"use client"

import type React from "react"
import { useState, useEffect } from "react"
import Link from "next/link"
import { usePathname, useRouter } from "next/navigation"
import { LayoutDashboard, FileText, Users, CreditCard, Settings, LogOut, Wallet, Globe, BookOpen, Banknote } from "lucide-react"

export default function AdminLayout({ children }: { children: React.ReactNode }) {
  const pathname = usePathname()
  const router = useRouter()
  const [mounted, setMounted] = useState(false)
  const [authChecked, setAuthChecked] = useState(false)

  useEffect(() => {
    setMounted(true)
  }, [])

  // 非登录页时校验 Cookie，未登录则跳转登录页
  useEffect(() => {
    if (!mounted || pathname === "/admin/login") return
    setAuthChecked(false)
    let cancelled = false
    fetch("/api/admin", { credentials: "include" })
      .then((res) => {
        if (cancelled) return
        if (res.status === 401) router.replace("/admin/login")
        else setAuthChecked(true)
      })
      .catch(() => {
        if (!cancelled) setAuthChecked(true)
      })
    return () => {
      cancelled = true
    }
  }, [mounted, pathname, router])

  const handleLogout = async () => {
    await fetch("/api/admin/logout", { method: "POST", credentials: "include" })
    router.replace("/admin/login")
  }

  // 简化菜单：按功能归类，保留核心功能
  // PDF需求：分账管理、分销管理、订单管理三合一 → 交易中心
  const menuItems = [
    { icon: LayoutDashboard, label: "数据概览", href: "/admin" },
    { icon: BookOpen, label: "内容管理", href: "/admin/content" },
    { icon: Users, label: "用户管理", href: "/admin/users" },
    { icon: Wallet, label: "交易中心", href: "/admin/distribution" }, // 合并：分销+订单+提现
    { icon: CreditCard, label: "推广设置", href: "/admin/referral-settings" },
    { icon: Banknote, label: "支付配置", href: "/admin/payment" },
    { icon: Settings, label: "系统设置", href: "/admin/settings" },
  ]

  // 登录页：不渲染侧栏，只渲染子页面
  if (pathname === "/admin/login") {
    return <div className="min-h-screen bg-[#0a1628]">{children}</div>
  }

  // 避免 hydration 错误，等待客户端 mount 并完成鉴权
  if (!mounted || !authChecked) {
    return (
      <div className="flex min-h-screen bg-[#0a1628]">
        <div className="w-64 bg-[#0f2137] border-r border-gray-700/50" />
        <div className="flex-1 flex items-center justify-center">
          <div className="text-[#38bdac]">加载中...</div>
        </div>
      </div>
    )
  }

  return (
    <div className="flex min-h-screen bg-[#0a1628]">
      {/* Sidebar - 深色侧边栏 */}
      <div className="w-64 bg-[#0f2137] flex flex-col border-r border-gray-700/50 shadow-xl">
        <div className="p-6 border-b border-gray-700/50">
          <h1 className="text-xl font-bold text-[#38bdac]">管理后台</h1>
          <p className="text-xs text-gray-400 mt-1">Soul创业派对</p>
        </div>

        <nav className="flex-1 p-4 space-y-1">
          {menuItems.map((item) => {
            const isActive = pathname === item.href
            return (
              <Link
                key={item.href}
                href={item.href}
                className={`flex items-center gap-3 px-4 py-3 rounded-lg transition-colors ${
                  isActive
                    ? "bg-[#38bdac]/20 text-[#38bdac] font-medium"
                    : "text-gray-400 hover:bg-gray-700/50 hover:text-white"
                }`}
              >
                <item.icon className="w-5 h-5" />
                <span className="text-sm">{item.label}</span>
              </Link>
            )
          })}
        </nav>

        <div className="p-4 border-t border-gray-700/50 space-y-1">
          <button
            type="button"
            onClick={handleLogout}
            className="w-full flex items-center gap-3 px-4 py-3 text-gray-400 hover:text-white rounded-lg hover:bg-gray-700/50 transition-colors"
          >
            <LogOut className="w-5 h-5" />
            <span className="text-sm">退出登录</span>
          </button>
          <Link
            href="/view"
            className="flex items-center gap-3 px-4 py-3 text-gray-400 hover:text-white rounded-lg hover:bg-gray-700/50 transition-colors"
          >
            <span className="text-sm">返回前台</span>
          </Link>
        </div>
      </div>

      {/* Main Content - 深色背景 */}
      <div className="flex-1 overflow-auto bg-[#0a1628]">{children}</div>
    </div>
  )
}