'use client';

import { useEffect, useState } from 'react';
import { useRouter, usePathname } from 'next/navigation';
import Link from 'next/link';
import { useAuthStore } from '@/lib/store';

const menuItems = [
  { href: '/admin', label: 'Dashboard', icon: '📊' },
  { href: '/admin/visitor-stats', label: 'Visitor Stats', icon: '👁️' },
  { href: '/admin/hero-banners', label: 'Hero Banners', icon: '🖼️' },
  { href: '/admin/cars', label: 'Cars', icon: '🚗' },
  { href: '/admin/vehicle-requests', label: 'Vehicle Requests', icon: '📋' },
  { href: '/admin/purchased', label: 'Purchased Vehicles', icon: '📦' },
  { href: '/admin/dealers', label: 'Dealers', icon: '🤝' },
  { href: '/admin/payments', label: 'Payments', icon: '💳' },
  { href: '/admin/withdrawals', label: 'Withdrawals', icon: '💸' },
  { href: '/admin/notifications', label: 'Notifications', icon: '🔔' },
  { href: '/admin/translations', label: 'Translations', icon: '🌐' },
  { href: '/admin/dealer-translations', label: 'Dealer Descriptions', icon: '📝' },
  { href: '/admin/users', label: 'Users', icon: '👥' },
  { href: '/admin/inquiries', label: 'Inquiries', icon: '💬' },
  { href: '/admin/settings', label: 'Settings', icon: '⚙️' },
];

export default function AdminLayout({
  children,
}: {
  children: React.ReactNode;
}) {
  const router = useRouter();
  const pathname = usePathname();
  const { user, token, logout, isLoading: authLoading } = useAuthStore();
  const [sidebarOpen, setSidebarOpen] = useState(true);

  // 디버그 로그
  useEffect(() => {
    console.log('Admin Layout Debug:', {
      pathname,
      token: token ? 'exists' : 'null',
      user: user ? { id: user.id, email: user.email, is_admin: user.is_admin } : null,
      authLoading
    });
  }, [pathname, token, user, authLoading]);

  useEffect(() => {
    // 로그인 페이지는 체크 필요 없음
    if (pathname === '/admin/login') {
      return;
    }

    // 아직 로딩 중이면 대기
    if (authLoading) {
      return;
    }

    // 토큰이 없으면 로그인 페이지로
    if (!token) {
      router.push('/admin/login');
      return;
    }

    // user 정보가 없으면 로그인 페이지로
    if (!user) {
      router.push('/admin/login');
      return;
    }

    // 관리자가 아니면 홈으로
    if (!user.is_admin) {
      console.log('User is not admin, redirecting to home');
      router.push('/');
      return;
    }
  }, [pathname, router, token, user, authLoading]);

  const handleLogout = () => {
    logout();
    router.push('/admin/login');
  };

  // 로그인 페이지는 레이아웃 없이 렌더링
  if (pathname === '/admin/login') {
    return <>{children}</>;
  }

  // 로딩 중
  if (authLoading) {
    return (
      <div className="min-h-screen flex items-center justify-center bg-gray-100">
        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-primary-600"></div>
      </div>
    );
  }

  // 토큰 없음 또는 유저 없음 또는 관리자 아님 -> 빈 화면 (리다이렉트 될 예정)
  if (!token || !user || !user.is_admin) {
    return (
      <div className="min-h-screen flex items-center justify-center bg-gray-100">
        <div className="animate-spin rounded-full h-12 w-12 border-b-2 border-primary-600"></div>
      </div>
    );
  }

  return (
    <div className="min-h-screen bg-gray-100 flex">
      {/* Sidebar */}
      <aside
        className={`${
          sidebarOpen ? 'w-64' : 'w-20'
        } bg-gray-900 text-white transition-all duration-300 flex flex-col`}
      >
        {/* Logo */}
        <div className="p-4 border-b border-gray-800">
          <Link href="/admin" className="flex items-center gap-3">
            <span className="text-2xl">🚗</span>
            {sidebarOpen && (
              <span className="font-bold text-lg">AutonetSellCar</span>
            )}
          </Link>
        </div>

        {/* Navigation */}
        <nav className="flex-1 py-4">
          {menuItems.map((item) => {
            const isActive = pathname === item.href ||
              (item.href !== '/admin' && pathname.startsWith(item.href));

            return (
              <Link
                key={item.href}
                href={item.href}
                className={`flex items-center gap-3 px-4 py-3 transition-colors ${
                  isActive
                    ? 'bg-primary-600 text-white'
                    : 'text-gray-300 hover:bg-gray-800 hover:text-white'
                }`}
              >
                <span className="text-xl">{item.icon}</span>
                {sidebarOpen && <span>{item.label}</span>}
              </Link>
            );
          })}
        </nav>

        {/* Footer */}
        <div className="p-4 border-t border-gray-800">
          <button
            onClick={handleLogout}
            className="flex items-center gap-3 text-gray-300 hover:text-white transition-colors w-full"
          >
            <span className="text-xl">🚪</span>
            {sidebarOpen && <span>Logout</span>}
          </button>
        </div>
      </aside>

      {/* Main Content */}
      <div className="flex-1 flex flex-col">
        {/* Top Bar */}
        <header className="bg-white shadow-sm h-16 flex items-center justify-between px-6">
          <button
            onClick={() => setSidebarOpen(!sidebarOpen)}
            className="p-2 rounded-lg hover:bg-gray-100 transition-colors"
          >
            <svg className="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M4 6h16M4 12h16M4 18h16" />
            </svg>
          </button>

          <div className="flex items-center gap-4">
            <Link
              href="/"
              target="_blank"
              className="text-sm text-gray-600 hover:text-primary-600 flex items-center gap-1"
            >
              <span>View Site</span>
              <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M10 6H6a2 2 0 00-2 2v10a2 2 0 002 2h10a2 2 0 002-2v-4M14 4h6m0 0v6m0-6L10 14" />
              </svg>
            </Link>
            <div className="w-8 h-8 rounded-full bg-primary-600 text-white flex items-center justify-center font-bold">
              {user?.name?.charAt(0).toUpperCase() || user?.email?.charAt(0).toUpperCase() || 'A'}
            </div>
          </div>
        </header>

        {/* Page Content */}
        <main className="flex-1 p-6 overflow-auto">
          {children}
        </main>
      </div>
    </div>
  );
}
