'use client'
import {useState, useRef, useEffect} from 'react'
import Image from 'next/image'
import Link from 'next/link'
import {usePathname} from 'next/navigation'

export type AppbarProps = {}

export default function Appbar(props: AppbarProps) {
  const [currentUser] = useState({
    name: '张三',
    avatar: '/avatar.png',
    role: '管理员',
  })

  const [showDropdown, setShowDropdown] = useState(false)
  const [showNotifications, setShowNotifications] = useState(false)
  const [notifications] = useState([
    {id: 1, title: '系统通知', content: '您有新的待审核内容', time: '10分钟前', read: false},
    {id: 2, title: '安全提醒', content: '您的账号于昨天登录了新设备', time: '1小时前', read: true},
    {id: 3, title: '系统更新', content: '系统将在今晚进行例行维护', time: '2小时前', read: true},
  ])

  const pathname = usePathname()
  const dropdownRef = useRef<HTMLDivElement>(null)
  const notificationRef = useRef<HTMLDivElement>(null)

  // 处理点击外部关闭下拉菜单
  useEffect(() => {
    function handleClickOutside(event: MouseEvent) {
      if (dropdownRef.current && !dropdownRef.current.contains(event.target as Node)) {
        setShowDropdown(false)
      }
      if (notificationRef.current && !notificationRef.current.contains(event.target as Node)) {
        setShowNotifications(false)
      }
    }

    document.addEventListener('mousedown', handleClickOutside)
    return () => document.removeEventListener('mousedown', handleClickOutside)
  }, [])

  // 根据路径生成面包屑
  const generateBreadcrumbs = () => {
    const paths = pathname.split('/').filter(Boolean)

    const breadcrumbs = [
      {path: '/', label: '首页'},
      ...paths.map((path, index) => {
        const url = `/${paths.slice(0, index + 1).join('/')}`
        const label = getBreadcrumbLabel(path)
        return {path: url, label}
      }),
    ]

    return breadcrumbs
  }

  const getBreadcrumbLabel = (path: string) => {
    const labels: Record<string, string> = {
      'dashboard': '控制台',
      'content': '内容管理',
      'articles': '文章管理',
      'media': '媒体库',
      'users': '用户管理',
      'roles': '角色权限',
      'settings': '系统设置',
      'logs': '系统日志',
    }

    return labels[path] || path
  }

  const breadcrumbs = generateBreadcrumbs()
  const unreadCount = notifications.filter(n => !n.read).length

  return (
    <header className="bg-white h-16 border-b border-gray-200 flex items-center justify-between px-6">
      {/* 面包屑导航 */}
      <div className="flex items-center text-sm">
        {breadcrumbs.map((crumb, index) => (
          <div key={crumb.path} className="flex items-center">
            {index > 0 && (
              <svg className="mx-2 h-4 w-4 text-gray-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7"/>
              </svg>
            )}
            <Link
              href={crumb.path}
              className={index === breadcrumbs.length - 1
                ? 'text-gray-800 font-medium'
                : 'text-gray-500 hover:text-gray-700'
              }
            >
              {crumb.label}
            </Link>
          </div>
        ))}
      </div>

      {/* 右侧用户信息和工具栏 */}
      <div className="flex items-center space-x-4">
        {/* 搜索框 */}
        <div className="hidden md:block relative">
          <input
            type="text"
            placeholder="搜索..."
            className="pl-10 pr-4 py-2 bg-gray-100 border border-gray-200 rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent w-56"
          />
          <svg
            className="h-4 w-4 text-gray-400 absolute left-3 top-2.5" fill="none" viewBox="0 0 24 24"
            stroke="currentColor">
            <path
              strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
              d="M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z"/>
          </svg>
        </div>

        {/* 通知图标 */}
        <div className="relative" ref={notificationRef}>
          <button
            onClick={() => setShowNotifications(!showNotifications)}
            className="relative p-2 rounded-full text-gray-600 hover:bg-gray-100 hover:text-gray-800 transition-colors"
            aria-label="通知"
          >
            <svg className="h-6 w-6" fill="none" viewBox="0 0 24 24" stroke="currentColor">
              <path
                strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                d="M15 17h5l-1.405-1.405A2.032 2.032 0 0118 14.158V11a6.002 6.002 0 00-4-5.659V5a2 2 0 10-4 0v.341C7.67 6.165 6 8.388 6 11v3.159c0 .538-.214 1.055-.595 1.436L4 17h5m6 0v1a3 3 0 11-6 0v-1m6 0H9"
              />
            </svg>
            {unreadCount > 0 && (
              <span
                className="absolute top-1 right-1 h-4 w-4 text-xs flex items-center justify-center rounded-full bg-red-500 text-white">{unreadCount}</span>
            )}
          </button>

          {/* 通知下拉面板 */}
          {showNotifications && (
            <div className="absolute right-0 mt-2 w-80 bg-white rounded-md shadow-lg py-1 z-20 border border-gray-200">
              <div className="px-4 py-2 border-b border-gray-100 flex justify-between items-center">
                <h3 className="font-medium text-gray-800">通知</h3>
                <button className="text-xs text-blue-600 hover:text-blue-800">
                  全部标为已读
                </button>
              </div>

              <div className="max-h-72 overflow-y-auto">
                {notifications.length > 0 ? (
                  notifications.map((notification) => (
                    <div
                      key={notification.id}
                      className={`px-4 py-3 border-b border-gray-100 hover:bg-gray-50 ${
                        notification.read ? 'bg-white' : 'bg-blue-50'
                      }`}
                    >
                      <div className="flex justify-between items-start">
                        <h4 className="text-sm font-medium text-gray-800">{notification.title}</h4>
                        <span className="text-xs text-gray-500">{notification.time}</span>
                      </div>
                      <p className="text-xs text-gray-600 mt-1">{notification.content}</p>
                    </div>
                  ))
                ) : (
                  <div className="py-8 px-4 text-center">
                    <svg className="w-12 h-12 text-gray-300 mx-auto" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={1}
                            d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"
                      />
                    </svg>
                    <p className="mt-2 text-sm text-gray-500">暂无通知</p>
                  </div>
                )}
              </div>

              <div className="border-t border-gray-100 p-2 text-center">
                <Link href="/notifications" className="text-xs text-blue-600 hover:text-blue-800">
                  查看全部通知
                </Link>
              </div>
            </div>
          )}
        </div>

        {/* 分隔线 */}
        <div className="hidden md:block h-8 w-px bg-gray-200"></div>

        {/* 用户下拉菜单 */}
        <div className="relative" ref={dropdownRef}>
          <button
            onClick={() => setShowDropdown(!showDropdown)}
            className="flex items-center space-x-2 rounded-lg hover:bg-gray-100 p-2 transition-colors"
            aria-label="用户菜单"
          >
            <div
              className="h-8 w-8 rounded-full bg-blue-100 text-blue-800 flex items-center justify-center overflow-hidden border-2 border-white shadow-sm">
              <Image
                src={currentUser.avatar}
                alt="用户头像"
                width={32}
                height={32}
                onError={(e) => {
                  const target = e.target as HTMLImageElement
                  target.style.display = 'none'
                  target.parentElement!.innerHTML = currentUser.name.charAt(0)
                }}
              />
            </div>
            <div className="hidden md:block text-left">
              <p className="text-sm font-medium text-gray-800">{currentUser.name}</p>
              <p className="text-xs text-gray-500">{currentUser.role}</p>
            </div>
            <svg
              className="h-4 w-4 text-gray-400 hidden md:block" fill="none" viewBox="0 0 24 24" stroke="currentColor">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7"/>
            </svg>
          </button>

          {/* 用户下拉内容 */}
          {showDropdown && (
            <div className="absolute right-0 mt-2 w-56 bg-white rounded-lg shadow-lg py-2 z-20 border border-gray-200">
              <div className="px-4 py-2 border-b border-gray-100 md:hidden">
                <p className="font-medium text-gray-800">{currentUser.name}</p>
                <p className="text-xs text-gray-500">{currentUser.role}</p>
              </div>

              <div className="py-1">
                <Link href="/profile" className="flex items-center px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                  <svg className="mr-3 h-5 w-5 text-gray-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                    <path
                      strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                      d="M16 7a4 4 0 11-8 0 4 4 0 018 0zM12 14a7 7 0 00-7 7h14a7 7 0 00-7-7z"/>
                  </svg>
                  个人资料
                </Link>
                <Link
                  href="/settings/account"
                  className="flex items-center px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                  <svg className="mr-3 h-5 w-5 text-gray-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                    <path
                      strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                      d="M10.325 4.317c.426-1.756 2.924-1.756 3.35 0a1.724 1.724 0 002.573 1.066c1.543-.94 3.31.826 2.37 2.37a1.724 1.724 0 001.065 2.572c1.756.426 1.756 2.924 0 3.35a1.724 1.724 0 00-1.066 2.573c.94 1.543-.826 3.31-2.37 2.37a1.724 1.724 0 00-2.572 1.065c-.426 1.756-2.924 1.756-3.35 0a1.724 1.724 0 00-2.573-1.066c-1.543.94-3.31-.826-2.37-2.37a1.724 1.724 0 00-1.065-2.572c-1.756-.426-1.756-2.924 0-3.35a1.724 1.724 0 001.066-2.573c-.94-1.543.826-3.31 2.37-2.37.996.608 2.296.07 2.572-1.065z"/>
                    <path
                      strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                      d="M15 12a3 3 0 11-6 0 3 3 0 016 0z"/>
                  </svg>
                  账号设置
                </Link>
                <Link
                  href="/system/help" className="flex items-center px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                  <svg className="mr-3 h-5 w-5 text-gray-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                    <path
                      strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                      d="M8.228 9c.549-1.165 2.03-2 3.772-2 2.21 0 4 1.343 4 3 0 1.4-1.278 2.575-3.006 2.907-.542.104-.994.54-.994 1.093m0 3h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
                  </svg>
                  帮助中心
                </Link>
              </div>

              <div className="border-t border-gray-100 mt-1">
                <Link href="/login" className="flex items-center px-4 py-2 text-sm text-red-600 hover:bg-gray-100">
                  <svg className="mr-3 h-5 w-5 text-red-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                    <path
                      strokeLinecap="round" strokeLinejoin="round" strokeWidth={2}
                      d="M17 16l4-4m0 0l-4-4m4 4H7m6 4v1a3 3 0 01-3 3H6a3 3 0 01-3-3V7a3 3 0 013-3h4a3 3 0 013 3v1"/>
                  </svg>
                  退出登录
                </Link>
              </div>
            </div>
          )}
        </div>
      </div>
    </header>
  )
}