem = MenuProps['items'][number];

// 菜单项配置
const menuItems: MenuItem[] = [
  // 核心业务
  {
    key: 'core',
    icon: <ShoppingOutlined />,
    label: '核心业务',
    children: [
      {
        key: '/Product',
        label: <Link to="/Product">商品管理</Link>,
      },
      {
        key: '/Orders',
        label: <Link to="/Orders">订单管理</Link>,
      },
      {
        key: '/Logistics',
        label: <Link to="/Logistics">物流管理</Link>,
      },
      {
        key: '/AfterSales',
        label: <Link to="/AfterSales">售后服务</Link>,
      },
    ],
  },
  // 商户与贸易
  {
    key: 'merchant',
    icon: <ShopOutlined />,
    label: '商户与贸易',
    children: [
      {
        key: '/Merchant',
        label: <Link to="/Merchant">商户管理</Link>,
      },
      {
        key: '/B2B',
        label: <Link to="/B2B">B2B贸易</Link>,
      },
    ],
  },
  // 营销与增长
  {
    key: 'marketing',
    icon: <BarChartOutlined />,
    label: '营销与增长',
    children: [
      {
        key: '/Ad',
        label: <Link to="/Ad">广告管理</Link>,
      },
      {
        key: '/DynamicPricing',
        label: <Link to="/DynamicPricing">动态定价</Link>,
      },
      {
        key: '/StrategyMarketplace',
        label: <Link to="/StrategyMarketplace">策略市场</Link>,
      },
    ],
  },
  // 数据分析
  {
    key: 'analytics',
    icon: <GlobalOutlined />,
    label: '数据分析',
    children: [
      {
        key: '/Analytics',
        label: <Link to="/Analytics">数据分析</Link>,
      },
      {
        key: '/Leaderboard',
        label: <Link to="/Leaderboard">收益排行榜</Link>,
      },
      {
        key: '/ArbitrageMonitor',
        label: <Link to="/ArbitrageMonitor">套利监控</Link>,
      },
    ],
  },
  // 智能运营
  {
    key: 'ai',
    icon: <RobotOutlined />,
    label: '智能运营',
    children: [
      {
        key: '/AutoPilot',
        label: <Link to="/AutoPilot">AI托管</Link>,
      },
      {
        key: '/TaskCenter',
        label: <Link to="/TaskCenter">任务中心</Link>,
      },
    ],
  },
  // 合规与安全
  {
    key: 'compliance',
    icon: <SafetyCertificateOutlined />,
    label: '合规与安全',
    children: [
      {
        key: '/Compliance',
        label: <Link to="/Compliance">合规管理</Link>,
      },
      {
        key: '/Blacklist',
        label: <Link to="/Blacklist">黑名单管理</Link>,
      },
    ],
  },
  // 财务管理
  {
    key: '/Finance',
    icon: <WalletOutlined />,
    label: <Link to="/Finance">财务管理</Link>,
  },
  // 系统管理
  {
    key: 'system',
    icon: <SettingOutlined />,
    label: '系统管理',
    children: [
      {
        key: '/User',
        label: <Link to="/User">用户管理</Link>,
      },
      {
        key: '/Role',
        label: <Link to="/Role">角色管理</Link>,
      },
      {
        key: '/Settings',
        label: <Link to="/Settings">系统设置</Link>,
      },
    ],
  },
];

// 用户菜单项
const userMenuItems: MenuItem[] = [
  {
    key: 'profile',
    label: '个人中心',
  },
  {
    key: 'settings',
    label: '账号设置',
  },
  {
    key: 'divider-1',
    type: 'divider',
  },
  {
    key: 'logout',
    label: '退出登录',
  },
];

const MainLayout: React.FC = () => {
  const location = useLocation();
  const navigate = useNavigate();
  const [collapsed, setCollapsed] = useState(false);
  const [selectedKeys, setSelectedKeys] = useState<string[]>(['/']);

  // 根据当前路径设置选中的菜单项
  useEffect(() => {
    const pathname = location.pathname;
    const findKey = (items: MenuItem[]): string | undefined => {
      for (const item of items) {
        if (item && 'key' in item && typeof item.key === 'string') {
          if (item.key.startsWith('/') && pathname.startsWith(item.key)) {
            return item.key;
          }
          if ('children' in item && Array.isArray(item.children)) {
            const found = findKey(item.children as MenuItem[]);
            if (found) return found;
          }
        }
      }
      return undefined;
    };
    
    const matchedKey = findKey(menuItems);
    if (matchedKey) {
      setSelectedKeys([matchedKey]);
    }
  }, [location.pathname]);

  // 从 localStorage 读取菜单折叠状态
  useEffect(() => {
    const savedCollapsed = localStorage.getItem('sidebar_collapsed');
    if (savedCollapsed !== null) {
      setCollapsed(savedCollapsed === 'true');
    }
  }, []);

  // 保存菜单折叠状态到 localStorage
  const handleCollapse = (value: boolean) => {
    setCollapsed(value);
    localStorage.setItem('sidebar_collapsed', String(value));
  };

  const handleUserMenuClick = ({ key }: { key: string }) => {
    if (key === 'logout') {
      // 处理登出逻辑
      localStorage.removeItem('token');
      navigate('/Auth/LoginPage');
    } else if (key === 'profile') {
      navigate('/Settings/ProfileSettings');
    } else if (key === 'settings') {
      navigate('/Settings');
    }
  };

  return (
    <Layout style={{ minHeight: '100vh' }}>
      {/* 左侧菜单栏 */}
      <Sider
        trigger={null}
        collapsible
        collapsed={collapsed}
        collapsedWidth={80}
        width={220}
        style={{
          background: '#001529',
          position: 'fixed',
          left: 0,
          top: 0,
          bottom: 0,
          zIndex: 100,
          boxShadow: '2px 0 8px rgba(0, 0, 0, 0.15)',
        }}
      >
        {/* Logo 区域 */}
        <div
          style={{
            height: '64px',
            display: 'flex',
            alignItems: 'center',
            justifyContent: collapsed ? 'center' : 'flex-start',
            padding: collapsed ? '0' : '0 24px',
            background: '#002140',
            borderBottom: '1px solid rgba(255, 255, 255, 0.1)',
          }}
        >
          {collapsed ? (
            <div style={{ color: '#fff', fontSize: '20px', fontWeight: 'bold' }}>C</div>
          ) : (
            <Title level={4} style={{ color: '#fff', margin: 0, whiteSpace: 'nowrap' }}>
              Crawlful Hub
            </Title>
          )}
        </div>

        {/* 菜单 */}
        <Menu
          theme="dark"
          mode="inline"
          selectedKeys={selectedKeys}
          items={menuItems}
          style={{
            borderRight: 0,
            paddingTop: '8px',
          }}
        />
      </Sider>

      {/* 右侧内容区域 */}
      <Layout
        style={{
          marginLeft: collapsed ? 80 : 220,
          transition: 'all 0.2s',
        }}
      >
        {/* 顶部Header */}
        <Header
          style={{
            background: '#fff',
            padding: '0 24px',
            display: 'flex',
            alignItems: 'center',
            justifyContent: 'space-between',
            boxShadow: '0 1px 4px rgba(0, 21, 41, 0.08)',
            position: 'sticky',
            top: 0,
            zIndex: 99,
          }}
        >
          {/* 左侧：折叠按钮 */}
          <div
            style={{
              display: 'flex',
              alignItems: 'center',
              cursor: 'pointer',
              padding: '8px',
              borderRadius: '4px',
              transition: 'background 0.3s',
            }}
            onClick={() => handleCollapse(!collapsed)}
            onMouseEnter={(e) => {
              e.currentTarget.style.background = '#f0f0f0';
            }}
            onMouseLeave={(e) => {
              e.currentTarget.style.background = 'transparent';
            }}
          >
            {collapsed ? <MenuUnfoldOutlined style={{ fontSize: '18px' }} /> : <MenuFoldOutlined style={{ fontSize: '18px' }} />}
          </div>

          {/* 右侧：通知和用户 */}
          <Space size={24}>
            {/* 通知图标 */}
            <Badge count={5} size="small">
              <BellOutlined style={{ fontSize: '18px', cursor: 'pointer', color: '#666' }} />
            </Badge>

            {/* 用户下拉菜单 */}
            <Dropdown
              menu={{ items: userMenuItems, onClick: handleUserMenuClick }}
              placement="bottomRight"
            >
              <Space style={{ cursor: 'pointer' }}>
                <Avatar style={{ backgroundColor: '#1890ff' }} icon={<UserOutlined />} />
                {!collapsed && (
                  <>
                    <Text strong>管理员</Text>
                    <DownOutlined style={{ fontSize: '12px', color: '#999' }} />
                  </>
                )}
              </Space>
            </Dropdown>
          </Space>
        </Header>

        {/* 主内容区域 */}
        <Content
          style={{
            margin: '24px',
            padding: '24px',
            background: '#f0f2f5',
            minHeight: 280,
          }}
        >
          <div
            style={{
              background: '#fff',
              padding: '24px',
              borderRadius: '8px',
              minHeight: 'calc(100vh - 184px)',
              boxShadow: '0 1px 2px rgba(0, 0, 0, 0.06)',
            }}
          >
            <Outlet />
          </div>
        </Content>
      </Layout>
    </Layout>
  );
};

export default MainLayout;