import {Collapse, Dropdown} from "flowbite";
import {useEffect} from "react";
import delve from "dlv";

/* eslint-disable-next-line */
export interface AppHeaderProps {
}

export function Header({items = []}) {
  useEffect(function mount() {
    const burgerButton = document.getElementById('mega-menu-button');
    const megaZone = document.getElementById('mega-menu');
    new Collapse(megaZone, burgerButton);

    const userButton = document.getElementById('user-menu-button');
    const userZone = document.getElementById('user-dropdown');
    new Dropdown(userZone, userButton);
  });

  const generateItem = (item, index, isActive = false) => {
    const value = delve(item, 'attributes', {});
    return (
      <li key={value.title + index}>
        {value.children.data.length > 0 ? dropdownItem(value, isActive) : regularItem(value, isActive)}
      </li>
    );
  }

  const regularItem = (item, isActive = false) => {
    return (
      <a href={item.url}
         target={item.target}
         className={(isActive ? 'text-blue-600' : '') + " block py-2 pl-3 pr-4 border-b border-gray-100 hover:bg-gray-50 md:hover:bg-transparent md:border-0 md:hover:text-blue-600 md:p-0 dark:text-blue-500 md:dark:hover:text-blue-500 dark:hover:bg-gray-700 dark:hover:text-blue-500 md:dark:hover:bg-transparent dark:border-gray-700"}
         aria-current="page">{item.title}</a>
    )
  }

  const regularDropdownItem = (item, index) => {
    const value = delve(item, 'attributes', {});
    return (
      <li key={value.title + index}>
        <a href={value.url}
           className="dark:text-gray-400 hover:text-blue-600 dark:hover:text-blue-500">
          {value.title}
        </a>
      </li>
    );
  }

  const dropdownItem = (item, isActive = false) => {
    return (
      <>
        <button id="mega-menu-dropdown-button"
                data-dropdown-toggle="mega-menu-dropdown"
                className={(isActive ? 'text-blue-600' : '') + " flex items-center justify-between w-full py-2 pl-3 pr-4 font-medium border-b border-gray-100 md:w-auto hover:bg-gray-50 md:hover:bg-transparent md:border-0 md:hover:text-blue-600 md:p-0 dark:text-gray-400 md:dark:hover:text-blue-500 dark:hover:bg-gray-700 dark:hover:text-blue-500 md:dark:hover:bg-transparent dark:border-gray-700"}>
          {item.title}
          <svg aria-hidden="true"
               className="w-5 h-5 ml-1 md:w-4 md:h-4"
               fill="currentColor"
               viewBox="0 0 20 20"
               xmlns="http://www.w3.org/2000/svg">
            <path fillRule="evenodd"
                  d="M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z"
                  clipRule="evenodd"></path>
          </svg>
        </button>
        <div id="mega-menu-dropdown"
             className="absolute z-10 grid hidden w-auto text-sm bg-white border border-gray-100 rounded-lg shadow-md dark:border-gray-700 dark:bg-gray-700">
          <div className="p-4 pb-0 text-gray-900 md:pb-4 dark:text-white">
            <ul className="space-y-4" aria-labelledby="mega-menu-dropdown-button">
              {item.children.data.map((children, index) => regularDropdownItem(children, index))}
            </ul>
          </div>
        </div>
      </>
    )
  }

  return (
    <nav
      className="bg-white px-2 sm:px-4 py-2.5 dark:bg-gray-900 fixed w-full z-20 top-0 left-0 border-b border-gray-200 dark:border-gray-600">
      <div className="container flex flex-wrap items-center justify-between mx-auto">
        <a href="https://flowbite.com" className="flex items-center">
          <img src="https://flowbite.com/docs/images/logo.svg" className="h-6 mr-3 sm:h-9" alt="Flowbite Logo"/>
          <span className="self-center text-xl font-semibold whitespace-nowrap dark:text-white">Flowbite</span>
        </a>
        <div className="flex items-center md:order-2">
          <a href="#"
             className="text-gray-800 dark:text-white hover:bg-gray-50 focus:ring-4 focus:ring-gray-300 font-medium rounded-lg text-sm px-4 py-2 md:px-5 md:py-2.5 mr-1 md:mr-2 dark:hover:bg-gray-700 focus:outline-none dark:focus:ring-gray-800">Login</a>
          <a href="#"
             className="text-white bg-blue-700 hover:bg-blue-800 focus:ring-4 focus:ring-blue-300 font-medium rounded-lg text-sm px-4 py-2 md:px-5 md:py-2.5 mr-1 md:mr-2 dark:bg-blue-600 dark:hover:bg-blue-700 focus:outline-none dark:focus:ring-blue-800">Sign
            up</a>

          <button type="button"
                  className="flex mr-3 text-sm bg-gray-800 rounded-full md:mr-0 focus:ring-4 focus:ring-gray-300 dark:focus:ring-gray-600"
                  id="user-menu-button" aria-expanded="false" data-dropdown-toggle="user-dropdown"
                  data-dropdown-placement="bottom">
            <span className="sr-only">Open user menu</span>
            <img className="w-8 h-8 rounded-full" src="/docs/images/people/profile-picture-3.jpg" alt="user photo"/>
          </button>
          <div
            className="z-50 hidden my-4 text-base list-none bg-white divide-y divide-gray-100 rounded shadow dark:bg-gray-700 dark:divide-gray-600"
            id="user-dropdown">
            <div className="px-4 py-3">
              <span className="block text-sm text-gray-900 dark:text-white">Bonnie Green</span>
              <span
                className="block text-sm font-medium text-gray-500 truncate dark:text-gray-400">name@flowbite.com</span>
            </div>
            <ul className="py-1" aria-labelledby="user-menu-button">
              <li>
                <a href="#"
                   className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Dashboard</a>
              </li>
              <li>
                <a href="#"
                   className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Settings</a>
              </li>
              <li>
                <a href="#"
                   className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Earnings</a>
              </li>
              <li>
                <a href="#"
                   className="block px-4 py-2 text-sm text-gray-700 hover:bg-gray-100 dark:hover:bg-gray-600 dark:text-gray-200 dark:hover:text-white">Sign
                  out</a>
              </li>
            </ul>
          </div>

          <button id="mega-menu-button" data-collapse-toggle="mega-menu" type="button"
                  className="inline-flex items-center p-2 ml-1 text-sm text-gray-500 rounded-lg md:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600"
                  aria-controls="mega-menu" aria-expanded="false">
            <span className="sr-only">Open main menu</span>
            <svg aria-hidden="true" className="w-6 h-6" fill="currentColor" viewBox="0 0 20 20"
                 xmlns="http://www.w3.org/2000/svg">
              <path fillRule="evenodd"
                    d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 15a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z"
                    clipRule="evenodd"></path>
            </svg>
          </button>
        </div>
        <div id="mega-menu" className="items-center justify-between hidden w-full md:flex md:w-auto md:order-1">
          <ul className="flex flex-col mt-4 font-medium md:flex-row md:space-x-8 md:mt-0">
            {items.map((item, index: number) => generateItem(item, index))}
          </ul>
        </div>
      </div>
    </nav>
  );
}

export default Header;