/*
  This example requires Tailwind CSS v2.0+ 
  
  This example requires some changes to your config:
  
  ```
  // tailwind.config.js
  module.exports = {
    // ...
    plugins: [
      // ...
      require('@tailwindcss/forms'),
    ],
  }
  ```
*/
import { Fragment, useState } from 'react'
import { Dialog, Popover, Tab, Transition } from '@headlessui/react'
import { Bars3Icon, MagnifyingGlassIcon, ShoppingCartIcon, UserIcon, XMarkIcon } from '@heroicons/react/24/outline'
import { ChevronDownIcon } from '@heroicons/react/20/solid'

const currencies = ['CAD', 'USD', 'AUD', 'EUR', 'GBP']
const navigation = {
  categories: [
    {
      name: 'Women',
      featured: [
        { name: 'Sleep', href: '#' },
        { name: 'Swimwear', href: '#' },
        { name: 'Underwear', href: '#' },
      ],
      collection: [
        { name: 'Everything', href: '#' },
        { name: 'Core', href: '#' },
        { name: 'New Arrivals', href: '#' },
        { name: 'Sale', href: '#' },
      ],
      categories: [
        { name: 'Basic Tees', href: '#' },
        { name: 'Artwork Tees', href: '#' },
        { name: 'Bottoms', href: '#' },
        { name: 'Underwear', href: '#' },
        { name: 'Accessories', href: '#' },
      ],
      brands: [
        { name: 'Full Nelson', href: '#' },
        { name: 'My Way', href: '#' },
        { name: 'Re-Arranged', href: '#' },
        { name: 'Counterfeit', href: '#' },
        { name: 'Significant Other', href: '#' },
      ],
    },
    {
      name: 'Men',
      featured: [
        { name: 'Casual', href: '#' },
        { name: 'Boxers', href: '#' },
        { name: 'Outdoor', href: '#' },
      ],
      collection: [
        { name: 'Everything', href: '#' },
        { name: 'Core', href: '#' },
        { name: 'New Arrivals', href: '#' },
        { name: 'Sale', href: '#' },
      ],
      categories: [
        { name: 'Artwork Tees', href: '#' },
        { name: 'Pants', href: '#' },
        { name: 'Accessories', href: '#' },
        { name: 'Boxers', href: '#' },
        { name: 'Basic Tees', href: '#' },
      ],
      brands: [
        { name: 'Significant Other', href: '#' },
        { name: 'My Way', href: '#' },
        { name: 'Counterfeit', href: '#' },
        { name: 'Re-Arranged', href: '#' },
        { name: 'Full Nelson', href: '#' },
      ],
    },
  ],
  pages: [
    { name: 'Company', href: '#' },
    { name: 'Stores', href: '#' },
  ],
}

function classNames(...classes) {
  return classes.filter(Boolean).join(' ')
}

export default function Example() {
  const [open, setOpen] = useState(false)

  return (
    <div className="bg-white">
      {/* Mobile menu */}
      <Transition.Root show={open} as={Fragment}>
        <Dialog as="div" className="relative z-40 lg:hidden" onClose={setOpen}>
          <Transition.Child
            as={Fragment}
            enter="transition-opacity ease-linear duration-300"
            enterFrom="opacity-0"
            enterTo="opacity-100"
            leave="transition-opacity ease-linear duration-300"
            leaveFrom="opacity-100"
            leaveTo="opacity-0"
          >
            <div className="fixed inset-0 bg-black bg-opacity-25" />
          </Transition.Child>

          <div className="fixed inset-0 z-40 flex">
            <Transition.Child
              as={Fragment}
              enter="transition ease-in-out duration-300 transform"
              enterFrom="-translate-x-full"
              enterTo="translate-x-0"
              leave="transition ease-in-out duration-300 transform"
              leaveFrom="translate-x-0"
              leaveTo="-translate-x-full"
            >
              <Dialog.Panel className="relative flex w-full max-w-xs flex-col overflow-y-auto bg-white pb-12 shadow-xl">
                <div className="flex px-4 pt-5 pb-2">
                  <button
                    type="button"
                    className="-m-2 inline-flex items-center justify-center rounded-md p-2 text-gray-400"
                    onClick={() => setOpen(false)}
                  >
                    <span className="sr-only">Close menu</span>
                    <XMarkIcon className="h-6 w-6" aria-hidden="true" />
                  </button>
                </div>

                {/* Links */}
                <Tab.Group as="div" className="mt-2">
                  <div className="border-b border-gray-200">
                    <Tab.List className="-mb-px flex space-x-8 px-4">
                      {navigation.categories.map((category) => (
                        <Tab
                          key={category.name}
                          className={({ selected }) =>
                            classNames(
                              selected ? 'text-indigo-600 border-indigo-600' : 'text-gray-900 border-transparent',
                              'flex-1 whitespace-nowrap border-b-2 py-4 px-1 text-base font-medium'
                            )
                          }
                        >
                          {category.name}
                        </Tab>
                      ))}
                    </Tab.List>
                  </div>
                  <Tab.Panels as={Fragment}>
                    {navigation.categories.map((category, categoryIdx) => (
                      <Tab.Panel key={category.name} className="space-y-12 px-4 pt-10 pb-6">
                        <div className="grid grid-cols-1 items-start gap-y-10 gap-x-6">
                          <div className="grid grid-cols-1 gap-y-10 gap-x-6">
                            <div>
                              <p id={`mobile-featured-heading-${categoryIdx}`} className="font-medium text-gray-900">
                                Featured
                              </p>
                              <ul
                                role="list"
                                aria-labelledby={`mobile-featured-heading-${categoryIdx}`}
                                className="mt-6 space-y-6"
                              >
                                {category.featured.map((item) => (
                                  <li key={item.name} className="flex">
                                    <a href={item.href} className="text-gray-500">
                                      {item.name}
                                    </a>
                                  </li>
                                ))}
                              </ul>
                            </div>
                            <div>
                              <p id="mobile-categories-heading" className="font-medium text-gray-900">
                                Categories
                              </p>
                              <ul role="list" aria-labelledby="mobile-categories-heading" className="mt-6 space-y-6">
                                {category.categories.map((item) => (
                                  <li key={item.name} className="flex">
                                    <a href={item.href} className="text-gray-500">
                                      {item.name}
                                    </a>
                                  </li>
                                ))}
                              </ul>
                            </div>
                          </div>
                          <div className="grid grid-cols-1 gap-y-10 gap-x-6">
                            <div>
                              <p id="mobile-collection-heading" className="font-medium text-gray-900">
                                Collection
                              </p>
                              <ul role="list" aria-labelledby="mobile-collection-heading" className="mt-6 space-y-6">
                                {category.collection.map((item) => (
                                  <li key={item.name} className="flex">
                                    <a href={item.href} className="text-gray-500">
                                      {item.name}
                                    </a>
                                  </li>
                                ))}
                              </ul>
                            </div>

                            <div>
                              <p id="mobile-brand-heading" className="font-medium text-gray-900">
                                Brands
                              </p>
                              <ul role="list" aria-labelledby="mobile-brand-heading" className="mt-6 space-y-6">
                                {category.brands.map((item) => (
                                  <li key={item.name} className="flex">
                                    <a href={item.href} className="text-gray-500">
                                      {item.name}
                                    </a>
                                  </li>
                                ))}
                              </ul>
                            </div>
                          </div>
                        </div>
                      </Tab.Panel>
                    ))}
                  </Tab.Panels>
                </Tab.Group>

                <div className="space-y-6 border-t border-gray-200 py-6 px-4">
                  {navigation.pages.map((page) => (
                    <div key={page.name} className="flow-root">
                      <a href={page.href} className="-m-2 block p-2 font-medium text-gray-900">
                        {page.name}
                      </a>
                    </div>
                  ))}
                </div>

                <div className="space-y-6 border-t border-gray-200 py-6 px-4">
                  <div className="flow-root">
                    <a href="#" className="-m-2 block p-2 font-medium text-gray-900">
                      Create an account
                    </a>
                  </div>
                  <div className="flow-root">
                    <a href="#" className="-m-2 block p-2 font-medium text-gray-900">
                      Sign in
                    </a>
                  </div>
                </div>

                <div className="space-y-6 border-t border-gray-200 py-6 px-4">
                  {/* Currency selector */}
                  <form>
                    <div className="inline-block">
                      <label htmlFor="mobile-currency" className="sr-only">
                        Currency
                      </label>
                      <div className="group relative -ml-2 rounded-md border-transparent focus-within:ring-2 focus-within:ring-white">
                        <select
                          id="mobile-currency"
                          name="currency"
                          className="flex items-center rounded-md border-transparent bg-none py-0.5 pl-2 pr-5 text-sm font-medium text-gray-700 focus:border-transparent focus:outline-none focus:ring-0 group-hover:text-gray-800"
                        >
                          {currencies.map((currency) => (
                            <option key={currency}>{currency}</option>
                          ))}
                        </select>
                        <div className="pointer-events-none absolute inset-y-0 right-0 flex items-center">
                          <ChevronDownIcon className="h-5 w-5 text-gray-500" aria-hidden="true" />
                        </div>
                      </div>
                    </div>
                  </form>
                </div>
              </Dialog.Panel>
            </Transition.Child>
          </div>
        </Dialog>
      </Transition.Root>

      <header className="relative">
        <nav aria-label="Top">
          {/* Top navigation */}
          <div className="bg-gray-900">
            <div className="mx-auto flex h-10 max-w-7xl items-center justify-between px-4 sm:px-6 lg:px-8">
              {/* Currency selector */}
              <form className="hidden lg:block lg:flex-1">
                <div className="flex">
                  <label htmlFor="desktop-currency" className="sr-only">
                    Currency
                  </label>
                  <div className="group relative -ml-2 rounded-md border-transparent bg-gray-900 focus-within:ring-2 focus-within:ring-white">
                    <select
                      id="desktop-currency"
                      name="currency"
                      className="flex items-center rounded-md border-transparent bg-gray-900 bg-none py-0.5 pl-2 pr-5 text-sm font-medium text-white focus:border-transparent focus:outline-none focus:ring-0 group-hover:text-gray-100"
                    >
                      {currencies.map((currency) => (
                        <option key={currency}>{currency}</option>
                      ))}
                    </select>
                    <div className="pointer-events-none absolute inset-y-0 right-0 flex items-center">
                      <ChevronDownIcon className="h-5 w-5 text-gray-300" aria-hidden="true" />
                    </div>
                  </div>
                </div>
              </form>

              <p className="flex-1 text-center text-sm font-medium text-white lg:flex-none">
                Get free delivery on orders over $100
              </p>

              <div className="hidden lg:flex lg:flex-1 lg:items-center lg:justify-end lg:space-x-6">
                <a href="#" className="text-sm font-medium text-white hover:text-gray-100">
                  Create an account
                </a>
                <span className="h-6 w-px bg-gray-600" aria-hidden="true" />
                <a href="#" className="text-sm font-medium text-white hover:text-gray-100">
                  Sign in
                </a>
              </div>
            </div>
          </div>

          {/* Secondary navigation */}
          <div className="bg-white">
            <div className="mx-auto max-w-7xl px-4 sm:px-6 lg:px-8">
              <div className="border-b border-gray-200">
                <div className="flex h-16 items-center justify-between">
                  {/* Logo (lg+) */}
                  <div className="hidden lg:flex lg:items-center">
                    <a href="#">
                      <span className="sr-only">Your Company</span>
                      <img
                        className="h-8 w-auto"
                        src="https://tailwindui.com/img/logos/mark.svg?color=indigo&shade=600"
                        alt=""
                      />
                    </a>
                  </div>

                  <div className="hidden h-full lg:flex">
                    {/* Mega menus */}
                    <Popover.Group className="ml-8">
                      <div className="flex h-full justify-center space-x-8">
                        {navigation.categories.map((category, categoryIdx) => (
                          <Popover key={category.name} className="flex">
                            {({ open }) => (
                              <>
                                <div className="relative flex">
                                  <Popover.Button
                                    className={classNames(
                                      open
                                        ? 'border-indigo-600 text-indigo-600'
                                        : 'border-transparent text-gray-700 hover:text-gray-800',
                                      'relative z-10 -mb-px flex items-center border-b-2 pt-px text-sm font-medium transition-colors duration-200 ease-out'
                                    )}
                                  >
                                    {category.name}
                                  </Popover.Button>
                                </div>

                                <Transition
                                  as={Fragment}
                                  enter="transition ease-out duration-200"
                                  enterFrom="opacity-0"
                                  enterTo="opacity-100"
                                  leave="transition ease-in duration-150"
                                  leaveFrom="opacity-100"
                                  leaveTo="opacity-0"
                                >
                                  <Popover.Panel className="absolute inset-x-0 top-full text-gray-500 sm:text-sm">
                                    {/* Presentational element used to render the bottom shadow, if we put the shadow on the actual panel it pokes out the top, so we use this shorter element to hide the top of the shadow */}
                                    <div className="absolute inset-0 top-1/2 bg-white shadow" aria-hidden="true" />

                                    <div className="relative bg-white">
                                      <div className="mx-auto max-w-7xl px-8">
                                        <div className="grid grid-cols-2 items-start gap-y-10 gap-x-8 pt-10 pb-12">
                                          <div className="grid grid-cols-2 gap-y-10 gap-x-8">
                                            <div>
                                              <p
                                                id={`desktop-featured-heading-${categoryIdx}`}
                                                className="font-medium text-gray-900"
                                              >
                                                Featured
                                              </p>
                                              <ul
                                                role="list"
                                                aria-labelledby={`desktop-featured-heading-${categoryIdx}`}
                                                className="mt-6 space-y-6 sm:mt-4 sm:space-y-4"
                                              >
                                                {category.featured.map((item) => (
                                                  <li key={item.name} className="flex">
                                                    <a href={item.href} className="hover:text-gray-800">
                                                      {item.name}
                                                    </a>
                                                  </li>
                                                ))}
                                              </ul>
                                            </div>
                                            <div>
                                              <p id="desktop-categories-heading" className="font-medium text-gray-900">
                                                Categories
                                              </p>
                                              <ul
                                                role="list"
                                                aria-labelledby="desktop-categories-heading"
                                                className="mt-6 space-y-6 sm:mt-4 sm:space-y-4"
                                              >
                                                {category.categories.map((item) => (
                                                  <li key={item.name} className="flex">
                                                    <a href={item.href} className="hover:text-gray-800">
                                                      {item.name}
                                                    </a>
                                                  </li>
                                                ))}
                                              </ul>
                                            </div>
                                          </div>
                                          <div className="grid grid-cols-2 gap-y-10 gap-x-8">
                                            <div>
                                              <p id="desktop-collection-heading" className="font-medium text-gray-900">
                                                Collection
                                              </p>
                                              <ul
                                                role="list"
                                                aria-labelledby="desktop-collection-heading"
                                                className="mt-6 space-y-6 sm:mt-4 sm:space-y-4"
                                              >
                                                {category.collection.map((item) => (
                                                  <li key={item.name} className="flex">
                                                    <a href={item.href} className="hover:text-gray-800">
                                                      {item.name}
                                                    </a>
                                                  </li>
                                                ))}
                                              </ul>
                                            </div>

                                            <div>
                                              <p id="desktop-brand-heading" className="font-medium text-gray-900">
                                                Brands
                                              </p>
                                              <ul
                                                role="list"
                                                aria-labelledby="desktop-brand-heading"
                                                className="mt-6 space-y-6 sm:mt-4 sm:space-y-4"
                                              >
                                                {category.brands.map((item) => (
                                                  <li key={item.name} className="flex">
                                                    <a href={item.href} className="hover:text-gray-800">
                                                      {item.name}
                                                    </a>
                                                  </li>
                                                ))}
                                              </ul>
                                            </div>
                                          </div>
                                        </div>
                                      </div>
                                    </div>
                                  </Popover.Panel>
                                </Transition>
                              </>
                            )}
                          </Popover>
                        ))}

                        {navigation.pages.map((page) => (
                          <a
                            key={page.name}
                            href={page.href}
                            className="flex items-center text-sm font-medium text-gray-700 hover:text-gray-800"
                          >
                            {page.name}
                          </a>
                        ))}
                      </div>
                    </Popover.Group>
                  </div>

                  {/* Mobile menu and search (lg-) */}
                  <div className="flex flex-1 items-center lg:hidden">
                    <button
                      type="button"
                      className="-ml-2 rounded-md bg-white p-2 text-gray-400"
                      onClick={() => setOpen(true)}
                    >
                      <span className="sr-only">Open menu</span>
                      <Bars3Icon className="h-6 w-6" aria-hidden="true" />
                    </button>

                    {/* Search */}
                    <a href="#" className="ml-2 p-2 text-gray-400 hover:text-gray-500">
                      <span className="sr-only">Search</span>
                      <MagnifyingGlassIcon className="h-6 w-6" aria-hidden="true" />
                    </a>
                  </div>

                  {/* Logo (lg-) */}
                  <a href="#" className="lg:hidden">
                    <span className="sr-only">Your Company</span>
                    <img
                      src="https://tailwindui.com/img/logos/mark.svg?color=indigo&shade=600"
                      alt=""
                      className="h-8 w-auto"
                    />
                  </a>

                  <div className="flex flex-1 items-center justify-end">
                    <div className="flex items-center lg:ml-8">
                      <div className="flex space-x-8">
                        <div className="hidden lg:flex">
                          <a href="#" className="-m-2 p-2 text-gray-400 hover:text-gray-500">
                            <span className="sr-only">Search</span>
                            <MagnifyingGlassIcon className="h-6 w-6" aria-hidden="true" />
                          </a>
                        </div>

                        <div className="flex">
                          <a href="#" className="-m-2 p-2 text-gray-400 hover:text-gray-500">
                            <span className="sr-only">Account</span>
                            <UserIcon className="h-6 w-6" aria-hidden="true" />
                          </a>
                        </div>
                      </div>

                      <span className="mx-4 h-6 w-px bg-gray-200 lg:mx-6" aria-hidden="true" />

                      <div className="flow-root">
                        <a href="#" className="group -m-2 flex items-center p-2">
                          <ShoppingCartIcon
                            className="h-6 w-6 flex-shrink-0 text-gray-400 group-hover:text-gray-500"
                            aria-hidden="true"
                          />
                          <span className="ml-2 text-sm font-medium text-gray-700 group-hover:text-gray-800">0</span>
                          <span className="sr-only">items in cart, view bag</span>
                        </a>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </nav>
      </header>
    </div>
  )
}
