import { useState, useEffect } from 'react'
import { useNavigate } from 'react-router-dom'
import { X, ArrowRight, Home, Users, Calculator, CalendarCheck, ShieldAlert, Bot } from 'lucide-react'

const STORAGE_KEY = 'hr-onboarding-dismissed'

const modules = [
  {
    icon: Home,
    color: 'text-blue-600',
    bg: 'bg-blue-50',
    title: '工作台',
    desc: '风险总览、待办事项、日历事件',
    path: '/',
  },
  {
    icon: Users,
    color: 'text-indigo-600',
    bg: 'bg-indigo-50',
    title: '团队管理',
    desc: '花名册、用工办理、离职管理、特殊状态',
    path: '/roster',
  },
  {
    icon: Calculator,
    color: 'text-amber-600',
    bg: 'bg-amber-50',
    title: '薪酬管理',
    desc: '发薪批次、工资条、社保公积金、薪酬分析',
    path: '/money',
  },
  {
    icon: CalendarCheck,
    color: 'text-green-600',
    bg: 'bg-green-50',
    title: '考勤时间',
    desc: '考勤打卡、排班管理、休假审批',
    path: '/attendance',
  },
  {
    icon: ShieldAlert,
    color: 'text-red-600',
    bg: 'bg-red-50',
    title: '合规风控',
    desc: '风险中心、证据链、规章制度、用工体检',
    path: '/risk-center',
  },
  {
    icon: Bot,
    color: 'text-purple-600',
    bg: 'bg-purple-50',
    title: 'AI 助手',
    desc: '智能咨询、合同审查、判赔预测、人力分析',
    path: '/ai-assistant',
  },
]

export function isOnboardingDismissed() {
  return localStorage.getItem(STORAGE_KEY) === '1'
}

export function dismissOnboarding() {
  localStorage.setItem(STORAGE_KEY, '1')
}

export function resetOnboarding() {
  localStorage.removeItem(STORAGE_KEY)
}

export default function OnboardingGuide() {
  const [visible, setVisible] = useState(false)
  const [dontShow, setDontShow] = useState(false)
  const navigate = useNavigate()

  useEffect(() => {
    if (!isOnboardingDismissed()) {
      setVisible(true)
    }
  }, [])

  const close = () => {
    if (dontShow) dismissOnboarding()
    setVisible(false)
  }

  const goTo = (path: string) => {
    if (dontShow) dismissOnboarding()
    setVisible(false)
    navigate(path)
  }

  if (!visible) return null

  return (
    <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40">
      <div className="bg-white rounded-xl shadow-xl max-w-lg w-full mx-4 overflow-hidden">
        <div className="flex items-center justify-between px-5 py-3 border-b border-gray-100">
          <h2 className="text-base font-semibold">欢迎使用企业用工专家</h2>
          <button onClick={close} className="text-gray-400 hover:text-gray-600">
            <X className="w-5 h-5" />
          </button>
        </div>
        <div className="px-5 py-4">
          <p className="text-sm text-gray-500 mb-4">系统包含以下 6 大模块，点击任意模块可直接前往体验：</p>
          <div className="grid grid-cols-2 gap-3">
            {modules.map((m) => {
              const Icon = m.icon
              return (
                <button
                  key={m.title}
                  onClick={() => goTo(m.path)}
                  className="flex items-start gap-3 p-3 rounded-lg border border-gray-100 hover:border-primary/30 hover:bg-primary/[0.02] transition-all text-left"
                >
                  <div className={`flex items-center justify-center w-9 h-9 rounded-lg ${m.bg} ${m.color} shrink-0`}>
                    <Icon className="w-4.5 h-4.5" />
                  </div>
                  <div className="flex-1 min-w-0">
                    <div className="text-sm font-medium text-gray-800">{m.title}</div>
                    <div className="text-xs text-gray-500 mt-0.5 leading-relaxed">{m.desc}</div>
                  </div>
                </button>
              )
            })}
          </div>

          <div className="mt-4 flex items-center justify-between">
            <label className="flex items-center gap-2 text-sm text-gray-500 cursor-pointer">
              <input
                type="checkbox"
                checked={dontShow}
                onChange={(e) => setDontShow(e.target.checked)}
                className="w-4 h-4 rounded border-gray-300 text-primary focus:ring-primary/10"
              />
              不再自动显示
            </label>
            <button
              onClick={close}
              className="flex items-center gap-1 px-4 py-2 text-sm font-medium text-white bg-primary rounded-lg hover:bg-primary/90 transition-colors"
            >
              开始使用
              <ArrowRight className="w-4 h-4" />
            </button>
          </div>
        </div>
      </div>
    </div>
  )
}