import { Navigate, NavLink, Outlet, useLocation, useNavigate } from 'react-router-dom'
import { Avatar, Button, Separator } from '@heroui/react'
import { House, Rocket, Gear, FileText } from '@gravity-ui/icons'
import { useAuth } from '../auth/auth'

interface NavItem { id: string; label: string; description: string; icon: any }

export function AppLayout() {
  const { token, username, logout } = useAuth()
  const navigate = useNavigate()
  const location = useLocation()

  const navItems: NavItem[] = [
    { id: 'home', label: '首页', description: '主机与服务状态', icon: House },
    { id: 'plugins', label: '插件管理', description: '插件总览与分群控制', icon: Rocket },
    { id: 'logs', label: '查看日志', description: 'bot 运行日志实时查看', icon: FileText },
    { id: 'settings', label: '设置', description: '账号与系统设置', icon: Gear },
  ]
  const path = location.pathname.replace(/\/+$/, '') || '/'
  const isHome = path === '/hub'
  const isSettings = path.startsWith('/hub/settings')
  const isLogs = path.startsWith('/hub/logs')
  const isPluginList = path.startsWith('/hub/plugins')
  const isPlugins = isPluginList || (!isHome && !isSettings && !isLogs && path.startsWith('/hub/'))
  const isPluginSub = isPlugins && !isPluginList
  const activeId = isPlugins ? 'plugins' : isLogs ? 'logs' : isSettings ? 'settings' : 'home'
  const pageMeta = navItems.find(it => it.id === activeId) || navItems[0]

  if (!token) return <Navigate to="/hub/login" replace />

  return (
    <div className="flex h-screen w-screen overflow-hidden bg-slate-50 text-slate-900">
      <aside className="flex h-full w-60 shrink-0 flex-col overflow-hidden bg-white border-r border-slate-200">
        {/* 品牌头 */}
        <div className="flex h-16 shrink-0 items-center px-4">
          <div className="grid size-9 place-items-center rounded-xl bg-indigo-100 text-indigo-600"><Gear className="size-5" /></div>
          <div className="ml-3 min-w-0 flex-1">
            <div className="truncate text-sm font-bold">HeXi 管理系统</div>
            <div className="truncate text-xs text-slate-400">统一管理台</div>
          </div>
        </div>

        {/* 导航 */}
        <nav className="flex-1 min-h-0 space-y-1 overflow-y-auto px-2 py-2">
          {navItems.filter(it => it.id !== 'settings').map(it => {
            const to = it.id === 'home' ? '/hub' : '/hub/' + it.id
            return (
              <NavLink
                key={it.id}
                to={to}
                end={it.id === 'home'}
                className={({ isActive }) => {
                  const base = 'group relative flex items-center rounded-lg py-2.5 text-sm font-medium transition-colors cursor-pointer'
                  return base + (isActive ? ' bg-indigo-50 text-indigo-700' : ' text-slate-600 hover:bg-slate-100 hover:text-slate-800')
                }}
              >
                {({ isActive }) => (
                  <>
                    {isActive && <span className="absolute left-0 top-1/2 h-5 w-0.5 -translate-y-1/2 rounded-full bg-indigo-500" />}
                    <span className="relative z-10 grid w-11 shrink-0 place-items-center"><it.icon className="size-4" /></span>
                    <span className="relative z-10 flex min-w-0 flex-1 flex-col items-start overflow-hidden pr-3">
                      <span className="w-full truncate leading-tight">{it.label}</span>
                      <span className="w-full truncate text-xs font-normal text-slate-400">{it.description}</span>
                    </span>
                  </>
                )}
              </NavLink>
            )
          })}
        </nav>

        {/* 底部设置 */}
        <nav className="shrink-0 space-y-1 border-t border-slate-100 px-2 py-2">
          {navItems.filter(it => it.id === 'settings').map(it => {
            const to = '/hub/' + it.id
            return (
              <NavLink
                key={it.id}
                to={to}
                className={({ isActive }) => {
                  const base = 'group relative flex items-center rounded-lg py-2.5 text-sm font-medium transition-colors cursor-pointer'
                  return base + (isActive ? ' bg-indigo-50 text-indigo-700' : ' text-slate-600 hover:bg-slate-100 hover:text-slate-800')
                }}
              >
                {({ isActive }) => (
                  <>
                    {isActive && <span className="absolute left-0 top-1/2 h-5 w-0.5 -translate-y-1/2 rounded-full bg-indigo-500" />}
                    <span className="relative z-10 grid w-11 shrink-0 place-items-center"><it.icon className="size-4" /></span>
                    <span className="relative z-10 flex min-w-0 flex-1 flex-col items-start overflow-hidden pr-3">
                      <span className="w-full truncate leading-tight">{it.label}</span>
                      <span className="w-full truncate text-xs font-normal text-slate-400">{it.description}</span>
                    </span>
                  </>
                )}
              </NavLink>
            )
          })}
        </nav>
      </aside>

      <div className="flex min-h-0 min-w-0 flex-1 flex-col overflow-hidden">
        <header className="flex h-16 shrink-0 items-center justify-between border-b border-slate-200 bg-white px-6">
          <div className="flex items-center gap-3">
            {isPluginSub && (
              <Button size="sm" variant="tertiary" onPress={() => navigate('/hub/plugins')}>← 返回插件管理</Button>
            )}
            <pageMeta.icon className="size-4 text-slate-500" />
            <span className="text-sm font-semibold text-slate-800">{pageMeta.label}</span>
          </div>
          <div className="flex items-center gap-3">
            <Avatar size="sm"><Avatar.Fallback>{(username || 'U').charAt(0).toUpperCase()}</Avatar.Fallback></Avatar>
            <span className="text-sm text-slate-600">{username || '未登录'}</span>
            <Separator orientation="vertical" className="h-5" />
            <Button size="sm" variant="tertiary" onPress={() => { logout(); navigate('/hub/login') }}>退出</Button>
          </div>
        </header>
        <main className="min-h-0 flex-1 overflow-y-auto p-6"><Outlet /></main>
      </div>
    </div>
  )
}