"use client";

import * as React from "react"
import { cn } from "@/lib/utils"
import Link from "next/link"
import { useState, useEffect } from "react"
import { usePathname } from "next/navigation"
import dynamic from 'next/dynamic'

interface HeaderProps {
  className?: string
  isLoggedIn?: boolean
  isAdmin?: boolean
}

const leftNavigation = [
  { name: 'Home', href: '/', current: false, requiresAuth: false },
  { name: 'Pricing', href: '/pricing', current: false, requiresAuth: false },
  { name: 'FAQ', href: '/faq', current: false, requiresAuth: false },
  { name: 'Dashboard', href: '/dashboard', current: false, requiresAuth: true },
  { name: 'Projects', href: '/projects', current: false, requiresAuth: true },
  { name: 'Calendar', href: '/calendar', current: false, requiresAuth: true },
  { name: 'Reports', href: '/reports', current: false, requiresAuth: true },
]

const rightNavigation = [
  { name: 'Sign-up', href: '/sign-up', current: false, requiresAuth: false },
  { name: 'Login', href: '/login', current: false, requiresAuth: false },
];

const ThemeToggle = dynamic(() => import('./theme-toggle').then(mod => mod.default), {
  ssr: false,
});

const ThemeToggleWrapper = () => {
  return (
    <div className="rounded-md px-3 py-2 text-sm font-medium transition-colors text-gray-300 hover:bg-gray-700 hover:text-white">
      <ThemeToggle />
    </div>
  );
};

export function Header({ className, isLoggedIn = false, isAdmin = false }: HeaderProps) {
  const [mobileMenuOpen, setMobileMenuOpen] = useState(false)
  const [profileOpen, setProfileOpen] = useState(false)
  const [activeNavItem, setActiveNavItem] = useState<string | null>(null)

  // Use usePathname for client-side navigation
  let pathname = usePathname()

  // Update activeNavItem when pathname changes
  useEffect(() => {
    if (pathname) {
      setActiveNavItem(pathname)
    }
  }, [pathname])

  // Only render the header after the pathname is available
  if (!pathname) {
    return null
  }

  return (
    <header className={cn("bg-gray-900 shadow-sm", className)}>
      <nav className="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
        <div className="flex h-16 items-center justify-between">
          <div className="flex items-center">
            <div className="flex-shrink-0">
              <Link href="/">
                <img
                  className="h-8 w-auto"
                  src="/logo.svg"
                  alt="Your Company"
                />
              </Link>
            </div>
            <div className="hidden md:block">
              <div className="ml-10 flex items-baseline space-x-4">
                {leftNavigation.map((item) => {
                  const isCurrent = activeNavItem === item.href
                  return (
                    (item.requiresAuth ? (isLoggedIn || isAdmin) : true) && (
                      <Link
                        key={item.name}
                        href={item.href}
                        className={cn(
                          isCurrent
                            ? 'bg-gray-800 text-white'
                            : 'text-gray-300 hover:bg-gray-700 hover:text-white',
                          'rounded-md px-3 py-2 text-sm font-medium transition-colors'
                        )}
                        aria-current={isCurrent ? 'page' : undefined}
                      >
                        {item.name}
                      </Link>
                    )
                  )
                })}
              </div>
            </div>
          </div>

          <div className="hidden md:block">
            <div className="ml-4 flex items-center md:ml-6">
              {!isLoggedIn && (
                <div className="hidden md:block">
                  <div className="ml-10 flex items-baseline space-x-4">
                    <div>
                      {rightNavigation.map((item) => (
                        <Link
                          key={item.name}
                          href={item.href}
                          className='rounded-md px-3 py-2 text-sm font-medium transition-colors text-gray-300 hover:bg-gray-700 hover:text-white'
                        >
                          {item.name}
                        </Link>
                      ))}
                    </div>
                    <ThemeToggleWrapper />
                  </div>
                </div>
              )}

              {isLoggedIn && (
                <div>
                  <button
                    type="button"
                    className="mx-4 relative rounded-full bg-gray-800 p-1 text-gray-400 hover:text-white focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-2 focus:ring-offset-gray-800"
                  >
                    <span className="absolute -inset-1.5" />
                    <span className="sr-only">View notifications</span>
                    <svg className="h-6 w-6" fill="none" viewBox="0 0 24 24" strokeWidth="1.5" stroke="currentColor">
                      <path strokeLinecap="round" strokeLinejoin="round" d="M14.857 17.082a23.848 23.848 0 005.454-1.31A8.967 8.967 0 0118 9.75v-.7V9A6 6 0 006 9v.75a8.967 8.967 0 01-2.312 6.022c1.733.64 3.56 1.085 5.455 1.31m5.714 0a24.255 24.255 0 01-5.714 0m5.714 0a3 3 0 11-5.714 0" />
                    </svg>
                  </button>

                  {/* Profile dropdown */}
                  <div className="relative ml-3">
                    <div>
                      <button
                        type="button"
                        className="relative flex max-w-xs items-center rounded-full bg-gray-800 text-sm focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-2 focus:ring-offset-gray-800"
                        onClick={() => setProfileOpen(!profileOpen)}
                      >
                        <span className="absolute -inset-1.5" />
                        <span className="sr-only">Open user menu</span>
                        <img
                          className="h-8 w-8 rounded-full"
                          src="https://images.unsplash.com/photo-1472099645785-5658abf4ff4e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80"
                          alt=""
                        />
                      </button>
                    </div>

                    {profileOpen && (
                      <div className="absolute right-0 z-10 mt-2 w-48 origin-top-right rounded-md bg-white py-1 shadow-lg ring-1 ring-black ring-opacity-5 focus:outline-none">
                        <Link href="/profile" className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                          Your Profile
                        </Link>
                        <Link href="/settings" className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                          Settings
                        </Link>
                        <Link href="/logout" className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100">
                          Sign out
                        </Link>
                      </div>
                    )}
                  </div>
                </div>
              )}
            </div>
          </div>

          <div className="-mr-2 flex md:hidden">
            {/* Mobile menu button */}
            <button
              type="button"
              className="relative inline-flex items-center justify-center rounded-md bg-gray-800 p-2 text-gray-400 hover:bg-gray-700 hover:text-white focus:outline-none focus:ring-2 focus:ring-inset focus:ring-white"
              onClick={() => setMobileMenuOpen(!mobileMenuOpen)}
            >
              <span className="absolute -inset-0.5" />
              <span className="sr-only">Open main menu</span>
              {mobileMenuOpen ? (
                <svg className="block h-6 w-6" fill="none" viewBox="0 0 24 24" strokeWidth="1.5" stroke="currentColor">
                  <path strokeLinecap="round" strokeLinejoin="round" d="M6 18L18 6M6 6l12 12" />
                </svg>
              ) : (
                <svg className="block h-6 w-6" fill="none" viewBox="0 0 24 24" strokeWidth="1.5" stroke="currentColor">
                  <path strokeLinecap="round" strokeLinejoin="round" d="M3.75 6.75h16.5M3.75 12h16.5m-16.5 5.25h16.5" />
                </svg>
              )}
            </button>
          </div>
        </div>
      </nav>

      {/* Mobile menu */}
      {mobileMenuOpen && (
        <div className="md:hidden">
          <div className="space-y-1 px-2 pb-3 pt-2 sm:px-3">
            {leftNavigation.map((item) => {
              const isCurrent = activeNavItem === item.href
              return (
                (item.requiresAuth ? (isLoggedIn || isAdmin) : true) && (
                  <Link
                    key={item.name}
                    href={item.href}
                    className={cn(
                      isCurrent
                        ? 'bg-gray-900 text-white'
                        : 'text-gray-300 hover:bg-gray-700 hover:text-white',
                      'block rounded-md px-3 py-2 text-base font-medium transition-colors'
                    )}
                    aria-current={isCurrent ? 'page' : undefined}
                  >
                    {item.name}
                  </Link>
                )
              )
            })}
          </div>
          {isLoggedIn && (
            <div className="border-t border-gray-700 pb-3 pt-4">
              <div>
                <div className="flex items-center px-5">
                  <div className="flex-shrink-0">
                    <img
                      className="h-10 w-10 rounded-full"
                      src="https://images.unsplash.com/photo-1472099645785-5658abf4ff4e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=facearea&facepad=2&w=256&h=256&q=80"
                      alt=""
                    />
                  </div>
                  <div className="ml-3">
                    <div className="text-base font-medium leading-none text-white">User Name</div>
                    <div className="text-sm font-medium leading-none text-gray-400">user@example.com</div>
                  </div>
                  <button
                    type="button"
                    className="relative ml-auto flex-shrink-0 rounded-full bg-gray-800 p-1 text-gray-400 hover:text-white focus:outline-none focus:ring-2 focus:ring-white focus:ring-offset-2 focus:ring-offset-gray-800"
                  >
                    <span className="absolute -inset-1.5" />
                    <span className="sr-only">View notifications</span>
                    <svg className="h-6 w-6" fill="none" viewBox="0 0 24 24" strokeWidth="1.5" stroke="currentColor">
                      <path strokeLinecap="round" strokeLinejoin="round" d="M14.857 17.082a23.848 23.848 0 005.454-1.31A8.967 8.967 0 0118 9.75v-.7V9A6 6 0 006 9v.75a8.967 8.967 0 01-2.312 6.022c1.733.64 3.56 1.085 5.455 1.31m5.714 0a24.255 24.255 0 01-5.714 0m5.714 0a3 3 0 11-5.714 0" />
                    </svg>
                  </button>
                </div>
                <div className="mt-3 space-y-1 px-2">
                  <Link href="/profile" className="block rounded-md px-3 py-2 text-base font-medium text-gray-400 hover:bg-gray-700 hover:text-white">
                    Your Profile
                  </Link>
                  <Link href="/settings" className="block rounded-md px-3 py-2 text-base font-medium text-gray-400 hover:bg-gray-700 hover:text-white">
                    Settings
                  </Link>
                  <Link href="/logout" className="block rounded-md px-3 py-2 text-base font-medium text-gray-400 hover:bg-gray-700 hover:text-white">
                    Sign out
                  </Link>
                </div>
              </div>
            </div>
          )}

        </div>
      )}
    </header>
  )
}